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1

Phenomenology of electrostatically charged droplet combustion in normal gravity  

SciTech Connect (OSTI)

Experimental findings are provided on the effect of electrostatically charging a fuel on single-burning droplet combustion in normal gravity. It was established that significant modification of the flame morphology and the droplet burning time could be achieved, solely by the droplet charge, without the application of external electric fields. Negative charging of the droplets of mixtures of isooctane with either ethanol or a commercially available anti-static additive generated intense motion of the flame and abbreviated the droplet burning time by as much as 40% for certain blend compositions. Positive charging of the droplets generated almost spherical flames, because electrostatic attraction toward the droplets countered the effect of buoyancy. By comparing combustion of droplets of the same conductivity but different compositions, coupling of electrostatics with combustion chemistry was established. (author)

Anderson, Eric K.; Koch, Jeremy A.; Kyritsis, Dimitrios C. [Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801 (United States)

2008-08-15T23:59:59.000Z

2

Electrostatic monitoring  

DOE Patents [OSTI]

The apparatus and method provide a technique for more simply measuring alpha and/or beta emissions arising from items or locations. The technique uses indirect monitoring of the emissions by detecting ions generated by the emissions, the ions being attracted electrostatically to electrodes for discharge of collection. The apparatus and method employ a chamber which is sealed around the item or location during monitoring with no air being drawn into or expelled from the chamber during the monitoring process. A simplified structure and operations arises as a result, but without impairing the efficiency and accuracy of the detection technique.

Orr, Christopher Henry (Cumbria, GB); Luff, Craig Janson (Cumbria, GB); Dockray, Thomas (Cumbria, GB); Macarthur, Duncan Whittemore (Los Alamos, NM)

2001-01-01T23:59:59.000Z

3

Electrostatically screened, voltage-controlled electrostatic chuck  

DOE Patents [OSTI]

Employing an electrostatically screened, voltage-controlled electrostatic chuck particularly suited for holding wafers and masks in sub-atmospheric operations will significantly reduce the likelihood of contaminant deposition on the substrates. The electrostatic chuck includes (1) an insulator block having a outer perimeter and a planar surface adapted to support the substrate and comprising at least one electrode (typically a pair of electrodes that are embedded in the insulator block), (2) a source of voltage that is connected to the at least one electrode, (3) a support base to which the insulator block is attached, and (4) a primary electrostatic shield ring member that is positioned around the outer perimeter of the insulator block. The electrostatic chuck permits control of the voltage of the lithographic substrate; in addition, it provides electrostatic shielding of the stray electric fields issuing from the sides of the electrostatic chuck. The shielding effectively prevents electric fields from wrapping around to the upper or front surface of the substrate, thereby eliminating electrostatic particle deposition.

Klebanoff, Leonard Elliott (San Ramon, CA)

2001-01-01T23:59:59.000Z

4

Instability limits for spontaneous double layer formation  

SciTech Connect (OSTI)

We present time-resolved measurements that demonstrate that large amplitude electrostatic instabilities appear in pulsed, expanding helicon plasmas at the same time as particularly strong double layers appear in the expansion region. A significant cross-correlation between the electrostatic fluctuations and fluctuations in the number of ions accelerated by the double layer electric field is observed. No correlation is observed between the electrostatic fluctuations and ions that have not passed through the double layer. These measurements confirm that the simultaneous appearance of the electrostatic fluctuations and the double layer is not simple coincidence. In fact, the accelerated ion population is responsible for the growth of the instability. The double layer strength, and therefore, the velocity of the accelerated ions, is limited by the appearance of the electrostatic instability.

Carr, J. Jr. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States) [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States); Department of Physics, Texas Lutheran University, Seguin, Texas 78155 (United States); Galante, M. E.; McCarren, D.; Scime, E. E.; Sears, S.; VanDervort, R. W. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States)] [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States); Magee, R. M. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States) [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States); TriAlpha Energy, Inc., Foothill Ranch, California 92610 (United States); Reynolds, E. [Department of Physics and Engineering, West Virginia Wesleyan, Buckhannon, West Virginia 26201 (United States)] [Department of Physics and Engineering, West Virginia Wesleyan, Buckhannon, West Virginia 26201 (United States)

2013-11-15T23:59:59.000Z

5

Micromachined electrostatic vertical actuator  

DOE Patents [OSTI]

A micromachined vertical actuator utilizing a levitational force, such as in electrostatic comb drives, provides vertical actuation that is relatively linear in actuation for control, and can be readily combined with parallel plate capacitive position sensing for position control. The micromachined electrostatic vertical actuator provides accurate movement in the sub-micron to micron ranges which is desirable in the phase modulation instrument, such as optical phase shifting. For example, compact, inexpensive, and position controllable micromirrors utilizing an electrostatic vertical actuator can replace the large, expensive, and difficult-to-maintain piezoelectric actuators. A thirty pound piezoelectric actuator with corner cube reflectors, as utilized in a phase shifting diffraction interferometer can be replaced with a micromirror and a lens. For any very precise and small amplitudes of motion` micromachined electrostatic actuation may be used because it is the most compact in size, with low power consumption and has more straightforward sensing and control options.

Lee, Abraham P. (Walnut Creek, CA); Sommargren, Gary E. (Santa Cruz, CA); McConaghy, Charles F. (Livermore, CA); Krulevitch, Peter A. (Pleasanton, CA)

1999-10-19T23:59:59.000Z

6

Mechanistic studies of bleomycin-mediated double-stranded DNA cleavage and structural studies of DNA containing normal and 4'-oxidized abasic sites  

E-Print Network [OSTI]

In order to examine the role of partial intercalation in double-stranded (ds) DNA cleavage mediated by a single bleomycin (BLM), a bulky group ([-cyclodextrin) was chemically attached to the polyamine tail of BLM A5 to ...

Chen, Jingyang, Ph. D. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

7

A synchrotron X-ray study of competing undulation and electrostatic interlayer interactions in fluid multimembrane lyotropic phases  

E-Print Network [OSTI]

arise from attrac- tive electrodynamic van der Waals and, normally repulsive electrostatic forces [2307 A synchrotron X-ray study of competing undulation and electrostatic interlayer interactions of competing electrostatic and undulation forces in two multimembrane systems in the lamellar L03B1 phase

Boyer, Edmond

8

Biobriefcase electrostatic aerosol collector  

DOE Patents [OSTI]

A system for sampling air and collecting particles entrained in the air comprising a receiving surface, a liquid input that directs liquid to the receiving surface and produces a liquid surface, an air input that directs the air so that the air with particles entrained in the air impact the liquid surface, and an electrostatic contact connected to the liquid that imparts an electric charge to the liquid. The particles potentially including bioagents become captured in the liquid by the air with particles entrained in the air impacting the liquid surface. Collection efficiency is improved by the electrostatic contact electrically charging the liquid. The effects of impaction and adhesion due to electrically charging the liquid allows a unique combination in a particle capture medium that has a low fluid consumption rate while maintaining high efficiency.

Bell, Perry M. (Tracy, CA); Christian, Allen T. (Madison, WI); Bailey, Christopher G. (Pleasanton, CA); Willis, Ladona (Manteca, CA); Masquelier, Donald A. (Tracy, CA); Nasarabadi, Shanavaz L. (Livermore, CA)

2009-03-17T23:59:59.000Z

9

Electrostatic curtain studies  

SciTech Connect (OSTI)

This report presents the results of experiments using electrostatic curtains (ESCS) as a transuranic (TRU) contamination control technique. The TRU contaminants included small (micrometer to sub micrometer) particles of plutonium and americium compounds associated with defense-related waste. Three series of experiments were conducted. The first was with uncontaminated Idaho National Engineering Laboratory (INEL) soil, the second used contaminated soil containing plutonium-239 (from a mixture of Rocky Flats Plant contaminated soil and INEL uncontaminated soil), and the third was uncontaminated INEL soil spiked with plutonium-239. All experiments with contaminated soil were conducted inside a glove box containing a dust generator, low volume cascade impactor (LVCI), electrostatic separator, and electrostatic materials. The data for these experiments consisted of the mass of dust collected on the various material coupons, plates, and filters; radiochemical analysis of selected samples; and photographs, as well as computer printouts giving particle size distributions and dimensions from the scanning electron microscope (SEM). The following results were found: (a) plutonium content (pCi/g) was found to increase with smaller soil particle sizes and (b) the electrostatic field had a stronger influence on smaller particle sizes compared to larger particle sizes. The SEM analysis indicated that the particle size of the tracer Pu239 used in the spiked soil experiments was below the detectable size limit (0.5 {mu}m) of the SEM and, thus, may not be representative of plutonium particles found in defense-related waste. The use of radiochemical analysis indicated that plutonium could be found on separator plates of both polarities, as well as passing through the electric field and collecting on LVCI filters.

Meyer, L C

1992-05-01T23:59:59.000Z

10

Micromachined silicon electrostatic chuck  

DOE Patents [OSTI]

An electrostatic chuck is faced with a patterned silicon plate, created by micromachining a silicon wafer, which is attached to a metallic base plate. Direct electrical contact between the chuck face (patterned silicon plate`s surface) and the silicon wafer it is intended to hold is prevented by a pattern of flat-topped silicon dioxide islands that protrude less than 5 micrometers from the otherwise flat surface of the chuck face. The islands may be formed in any shape. Islands may be about 10 micrometers in diameter or width and spaced about 100 micrometers apart. One or more concentric rings formed around the periphery of the area between the chuck face and wafer contain a low-pressure helium thermal-contact gas used to assist heat removal during plasma etching of a silicon wafer held by the chuck. The islands are tall enough and close enough together to prevent silicon-to-silicon electrical contact in the space between the islands, and the islands occupy only a small fraction of the total area of the chuck face, typically 0.5 to 5 percent. The pattern of the islands, together with at least one hole bored through the silicon veneer into the base plate, will provide sufficient gas-flow space to allow the distribution of the helium thermal-contact gas. 6 figs.

Anderson, R.A.; Seager, C.H.

1996-12-10T23:59:59.000Z

11

Synthesis of electrostatic multielectrode deflectors  

SciTech Connect (OSTI)

Synthesis of electrostatic deflectors with given source parameters, first-order properties, and minimum aberrations can be realized by using the cubic spline method or the {ital a} {ital priori} given multielectrode approach. Synthesis of electrostatic deflectors was successfully achieved previously by using the cubic spline method. In this paper we present synthesis of electrostatic deflectors based on the {ital a} {ital priori} given multielectrode approach for the purpose of obtaining the minimum beam spot size through a sequential optimization technique. Our calculations show that the third-order geometrical deflection aberrations can be reduced by about two to three orders of magnitude using a multielectrode deflector with three units or five units, each having short cylindrical segments with geometrically octupole symmetry. {copyright} {ital 1995} {ital American} {ital Vacuum} {ital Society}

Cho, H.; Szilagyi, M. [Department of Electrical and Computer Engineering, University of Arizona, Tucson, Arizona 85721 (United States)] [Department of Electrical and Computer Engineering, University of Arizona, Tucson, Arizona 85721 (United States)

1995-09-01T23:59:59.000Z

12

Continuum Electrostatics in Cell Biology  

E-Print Network [OSTI]

Recent experiments revealing possible nanoscale electrostatic interactions in force generation at kinetochores for chromosome motions have prompted speculation regarding possible models for interactions between positively charged molecules in kinetochores and negative charge on C-termini near the plus ends of microtubules. A clear picture of how kinetochores establish and maintain a dynamic coupling to microtubules for force generation during the complex motions of mitosis remains elusive. The current paradigm of molecular cell biology requires that specific molecules, or molecular geometries, for force generation be identified. However, it is possible to account for mitotic motions within a classical electrostatics approach in terms of experimentally known cellular electric charge interacting over nanometer distances. These charges are modeled as bound surface and volume continuum charge distributions. Electrostatic consequences of intracellular pH changes during mitosis may provide a master clock for the events of mitosis.

L. John Gagliardi

2010-02-06T23:59:59.000Z

13

Theory, experiment and computer simulation of the electrostatic...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Theory, experiment and computer simulation of the electrostatic potential at crystalelectrolyte interfaces . Theory, experiment and computer simulation of the electrostatic...

14

A multiscale study of atomic interactions in the electrochemical double layer applied to electrocatalysis  

E-Print Network [OSTI]

This work is an integrated study of chemical and electrostatic interactions in the electrochemical double layer, and their significance for accurate prediction of reaction kinetics in electrocatalysis. First, a kinetic ...

Bonnet, Nicéphore

2011-01-01T23:59:59.000Z

15

RESOLVING BEAM TRANSPORT PROBLEMS IN ELECTROSTATIC ACCELERATORS  

E-Print Network [OSTI]

RESOLVING BEAM TRANSPORT PROBLEMS IN ELECTROSTATIC ACCELERATORS J. D. LARSON (*) Oak Ridge National are frequently encounte- red during the design, operation and upgrading of electrostatic accelerators. Examples are provided of analytic procedures that clarify accelerator ion optics and lead to more effective beam

Boyer, Edmond

16

ELECTROSTATICALLY-ACTUATED RECONFIGURABLE ELASTOMER MICROFLUIDICS  

E-Print Network [OSTI]

ELECTROSTATICALLY-ACTUATED RECONFIGURABLE ELASTOMER MICROFLUIDICS Meng-Ping Chang1 , and Michel M a user-programmable reconfigurable elastomer microfluidic system which employs electrostatic actuation of water-filled elastomer microfluidic channels. Device actuation was achieved by applying 5 MHz, 15-20 V

Maharbiz, Michel

17

Electrostatic thin film chemical and biological sensor  

DOE Patents [OSTI]

A chemical and biological agent sensor includes an electrostatic thin film supported by a substrate. The film includes an electrostatic charged surface to attract predetermined biological and chemical agents of interest. A charge collector associated with said electrostatic thin film collects charge associated with surface defects in the electrostatic film induced by the predetermined biological and chemical agents of interest. A preferred sensing system includes a charge based deep level transient spectroscopy system to read out charges from the film and match responses to data sets regarding the agents of interest. A method for sensing biological and chemical agents includes providing a thin sensing film having a predetermined electrostatic charge. The film is exposed to an environment suspected of containing the biological and chemical agents. Quantum surface effects on the film are measured. Biological and/or chemical agents can be detected, identified and quantified based on the measured quantum surface effects.

Prelas, Mark A. (Columbia, MO); Ghosh, Tushar K. (Columbia, MO); Tompson, Jr., Robert V. (Columbia, MO); Viswanath, Dabir (Columbia, MO); Loyalka, Sudarshan K. (Columbia, MO)

2010-01-19T23:59:59.000Z

18

Electrostatics and radioactive aerosol behavior  

SciTech Connect (OSTI)

Radioactive aerosols differ from their nonradioactive counterparts by their ability to charge themselves by emitting charged particles during the radioactive decay process. Evidence that electrostatics, including this charging process, can affect the transport of the aerosols was summarized previously. Charge distributions and the mean charge for a monodisperse radioactive aerosol have been considered in detail. The principal results of theory to calculate charge distributions on a aerosol with a size distribution, changes to Brownian coagulation rates for an aerosol in a reactor containment, and possible changes to aerosol deposition resulting from the charging will be presented. The main purpose of the work has been to improve calculations of aerosol behavior in reactor containments, but behavior in less ionizing environments will be affected more strongly, and some problems remain to be solved in performing reliable calculations.

Clement, C.F.

1994-12-31T23:59:59.000Z

19

Time-resolved measurements of double layer evolution in expanding plasma  

SciTech Connect (OSTI)

Observations in steady-state plasmas confirm predictions that formation of a current-free double layer in a plasma expanding into a chamber of larger diameter is accompanied by an increase in ionization upstream of the double layer. The upstream plasma density increases sharply at the same driving frequency at which a double layer appears. For driving frequencies at which no double layer appears, large electrostatic instabilities are observed. Time-resolved measurements in pulsed discharges indicate that the double layer initially forms for all driving frequencies. However, for particularly strong double layers, instabilities appear early in the discharge and the double layer collapses.

Scime, E. E.; Biloiu, I. A.; Carr, J. Jr.; Thakur, S. Chakraborty; Galante, M.; Hansen, A.; Houshmandyar, S.; Keesee, A. M.; McCarren, D.; Sears, S. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States); Biloiu, C. [Varian Associates, Gloucester, Massachusetts 01930 (United States); Sun, X. [Tri-Alpha Corporation, Foothill Ranch, California 92610 (United States)

2010-05-15T23:59:59.000Z

20

Carbon nanotubes decorated with Pt nanoparticles via electrostatic...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

nanotubes decorated with Pt nanoparticles via electrostatic self-assembly: a highly active oxygen reduction Carbon nanotubes decorated with Pt nanoparticles via electrostatic...

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Intrinsic electrostatic effects in nanostructured ceramics  

SciTech Connect (OSTI)

Using empirical potentials, we have found that electrostatic dipoles can be created at grain boundaries formed from non-polar surfaces of fluorite-structured materials. In particular, the {Sigma}5(310)/[001] symmetric tilt grain boundary reconstructs to break the symmetry in the atomic structure at the boundary, forming the dipole. This dipole results in an abrupt change in electrostatic potential across the boundary. In multilayered ceramics composed of stacks of grain boundaries, the change in electrostatic potential at the boundary results in profound electrostatic effects within the crystalline layers, the nature of which depends on the electrostatic boundary conditions. For open-circuit boundary conditions, layers with either high or low electrostatic potential are formed. By contrast, for short-circuit boundary conditions, electric fields can be created within each layer, the strength of which then depends on the thickness of the layers. These electrostatic effects may have important consequences for the behavior of defects and dopants within these materials and offer the possibility of interesting technological applications.

Uberuaga, Blas Pedro [Los Alamos National Laboratory; Stanek, Chris R [Los Alamos National Laboratory; Nerikar, Pankaj V [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

22

ELECTROSTATICALLY ENHANCED BARRIER FILTER COLLECTION  

SciTech Connect (OSTI)

This work was performed through the University of North Dakota (UND) Chemical Engineering Department with assistance from UND's Energy & Environmental Research Center. This research was undertaken in response to the U.S. Department of Energy Federal Technology Center Program Solicitation No. DE-PS26-99FT40479, Support of Advanced Coal Research at U.S. Universities and Colleges. Specifically, this research was in support of the UCR Core Program and addressees Topic 1, Improved Hot-Gas Contaminant and Particulate Removal Techniques, introducing an advanced design for particulate removal. Integrated gasification combined cycle (IGCC) offers the potential for very high efficiency and clean electric generation. In IGCC, the product gas from the gasifier needs to be cleaned of particulate matter to avoid erosion and high-temperature corrosion difficulties arising with the turbine blades. Current methods involve cooling the gases to {approx}100 C to condense alkalis and remove sulfur and particulates using conventional scrubber technology. This ''cool'' gas is then directed to a turbine for electric generation. While IGCC has the potential to reach efficiencies of over 50%, the current need to cool the product gas for cleaning prior to firing it in a turbine is keeping IGCC from reaching its full potential. The objective of the current project was to develop a highly reliable particulate collector system that can meet the most stringent turbine requirements and emission standards, can operate at temperatures above 1500 F, is applicable for use with all U.S. coals, is compatible with various sorbent injection schemes for sulfur and alkali control, can be integrated into a variety of configurations for both pressurized gasification and combustion, increases allowable face velocity to reduce filter system capital cost, and is cost-competitive with existing technologies. The collector being developed is a new concept in particulate control called electrostatically enhanced barrier filter collection (EBFC). This concept combines electrostatic precipitation (ESP) with candle filters in a single unit. Similar technology has been recently proven on a commercial scale for atmospheric applications, but needed to be tested at high temperatures and pressures. The synergy obtained by combining the two control technologies into a single system should actually reduce filter system capital and operating costs and make the system more reliable. More specifically, the ESP is expected to significantly reduce candle filter load and also to limit ash reintrainment, allowing for full recovery of baseline pressure drop during backpulsing of the filters.

John Erjavec; Michael D. Mann; Ryan Z. Knutson; Michael L. Swanson; Michael E. Collings

2003-06-01T23:59:59.000Z

23

Flow preconditioner for electrostatic precipitator  

SciTech Connect (OSTI)

A flow preconditioner for an electrostatic precipitator removes particulate matter from a stream of polluted gas immediately after it passes through a tangential inlet at the lower end of a vertical cylindrical housing and straightens and divides the stream into laminations parallel to the axis of the housing. It comprises an annular ledge or choke ring extending inwardly from said housing above the inlet and an assembly of vanes above said ledge extending radially from the axis of the housing and angularly spaced apart. Each of said vanes has a flow receiving edge directed toward said inlet, a curved portion extending upwardly and away from said inlet, and a flat portion extending upwardly from said curved portion in a plane parallel to the housing axis. The curved portion of each vane defines a trough having a camber which gradually decreases along its span from the outer end of the vane towards the axis of the housng, together with means to vary the centrifugal flow distribution relative to the housing to render the preconditioner adjustable for various flow capacities.

Honacker, H.; Drlik, R.J.

1980-01-01T23:59:59.000Z

24

Electrostatic-plasma-wave energy flux  

E-Print Network [OSTI]

would reduce cross- field wave-energy convection since theor cross-field leakage of wave energy are ap- that thecomposition of electrostatic-wave-energy field degrees of

Amendt, P.; Rostoker, N.

1984-01-01T23:59:59.000Z

25

Electrostatic Modeling of CMOS sensor array 1 Computing Security  

E-Print Network [OSTI]

to Hades. #12;Electrostatic Modeling of CMOS sensor array 3 7 Kerberos Tickets Used for authentication

Cukic, Bojan

26

An improved proximity force approximation for electrostatics  

SciTech Connect (OSTI)

A quite straightforward approximation for the electrostatic interaction between two perfectly conducting surfaces suggests itself when the distance between them is much smaller than the characteristic lengths associated with their shapes. Indeed, in the so called 'proximity force approximation' the electrostatic force is evaluated by first dividing each surface into a set of small flat patches, and then adding up the forces due two opposite pairs, the contributions of which are approximated as due to pairs of parallel planes. This approximation has been widely and successfully applied in different contexts, ranging from nuclear physics to Casimir effect calculations. We present here an improvement on this approximation, based on a derivative expansion for the electrostatic energy contained between the surfaces. The results obtained could be useful for discussing the geometric dependence of the electrostatic force, and also as a convenient benchmark for numerical analyses of the tip-sample electrostatic interaction in atomic force microscopes. - Highlights: Black-Right-Pointing-Pointer The proximity force approximation (PFA) has been widely used in different areas. Black-Right-Pointing-Pointer The PFA can be improved using a derivative expansion in the shape of the surfaces. Black-Right-Pointing-Pointer We use the improved PFA to compute electrostatic forces between conductors. Black-Right-Pointing-Pointer The results can be used as an analytic benchmark for numerical calculations in AFM. Black-Right-Pointing-Pointer Insight is provided for people who use the PFA to compute nuclear and Casimir forces.

Fosco, Cesar D. [Centro Atomico Bariloche, Comision Nacional de Energia Atomica, R8402AGP Bariloche (Argentina) [Centro Atomico Bariloche, Comision Nacional de Energia Atomica, R8402AGP Bariloche (Argentina); Instituto Balseiro, Universidad Nacional de Cuyo, R8402AGP Bariloche (Argentina); Lombardo, Fernando C. [Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina) [Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina); IFIBA (Argentina)] [Argentina; Mazzitelli, Francisco D., E-mail: fdmazzi@cab.cnea.gov.ar [Centro Atomico Bariloche, Comision Nacional de Energia Atomica, R8402AGP Bariloche (Argentina); Departamento de Fisica Juan Jose Giambiagi, FCEyN UBA, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pabellon I, 1428 Buenos Aires (Argentina)

2012-08-15T23:59:59.000Z

27

Electrostatic supersolitons in three-species plasmas  

SciTech Connect (OSTI)

Superficially, electrostatic potential profiles of supersolitons look like those of traditional solitons. However, their electric field profiles are markedly different, having additional extrema on the wings of the standard bipolar structure. This new concept was recently pointed out in the literature for a plasma model with five species. Here, it is shown that electrostatic supersolitons are not an artefact of exotic, complicated plasma models, but can exist even in three-species plasmas and are likely to occur in space plasmas. Further, a methodology is given to delineate their existence domains in a systematic fashion by determining the specific limiting factors.

Verheest, Frank [Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B-9000 Gent (Belgium); School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Hellberg, Manfred A. [School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Kourakis, Ioannis [Department of Physics and Astronomy, Centre for Plasma Physics, Queen's University Belfast, BT7 1NN Northern Ireland (United Kingdom)

2013-01-15T23:59:59.000Z

28

Electric Field in a Double Layer and the Imparted Momentum  

SciTech Connect (OSTI)

It is shown that the net momentum delivered by the large electric field inside a one-dimensional double layer is zero. This is demonstrated through an analysis of the momentum balance in the double layer at the boundary between the ionosphere and the aurora cavity. For the recently observed double layer in a current-free plasma expanding along a divergent magnetic field, an analysis of the evolution of the radially averaged variables shows that the increase of plasma thrust results from the magnetic-field pressure balancing the plasma pressure in the direction of acceleration, rather than from electrostatic pressure.

Fruchtman, A. [Holon Academic Institute of Technology, 52 Golomb Street, Holon 58102 (Israel)

2006-02-17T23:59:59.000Z

29

Controlling Nonpolar Colloidal Asphaltene Aggregation by Electrostatic Repulsion  

E-Print Network [OSTI]

truncates asphaltene precipitation and colloidal aggregation by enabling uniform electrostatic chargingControlling Nonpolar Colloidal Asphaltene Aggregation by Electrostatic Repulsion Sara M. Hashmi to petroleum oil systems to thermodynamically prevent asphaltene precipitation, amphiphilic dispersants can

Firoozabadi, Abbas

30

Experimental Characterization of Plasma Heating with Beating Electrostatic Waves  

E-Print Network [OSTI]

Experimental Characterization of Plasma Heating with Beating Electrostatic Waves Benjamin Jorns and Edgar Y. Choueiri Electric Propulsion and Plasma Dynamics Laboratory, Princeton University, Princeton, NJ, 08540 The heating of ions in a magnetized plasma by two electrostatic waves whose frequencies

Choueiri, Edgar

31

Neutrino oscillations and neutrinoless double beta decay  

E-Print Network [OSTI]

The relation between neutrino oscillation parameters and neutrinoless double beta decay is studied, assuming normal and inverse hierarchies for Majorana neutrino masses. For normal hierarchy the crucial dependence on U_{e3} is explored. The link with tritium beta decay is also briefly discussed.

D. Falcone; F. Tramontano

2001-03-16T23:59:59.000Z

32

Atomic resolution electrostatic potential mapping of graphene sheets by off-axis electron holography  

SciTech Connect (OSTI)

Off-axis electron holography has been performed at atomic resolution with the microscope operated at 80?kV to provide electrostatic potential maps from single, double, and triple layer graphene. These electron holograms have been reconstructed in order to obtain information about atomically resolved and mean inner potentials. We propose that off-axis electron holography can now be used to measure the electrical properties in a range of two-dimensional semiconductor materials and three dimensional devices comprising stacked layers of films to provide important information about their electrical properties.

Cooper, David, E-mail: david.cooper@cea.fr [University Grenoble Alpes, F-38000 Grenoble (France); CEA, LETI, MINATEC Campus, F-38054, Grenoble (France); Pan, Cheng-Ta; Haigh, Sarah [School of Materials, The University of Manchester, Manchester M13 9PL (United Kingdom)

2014-06-21T23:59:59.000Z

33

Electrostatic solitary structures in presence of non-thermal electrons and a warm electron beam on the auroral field lines  

SciTech Connect (OSTI)

Electrostatic solitary waves (ESWs) have been observed by satellites in the auroral region of the Earth's magnetosphere. These ESWs are found to be having both positive and negative electrostatic potentials. Using the Sagdeeev psuedo-potential technique, arbitrary amplitude electron-acoustic solitary waves/double layers are studied in an unmagnetized plasma consisting of non-thermally distributed hot electrons, fluid cold electrons, a warm electron beam, and ions. The inertia of the warm electrons, and not the beam speed, is essential for the existence of positive potential solitary structures. Existence domains for positive as well as negative potential electrostatic solitons/double layers are obtained. For the typical auroral region parameters, the electric field amplitude of the negative potential solitons is found to be in the range {approx}(3-30) mV/m and {approx}(5-80) mV/m for the positive potential solitons. For the negative potential solitons/double layers, the amplitudes are higher when their widths are smaller. On the other hand, the amplitude of the positive potential structures increase with their widths.

Singh, S. V. [Indian Institute of Geomagnetism, Navi Mumbai (India); School of Physics, University of Kwazulu-Natal, Durban (South Africa); Lakhina, G. S. [Indian Institute of Geomagnetism, Navi Mumbai (India); Bharuthram, R. [University of the Western Cape, Bellville (South Africa); Pillay, S. R. [School of Physics, University of Kwazulu-Natal, Durban (South Africa)

2011-12-15T23:59:59.000Z

34

Molecular electrostatic potentials by systematic molecular fragmentation  

SciTech Connect (OSTI)

A simple method is presented for estimating the molecular electrostatic potential in and around molecules using systematic molecular fragmentation. This approach estimates the potential directly from the electron density. The accuracy of the method is established for a set of organic molecules and ions. The utility of the approach is demonstrated by estimating the binding energy of a water molecule in an internal cavity in the protein ubiquitin.

Reid, David M.; Collins, Michael A. [Research School of Chemistry, Australian National University, Canberra, ACT 0200 (Australia)] [Research School of Chemistry, Australian National University, Canberra, ACT 0200 (Australia)

2013-11-14T23:59:59.000Z

35

Predicting Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

We give predictions for the neutrinoless double beta decay rate in a simple variant of the A_4 family symmetry model. We show that there is a lower bound for the neutrinoless double beta decay amplitude even in the case of normal hierarchical neutrino masses, corresponding to an effective mass parameter |m_{ee}| >= 0.17 \\sqrt{\\Delta m^2_{ATM}}. This result holds both for the CP conserving and CP violating cases. In the latter case we show explicitly that the lower bound on |m_{ee}| is sensitive to the value of the Majorana phase. We conclude therefore that in our scheme, neutrinoless double beta decay may be accessible to the next generation of high sensitivity experiments.

M. Hirsch; Ernest Ma; J. W. F. Valle; A. Villanova del Moral

2005-07-12T23:59:59.000Z

36

Sustainability Double Degree Double Degree Info  

E-Print Network [OSTI]

Sustainability Double Degree Double Degree Info: · 36 credits in B for graduation. Sustainability Core: Take each course below for a total of 17 -20 credits. Term/Grade Course _____ ____ *NR 350 (4) Sustainable

Grünwald, Niklaus J.

37

ccsd00003444, Jordan Normal and Rational Normal  

E-Print Network [OSTI]

that the characteristic polynomial can be fully factorized (see e.g. Fortuna-Gianni for rational normal forms

38

Electrostatic particle trap for ion beam sputter deposition  

DOE Patents [OSTI]

A method and apparatus for the interception and trapping of or reflection of charged particulate matter generated in ion beam sputter deposition. The apparatus involves an electrostatic particle trap which generates electrostatic fields in the vicinity of the substrate on which target material is being deposited. The electrostatic particle trap consists of an array of electrode surfaces, each maintained at an electrostatic potential, and with their surfaces parallel or perpendicular to the surface of the substrate. The method involves interception and trapping of or reflection of charged particles achieved by generating electrostatic fields in the vicinity of the substrate, and configuring the fields to force the charged particulate material away from the substrate. The electrostatic charged particle trap enables prevention of charged particles from being deposited on the substrate thereby enabling the deposition of extremely low defect density films, such as required for reflective masks of an extreme ultraviolet lithography (EUVL) system.

Vernon, Stephen P. (Pleasanton, CA); Burkhart, Scott C. (Livermore, CA)

2002-01-01T23:59:59.000Z

39

Sulfur dioxide removal by enhanced electrostatics  

SciTech Connect (OSTI)

The economic removal of sulfur dioxide (SO{sub 2}) still represents a significant technical challenge which could determine the use of certain types of fossil fuels for energy production. This paper will present the preliminary results of an innovative research project utilizing a low-cost wet electrostatic precipitator to remove sulfur dioxide. There are many aspects for gas removal in an electrostatic precipitator which are not currently being used. This project utilizes electron attachment of free electrons onto gas molecules and ozone generation to remove sulfur dioxide which is a typical flue gas pollutant. This research was conducted on a bench-scale, wet electrostatic precipitator. A direct-current negative discharge corona is used to generate the ozone in-situ. This ozone will be used to oxidize SO{sub 2} to form sulfuric acid, which is very soluble in water. However, it is believed that the primary removal mechanism is electron attachment of the free electrons from the corona which force the SO{sub 2} to go to equilibrium with the water and be removed from the gas stream. Forcing the equilibrium has been shown to achieve removal efficiencies of up to 70%. The bench scale unit has been designed to operate wet or dry, positive and negative for comparison purposes. The applied dc voltage is variable from 0 to 100 kV, the flow rate is a nominal 7 m{sup 3}/hr and the collecting electrode area is 0.20 m{sup 2}. Tests are conducted on a simulated flue gas stream with SO{sub 2} ranging from 0 to 4,000 ppmv. This paper presents the results of tests conducted to determine the effect of operating conditions on removal efficiency. The removal efficiency was found to vary with gas residence time, water flow rate, inlet concentration, applied power, and the use of corona pulsing.

Larkin, K.; Tseng, C.; Keener, T.C.; Khang, S.J. [Univ. of Cincinnati, OH (United States)

1997-12-31T23:59:59.000Z

40

Assessment of operating parameter variation on electrostatic precipitator performance  

E-Print Network [OSTI]

lignite coal were collected and resistivity analysis performed for varying conditions of temperature and humidity. As a result of the laboratory analysis, it was determined that moisture and temperature conditioning of Texas lignite coal fly ash... results. I 5. Sample 8 moisturi ed test results. 57 64 66 69 77 LIST OF FIGURES Figure Lignite coal deposit formations in East Texas. Z. The electrostatic precipitator system 3. Electrostatic precipitator in operation. 4. Electrostatic...

Gunn, Roam Anthony

1974-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

antimicrobial peptide electrostatic: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Helsing, Johan 294 Experiment for Plasma Energization with Beating Electrostatic Waves Plasma Physics and Fusion Websites Summary: attractive as it is electrodeless (and thus...

42

amplitude electrostatic wave: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Suresh 2012-07-25 20 Experiment for Plasma Energization with Beating Electrostatic Waves Plasma Physics and Fusion Websites Summary: attractive as it is electrodeless (and thus...

43

E-Print Network 3.0 - accelerated electrostatic interactions...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

<< < 1 2 3 4 5 > >> 1 Fly-Casting in Protein-DNA Binding: Frustration between Protein Folding and Electrostatics Facilitates Target Recognition Summary: , the free energy...

44

Electrostatic precipitator having high strength discharge electrode  

SciTech Connect (OSTI)

There is disclosed an electrostatic precipitator with a discharge electrode having dimensional and configuration characteristics which provide high field strength and high current density particularly in a wet electrostatic precipitator. The round cylindrical collector tube of length (L) and with an inner diameter (D) has a coaxially positioned discharge electrode having an electrode supporting mast of a diameter from 0.25 to 40 D with an electrically conducting closed screw fli secured to the mast. The screw flight has an overall diameter (D) of from 0.33 to 0.67 D with a pitch of from d-d/2 to d-d and an overall length of from one screw revolution to l-(D-d), preferably one-half L or less and most preferably one to two revolutions. The short screw flight is economical and readily adjusted. The screw flight has a thickness of from about 0.05 to 15 inch and has a symmetrically curved outer edge. Collector tube is flared at its lower end to direct water away from the electrode mast as the water is discharged from the tube. The discharge electrode is supported from above and centered by means of adjustable tie rods at its lower end.

Bakke, E.; Willett, H.P.

1983-06-21T23:59:59.000Z

45

Electrostatic Free Energy and its Variations in Implicit Solvent Models  

E-Print Network [OSTI]

Electrostatic Free Energy and its Variations in Implicit Solvent Models Jianwei Che , Joachim. The unique set of such concentrations that minimize this free energy are given by the usual Boltzmann. The variation of the electrostatic free energy with respect to the location change of solute-solvent interfaces

Li, Bo

46

A Nystrom algorithm for electrostatics of an anisotropic composite  

E-Print Network [OSTI]

A Nystrom algorithm for electrostatics of an anisotropic composite Johan Helsing Department algorithms for the electrostatics of locally anisotropic composites seems to be a poorly explored area ective properties of lo- cally anisotropic composites is a topic of importance in physics and in physical

Helsing, Johan

47

Construction of an Electrostatic Energy Analyzer for the EQUARS Scientific Satellite  

E-Print Network [OSTI]

Construction of an Electrostatic Energy Analyzer for the EQUARS Scientific Satellite The ELISAScientific Objectives Electron Precipitation in the South Atlantic Magnetic Anomaly Electrons with E with IONEX project (fluctuations) The Electrostatic Energy AnalyzerThe Electrostatic Energy Analyzer rext

48

A System-Level Electrostatic-Discharge-Protection Modeling Methodology for Time-  

E-Print Network [OSTI]

A System-Level Electrostatic-Discharge- Protection Modeling Methodology for Time- Domain Analysis. Index Terms--Electromagnetic compatibility (EMC), electrostatic discharge (ESD), modeling, system level precise simulations of electrostatic discharge (ESD) stress propagation on a printed circuit board (PCB

Boyer, Edmond

49

Electrostatics and packing in biomolecules : accounting for conformational change in protein folding and binding  

E-Print Network [OSTI]

The role of electrostatics and packing in protein folding and molecular association was assessed in different biomolecular systems. A continuum electrostatic model was applied to long-range electrostatic effects in the ...

Caravella, Justin Andrew, 1974-

2002-01-01T23:59:59.000Z

50

Electrostatic control of acid mist emissions  

SciTech Connect (OSTI)

This paper describes a two-phased study of the control of acid mist emissions using a compact, wet electrostatic precipitator (WESP). The goal of the study was to determine the degree of acid mist control that could be achieved when a compact WESP is used to replace or augment the mist eliminators in a flue gas desulfurization (FGD) system. Phase I of the study examined the electrical operation of a lab-scale WESP collecting an acid mist from a coal combustion pilot plant equipped with a spray chamber. The results of this study were used to develop and validate a computer model of the WESP. In Phase II, measurements were made at two utility scrubber installations to determine the loadings of acid mist, fly ash, and scrubber carryover. These measurements were used as input to the model to project the performance of a retrofitted WESP.

Dahlin, R S [Southern Research Inst., Birmingham, AL (United States)] [Southern Research Inst., Birmingham, AL (United States); Brown, T D [USDOE Pittsburgh Energy Technology Center, PA (United States)] [USDOE Pittsburgh Energy Technology Center, PA (United States)

1991-01-01T23:59:59.000Z

51

Electrostatic and Magnetic Fields in Bilayer Graphene  

E-Print Network [OSTI]

We compute the transmission probability through rectangular potential barriers and p-n junctions in the presence of a magnetic and electric fields in bilayer graphene taking into account the full four bands of the energy spectrum. For energy E higher than the interlayer coupling $\\gamma_1 (E>\\gamma_1)$ two propagation modes are available for transport giving rise to four possible ways for transmission and reflection probabilities. However, when the energy is less then the height of the barrier the Dirac fermions exhibits transmission resonances and only one mode of propagation is available. We study the effect of the interlayer electrostatic potential $\\delta$ and the different geometry parameters of the barrier on the transmission probability.

Ahmed Jellal; Ilham Redouani; Hocine Bahlouli

2014-11-14T23:59:59.000Z

52

Electrode supporting base for electrostatic precipitators  

SciTech Connect (OSTI)

The disclosure relates to a base for supporting hollow cylindrical and circular in cross section collector electrodes for an electrostatic precipitator. The base comprises a central portion and is generally circular; a plurality of arcuate venturi and collector trough assemblies which are generally circular and which intersect radially disposed drain troughs; said venturi and collector trough assemblies being concentric with said center portion of said base and drain troughs extending radially outward from said center portion; a circular wall structure secured to outer ends of said drain troughs; fixture means for securing said collector electrodes on said drain troughs; uppermost portions of said drain troughs and said venturi and collector troughs being substantially flush with each other and said venturi and collector trough assemblies disposed on a common plane to provide for uniform laminar flow relative to the collector electrodes.

Honacker, H.

1981-01-20T23:59:59.000Z

53

Magnetic and electrostatic confinement of plasma with tuning of electrostatic field  

DOE Patents [OSTI]

A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

Rostoker, Norman (Irvine, CA); Binderbauer, Michl (Irvine, CA); Qerushi, Artan (Irvine, CA); Tahsiri, Hooshang (Irvine, CA)

2008-10-21T23:59:59.000Z

54

Magnetic and electrostatic confinement of plasma with tuning of electrostatic field  

DOE Patents [OSTI]

A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

Rostoker, Norman; Binderbauer, Michl; Qerushi, Artan; Tahsiri, Hooshang

2006-03-21T23:59:59.000Z

55

Magnetic and electrostatic confinement of plasma with tuning of electrostatic field  

DOE Patents [OSTI]

A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

Rostoker, Norman; Binderbauer, Michl; Qerushi, Artan; Tahsiri, Hooshang

2006-10-10T23:59:59.000Z

56

ELECTROSTATIC MODE ASSOCIATED WITH PINCH VELOCITY IN RFPS  

SciTech Connect (OSTI)

The existence of a new electrostatic instability is shown for RFP (reversed field pinch) equilibria. This mode arises due to the non-zero equilibrium radial flow (pinch flow). In RFP simulations with no-stress boundary conditions on the tangential velocity at the radial wall, this electrostatic mode is unstable and dominates the nonlinear dynamics, even in the presence of the MHD modes typically responsible for the reversal of the axial magnetic field at edge. Nonlinearly, this mode leads to two beams moving azimuthally towards each other, which eventually collide. The electrostatic mode can be controlled by using Dirichlet (no-slip) boundary conditions on the azimuthal velocity at the radial wall.

DELZANNO, GIAN LUCA [Los Alamos National Laboratory; FINN, JOHN M. [Los Alamos National Laboratory; CHACON, LUIS [Los Alamos National Laboratory

2007-02-08T23:59:59.000Z

57

Differences in Electrostatic Potential Around DNA Fragments Containing Guanine and 8-oxo-Guanine  

SciTech Connect (OSTI)

hanges of electrostatic potential (EP) around the DNA molecule resulting from chemical modifications of nucleotides may play a role in enzymatic recognition of damaged sites. Effects of chemical modifications of nucleotides on the structure of DNA have been characterized through large scale density functional theory computations. Quantum mechanical structural optimizations of DNA fragments with three pairs of nucleotoides and accompanying counteractions were performed with a B3LYP exchange-correlation functional and 6-31G** basis sets. The “intact” DNA fragment contained guanine in the middle layer, while the “damaged” fragment had the guanine replaced with 8-oxo-guanine. The electrostatic potential around these DNA fragments was projected on a surface around the double helix. The 2D maps of EP of intact and damaged DNA fragments were analyzed to identify these modifications of EP that result from the occurrence of 8-oxo-guanine. It was found that distortions of the phosphate groups and displacements of the accompanying countercations are clearly reflected in the EP maps.

Haranczyk, Maciej; Gutowski, Maciej S.

2007-02-01T23:59:59.000Z

58

Electrostatic shape-shifting ion optics  

DOE Patents [OSTI]

Electrostatic shape-shifting ion optics includes an outer electrode that defines an interior region between first and second opposed open ends. A first inner electrode is positioned within the interior region of the outer electrode at about the first open end. A second inner electrode is positioned within the interior region of the outer electrode at about the second open end. A first end cap electrode is positioned at about a first open end of the first inner electrode so that the first end cap electrode substantially encloses the first open end of the first inner electrode. A second end cap electrode is positioned at about a second open end of the second inner electrode so that the second end cap electrode substantially encloses the second open end of the second inner electrode. A voltage source operatively connected to each of the electrodes applies voltage functions to each of the electrodes to produce an electric field within an interior space enclosed by the electrodes.

Dahl, David A.; Scott, Jill R.; Appelhans, Anthony D.

2006-05-02T23:59:59.000Z

59

Electrostatic precipitation of condensed acid mist  

SciTech Connect (OSTI)

Southern Research Institute is developing a compact, wet electrostatic precipitator (WESP) to control acid mist missions from high-sulfur coal combustion. The WESP is being developed as a retrofit technology for existing coal-fired power plants, particularly those equipped with wet flue gas desulfurization (FGD) scrubbers. Acid mist emissions can be a significant problem at these facilities because the sulfuric acid vapor in the flue gas is converted to a very fine mist that is not collected in the scrubber system. Conventional mist eliminators are not adequate in this application due to the very fine size of the mist droplets. The potential for corrosion also makes it difficult to use a fabric filter or a conventional, dry ESP in this application. Therefore, this research project has been structured around the development of a compact WESP that could be retrofit on top of an existing scrubber or within an existing flue gas duct. This paper describes the development and testing of a prototype WESP for the utility acid mist application. Testing was conducted with combustion of sulfur-doped gas to simulate the acid mist alone, and with a combination of coal and sulfur-doped gas to simulate the mixture of acid mist and fly ash downstream from a scrubber. The performance of the WESP test unit was modeled using two different cylindrical-geometry computer models: a current-seeking'' model and a current-specific'' model. 8 refs., 15 figs., 7 tabs.

Dahlin, R.S.

1989-11-01T23:59:59.000Z

60

Electrostatic precipitation of condensed acid mist  

SciTech Connect (OSTI)

This project addresses the acid mist that is formed by condensation of sulfuric acid vapor in flue gas from coal-fired utility boilers. An acid mist can be formed whenever the flue gas temperature approaches the prevailing acid dew point. This commonly occurs when the gas is subjected to rapid adiabatic cooling in a wet scrubber system for flue gas desulfurization. Acid mists can also sometimes result from unexpected temperature excursions caused by air inleakage, load cycling, and start-up operations. A wet electrostatic precipitator (WESP) is the best control option for acid mist. The mist would blind a fabric filter and attach glass fiber fabrics. A wet ESP is required because the acid would quickly corrode the plates in a conventional dry ESP. The wet ESP also offers the advantages of no rapping reentrainment and no sensitivity to fly ash resistivity. Therefore, this program has been structured around the use of a compact, wet ESP to control acid mist emissions. Progress to date is discussed. 7 refs., 1 fig.

Not Available

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Electrostatic precipitation of condensed acid mist  

SciTech Connect (OSTI)

This project addresses the acid mist that is formed by condensation of sulfuric acid vapor in flue gas from coal-fired utility boilers. An acid mist can be formed whenever the flue gas temperature approaches the prevailing acid dew point. This commonly occurs when the gas is subjected to rapid adiabatic cooling in a wet scrubber system for flue gas desulfurization. Acid mists can also sometimes result from unexpected temperature excursions caused by air inleakage, load cycling, and start-up operations. A wet electrostatic precipitator (WESP) is the best control option for acid mist. The mist would blind a fabric filter and attack glass fiber fabrics. A wet ESP is required because the acid would quickly corrode the plates in a conventional dry ESP. The wet ESP also offers the advantages of no rapping reentrainment and no sensitivity to fly ash resistivity. Therefore, this program has been structured around the use of a compact, wet ESP to control acid mist emissions. 7 refs.

Not Available

1990-01-01T23:59:59.000Z

62

A NEW ELECTROSTATIC RADON PROGENY COLLECTION METHOD  

E-Print Network [OSTI]

A new method for collecting radon progeny was investigated that reduces particle concentration including radon progeny in indoor air without air movement. The LECA (for bge Electrostatically Charged-) system uses a high voltage source to charge the collector surfaces (e.g., furniture pieces were used) once they have been electrically isolated from ground by teflon film. When a piece was touched by the high voltage lead its entire surface immediately become charged to about 60 % of the line voltage regardless of its material makeup. By limiting the current to 250 ua no sparking or shock sensation was experienced when touching the charged wire or collector surfaces. Progeny collection efficiencies were measured for collector areas from 8.6 to 5 1.8 m2 and voltages from 2.5 to 9 KV in an 82 m3 test-room. The optimum LECA configuration tested reduced all particulate in the test-room including both the attached and unattached progeny by about 92%. BACKGROUND Lung cancer, the priiciple radon health effect, is not caused by the radon gas itself but by its progeny, especially by the smaller unattached progeny particles that can penetrate into the deep respiratory tract. Several researchers have investigated methods of reducing progeny in indoor air but most methods tried have been unsuccessful because of their inability to remove enough of those more hazardous unattached progeny.

John C. Dempsey; Rad Elec Inc; Darold M. Wobschall

63

A hybrid double-dot in silicon  

SciTech Connect (OSTI)

We report electrical measurements of a single arsenic dopant atom in the tunnel barrier of a silicon single-electron transistor (SET). In addition to performing the electrical characterisation of the individual dopants, we study the series electrical transport through the dopant and SET. We measure the bias triangles of this hybrid double-dot and show that we can tune the electrostatic coupling between the two sub-systems. Additionally, we measured SET in which an additional plunger gate allows the reduction of the electron number in the SET down to the few-electron regime where the dot presents well-defined spin configurations. Finally, we discuss the challenges of operating a dopant-dot hybrid system in the few-electron regime.

Gonzalez-Zalba, M. F.; Heiss, D.; Ferguson, A. J. [Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge (United Kingdom)

2013-12-04T23:59:59.000Z

64

What can we learn from neutrinoless double beta decay experiments? John N. Bahcall,* Hitoshi Murayama,  

E-Print Network [OSTI]

What can we learn from neutrinoless double beta decay experiments? John N. Bahcall,* Hitoshi-generation neutrinoless double beta decay and normal neutrino beta decay experi- ments can answer four fundamental questions. 1 If neutrinoless double beta decay searches do not detect a signal, and if the spectrum is known

Bahcall, John

65

Electrostatic precipitation of condensed acid mist  

SciTech Connect (OSTI)

This report deals with the second part (Phase 2) of a two-phased study of the control of acid mist emissions using a compact, wet electrostatic precipitator (WESP). The goal of the study was to determine the degree of acid mist control that could be achieved when a compact WESP was used to replace or augment the mist eliminators in a flue gas desulfurization (FGD) system. Phase 1 of the study examined the electrical operation of a lab-scale WESP collecting an acid mist from a coal combustion pilot plant equipped with a spray chamber. The results of this study were used to develop and validate a computer model of the WESP. In Phase 2, measurements were made at two utility scrubber installations to determine the loadings of acid mist, fly ash, and scrubber carryover. These measurements were used as input to the computer model to project the performance of retrofitted WESPs at both of the utility test sites. Phase 1 results showed that excellent electrical operating conditions could be achieved, but very high loadings of acid mist or the fine fly ash tended to degrade electrical operation because of space charge suppression of the corona current. Measurements made at the utility sites under Phase 2 showed that acid mist accounted for 40 to 57% of the total particulate mass, while fly ash and scrubber solids accounted for 40 to 55% and 1.0 to 3.4%. Impactor samples from both test sites showed an increase in acid content with decreasing particle size. 9 refs., 14 figs., 13 tabs.

Dahlin, R.S.

1991-04-01T23:59:59.000Z

66

Double Beta Decay: Scintillators  

E-Print Network [OSTI]

Scintillator detectors can be used in experiments searching for neutrinoless double beta decay. A wide variety of double beta decay candidate isotopes can be made into scintillators or can be loaded into scintillators. Experimental programs developing liquid xenon, inorganic crystals, and Nd-loaded liquid scintillator are described in this review. Experiments with 48Ca and 150Nd benefit from their high endpoint which places the neutrinoless double beta decay signal above most backgrounds from natural radioactivity.

Mark C. Chen

2008-10-20T23:59:59.000Z

67

Normal Curvature . . . Geodesic Curvature . . .  

E-Print Network [OSTI]

Normal Curvature . . . Geodesic Curvature . . . Home Page Title Page Page 683 of 711 Go Back Full quadratic form associated with a surface. #12;Normal Curvature . . . Geodesic Curvature . . . Home Page Title Page Page 684 of 711 Go Back Full Screen Close Quit The component g is called the geodesic

Gallier, Jean

68

Deionization and desalination using electrostatic ion pumping  

DOE Patents [OSTI]

The present invention provides a new method and apparatus/system for purifying ionic solutions, such as, for example, desalinating water, using engineered charged surfaces to sorb ions from such solutions. Surface charge is applied externally, and is synchronized with oscillatory fluid movements between substantially parallel charged plates. Ions are held in place during fluid movement in one direction (because they are held in the electrical double layer), and released for transport during fluid movement in the opposite direction by removing the applied electric field. In this way the ions, such as salt, are "ratcheted" across the charged surface from the feed side to the concentrate side. The process itself is very simple and involves only pumps, charged surfaces, and manifolds for fluid collection.

Bourcier, William L. (Livermore, CA); Aines, Roger D. (Livermore, CA); Haslam, Jeffery J. (Livermore, CA); Schaldach, Charlene M. (Pleasanton, CA); O'Brien, Kevin C. (San Ramon, CA); Cussler, Edward (Edina, MN)

2011-07-19T23:59:59.000Z

69

Deionization and desalination using electrostatic ion pumping  

DOE Patents [OSTI]

The present invention provides a new method and apparatus/system for purifying ionic solutions, such as, for example, desalinating water, using engineered charged surfaces to sorb ions from such solutions. Surface charge is applied externally, and is synchronized with oscillatory fluid movements between substantially parallel charged plates. Ions are held in place during fluid movement in one direction (because they are held in the electrical double layer), and released for transport during fluid movement in the opposite direction by removing the applied electric field. In this way the ions, such as salt, are "ratcheted" across the charged surface from the feed side to the concentrate side. The process itself is very simple and involves only pumps, charged surfaces, and manifolds for fluid collection.

Bourcier, William L.; Aines, Roger D.; Haslam, Jeffery J.; Schaldach, Charlene M.; O'Brien, Kevin C.; Cussler, Edward

2013-06-11T23:59:59.000Z

70

Double beta decay experiments  

E-Print Network [OSTI]

The present status of double beta decay experiments are reviewed. The results of the most sensitive experiments, NEMO-3 and CUORICINO, are discussed. Proposals for future double beta decay experiments are considered. In these experiments sensitivity for the effective neutrino mass will be on the level of (0.1-0.01) eV.

A. S. Barabash

2006-02-22T23:59:59.000Z

71

Double beta decay experiments  

E-Print Network [OSTI]

The present status of double beta decay experiments is reviewed. The results of the most sensitive experiments are discussed. Proposals for future double beta decay experiments with a sensitivity to the $$ at the level of (0.01--0.1) eV are considered.

A. S. Barabash

2011-07-28T23:59:59.000Z

72

Electrostatic precipitator for metal and particulate emission control  

SciTech Connect (OSTI)

Improving air pollution control systems is crucial for incinerators to be an option for sewage sludge disposal. Combinations of venturi and tray tower scrubbers are the most popular air pollution control system for sewage sludge incinerators. Recently wet electrostatic precipitators have been installed downstream of the scrubbing system to ensure the compliance of new regulations. Performance and stack tests were conducted on sludge incinerators at Somerset Raritan Valley Sewage Authority and New England Treatment Company. Efficiencies in terms of heavy metal and particulate removals are presented. This paper also describes sewage sludge incinerators, existing air pollution control systems, design considerations of the wet electrostatic precipitator, as well as sampling and analysis methods.

Yang, C.L.; Beltran, M.

2000-03-01T23:59:59.000Z

73

Arbitrary amplitude double layers in warm dust kinetic Alfven wave plasmas  

SciTech Connect (OSTI)

Large amplitude electrostatic structures associated with low-frequency dust kinetic Alfvenic waves are investigated under the pressure (temperature) gradient indicative of dust dynamics. The set of equations governing the dust dynamics, Boltzmann electrons, ions and Maxwell's equation have been reduced to a single equation known as the Sagdeev potential equation. Parameter ranges for the existence of arbitrary amplitude double layers are observed. Exact analytical expressions for the energy integral is obtained and computed numerically through which sub-Alfvenic arbitrary amplitude rarefactive double layers are found to exist.

Gogoi, Runmoni; Devi, Nirupama [Department of Mathematics, Cotton College, Guwahati-781001, Assam (India)

2008-07-15T23:59:59.000Z

74

Tuning size and electrostatics in non-polar colloidal asphaltene suspensions by polymeric adsorption  

E-Print Network [OSTI]

Tuning size and electrostatics in non-polar colloidal asphaltene suspensions by polymeric as a function of dispersant concentration, suggesting electrostatic repulsion as the primary stabilizing force lead to charge-stabilization of asphaltene colloids. Introduction Asphaltene precipitation causes

Firoozabadi, Abbas

75

Situ Discovery Electrostatic Potential, Trapping Electrons and Mediating Fast Reconnection Earth's Magnetotail  

E-Print Network [OSTI]

Situ Discovery Electrostatic Potential, Trapping Electrons and Mediating Fast Reconnection Earth phase distributions, measured Wind spacecraft a rare crossing diffusion region in Earth's magnetotail, the presence a strong electrostatic potential within ion diffusion region is revealed. potential reaching

Egedal, Jan

76

Neutrinoless double beta decay  

E-Print Network [OSTI]

The physics potential of neutrinoless double beta decay is discussed. Furthermore, experimental considerations are presented as well as the current status of experiments. Finally an outlook towards the future, work on nuclear matrix elements and alternative processes is given.

K. Zuber

2012-01-23T23:59:59.000Z

77

Neutrinoless Double $?$-Decay  

E-Print Network [OSTI]

The neutrinoless double $\\beta$-decay is reviewed. Model independent evidence in favor of neutrino masses and mixing is briefly summarized. The data of the recent experiments on the search for $0\

S. M. Bilenky

2004-03-23T23:59:59.000Z

78

Double Beta Decay  

E-Print Network [OSTI]

The motivation, present status, and future plans of the search for the neutrinoless double beta decay are reviewed. It is argued that, motivated by the recent observations of neutrino oscillations, there is a reasonable hope that neutrinoless double beta decay corresponding to the neutrino mass scale suggested by oscillations, of about 50 meV, actually exists. The challenges to achieve the sensitivity corresponding to this mass scale, and plans to overcome them, are described.

Steven R. Elliott; Petr Vogel

2002-02-27T23:59:59.000Z

79

Charge Trapping in Carbon Nanotube Loops Demonstrated by Electrostatic  

E-Print Network [OSTI]

Charge Trapping in Carbon Nanotube Loops Demonstrated by Electrostatic Force Microscopy Thomas Sand ABSTRACT Electronic devices made from carbon nanotubes (CNTs) can be greatly affected by substrate charges nanotube loops for extended periods of time, showing that nanotubes can act as confining barriers

Nygård, Jesper

80

Experiment for Plasma Energization with Beating Electrostatic Waves  

E-Print Network [OSTI]

Experiment for Plasma Energization with Beating Electrostatic Waves IEPC-2009-199 Presented September 20­24, 2009 Benjamin Jorns and Edgar Y. Choueiri Electric Propulsion and Plasma Dynamics Laboratory, Princeton University, Princeton, NJ, 08540 An experimental study of plasma heating by means

Choueiri, Edgar

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Electrostatic quadrupole focused particle accelerating assembly with laminar flow beam  

DOE Patents [OSTI]

A charged particle accelerating assembly provided with a predetermined ratio of parametric structural characteristics and with related operating voltages applied to each of its linearly spaced focusing and accelerating quadrupoles, thereby to maintain a particle beam traversing the electrostatic fields of the quadrupoles in the assembly in an essentially laminar flow through the assembly.

Maschke, A.W.

1984-04-16T23:59:59.000Z

82

Electrostatics of pyroelectric accelerators T. Z. Fullem and Y. Danona  

E-Print Network [OSTI]

Electrostatics of pyroelectric accelerators T. Z. Fullem and Y. Danona Department of Mechanical for calculating the potential and field strength in both single-crystal and two-crystal pyroelectric accelerators for better understanding of pyroelectric accelerators. © 2009 American Institute of Physics. doi:10

Danon, Yaron

83

Electrostatic Interchange Instabilities of a Rotating, High-Temperature Plasma  

E-Print Network [OSTI]

Electrostatic Interchange Instabilities of a Rotating, High-Temperature Plasma Confined by a Dipole #2 Mach Probe #1 Mach Probe #2 High-field, 0.2 MA-turn Water-cooled Magnet #12;Interchange Modes-sized/global... Fast hot electron interchange instability: drift-resonant transport; Gryokinetics; phase-space holes

Mauel, Michael E.

84

Electric Charge and Electric Field Electrostatics: Charge at rest  

E-Print Network [OSTI]

Chapter 16 Electric Charge and Electric Field #12;Electrostatics: Charge at rest Electric Charges of conservation of Electric Charge: The net amount of electric charge produced in any process is zero. Model, neutral). #12;· All protons and electrons have same magnitude of electric charge but their masses

Yu, Jaehoon

85

Frequency-dependent electrostatic actuation in microfluidic MEMS.  

SciTech Connect (OSTI)

Electrostatic actuators exhibit fast response times and are easily integrated into microsystems because they can be fabricated with standard IC micromachining processes and materials. Although electrostatic actuators have been used extensively in 'dry' MEMS, they have received less attention in microfluidic systems probably because of challenges such as electrolysis, anodization, and electrode polarization. Here we demonstrate that ac drive signals can be used to prevent electrode polarization, and thus enable electrostatic actuation in many liquids, at potentials low enough to avoid electrochemistry. We measure the frequency response of an interdigitated silicon comb-drive actuator in liquids spanning a decade of dielectric permittivities and four decades of conductivity, and present a simple theory that predicts the characteristic actuation frequency. The analysis demonstrates the importance of the native oxide on silicon actuator response, and suggests that the actuation frequency can be shifted by controlling the thickness of the oxide. For native silicon devices, actuation is predicted at frequencies less than 10 MHz, in electrolytes of ionic strength up to 100 mmol/L, and thus electrostatic actuation may be feasible in many bioMEMS and other microfluidic applications.

Zavadil, Kevin Robert; Michalske, Terry A.; Sounart, Thomas L.

2003-09-01T23:59:59.000Z

86

Stray capacitances in the watt balance operation: electrostatic forces  

E-Print Network [OSTI]

In a watt balance, stray capacitances exist between the coil and the magnet. Since the electric current flowing in the coil originates a difference between the coil and magnet electric-potentials, their electrostatic interactions must be taken into account. This paper reports the results of a finite element analysis of the forces acting on the coil.

Quagliotti, Danilo

2014-01-01T23:59:59.000Z

87

Development of an Electrostatic Energy Analyzer (ESA) for the EQUARS Scientific Satellite  

E-Print Network [OSTI]

Development of an Electrostatic Energy Analyzer (ESA) for the EQUARS Scientific Satellite R. S of an electrostatic energy analyzer to be launched onboard the EQUARS Scientific Satellite. The instrument of scientific instrument: ESA: Electrostatic Energy Analyzer 2. Physical parameters to be measured: Electron

88

Field-and concentration-dependence of electrostatics in non-polar colloidal asphaltene suspensions  

E-Print Network [OSTI]

Field- and concentration-dependence of electrostatics in non-polar colloidal asphaltene suspensions.1039/c2sm06865f Electrostatic stabilization has recently been found to be an important factor in non-range nature of electrostatics in non-polar systems, electrophoretic mobility can depend on both electric

Firoozabadi, Abbas

89

oligomeric and polymeric DNA Large electrostatic differences in the binding thermodynamics of a cationic peptide to  

E-Print Network [OSTI]

oligomeric and polymeric DNA Large electrostatic differences in the binding thermodynamics electrostatic differences in the binding thermodynamics of a cationic peptide to oligomeric and polymeric DNA binding to polymeric and oligomeric DNA are not equivalent because of long-range electrostatic effects

Lohman, Timothy M.

90

Study on plasma parameters and dust charging in an electrostatically plugged multicusp plasma device  

SciTech Connect (OSTI)

The effect of the electrostatic confinement potential on the charging of dust grains and its relationship with the plasma parameters has been studied in an electrostatically plugged multicusp dusty plasma device. Electrostatic plugging is implemented by biasing the electrically isolated magnetic multicusp channel walls. The experimental results show that voltage applied to the channel walls can be a controlling parameter for dust charging.

Kakati, B.; Kausik, S. S.; Saikia, B. K. [Centre of Plasma Physics, Institute for Plasma Research, Nazirakhat, Sonapur-782 402, Kamrup, Assam (India); Bandyopadhyay, M. [ITER-India, Institute for Plasma Research, Bhat, Gandhinagar- 382 428 (India)

2011-06-15T23:59:59.000Z

91

Effects of obliqueness and strong electrostatic interaction on linear and nonlinear propagation of dust-acoustic waves in a magnetized strongly coupled dusty plasma  

SciTech Connect (OSTI)

Linear and nonlinear propagation of dust-acoustic waves in a magnetized strongly coupled dusty plasma is theoretically investigated. The normal mode analysis (reductive perturbation method) is employed to investigate the role of ambient/external magnetic field, obliqueness, and effective electrostatic dust-temperature in modifying the properties of linear (nonlinear) dust-acoustic waves propagating in such a strongly coupled dusty plasma. The effective electrostatic dust-temperature, which arises from strong electrostatic interactions among highly charged dust, is considered as a dynamical variable. The linear dispersion relation (describing the linear propagation characteristics) for the obliquely propagating dust-acoustic waves is derived and analyzed. On the other hand, the Korteweg-de Vries equation describing the nonlinear propagation of the dust-acoustic waves (particularly, propagation of dust-acoustic solitary waves) is derived and solved. It is shown that the combined effects of obliqueness, magnitude of the ambient/external magnetic field, and effective electrostatic dust-temperature significantly modify the basic properties of linear and nonlinear dust-acoustic waves. The results of this work are compared with those observed by some laboratory experiments.

Shahmansouri, M. [Department of Physics, Faculty of Science, Arak University, Arak 38156- 8 8349 (Iran, Islamic Republic of)] [Department of Physics, Faculty of Science, Arak University, Arak 38156- 8 8349 (Iran, Islamic Republic of); Mamun, A. A. [Department of Physics, Jahangirnagar University, Savar, Dhaka-1342 (Bangladesh)] [Department of Physics, Jahangirnagar University, Savar, Dhaka-1342 (Bangladesh)

2014-03-15T23:59:59.000Z

92

Energy conservation in electrostatic fabric filtration of industrial dust  

SciTech Connect (OSTI)

Conservation in energy consumption in industrial fabric filtration systems has become very important due to the substantial increase in energy costs. Recently, an external electric field was utilized in the industrial dust control by fabric filters with very promising initial results. A substantial decrease in the pressure drop and an increase in collection efficiency were observed. The detailed outcome of the experimental research program in electrostatic fabric filtration was presented. The results show that pressure drop decreases substantially with the increased electrostatic field strength for all relevant parameters. Furthermore, the data of the experimental program was utilized to develop a semi-empirical model for the determination of the pressure drop and to establish an Energy-Optimized Design Criteria.

Ariman, T.

1981-12-01T23:59:59.000Z

93

Microturbulence in DIII-D tokamak pedestal. I. Electrostatic instabilities  

SciTech Connect (OSTI)

Gyrokinetic simulations of electrostatic driftwave instabilities in a tokamak edge have been carried out to study the turbulent transport in the pedestal of an H-mode plasma. The simulations use annulus geometry and focus on two radial regions of a DIII-D experiment: the pedestal top with a mild pressure gradient and the middle of the pedestal with a steep pressure gradient. A reactive trapped electron instability with a typical ballooning mode structure is excited by trapped electrons in the pedestal top. In the middle of the pedestal, the electrostatic instability exhibits an unusual mode structure, which peaks at the poloidal angle ?=±?/2. The simulations find that this unusual mode structure is due to the steep pressure gradients in the pedestal but not due to the particular DIII-D magnetic geometry. Realistic DIII-D geometry appears to have a stabilizing effect on the instability when compared to a simple circular tokamak geometry.

Fulton, D. P.; Holod, I. [Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States)] [Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States); Lin, Z., E-mail: zhihongl@uci.edu [Department of Physics and Astronomy, University of California, Irvine, California 92697 (United States); Fusion Simulation Center, Peking University, Beijing 100871 (China); Xiao, Y. [Institute of Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China)] [Institute of Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 (China)

2014-04-15T23:59:59.000Z

94

ELECTROSTATIC MODELING OF THE JEFFERSON LABORATORY INVERTED CERAMIC GUN  

SciTech Connect (OSTI)

Jefferson Laboratory (JLab) is currently developing a new 500kV DC electron gun for future use with the FEL. The design consists of two inverted ceramics which support a central cathode electrode. This layout allows for a load-lock system to be located behind the gun chamber. The electrostatic geometry of the gun has been designed to minimize surface electric field gradients and also to provide some transverse focusing to the electron beam during transit between the cathode and anode. This paper discusses the electrode design philosophy and presents the results of electrostatic simulations. The electric field information obtained through modeling was used with particle tracking codes to predict the effects on the electron beam.

P. Evtushenko ,F.E. Hannon, C. Hernandez-Garcia

2010-05-01T23:59:59.000Z

95

Apparatus for magnetic and electrostatic confinement of plasma  

DOE Patents [OSTI]

An apparatus and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions ions are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

Rostoker, Norman; Binderbauer, Michl

2013-06-11T23:59:59.000Z

96

Electrostatic dispersion lenses and ion beam dispersion methods  

DOE Patents [OSTI]

An EDL includes a case surface and at least one electrode surface. The EDL is configured to receive through the EDL a plurality of ion beams, to generate an electrostatic field between the one electrode surface and either the case surface or another electrode surface, and to increase the separation between the beams using the field. Other than an optional mid-plane intended to contain trajectories of the beams, the electrode surface or surfaces do not exhibit a plane of symmetry through which any beam received through the EDL must pass. In addition or in the alternative, the one electrode surface and either the case surface or the other electrode surface have geometries configured to shape the field to exhibit a less abrupt entrance and/or exit field transition in comparison to another electrostatic field shaped by two nested, one-quarter section, right cylindrical electrode surfaces with a constant gap width.

Dahl, David A. (Idaho Falls, ID) [Idaho Falls, ID; Appelhans, Anthony D. (Idaho Falls, ID) [Idaho Falls, ID

2010-12-28T23:59:59.000Z

97

Apparatus for magnetic and electrostatic confinement of plasma  

DOE Patents [OSTI]

An apparatus and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

Rostoker, Norman; Binderbauer, Michl

2006-04-11T23:59:59.000Z

98

Apparatus for magnetic and electrostatic confinement of plasma  

DOE Patents [OSTI]

An apparatus and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

Rostoker, Norman; Binderbauer, Michl

2006-10-31T23:59:59.000Z

99

Ion-beam-driven electrostatic ion cyclotron instabilities  

SciTech Connect (OSTI)

We present results of numerical simulations on the electrostatic ion cyclotron instabilities driven by the ion beam parallel to the magnetic field. For the beam speed exceeding the thermal speed of background ions and the beam temperature much lower than the background ion temperature, it is found that the instability results in strong perpendicular heating and slowing down of parallel drift of the beam ions, leading to the saturation of the instability. Applications to plasma heating and space plasma physics are discussed.

Miura, A.; Okuda, H.; Ashour-Abdalla, M.

1982-10-01T23:59:59.000Z

100

Ion pump activity generates fluctuating electrostatic forces in biomembranes  

E-Print Network [OSTI]

We study the non-equilibrium dynamics of lipid membranes with proteins that actively pump ions across the membrane. We find that the activity leads to a fluctuating force distribution due to electrostatic interactions arising from variation in dielectric constant across the membrane. By applying a multipole expansion we find effects on both the tension and bending rigidity dominated parts of the membranes fluctuation spectrum. We discuss how our model compares with previous studies of force-multipole models.

B. Loubet; M. A. Lomholt

2011-09-19T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Electrostatic waves in carbon nanotubes with an axial magnetic field  

SciTech Connect (OSTI)

Based on a linearized hydrodynamic model and within the quasi-static approximation, the dispersion relation of electrostatic waves propagating through single-walled carbon nanotubes subject to an axial magnetic field is theoretically explored. In the classical limit, we obtain two main possible waves which in turn are divided into two branches, a low-frequency acoustical and a high-frequency optical plasmon branch. In the quantum case, we have found that the dispersion relation is substantially modified when the electron wavelength becomes large enough compared to the propagation wavelength of the electrostatic waves in the quantum plasma. We also show that the axial magnetic field manifest itself on the perturbed electron density through the quantum term and gives rise to the propagation of the electrostatic waves within the quantum plasma. As a result, the effect of the magnetic field is pronounced in the plasma dispersion relations in such a way that their curves approach to zero when the magnetic field is weak; and for the strong magnetic field, they asymptotically meet the constant lines.

Abdikian, Alireza [Department of Physics, Malayer University, Malayer 65719-95863 (Iran, Islamic Republic of)] [Department of Physics, Malayer University, Malayer 65719-95863 (Iran, Islamic Republic of); Bagheri, Mehran [Laser and Plasma Research Institute, Shahid Beheshti University, G. C., Evin, Tehran 19835-63113 (Iran, Islamic Republic of)] [Laser and Plasma Research Institute, Shahid Beheshti University, G. C., Evin, Tehran 19835-63113 (Iran, Islamic Republic of)

2013-10-15T23:59:59.000Z

102

DOUBLE MAJORS Imaging Science + ...  

E-Print Network [OSTI]

DOUBLE MAJORS Imaging Science + ... Applied Mathematics Biomedical Sciences Computer Science Undergraduate Research Internships and Cooperative Education (Co-op) (optional) Study Abroad WHY IMAGING SCIENCE Science: BS, MS, PhD Color Science: MS, PhD BS + MS/PhD Combos HUMAN VISION BIO- MEDICAL ASTRO- PHYSICS

Zanibbi, Richard

103

Neutrinoless double beta decay  

E-Print Network [OSTI]

The status of the search for neutrinoless double beta decay is reviewed. The effort to reach the sensitivity needed to cover the effective Majorana neutrino mass corresponding to the degenerate and inverted mass hierarchy is described. Various issues concerning the theory (and phenomenology) of the relation between the $0\

Petr Vogel

2006-11-17T23:59:59.000Z

104

What can we learn from neutrinoless double beta decay experiments?  

E-Print Network [OSTI]

We assess how well next generation neutrinoless double beta decay and normal neutrino beta decay experiments can answer four fundamental questions. 1) If neutrinoless double beta decay searches do not detect a signal, and if the spectrum is known to be inverted hierarchy, can we conclude that neutrinos are Dirac particles? 2) If neutrinoless double beta decay searches are negative and a next generation ordinary beta decay experiment detects the neutrino mass scale, can we conclude that neutrinos are Dirac particles? 3) If neutrinoless double beta decay is observed with a large neutrino mass element, what is the total mass in neutrinos? 4) If neutrinoless double beta decay is observed but next generation beta decay searches for a neutrino mass only set a mass upper limit, can we establish whether the mass hierarchy is normal or inverted? We base our answers on the expected performance of next generation neutrinoless double beta decay experiments and on simulations of the accuracy of calculations of nuclear matrix elements.

John N. Bahcall; Hitoshi Murayama; Carlos Pena-Garay

2004-04-08T23:59:59.000Z

105

WHY SEARCH FOR DOUBLE BETA DECAY?  

E-Print Network [OSTI]

the search for neutrinoless double beta decay may prove verySearching for neutrinoless double beta decay is the onlysensitivity of neutrinoless double beta decay. The potential

Kayser, B.

2010-01-01T23:59:59.000Z

106

for doubling solar panel  

E-Print Network [OSTI]

An outline for doubling solar panel efficiency C o l o ra do S c ho o l of M i ne s Ma g a z i ne Take a look at a solar panel on a sunny Colorado day and, if you're like most people, you won't see physics professor and solar energy researcher, who admits to checking out his panels and their energy

107

Double Beta Decay Experiments  

SciTech Connect (OSTI)

At present, neutrinoless double beta decay is perhaps the only experiment that can tell us whether the neutrino is a Dirac or a Majorana particle. Given the significance of the 0{nu}{beta}{beta}, there is a widespread interest for these rare event studies employing a variety of novel techniques. This paper describes the current status of DBD experiments. The Indian effort for an underground NDBD experiment at the upcoming INO laboratory is also presented.

Nanal, Vandana [Dept. of Nuclear and Atomic Physics, Tata Institute of Fundamental Research, Mumbai 400 005 (India)

2011-11-23T23:59:59.000Z

108

Electrostatic plasma lens for focusing negatively charged particle beams  

SciTech Connect (OSTI)

We describe the current status of ongoing research and development of the electrostatic plasma lens for focusing and manipulating intense negatively charged particle beams, electrons, and negative ions. The physical principle of this kind of plasma lens is based on magnetic isolation electrons providing creation of a dynamical positive space charge cloud in shortly restricted volume propagating beam. Here, the new results of experimental investigations and computer simulations of wide-aperture, intense electron beam focusing by plasma lens with positive space charge cloud produced due to the cylindrical anode layer accelerator creating a positive ion stream towards an axis system is presented.

Goncharov, A. A.; Dobrovolskiy, A. M.; Dunets, S. M. [Institute of Physics NAS of Ukraine, Kiev 03028, Ave. Nauki 46 (Ukraine); Litovko, I. V. [Institute for Nuclear Research NAS of Ukraine, Kiev 03650, pr. Nauki 47 (Ukraine); Gushenets, V. I.; Oks, E. M. [High-Current Electronics Institute SB of RAS, Tomsk (Russian Federation)

2012-02-15T23:59:59.000Z

109

Synthesizing aluminum particles towards controlling electrostatic discharge ignition sensitivity  

SciTech Connect (OSTI)

Aluminum particles were synthesized with shell thicknesses ranging from 2.7 to 8.3 nm and a constant diameter of 95 nm. These fuel particles were combined with molybdenum trioxide particles and the electrostatic discharge (ESD) sensitivity of the mixture was measured. Results show ignition delay increased as the alumina shell thickness increased. These results correlated with electrical resistivity measurements of the mixture which increased with alumina concentration. A model was developed using COMSOL for ignition of a single Al particle. The ignition delay in the model was consistent with the experimental results suggesting that the primary ESD ignition mechanism is joule heating.

Eric S. Collins; Jeffery P. Gesner; Michelle L. Pantoya; Michael A. Daniels

2014-02-01T23:59:59.000Z

110

Electrostatic Discharge Sensitivity and Electrical Conductivity of Composite Energetic Materials  

SciTech Connect (OSTI)

Composite energetic material response to electrical stimuli was investigated and a correlation between electrical conductivity and ignition sensitivity was examined. The composites consisted of micrometer particle aluminum combined with another metal, metal oxide, or fluoropolymer. Of the nine tested mixtures, aluminum with copper oxide was the only mixture to ignite by electrostatic discharge with minimum ignition energy (MIE) of 25 mJ and an electrical conductivity of 1246.25 nS; two orders of magnitude higher than the next composite. This study showed a similar trend in MIE for ignition triggered by a discharged spark compared with a thermal hot wire source.

Michael A. Daniels; Daniel J. Prentice; Chelsea Weir; Michelle L. Pantoya; Gautham Ramachandran; Tim Dallas

2013-02-01T23:59:59.000Z

111

E-Print Network 3.0 - analysis electrostatic accelerator Sample...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

; Biology and Medicine 2 Fly-Casting in Protein-DNA Binding: Frustration between Protein Folding and Electrostatics Facilitates Target Recognition Summary: Fly-Casting in...

112

Electrostatic self-energy in static black holes with spherical symmetry  

E-Print Network [OSTI]

We determine the expression of the electrostatic self-energy for a point charge in the static black holes with spherical symmetry having suitable properties

B. Linet

2000-06-28T23:59:59.000Z

113

Attractive electrostatic self-assembly of ordered and disordered heterogeneous colloids  

E-Print Network [OSTI]

Ionic colloidal crystals are here defined as multicomponent ordered colloidal structures stabilized by attractive electrostatic interactions. These crystals are colloidal analogues to ionic materials including zincblende, ...

Maskaly, Garry R. (Garry Russell), 1978-

2005-01-01T23:59:59.000Z

114

Electrostatics-driven shape transitions in soft shells  

E-Print Network [OSTI]

Manipulating the shape of nanoscale objects in a controllable fashion is at the heart of designing materials that act as building blocks for self-assembly or serve as targeted drug delivery carriers. Inducing shape deformations by controlling external parameters is also an important way of designing biomimetic membranes. In this paper, we demonstrate that electrostatics can be used as a tool to manipulate the shape of soft, closed membranes by tuning environmental conditions such as the electrolyte concentration in the medium. Using a molecular dynamics-based simulated annealing procedure, we investigate charged elastic shells that do not exchange material with their environment, such as elastic membranes formed in emulsions or synthetic nanocontainers. We find that by decreasing the salt concentration or increasing the total charge on the shell's surface, the spherical symmetry is broken, leading to the formation of ellipsoids, discs, and bowls. Shape changes are accompanied by a significant lowering of the electrostatic energy and a rise in the surface area of the shell. To substantiate our simulation findings, we show analytically that a uniformly charged disc has a lower Coulomb energy than a sphere of the same volume. Further, we test the robustness of our results by including the effects of charge renormalization in the analysis of the shape transitions and find the latter to be feasible for a wide range of shell volume fractions.

Vikram Jadhao; Creighton K. Thomas; Monica Olvera de la Cruz

2014-09-12T23:59:59.000Z

115

Electrostatic spherically symmetric configurations in gravitating nonlinear electrodynamics  

SciTech Connect (OSTI)

We perform a study of the gravitating electrostatic spherically symmetric (G-ESS) solutions of Einstein field equations minimally coupled to generalized nonlinear Abelian gauge models in three space dimensions. These models are defined by Lagrangian densities which are general functions of the gauge field invariants, restricted by some physical conditions of admissibility. They include the class of nonlinear electrodynamics supporting electrostatic spherically symmetric (ESS) nontopological soliton solutions in absence of gravity. We establish that the qualitative structure of the G-ESS solutions of admissible models is fully characterized by the asymptotic and central-field behaviors of their ESS solutions in flat space (or, equivalently, by the behavior of the Lagrangian densities in vacuum and on the point of the boundary of their domain of definition, where the second gauge invariant vanishes). The structure of these G-ESS configurations for admissible models supporting divergent-energy ESS solutions in flat space is qualitatively the same as in the Reissner-Nordstroem case. In contrast, the G-ESS configurations of the models supporting finite-energy ESS solutions in flat space exhibit new qualitative features, which are discussed in terms of the Arnowitt-Deser-Misner mass, the charge, and the soliton energy. Most of the results concerning well-known models, such as the electrodynamics of Maxwell, Born-Infeld, and the Euler-Heisenberg effective Lagrangian of QED, minimally coupled to gravitation, are shown to be corollaries of general statements of this analysis.

Diaz-Alonso, J.; Rubiera-Garcia, D. [LUTH, Observatoire de Paris, CNRS, , USAUniversite Paris Diderot, 5 Place Jules Janssen, 92190 Meudon (France) and Departamento de Fisica, Universidad de Oviedo, Avda. Calvo Sotelo 18, E-33007 Oviedo, Asturias (Spain)

2010-03-15T23:59:59.000Z

116

Electrostatic rogue-waves in relativistically degenerate plasmas  

SciTech Connect (OSTI)

In this paper, we investigate the modulational instability and the possibility of electrostatic rogue-wave propagations in a completely degenerate plasma with arbitrary degree of degeneracy, i.e., relativistically degenerate plasma, ranging from solid density to the astrophysical compact stars. The hydrodynamic approach along with the perturbation method is used to reduce the governing equations to the nonlinear Schrödinger equation from which the modulational instability, the growth rate of envelope excitations and the occurrence of rogue as well as super-rogue waves in the plasma, is evaluated. It is observed that the modulational instability in a fully degenerate plasma can be quite sensitive to the plasma number-density and the wavenumber of envelop excitations. It is further revealed that the relativistically degeneracy plasmas (R{sub 0}?>?1) are almost always modulationally unstable. It is found, however, that the highly energetic sharply localized electrostatic rogue as well as super-rogue waves can exist in the astrophysical compact objects like white dwarfs and neutron star crusts. The later may provide a link to understand many physical processes in such stars and it may lead us to the origin of the random-localized intense short gamma-ray bursts, which “appear from nowhere and disappear without a trace” quite similar to oceanic rogue structures.

Akbari-Moghanjoughi, M. [Department of Physics, Faculty of Sciences, Azarbaijan Shahid Madani University, 51745-406 Tabriz, Iran and International Centre for Advanced Studies in Physical Sciences and Institute for Theoretical Physics, Ruhr University Bochum, D-44780 Bochum (Germany)

2014-10-15T23:59:59.000Z

117

Double Beta Decay  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to UserProduct:Directives Templates8. U.S.Donald R. Baer d37154DoorsDouble

118

What can we learn from neutrinoless double beta decay experiments? John N. Bahcall,* Hitoshi Murayama, + and C. Pen aGaray #  

E-Print Network [OSTI]

What can we learn from neutrinoless double beta decay experiments? John N. Bahcall,* Hitoshi­generation neutrinoless double beta decay and normal neutrino beta decay experi­ ments can answer four fundamental questions. #1# If neutrinoless double beta decay searches do not detect a signal, and if the spectrum

Bahcall, John

119

Design of an Experiment to Optimize Plasma Energization by Beating Electrostatic Waves  

E-Print Network [OSTI]

Design of an Experiment to Optimize Plasma Energization by Beating Electrostatic Waves B. Jorns and E.Y. Choueiri Electric Propulsion and Plasma Dynamics Laboratory, Princeton University, Princeton and amplitude dependence of the heating of a magnetized plasma with beating electrostatic waves is discussed

Choueiri, Edgar

120

Molecular surface electrostatic potentials in the analysis of non-hydrogen-bonding noncovalent interactions  

SciTech Connect (OSTI)

Electrostatic potentials computed on molecular surfaces are used to analyze some noncovalent interactions that are not in the category of hydrogen bonding, e.g. halogen bonding. The systems examined include halogenated methanes, substituted benzenes, s-tetrazine and 1,3-bisphenylurea. The data were obtained by ab initio SCF calculations. Electrostatic potentials, Non-hydrogen-bonding noncovalent interactions, Molecular surfaces.

Murray, J.S.; Paulsen, K.; Politzer, P.

1993-12-27T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Electrostatic Operation and Curvature Modeling for a MEMS Flexible Film Actuator  

E-Print Network [OSTI]

Electrostatic Operation and Curvature Modeling for a MEMS Flexible Film Actuator B. Edmonds, Jr.1 Introduction and Motivation The electrostatic flexible film actuator, also known as an "Artificial Eyelid," is a unique MEMS (MicroElectronic Mechanical System) actuator fabricated from polyimide and thin metal films

122

Electrostatics in a Schwarzschild black hole pierced by a cosmic string  

E-Print Network [OSTI]

We explicitly determine the expression of the electrostatic potential generated by a point charge at rest in the Schwarzschild black hole pierced by a cosmic string. We can then calculate the electrostatic self-energy. From this, we find again the upper entropy bound for a charged object by employing thermodynamics of the black hole.

B. Linet

1999-04-19T23:59:59.000Z

123

Local and long-range electrostatic interactions in denatured Ribonuclease Sa: comparing the denatured protein with model peptides  

E-Print Network [OSTI]

H dependence of protein stability have highlighted substantial electrostatic structure in the denatured states of many proteins. To increase understanding of such electrostatic structure, unstructured pentapeptides have been used as models of the ionization...

Daily, Michael Douglas

2013-02-22T23:59:59.000Z

124

Wet electrostatic precipitator eliminates over 90% of previous emissions  

SciTech Connect (OSTI)

After ten years of searching for an effective air pollution control device, engineers at Teledyne Wah Chang Albany (TWCA) found that zirconium was the best metal in withstanding the gases generated in the manufacturing process of zirconium and hafnium. The best equipment was a two-stage, modular wet electrostatic precipitator to collect the submicron-size particulates in the form of metal oxides, ammonium sulfate, ammonium sulfite and ammonium bisulfite. All nonmetal components of the precipitator were fabricated entirely from industrial grade reinforced thermoset plastics. All metal components, including process water spray components, pipe fittings, and emitting electrodes - to be charged at 45,000 V - were fabricated from zirconium. Stack emission tests indicate the precipitator has eliminated over 90% of previous particulate emissions. Operation has been virtually maintenance free. The zirconium components show no signs of corrosion to date. (DP)

Not Available

1983-09-01T23:59:59.000Z

125

Normal matter storage of antiprotons  

SciTech Connect (OSTI)

Various simple issues connected with the possible storage of anti p in relative proximity to normal matter are discussed. Although equilibrium storage looks to be impossible, condensed matter systems are sufficiently rich and controllable that nonequilibrium storage is well worth pursuing. Experiments to elucidate the anti p interactions with normal matter are suggested. 32 refs.

Campbell, L.J.

1987-01-01T23:59:59.000Z

126

Neutrinoless Double Phys 135c Spring 2007  

E-Print Network [OSTI]

Neutrinoless Double Beta Decay Phys 135c Spring 2007 Michael Mendenhall #12;Theory Overview #12 beta decays #12;neutrinoless double beta decays n e- p beta decay e #12;neutrinoless double beta decays n e- p beta decay e n e- p n e- p double beta decay e e #12;neutrinoless double beta decays n e- p

Golwala, Sunil

127

Double acting bit holder  

DOE Patents [OSTI]

A double acting bit holder that permits bits held in it to be resharpened during cutting action to increase energy efficiency by reducing the amount of small chips produced. The holder consist of: a stationary base portion capable of being fixed to a cutter head of an excavation machine and having an integral extension therefrom with a bore hole therethrough to accommodate a pin shaft; a movable portion coextensive with the base having a pin shaft integrally extending therefrom that is insertable in the bore hole of the base member to permit the moveable portion to rotate about the axis of the pin shaft; a recess in the movable portion of the holder to accommodate a shank of a bit; and a biased spring disposed in adjoining openings in the base and moveable portions of the holder to permit the moveable portion to pivot around the pin shaft during cutting action of a bit fixed in a turret to allow front, mid and back positions of the bit during cutting to lessen creation of small chip amounts and resharpen the bit during excavation use.

Morrell, Roger J. (Blommington, MN); Larson, David A. (Minneapolis, MN); Ruzzi, Peter L. (Eagan, MN)

1994-01-01T23:59:59.000Z

128

Double Chooz: Latest results  

E-Print Network [OSTI]

The latest results from the Double Chooz experiment on the neutrino mixing angle $\\theta_{13}$ are presented. A detector located at an average distance of 1050 m from the two reactor cores of the Chooz nuclear power plant has accumulated a live time of 467.90 days, corresponding to an exposure of 66.5 GW-ton-year (reactor power $\\times$ detector mass $\\times$ live time). A revised analysis has boosted the signal efficiency and reduced the backgrounds and systematic uncertainties compared to previous publications, paving the way for the two detector phase. The measured $\\sin^2 2\\theta_{13} = 0.090^{+0.032}_{-0.029}$ is extracted from a fit to the energy spectrum. A deviation from the prediction above a visible energy of 4 MeV is found, being consistent with an unaccounted reactor flux effect, which does not affect the $\\theta_{13}$ result. A consistent value of $\\theta_{13}$ is measured in a rate-only fit to the number of observed candidates as a function of the reactor power, confirming the robustness of the result.

J. I. Crespo-Anadón; for the Double Chooz collaboration

2014-12-11T23:59:59.000Z

129

The self-consistent parallel electric field due to electrostatic ion-cyclotron turbulence in downward auroral-current regions of the Earth's magnetosphere. IV  

SciTech Connect (OSTI)

The physical processes that determine the self-consistent electric field (E{sub ||}) parallel to the magnetic field have been an unresolved problem in magnetospheric physics for over 40 years. Recently, a new multimoment fluid theory was developed for inhomogeneous, nonuniformly magnetized plasma in the guiding-center and gyrotropic approximation that includes the effect of electrostatic, turbulent, wave-particle interactions (see Jasperse et al. [Phys. Plasmas 13, 072903 (2006); ibid.13, 112902 (2006)]). In the present paper and its companion paper [Jasperse et al., Phys. Plasmas 17, 062903 (2010)], which are intended as sequels to the earlier work, a fundamental model for downward, magnetic field-aligned (Birkeland) currents for quasisteady conditions is presented. The model includes the production of electrostatic ion-cyclotron turbulence in the long-range potential region by an electron, bump-on-tail-driven ion-cyclotron instability. Anomalous momentum transfer (anomalous resistivity) by itself is found to produce a very small contribution to E{sub ||}; however, the presence of electrostatic, ion-cyclotron turbulence has a very large effect on the altitude dependence of the entire quasisteady solution. Anomalous energy transfer (anomalous heating and cooling) modifies the density, drift, and temperature altitude profiles and hence the generalized parallel-pressure gradients and mirror forces in the electron and ion momentum-balance equations. As a result, |E{sub ||}| is enhanced by nearly a factor of 40 compared to its value when turbulence is absent. The space-averaged potential increase associated with the strong double layer at the bottom of the downward-current sheet is estimated using the FAST satellite data and the multimoment fluid theory.

Jasperse, John R.; Basu, Bamandas [Air Force Research Laboratory, Space Vehicles Directorate, Hanscom AFB, Massachusetts 01731 (United States); Lund, Eric J. [Space Science Center, University of New Hampshire, Durham, New Hampshire 03824 (United States); Grossbard, Neil [Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts 02467 (United States)

2010-06-15T23:59:59.000Z

130

Double wall vacuum tubing and method of manufacture  

DOE Patents [OSTI]

An evacuated double wall tubing is shown together with a method for the manufacture of such tubing which includes providing a first pipe of predetermined larger diameter and a second pipe having an O.D. substantially smaller than the I.D. of the first pipe. An evacuation opening is then in the first pipe. The second pipe is inserted inside the first pipe with an annular space therebetween. The pipes are welded together at one end. A stretching tool is secured to the other end of the second pipe after welding. The second pipe is then prestressed mechanically with the stretching tool an amount sufficient to prevent substantial buckling of the second pipe under normal operating conditions of the double wall pipe. The other ends of the first pipe and the prestressed second pipe are welded together, preferably by explosion welding, without the introduction of mechanical spacers between the pipes. The annulus between the pipes is evacuated through the evacuation opening, and the evacuation opening is finally sealed. The first pipe is preferably of steel and the second pipe is preferably of titanium. The pipes may be of a size and wall thickness sufficient for the double wall pipe to be structurally load bearing or may be of a size and wall thickness insufficient for the double wall pipe to be structurally load bearing, and the double wall pipe positioned with a sliding fit inside a third pipe of a load-bearing size.

Stahl, Charles R. (Scotia, NY); Gibson, Michael A. (Houston, TX); Knudsen, Christian W. (Houston, TX)

1989-01-01T23:59:59.000Z

131

Eulerian simulations of collisional effects on electrostatic plasma waves  

SciTech Connect (OSTI)

The problem of collisions in a plasma is a wide subject with a huge historical literature. In fact, the description of realistic plasmas is a tough problem to attack, both from the theoretical and the numerical point of view. In this paper, a Eulerian time-splitting algorithm for the study of the propagation of electrostatic waves in collisional plasmas is presented. Collisions are modeled through one-dimensional operators of the Fokker-Planck type, both in linear and nonlinear forms. The accuracy of the numerical code is discussed by comparing the numerical results to the analytical predictions obtained in some limit cases when trying to evaluate the effects of collisions in the phenomenon of wave plasma echo and collisional dissipation of Bernstein-Greene-Kruskal waves. Particular attention is devoted to the study of the nonlinear Dougherty collisional operator, recently used to describe the collisional dissipation of electron plasma waves in a pure electron plasma column [M. W. Anderson and T. M. O'Neil, Phys. Plasmas 14, 112110 (2007)]. Finally, for the study of collisional plasmas, a recipe to set the simulation parameters in order to prevent the filamentation problem can be provided, by exploiting the property of velocity diffusion operators to smooth out small velocity scales.

Pezzi, Oreste; Valentini, Francesco; Perrone, Denise; Veltri, Pierluigi [Dipartimento di Fisica and CNISM, Università della Calabria, 87036 Rende (CS) (Italy)] [Dipartimento di Fisica and CNISM, Università della Calabria, 87036 Rende (CS) (Italy)

2013-09-15T23:59:59.000Z

132

Electrostatic coalescence system with independent AC and DC hydrophilic electrodes  

DOE Patents [OSTI]

An improved electrostatic coalescence system is provided in which independent AC and DC hydrophilic electrodes are employed to provide more complete dehydration of an oil emulsion. The AC field is produced between an AC electrode array and the water-oil interface wherein the AC electrode array is positioned parallel to the interface which acts as a grounded electrode. The emulsion is introduced into the AC field in an evenly distributed manner at the interface. The AC field promotes drop-drop and drop-interface coalescence of the water phase in the entering emulsion. The continuous oil phase passes upward through the perforated AC electrode array and enters a strong DC field produced between closely spaced DC electrodes in which small dispersed droplets of water entrained in the continuous phase are removed primarily by collection at hydrophilic DC electrodes. Large droplets of water collected by the electrodes migrate downward through the AC electrode array to the interface. All phase separation mechanisms are utilized to accomplish more complete phase separation.

Hovarongkura, A. David (Arlington, VA); Henry, Jr., Joseph D. (Morgantown, WV)

1981-01-01T23:59:59.000Z

133

Neutrinoless Double Beta-Decay  

E-Print Network [OSTI]

The neutrinoless double $\\beta$-decay of nuclei is reviewed. We discuss neutrino mixing and 3x3 PMNS neutrino mixing matrix. Basic theory of neutrinoless double $\\beta$-decay is presented in some details. Results of different calculations of nuclear matrix element are discussed. Experimental situation is considered. The Appendix is dedicated to E. Majorana (brief biography and his paper in which the theory of Majorana particles is given)

S. M. Bilenky

2010-01-12T23:59:59.000Z

134

Optics elements for modeling electrostatic lenses and accelerator components II. Acceleration columns  

SciTech Connect (OSTI)

A set of optical models for a variety of electrostatic lenses and accelerator columns has been developed for the computer code TRACE 3-D. TRACE 3-D is an envelope (matrix) code including space charge that is often used to model bunched beams in magnetic transport systems and radiofrequency (RF) accelerators when the effects of beam current may be important. Several new matrix models have been developed that allow the code to be used for modeling beam lines and accelerators with electrostatic components. The new models include a number of options for: (1) einzel lenses, (2) accelerator columns, (3) electrostatic deflectors (prisms), and (4) an electrostatic quadrupole. A prescription for setting up the initial beam appropriate to modeling 2-D (continuous) beams has also been developed. The new models for (2) are described in this paper, selected comparisons with other calculations are presented, and a beamline application is summarized.

Gillespie, G.H., Brown, T.A.

1998-05-01T23:59:59.000Z

135

Effect of functionalization on the electrostatic charging, tunneling, and Raman spectroscopy of epitaxial graphene  

E-Print Network [OSTI]

graphene Appl. Phys. Lett. 101, 111602 (2012); 10.1063/1.4752443 Evidences of electrochemical graphene a marked effect on the homogeneity of the electrostatic charge and leads to an increase of the energy

136

Applications of an electrostatic high-voltage tether to radiation belt remediation  

E-Print Network [OSTI]

A computational algorithm is developed and executed to calculate the rate of depletion of magnetospheric ions by an electrostatic tether at various altitudes. This computation relies upon past studies in the OML regime of ...

Zeineh, Christopher F

2007-01-01T23:59:59.000Z

137

Electrostatic Self-Assembly of Pt-around-Au Nanocomposite with...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Self-Assembly of Pt-around-Au Nanocomposite with High Activity towards Formic Acid Oxidation. Electrostatic Self-Assembly of Pt-around-Au Nanocomposite with High Activity towards...

138

Design of a hermetically sealed MEMS resonator with electrostatic actuation and capacitive third harmonic sensing  

E-Print Network [OSTI]

A microscale beam resonator has been designed and fabricated for use as a modular pressure sensor for vacuum applications. The device dimensions have been optimized to provide measurable signals with low noise. Electrostatic ...

Newton, Eric B

2012-01-01T23:59:59.000Z

139

Energy issues for construction of electrostatic nano-traps in saline  

E-Print Network [OSTI]

To trap and manipulate nano-sized particles with electrostatic force is an interesting issue for nanoscience and bioscience, yet remains as a technical challenge to date. We present here numerical calculations for the feasibility of trapping a nano-particle with another nano-sized structure in an ionic fluid. The roles of electrostatic energy, entropy and free energy in interplays of these systems have been calculated. We find that in some cases the entropic term contributes more to the total amount of free energy than the electrostatic energy does. We have also discussed the probability for aggregation of two nano-subjects with similar structure but different charge distributions. Although the structures and charge distributions are artificially assumed, the result should be valid for general cases; it provides guiding clues for construction of nanoscale electrostatic tweezers, and may help for a better understand of the interplays among a variety of bio-macromolecules.

Jingkun Guo; Zijin Lei; Shengyong Xu

2015-01-09T23:59:59.000Z

140

Electrostatic microvalves utilizing conductive nanoparticles for improved speed, lower power, and higher force actuation.  

SciTech Connect (OSTI)

We have designed and built electrostatically actuated microvalves compatible with integration into a PDMS based microfluidic system. The key innovation for electrostatic actuation was the incorporation of carbon nanotubes into the PDMS valve membrane, allowing for electrostatic charging of the PDMS layer and subsequent discharging, while still allowing for significant distention of the valveseat for low voltage control of the system. Nanoparticles were applied to semi-cured PDMS using a stamp transfer method, and then cured fully to make the valve seats. DC actuation in air of these valves yielded operational voltages as low as 15V, by using a supporting structure above the valve seat that allowed sufficient restoring forces to be applied while not enhancing actuation forces to raise the valve actuation potential. Both actuate to open and actuate to close valves have been demonstrated, and integrated into a microfluidic platform, and demonstrated fluidic control using electrostatic valves.

Ten Eyck, Gregory A.; Branson, Eric D.; Kenis, Paul J. A. (University of Illinois, Champaign Urbana); Desai, Amit (University of Illinois, Champaign Urbana); Schudel, Ben (University of Illinois, Champaign Urbana); Givler, Richard C.; Tice, Josh (University of Illinois, Champaign Urbana); Collord, Andrew; Apblett, Christopher Alan; Cook, Adam W.

2009-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

An innovative accelerator-driven inertial electrostatic confinement device using converging ion beams  

SciTech Connect (OSTI)

Fundamental physics issues facing development of fusion power on a small-scale are assessed with emphasis on the idea of Inertial Electrostatic Confinement (IEC). The authors propose a new concept of accelerator-driven IEC fusion, termed Converging Beam Inertial Electrostatic Confinement (CB-IEC). CB-IEC offers a number of innovative features that make it an attractive pathway toward resolving fundamental physics issues and assessing the ultimate viability of the IEC concept for power generation.

Bauer, T. H.; Wigeland, R. A.

1999-12-08T23:59:59.000Z

142

Study of electrostatic charge generation and antistatic additive effects in used transformer oil  

E-Print Network [OSTI]

STUDY OF ELECTROSTATIC CHARGE GENERATION AND ANTISTATIC ADDITIVE EFFECTS IN USED TRANSFORMER OIL A Thesis by FERNANDO RANGEL CLAVIJO Submitted to the Office of Graduate Studies of Texas A8tM University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE December 1992 Major Subject: Safety Engineering STUDY OF ELECTROSTATIC CHARGE GENERATION AND ANTISTATIC ADDITIVE EFFECTS IN USED TRANSFORMER OIL A Thesis by FERNANDO RANGEL CLAVIJO Approved as to style...

Rangel Clavijo, Fernando

1992-01-01T23:59:59.000Z

143

On the potential energy in an electrostatically bound two-body system  

E-Print Network [OSTI]

The potential energy problem in an electrostatically bound two-body system is studied in the framework of a recently proposed impact model of the electrostatic force and in analogy to the potential energy in a gravitationally bound system. The physical processes are described that result in the variation of the potential energy as a function of the distance between the charged bodies. The energy is extracted from distributions of hypothetical interaction entities modified by the charged bodies.

K. Wilhelm; B. N. Dwivedi

2014-08-30T23:59:59.000Z

144

On the potential energy in an electrostatically bound two-body system  

E-Print Network [OSTI]

The potential energy problem in an electrostatically bound two-body system is studied in the framework of a recently proposed impact model of the electrostatic force and in analogy to the potential energy in a gravitationally bound system. The physical processes are described that result in the variation of the potential energy as a function of the distance between the charged bodies. The energy is extracted from distributions of hypothetical interaction entities modified by the charged bodies.

Wilhelm, K

2015-01-01T23:59:59.000Z

145

The quest for neutrinoless double beta decay: Pseudo-Dirac, Majorana and sterile neutrinos  

E-Print Network [OSTI]

In this paper we analyze the neutrinoless double beta decay predictions in some scenarios with admixture of pseudo-Dirac and Majorana neutrinos in the 3 and 3+1 neutrino frameworks. We found that some of the cases can be falsifiable in near-term and future generations of neutrinoless double beta decay experiments even for the normal neutrino mass hierarchy. In the 3+1 framework we consider the sterile neutrino with a mass of the order of 1 eV. The complementarity between cosmological constraints and the future sensitivity for the next generations of the neutrinoless double beta decay searches is exploited.

A. Meroni; E. Peinado

2014-11-09T23:59:59.000Z

146

The quest for neutrinoless double beta decay: Pseudo-Dirac, Majorana and sterile neutrinos  

E-Print Network [OSTI]

In this paper we analyze the neutrinoless double beta decay predictions in some scenarios with admixture of pseudo-Dirac and Majorana neutrinos in the 3 and 3+1 neutrino frameworks. We found that some of the cases can be falsifiable in near-term and future generations of neutrinoless double beta decay experiments even for the normal neutrino mass hierarchy. In the 3+1 framework we consider the sterile neutrino with a mass of the order of 1 eV. The complementarity between cosmological constraints and the future sensitivity for the next generations of the neutrinoless double beta decay searches is exploited.

Meroni, A

2014-01-01T23:59:59.000Z

147

Normalized cDNA libraries  

DOE Patents [OSTI]

This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3' noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to moderate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library.

Soares, Marcelo B. (New York, NY); Efstratiadis, Argiris (Englewood, NJ)

1997-01-01T23:59:59.000Z

148

Normalized cDNA libraries  

DOE Patents [OSTI]

This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3{prime} noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to moderate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library. 4 figs.

Soares, M.B.; Efstratiadis, A.

1997-06-10T23:59:59.000Z

149

IMPORTANCE OF NEUTRINOLESS DOUBLE BETA DECAY Abstract  

E-Print Network [OSTI]

number violation in nature and what is its magnitude. The neutrinoless double beta decay experiment can

U. Sarkar; Utpal Sarkar

150

COMMENTS ON THE SEARCH FOR ELECTROSTATIC DISCHARGES ON MARS  

SciTech Connect (OSTI)

Ruf et al. used the Deep Space Network (DSN) to search for the emission of non-thermal radiation by martian dust storms, theoretically predicted by Renno et al. They detected the emission of non-thermal radiation that they were searching for, but were surprised that it contained spectral peaks suggesting modulation at various frequencies and their harmonics. Ruf et al. hypothesized that the emission of non-thermal radiation was caused by electric discharges in a deep convective dust storm, modulated by Schumann resonances (SRs). Anderson et al. used the Allen Telescope Array (ATA) to search for similar emissions. They stated that they found only radio frequency interference (RFI) during their search for non-thermal emission by martian dust storms and implicitly suggested that the signal detected by Ruf et al. was also RFI. However, their search was not conducted during the dust storm season when deep convective storms are most likely to occur. Here, we show that the ubiquitous dust devils and small-scale dust storms that were instead likely present during their observations are too shallow to excite SRs and produce the signals detected by Ruf et al. We also show that the spectral and temporal behavior of the signals detected by Anderson et al. corroborates the idea that they originated from man-made pulse-modulated telecommunication signals rather than martian electric discharges. In contrast, an identical presentation of the signals detected by Ruf et al. demonstrates that they do not resemble man-made signals. The presentation indicates that the DSN signals were consistent with modulation by martian SRs, as originally hypothesized by Ruf et al. We propose that a more comprehensive search for electrostatic discharges be conducted with either the ATA or DSN during a future martian dust storm season to test the hypothesis proposed by Ruf et al.

Renno, Nilton O.; Ruf, Christopher S., E-mail: renno@alum.mit.edu [Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI (United States)

2012-12-20T23:59:59.000Z

151

Double-sided electromagnetic pump with controllable normal force for rapid solidification of liquid metals  

DOE Patents [OSTI]

A system for casting liquid metals is provided with an electromagnetic pump which includes a pair of primary blocks each having a polyphase winding and being positioned to form a gap through which a movable conductive heat sink passes. A solidifying liquid metal sheet is deposited on the heat sink and the heat sink and sheet are held in compression by forces produced as a result of current flow through the polyphase windings. Shaded-pole interaction between the primary windings, heat sink and solidifying strip produce transverse forces which act to center the strip on the heat sink. 5 figs.

Kuznetsov, S.B.

1987-01-13T23:59:59.000Z

152

Double-sided electromagnetic pump with controllable normal force for rapid solidification of liquid metals  

DOE Patents [OSTI]

A system for casting liquid metals is provided with an electromagnetic pump which includes a pair of primary blocks each having a polyphase winding and being positioned to form a gap through which a movable conductive heat sink passes. A solidifying liquid metal sheet is deposited on the heat sink and the heat sink and sheet are held in compression by forces produced as a result of current flow through the polyphase windings. Shaded-pole interaction between the primary windings, heat sink and solidifying strip produce transverse forces which act to center the strip on the heat sink.

Kuznetsov, Stephen B. (Pittsburgh, PA)

1987-01-01T23:59:59.000Z

153

Neutrinoless Double Beta Decay Constraints  

E-Print Network [OSTI]

A brief overview is given of theoretical analyses with neutrinoless double beta decay experiments. Theoretical bounds on the ``observable'', _betabeta, are presented. By using experimental bounds on _betabeta, allowed regions are obtained on the m_l-cos{2theta_12} plane, where m_l stands for the lightest neutrino mass. It is shown that Majorana neutrinos can be excluded by combining possible results of future neutrinoless double beta decay and {}^3H beta decay experiments. A possibility to constrain one of two Majorana phases is discussed also.

Hiroaki Sugiyama

2003-07-25T23:59:59.000Z

154

Introduction to Double Beta Decay  

SciTech Connect (OSTI)

While the neutrino oscillation experiments have measured non-zero square mass differences between neutrino flavors, the double beta decay is the most sensitive process to the absolute mass of the neutrinos and the only that can distinguish whether neutrino is a Dirac or a Majorana particle. These are a few but not the only reasons that many efforts, both theoretically and experimentally, are dedicated to the study of this process. In this lecture I'll give a short introduction to the double beta decay process. Different decay modes and mechanisms, a short history, decay rates and extraction of the neutrino mass parameter are presented.

Stoica, Sabin [Horia Hulubei National Institute for Physics and Nuclear Engineering, P.O. Box MG-6, 077125 Magurele (Romania); Horia Hulubei Foundation, 407, Atomistilor street, 077125 Magurele (Romania)

2010-11-24T23:59:59.000Z

155

Double beta decay: present status  

E-Print Network [OSTI]

The present status of double beta decay experiments (including the search for $2\\beta^{+}$, EC$\\beta^{+}$ and ECEC processes) are reviewed. The results of the most sensitive experiments are discussed. Average and recommended half-life values for two-neutrino double beta decay are presented. Conservative upper limits on effective Majorana neutrino mass and the coupling constant of the Majoron to the neutrino are established as $ beta decay experiments with a sensitivity for the $$ at the level of (0.01-0.1) eV are considered.

A. S. Barabash

2008-07-18T23:59:59.000Z

156

Attosecond Double-Slit Experiment  

SciTech Connect (OSTI)

A new scheme for a double-slit experiment in the time domain is presented. Phase-stabilized few-cycle laser pulses open one to two windows (slits) of attosecond duration for photoionization. Fringes in the angle-resolved energy spectrum of varying visibility depending on the degree of which-way information are measured. A situation in which one and the same electron encounters a single and a double slit at the same time is observed. The investigation of the fringes makes possible interferometry on the attosecond time scale. From the number of visible fringes, for example, one derives that the slits are extended over about 500 as.

Lindner, F.; Schaetzel, M.G.; Baltuska, A.; Goulielmakis, E. [Max-Planck-Institut fuer Quantenoptik, 85748 Garching (Germany); Walther, H. [Max-Planck-Institut fuer Quantenoptik, 85748 Garching (Germany); Ludwig-Maximilians-Universitaet Muenchen, 85748 Garching (Germany); Krausz, F. [Max-Planck-Institut fuer Quantenoptik, 85748 Garching (Germany); Ludwig-Maximilians-Universitaet Muenchen, 85748 Garching (Germany); Institut fuer Photonik, Technische Universitaet Wien, Gusshausstr. 27, A-1040 Vienna (Austria); Milosevic, D.B. [Faculty of Science, University of Sarajevo, Zmaja od Bosne 35, 71000 Sarajevo (Bosnia and Herzegowina); Bauer, D. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Becker, W. [Max-Born-Institut, Max-Born-Str. 2a, 12489 Berlin (Germany); Paulus, G.G. [Max-Planck-Institut fuer Quantenoptik, 85748 Garching (Germany); Ludwig-Maximilians-Universitaet Muenchen, 85748 Garching (Germany); Department of Physics, Texas A and M University, College Station, Texas 77843-4242 (United States)

2005-07-22T23:59:59.000Z

157

Neutrinoless double beta decay experiments  

E-Print Network [OSTI]

The study of neutrinoless double beta decay is of outmost importance for neutrino physics. It is considered to be the gold plated channel to probe the fundamental character of neutrinos and to determine the neutrino mass. From the experimental point about nine different isotopes are explored for the search. After a general introduction follows a short discussion on nuclear matrix element calculations and supportive measurements. The current experimental status of double beta searches is presented followed by a short discussion of the ideas and proposals for large scale experiments.

K. Zuber

2006-10-04T23:59:59.000Z

158

Double stranded nucleic acid biochips  

DOE Patents [OSTI]

This invention describes a new method of constructing double-stranded DNA (dsDNA) microarrays based on the use of pre-synthesized or natural DNA duplexes without a stem-loop structure. The complementary oligonucleotide chains are bonded together by a novel connector that includes a linker for immobilization on a matrix. A non-enzymatic method for synthesizing double-stranded nucleic acids with this novel connector enables the construction of inexpensive and robust dsDNA/dsRNA microarrays. DNA-DNA and DNA-protein interactions are investigated using the microarrays.

Chernov, Boris; Golova, Julia

2006-05-23T23:59:59.000Z

159

A New Electrostatically-focused UV HPD for Liquid Xenon  

SciTech Connect (OSTI)

Appropriate photodetectors are a major challenge for liquid xenon technology as proposed by the next generation of double beta decay, solar neutrino, and dark matter searches. The primary photon signal is tiny and in the hard ultraviolet, the installation is cryogenic, and the sensors themselves must not introduce background. Hybrid photodiodes (HPDs) provide an easy substitute for a conventional PMT with the added advantages of low radioactivity, better area coverage, and single photoelectron counting. A computer-controlled test setup capable of characterizing optical properties of ultraviolet photodetectors was installed. It was used to compare photomultiplier tubes, silicon photomultipliers, avalanche photodiodes, and a novel-design custom HPD developed by the DEP company under this proposal.

Cushman, Priscilla Brooks [University of Minnesota

2013-07-10T23:59:59.000Z

160

No electrostatic supersolitons in two-component plasmas  

SciTech Connect (OSTI)

The concept of acoustic supersolitons was introduced for a very specific plasma with five constituents, and discussed only for a single set of plasma parameters. Supersolitons are characterized by having subsidiary extrema on the sides of a typical bipolar electric field signature, or by association with a root beyond double layers in the fully nonlinear Sagdeev pseudopotential description. It was subsequently found that supersolitons could exist in several plasma models having three constituent species, rather than four or five. In the present paper, it is proved that standard two-component plasma models cannot generate supersolitons, by recalling and extending results already in the literature, and by establishing the necessary properties of a more recent model.

Verheest, Frank, E-mail: frank.verheest@ugent.be [Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B–9000 Gent (Belgium); School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Lakhina, Gurbax S., E-mail: lakhina@iigm.iigs.res.in [Indian Institute of Geomagnetism, New Panvel (W), Navi Mumbai (India); Hellberg, Manfred A., E-mail: hellberg@ukzn.ac.za [School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa)

2014-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Nitrogen oxides removal by pulsed corona enhanced wet electrostatics precipitation  

SciTech Connect (OSTI)

This paper presents the results of a bench-scale pulsed-corona enhanced wet electrostatic precipitator (wESP) application for removal of nitrogen oxides. This wESP is designed to operate wet/dry, positive/negative, and pulsed/non-pulsed conditions. The applied pulsed voltage is varied from 0 to 60 kV at 70 Hz. Gas flow rate is a nominal 7 m{sup 3}/hr and the collecting electrode area is 0.20 m{sup 2}. A simulated flue gas with NO concentration up to 1,200 ppm{sub v} has been used to determine the feasibility of NO{sub x} removal in the wESP. NO has to be oxidized to N{sub 2} before any removal takes place. NO{sub x} removal efficiency increased with gas residence time, inlet NO concentration and applied corona power. In the air stream with 10 seconds gas residence time, up to 20% of 1,000 ppm NO (or 22% NO{sub x}) was removed from an air stream of 1.9x10{sup {minus}3} m{sup 3}/s with a water flow of 6.3 x 10{sup {minus}5} m{sup 3}/sec and 20 W, 70 Hz pulsed corona. Both ammonia and ozone injections improve the NO{sub x} removal for both the corona and non-corona cases. With the inclusion of NH{sub 3} (NH{sub 3}/NO{sub x} ratio 1.3) and 25 watts corona power, NO removal efficiency was increased from 28% to 57%. The amount of in-situ ozone is not enough to be considered as a major NO{sub x} removal mechanism in this wESP. However, the additional injection of ozone improves the NO removal from 29% to 38% for both the corona and non-corona cases. When the oxygen concentration is dropped to 3% in a simulated flue gas with 12% CO{sub 2} and 800 ppm NO and 70% relative humidity at 11.5 s of gas residence time, the removal efficiency of NO is only 5%. Adding NH{sub 3} (NH{sub 3}/NO{sub x} ratio 1) at 76 watts corona power, NO removal is increased to 13%.

Tseng, C.H.; Keener, T.C.; Khang, S.J.

1999-07-01T23:59:59.000Z

162

Complementarity of Neutrinoless Double Beta Decay and Cosmology  

E-Print Network [OSTI]

Neutrinoless double beta decay experiments constrain one combination of neutrino parameters, while cosmic surveys constrain another. This complementarity opens up an exciting range of possibilities. If neutrinos are Majorana particles, and the neutrino masses follow an inverted hierarchy, then the upcoming sets of both experiments will detect signals. The combined constraints will pin down not only the neutrino masses but also constrain one of the Majorana phases. If the hierarchy is normal, then a beta decay detection with the upcoming generation of experiments is unlikely, but cosmic surveys could constrain the sum of the masses to be relatively heavy, thereby producing a lower bound for the neutrinoless double beta decay rate, and therefore an argument for a next generation beta decay experiment. In this case as well, a combination of the phases will be constrained.

Scott Dodelson; Joseph Lykken

2014-03-20T23:59:59.000Z

163

Complementarity of Neutrinoless Double Beta Decay and Cosmology  

E-Print Network [OSTI]

Neutrinoless double beta decay experiments constrain one combination of neutrino parameters, while cosmic surveys constrain another. This complementarity opens up an exciting range of possibilities. If neutrinos are Majorana particles, and the neutrino masses follow an inverted hierarchy, then the upcoming sets of both experiments will detect signals. The combined constraints will pin down not only the neutrino masses but also constrain one of the Majorana phases. If the hierarchy is normal, then a beta decay detection with the upcoming generation of experiments is unlikely, but cosmic surveys could constrain the sum of the masses to be relatively heavy, thereby producing a lower bound for the neutrinoless double beta decay rate, and therefore an argument for a next generation beta decay experiment. In this case as well, a combination of the phases will be constrained.

Dodelson, Scott

2014-01-01T23:59:59.000Z

164

Neutrinoless double {beta}-decay and neutrino mass hierarchies  

SciTech Connect (OSTI)

In the framework of the seesaw mechanism the normal hierarchy is favorable for the neutrino mass spectrum. For this spectrum we present a detailed calculation of the half-lives of neutrinoless double {beta}-decay for several nuclei of experimental interest. The half-lives are evaluated by considering the most comprehensive nuclear matrix elements, which were obtained within the renormalized quasiparticle random phase approximation by the Bratislava-Caltech-Tuebingen group. The dependence of the half-lives on sin{sup 2}{theta}{sub 13} and the lightest neutrino mass is studied. We present also the results of the calculations of the half-lives of neutrinoless double {beta}-decay in the case of the inverted hierarchy of neutrino masses.

Bilenky, S. M. [Scuola Internazionale Superiore di Studi Avanzati, I-34014 Trieste (Italy); Faessler, Amand; Gutsche, Thomas; Simkovic, Fedor [Institute fuer Theoretische Physik der Universitaet Tuebingen, D-72076 Tuebingen (Germany)

2005-09-01T23:59:59.000Z

165

Constraining neutrinoless double beta decay  

E-Print Network [OSTI]

A class of discrete flavor-symmetry-based models predicts constrained neutrino mass matrix schemes that lead to specific neutrino mass sum-rules (MSR). We show how these theories may constrain the absolute scale of neutrino mass, leading in most of the cases to a lower bound on the neutrinoless double beta decay effective amplitude.

L. Dorame; D. Meloni; S. Morisi; E. Peinado; J. W. F. Valle

2011-11-23T23:59:59.000Z

166

Electrostatic beneficiation of coal. Quarterly technical progress report, January 1, 1994--March 31, 1994  

SciTech Connect (OSTI)

Electrostatic beneficiation of dry coal has received significant attention in the last decade. In this process the coal is ground and then charged, either by corona charging or by triboelectrification (friction charging). Coal and minerals receive different levels of charge -- often opposite polarities in the case of triboelectrification -- and can then be separated based on differences in electrical mobility. Problems associated with the techniques include rapid deposition of particles on the electrodes, thus, effecting further separation. The goal of this project is to optimize the electrostatic coal cleaning process to remove pyrites and inorganic materials through studies of the electrostatic properties of powdered coal, in-situ measurements of the electrodynamics of coal and mineral particles inside the separator, and development of self-cleaning collector plates for continuous separation.

Mazumder, M.K.

1994-04-28T23:59:59.000Z

167

Cascaded target normal sheath acceleration  

SciTech Connect (OSTI)

A cascaded target normal sheath acceleration (TNSA) scheme is proposed to simultaneously increase energy and improve energy spread of a laser-produced mono-energetic proton beam. An optimum condition that uses the maximum sheath field to accelerate the center of the proton beam is theoretically found and verified by two-dimensional particle-in-cell simulations. An initial 10 MeV proton beam is accelerated to 21 MeV with energy spread decreased from 5% to 2% under the optimum condition during the process of the cascaded TNSA. The scheme opens a way to scale proton energy lineally with laser energy.

Wang, W. P.; Shen, B. F.; Zhang, X. M.; Wang, X. F.; Xu, J. C.; Zhao, X. Y.; Yu, Y. H.; Yi, L. Q.; Shi, Y.; Zhang, L. G.; Xu, T. J.; Xu, Z. Z. [State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)] [State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800 (China)

2013-11-15T23:59:59.000Z

168

A Search for Neutrinoless Double Beta Decay of Te-130  

E-Print Network [OSTI]

far unobserved, neutrinoless double beta decay is a possibleright for the neutrinoless double beta decay of 130 Te. Thisprocess, with neutrinoless double beta decay being the most

Bryant, Adam Douglas

2010-01-01T23:59:59.000Z

169

What can we learn from neutrinoless double beta decay experiments?  

E-Print Network [OSTI]

Limits From Neutrinoless Double-Beta Decay (Rev. ),” ina next generation neutrinoless double beta decay search andPARTICLES? NO NEUTRINOLESS DOUBLE BETA DECAY AND INVERTED

Bahcall, John N.

2009-01-01T23:59:59.000Z

170

NEUTRINOLESS DOUBLE BETA DECAY AND ITS “INVERSE”  

E-Print Network [OSTI]

subsequently published arguments, non-observation of neutrinoless double beta decay has, to date, no bearing on

Clemens A. Heusch; Peter Minkowski

1996-01-01T23:59:59.000Z

171

Neutrinoless Double Beta Decay and CP Violation  

E-Print Network [OSTI]

neutrinoless double beta decay in the case of two neutrino generations (or when the third generation leptons do

Patrick J. O’donnell; Utpal Sarkar

1993-01-01T23:59:59.000Z

172

nuMSM--Predictions for Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

We give the prediction on the effective Majorana mass for neutrinoless double $\\beta$ decay in a simple extension of the Standard Model (nuMSM). The model adds three right-handed neutrinos with masses smaller than the electroweak scale, and explains dark matter of the Universe. This leads to constraints 1.3meVnormal neutrino mass hierarchy and 13meV

F. Bezrukov

2005-05-30T23:59:59.000Z

173

Vanishing Effective Mass of the Neutrinoless Double Beta Decay?  

E-Print Network [OSTI]

We stress that massive neutrinos may be Majorana particles even if the effective mass of the neutrinoless double beta decay m_ee vanishes. We show that current neutrino oscillation data do allow m_ee = 0 to hold, if the Majorana CP-violating phases lie in two specific regions. Strong constraints on three neutrino masses can then be obtained. We find that the neutrino mass spectrum performs a normal hierarchy: m_1 < m_2 < m_3. A possible texture of the neutrino mass matrix is also illustrated under the m_ee = 0 condition.

Zhi-zhong Xing

2003-07-18T23:59:59.000Z

174

Neutrinoless Double Beta Decay Experiments  

E-Print Network [OSTI]

Neutrinoless double beta decay is the only process known so far able to test the neutrino intrinsic nature: its experimental observation would imply that the lepton number is violated by two units and prove that neutrinos have a Majorana mass components, being their own anti-particle. While several experiments searching for such a rare decay have been performed in the past, a new generation of experiments using different isotopes and techniques have recently released their results or are taking data and will provide new limits, should no signal be observed, in the next few years to come. The present contribution reviews the latest public results on double beta decay searches and gives an overview on the expected sensitivities of the experiments in construction which will be able to set stronger limits in the near future.

Alberto Garfagnini

2014-08-11T23:59:59.000Z

175

Neutrinoless Double Beta Decay Experiments  

E-Print Network [OSTI]

Neutrinoless double beta decay is the only process known so far able to test the neutrino intrinsic nature: its experimental observation would imply that the lepton number is violated by two units and prove that neutrinos have a Majorana mass components, being their own anti-particle. While several experiments searching for such a rare decay have been performed in the past, a new generation of experiments using different isotopes and techniques have recently released their results or are taking data and will provide new limits, should no signal be observed, in the next few years to come. The present contribution reviews the latest public results on double beta decay searches and gives an overview on the expected sensitivities of the experiments in construction which will be able to set stronger limits in the near future.

Garfagnini, Alberto

2014-01-01T23:59:59.000Z

176

Comparison of organic combustion products in fly ash collected by a venturi wet scrubber and an electrostatic precipitator at a coal-fired power station  

SciTech Connect (OSTI)

Organic compounds recovered from fly ash collected by an electrostatic precipitator (ESP) and a venturi wet scrubber (WS) at a coal-fired power station were analysed. Organic constituents in extracts of solid waste included large numbers of aliphatic and aromatic compounds. A series of normal C/sub 15/-C/sub 30/ paraffins was found in the aliphatic fractions. The aromatic compounds were of 1,2,3 and 4 rings. Polynuclear aromatic hydrocarbons containing more than 4 rings were shown to be poorly recovered. Comparison of organic constituents in extracts of fly ash from the WS and the ESP showed that ESP extracts contained more compounds in greater quantities. The types and quantities of organic compounds recovered are not expected to present any environmental hazard.

Harrison, F.L.

1985-02-01T23:59:59.000Z

177

EUROTeV-Memo-2007-003 Power loss estimation in the Electrostatic Separators of the ILC  

E-Print Network [OSTI]

EUROTeV-Memo-2007-003 - 1 - Power loss estimation in the Electrostatic Separators of the ILC presents the power loss estimation in the Electrostatic Separators of the ILC alternative head-on scheme-003 - 2 - Computation The computation of the power losses has been realized using DIMAD software

Boyer, Edmond

178

Laboratory Measurements of Electrostatic Solitary Structures Generated by Beam Injection Bertrand Lefebvre,1,* Li-Jen Chen,1  

E-Print Network [OSTI]

Laboratory Measurements of Electrostatic Solitary Structures Generated by Beam Injection Bertrand February 2010; published 7 September 2010) Electrostatic solitary structures are generated by injection-widths 4 to 25De and velocities 1 to 3 times the background electron thermal speed. Nonlinear wave packets

California at Los Angles, University of

179

Ionic Asymmetry and Solvent Excluded Volume Effects on Spherical Electric Double Layers: A Density Functional Approach  

SciTech Connect (OSTI)

In this article we present a classical density functional theory for electrical double layers of spherical macroions that extends the capabilities of conventional approaches by accounting for electrostatic ion correlations, size asymmetry and excluded volume effects. The approach is based on a recent approximation introduced by Hansen-Goos and Roth for the hard sphere excess free energy of inhomogeneous fluids (J. Chem. Phys. 124, 154506). It accounts for the proper and efficient description of the effects of ionic asymmetry and solvent excluded volume, especially at high ion concentrations and size asymmetry ratios including those observed in experimental studies. Additionally, we utilize a leading functional Taylor expansion approximation of the ion density profiles. In addition, we use the Mean Spherical Approximation for multi-component charged hard sphere fluids to account for the electrostatic ion correlation effects. These approximations are implemented in our theoretical formulation into a suitable decomposition of the excess free energy which plays a key role in capturing the complex interplay between charge correlations and excluded volume effects. We perform Monte Carlo simulations in various scenarios to validate the proposed approach, obtaining a good compromise between accuracy and computational cost. We use the proposed computational approach to study the effects of ion size, ion size asymmetry and solvent excluded volume on the ion profiles, integrated charge, mean electrostatic potential, and ionic coordination number around spherical macroions in various electrolyte mixtures. Our results show that both solvent hard sphere diameter and density play a dominant role in the distribution of ions around spherical macroions, mainly for experimental water molarity and size values where the counterion distribution is characterized by a tight binding to the macroion, similar to that predicted by the Stern model.

Medasani, Bharat; Ovanesyan, Zaven; Thomas, Dennis G.; Sushko, Maria L.; Marucho, Marcelo

2014-05-29T23:59:59.000Z

180

Pair extended coupled cluster doubles  

E-Print Network [OSTI]

The accurate and efficient description of strongly correlated systems remains an important challenge for computational methods. Doubly occupied configuration interaction (DOCI), in which all electrons are paired and no correlations which break these pairs are permitted, can in many cases provide an accurate account of strong correlations, albeit at combinatorial computational cost. Recently, there has been significant interest in a method we refer to as pair coupled cluster doubles (pCCD), a variant of coupled cluster doubles in which the electrons are paired. This is simply because pCCD provides energies nearly identical to those of DOCI, but at mean-field computational cost (disregarding the cost of the two-electron integral transformation). Here, we introduce the more complete pair extended coupled cluster doubles (pECCD) approach which, like pCCD, has mean-field cost and reproduces DOCI energetically. We show that unlike pCCD, pECCD also reproduces the DOCI wave function with high accuracy. Moreoever, pEC...

Henderson, Thomas M; Scuseria, Gustavo E

2015-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

DISCOVERY OF GIANT RELIC RADIO LOBES STRADDLING THE CLASSICAL DOUBLE RADIO GALAXY 3C452  

SciTech Connect (OSTI)

We report the discovery of a pair of megaparsec size radio lobes of extremely steep spectrum straddling the well-known classical double radio source 3C452. The existence of such fossil lobes was unexpected since for the past several decades this powerful radio galaxy has been regarded as a textbook example of an edge-brightened double radio source of Fanaroff-Riley type II (FR II), which we now show to be a bona fide ''double-double'' radio galaxy (DDRG). Thus, 3C452 presents a uniquely robust example of recurrent nuclear activity in which the restarted jets are expanding non-relativistically within the relic synchrotron plasma from an earlier active phase and hence the inner double fed by them has evolved into a perfectly normal FR II radio source. This situation contrasts markedly with the strikingly narrow inner doubles observed in a few other DDRGs that have been interpreted in terms of compression of the synchrotron plasma of the relic outer lobes at the relativistic bow-shocks driven by the near ballistic propagation of the two inner jets through the relic plasma. A key ramification of this finding is that it cautions against the currently widespread use of FR II classical double radio sources for testing cosmological models and unification schemes for active galactic nuclei.

Sirothia, S. K.; Gopal-Krishna [National Centre for Radio Astrophysics, TIFR, Post Bag No. 3, Pune University Campus, Ganeshkhind, Pune 411 007 (India); Wiita, Paul J., E-mail: sirothia@ncra.tifr.res.in, E-mail: krishna@ncra.tifr.res.in, E-mail: wiitap@tcnj.edu [Department of Physics, College of New Jersey, P.O. Box 7718, Ewing, NJ 08628 (United States)

2013-03-01T23:59:59.000Z

182

Electrostatic dynamo in reversed field pinch plasmas: simple common fundamental nature of laminar and turbulent regimes  

SciTech Connect (OSTI)

Within the framework of magnetohydrodynamic (MHD) numerical modelling, the Reversed Field Pinch (RFP) has been found to develop turbulent or laminar regimes switching from the former to the latter in a continuous way depending on the strength of dissipative forces. The laminar solution corresponds to a simple global helical deformation of the current channel. A helically-modulated electrostatic field arises in order to account for the helical modulation of the current density along magnetic field lines. The associated electrostatic drift yields the main component of the dynamo velocity field. The continuity of the transition between the two regimes suggests that the simple laminar helical solution can provide a fruitful intuitive description of the RFP dynamo in general. In fact, the electrostatic drift remains the main component of the dynamo velocity field in the non-stationary turbulent regime for a sustained RFP. We show that the same dynamo action, due to the electrostatic drift, is provided either by one single mode and its harmonics, as in the laminar regime, or by a rich spectrum of modes with the action of full nonlinear coupling, as in the turbulent one. Here, we review our previous work and present new elements to clarify the physics of the RFP dynamo. Many of the MHD predictions are in good agreement with experimental findings.

Bonfiglio, D.; Cappello, S. [Consorzio RFX, Associazione EURATOM-ENEA sulla fusione, Padova (Italy); Escande, D. F. [Consorzio RFX, Associazione EURATOM-ENEA sulla fusione, Padova (Italy); CNRS-Universite de Provence, Marseille (France)

2006-11-30T23:59:59.000Z

183

Efficient Evaluation of Binding Free Energy Using Continuum Electrostatics Danzhi Huang and Amedeo Caflisch*  

E-Print Network [OSTI]

Efficient Evaluation of Binding Free Energy Using Continuum Electrostatics Solvation Danzhi Huang of the absolute free energy of binding. A predictive accuracy of about 1.0 kcal/mol is obtained for 13 and 29 into proteins of known structure require fast and accurate methods for the evaluation of binding free energies.1

Caflisch, Amedeo

184

ChemicalPhysicsLetters270 (1997) 476-483 Electrostatics by Brownian dynamics  

E-Print Network [OSTI]

ELSEVIER 30May 1997 ChemicalPhysicsLetters270 (1997) 476-483 CHEMICAL PHYSICS LETTERS, Jerusalem 91904, Israel Received26 December1996;in finalform31 March1997 Abstract The isomorphism between is demonstrated in simple illustrative calculations. © 1997 Elsevier Science B.V. 1. Introduction Electrostatic

Agmon, Noam

185

Electrostatically-driven elastomer components for user-reconfigurable high density microfluidics  

E-Print Network [OSTI]

Electrostatically-driven elastomer components for user-reconfigurable high density microfluidics microfluidic system intended for very large scale integration (VLSI) microfluidics. By adding thin film metal with standard PDMS microfluidics, has actuation voltages low enough to be driven by commercial CMOS IC's and can

Maharbiz, Michel

186

Design considerations for electrostatic microvalves with applications in poly(dimethylsiloxane)-based microfluidics  

E-Print Network [OSTI]

(dimethylsiloxane)-based microfluidics Amit V. Desai,a Joshua D. Tice,a Christopher A. Apblettbc and Paul J. A. Kenis*a Received 19th of integrated microfluidic chips for a wide range of applications. In this paper, we present an analytical model to guide the design of electrostatic microvalves that can be integrated into microfluidic chips using

Kenis, Paul J. A.

187

Branches of electrostatic turbulence inside solitary plasma structures in the auroral ionosphere  

SciTech Connect (OSTI)

The excitation of electrostatic turbulence inside space-observed solitary structures is a central topic of this exposition. Three representative solitary structures observed in the topside auroral ionosphere as large-amplitude nonlinear signatures in the electric field and magnetic-field-aligned current on the transverse scales of ?10{sup 2}–10{sup 3}?m are evaluated by the theories of electrostatic wave generation in inhomogeneous background configurations. A quantitative analysis shows that the structures are, in general, effective in destabilizing the inhomogeneous energy-density-driven (IEDD) waves, as well as of the ion acoustic waves modified by a shear in the parallel drift of ions. It is demonstrated that the dominating branch of the electrostatic turbulence is determined by the interplay of various driving sources inside a particular solitary structure. The sources do not generally act in unison, so that their common effect may be inhibiting for excitation of electrostatic waves of a certain type. In the presence of large magnetic-field-aligned current, which is not correlated to the inhomogeneous electric field inside the structure, the ion-acoustic branch becomes dominating. In other cases, the IEDD instability is more central.

Golovchanskaya, Irina V.; Kozelov, Boris V. [Polar Geophysical Institute, Apatity 184209 (Russian Federation); Chernyshov, Alexander A.; Mogilevsky, Mikhail M. [Space research Institute, Moscow 117997 (Russian Federation); Ilyasov, Askar A. [Moscow Institute of Physics and Technology, Moscow 141700 (Russian Federation); Space research Institute, Moscow 117997 (Russian Federation)

2014-08-15T23:59:59.000Z

188

Entropy bound of a charged object and electrostatic self-energy in black holes  

E-Print Network [OSTI]

Without pretending to any rigour, we find a general expression of the electrostatic self-energy in static black holes with spherical symmetry. We determine the entropy bound of a charged object by assuming the existence of thermodynamics for these black holes. By combining these two results, we show that the entropy bound does not depend on the considered black hole.

B. Linet

1999-11-30T23:59:59.000Z

189

Electrostatic self-force in a static weak gravitational field with cylindrical symmetry  

E-Print Network [OSTI]

We determine the electrostatic self-force at rest in an arbitrary static metric with cylindrical symmetry in the linear approximation in the Newtonian constant. In linearised Einstein theory, we express it in terms of the components of the energy-momentum tensor.

B. Boisseau; C. Charmousis; B. Linet

1996-03-04T23:59:59.000Z

190

A METHOD FOR IMAGING CORROSION DAMAGE IN THIN PLATES FROM ELECTROSTATIC DATA  

E-Print Network [OSTI]

A METHOD FOR IMAGING CORROSION DAMAGE IN THIN PLATES FROM ELECTROSTATIC DATA Peter G. Kaup 1 nondestructive evaluation of corrosion in plates is considered. The inpection method uses boundary measurements of currents and voltages to determine the material loss caused by corrosion. The development of the method

Santosa, Fadil

191

Integrated low emission cleanup system for direct coal-fueled turbines (electrostatic agglomeration)  

SciTech Connect (OSTI)

The objective of this contract was to investigate the removal of SO[sub x] and particulate matter from direct coal fired combustion gas streams at high temperature and high pressure conditions. This investigation was to be accomplished through a bench scale testing and evaluation program for SO[sub x] removal and the innovative particulate collection concept of particulate growth through electrostatic agglomeration followed by high efficiency mechanical collection. The process goal was to achieve control better than that required by 1979 New Source Performance Standards. During Phase I, the designs of the combustor and gas cleanup apparatus were successfully completed. Hot gas cleanup was designed to be accomplished at temperature levels between 1800[degrees] and 2500[degrees]F at pressures up to 15 atmospheres. The combustor gas flow rate could be varied between 0.2--0.5 pounds per second. The electrostatic agglomerator residence time could be varied between 0.25 to 3 seconds. In Phase II, all components were fabricated, and erected successfully. Test data from shakedown testing was obtained. Unpredictable difficulties in pilot plant erection and shakedown consumed more budget resources than was estimated and as a consequence DOE, METC, decided ft was best to complete the contract at the end of Phase II. Parameters studied in shakedown testing revealed that high-temperature high pressure electrostatics offers an alternative to barrier filtration in hot gas cleanup but more research is needed in successful system integration between the combustor and electrostatic agglomerator.

Quimby, J.M.; Kumar, K.S.

1992-01-01T23:59:59.000Z

192

An impact model of the electrostatic force: Coulomb's law re-visited  

E-Print Network [OSTI]

The electrostatic force is described in this model by the action of electric dipole distributions on charged particles. The individual hypothetical dipoles are propagating at the speed of light in vacuum transferring momentum and energy between charges through interactions on a local basis. The model is constructed in analogy to an impact model describing the gravitational forces.

K. Wilhelm; B. N. Dwivedi; H. Wilhelm

2014-05-27T23:59:59.000Z

193

Electrostatic Energy Harvester and Li-Ion Charger Circuit for Micro-Scale Applications  

E-Print Network [OSTI]

, low duty-cycle task multiplex- ing, and smart power-aware networks, the energy stored in micro- scaleElectrostatic Energy Harvester and Li-Ion Charger Circuit for Micro-Scale Applications Erick O micro-systems like biomedical implants and ad-hoc wireless transceiver micro-sensors continue

Rincon-Mora, Gabriel A.

194

Photothermal electrostatics of the d-poiyvlnylidene fluoride photopyroelectric hydrogen gas sensor  

E-Print Network [OSTI]

atoms adsorbed and subsequently absorbed in the Pd ground electrode of the PVDF. In this paper in Fig. 1. This amounts to a capacitor consisting of Pd-elec- trode (ground; anode)/PVDF dielectric/Al-Ni-electrode) A detailed photothermal electrostatic consideration of the Pd-pyroelectric junction H, sensor is presented

Mandelis, Andreas

195

Electrostatic electron cyclotron waves generated by low-energy electron beams  

E-Print Network [OSTI]

Electrostatic electron cyclotron waves generated by low-energy electron beams J. D. Menietti, O the role of electron beams with E ] 1 keV in the generation of these waves. Observed plasma parameters these waves are an indicator of the presence of low-energy electron beams and a cold electron component (E ] 0

Santolik, Ondrej

196

Soft-X-Ray-Charged Vertical Electrets and Its Application to Electrostatic Transducers  

E-Print Network [OSTI]

Soft-X-Ray-Charged Vertical Electrets and Its Application to Electrostatic Transducers Makoto A novel charging method for vertical electrets in narrow gaps using soft X-rays has been developed is necessary after charging the electrets. Recently, we have developed a new charging method using soft X-ray

Kasagi, Nobuhide

197

Turing's normal numbers: towards randomness Veronica Becher  

E-Print Network [OSTI]

presumably in 1938 Alan Turing gave an algorithm that produces real numbers normal to every integer base- putable normal numbers, and this result should be attributed to Alan Turing. His manuscript entitled "A

198

Yukawa-field approximation of electrostatic free energy and dielectric boundary force This article has been downloaded from IOPscience. Please scroll down to see the full text article.  

E-Print Network [OSTI]

Yukawa-field approximation of electrostatic free energy and dielectric boundary force This article.1088/0951-7715/24/11/011 Yukawa-field approximation of electrostatic free energy and dielectric boundary force Hsiao-Bing Cheng1. The electrostatic free energy determines the dielectric boundary force that in turn influences crucially

Li, Bo

199

Exploratory test of utility of magnetic insulation for electrostatic accelerators L. R. Grisham, A. von Halle, A. F. Carpe, Guy Rossi, K. R. Gilton et al.  

E-Print Network [OSTI]

Exploratory test of utility of magnetic insulation for electrostatic accelerators L. R. Grisham, A;Exploratory test of utility of magnetic insulation for electrostatic accelerators L. R. Grisham,a) A. von of the electrodes in an electrostatic accelerator, along with their support structures, might suppress field

Gilson, Erik

200

SMITH NORMAL FORM AND LAPLACIANS DINO LORENZINI  

E-Print Network [OSTI]

SMITH NORMAL FORM AND LAPLACIANS DINO LORENZINI Abstract. Let M denote the Laplacian matrix of a graph G. Associated with G is a finite group (G), obtained from the Smith normal form of M, and whose /Im(M). This group can be computed in practice using the Smith normal form of M, as follows. Given any

Lorenzini, Dino J.

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Combinatorial Maps with Normalized Knot Dainis ZEPS  

E-Print Network [OSTI]

Combinatorial Maps with Normalized Knot Dainis ZEPS Abstract We consider combinatorial maps's normalization doesn't affect combinatorial map what concerns its generality. Knot's normalization leads to more concise numeration of corners in maps, e.g., odd or even corners allow easy to follow distinguished cycles

Paris-Sud XI, Université de

202

Review of double beta decay experiments  

E-Print Network [OSTI]

The brief review of current experiments on search and studying of double beta decay processes is done. Best present limits on $\\langle m_{\

A. S. Barabash

2014-03-12T23:59:59.000Z

203

Operator Analysis of Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

We study the effective operators of the standard model fields which would yield an observable rate of neutrinoless double beta decay. We particularly focus on the possibility that neutrinoless double beta decay is dominantly induced by lepton-number-violating higher dimensional operators other than the Majorana neutrino mass. Our analysis can be applied to models in which neutrinoless double beta decay is induced either by a strong dynamics or by quantum gravity effects at a fundamental scale near the TeV scale as well as the conventional models in which neutrinoless double beta decay is induced by perturbative renormalizable interactions.

Kiwoon Choi; Kwang Sik Jeong; Wan Young Song

2002-07-19T23:59:59.000Z

204

Double perovskite catalysts for oxidative coupling  

DOE Patents [OSTI]

Alkali metal doped double perovskites containing manganese and at least one of cobalt, iron and nickel are useful in the oxidative coupling of alkane to higher hydrocarbons.

Campbell, K.D.

1991-01-01T23:59:59.000Z

205

Neutrinoless Double Beta Decay: Present and Future  

E-Print Network [OSTI]

Present status, and future plans for Double Beta Decay searches are reviewed. Given the recent observations of neutrino oscillations, a possibility to observe $\\beta\\beta(0\

Oliviero Cremonesi

2002-10-04T23:59:59.000Z

206

Review of double beta decay experiments  

E-Print Network [OSTI]

The brief review of current experiments on search and studying of double beta decay processes is done. Best present limits on $\\langle m_{\

Barabash, A S

2014-01-01T23:59:59.000Z

207

Magnetohydrodynamic dynamo in reversed field pinch plasmas: Electrostatic drift nature of the dynamo velocity field  

SciTech Connect (OSTI)

Within the framework of magnetohydrodynamic (MHD) numerical modeling, the reversed field pinch (RFP) has been found to develop turbulent or laminar regimes switching from the former to the latter in a continuous way when the strength of dissipative forces increases. The laminar solution corresponds to a simple global helical deformation of the current channel and is associated with an electrostatic dynamo field. The related electrostatic drift yields the main component of the dynamo velocity field. While quite natural in the stationary helical state, this analysis is shown to extend also to the dynamic turbulent regime for an Ohmic RFP. The continuity of the transition between the two regimes suggests that the simple helical symmetric solution can provide a fruitful intuitive description of the RFP dynamo in general. Many of the MHD predictions are in good agreement with experimental findings.

Cappello, S.; Bonfiglio, D.; Escande, D.F. [Consorzio RFX, Associazione Euratom-ENEA sulla Fusione, Corso Stati Uniti 4, 35127 Padova (Italy); Consorzio RFX, Associazione Euratom-ENEA sulla Fusione, Corso Stati Uniti 4, 35127 Padova (Italy); UMR 6633, CNRS-Universite de Provence, Marseille (France)

2006-05-15T23:59:59.000Z

208

MULTI-POLLUTANT CONTROL USING MEMBRANE--BASED UP-FLOW WET ELECTROSTATIC PRECIPITATION  

SciTech Connect (OSTI)

This is the second quarterly report of the ''Multi-Pollutant Control Using Membrane-Based Upflow Wet Electrostatic Precipitation'' project funded by the US Department of Energy's National Energy Technology Laboratory under DOE Award No. DE-FC26-02NT41592 to Croll-Reynolds Clean Air Technologies (CRCAT). In this 18 month project, CRCAT and its team members will conduct detailed emission tests of metallic and new membrane collection material within a wet electrostatic precipitator (WESP) at First Energy's Penn Power's Bruce Mansfield (BMP) plant in Shippingport, Pa. Test results performed on the existing metallic WESP during November of 2002 showed consistent results with previous test results. Average collection efficiency of 89% on SO{sub 3} mist was achieved. Additionally, removal efficiencies of 62% were achieved at very high velocity, greater than 15 ft./sec. During the first quarter of 2003 final design and start of fabrication of the membrane wet ESP was undertaken.

James Reynolds

2003-04-30T23:59:59.000Z

209

MULTI-POLLUTANT CONTROL USING MEMBRANE-BASED UP-FLOW WET ELECTROSTATIC PRECIPITATION  

SciTech Connect (OSTI)

This is the first quarterly report of the ''Multi-Pollutant Control Using Membrane--Based Upflow Wet Electrostatic Precipitation'' project funded by the US Department of Energy's National Energy Technology Laboratory under DOE Award No. DE-FC26-02NT41592 to Croll-Reynolds Clean Air Technologies (CRCAT). In this 18 month project, CRCAT and its team members will conduct detailed emission tests of metallic and new membrane collection material within a wet electrostatic precipitator (WESP) at First Energy's Penn Power's Bruce Mansfield (BMP) plant in Shippingport, Pa. Test results performed on the existing metallic WESP during November of 2002 showed consistent results with previous test results. Average collection efficiency of 89% on SO{sub 3} mist was achieved. Additionally, removal efficiencies of 62% were achieved at very high velocity, greater than 15 ft./sec.

James Reynolds

2003-01-01T23:59:59.000Z

210

Systems and methods for the magnetic insulation of accelerator electrodes in electrostatic accelerators  

DOE Patents [OSTI]

The present invention provides systems and methods for the magnetic insulation of accelerator electrodes in electrostatic accelerators. Advantageously, the systems and methods of the present invention improve the practically obtainable performance of these electrostatic accelerators by addressing, among other things, voltage holding problems and conditioning issues. The problems and issues are addressed by flowing electric currents along these accelerator electrodes to produce magnetic fields that envelope the accelerator electrodes and their support structures, so as to prevent very low energy electrons from leaving the surfaces of the accelerator electrodes and subsequently picking up energy from the surrounding electric field. In various applications, this magnetic insulation must only produce modest gains in voltage holding capability to represent a significant achievement.

Grisham, Larry R

2013-12-17T23:59:59.000Z

211

Electromagnetic field generation in the downstream of electrostatic shocks due to electron trapping  

E-Print Network [OSTI]

A new magnetic field generation mechanism in electrostatic shocks is found, which can produce fields with magnetic energy density as high as 0.01 of the kinetic energy density of the flows on time scales $ \\tilde \\, 10^4 \\, {\\omega}_{pe}^{-1}$. Electron trapping during the shock formation process creates a strong temperature anisotropy in the distribution function, giving rise to the pure Weibel instability. The generated magnetic field is well-confined to the downstream region of the electrostatic shock. The shock formation process is not modified and the features of the shock front responsible for ion acceleration, which are currently probed in laser-plasma laboratory experiments, are maintained. However, such a strong magnetic field determines the particle trajectories downstream and has the potential to modify the signatures of the collisionless shock.

Stockem, A; Fonseca, R A; Silva, L O

2014-01-01T23:59:59.000Z

212

Formation of a field reversed configuration for magnetic and electrostatic confinement of plasma  

DOE Patents [OSTI]

A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

Rostoker, Norman; Binderbauer, Michl

2003-12-16T23:59:59.000Z

213

Formation of a field reversed configuration for magnetic and electrostatic confinement of plasma  

DOE Patents [OSTI]

A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

Rostoker, Norman; Binderbauer, Michl; Qerushi, Artan; Tahsiri, Hooshang

2006-02-07T23:59:59.000Z

214

Formation of a field reversed configuration for magnetic and electrostatic confinement of plasma  

DOE Patents [OSTI]

A system and method for containing plasma and forming a Field Reversed Configuration (FRC) magnetic topology are described in which plasma ions are contained magnetically in stable, non-adiabatic orbits in the FRC. Further, the electrons are contained electrostatically in a deep energy well, created by tuning an externally applied magnetic field. The simultaneous electrostatic confinement of electrons and magnetic confinement of ions avoids anomalous transport and facilitates classical containment of both electrons and ions. In this configuration, ions and electrons may have adequate density and temperature so that upon collisions they are fused together by nuclear force, thus releasing fusion energy. Moreover, the fusion fuel plasmas that can be used with the present confinement system and method are not limited to neutronic fuels only, but also advantageously include advanced fuels.

Rostoker, Norman; Binderbauer, Michl; Qerushi, Artan; Tahsiri, Hooshang

2007-02-20T23:59:59.000Z

215

Selective electrostatic binding of ions by monolayers of mercaptan derivatives adsorbed to gold substrates  

SciTech Connect (OSTI)

A single, self-assembled monolayer of organic material is used to impart pH-dependent electrostatic-based recognition capability to an Au electrode. The results show that 4-aminothiophenol and related mercaptans change the surface characteristics of naked Au toward the adsorption of positively and negatively charged ions as a function of pH. For example, anthraquinone-2,6-disulfonate irreversibly adsorbs to naked Au surfaces over a broad range of pH. However, a preadsorbed monolayer of 4-aminothiophenol prevents adsorption of anthraquinone-2,6-disulfonate at high pH but electrostatically binds it at low pH. The principle of pH-dependent binding is general for a number of amine-, carboxylic acid-, and pyridine-terminated mercaptan derivatives adsorbed to Au surfaces.

Sun, Li; Johnson, B.; Wade, T.; Crooks, R.M. (Univ. of New Mexico, Albuquerque (USA))

1990-12-27T23:59:59.000Z

216

Non-invasive optoelectronic system for measurement of electrostatic discharge (ESD) induced phenomena  

SciTech Connect (OSTI)

The design of a high speed optoelectronic system consisting of an electrically floating detector/transmitter module, coupled to a receiver by a fiber optic link, is described. Typical applications of this optical decoupled system, involving electrostatic discharge (ESD), are described. These include: the optical signature characterization of discharges, and the measurement of conducted and radiated electromagnetic interference (EMI) due to ESD. Results of experiments conducted to demonstrate the qualitative performance characteristics of the measurement system are presented.

Greason, W.D.; Kucerovsky, Z.; Bulach, S.; Flatley, M.W. [Univ. of Western Ontario, London, Ontario (Canada). Dept. of Electrical Engineering

1995-12-31T23:59:59.000Z

217

Lambda hyperonic effect on the normal driplines  

E-Print Network [OSTI]

A generalized mass formula is used to calculate the neutron and proton drip lines of normal and lambda hypernuclei treating non-strange and strange nuclei on the same footing. Calculations suggest existence of several bound hypernuclei whose normal cores are unbound. Addition of Lambda or, Lambda-Lambda hyperon(s) to a normal nucleus is found to cause shifts of the neutron and proton driplines from their conventional limits.

C. Samanta; P. Roy Chowdhury; D. N. Basu

2008-02-21T23:59:59.000Z

218

Integrated low emission cleanup system for direct coal-fueled turbines (electrostatic agglomeration)  

SciTech Connect (OSTI)

The objective of this contract is to investigate the removal of So{sub x} and particulate matter from direct coal-fired combustion gas streams at high temperature and high pressure conditions. This investigation will be accomplished through a bench-scale testing and evaluation program employing sorbent mixed with a coal-water slurry for So{sub x} removal, and an innovative particulate control concept. The particulate control device utilizes electrostatic agglomeration followed by a high efficiency mechanical collector (cyclone). The process goal is to achieve particulate collection efficiency better than that required by the 1979 new source performance standards. An additional goal is to demonstrate 70% So{sub x} removal efficiency. This research project is now in the second of a 3 phase (Phase II) project. Phase II is to fabricate the combustor and particulate control devices and install the system at a test facility located at Research-Cottrell's, KVB Western Laboratory, Santa Ana, CA. There are three functional categories, or tasks which are to be completed in sequence. These tasks are itemized as follows: Design, procurement, and installation; Shakedown and startup; Reporting. Attempts to validate the concept of electrostatic agglomeration were not possible in the shakedown program before budget constraints halted the program. What was learned was that electrostatic precipitation is feasible in the temperature range of 1600--1800{degrees}F and at pressures above 10 atmospheres.

Quimby, J.M.

1992-02-01T23:59:59.000Z

219

Dynamic pull-in of parallel plate and torsional electrostatic MEMS actuators.  

SciTech Connect (OSTI)

An analysis of the dynamic characteristics of pull-in for parallel-plate and torsional electrostatic actuators is presented. Traditionally, the analysis for pull-in has been done using quasi-static assumptions. However, it was recently shown experimentally that a step input can cause a decrease in the voltage required for pull-in to occur. We propose an energy-based solution for the step voltage required for pull-in that predicts the experimentally observed decrease in the pull-in voltage. We then use similar energy techniques to explore pull-in due to an actuation signal that is modulated depending on the sign of the velocity of the plate (i.e., modulated at the instantaneous mechanical resonant frequency). For this type of actuation signal, significant reductions in the pull-in voltage can theoretically be achieved without changing the stiffness of the structure. This analysis is significant to both parallel-plate and torsional electrostatic microelectromechanical systems (MEMS) switching structures where a reduced operating voltage without sacrificing stiffness is desired, as well as electrostatic MEMS oscillators where pull-in due to dynamic effects needs to be avoided.

Nielson, Gregory N.; Barbastathis, George (Massachusetts Institute of Technology, Cambridge, MA)

2005-02-01T23:59:59.000Z

220

Electrostatic ion-acoustic-like instabilities in the solar wind with a backstreaming alpha particle beam  

SciTech Connect (OSTI)

Nonlinear electrostatic instabilities have been shown to occur frequently and under very different conditions in plasma with two ion beams such as the fast solar wind. These instabilities can be triggered when the phase velocity of electrostatic ion-acoustic waves propagating forward and backward relative to the interplanetary magnetic field overlaps due to the presence of a finite amplitude of circularly polarized wave. The instabilities can be triggered by waves supported by the same ion component, or by waves supported by different ion components. By assuming a beam of alpha particles moving backward relative to the external magnetic field, as observed in some events in the fast solar wind, it is shown that a very small negative drift velocity of the alpha particle beam relative to the core plasma--a few percent of the local Alfven velocity--can trigger a very rich variety of nonlinear electrostatic acousticlike instabilities. Their growth rates can be rather large and they persist for larger negative alpha particles drift velocities and temperatures.

Gomberoff, L. [Departamento de Fisica, Facultad de Ciencias, Universidad de Chile, Santiago (Chile); Gomberoff, K. [Department of Physics, Technion, Haifa 32000 (Israel); Deutsch, A. [Rafael, P.O. Box 2250, Haifa 31021 (Israel)

2010-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

AUGUSTOSAGNOTTI ScuolaNormaleSuperiore-Pisa  

E-Print Network [OSTI]

JoelScherk,unfisicodell'Eco- le Normale Supérieure di Parigi scomparso prematuramente nel- l'80. La stessa Teoria, creata nel 1968

Abbondandolo, Alberto

222

alla Normale 1_la Scuola 9  

E-Print Network [OSTI]

funzione che in Francia viene svolta dalla gemella �cole Normale Supérieure di Parigi. A questa antica

Abbondandolo, Alberto

223

Conformal Universality in Normal Matrix Ensembles  

E-Print Network [OSTI]

A remarkable property of Hermitian ensembles is their universal behavior, that is, once properly rescaled the eigenvalue statistics does not depend on particularities of the ensemble. Recently, normal matrix ensembles have attracted increasing attention, however, questions on universality for these ensembles still remain under debate. We analyze the universality properties of random normal ensembles. We show that the concept of universality used for Hermitian ensembles cannot be directly extrapolated to normal ensembles. Moreover, we show that the eigenvalue statistics of random normal matrices with radially symmetric potential can be made universal under a conformal transformation.

Alexei M. Veneziani; Tiago Pereira; Domingos H. U. Marchetti

2009-09-18T23:59:59.000Z

224

Double bevel construction of a diamond anvil  

DOE Patents [OSTI]

A double or multiple bevel culet geometry is used on a diamond anvil in a high pressure cell apparatus to provide increased sample pressure and stability for a given force applied to the diamond tables. Double or multiple bevel culet geometries can also be used for sapphire or other hard crystal anvils. Pressures up to and above 5 Megabars can be reached. 8 figs.

Moss, W.C.

1988-10-11T23:59:59.000Z

225

Double beta decay: experiments and theory review  

E-Print Network [OSTI]

Neutrinoless double beta decay is one of the most powerful tools to set the neutrino mass absolute scale and establish whether the neutrino is a Majorana particle. After a summary of the neutrinoless double beta decay phenomenology, the present status of the experimental search for this rare decay is reported and the prospects for next generation experiments are reviewed.

A. Nucciotti

2007-07-28T23:59:59.000Z

226

Neutrinoless double beta decay and neutrino physics  

E-Print Network [OSTI]

The connection of neutrino physics with neutrinoless double beta decay is reviewed. After presenting the current status of the PMNS matrix and the theoretical background of neutrino mass and lepton mixing, we will summarize the various implications of neutrino physics for double beta decay. The influence of light sterile neutrinos and other exotic modifications of the three neutrino picture is also discussed.

Werner Rodejohann

2012-08-20T23:59:59.000Z

227

Reliability Estimation for Double Containment Piping  

SciTech Connect (OSTI)

Double walled or double containment piping is considered for use in the ITER international project and other next-generation fusion device designs to provide an extra barrier for tritium gas and other radioactive materials. The extra barrier improves confinement of these materials and enhances safety of the facility. This paper describes some of the design challenges in designing double containment piping systems. There is also a brief review of a few operating experiences of double walled piping used with hazardous chemicals in different industries. This paper recommends approaches for the reliability analyst to use to quantify leakage from a double containment piping system in conceptual and more advanced designs. The paper also cites quantitative data that can be used to support such reliability analyses.

L. Cadwallader; T. Pinna

2012-08-01T23:59:59.000Z

228

Extremal unital completely positive normal maps  

E-Print Network [OSTI]

We study the convex set of unital completely positive normal map on a von-Neumann algebra and find a necessary and sufficient condition for an element in the convex set to be extremal. We also deal with the same problem for the convex subset which admits a faithful normal state.

Anilesh Mohari

2013-01-11T23:59:59.000Z

229

Normalizing the causality between time series  

E-Print Network [OSTI]

Recently, a rigorous yet concise formula has been derived to evaluate the information flow, and hence the causality in a quantitative sense, between time series. To assess the importance of a resulting causality, it needs to be normalized. The normalization is achieved through distinguishing three types of fundamental mechanisms that govern the marginal entropy change of the flow recipient. A normalized or relative flow measures its importance relative to other mechanisms. In analyzing realistic series, both absolute and relative information flows need to be taken into account, since the normalizers for a pair of reverse flows belong to two different entropy balances; it is quite normal that two identical flows may differ a lot in relative importance in their respective balances. We have reproduced these results with several autoregressive models. We have also shown applications to a climate change problem and a financial analysis problem. For the former, reconfirmed is the role of the Indian Ocean Dipole as ...

Liang, X San

2015-01-01T23:59:59.000Z

230

Vanishing effective mass of the neutrinoless double beta decay including light sterile neutrinos  

E-Print Network [OSTI]

Light sterile neutrinos with masses at the sub-eV or eV scale are hinted by current experimental and cosmological data. Assuming the Majorana nature of these hypothetical particles, we discuss their effects in the neutrinoless double beta decay by exploring the implications of a vanishing effective Majorana neutrino mass. Allowed ranges of neutrino masses, mixing angles and Majorana CP-violating phases are illustrated in some instructive cases for both normal and inverted mass hierarchies of three active neutrinos.

Y. F. Li; Si-shuo Liu

2011-11-28T23:59:59.000Z

231

Neutrinoless Double Beta Decay in Light of SNO Salt Data  

E-Print Network [OSTI]

Limits From Neutrinoless Double-Beta Decay (Rev. ),” incan also cause neutrinoless double-beta decay (see e.g. , [LBNL-53996 Neutrinoless Double Beta Decay in Light of SNO

Murayama, Hitoshi

2009-01-01T23:59:59.000Z

232

What can we learn from neutrinoless double beta decay experiments?  

E-Print Network [OSTI]

312 P. Vogel, “Limits From Neutrinoless Double-Beta Decay (Assumptions No detected neutrinoless double ?-decay lightestscale (1 ± 0.05 eV), No neutrinoless double ?-decay lightest

Bahcall, John N.

2009-01-01T23:59:59.000Z

233

A Search for Neutrinoless Double Beta Decay of Te-130  

E-Print Network [OSTI]

Bolometric experiments for neutrinoless double beta 3.2.1A Search for Neutrinoless Double Beta Decay of Te by AdamSpring 2010 A Search for Neutrinoless Double Beta Decay of

Bryant, Adam Douglas

2010-01-01T23:59:59.000Z

234

Neutrinoless Double Beta Decay in Light of SNO Salt Data  

E-Print Network [OSTI]

14] P. Vogel, “Limits From Neutrinoless Double-Beta Decay (Higgs, can also cause neutrinoless double-beta decay (seeLBNL-53996 Neutrinoless Double Beta Decay in Light of SNO

Murayama, Hitoshi

2009-01-01T23:59:59.000Z

235

Chiral Two-body Currents and Neutrinoless Double Beta Decay  

SciTech Connect (OSTI)

The nuclear matrix elements (NMEs) of neutrinoless double-beta (0{nu}{beta}{beta}) decay are studied using weak currents derived in the framework of chiral effective field theory. Apart from the standard one-body (1b) currents, it is shown that two-body (2b) currents contribute to weak processes. The normal-ordered 1b part of 2b currents modifies the Gamow-Teller (GT){sigma}{tau}{sup -} part of the 1b current, contributing to the well-known quenching of GT single-{beta} decays. The momentum-transfer dependence of the quenching due to 2b currents is also predicted. Therefore, including 2b currents allows to address, microscopically, the problem of the axial weak coupling (g{sub A}) value, which is the biggest uncertainty in the 0{nu}{beta}{beta} decay NME calculations for all available methods.

Menendez, Javier [Institut fuer Kernphysik, Technische Universitaet Darmstadt, 64289 Darmstadt (Germany); ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, 64291 Darmstadt (Germany)

2011-12-16T23:59:59.000Z

236

Neutrinoless Double Beta Decay and Future Neutrino Oscillation Precision Experiments  

E-Print Network [OSTI]

We discuss to what extent future precision measurements of neutrino mixing observables will influence the information we can draw from a measurement of (or an improved limit on) neutrinoless double beta decay. Whereas the Delta m^2 corresponding to solar and atmospheric neutrino oscillations are expected to be known with good precision, the parameter theta_{12} will govern large part of the uncertainty. We focus in particular on the possibility of distinguishing the neutrino mass hierarchies and on setting a limit on the neutrino mass. We give the largest allowed values of the neutrino masses which allow to distinguish the normal from the inverted hierarchy. All aspects are discussed as a function of the uncertainty stemming from the involved nuclear matrix elements. The implications of a vanishing, or extremely small, effective mass are also investigated. By giving a large list of possible neutrino mass matrices and their predictions for the observables, we finally explore how a measurement of (or an improved limit on) neutrinoless double beta decay can help to identify the neutrino mass matrix if more precise values of the relevant parameters are known.

S. Choubey; W. Rodejohann

2005-07-25T23:59:59.000Z

237

Neutrinoless double beta decay and future neutrino oscillation precision experiments  

SciTech Connect (OSTI)

We discuss to what extent future precision measurements of neutrino mixing observables will influence the information we can draw from a measurement of (or an improved limit on) neutrinoless double beta decay. Whereas the {delta}m{sup 2} corresponding to solar and atmospheric neutrino oscillations are expected to be known with good precision, the parameter {theta}{sub 12} will govern a large part of the uncertainty. We focus, in particular, on the possibility of distinguishing the neutrino mass hierarchies and on setting a limit on the neutrino mass. We give the largest allowed values of the neutrino masses which allow to distinguish the normal from the inverted hierarchy. All aspects are discussed as a function of the uncertainty stemming from the involved nuclear matrix elements. The implications of a vanishing, or extremely small, effective mass are also investigated. By giving a large list of possible neutrino mass matrices and their predictions for the observables, we finally explore how a measurement of (or an improved limit on) neutrinoless double beta decay can help to identify the neutrino mass matrix if more precise values of the relevant parameters are known.

Choubey, Sandhya [Theoretical Physics, University of Oxford, 1 Keble Road, Oxford OX1 3NP (United Kingdom); Rodejohann, Werner [Physik-Department, Technische Universitaet Muenchen, James-Franck-Strasse, D-85748 Garching (Germany)

2005-08-01T23:59:59.000Z

238

Smectic Order in Double-Twist Cylinders  

E-Print Network [OSTI]

I propose a double-twist texture with local smectic order, which may have been seen in recent experiments. As in the Renn-Lubensky TGB phase, the smectic order is broken only through a lattice of screw dislocations. A melted lattice of screw dislocations can produce a double-twist texture as can an unmelted lattice. In the latter case I show that geometry only allows for certain angles between smectic regions. I discuss the possibility of connecting these double-twist tubes together to form a smectic blue phase.

Randall D. Kamien

1996-11-04T23:59:59.000Z

239

Neutrinoless Double Beta Decay and Neutrino Masses  

E-Print Network [OSTI]

Neutrinoless double beta decay is a promising test for lepton number violating physics beyond the standard model of particle physics. There is a deep connection between this decay and the phenomenon of neutrino masses. In particular, we will discuss the relation between neutrinoless double beta decay and Majorana neutrino masses provided by the so-called Schechter--Valle theorem in a quantitative way. Furthermore, we will present an experimental cross check to discriminate neutrinoless double beta decay from unknown nuclear background using only one isotope, i.e., within one experiment.

Michael Duerr

2012-06-04T23:59:59.000Z

240

albicans double infection: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: Scintillator detectors can be used in experiments searching for neutrinoless double beta decay. A wide variety of double beta decay candidate isotopes can be made into...

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

National CHP Roadmap: Doubling Combined Heat and Power Capacity...  

Broader source: Energy.gov (indexed) [DOE]

National CHP Roadmap: Doubling Combined Heat and Power Capacity in the United States by 2010, March 2001 National CHP Roadmap: Doubling Combined Heat and Power Capacity in the...

242

Dynamic Phase Shifts in Nanoscale Distance Measurements by Double...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

by Double Electron Electron Resonance (DEER)† . Abstract: The off-resonant pump pulse used in double electron electron resonance (DEER) measurements produces dynamic...

243

Double layer capacitors : automotive applications and modeling  

E-Print Network [OSTI]

This thesis documents the work on the modeling of double layer capacitors (DLCs) and the validation of the modeling procedure. Several experiments were conducted to subject the device under test to a variety of ...

New, David Allen, 1976-

2004-01-01T23:59:59.000Z

244

CP Violation in Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

We argue three-flavour neutrino mixing. We consider the neutrinos as Majorana particles and see how the neutrinoless double beta decay constrains the neutrino mixing angles. Our formulation is widely valid and is applied to the neutrino oscillation experiment.

T. Fukuyama; K. Matsuda; H. Nishiura

1997-08-19T23:59:59.000Z

245

Phenomenology of single and double diffraction dissociation  

E-Print Network [OSTI]

Predictions of the gap-probability renormalization model for single and double diffraction dissociation cross sections in proton-proton collisions at the LHC are presented and compared with recent CMS measurements.

Konstantin Goulianos

2013-10-21T23:59:59.000Z

246

Phenomenology of neutrinoless double beta decay  

E-Print Network [OSTI]

This paper reviews the current status and future outlook of neutrinoless double beta decay searches, which try to provide an answer to the fundamental question of whether neutrinos are Dirac or Majorana particles.

Gómez-Cadenas, J J

2015-01-01T23:59:59.000Z

247

Phenomenology of neutrinoless double beta decay  

E-Print Network [OSTI]

This paper reviews the current status and future outlook of neutrinoless double beta decay searches, which try to provide an answer to the fundamental question of whether neutrinos are Dirac or Majorana particles.

J. J. Gómez-Cadenas; Justo Martín-Albo

2015-02-02T23:59:59.000Z

248

Double bevel construction of a diamond anvil  

DOE Patents [OSTI]

Use of double or multiple bevel culet geometry on a diamond anvil to provide increased sample pressure and stability for a given force applied to the diamond tables. 7 figs.

Moss, W.C.

1987-02-06T23:59:59.000Z

249

Phenomenology of neutrinoless double beta decay  

E-Print Network [OSTI]

This paper reviews the current status and future outlook of neutrinoless double beta decay searches, which try to provide an answer to the fundamental question of whether neutrinos are Dirac or Majorana particles.

J. J. Gómez-Cadenas; Justo Martín-Albo

2015-02-25T23:59:59.000Z

250

Controlling the Electrostatic Discharge Ignition Sensitivity of Composite Energetic Materials Using Carbon Nanotube Additives  

SciTech Connect (OSTI)

Powder energetic materials are highly sensitive to electrostatic discharge (ESD) ignition. This study shows that small concentrations of carbon nanotubes (CNT) added to the highly reactive mixture of aluminum and copper oxide (Al + CuO) significantly reduces ESD ignition sensitivity. CNT act as a conduit for electric energy, bypassing energy buildup and desensitizing the mixture to ESD ignition. The lowest CNT concentration needed to desensitize ignition is 3.8 vol.% corresponding to percolation corresponding to an electrical conductivity of 0.04 S/cm. Conversely, added CNT increased Al + CuO thermal ignition sensitivity to a hot wire igniter.

Kade H. Poper; Eric S. Collins; Michelle L. Pantoya; Michael Daniels

2014-10-01T23:59:59.000Z

251

Wet electrostatic precipitator having removable nested hexagonal collector plates and magnetic aligning and rapping means  

SciTech Connect (OSTI)

A wet electrostatic precipitator including a plurality of removable nested collecting electrodes or plates forming a repeating pattern of hexagonal collecting zones throughout the precipitator. Each collecting plate is formed with a sixty degree bend along two opposing longitudinal edges so as to allow three plates to form a self-nesting Y-shaped intersection point. Six points form a hexagonal collecting zone. The plates are removable thereby expediting replacement. A plurality of strategically placed spray nozzles provide wash fluid to the plates. Magnet sets provide for discharge electrode alignment and rapping.

Young, C.E.; Drzewiecki, G.

1984-04-10T23:59:59.000Z

252

Phase-mixing of electrostatic modes in a cold magnetized electron-positron plasma  

SciTech Connect (OSTI)

In a fluid description, we study space-time evolution of electrostatic oscillations in a cold magnetized electron-positron plasma. Nonlinear results up to third order, obtained by employing a simple perturbation technique, indicate phase-mixing and thus breaking of excited oscillations, and provide an expression for the phase-mixing time. It is shown that an increase in the strength of ambient magnetic field results in an increase in the phase-mixing time. The results of our investigation will be of relevance to astrophysical environments as well as laboratory experiments.

Maity, Chandan; Chakrabarti, Nikhil [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700 064 (India)] [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700 064 (India); Sengupta, Sudip [Institute for Plasma Research, Bhat, Gandhinagar 382 428 (India)] [Institute for Plasma Research, Bhat, Gandhinagar 382 428 (India)

2013-08-15T23:59:59.000Z

253

Amperometric Glucose Biosensor by Means of Electrostatic Layer-by-layer Adsorption onto Electrospun Polyaniline Fibers  

E-Print Network [OSTI]

with glutaraldehyde, reactions to produce covalent bonding, entrapment by an electrostatic interaction and a sol-gel reaction. All of these methods have their own merits and demerits. Hence, many studies have been carried out to increase their individual merits.11-21.... J. Faraday Discuss Chem Soc 1989, 88, 317. 4. Cao, Y.; smith, P.; Heeger, A. J. Synth Met 1992, 48, 91. 5. Lange, U.; Roznyatovskaya, N. V.; Mirsky, V. M. Anal Chim Acta 2008, 614, 1. 6. Mi, H.; Zhang, X.; Yang, S.; Ye, X.; Luo, J. Mater. Chem...

Shin, Young J.

2010-07-14T23:59:59.000Z

254

Neutrinoless Double Beta Decay and CP Violation  

E-Print Network [OSTI]

We study the relation between the Majorana neutrino mass matrices and the neutrinoless double beta decay when CP is not conserved. We give an explicit form of the decay rate in terms of a rephasing invariant quantity and demonstrate that in the presence of CP violation it is impossible to have vanishing neutrinoless double beta decay in the case of two neutrino generations (or when the third generation leptons do not mix with other leptons and hence decouple).

Patrick J. O'Donnell; Utpal Sarkar

1993-05-27T23:59:59.000Z

255

Neutrinoless double beta decay with scalar bilinears  

E-Print Network [OSTI]

One possible probe to physics beyond the standard model is to look for scalar bilinears, which couple to two fermions of the standard model. We point out that the scalar bilinears allow new diagrams contributing to the neutrinoless double beta decay. The upper bound on the neutrinoless double beta decay lifetime would then give new constraints on the ratio of the masses of these scalars to their couplings to the fermions.

H. V. Klapdor-Kleingrothaus; U. Sarkar

2002-11-18T23:59:59.000Z

256

Wavelength-doubling optical parametric oscillator  

DOE Patents [OSTI]

A wavelength-doubling optical parametric oscillator (OPO) comprising a type II nonlinear optical medium for generating a pair of degenerate waves at twice a pump wavelength and a plurality of mirrors for rotating the polarization of one wave by 90 degrees to produce a wavelength-doubled beam with an increased output energy by coupling both of the degenerate waves out of the OPO cavity through the same output coupler following polarization rotation of one of the degenerate waves.

Armstrong, Darrell J. (Albuquerque, NM); Smith, Arlee V. (Albuquerque, NM)

2007-07-24T23:59:59.000Z

257

Searches for neutrinoless double beta decay  

E-Print Network [OSTI]

Neutrinoless double beta decay is a lepton number violating process whose observation would also establish that neutrinos are their own anti-particles. There are many experimental efforts with a variety of techniques. Some (EXO, Kamland-Zen, GERDA phase I and CANDLES) started take data in 2011 and EXO has reported the first measurement of the half life for the double beta decay with two neutrinos of $^{136}$Xe. The sensitivities of the different proposals are reviewed.

B. Schwingenheuer

2012-01-24T23:59:59.000Z

258

Double shell tank waste analysis plan  

SciTech Connect (OSTI)

Waste analysis plan for the double shell tanks. SD-WM-EV-053 is Superseding SD-WM-EV-057.This document provides the plan for obtaining information needed for the safe waste handling and storage of waste in the Double Shell Tank Systems. In Particular it addresses analysis necessary to manage waste according to Washington Administrative Code 173-303 and Title 40, parts 264 and 265 of the Code of Federal Regulations.

Mulkey, C.H.; Jones, J.M.

1994-12-15T23:59:59.000Z

259

Fundamental measure theory for the electric double layer: applications to blue-energy harvesting and water desalination  

E-Print Network [OSTI]

Capacitive mixing (CAPMIX) and capacitive deionization (CDI) are promising candidates for harvesting clean, renewable energy and for the energy efficient production of potable water, respectively. Both CAPMIX and CDI involve water-immersed porous carbon electrodes at voltages of the order of hundreds of millivolts, such that counter-ionic packing is important. We propose a density functional theory (DFT) to model the electric double layer which forms near the surfaces of these porous materials. The White-Bear mark II fundamental measure theory (FMT) functional is combined with a mean-field Coulombic and a MSA-type correction to describe the interplay between dense packing and electrostatics, in good agreement with MD simulations. Compared to less elaborate mean-field models our DFT calculations reveal a higher work output for blue-energy cycles and a higher energy demand for desalination cycles.

Andreas Härtel; Mathijs Janssen; Sela Samin; René van Roij

2014-11-20T23:59:59.000Z

260

Ion acoustic solitons/double layers in two-ion plasma revisited  

SciTech Connect (OSTI)

Ion acoustic solitons and double layers are studied in a collisionless plasma consisting of cold heavier ion species, a warm lighter ion species, and hot electrons having Boltzmann distributions by Sagdeev pseudo-potential technique. In contrast to the previous results, no double layers and super-solitons are found when both the heavy and lighter ion species are treated as cold. Only the positive potential solitons are found in this case. When the thermal effects of the lighter ion species are included, in addition to the usual ion-acoustic solitons occurring at M?>?1 (where the Mach number, M, is defined as the ratio of the speed of the solitary wave and the ion-acoustic speed considering temperature of hot electrons and mass of the heavier ion species), slow ion-acoustic solitons/double layers are found to occur at low Mach number (M?normalized number density of lighter ion species tends to 1 (i.e., no heavier species). An interesting property of the new slow ion-acoustic mode is that at low number density of the lighter ion species, only negative potential solitons/double layers are found whereas for increasing densities there is a transition first to positive solitons/double layers, and then only positive solitons. The model can be easily applicable to the dusty plasmas having positively charged dust grains by replacing the heavier ion species by the dust mass and doing a simple normalization to take account of the dust charge.

Lakhina, G. S., E-mail: gslakhina@gmail.com; Singh, S. V., E-mail: satyavir@iigs.iigm.res.in; Kakad, A. P., E-mail: amar@iigs.iigm.res.in [Indian Institute of Geomagnetism, New Panvel (W), Navi Mumbai 410218 (India)

2014-06-15T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Electrostatic mode associated with the pinch velocity in reversed field pinch simulations  

SciTech Connect (OSTI)

The existence of a new phenomenon in reversed field pinch (RFP) simulations related to the equilibrium pinch flow is discussed. This behavior is due to the inward equilibrium flow, but is strongly affected by boundary conditions on the perturbed azimuthal flow. It is important to understand and control this mechanism in single helicity simulations of RFPs. This mechanism can be explained in terms of an electrostatic instability related to a mode which can occur in fluid dynamics. In a simple linear model, it is shown that the mode, which is related to the inward advection of angular momentum from the edge, can be stabilized by using homogeneous Dirichlet (no-slip) boundary conditions at the wall. Behavior due to this mode is present in nonlinear simulations with zero-viscous-stress boundary conditions on the tangential velocity at the wall and, even in the presence of the usual magnetohydrodynamic modes, this mode can dominate the nonlinear dynamics of the velocity. In nonlinear simulations with Dirichlet boundary conditions on the tangential velocity, behavior associated with this electrostatic mode is not observed.

Delzanno, Gian Luca [Los Alamos National Laboratory (LANL); Chacon, Luis [Oak Ridge National Laboratory (ORNL); Finn, John M. [Los Alamos National Laboratory (LANL)

2008-01-01T23:59:59.000Z

262

Electrostatic mode associated with the pinch velocity in reversed field pinch simulations  

SciTech Connect (OSTI)

The existence of a new phenomenon in reversed field pinch (RFP) simulations related to the equilibrium pinch flow is discussed. This behavior is due to the inward equilibrium flow, but is strongly affected by boundary conditions on the perturbed azimuthal flow. It is important to understand and control this mechanism in single helicity simulations of RFPs. This mechanism can be explained in terms of an electrostatic instability related to a mode which can occur in fluid dynamics. In a simple linear model, it is shown that the mode, which is related to the inward advection of angular momentum from the edge, can be stabilized by using homogeneous Dirichlet (no-slip) boundary conditions at the wall. Behavior due to this mode is present in nonlinear simulations with zero-viscous-stress boundary conditions on the tangential velocity at the wall and, even in the presence of the usual magnetohydrodynamic modes, this mode can dominate the nonlinear dynamics of the velocity. In nonlinear simulations with Dirichlet boundary conditions on the tangential velocity, behavior associated with this electrostatic mode is not observed.

Delzanno, Gian Luca; Finn, John M. [T-15 Plasma Theory Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Chacon, Luis [T-15 Plasma Theory Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Fusion Energy Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830 (United States)

2008-12-15T23:59:59.000Z

263

MULTI-POLLUTANT CONTROL USING MEMBRANE--BASED UP-FLOW WET ELECTROSTATIC PRECIPITATION  

SciTech Connect (OSTI)

This is the Final Report of the ''Multi-Pollutant Control Using Membrane-Based Up-flow Wet Electrostatic Precipitation'' project funded by the US Department of Energy's National Energy Technology Laboratory under DOE Award No. DE-FC26-02NT41592 to Croll-Reynolds Clean Air Technologies (CRCAT). In this 18 month project, CRCAT and its team members conducted detailed emission tests of metallic and new membrane collection material within a wet electrostatic precipitator (WESP) at First Energy's Penn Power's Bruce Mansfield (BMP) plant in Shippingport, Pa. The Membrane WESP was designed to be as similar as the metallic WESP in terms of collection area, air-flow, and electrical characteristics. Both units are two-field units. The membrane unit was installed during the 2nd and 3rd quarters of 2003. Testing of the metallic unit was performed to create a baseline since the Mansfield plant had installed selective catalytic reduction equipment for NOx control and a sodium bisulfate injection system for SO3 control during the spring of 2003. Tests results on the metallic WESP were consistent with previous testing for PM2.5, SO3 mist and mercury. Testing on the membrane WESP demonstrated no adverse impact and equivalent removal efficiencies as that of the metallic WESP. Testing on both units was performed at 8,000 acfm and 15,000 acfm. Summary results are shown.

James Reynolds

2004-10-29T23:59:59.000Z

264

Ortho-positronium observation in the Double Chooz Experiment  

E-Print Network [OSTI]

The Double Chooz experiment measures the neutrino mixing angle $\\theta_{13}$ by detecting reactor $\\bar{\

Y. Abe; J. C. dos Anjos; J. C. Barriere; E. Baussan; I. Bekman; M. Bergevin; T. J. C. Bezerra; L. Bezrukov; E. Blucher; C. Buck; J. Busenitz; A. Cabrera; E. Caden; L. Camilleri; R. Carr; M. Cerrada; P. -J. Chang; E. Chauveau; P. Chimenti; A. P. Collin; E. Conover; J. M. Conrad; J. I. Crespo-Anadon; K. Crum; A. S. Cucoanes; E. Damon; J. V. Dawson; J. Dhooghe; D. Dietrich; Z. Djurcic; M. Dracos; M. Elnimr; A. Etenko; M. Fallot; F. von Feilitzsch; J. Felde; S. M. Fernandes; V. Fischer; D. Franco; M. Franke; H. Furuta; I. Gil-Botella; L. Giot; M. Goger-Neff; L. F. G. Gonzalez; L. Goodenough; M. C. Goodman; C. Grant; N. Haag; T. Hara; J. Haser; M. Hofmann; G. A. Horton-Smith; A. Hourlier; M. Ishitsuka; J. Jochum; C. Jollet; F. Kaether; L. N. Kalousis; Y. Kamyshkov; D. M. Kaplan; T. Kawasaki; E. Kemp; H. de Kerret; D. Kryn; M. Kuze; T. Lachenmaier; C. E. Lane; T. Lasserre; A. Letourneau; D. Lhuillier; H. P. Lima Jr; M. Lindner; J. M. Lopez-Castano; J. M. LoSecco; B. Lubsandorzhiev; S. Lucht; J. Maeda; C. Mariani; J. Maricic; J. Martino; T. Matsubara; G. Mention; A. Meregaglia; T. Miletic; R. Milincic; A. Minotti; Y. Nagasaka; Y. Nikitenko; P. Novella; L. Oberauer; M. Obolensky; A. Onillon; A. Osborn; C. Palomares; I. M. Pepe; S. Perasso; P. Pfahler; A. Porta; G. Pronost; J. Reichenbacher; B. Reinhold; M. Rohling; R. Roncin; S. Roth; B. Rybolt; Y. Sakamoto; R. Santorelli; A. C. Schilithz; S. Schonert; S. Schoppmann; M. H. Shaevitz; R. Sharankova; S. Shimojima; D. Shrestha; V. Sibille; V. Sinev; M. Skorokhvatov; E. Smith; J. Spitz; A. Stahl; I. Stancu; L. F. F. Stokes; M. Strait; A. Stuken; F. Suekane; S. Sukhotin; T. Sumiyoshi; Y. Sun; R. Svoboda; K. Terao; A. Tonazzo; H. H. Trinh Thi; G. Valdiviesso; N. Vassilopoulos; C. Veyssiere; M. Vivier; S. Wagner; N. Walsh; H. Watanabe; C. Wiebusch; L. Winslow; M. Wurm; G. Yang; F. Yermia; V. Zimmer

2014-10-07T23:59:59.000Z

265

Computer code for double beta decay QRPA based calculations  

E-Print Network [OSTI]

. The Enriched Xenon Observatory for neutrinoless double beta decay (EXO) will search for the rare decays

Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University

266

Gas-solid transport in a 0. 0508 m pipe at various inclinations with and without electrostatics  

SciTech Connect (OSTI)

The transport of solid particles by air through a 0.0508 m pipe was studied in vertical, horizontal, and 45/sup 0/ orientations. Through control of the air humidity, the effects of electrostatic charging was observed. Pressure drop and particle velocities were measured. Particles used included 79 ..mu..m, 125 ..mu..m, and 450 ..mu..m glass beads and 128 ..mu..m Plexiglas beads. Analysis of particle velocity, pressure drop fluctuation, electrostatic pressure drop, choking and saltation was performed. Visual observations of the flow patterns and behavior were made. A linear stability analysis for the three orientations was performed.

Myler, C.A.; Zaltash, A.; Klinzing, G.E.

1985-01-01T23:59:59.000Z

267

Neutrinoless Double Beta Decay and CP Violation  

E-Print Network [OSTI]

We study the relation between the Majorana neutrino mass matrices and the neutrinoless double beta decay when CP is not conserved. We give an explicit form of the decay rate in terms of a rephasing invariant quantity and demonstrate that in the presence of CP violation it is impossible to have vanishing neutrinoless double beta decay in the case of two neutrino generations (or when the third generation leptons do not mix with other leptons and hence decouple). UTPT-93-12 In the literature the relation between the Majorana neutrino mass matrices and the neutrinoless double beta decay has been studied extensively [1]. If the electron neutrino is a Majorana particle or a pseudo-Dirac particle (i.e., the symmetry of the mass matrix is not the symmetry of the weak interaction), then they can contribute to neutrinoless double beta decay, while if it is a Dirac particle then there is no neutrinoless double beta decay. A Dirac particle can be viewed as a combination of two Majorana particles

Patrick J. O’donnell; Utpal Sarkar

1993-01-01T23:59:59.000Z

268

The search for neutrinoless double beta decay  

E-Print Network [OSTI]

In the last two decades the search for neutrinoless double beta decay has evolved into one of the highest priorities for understanding neutrinos and the origin of mass. The main reason for this paradigm shift has been the discovery of neutrino oscillations, which clearly established the existence of massive neutrinos. An additional motivation for conducting such searches comes from the existence of an unconfirmed, but not refuted, claim of evidence for neutrinoless double decay in $^{76}\\text{Ge}$. As a consequence, a new generation of experiments, employing different detection techniques and $\\beta\\beta$ isotopes, is being actively promoted by experimental groups across the world. In addition, nuclear theorists are making remarkable progress in the calculation of the neutrinoless double beta decay nuclear matrix elements, thus eliminating a substantial part of the theoretical uncertainties affecting the particle physics interpretation of this process. In this report, we review the main aspects of the double beta decay process and some of the most relevant experiments. The picture that emerges is one where searching for neutrinoless double beta decay is recognized to have both far-reaching theoretical implications and promising prospects for experimental observation in the near future.

J. J. Gomez-Cadenas; J. Martin-Albo; M. Mezzetto; F. Monrabal; M. Sorel

2012-01-16T23:59:59.000Z

269

Computing Instantaneous Frequency by normalizing Hilbert Transform  

DOE Patents [OSTI]

This invention presents Normalized Amplitude Hilbert Transform (NAHT) and Normalized Hilbert Transform(NHT), both of which are new methods for computing Instantaneous Frequency. This method is designed specifically to circumvent the limitation set by the Bedorsian and Nuttal Theorems, and to provide a sharp local measure of error when the quadrature and the Hilbert Transform do not agree. Motivation for this method is that straightforward application of the Hilbert Transform followed by taking the derivative of the phase-angle as the Instantaneous Frequency (IF) leads to a common mistake made up to this date. In order to make the Hilbert Transform method work, the data has to obey certain restrictions.

Huang, Norden E.

2005-05-31T23:59:59.000Z

270

Majorana Neutrinos, Neutrino Mass Spectrum and the || ~ 0.001 eV Frontier in Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

If future neutrino oscillation experiments show that the neutrino mass spectrum is with normal ordering, m1 | > 0.01 eV give negative results, the next frontier in the quest for neutrinoless double beta-decay will correspond to || ~ 0.001 eV. Assuming that massive neutrinos are Majorana particles and their exchange is the dominant mechanism generating neutrinoless double beta-decay, we analise the conditions under which ||, in the case of three neutrino mixing and neutrino mass spectrum with normal ordering, would satisfy || > 0.001 eV. We consider the specific cases of i) normal hierarchical neutrino mass spectrum, ii) of relatively small value of the CHOOZ angle theta13 as well as iii) the general case of spectrum with normal ordering, partial hierarchy and a value of theta13 close to the existing upper limit. We study the ranges of the lightest neutrino mass m1 and/or of sin^2 theta13, for which ||> 0.001 eV and discuss the phenomenological implications of such scenarios. We provide also an estimate of || when the three neutrino masses and the neutrino mixing originate from neutrino mass term of Majorana type for the (left-handed) flavour neutrinos and m1 Ue1^2 + m2 U_e2^2 + m3 Ue3^2 =0, but there does not exist a symmetry which forbids the neutrinoless double beta-decay.

S. Pascoli; S. T. Petcov

2007-11-30T23:59:59.000Z

271

Phenomenology of neutrinoless double beta decay  

E-Print Network [OSTI]

Neutrinoless double beta decay violates lepton number by two units, a positive observation therefore necessarily implies physics beyond the standard model. Here, three possible contributions to neutrinoless double beta decay are briefly reviewed: (a) The mass mechanism and its connection to neutrino oscillations; (b) Left-right symmetric models and the lower limit on the right-handed W boson mass; and (c) R-parity violating supersymmetry. In addition, the recently published ``extended black box'' theorem is briefly discussed. Combined with data from oscillation experiments this theorem provides proof that the neutrinoless double beta decay amplitude must receive a non-zero contribution from the mass mechanism, if neutrinos are indeed Majorana particles.

M. Hirsch

2006-09-15T23:59:59.000Z

272

Double hadron leptoproduction in the nuclear medium  

E-Print Network [OSTI]

First measurement of double-hadron production in deep-inelastic scattering has been measured with the HERMES spectrometer at HERA using a 27.6 GeV positron beam with deuterium, nitrogen, krypton and xenon targets. The influence of the nuclear medium on the ratio of double-hadron to single-hadron yields has been investigated. Nuclear effects are clearly observed but with substantially smaller magnitude and reduced $A$-dependence compared to previously measured single-hadron multiplicity ratios. The data are in fair agreement with models based on partonic or pre-hadronic energy loss, while they seem to rule out a pure absorptive treatment of the final state interactions. Thus, the double-hadron ratio provides an additional tool for studying modifications of hadronization in nuclear matter.

Airapetian, A; Akopov, Z; Amarian, M; Andrus, A; Aschenauer, E C; Augustyniak, W; Avakian, R; Avetisian, A; Avetissian, E; Bailey, P; Belostotskii, S; Bianchi, N; Blok, H P; Böttcher, Helmut B; Borisov, A; Borysenko, A; Brüll, A; Bryzgalov, V; Capiluppi, M; Capitani, G P; Ciullo, G; Contalbrigo, M; Dalpiaz, P F; Deconinck, W; De Leo, R; Demey, M; De Nardo, L; De Sanctis, E; Devitsin, E G; Diefenthaler, M; Di Nezza, P; Dreschler, J; Düren, M; Ehrenfried, M; Elalaoui-Moulay, A; Elbakian, G; Ellinghaus, F; Elschenbroich, U; Fabbri, R; Fantoni, A; Felawka, L; Frullani, S; Funel, A; Gapienko, G; Gapienko, V; Garibaldi, F; Garrow, K; Gavrilov, G; Karibian, V; Giordano, F; Grebenyuk, O; Gregor, I M; Griffioen, K; Guler, H; Hadjidakis, C; Hartig, M; Hasch, D; Hasegawa, T; Hesselink, W H A; Hillenbrand, A; Hoek, M; Holler, Y; Hommez, B; Hristova, I; Iarygin, G; Ivanilov, A; Izotov, A; Jackson, H E; Jgoun, A; Kaiser, R; Keri, T; Kinney, E; Kiselev, A; Kobayashi, T; Kopytin, M; Korotkov, V; Kozlov, V; Krauss, B; Kravchenko, P; Krivokhizhin, V G; Lagamba, L; Lapikas, L; Lenisa, P; Liebing, P; Linden-Levy, L A; Lorenzon, W; Lü, J; Lu, S; Ma, B Q; Maiheu, B; Makins, N C R; Mao, Y; Marianski, B; Marukyan, H; Masoli, F; Mexner, V; Meyners, N; Michler, T; Miklukho, O; Miller, C A; Miyachi, Y; Muccifora, V; Murray, M; Nagaitsev, A; Nappi, E; Naryshkin, Yu; Negodaev, M; Nowak, Wolf-Dieter; Ohsuga, H; Osborne, A; Perez-Benito, R; Pickert, N; Raithel, M; Reggiani, D; Reimer, P E; Reischl, A; Reolon, A R; Riedl, C; Rith, K; Rosner, G; Rostomyan, A; Rubacek, L; Rubin, J; Ryckbosch, D; Salomatin, Y; Sanjiev, I; Savin, I; Schäfer, A; Schnell, G; Schüler, K P; Seele, J; Seidl, R; Seitz, B; Shearer, C; Shibata, T A; Shutov, V; Sinram, K; Stancari, M; Statera, M; Steffens, E; Steijger, J J M; Stenzel, H; Stewart, J; Stinzing, F; Streit, J; Tait, P; Tanaka, H; Taroian, S P; Tchuiko, B; Terkulov, A R; Trzcinski, A; Tytgat, M; Vandenbroucke, A; Van der Nat, P B; van der Steenhoven, G; Van Haarlem, Y; Veretennikov, D; Vikhrov, V; Vogel, C; Wang, S; Ye, Y; Ye, Z; Yen, S; Zihlmann, B; Zupranski, P

2006-01-01T23:59:59.000Z

273

Precision Muon Reconstruction in Double Chooz  

E-Print Network [OSTI]

We describe a muon track reconstruction algorithm for the reactor anti-neutrino experiment Double Chooz. The Double Chooz detector consists of two optically isolated volumes of liquid scintillator viewed by PMTs, and an Outer Veto above these made of crossed scintillator strips. Muons are reconstructed by their Outer Veto hit positions along with timing information from the other two detector volumes. All muons are fit under the hypothesis that they are through-going and ultrarelativistic. If the energy depositions suggest that the muon may have stopped, the reconstruction fits also for this hypothesis and chooses between the two via the relative goodness-of-fit. In the ideal case of a through-going muon intersecting the center of the detector, the resolution is ~40 mm in each transverse dimension. High quality muon reconstruction is an important tool for reducing the impact of the cosmogenic isotope background in Double Chooz.

Double Chooz collaboration; Y. Abe; J. C. dos Anjos; J. C. Barriere; E. Baussan; I. Bekman; M. Bergevin; T. J. C. Bezerra; L. Bezrukov; E. Blucher; C. Buck; J. Busenitz; A. Cabrera; E. Caden; L. Camilleri; R. Carr; M. Cerrada; P. -J. Chang; E. Chauveau; P. Chimenti; A. P. Collin; E. Conover; J. M. Conrad; J. I. Crespo-Anadón; K. Crum; A. Cucoanes; E. Damon; J. V. Dawson; D. Dietrich; Z. Djurcic; M. Dracos; M. Elnimr; A. Etenko; M. Fallot; F. von Feilitzsch; J. Felde; S. M. Fernandes; V. Fischer; D. Franco; M. Franke; H. Furuta; I. Gil-Botella; L. Giot; M. Göger-Neff; L. F. G. Gonzalez; L. Goodenough; M. C. Goodman; C. Grant; N. Haag; T. Hara; J. Haser; M. Hofmann; G. A. Horton-Smith; A. Hourlier; M. Ishitsuka; J. Jochum; C. Jollet; F. Kaether; L. N. Kalousis; Y. Kamyshkov; D. M. Kaplan; T. Kawasaki; E. Kemp; H. de Kerret; D. Kryn; M. Kuze; T. Lachenmaier; C. E. Lane; T. Lasserre; A. Letourneau; D. Lhuillier; H. P. Lima Jr; M. Lindner; J. M. López-Casta no; J. M. LoSecco; B. Lubsandorzhiev; S. Lucht; J. Maeda; C. Mariani; J. Maricic; J. Martino; T. Matsubara; G. Mention; A. Meregaglia; T. Miletic; R. Milincic; A. Minotti; Y. Nagasaka; Y. Nikitenko; P. Novella; M. Obolensky; L. Oberauer; A. Onillon; A. Osborn; C. Palomares; I. M. Pepe; S. Perasso; P. Pfahler; A. Porta; G. Pronost; J. Reichenbacher; B. Reinhold; M. Röhling; R. Roncin; S. Roth; B. Rybolt; Y. Sakamoto; R. Santorelli; A. C. Schilithz; S. Schönert; S. Schoppmann; M. H. Shaevitz; R. Sharankova; S. Shimojima; V. Sibille; V. Sinev; M. Skorokhvatov; E. Smith; J. Spitz; A. Stahl; I. Stancu; L. F. F. Stokes; M. Strait; A. Stüken; F. Suekane; S. Sukhotin; T. Sumiyoshi; Y. Sun; R. Svoboda; K. Terao; A. Tonazzo; H. H. Trinh Thi; G. Valdiviesso; N. Vassilopoulos; C. Veyssiere; M. Vivier; S. Wagner; H. Watanabe; C. Wiebusch; L. Winslow; M. Wurm; G. Yang; F. Yermia; V. Zimmer

2014-08-15T23:59:59.000Z

274

Recent Results in Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

The search for neutrinoless double beta decay is a rich source for new physics. The observation of this decay will lead to understanding of the absolute mass scale of neutrinos, the Majorana nature of the neutrino (whether the neutrino is its own anti-particle), and lepton number violation. Double beta decay is being investigated around the world by several experiments using different candidate isotopes. There has been much progress made in experimental techniques recently such that achieving sensitivity to neutrino masses at 50 meV and below will be possible in the near future. A summary of recent results in neutrinoless double beta decay is discussed with a look toward the experimental goals for the future.

Lisa J. Kaufman

2013-05-14T23:59:59.000Z

275

On the neutrinoless double ?{sup +}/EC decays  

SciTech Connect (OSTI)

The neutrinoless double positron-emission/electron-capture (0??{sup +}/EC) decays are studied for the magnitudes of the involved nuclear matrix elements (NMEs). Decays to the ground state, 0{sub gs}{sup +}, and excited 0{sup +} states are discussed. The participant many-body wave functions are evaluated in the framework of the quasiparticle random-phase approximation (QRPA). Effective, G-matrix-derived nuclear forces are used in realistic single-particle model spaces. The channels ?{sup +}?{sup +}, ?{sup +}EC, and the resonant neutrinoless double electron capture (R0?ECEC) are discussed.

Suhonen, Jouni [Department of Physics, P.O. Box 35 (YFL), FI-40014 University of Jyväskylä (Finland)

2013-12-30T23:59:59.000Z

276

The double-beta decay: Theoretical challenges  

SciTech Connect (OSTI)

Neutrinoless double beta decay is a unique process that could reveal physics beyond the Standard Model of particle physics namely, if observed, it would prove that neutrinos are Majorana particles. In addition, it could provide information regarding the neutrino masses and their hierarchy, provided that reliable nuclear matrix elements can be obtained. The two neutrino double beta decay is an associate process that is allowed by the Standard Model, and it was observed for about ten nuclei. The present contribution gives a brief review of the theoretical challenges associated with these two process, emphasizing the reliable calculation of the associated nuclear matrix elements.

Horoi, Mihai [Department of Physics, Central Michigan University, Mount Pleasant, Michigan, 48859 (United States)

2012-11-20T23:59:59.000Z

277

Detecting Double Beta Decays Using Nuclear Emulsions  

E-Print Network [OSTI]

Neutrino nature and absolute mass scale are major questions in particle physics which cannot be addressed by the present neutrino oscillation program. To answer these two questions, several neutrinoless double beta decay experiments are underway or planed for the near future. These experiments, mainly use bolometric techniques or gaseous counters coupled with scintillator detectors. The energy resolution is better in bolometric experiments but experiments coupling tracking with calorimetry have the advantage of observing the two electron tracks and remove many background sources. Here, we present a proposal of using nuclear emulsions to observe double beta decays. This technique has the advantage of precise tracking and vertexing even for low energy electrons.

Marcos Dracos

2008-05-20T23:59:59.000Z

278

A Harmonic Approach for Calculating Daily Temperature Normals Constrained by2 Homogenized Monthly Temperature Normals3  

E-Print Network [OSTI]

1 1 A Harmonic Approach for Calculating Daily Temperature Normals Constrained by2 Homogenized a constrained harmonic technique that forces the daily30 temperature normals to be consistent with the monthly, or harmonic even though the annual march of temperatures for some locations can be highly asymmetric. Here, we

279

How and why electrostatic charge of combustible nanoparticles can radically change the mechanism and rate of their oxidation in humid atmosphere  

E-Print Network [OSTI]

Electrostatically charged aerosol nanoparticles strongly attract surrounding polar gas molecules due to a charge-dipole interaction. In humid air, the substantial electrostatic attraction and acceleration of surrounding water vapour molecules towards charged combustible nanoparticles cause intense electrostatic hydration and preferential oxidation of these nanoparticles by accelerated water vapor molecules rather than non-polar oxygen molecules. In particular, electrostatic acceleration, acquired by surrounding water vapour molecules at a distance of their mean free path from the minimally charged iron metal nanoparticle can increase an oxidative activity of these polar molecules with respect to the nanoparticle by a factor of one million. Intense electrostatic hydration of charged metal nanoparticles converts the nanoparticle's oxide based shells into the hydroxide based electrolyte shells, transforming these nanoparticles into metal/air core-shell nanobatteries, periodically short-circuited by intra-particl...

Meshcheryakov, Oleg

2010-01-01T23:59:59.000Z

280

A particle-in-cell approach to obliquely propagating electrostatic waves  

SciTech Connect (OSTI)

The electron-acoustic and beam-driven modes associated with electron beams have previously been identified and studied numerically. These modes are associated with Broadband Electrostatic Noise found in the Earth's auroral and polar cusp regions. Using a 1-D spatial Particle-in-Cell simulation, the electron-acoustic instability is studied for a magnetized plasma, which includes cool ions, cool electrons and a hot, drifting electron beam. Both the weakly and strongly magnetized regimes with varying wave propagation angle, ?, with respect to the magnetic field are studied. The amplitude and frequency of the electron-acoustic mode are found to decrease with increasing ?. The amplitude of the electron-acoustic mode is found to significantly grow at intermediate wavenumber ranges. It reaches a saturation level at the point, where a plateau forms in the hot electron velocity distribution after which the amplitude of the electron-acoustic mode decays.

Koen, Etienne J. [Space Commercial Services Holdings (SCSH) Group, Somerset West (South Africa); School of Electrical Engineering, Royal Institute of Technology (KTH), Stockholm (Sweden); South African National Space Agency (SANSA), Space Science, Hermanus (South Africa); Collier, Andrew B. [University of KwaZulu-Natal, Durban (South Africa); Exegetic Analytics, Durban (South Africa); Maharaj, Shimul K. [South African National Space Agency (SANSA), Space Science, Hermanus (South Africa)

2014-09-15T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


281

Electrostatic-precipitator efficiency on a multiple-hearth incinerator burning sewage sludge  

SciTech Connect (OSTI)

A pilot-scale electrostatic precipitator (ESP) was evaluated for its removal performance of 23 metals and for sulfur-containing particles when fitted to a multiple hearth incinerator burning sewage sludge. The small-scale ESP was installed to take a slipstream of about 3% of the total incinerator emissions. Particle size fractions were collected from the gas streams entering and leaving the ESP. Each particle was evaluated for overall removal efficiency, size-fraction removal efficiency, and selective removal of specific metals. Total concentrations of each element in the controlled emission stream was determined as well as the proportionate concentration of species in the solid and volatile states. Concentrations of each metal in the emission stream were compared with the concentration in the sludge residue. To obtain comparisons of ESP performance with a more typical emission-control device, the performance of the incinerator's full-scale wet scrubber was also evaluated.

Adams, R.C.; Bockol, G.; Maddox, J.A.; Robb, E.V.

1987-09-01T23:59:59.000Z

282

Electrostatic precipitation of condensed acid mist: Third quarterly technical progress report, March 1--May 31, 1989  

SciTech Connect (OSTI)

Acid mists can sometimes constitute a significant portion of the total particulate emissions from power plants burning high-sulfur coals. A wet electrostatic precipitator (WESP) is the best control option for acid mist. The mist would blind a fabric filter and attack glass fiber fabrics. A wet ESP is required because the acid would quickly corrode the plates in a conventional dry ESP. The wet ESP also offers the advantages of no rapping reentrainment and no sensitivity to fly ash resistivity. The project is organized in two phases. Phase I, which is scheduled for September 1988 to September 1989, involves the WESP fabrication, laboratory and pilot combustor testing, and computer modeling. Phase II, which is scheduled for September 1989 to September 1990, involves the solicitation of a utility demonstration site, preliminary site measurements, and planning for the demonstration test program. Progress on Phase I work is addressed in this discussion. 5 refs., 4 figs.

Not Available

1989-01-01T23:59:59.000Z

283

Study on space charge effect in an electrostatic ion analyzer applied to measure laser produced ions  

SciTech Connect (OSTI)

The abundance of different ions produced by laser ion sources is usually analyzed by an electrostatic ion analyzer (EIA). Ion current intensities in the range of several mA/cm{sup 2} at the position of the EIA have been achieved from the laser ion source developed by the Institute of Modern Physics; this indicates that a noticeable influence of space charge effect during the ion transmission will occur. Hence, while the parameters of the EIA or the beams are changed, such as ion species, current intensity, the ions’ transmission efficiency through the EIA is different, which will result in an uncertainty in the estimation of the ions’ yields. Special attention is focused on this issue in this paper. Ion's transmissions through the EIA under different circumstances are studied with simulations and experiments, the results of which are consistent with each other.

Jin, Q. Y.; Li, Zh. M.; Liu, W. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China) [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China); University of Chinese Academy of Sciences, Beijing 100049 (China); Zhao, H. Y., E-mail: zhaohy@impcas.ac.cn; Sha, S.; Zhang, J. J.; Zhang, X. Zh.; Sun, L. T.; Zhao, H. W. [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)] [Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 (China)

2014-03-15T23:59:59.000Z

284

Spherical plasma oscillations in a reversed-polarity inertial-electrostatic confinement device  

SciTech Connect (OSTI)

A pulsed reversed-polarity inertial-electrostatic confinement device has been investigated experimentally using voltage and spectroscopic diagnostics. Large-amplitude oscillations were observed in the floating potential of the plasma immediately following the initiation of the discharge. It is postulated that the observations were the result of coherent ion oscillations within a harmonic potential well formed by a uniform electron density in the center of the device. A simple model of the system predicts the depth of this transient potential well to be approximately 100 V. Observations of the relative occupation of the third and fourth energy levels of hydrogen in the plasma indicated the formation of a Maxwellian electron energy distribution after 20 {mu}s. The results suggest a promising avenue toward a net fusion power gain by utilizing these oscillations to periodically compress and heat the plasma to thermonuclear densities and energies.

Tuft, C.; Khachan, J. [Plasma Physics, School of Physics, University of Sydney, New South Wales 2006 (Australia)

2010-11-15T23:59:59.000Z

285

Spherical ion oscillations in a positive polarity gridded inertial-electrostatic confinement device  

SciTech Connect (OSTI)

A pulsed, positive polarity gridded inertial electrostatic confinement device has been investigated experimentally, using a differential emissive probe and potential traces as primary diagnostics. Large amplitude oscillations in the plasma current and plasma potential were observed within a microsecond of the discharge onset, which are indicative of coherent ion oscillations about a temporarily confined excess of recirculating electron space charge. The magnitude of the depth of the potential well in the established virtual cathode was determined using a differential emissive Langmuir probe, which correlated well to the potential well inferred from the ion oscillation frequency for both hydrogen and argon experiments. It was found that the timescale for ion oscillation dispersion is strongly dependent on the neutral gas density, and weakly dependent on the peak anode voltage. The cessation of the oscillations was found to be due to charge exchange processes converting ions to high velocity neutrals, causing the abrupt de-coherence of the oscillations through an avalanche dispersion in phase space.

Bandara, R.; Khachan, J. [Plasma Physics, School of Physics, University of Sydney, Camperdown, New South Wales 2006 (Australia)] [Plasma Physics, School of Physics, University of Sydney, Camperdown, New South Wales 2006 (Australia)

2013-07-15T23:59:59.000Z

286

Electrostatic potential variation on the flux surface and its impact on impurity transport  

E-Print Network [OSTI]

The particle transport of impurities in magnetically confined plasmas under some conditions does not find, neither quantitatively nor qualitatively, a satisfactory theory-based explanation. This compromise the successful realization of thermo-nuclear fusion for energy production since its accumulation is known to be one of the causes that leads to the plasma breakdown. In standard reactor-relevant conditions this accumulation is in most stellarators intrinsic to the lack of toroidal symmetry, that leads to the neoclassical electric field to point radially inwards. This statement, that the standard theory allows to formulate, has been contradicted by some experiments that showed weaker or no accumulation under such conditions \\cite{Ida_pop_16_056111_2009, Yoshinuma_nf_49_062002_2009}. The charge state of the impurities makes its transport more sensitive to the electric fields. Thus, the short length scale turbulent electrostatic potential or its long wave-length variation on the flux surface $\\Phi_{1}$ -- that...

García-Regaña, J M; Turkin, Y; Kleiber, R; Helander, P; Maaßberg, H; Alonso, J A; Velasco, J L

2015-01-01T23:59:59.000Z

287

Head-on collisions of electrostatic solitons in multi-ion plasmas  

SciTech Connect (OSTI)

Head-on collisions between two electrostatic solitons are dealt with by the Poincare-Lighthill-Kuo method of strained coordinates, for a plasma composed of a number of cold (positive and negative) ion species and Boltzmann electrons. The nonlinear evolution equations for both solitons and their phase shift due to the collision, resulting in time delays, are established. A Korteweg-de Vries description is the generic conclusion, except when the plasma composition is special enough to replace the quadratic by a cubic nonlinearity in the evolution equations, with concomitant repercussions on the phase shifts. Applications include different two-ion plasmas, showing positive or negative polarity solitons in the generic case. At critical composition, a combination of a positive and a negative polarity soliton is possible.

Verheest, Frank [Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B-9000 Gent (Belgium); School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Hellberg, Manfred A. [School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Hereman, Willy A. [Department of Applied Mathematics and Statistics, Colorado School of Mines, Golden, Colorado 80401-1887 (United States)

2012-09-15T23:59:59.000Z

288

Modulational instability of electrostatic acoustic waves in an electron-hole semiconductor quantum plasma  

SciTech Connect (OSTI)

The modulational instability of quantum electrostatic acoustic waves in electron-hole quantum semiconductor plasmas is investigated using the quantum hydrodynamic model, from which a modified nonlinear Schrödinger equation with damping effects is derived using the reductive perturbation method. Here, we consider the combined effects of quantum recoil, quantum degenerate pressures, as well as the exchange-correlation effect standing for the electrons (holes) spin. The modulational instability for different semiconductors (GaAs, GaSb, and InP) is discussed. The collision between electron (hole) and phonon is also investigated. The permitted maximum time for modulational instability and the damping features of quantum envelope solitary wave are all determined by the collision. The approximate solitary solution with damping effects is presented in weak collision limit. The damping properties were discussed by numerical method.

Wang, Yunliang, E-mail: ylwang@ustb.edu.cn; Lü, Xiaoxia [Department of Physics, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083 (China)] [Department of Physics, School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083 (China)

2014-02-15T23:59:59.000Z

289

Design and validation of a high-voltage levitation circuit for electrostatic accelerometers  

SciTech Connect (OSTI)

A simple high-voltage circuit with a voltage range of 0 to 900 V and an open-loop bandwidth of 11 kHz is realized by using an operational amplifier and a MOSFET combination. The circuit is used for the levitation of a test mass of 71 g, suspended below the top-electrodes with a gap distance of 57 ?m, so that the performance of an electrostatic accelerometer can be tested on the ground. The translation noise of the accelerometer, limited by seismic noise, is about 4 × 10{sup ?8} m/s{sup 2}/Hz{sup 1/2} at 0.1 Hz, while the high-voltage coupling noise is one-order of magnitude lower.

Li, G.; Wu, S. C.; Zhou, Z. B.; Bai, Y. Z.; Hu, M.; Luo, J. [MOE Key Laboratory of Fundamental Physical Quantities Measurements, School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China)] [MOE Key Laboratory of Fundamental Physical Quantities Measurements, School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China)

2013-12-15T23:59:59.000Z

290

A unified electrostatic and cavitation model for first-principles molecular dynamics in solution  

E-Print Network [OSTI]

The electrostatic continuum solvent model developed by Fattebert and Gygi is combined with a first-principles formulation of the cavitation energy based on a natural quantum-mechanical definition for the surface of a solute. Despite its simplicity, the cavitation contribution calculated by this approach is found to be in remarkable agreement with that obtained by more complex algorithms relying on a large set of parameters. Our model allows for very efficient Car-Parrinello simulations of finite or extended systems in solution, and demonstrates a level of accuracy as good as that of established quantum-chemistry continuum solvent methods. We apply this approach to the study of tetracyanoethylene dimers in dichloromethane, providing valuable structural and dynamical insights on the dimerization phenomenon.

Damian A. Scherlis; Jean-Luc Fattebert; Francois Gygi; Matteo Cococcioni; Nicola Marzari

2005-10-06T23:59:59.000Z

291

Evaluation of an Electrostatic Dust Removal System with Potential Application in Next-Step Fusion Devices  

SciTech Connect (OSTI)

The ability to manage inventories of carbon, tritium, and high-Z elements in fusion plasmas depends on means for effective dust removal. A dust conveyor, based on a moving electrostatic potential well, was tested with particles of tungsten, carbon, glass and sand. A digital microscope imaged a representative portion of the conveyor, and dust particle size and volume distributions were derived before and after operation. About 10 mm3 volume of carbon and tungsten particles were moved in under 5 seconds. The highest driving amplitude tested of 3 kV was the most effective. The optimal driving frequency was 210 Hz (maximum tested) for tungsten particles, decreasing to below 60 Hz for the larger sand particles. Measurements of particle size and volume distributions after 10 and 100 cycles show the breaking apart of agglomerated carbon, and the change in particle distribution over short timescales (<1 s).

Friesen, F. QL. [Grinnell College, 1115 8th Avenue, Grinnell, IA 50112-1616

2011-01-20T23:59:59.000Z

292

High efficiency photodetectors fabricated by electrostatic layer-by-layer self-assembly of CdTe quantum dots  

E-Print Network [OSTI]

High efficiency photodetectors fabricated by electrostatic layer-by-layer self-assembly of CdTe 20 October 2008 We demonstrate high-performance photodetectors from multilayers of CdTe quantum dots. The synthesis of CdTe QDs in aqueous solution using cadmium perchlorate hydrate and Al2Te3 was previously re

Lin, Lih Y.

293

Upgrade of the MIT Linear Electrostatic Ion Accelerator (LEIA) for nuclear diagnostics development for Omega, Z and the NIF  

E-Print Network [OSTI]

Accelerator (LEIA) generates DD and D3 He fusion products for the development of nuclear diagnostics for OmegaUpgrade of the MIT Linear Electrostatic Ion Accelerator (LEIA) for nuclear diagnostics development Graaff accelerator terminal Rev. Sci. Instrum. 83, 02A340 (2012) Status of ion sources at National

294

Excitation and propagation of Electrostatic Ion Cyclotron waves in rf-sustained plasmas of interest to propulsion research  

E-Print Network [OSTI]

it is thus necessary to heat these ions considerably. Various types of electrodeless plasma heating provideExcitation and propagation of Electrostatic Ion Cyclotron waves in rf-sustained plasmas of interest to propulsion research Rostislav Spektor and Edgar Y. Choueiri Electric Propulsion and Plasma Dynamics

Choueiri, Edgar

295

Type of presentation: Oral IT-11-O-1669 Electrostatic potential of single-layer graphene measured using  

E-Print Network [OSTI]

Type of presentation: Oral IT-11-O-1669 Electrostatic potential of single-layer graphene measured, University of Limerick, Ireland 3 Email of the presenting author: shery.chang@fz-juelich.de Graphene devices, energy storage, and electrocatalysis [2]. Characterisation of graphene imposes a requirement

Dunin-Borkowski, Rafal E.

296

Droplet Dynamics Changes in Electrostatic Sprays of Methanol-Water Mixtures Zohra Olumee, John H. Callahan, and Akos Vertes*,  

E-Print Network [OSTI]

conductivity, dielectric constant, surface tension, viscosity, and density) and on the spraying conditionsDroplet Dynamics Changes in Electrostatic Sprays of Methanol-Water Mixtures Zohra Olumee, John H generated from methanol-water mixtures. We investigated spraying conditions close to those of electrospray

Vertes, Akos

297

Integrated low emission cleanup system for direct coal-fueled turbines (electrostatic agglomeration). Draft final technical report  

SciTech Connect (OSTI)

The objective of this contract was to investigate the removal of SO{sub x} and particulate matter from direct coal fired combustion gas streams at high temperature and high pressure conditions. This investigation was to be accomplished through a bench scale testing and evaluation program for SO{sub x} removal and the innovative particulate collection concept of particulate growth through electrostatic agglomeration followed by high efficiency mechanical collection. The process goal was to achieve control better than that required by 1979 New Source Performance Standards. During Phase I, the designs of the combustor and gas cleanup apparatus were successfully completed. Hot gas cleanup was designed to be accomplished at temperature levels between 1800{degrees} and 2500{degrees}F at pressures up to 15 atmospheres. The combustor gas flow rate could be varied between 0.2--0.5 pounds per second. The electrostatic agglomerator residence time could be varied between 0.25 to 3 seconds. In Phase II, all components were fabricated, and erected successfully. Test data from shakedown testing was obtained. Unpredictable difficulties in pilot plant erection and shakedown consumed more budget resources than was estimated and as a consequence DOE, METC, decided ft was best to complete the contract at the end of Phase II. Parameters studied in shakedown testing revealed that high-temperature high pressure electrostatics offers an alternative to barrier filtration in hot gas cleanup but more research is needed in successful system integration between the combustor and electrostatic agglomerator.

Quimby, J.M.; Kumar, K.S.

1992-12-31T23:59:59.000Z

298

Multi-dimensional modelling of electrostatic force distance curve over dielectric surface: Influence of tip geometry and correlation with experiment  

SciTech Connect (OSTI)

Electric Force-Distance Curves (EFDC) is one of the ways whereby electrical charges trapped at the surface of dielectric materials can be probed. To reach a quantitative analysis of stored charge quantities, measurements using an Atomic Force Microscope (AFM) must go with an appropriate simulation of electrostatic forces at play in the method. This is the objective of this work, where simulation results for the electrostatic force between an AFM sensor and the dielectric surface are presented for different bias voltages on the tip. The aim is to analyse force-distance curves modification induced by electrostatic charges. The sensor is composed by a cantilever supporting a pyramidal tip terminated by a spherical apex. The contribution to force from cantilever is neglected here. A model of force curve has been developed using the Finite Volume Method. The scheme is based on the Polynomial Reconstruction Operator—PRO-scheme. First results of the computation of electrostatic force for different tip–sample distances (from 0 to 600?nm) and for different DC voltages applied to the tip (6 to 20?V) are shown and compared with experimental data in order to validate our approach.

Boularas, A., E-mail: boularas@laplace.univ-tlse.fr; Baudoin, F.; Villeneuve-Faure, C. [LAPLACE (Laboratoire Plasma et Conversion d'Energie), Université de Toulouse, UPS, INPT, 118 route de Narbonne, 31062 Toulouse cedex 9 (France); Clain, S. [Universidade do Minho, Centro de Matemática, Campus de Gualtar, 4710 - 057 Braga (Portugal); Université Paul Sabatier, Institut de Mathématiques de Toulouse, 31062 Toulouse (France); Teyssedre, G. [LAPLACE (Laboratoire Plasma et Conversion d'Energie), Université de Toulouse, UPS, INPT, 118 route de Narbonne, 31062 Toulouse cedex 9 (France); CNRS, LAPLACE, F-31071 Toulouse (France)

2014-08-28T23:59:59.000Z

299

Double layer capacitor prospects look good  

SciTech Connect (OSTI)

The Fourth International Seminar in Double Layer Capacitors and similar energy devices has been sponsored again by Dr. S.P. Wolsky and Dr. Nikola Marincic. The seminar was held in December 1994, at Deerfield Beach, FL. This report provides a brief description of information on supercapacitors.

NONE

1995-07-01T23:59:59.000Z

300

Double tracks test site characterization report  

SciTech Connect (OSTI)

This report presents the results of site characterization activities performed at the Double Tracks Test Site, located on Range 71 North, of the Nellis Air Force Range (NAFR) in southern Nevada. Site characterization activities included reviewing historical data from the Double Tracks experiment, previous site investigation efforts, and recent site characterization data. The most recent site characterization activities were conducted in support of an interim corrective action to remediate the Double Tracks Test Site to an acceptable risk to human health and the environment. Site characterization was performed using a phased approach. First, previously collected data and historical records sere compiled and reviewed. Generalized scopes of work were then prepared to fill known data gaps. Field activities were conducted and the collected data were then reviewed to determine whether data gaps were filled and whether other areas needed to be investigated. Additional field efforts were then conducted, as required, to adequately characterize the site. Characterization of the Double Tracks Test Site was conducted in accordance with the US Department of Energy`s (DOE) Streamlined Approach for Environmental Restoration (SAFER).

NONE

1996-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Neutrinoless double beta decay in seesaw models  

E-Print Network [OSTI]

We study the general phenomenology of neutrinoless double beta decay in seesaw models. In particular, we focus on the dependence of the neutrinoless double beta decay rate on the mass of the extra states introduced to account for the Majorana masses of light neutrinos. For this purpose, we compute the nuclear matrix elements as functions of the mass of the mediating fermions and estimate the associated uncertainties. We then discuss what can be inferred on the seesaw model parameters in the different mass regimes and clarify how the contribution of the light neutrinos should always be taken into account when deriving bounds on the extra parameters. Conversely, the extra states can also have a significant impact, cancelling the Standard Model neutrino contribution for masses lighter than the nuclear scale and leading to vanishing neutrinoless double beta decay amplitudes even if neutrinos are Majorana particles. We also discuss how seesaw models could reconcile large rates of neutrinoless double beta decay with more stringent cosmological bounds on neutrino masses.

Mattias Blennow; Enrique Fernandez-Martinez; Jacobo Lopez-Pavon; Javier Menendez

2014-05-12T23:59:59.000Z

302

Neutrinoless Double $?$-Decay: Status and Future  

E-Print Network [OSTI]

A brief summary of the status of neutrino masses, mixing and oscillations is presented. Neutrinoless double $\\beta$-decay is considered. Predictions for the effective Majorana mass are reviewed. A possible test of the calculations of nuclear matrix elements of the $0\

S. M. Bilenky

2005-09-11T23:59:59.000Z

303

Guidance on Utility Rate Estimations and Weather Normalization...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

and Weather Normalization in an ESPC Document explains how to use estimated energy rates and normalized weather data in determining an energy service company's (ESCO's)...

304

Design of a lens table for a double toroidal electron spectrometer  

SciTech Connect (OSTI)

We report here on the method we developed to build a lens table for a four-element electrostatic transfer lens operated together with a double toroidal electron energy analyzer designed by one of us, and whose original design and further improvements are described in detail in Miron et al. [Rev. Sci. Instrum. 68, 3728 (1997)] and Le Guen et al. [Rev. Sci. Instrum. 73, 3885 (2002)]. Both computer simulations and laboratory instrument tuning were performed in order to build this lens table. The obtained result was tested for a broad range of electron kinetic energies and analyzer pass energies. Based on this new lens table, allowing to easily computer control the spectrometer working conditions, we could routinely achieve an electron energy resolution ranging between 0.6% and 0.8% of the analyzer pass energy, while the electron count rate was also significantly improved. The establishment of such a lens table is of high importance to relieve experimentalists from the tedious laboring of the lens optimization, which was previously necessary prior to any measurement. The described method can be adapted to any type of electron/ion energy analyzer, and will thus be interesting for all experimentalists who own, or plan to build or improve their charged particle energy analyzers.

Liu Xiaojng; Nicolas, Christophe; Miron, Catalin [Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex (France)

2013-03-15T23:59:59.000Z

305

ARM - Measurement - Shortwave broadband direct normal irradiance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc Documentation RUC : XDCResearch Relatedcontent ARMnumberDoppler ARMdiffusedirect normal

306

Many-body correlations of quasiparticle random-phase approximation in nuclear matrix element of neutrinoless double-beta decay  

E-Print Network [OSTI]

We show that the correlations of the quasiparticle random-phase approximation (QRPA) significantly reduce the nuclear matrix element (NME) of neutrinoless double-beta decay by a new mechanism in the calculation for $^{150}$Nd $\\rightarrow$ $^{150}$Sm. This effect is due mainly to the normalization factors of the QRPA ground states included in the overlap of intermediate states, to which the QRPA states based on the initial and final ground states are applied. These normalization factors arise according to the definition of the QRPA ground state as the vacuum of quasibosons. Our NME is close to those of other groups in spite of this new reduction effect because we do not use the proton-neutron pairing interaction usually used for reproducing the experimental NME of the two-neutrino double-beta ($2\

J. Terasaki

2015-01-19T23:59:59.000Z

307

Abstract --This paper deals a double layer and a single layer Flux-Switching Permanent Magnet (FSPM) motors for a fault  

E-Print Network [OSTI]

Abstract --This paper deals a double layer and a single layer Flux-Switching Permanent Magnet (FSPM-Switching Permanent Magnet (FSPM) motors attract more and more attentions in the critical application as the Hybrid and will disturb the normal phases because of the magnetic coupling between phases. In order to compare the fault

Paris-Sud XI, Université de

308

Progress Towards Doubling the Beam Power at Fermilab's Accelerator Complex  

SciTech Connect (OSTI)

After a 14 month shutdown accelerator modifications and upgrades are in place to allow us doubling of the Main Injector beam power. We will discuss the past MI high power operation and the current progress towards doubling the power.

Kourbanis, ioanis

2014-06-01T23:59:59.000Z

309

Sensitivity of CUORE to Neutrinoless Double-Beta Decay  

E-Print Network [OSTI]

Sensitivity of CUORE to Neutrinoless Double-Beta Decay b c,:Results of the Search for Neutrinoless D o u b l e - B e t ah e i n a , Evidence for neutrinoless double beta decay, M o

Alessandria, F.

2013-01-01T23:59:59.000Z

310

Neutrinoless Double Beta Decay and Physics Beyond the Standard Model  

E-Print Network [OSTI]

Neutrinoless double beta decay is the most powerful tool to probe not only for Majorana neutrino masses but for lepton number violating physics in general. We discuss relations between lepton number violation, double beta decay and neutrino mass, review a general Lorentz invariant parametrization of the double beta decay rate, highlight a number of different new physics models showing how different mechanisms can trigger double beta decay, and finally discuss possibilities to discriminate and test these models and mechanisms in complementary experiments.

Frank F. Deppisch; Martin Hirsch; Heinrich Päs

2012-08-03T23:59:59.000Z

311

/ Search for Neutrinoless Double Beta Decay with CUORE  

E-Print Network [OSTI]

neutrinoless double beta decay (??0?) in 130 Te and other rare processes. The observation of ??0? would

Elena Ferri

312

The Neutrinoless Double Beta Decay: The Case for Germanium Detectors  

E-Print Network [OSTI]

An overview of the current status of Neutrinoless Double Beta Decay is presented, emphasizing on the case of Germanium Detectors.

A. Morales; J. Morales

2002-11-21T23:59:59.000Z

313

Geothermal: Sponsored by OSTI -- Structure of the Electric Double...  

Office of Scientific and Technical Information (OSTI)

Structure of the Electric Double Layer in Hydrothermal Systems. Molecular Simulation Approach and Interpretation of Experimental Results...

314

Majorana phases, CP violation, sterile neutrinos and neutrinoless double-beta decay  

SciTech Connect (OSTI)

CP violation plays a crucial role in the generation of the baryon asymmetry in the Universe. Within this context we investigate the possibility of CP violation in the lepton sector caused by Majorana neutrino mixing. Focus is put on the model including 1 sterile neutrino. Both cases of normal and inverted neutrino mass spectrum are considered. We address the question whether the Majorana phases can be measured in the neutrinoless double-beta decay experiments with sensitivity to the effective Majorana neutrino mass of the order of 10{sup ?2} eV.

Babi?, Andrej [Department of Nuclear Physics and Biophysics, Faculty of Mathematics, Physics and Informatics, Comenius University, Mlynská dolina, 842 48 Bratislava (Slovakia); Šimkovic, Fedor [Bogoliubov Laboratory of Theoretical Physics, JINR, Joliot-Curie 6, 141980 Dubna, Moscow region, Russia and Institute of Experimental and Applied Physics, Czech Technical University, CZ-128 00 Prague (Czech Republic)

2013-12-30T23:59:59.000Z

315

Essential state of the electromagnetic field and the double-slit experiment  

E-Print Network [OSTI]

A new class of generalized solutions related to the essential spectrum of linear Maxwell's equations is presented. The essential modes are given in terms of normalized singular Weyl's sequences, whose square represents Dirac's delta functions in spatial and angular frequency domains. The action integral associated with essential modes is well-defined. We claim that these modes represent the collapsed state of the electromagnetic field and, with some additional assumptions on the conservation of action, are suitable for describing the double-slit experiment in accordance with the orthodox point of view.

Budko, N V; Budko, Neil V.; Samokhin, Alexander B.

2006-01-01T23:59:59.000Z

316

Essential state of the electromagnetic field and the double-slit experiment  

E-Print Network [OSTI]

A new class of generalized solutions related to the essential spectrum of linear Maxwell's equations is presented. The essential modes are given in terms of normalized singular Weyl's sequences, whose square represents Dirac's delta functions in spatial and angular frequency domains. The action integral associated with essential modes is well-defined. We claim that these modes represent the collapsed state of the electromagnetic field and, with some additional assumptions on the conservation of action, are suitable for describing the double-slit experiment in accordance with the orthodox point of view.

Neil V. Budko; Alexander B. Samokhin

2006-10-02T23:59:59.000Z

317

Double Beta Decay Experiments Department of Physics and Astronomy  

E-Print Network [OSTI]

1 Double Beta Decay Experiments A. Piepkea a Department of Physics and Astronomy University. The experimen- tal investigation of the nuclear double beta decay is one of the key techniques for solving, such as the evaluation of the beta spec- tra near their endpoint, or neutrinoless double beta decay. The latter technique

Piepke, Andreas G.

318

Sensitivity of CUORE to Neutrinoless Double-Beta Decay  

E-Print Network [OSTI]

of CUORE to Neutrinoless Double-Beta Decay b c,:L d e f F .s t results on neutrinoless double beta decay of T e w i t hthe study of neutrinoless double beta decay, J . C r y s t .

Alessandria, F.

2013-01-01T23:59:59.000Z

319

Homotopy BV-algebra structure on the double cobar construction  

E-Print Network [OSTI]

Homotopy BV-algebra structure on the double cobar construction Alexandre Quesney Abstract We show that the double cobar construction, 2C(X), of a simplicial set X is a homotopy BV-algebra if X is a double.2 The bar and cobar constructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 Hopf algebras

Paris-Sud XI, Université de

320

The Majorana Neutrinoless Double-Beta Decay Experiment  

E-Print Network [OSTI]

The Majorana Neutrinoless Double-Beta Decay Experiment Pre-conceptual Design Proposal November 22 Motivation for Neutrinoless Double-Beta Decay Experiments . . . . . . . . . 4 2.1.1 Community Guidance Neutrinoless Double-Beta Decay Results . . . . . . . . . . . . . . . . . . . . 12 2.5 Next

Washington at Seattle, University of - Department of Physics, Electroweak Interaction Research Group

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Double K-Vacancy Production by X-Ray Photoionization  

E-Print Network [OSTI]

Double K-Vacancy Production by X-Ray Photoionization S. H. Southworth£ , R. W. Dunford£ , E. P Photon Source. Double K-vacancy production in Ne was observed by recording the KK-KLL Auger. For Mo, double K-vacancy production was observed by recording the K fluorescence hypersatellite

322

Charge trapping by anionic quinones electrostatically bound to a highly charged cationic quinone-viologen polymer or a cationic poly(3-viologen-thiophene)  

SciTech Connect (OSTI)

Charge associated with quinone reduction is trapped at low pH in systems composed of sulfonated anthraquinones electrostatically bound to a polymer derived from a monomer consisting of a quinone unit flanked by two viologen units. Each monomer repeat unit carries 6 equiv of positive charge which can be charge compensated by monosulfonated anthraquinone to yield a quinone-viologen ratio of nearly 7:2. At low pH, electrostatic binding is persistent, and the amount of trapped charge is 90% of the theoretical maximum. Some of the electrostatically bound quinine can be replaced with Fe(CN)[sub 6][sup 3[minus

Hable, C.T.; Crooks, R.M.; Valentine, J.R.; Giasson, R.; Wrighton, M.S. (Massachusetts Inst. of Technology, Cambridge (United States))

1993-06-03T23:59:59.000Z

323

Exact evaluation of the rates of electrostatic decay and scattering off thermal ions for an unmagnetized Maxwellian plasma  

SciTech Connect (OSTI)

Electrostatic decay of Langmuir waves into Langmuir and ion sound waves (L?L?+S) and scattering of Langmuir waves off thermal ions (L+i?L?+i?, also called “nonlinear Landau damping”) are important nonlinear weak-turbulence processes. The rates for these processes depend on the quadratic longitudinal response function ?{sup (2)} (or, equivalently, the quadratic longitudinal susceptibility ?{sup (2)}), which describes the second-order response of a plasma to electrostatic wave fields. Previous calculations of these rates for an unmagnetized Maxwellian plasma have relied upon an approximate form for ?{sup (2)} that is valid where two of the wave fields are fast (i.e., v{sub ?}=?/k?V{sub e} where ? is the angular frequency, k is the wavenumber, and V{sub e} is the electron thermal speed) and one is slow (v{sub ?}?V{sub e}). Recently, an exact expression was derived for ?{sup (2)} that is valid for any phase speeds of the three waves in an unmagnetized Maxwellian plasma. Here, this exact ?{sup (2)} is applied to the calculation of the three-dimensional rates for electrostatic decay and scattering off thermal ions, and the resulting exact rates are compared with the approximate rates. The calculations are performed using previously derived three-dimensional rates for electrostatic decay given in terms of a general ?{sup (2)}, and newly derived three-dimensional rates for scattering off thermal ions; the scattering rate is derived assuming a Maxwellian ion distribution, and both rates are derived assuming arc distributions for the wave spectra. For most space plasma conditions, the approximate rate is found to be accurate to better than 20%; however, for sufficiently low Langmuir phase speeds (v{sub ?}/V{sub e}?3) appropriate to some spatial domains of the foreshock regions of planetary bow shocks and type II solar radio bursts, the use of the exact rate may be necessary for accurate calculations. The relative rates of electrostatic decay and scattering off thermal ions are calculated for a range of parameters using the exact expressions for the rates; electrostatic decay is found to have the larger growth rate over the whole range of parameters, consistent with previous approximate calculations.

Layden, B.; Cairns, Iver H.; Robinson, P. A. [School of Physics, University of Sydney, Sydney, NSW 2006 (Australia)] [School of Physics, University of Sydney, Sydney, NSW 2006 (Australia)

2013-08-15T23:59:59.000Z

324

Advances in target normal sheath acceleration theory  

SciTech Connect (OSTI)

A theoretical model of the Target Normal Sheath Acceleration (TNSA) process, able to go beyond the limits of available descriptions, is developed. It allows to achieve a more satisfactory interpretation of TNSA. The theory, also supported by two dimensional particle-in-cell simulations, elucidates the role played by the main laser and target parameters. Comparison between model predictions and experimental data related to the target thickness dependence of the maximum ion energy is discussed, showing satisfactory agreement. The model can be used as a simple but effective tool to guide the design of future experiments.

Passoni, M.; Sgattoni, A. [Dipartimento di Energia, Politecnico di Milano, and Sezione di Milano INFN, Milan (Italy)] [Dipartimento di Energia, Politecnico di Milano, and Sezione di Milano INFN, Milan (Italy); Perego, C. [Dipartimento di Fisica, Università di Milano-Bicocca, Milan (Italy)] [Dipartimento di Fisica, Università di Milano-Bicocca, Milan (Italy); Batani, D. [Université Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405 Talence (France) [Université Bordeaux, CNRS, CEA, CELIA (Centre Lasers Intenses et Applications), UMR 5107, F-33405 Talence (France); Dipartimento di Energia, Politecnico di Milano, and Sezione di Milano INFN, Milan (Italy)

2013-06-15T23:59:59.000Z

325

Importance of neutrinoless double beta decay  

E-Print Network [OSTI]

A natural explanation for the smallness of the neutrino mass requires them to be Majorana particles violating lepton number by two units. Since lepton number violation can have several interesting consequences in particle physics and cosmology, it is of utmost importance to find out if there is lepton number violation in nature and what is its magnitude. The neutrinoless double beta decay experiment can answer these questions: if there is lepton number violation and if neutrinos are Majorana particles. In addition, the magnitude of neutrinoless double beta decay will constrain any other lepton number violating processes. This lepton number violation may also be relatd to the matter-antimatter asymmetry of the universe, dark matter and cosmological constant.

Utpal Sarkar

2007-12-17T23:59:59.000Z

326

Neutrinoless Double Beta Decay and its "Inverse"  

E-Print Network [OSTI]

Recent considerations by these authors pointed out the attractive features which a search for the exchange of heavy Majorana neutrinos could have for solving the mass and the lepton number puzzles for all neutrinos, in TeV-level electron-electron scattering. In the present note, we show that, contrary to subsequently published arguments, non-observation of neutrinoless double beta decay has, to date, no bearing on the promise of this important task for future linear electron colliders.

Clemens A. Heusch; Peter Minkowski

1996-11-18T23:59:59.000Z

327

Neutrinoless Double Beta Decay in Particle Physics  

E-Print Network [OSTI]

Neutrinoless double beta decay is a process of fundamental importance for particle physics. It can be mediated by light massive Majorana neutrinos (standard interpretation) or by something else (non-standard interpretations). We review its dependence on the neutrino parameters, its complementarity to other observables sensitive to neutrino mass, and emphasize its ability to distinguish different neutrino mass models. Then we discuss mechanisms different from light Majorana neutrino exchange, and show what can be learned from those and how they could be tested.

Werner Rodejohann

2010-11-22T23:59:59.000Z

328

Double-clad nuclear fuel safety rod  

DOE Patents [OSTI]

A device for shutting down a nuclear reactor during an undercooling or overpower event, whether or not the reactor's scram system operates properly. This is accomplished by double-clad fuel safety rods positioned at various locations throughout the reactor core, wherein melting of a secondary internal cladding of the rod allows the fuel column therein to shift from the reactor core to place the reactor in a subcritical condition.

McCarthy, William H. (Los Altos, CA); Atcheson, Donald B. (Cupertino, CA); Vaidyanathan, Swaminathan (San Jose, CA)

1984-01-01T23:59:59.000Z

329

Double beta decays of {sup 106}Cd  

SciTech Connect (OSTI)

The two-neutrino (2{nu}2{beta}) and neutrinoless (0{nu}2{beta}) double beta decays of {sup 106}Cd are studied for the transitions to the ground state 0{sub gs}{sup +} and 0{sup +} and 2{sup +} excited states in {sup 106}Pd by using realistic many-body wave functions calculated in the framework of the quasiparticle random-phase approximation. Effective, G-matrix-derived nuclear forces are used in realistic single-particle model spaces. All the possible channels, {beta}{sup +}{beta}{sup +}, {beta}{sup +}EC, and ECEC, are discussed for both the 2{nu}2{beta} and 0{nu}2{beta} decays. The associated half-lives are computed and particular attention is devoted to the study of the detectability of the resonant neutrinoless double electron capture (R0{nu}ECEC) process in {sup 106}Cd. The calculations of the present article constitute the thus far most complete and up-to-date investigation of the double-beta-decay properties of {sup 106}Cd.

Suhonen, Jouni [Department of Physics, P.O. Box 35 (YFL), FI-40014 University of Jyvaeskylae (Finland)

2011-12-16T23:59:59.000Z

330

Double-Difference Tomography for Sequestration MVA  

SciTech Connect (OSTI)

Analysis of synthetic data was performed to determine the most cost-effective tomographic monitoring system for a geologic carbon sequestration injection site. Double-difference tomographic inversion was performed on 125 synthetic data sets: five stages of CO2 plume growth, five seismic event regions, and five geophone arrays. Each resulting velocity model was compared quantitatively to its respective synthetic velocity model to determine an accuracy value. The results were examined to determine a relationship between cost and accuracy in monitoring, verification, and accounting applications using double-difference tomography. The geophone arrays with widely-varying geophone locations, both laterally and vertically, performed best. Additionally, double difference seismic tomography was performed using travel time data from a carbon sequestration site at the Aneth oil field in southeast Utah as part of a Department of Energy initiative on monitoring, verification, and accounting (MVA) of sequestered CO2. A total of 1,211 seismic events were recorded from a borehole array consisting of 22 geophones. Artificial velocity models were created to determine the ease with which different CO2 plume locations and sizes can be detected. Most likely because of the poor geophone arrangement, a low velocity zone in the Desert Creek reservoir can only be detected when regions of test site containing the highest ray path coverage are considered. MVA accuracy and precision may be improved through the use of a receiver array that provides more comprehensive ray path coverage.

Westman, Erik

2008-12-31T23:59:59.000Z

331

A background free double beta decay experiment  

E-Print Network [OSTI]

We present a new detection scheme for rejecting backgrounds in neutrino less double beta decay experiments. It relies on the detection of Cherenkov light emitted by electrons in the MeV region. The momentum threshold is tuned to reach a good discrimination between background and good events. We consider many detector concepts and a range of target materials. The most promising is a high-pressure 136Xe emitter for which the required energy threshold is easily adjusted. Combination of this concept and a high pressure Time Projection Chamber could provide an optimal solution. A simple and low cost effective solution is to use the Spherical Proportional Counter that provides two delayed signals from ionization and Cherenkov light. In solid-state double beta decay emitters, because of their higher density, the considered process is out of energy range. An alternative solution could be the development of double decay emitters with lower density by using for instance the aerogel technique. It is surprising that a technology used for particle identification in high-energy physics becomes a powerful tool for rejecting backgrounds in such low-energy experiments.

Ioannis Giomataris

2010-12-20T23:59:59.000Z

332

A background free double beta decay experiment  

E-Print Network [OSTI]

We present a new detection scheme for rejecting backgrounds in neutrino less double beta decay experiments. It relies on the detection of Cherenkov light emitted by electrons in the MeV region. The momentum threshold is tuned to reach a good discrimination between background and good events. We consider many detector concepts and a range of target materials. The most promising is a high-pressure 136Xe emitter for which the required energy threshold is easily adjusted. Combination of this concept and a high pressure Time Projection Chamber could provide an optimal solution. A simple and low cost effective solution is to use the Spherical Proportional Counter that provides two delayed signals from ionization and Cherenkov light. In solid-state double beta decay emitters, because of their higher density, the considered process is out of energy range. An alternative solution could be the development of double decay emitters with lower density by using for instance the aerogel technique. It is surprising that a te...

Giomataris, Ioannis

2010-01-01T23:59:59.000Z

333

An electrostatic nanogenerator based on ZnO/ZnS core/shell electrets with stabilized quasi-permanent charge  

SciTech Connect (OSTI)

ZnO-based nanogenerators with excellent performance and convenient functionalization are particularly desirable for self-powered technology, which is however difficult to achieve simultaneously in traditional piezoelectric ZnO nanogenerators. Here, we report a design of electrostatic ZnO nanogenerator by virtue of a type-II ZnO/ZnS core/shell nanostructure electrets, which can turn acoustic waves into electric power with an energy conversion efficiency of 2.2%. The ZnO/ZnS core/shell electrets are charged by ultraviolet irradiation with a long-term stability of the electrostatic charges under ambient condition. The electronic and atomic structure evolution in the charged ZnO/ZnS core/shell electrets are also discussed by detailed experimental and theoretical investigations. This design opens up an alternative path for fabricating robust ZnO-based nanogenerator for future nanotechnology application.

Wang, Chao; Cai, Liang; Feng, Yajuan; Chen, Lin; Yan, Wensheng, E-mail: ywsh2000@ustc.edu.cn, E-mail: zhsun@ustc.edu.cn; Liu, Qinghua; Yao, Tao; Hu, Fengchun; Pan, Zhiyun; Sun, Zhihu, E-mail: ywsh2000@ustc.edu.cn, E-mail: zhsun@ustc.edu.cn; Wei, Shiqiang [National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029 (China)

2014-06-16T23:59:59.000Z

334

Measurements of the Casimir-Lifshitz force in fluids: the effect of electrostatic forces and Debye screening  

E-Print Network [OSTI]

In this work, we present detailed measurements of the Casimir-Lifshitz force between two gold surfaces (a sphere and a plate) immersed in ethanol and study the effect of residual electrostatic forces, which are dominated by static fields within the apparatus and can be reduced with proper shielding. Electrostatic forces are further reduced by Debye screening through the addition of salt ions to the liquid. Additionally, the salt leads to a reduction of the Casimir-Lifshitz force by screening the zero-frequency contribution to the force; however, the effect is small between gold surfaces at the measured separations and within experimental error. An improved calibration procedure is described and compared to previous methods. Finally, the experimental results are compared to Lifshitz's theory and found to be consistent for the materials used in the experiment.

J. N. Munday; Federico Capasso; V. Adrian Parsegian; Sergey M. Bezrukov

2008-08-13T23:59:59.000Z

335

Exploring the Neutrinoless Double Beta Decay in the Inverted Neutrino Hierarchy with Bolometric Detectors  

E-Print Network [OSTI]

Exploring the Neutrinoless Double Beta Decay in the InvertedC. Giunti, Neutrinoless double-beta decay. A brief review,el- ements for neutrinoless double-beta decay and double-

Artusa, D. R.

2014-01-01T23:59:59.000Z

336

Nonlinear Modulated Envelope Electrostatic Wavepacket Propagation in Space and Laboratory Plasmas  

SciTech Connect (OSTI)

A brief review of the occurrence of amplitude modulated structures in space and laboratory plasmas is provided, followed by a theoretical analysis of the mechanism of carrier wave (self-) interaction, with respect to electrostatic plasma modes. A generic collisionless unmagnetized fluid model is employed. Both cold-(zero-temperature) and warm-(finite temperature) fluid descriptions are considered and compared. The weakly nonlinear oscillation regime is investigated by applying a multiple scale (reductive perturbation) technique and a Nonlinear Schroedinger Equation (NLSE) is obtained, describing the evolution of the slowly varying wave amplitude in time and space. The amplitude's stability profile reveals the possibility of modulational instability to occur under the influence of external perturbations. The NLSE admits exact localized envelope (solitary wave) solutions of bright (pulses) or dark (holes, voids) type, whose characteristics depend on intrinsic plasma parameters. The role of perturbation obliqueness (with respect to the propagation direction), finite temperature and -- possibly -- defect (dust) concentration is explicitly considered. The relevance of this description with respect to known electron-ion (e-i) as well as dusty (complex) plasma modes is briefly discussed.

Kourakis, Ioannis; Shukla, Padma Kant [Institut fuer Theoretische Physik IV, Fakultaet fuer Physik und Astronomie, Ruhr-Universitaet Bochum, D-44780 Bochum (Germany)

2004-12-01T23:59:59.000Z

337

Dendrite-Free Lithium Deposition via Self-Healing Electrostatic Shield Mechanism  

SciTech Connect (OSTI)

Lithium metal batteries are called the “holy grail” of energy storage systems. However, lithium dendrite growth in these batteries has prevented their practical applications in the last 40 years. Here we show a novel mechanism which can fundamentally change the dendritic morphology of lithium deposition. A low concentration of the second cations (including ions of cesium, rubidium, potassium, and strontium) exhibits an effective reduction potential lower than the standard reduction potential of lithium ions when the chemical activities of these second cations are much lower than that of lithium ions. During lithium deposition, these second cations will form a self-healing electrostatic shield around the initial tip of lithium whenever it is formed. This shield will repel the incoming lithium ions and force them to deposit in the smoother region of the anode so a dendrite-free film is obtained. This mechanism is effective on dendrite prevention in both lithium metal and lithium ion batteries. They may also prevent dendrite growth in other metal batteries and have transformational impact on the smooth deposition in general electrodeposition processes.

Ding, Fei; Xu, Wu; Graff, Gordon L.; Zhang, Jian; Sushko, Maria L.; Chen, Xilin; Shao, Yuyan; Engelhard, Mark H.; Nie, Zimin; Xiao, Jie; Liu, Xingjiang; Sushko, P. V.; Liu, Jun; Zhang, Jiguang

2013-02-28T23:59:59.000Z

338

Survey and evaluation of modern electrostatic concepts applied to high-resistivity fly ash  

SciTech Connect (OSTI)

The ineffectiveness of conventional electrostatic precipitators on high resistivity fly ash has different, though interrelated, causes. Voltages high enough to generate corona at the discharge electrode also generate back corona on the deposited dust layer. Removal of the layer results in reentrainment losses. Reduction of voltage to suppress back corona reduces precipitation effectiveness. All of the surveyed concepts attempt to deal with one or more of these problems; most but none will address all of the deficiencies. A versatile multiple-concept pilot precipitator would allow GFETC to develop the optimum combination of novel concepts. Acurex is recommending a precipitator with component interchangeability in three sections: (1) the main precipitator section (one or more cells) should be designed to accept either conventional electrodes or a few tri-electrode configurations. Versatile pulse-charged power supplies will be needed to accommodate the various electrode configurations. The best method of suppressing back-corona in the precipitator itself can thus be developed; (2) a precharger section should be installed ahead of the main precipitator to optimize precharger design; and (3) a downstream collector section would test the effectiveness of concepts which lend themselves to effective collection of low-load, high-resistivity, small particles. These include wet precipitators, fabric filters, and bed filters. The separation of functions will allow more effective particle charging in the first section, collection of most of the particulate without reverse ionization in the main section, and polishing of the remaining fine and reentrained particulate in a suitable downstream collector.

Not Available

1980-12-01T23:59:59.000Z

339

A comb-sampling method for enhanced mass analysis in linear electrostatic ion traps  

SciTech Connect (OSTI)

In this paper an algorithm for extracting spectral information from signals containing a series of narrow periodic impulses is presented. Such signals can typically be acquired by pickup detectors from the image-charge of ion bunches oscillating in a linear electrostatic ion trap, where frequency analysis provides a scheme for high-resolution mass spectrometry. To provide an improved technique for such frequency analysis, we introduce the CHIMERA algorithm (Comb-sampling for High-resolution IMpulse-train frequency ExtRAaction). This algorithm utilizes a comb function to generate frequency coefficients, rather than using sinusoids via a Fourier transform, since the comb provides a superior match to the data. This new technique is developed theoretically, applied to synthetic data, and then used to perform high resolution mass spectrometry on real data from an ion trap. If the ions are generated at a localized point in time and space, and the data is simultaneously acquired with multiple pickup rings, the method is shown to be a significant improvement on Fourier analysis. The mass spectra generated typically have an order of magnitude higher resolution compared with that obtained from fundamental Fourier frequencies, and are absent of large contributions from harmonic frequency components.

Greenwood, J. B.; Kelly, O.; Calvert, C. R.; Duffy, M. J.; King, R. B.; Belshaw, L.; Graham, L.; Alexander, J. D.; Williams, I. D. [Centre for Plasma Physics, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN (United Kingdom); Bryan, W. A. [Department of Physics, Swansea University, Swansea SA2 8PP (United Kingdom); Turcu, I. C. E.; Cacho, C. M.; Springate, E. [Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0QX (United Kingdom)

2011-04-15T23:59:59.000Z

340

Influence of pH condition on colloidal suspension of exfoliated graphene oxide by electrostatic repulsion  

SciTech Connect (OSTI)

A facile chemical process is described to produce graphene oxide utilizing a zwitterions amino acid intermediate from graphite oxide sheets. 11-aminoundecanoic acid molecules were protonated to intercalate molecules into the graphite oxide sheets to achieve ion exchange, and the carboxyl groups were then ionized in a NaOH solution to exfoliate the graphite oxide sheets. In this way, the produced graphene oxide nanosheets were stably dispersed in water. The delaminated graphene nanosheets were confirmed by XRD, AFM, and TEM. XRD patterns indicated the d{sub 002}-spacing of the graphite greatly increased from 0.380 nm and 0.870 nm. AFM and TEM images showed that the ordered graphite crystal structure of graphene nanosheets was effectively exfoliated by this method. The prepared graphene nanosheets films showed 87.1% transmittance and a sheet resistance of 2.1 Multiplication-Sign 10{sup 3} {Omega}/square. - Graphical abstract: A stable graphene oxide suspension could be quickly prepared by exfoliating a graphite oxide suspension by a host-guest electrostatic repulsion in aqueous solution. Highlights: Black-Right-Pointing-Pointer Graphene nanosheets were prepared by a zwitterions amino acid intermediate from graphite oxide. Black-Right-Pointing-Pointer 11-aminoundecanoic acid was protonated to intercalate molecules into the graphene oxide to achieve ion exchange. Black-Right-Pointing-Pointer The d{sub 002}-spacing of the graphite oxide greatly increased from 0.330 nm to 0.415 nm after 11-aminoundecanoic acid treatment.

Meng, Long-Yue [Department of Chemistry, Inha University, 253 Nam-gu, Incheon 402-751 (Korea, Republic of); Park, Soo-Jin, E-mail: sjpark@inha.ac.kr [Department of Chemistry, Inha University, 253 Nam-gu, Incheon 402-751 (Korea, Republic of)

2012-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Electrostatic wave structures in a magnetized superthermal plasma with two-temperature electrons  

SciTech Connect (OSTI)

The linear and nonlinear excitation of arbitrary amplitude ion-acoustic (IA) solitary waves in a magnetized plasma comprising two-temperature electrons and cold ions are studied. The oblique propagation properties of two possible modes (in the linear regime) are investigated. It is found that the electron superthermality reduces the phase velocities of both modes, whereas obliqueness leads to an increase in the separation between two modes. In the nonlinear regime, an energy-like equation describes the evolution of IA solitary waves in the present model. The combined effects of the electron superthermality, magnitude of magnetic field, obliqueness and electron population are incorporated in the study of the existence domain of solitary waves and the soliton characteristics. It is shown that the small values of the hot electron population shift the permitted interval of Mach number to the lower values. Both compressive and rarefactive solitary structures are found to exist in the presence of two temperature electrons. The present investigation contributes to the physics of electrostatic wave structures in Saturn's magnetosphere in which two temperature electrons with kappa distribution exist.

Shahmansouri, M. [Department of Physics, Faculty of Science, Arak University, Arak 38156- 8 8349 (Iran, Islamic Republic of)] [Department of Physics, Faculty of Science, Arak University, Arak 38156- 8 8349 (Iran, Islamic Republic of); Alinejad, H. [Department of Physics, Faculty of Basic Science, Babol University of Technology, Babol 47148-71167 (Iran, Islamic Republic of)] [Department of Physics, Faculty of Basic Science, Babol University of Technology, Babol 47148-71167 (Iran, Islamic Republic of)

2013-08-15T23:59:59.000Z

342

Electrostatics on the sphere with applications to Monte Carlo simulations of two dimensional polar fluids  

E-Print Network [OSTI]

We present two methods for solving the electrostatics of point charges and multipoles on the surface of a sphere, \\textit{i.e.} in the space $\\mathcal{S}_{2}$, with applications to numerical simulations of two-dimensional polar fluids. In the first approach, point charges are associated with uniform neutralizing backgrounds to form neutral pseudo-charges, while, in the second, one instead considers bi-charges, \\textit{i.e.} dumbells of antipodal point charges of opposite signs. We establish the expressions of the electric potentials of pseudo- and bi-charges as isotropic solutions of the Laplace-Beltrami equation in $\\mathcal{S}_{2}$. A multipolar expansion of pseudo- and bi-charge potentials leads to the electric potentials of mono- and bi-multipoles respectively. These potentials constitute non-isotropic solutions of the Laplace-Beltrami equation the general solution of which in spherical coordinates is recast under a new appealing form. We then focus on the case of mono- and bi-dipoles and build the theory...

Caillol, Jean-Michel

2015-01-01T23:59:59.000Z

343

Integrated low emission cleanup system for direct coal-fueled turbines (electrostatic agglomeration)  

SciTech Connect (OSTI)

The objective of this contract is to investigate the removal of SO[sub x] and particulate matter from direct coal-fired combustion gas streams at high temperature and high pressure conditions. This investigation will be accomplished through a bench-scale testing and evaluation program employing sorbent mixed with a coal-water slurry for SO[sub x] removal, and an innovative particulate control concept. The particulate control device utilizes electrostatic agglomeration followed by a high efficiency mechanical collector (cyclone). The process goal is to achieve particulate collection efficiency better than that required by the 1979 new source performance standards. An additional goal is to demonstrate 70% SO[sub x] removal efficiency. This research project is now in the second of a 3 phase (phase II) project. Phase II is to fabricate the combustor and particulate control devices and install the system at a test facility located at Research-Cottrell's, KVB Western Laboratory, Santa Ana, CA. There are three functional categories, or tasks which are to be completed in sequence. These tasks are itemized as follows: design, procurement, and installation, shakedown and startup, and reporting.

Quimby, J.M.

1992-05-01T23:59:59.000Z

344

Gyrokinetic theory of electrostatic lower-hybrid drift instabilities in a current sheet with guide field  

SciTech Connect (OSTI)

A kinetic electrostatic eigenvalue equation for the lower-hybrid drift instability (LHDI) in a thin Harris current sheet with a guide field is derived based on the gyrokinetic electron and fully kinetic ion(GeFi) description. Three-dimensional nonlocal analyses are carried out to investigate the influence of a guide field on the stabilization of the LHDI by finite parallel wavenumber, k{sub ?}. Detailed stability properties are first analyzed locally, and then as a nonlocal eigenvalue problem. Our results indicate that at large equilibrium drift velocities, the LHDI is further destabilized by finite k{sub ?} in the short-wavelength domain. This is demonstrated in a local stability analysis and confirmed by the peak in the eigenfunction amplitude. We find the most unstable modes localized at the current sheet edges, and our results agree well with simulations employing the GeFi code developed by Lin et al. [Plasma Phys. Controlled Fusion 47, 657 (2005); Plasma Phys. Controlled Fusion 53, 054013 (2011)].

Tummel, K., E-mail: tummel08@gmail.com [Department of Physics and Astronomy, University of California at Irvine, Irvine, California 92697 (United States); Chen, L. [Institute for Fusion Theory and Simulation and Department of Physics, ZheJiang University, Hang Zhou, ZheJiang 310058 (China) [Institute for Fusion Theory and Simulation and Department of Physics, ZheJiang University, Hang Zhou, ZheJiang 310058 (China); Department of Physics and Astronomy, University of California at Irvine, Irvine, California 92697 (United States); Wang, Z.; Wang, X. Y.; Lin, Y. [Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)] [Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)

2014-05-15T23:59:59.000Z

345

Fast Neutral Generation by Charge Exchange Reaction and Its Effect on Neutron Production Rate in Inertial Electrostatic Confinement Fusion Systems  

SciTech Connect (OSTI)

Fast neutral generation by charge exchange reaction in inertial electrostatic confinement plasmas is studied by solving the Poisson equation and the Boltzmann equation for fast neutrals. Fusion reactions carried by the charge exchange fast neutrals become appreciable compared with ion-background fusion reaction. It is shown that the fusion reaction between fast neutral and background gas is sensitively affected by experimental parameters (grid voltage, background gas pressure) and ion distribution function.

Yoshinaga, S.; Matsuura, H.; Nakao, Y.; Kudo, K. [Kyushu University (Japan)

2005-05-15T23:59:59.000Z

346

Excitation of electrostatic waves in the electron cyclotron frequency range during magnetic reconnection in laboratory overdense plasmas  

SciTech Connect (OSTI)

We report the observation of electromagnetic radiation at high harmonics of the electron cyclotron frequency that was considered to be converted from electrostatic waves called electron Bernstein waves (EBWs) during magnetic reconnection in laboratory overdense plasmas. The excitation of EBWs was attributed to the thermalization of electrons accelerated by the reconnection electric field around the X-point. The radiative process discussed here is an acceptable explanation for observed radio waves pulsation associated with major flares.

Kuwahata, A., E-mail: kuwahata@ts.t.u-tokyo.ac.jp [Graduate School of Engineering, The University of Tokyo, Tokyo 113-8656 (Japan); Igami, H. [National Institute for Fusion Science, Toki 509-5292 (Japan); Kawamori, E. [Institute of Space and Plasma Sciences, National Cheng Kung University, Tainan 70101, Taiwan (China); Kogi, Y. [Fukuoka Institute of Technology, Fukuoka 811-0295 (Japan); Inomoto, M.; Ono, Y. [Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa 277-8561 (Japan)

2014-10-15T23:59:59.000Z

347

Comment on {open_quote}{open_quote}Optimization of electrostatic deflectors{close_quote}{close_quote} [J. Vac. Sci. Technol. B {bold 13}, 142 (1995)  

SciTech Connect (OSTI)

It is contended that contrarily to the claim of Szilagyi and Cho (Ref. 1), thecoma of deflection as well as field curvature can not be eliminated in the optimized electrostatic deflectors. (AIP)

Lencova, B. [Institute of Scientific Instruments, Academy of Sciences of the Czech Republic, Kralovopolska 147, 612 64 Brno (Czech Republic)] [Institute of Scientific Instruments, Academy of Sciences of the Czech Republic, Kralovopolska 147, 612 64 Brno (Czech Republic)

1996-05-01T23:59:59.000Z

348

Resonant normal form and asymptotic normal form behavior in magnetic bottle Hamiltonians  

E-Print Network [OSTI]

We consider normal forms in `magnetic bottle' type Hamiltonians of the form $H=\\frac{1}{2}(\\rho^2_\\rho+\\omega^2_1\\rho^2) +\\frac{1}{2}p^2_z+hot$ (second frequency $\\omega_2$ equal to zero in the lowest order). Our main results are: i) a novel method to construct the normal form in cases of resonance, and ii) a study of the asymptotic behavior of both the non-resonant and the resonant series. We find that, if we truncate the normal form series at order $r$, the series remainder in both constructions decreases with increasing $r$ down to a minimum, and then it increases with $r$. The computed minimum remainder turns to be exponentially small in $\\frac{1}{\\Delta E}$, where $\\Delta E$ is the mirror oscillation energy, while the optimal order scales as an inverse power of $\\Delta E$. We estimate numerically the exponents associated with the optimal order and the remainder's exponential asymptotic behavior. In the resonant case, our novel method allows to compute a `quasi-integral' (i.e. truncated formal integral) valid both for each particular resonance as well as away from all resonances. We applied these results to a specific magnetic bottle Hamiltonian. The non resonant normal form yields theorerical invariant curves on a surface of section which fit well the empirical curves away from resonances. On the other hand the resonant normal form fits very well both the invariant curves inside the islands of a particular resonance as well as the non-resonant invariant curves. Finally, we discuss how normal forms allow to compute a critical threshold for the onset of global chaos in the magnetic bottle.

C. Efthymiopoulos; M. Harsoula; G. Contopoulos

2015-01-28T23:59:59.000Z

349

Measuring time of flight of fusion products in an inertial electrostatic confinement fusion device for spatial profiling of fusion reactions  

SciTech Connect (OSTI)

A new diagnostic has been developed that uses the time of flight (TOF) of the products from a nuclear fusion reaction to determine the location where the fusion reaction occurred. The TOF diagnostic uses charged particle detectors on opposing sides of the inertial electrostatic confinement (IEC) device that are coupled to high resolution timing electronics to measure the spatial profile of fusion reactions occurring between the two charged particle detectors. This diagnostic was constructed and tested by the University of Wisconsin-Madison Inertial Electrostatic Confinement Fusion Group in the IEC device, HOMER, which accelerates deuterium ions to fusion relevant energies in a high voltage ({approx}100 kV), spherically symmetric, electrostatic potential well [J. F. Santarius, G. L. Kulcinski, R. P. Ashley, D. R. Boris, B. B. Cipiti, S. K. Murali, G. R. Piefer, R. F. Radel, T. E. Radel, and A. L. Wehmeyer, Fusion Sci. Technol. 47, 1238 (2005)]. The TOF diagnostic detects the products of D(d,p)T reactions and determines where along a chord through the device the fusion event occurred. The diagnostic is also capable of using charged particle spectroscopy to determine the Doppler shift imparted to the fusion products by the center of mass energy of the fusion reactants. The TOF diagnostic is thus able to collect spatial profiles of the fusion reaction density along a chord through the device, coupled with the center of mass energy of the reactions occurring at each location. This provides levels of diagnostic detail never before achieved on an IEC device.

Donovan, D. C. [Sandia National Laboratories, 7011 East Avenue, Livermore, California 94550 (United States); Boris, D. R. [Naval Research Laboratory, 4555 Overlook Avenue, South West, Washington, DC 20375 (United States); Kulcinski, G. L.; Santarius, J. F. [Fusion Technology Institute, University of Wisconsin-Madison, 1500 Engineering Drive, Madison, Wisconsin 53706 (United States); Piefer, G. R. [Phoenix Nuclear Labs, 2555 Industrial Drive, Madison, Wisconsin 53713 (United States)

2013-03-15T23:59:59.000Z

350

Overview Report: Normal and Emergency Operation Visualization  

SciTech Connect (OSTI)

This is an overview report to document and illustrate methods used in a project entitled “Normal and Emergency Operations Visualization” for a utility company, conducted in 2009-2010 timeframe with funding from the utility company and the U.S. Department of Energy. The original final report (about 180 pages) for the project is not available for distribution because it alludes to findings that assessed the design of an operational system that contained proprietary information; this abridged version contains descriptions of methods and some findings to illustrate the approach used, while avoiding discussion of sensitive or proprietary information. The client has approved this abridged version of the report for unlimited distribution to give researchers and collaborators the benefit of reviewing the research concepts and methods that were applied in this study.

Greitzer, Frank L.

2011-05-01T23:59:59.000Z

351

Solar neutrino-electron scattering as background limitation for double beta decay  

E-Print Network [OSTI]

The background on double beta decay searches due to elastic electron scattering of solar neutrinos of all double beta emitters with Q-value larger than 2 MeV is calculated, taking into account survival probability and flux uncertainties of solar neutrinos. This work determines the background level to be [1-2]E-7 counts /keV/kg/yr, depending on the precise Q-value of the double beta emitter. It is also shown that the background level increases dramatically if going to lower Q-values. Furthermore, studies are done for various detector systems under consideration for next generation experiments. It was found that experiments based on loaded liquid scintillator have to expect a higher background. Within the given nuclear matrix element uncertainties any approach exploring the normal hierarchy has to face this irreducible background, which is a limitation on the minimal achievable background for purely calorimetric approaches. Large scale liquid scintillator experiments might encounter this problem already while exploring the inverted hierarchy. Potential caveats by using more sophisticated experimental setups are also discussed.

N. F. de Barros; K. Zuber

2011-09-16T23:59:59.000Z

352

Nuclear matrix elements for neutrinoless double-beta decay and double-electron capture  

E-Print Network [OSTI]

A new generation of neutrinoless double beta decay experiments with improved sensitivity is currently under design and construction. They will probe inverted hierarchy region of the neutrino mass pattern. There is also a revived interest to the resonant neutrinoless double-electron capture, which has also a potential to probe lepton number conservation and to investigate the neutrino nature and mass scale. The primary concern are the nuclear matrix elements. Clearly, the accuracy of the determination of the effective Majorana neutrino mass from the measured 0\

Amand Faessler; Vadim Rodin; Fedor Simkovic

2012-06-03T23:59:59.000Z

353

Characterizing the Performance of an Eppley Normal Incident Pyrheliometer An Eppley Normal Incident Pyrheliometer (NIP) is  

E-Print Network [OSTI]

With interest growing in the deployment of solar energy system, the accuracy of irradiance measurements becomes for concentrating solar energy systems. The Eppley Normal Incident Pyrheliometer (NIP) is used extensively for DNI and periods with clouds were excluded. The NIP is mounted on an automatic tracker that keeps the instrument

Oregon, University of

354

Neutrinoless double beta decay and QCD corrections  

E-Print Network [OSTI]

We consider one loop QCD corrections and renormalization group running of the neutrinoless double beta decay amplitude focusing on the short-range part of the amplitude (without the light neutrino exchange) and find that these corrections can be sizeable. Depending on the operator under consideration, there can be moderate to large cancellations or significant enhancements. We discuss several specific examples in this context. Such large corrections will lead to significant shifts in the half-life estimates which currently are known to be plagued with the uncertainties due to nuclear physics inputs to the physical matrix elements.

Namit Mahajan

2014-01-30T23:59:59.000Z

355

Simulated progress in double-beta decay  

SciTech Connect (OSTI)

A Monte Carlo code has been developed to accurately simulate double-beta decay measurements. Coincident gamma rays, beta spectra, and angular correlations have been added to adequately simulate a complete {sup 100}Mo nuclear decay and provide corrections to experimentally determined detector efficiencies. This code has been used to strip certain low-background spectra obtained in the Homestake gold mine in Lead, SD, for the purpose of extremely sensitive materials assay for the construction of new, large, enriched germanium detectors. Assays as low as 9 {mu}Bq/g of {sup 210}Pb in lead shielding were obtained.

Miley, H.S.; Arthur, R.J. [Pacific Northwest Lab., Richland, WA (United States); Avignone, F.T. [South Carolina Univ., Columbia, SC (United States)] [and others

1993-09-01T23:59:59.000Z

356

Double acting stirling engine phase control  

DOE Patents [OSTI]

A mechanical device for effecting a phase change between the expansion and compression volumes of a double-acting Stirling engine uses helical elements which produce opposite rotation of a pair of crankpins when a control rod is moved, so the phase between two pairs of pistons is changed by +.psi. and the phase between the other two pairs of pistons is changed by -.psi.. The phase can change beyond .psi.=90.degree. at which regenerative braking and then reversal of engine rotation occurs.

Berchowitz, David M. (Scotia, NY)

1983-01-01T23:59:59.000Z

357

Neutrinoless double beta decay and neutrino masses  

SciTech Connect (OSTI)

Neutrinoless double beta decay (0{nu}{beta}{beta}) is a promising test for lepton number violating physics beyond the standard model (SM) of particle physics. There is a deep connection between this decay and the phenomenon of neutrino masses. In particular, we will discuss the relation between 0{nu}{beta}{beta} and Majorana neutrino masses provided by the so-called Schechter-Valle theorem in a quantitative way. Furthermore, we will present an experimental cross check to discriminate 0{nu}{beta}{beta} from unknown nuclear background using only one isotope, i.e., within one experiment.

Duerr, Michael [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany)

2012-07-27T23:59:59.000Z

358

Complete characterization of double photoionization processes  

SciTech Connect (OSTI)

We analyze correlated photoelectron spectra of single-photon two-electron ionization [double photoionization (DPI)] of helium to reconstruct the phase of the spectral amplitude of this process. The phase can be reconstructed reliably in a wide range of photoelectron momenta, thus allowing one to retrieve information about the wave function of the DPI process and its temporal evolution. Our simulation indicates that the proposed phase reconstruction technique can be applied in experiment to trace dynamics of the DPI process with attosecond precision.

Ivanov, I. A.; Kheifets, A. S. [Research School of Physical Sciences, Australian National University, Canberra ACT 0200 (Australia)

2011-06-15T23:59:59.000Z

359

Normalization and missing value imputation for label-free LC...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Normalization and missing value imputation for label-free LC-MS analysis. Normalization and missing value imputation for label-free LC-MS analysis. Abstract: Shotgun proteomic data...

360

Nonlinear, stationary electrostatic ion cyclotron waves: Exact solutions for solitons, periodic waves, and wedge shaped waveforms  

SciTech Connect (OSTI)

The theory of fully nonlinear stationary electrostatic ion cyclotron waves is further developed. The existence of two fundamental constants of motion; namely, momentum flux density parallel to the background magnetic field and energy density, facilitates the reduction of the wave structure equation to a first order differential equation. For subsonic waves propagating sufficiently obliquely to the magnetic field, soliton solutions can be constructed. Importantly, analytic expressions for the amplitude of the soliton show that it increases with decreasing wave Mach number and with increasing obliquity to the magnetic field. In the subsonic, quasi-parallel case, periodic waves exist whose compressive and rarefactive amplitudes are asymmetric about the 'initial' point. A critical 'driver' field exists that gives rise to a soliton-like structure which corresponds to infinite wavelength. If the wave speed is supersonic, periodic waves may also be constructed. The aforementioned asymmetry in the waveform arises from the flow being driven towards the local sonic point in the compressive phase and away from it in the rarefactive phase. As the initial driver field approaches the critical value, the end point of the compressive phase becomes sonic and the waveform develops a wedge shape. This feature and the amplitudes of the compressive and rarefactive portions of the periodic waves are illustrated through new analytic expressions that follow from the equilibrium points of a wave structure equation which includes a driver field. These expressions are illustrated with figures that illuminate the nature of the solitons. The presently described wedge-shaped waveforms also occur in water waves, for similar 'transonic' reasons, when a Coriolis force is included.

McKenzie, J. F. [Department of Mathematics, Statistics and Physics, Durban University of Technology, Steve Biko Campus, Durban 4001 (South Africa); School of Mathematical Sciences, University of KwaZulu-Natal, Private Bag: X54001, Durban 4001 (South Africa); Doyle, T. B. [Materials Research Division, iThemba LABS, P.O.Box 722, Somerset West, 7129, South Africa and School of Chemistry and Physics, University of KwaZulu-Natal, Private Bag: X54001, Durban 4001 (South Africa); Rajah, S. S. [Department of Mathematics, Statistics and Physics, Durban University of Technology, Steve Biko Campus, Durban 4001 (South Africa)

2012-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

pH-dependent charge trapping by quinones electrostatically bound in an electrode confined benzylviologen polymer  

SciTech Connect (OSTI)

Anthraquinone-2,6-disulfonate, 2,6-AQ, and anthraquinone-2-sulfonate, 2-AQ, have been electrostatically bound in an electrode-confined N,N{prime}-bis(p-(trimethoxysilyl)benzyl)-4,4{prime}-bipyridinium-based polymer, (BPQ{sup 2+/+}){sub n}. Under all conditions in aqueous electrolyte it appears that charge transport via the quinone redox system, AQ/AQH{sub 2}, is too slow to allow direct access to all quinone centers in the polymer. Generally, all quinone centers are electrode accessible only via the BPQ{sup 2+/+} redox mediator. At pH 6.5 the electrochemistry of ((BPQ{sup 2+}){sub n}{center dot}(AQ){sub m}){sub surf} is approximately the superposition of the AQ solution electrochemistry and the electrochemistry of surface-confined (BPQ{sup 2+/+}){sub n} examined separately. At pH 1.0 the reduction potential of AQ shifts positive and (BPQ{sup 2+/+}){sub n} can only mediate the reduction of AQ to the 2e{sup {minus}}/2H{sup +} reduced form, AQH{sub 2}, since the oxidation of AQH{sub 2} by BPQ{sup 2+} is thermodynamically uphill. Therefore, the charge associated with the reduced quinone, AQH{sub 2}, remains trapped in analogy to previous reports of charge trapping in bilayer systems. The trapped charge is released from the ((BPQ{sup 2+}){sub n}{center dot}(AQ){sub m}){sub surf} system by a sudden increase in pH which changes the thermodynamics to allow oxidation of the AQH{sub 2} by the BPQ{sup 2+}.

Not Available

1989-02-23T23:59:59.000Z

362

Search For Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

The HEIDELBERG-MOSCOW experiment, which is the most sensitive double beta decay experiment since ten years has been regularly continued until end of November 2003. An analysis of the data has been performed already until May 20, 2003. The experiment yields now, on a 4? level, evidence for lepton number violation and proves that the neutrino is a Majorana particle. It further shows that neutrino masses are degenerate. In addition it puts several stringent constraints on other physics beyond the Standard Model. Among others it opens the door to test various supersymmetric theory scenarios, for example it gives the sharpest in the R-parity violating part of the superpotential, and limit on the parameter ? ? 111 gives information on the splitting of the sneutrino-antisneutrino system. The result from the HEIDELBERG-MOSCOW experiment is consistent with recent results from CMB investigations, with high energy cosmic rays, with the result from the g-2 experiment and with recent theoretical work. It is indirectly supported by the analysis of other Ge double beta experiments. Recent criticism of various kind has been shown to be wrong, among others by measurements performed in 2003 with a 214Bi source ( 226Ra), by simulation of the background in the range of Q?? by GEANT4, and by deeper investigation of statistical features such as sensitivity of peak search, and relevance of width of window of analysis. 1

H. V. Klapdor-kleingrothaus *a; I. V. Krivosheina A; A. Dietz A

2004-01-01T23:59:59.000Z

363

Fractal Fluctuations and Statistical Normal Distribution  

E-Print Network [OSTI]

Dynamical systems in nature exhibit selfsimilar fractal fluctuations and the corresponding power spectra follow inverse power law form signifying long-range space-time correlations identified as self-organized criticality. The physics of self-organized criticality is not yet identified. The Gaussian probability distribution used widely for analysis and description of large data sets underestimates the probabilities of occurrence of extreme events such as stock market crashes, earthquakes, heavy rainfall, etc. The assumptions underlying the normal distribution such as fixed mean and standard deviation, independence of data, are not valid for real world fractal data sets exhibiting a scale-free power law distribution with fat tails. A general systems theory for fractals visualizes the emergence of successively larger scale fluctuations to result from the space-time integration of enclosed smaller scale fluctuations. The model predicts a universal inverse power law incorporating the golden mean for fractal fluctuations and for the corresponding power spectra, i.e., the variance spectrum represents the probabilities, a signature of quantum systems. Fractal fluctuations therefore exhibit quantum-like chaos. The model predicted inverse power law is very close to the Gaussian distribution for small-scale fluctuations, but exhibits a fat long tail for large-scale fluctuations. Extensive data sets of Dow Jones index, Human DNA, Takifugu rubripes (Puffer fish) DNA are analysed to show that the space/time data sets are close to the model predicted power law distribution.

A. M. Selvam

2008-05-22T23:59:59.000Z

364

Smith Normal Form a possible basis for an  

E-Print Network [OSTI]

Smith Normal Form ­ a possible basis for an SVD ­ like code construction? (Semester Project I) Name.7 The Smith Normal Form . . . . . . . . . . . . . . . . . . . . . . . 12 3 Detailed treatment of the possibilities to use Smith's Normal Form for coding 14 3.1 Introduction

Henkel, Werner

365

EIGENVALUES AND THE SMITH NORMAL FORM Joseph J. Rushanan  

E-Print Network [OSTI]

EIGENVALUES AND THE SMITH NORMAL FORM Joseph J. Rushanan The MITRE Corporation, M/S E025, Bedford, MA 01730 Abstract. Results are shown that compare the Smith Normal Form (SNF) over the integers and its Smith Normal Form (SNF) over the integers. Our goals are more general than those results

Rushanan, Joe J.

366

Computation of Hermite and Smith Normal Forms of Matrices  

E-Print Network [OSTI]

Computation of Hermite and Smith Normal Forms of Matrices; Abstract We study the problem of computing Hermite and Smith normal forms of ma- trices over. One first result is a fast Las Vegas probabilistic algorithm to compute the * *Smith normal form

Storjohann, Arne

367

Computation of Hermite and Smith Normal Forms of Matrices  

E-Print Network [OSTI]

Computation of Hermite and Smith Normal Forms of Matrices by Arne Storjohann A thesis presented the problem of computing Hermite and Smith normal forms of ma­ trices over principal ideal domains. The main probabilistic algorithm to compute the Smith normal form of a polynomial matrix for those cases where pre

Storjohann, Arne

368

Evaluation of Addition of Alkaline Solutions on Overall Quality and Functionality of Normal and Pale, Soft, and Exudative (PSE) Pork Gels  

E-Print Network [OSTI]

. Normal (pH 5.6-5.9) and PSE (pH ? 5.4) loins were obtained and homogenized. Treatment solutions were: no added solution (control); double-distilled deionized water (ddW); 0.1, 0.2, and 0.3 pecent(w/v) SP; and 0.1, 0.2, and 0.3M potassium bicarbonate (PB...

Garza, Sonia Yvette

2011-02-22T23:59:59.000Z

369

Neutrinoless Double Beta Decay in Supersymmetric Seesaw model  

E-Print Network [OSTI]

Inspired by the recent HEIDELBERG-MOSCOW double beta decay experiment, we discuss the neutrinoless double beta decay in the supersymmetric seesaw model. Our numerical analysis indicates that we can naturally explain the data of the observed neutrinoless double beta decay, as well as that of the solar and atmospheric neutrino experiments with at least one Majorana-like sneutrino of middle energy scale in the model.

Tai-Fu Feng; Xue-Qian Li; Yan-An Luo

2002-09-26T23:59:59.000Z

370

Search for neutrinoless double beta decay with NEMO 3 experiment  

E-Print Network [OSTI]

NEMO 3 experiment is designed to search for neutrinoless double beta decay. It is located in the Modane Underground Laboratory (LSM) and has been taking data since February 2003. The half- lives of two neutrino beta decay have been measured for seven isotopes. No evidence of neutrinoless double beta decay has been found. The limits on both the half-lives of the neutrinoless double beta decay and the corresponding Majorana effective masses are derived

Zornitza Daraktchieva

2009-01-18T23:59:59.000Z

371

Neutrinoless double beta decay search with the NEMO 3 experiment  

E-Print Network [OSTI]

The NEMO 3 experiment searches for neutrinoless double beta decay and makes precision measurements of two-neutrino double beta decay in seven isotopes. The latest two-neutrino half-life results are presented, together with the limits on neutrinoless half-lives and the corresponding effective Majorana neutrino masses. Also given are the limits obtained on neutrinoless double beta decay mediated by Rp-violating SUSY, right-hand currents and different Majoron emission modes.

Irina Nasteva; for the NEMO 3 Collaboration

2008-10-03T23:59:59.000Z

372

Neutrinoless double beta decay search with the NEMO 3 experiment  

SciTech Connect (OSTI)

The NEMO 3 experiment searches for neutrinoless double beta decay and makes precision measurements of two-neutrino double beta decay in seven isotopes. The latest two-neutrino half-life results are presented, together with the limits on neutrinoless half-lives and the corresponding effective Majorana neutrino masses. Also given are the limits obtained on neutrinoless double beta decay mediated by R{sub p}-violating SUSY, right-hand currents and different Majoron emission modes.

Nasteva, Irina [Particle Physics Group, School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL (United Kingdom)

2008-11-23T23:59:59.000Z

373

Results of the NEMO-3 Double Beta Decay Experiment  

E-Print Network [OSTI]

The NEMO-3 experiment is searching for neutrinoless double beta decay for 2 main isotopes (100Mo and 82Se) and is studying the two-neutrino double beta decay of seven isotopes. The experiment has been taking data since 2003 and, up to the end of 2009, showed no evidence for neutrinoless double beta decay. Two 90 % CL lower limits on the half-lives of the transitions were obtained : T_{1/2}^{0\

Mathieu BONGRAND for the NEMO-3 Collaboration

2011-05-12T23:59:59.000Z

374

Neutrino mass spectrum and neutrinoless double beta decay  

E-Print Network [OSTI]

The relations between the effective Majorana mass of the electron neutrino, $m_{ee}$, responsible for neutrinoless double beta decay, and the neutrino oscillation parameters are considered. We show that for any specific oscillation pattern $m_{ee}$ can take any value (from zero to the existing upper bound) for normal mass hierarchy and it can have a minimum for inverse hierarchy. This means that oscillation experiments cannot fix in general $m_{ee}$. Mass ranges for $m_{ee}$ can be predicted in terms of oscillation parameters with additional assumptions about the level of degeneracy and the type of hierarchy of the neutrino mass spectrum. These predictions for $m_{ee}$ are systematically studied in the specific schemes of neutrino mass and flavor which explain the solar and atmospheric neutrino data. The contributions from individual mass eigenstates in terms of oscillation parameters have been quantified. We study the dependence of $m_{ee}$ on the non-oscillation parameters: the overall scale of the neutrino mass and the relative mass phases. We analyze how forthcoming oscillation experiments will improve the predictions for $m_{ee}$. On the basis of these studies we evaluate the discovery potential of future \\znbb decay searches. The role \\znbb decay searches will play in the reconstruction of the neutrino mass spectrum is clarified. The key scales of $m_{ee}$, which will lead to the discrimination among various schemes are: $m_{ee} \\sim 0.1$ eV and $m_{ee} \\sim 0.005$ eV.

H. V. Klapdor-Kleingrothaus; H. Päs; A. Y. Smirnov

2000-10-08T23:59:59.000Z

375

Surface-plasmons lasing in double-graphene-layer structures  

SciTech Connect (OSTI)

We consider the concept of injection terahertz lasers based on double-graphene-layer (double-GL) structures with metal surface-plasmon waveguide and study the conditions of their operation. The laser under consideration exploits the resonant radiative transitions between GLs. This enables the double-GL laser room temperature operation and the possibility of voltage tuning of the emission spectrum. We compare the characteristics of the double-GL lasers with the metal surface-plasmon waveguides with those of such laser with the metal-metal waveguides.

Dubinov, A. A. [Research Institute for Electrical Communication, Tohoku University, Sendai 980-8577 (Japan); Institute for Physics of Microstructures of Russian Academy of Sciences, and Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603950 (Russian Federation); Aleshkin, V. Ya. [Institute for Physics of Microstructures of Russian Academy of Sciences, and Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod 603950 (Russian Federation); Ryzhii, V. [Research Institute for Electrical Communication, Tohoku University, Sendai 980-8577 (Japan); Center for Photonics and Infrared Engineering, Bauman Moscow State Technical University, Moscow 105005 (Russian Federation); Shur, M. S. [Department of Electrical, Electronics, and System Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180 (United States); Otsuji, T. [Research Institute for Electrical Communication, Tohoku University, Sendai 980-8577 (Japan)

2014-01-28T23:59:59.000Z

376

Half-lives of Double $?^+$-decay with Two Neutrinos  

E-Print Network [OSTI]

Nuclear double $\\beta ^-$-decays with two neutrinos were observed for many years and a systematic law describing the relation between their half-lives and decay energies was also proposed recently [Phys. Rev. C89, 064603 (2014)]. However, double $\\beta ^+$-decay ($\\beta ^+\\beta^+)$ with emission of both two positrons and two neutrinos has not been observed up to date. In this article, we perform a systematic analysis on the candidates of double $\\beta ^+$-decay, based on the 2012 nuclear mass table. Eight nuclei are found to be the good candidates for double $\\beta ^+$-decay and their half-lives are predicted according to the generalization of the systematic law to double $\\beta ^+$-decay. As far as we know, there is no theoretical result on double $\\beta ^+$-decay of nucleus $^{154}Dy$ and our result is the first prediction on this nucleus. This is also the first complete research on eight double $\\beta ^+$-decay candidates based on the available data of nuclear masses. It is expected that the calculated half-lives of double $\\beta ^+$-decay in this article will be useful for future experimental search of double $\\beta ^+$-decay.

Yuejiao Ren; Zhongzhou Ren

2015-01-07T23:59:59.000Z

377

Electromagnetically Induced Transparency in a Double Well Atomic Josephson Junction  

E-Print Network [OSTI]

observation of these Josephson junction resonances. 2.dressed Bose condensed Josephson junction Let us consider ain a Double Well Atomic Josephson Junction J.O. Weatherall

Weatherall, J. O.; Search, C. P.

2009-01-01T23:59:59.000Z

378

Neutrinoless double beta decay can constrain neutrino dark matter  

E-Print Network [OSTI]

We examine how constraints can be placed on the neutrino component of dark matter by an accurate measurement of neutrinoless double beta ($0\

V. Barger; S. L. Glashow; D. Marfatia; K. Whisnant

2002-02-26T23:59:59.000Z

379

Majorana Neutrino Masses from Neutrinoless Double Beta Decay and Cosmology  

E-Print Network [OSTI]

When three Majorana neutrinos describe the solar and atmospheric neutrino data via oscillations, a nonzero measurement of neutrinoless double beta ($0\

V. Barger; K. Whisnant

1999-04-08T23:59:59.000Z

380

A Search for Neutrinoless Double Beta Decay of Te-130.  

E-Print Network [OSTI]

??This dissertation describes an experimental search for neutrinoless double beta (0???) decay of 130Te. An observation of 0??? decay would establish that neutrinos are Majorana… (more)

Bryant, Adam Douglas

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

2005 Double white lines on bills of Razorbill 103 DOUBLE WHITE LINES ON THE BILL OF THE  

E-Print Network [OSTI]

2005 Double white lines on bills of Razorbill 103 DOUBLE WHITE LINES ON THE BILL OF THE RAZORBILL.L., MUZAFFAR S.B. & JONES I.L. Lavers J.L., Muzaffar S.B. & Jones I.L. 2006. Double white lines on the bill Seabirds 7(3): 103-108. One of the diagnostic features of the Razorbill Alca torda is the distinct white

Jones, Ian L.

382

Double beta decay and neutrino mass models  

E-Print Network [OSTI]

Neutrinoless double beta decay allows to constrain lepton number violating extensions of the standard model. If neutrinos are Majorana particles, the mass mechanism will always contribute to the decay rate, however, it is not a priori guaranteed to be the dominant contribution in all models. Here, we discuss whether the mass mechanism dominates or not from the theory point of view. We classify all possible (scalar-mediated) short-range contributions to the decay rate according to the loop level, at which the corresponding models will generate Majorana neutrino masses, and discuss the expected relative size of the different contributions to the decay rate in each class. We also work out the phenomenology of one concrete 2-loop model in which both, mass mechanism and short-range diagram, might lead to competitive contributions, in some detail.

Helo, J C; Ota, T; Santos, F A Pereira dos

2015-01-01T23:59:59.000Z

383

Neutrinoless Double Beta Decay with SNO+  

E-Print Network [OSTI]

SNO+ will search for neutrinoless double beta decay by loading 780 tonnes of linear alkylbenzene liquid scintillator with O(tonne) of neodymium. Using natural Nd at 0.1% loading will provide 43.7 kg of 150Nd given its 5.6% abundance and allow the experiment to reach a sensitivity to the effective neutrino mass of 100-200 meV at 90% C.L in a 3 year run. The SNO+ detector has ultra low backgrounds with 7000 tonnes of water shielding and self-shielding of the scintillator. Distillation and several other purification techniques will be used with the aim of achieving Borexino levels of backgrounds. The experiment is fully funded and data taking with light-water will commence in 2012 with scintillator data following in 2013.

J. Hartnell; for the SNO+ collaboration

2012-01-30T23:59:59.000Z

384

Correlations and the neutrinoless double beta decay  

SciTech Connect (OSTI)

We explore the influence of the deformation on the nuclear matrix elements of the neutrinoless double beta decay (NME), concluding that the difference in deformation -or more generally on the amount of quadrupole correlations- between parent and grand daughter nuclei quenchs strongly the decay. We discuss how varies the nuclear matrix element of {sup 76}Ge decay when the wave functions of the two nuclei involved in the transition are constrained to reproduce the experimental occupancies. In the Interacting Shell Model description the value of the NME is enhanced about 15% compared to previous calculations, whereas in the QRPA the NME's are reduced by 20%-30%, thus, the discrepancies between both approaches diminish.

Menendez, J.; Poves, A. [Departamento de Fisica Teorica, and IFT, UAM-CSIC, Universidad Autonoma de Madrid, 28049-Madrid (Spain); Caurier, E.; Nowacki, F. [IPHC, IN2P3-CNRS/Universite Louis Pasteur, 67037-Strasbourg (France)

2009-11-09T23:59:59.000Z

385

Experimental searches of neutrinoless double beta decay  

E-Print Network [OSTI]

Neutrinoless double decay is a unique probe for lepton number conservation and neutrino properties. It allows to investigate the Dirac/Majorana nature of the neutrinos and their absolute mass scale (hierarchy problem) with unprecedented sensitivity. A number of experiments are presently under preparation to cover the quasi-degenerate region of the neutrino mass spectrum. Improved sensitivities are however required to sound the so-called inverted hierarchy region. This is a real challenge faced by a number of new proposed projects, based either on large expansions of the present experiments or on new ideas top improve the technical performance or reduce the background contributions. A review of the most relevant ongoing experiments is given. The most relevant parameters contributing to the experimental sensitivity are discussed and a critical comparison of the future projects is proposed.

Oliviero Cremonesi

2012-12-19T23:59:59.000Z

386

Double Shell Tank (DST) Utilities Specification  

SciTech Connect (OSTI)

This specification establishes the performance requirements and provides the references to the requisite codes and standards to he applied during the design of the Double-Shell Tank (DST) Utilities Subsystems that support the first phase of waste feed delivery (WFD). The DST Utilities Subsystems provide electrical power, raw/potable water, and service/instrument air to the equipment and structures used to transfer low-activity waste (LAW) and high-level waste (HLW) to designated DST staging tanks. The DST Utilities Subsystems also support the equipment and structures used to deliver blended LAW and HLW feed from these staging tanks to the River Protection Project (RPP) Privatization Contractor facility where the waste will be immobilized. This specification is intended to be the basis for new projects/installations. This specification is not intended to retroactively affect previously established project design criteria without specific direction by the program.

SUSIENE, W.T.

2000-04-27T23:59:59.000Z

387

The Double Copy Structure of Soft Gravitons  

E-Print Network [OSTI]

The subleading corrections to factorization theorems for soft bremsstrahlung in nonabelian gauge theories and gravity are investigated. Building on recent results, we write the action of the angular momentum operators on scattering amplitudes as derivatives with respect to the Mandelstam invariants to uncover a double copy structure in the contribution of the soft graviton to the amplitude, both in the leading term and the first correction. Using our approach, we study Gribov's theorem as extended to nonabelian gauge theories and gravity by Lipatov, and find that subleading corrections can be obtained from those to Low's theorem by dropping the terms with derivatives with respect to the center-of-mass energy, which are suppressed at high energies. In this case, the emitted gravitons are not necessarily soft.

Agustin Sabio Vera; Miguel A. Vazquez-Mozo

2014-12-11T23:59:59.000Z

388

Collaborative research: Dynamics of electrostatic solitary waves and their effects on current layers  

SciTech Connect (OSTI)

The project has accomplished the following achievements including the goals outlined in the original proposal. Generation and measurements of Debye-scale electron holes in laboratory: We have generated by beam injections electron solitary waves in the LAPD experiments. The measurements were made possible by the fabrication of the state-of-the-art microprobes at UCLA to measure Debye-scale electric fields [Chiang et al., 2011]. We obtained a result that challenged the state of knowledge about electron hole generation. We found that the electron holes were not due to two-stream instability, but generated by a current-driven instability that also generated whistler-mode waves [Lefebvre et al., 2011, 2010b]. Most of the grant supported a young research scientist Bertrand Lefebvre who led the dissemination of the laboratory experimental results. In addition to two publications, our work relevant to the laboratory experiments on electron holes has resulted in 7 invited talks [Chen, 2007, 2009; Pickett et al., 2009a; Lefebvre et al., 2010a; Pickett et al., 2010; Chen et al., 2011c, b] (including those given by the co-I Jolene Pickett) and 2 contributed talks [Lefebvre et al., 2009b, a]. Discovery of elecctron phase-space-hole structure in the reconnection electron layer: Our theoretical analyses and simulations under this project led to the discovery of an inversion electric field layer whose phase-space signature is an electron hole within the electron diffusion layer in 2D anti-parallel reconnection [Chen et al., 2011a]. We carried out particle tracing studies to understand the electron orbits that result in the phase-space hole structure. Most importantly, we showed that the current density in the electron layer is limited in collisionless reconnection with negligible guide field by the cyclotron turning of meandering electrons. Comparison of electrostatic solitary waves in current layers observed by Cluster and in LAPD: We compared the ESWs observed in a supersubstorm by the Cluster spacecraft and those measured in LAPD. One of the similarities in the characteristics of ESWs observed in space and in LAPD is that the time duration tends to be approximately the inverse of the electron plasma frequency [Pickett et al., 2009b]. Discovery of suprathermal electron bursts inside a series of magnetic islands: Our effort in examining the roles of ESWs in reconnection current layers resulted in the serendipitous discovery that was published in Nature Physics. In earth’s magnetosphere, we observed through the measurements from the four Cluster spacecraft, a series of magnetic islands and suprathermal electron bursts within the islands. The islands were identified to be effectively acceleration sites for electrons [Chen et al., 2008, 2009].

Chen, Li-Jen

2014-04-18T23:59:59.000Z

389

Fluid simulation of an electrostatic plasma sheath with two species of positive ions and charged nanoparticles  

SciTech Connect (OSTI)

One-dimensional fluid simulations are used to study the dynamics of an electrostatic plasma sheath containing nanosized dust grains and two species of positive ions, i.e., He{sup +} and Ar{sup +}. The impacts of the concentration of each species, the velocity at the sheath edge of the ions, and the bias voltage of the substrate, on the spatial distribution of the velocity and number density of the plasma particles, and the incident fluxes of the ions on the substrate, are investigated. The numerical results show that the sheath thickness increases with increasing {sigma}, the density ratio of He{sup +} ions to Ar{sup +} ions at the sheath edge. For nanosized dust particles considered in this work, the dominant forces are the ion drag and the electric force and the effects of the neutral drag and gravity are negligible. Due to enhancement of the ion drag force and the electric force, the dust velocity increases and, consequently, the dust number density decreases as the concentration at the sheath edge of Ar{sup +} ions is increased. For the same velocity and number density at the sheath edge, the number density of Ar{sup +} ions near the wall is larger than that of He{sup +} ions, but their incident fluxes are the same. The maximum in the dust number density increases with the velocity of Ar{sup +} ions at the sheath edge, but it weakly changes with the Mach number of He{sup +} ions, except for large values of {sigma}. The position of the maximum dust number density initially decreases very quickly with increasing the velocity at the sheath edge of the ions from small values, but then at larger values it changes quite slowly. The differences in the sheath parameters for different values of {sigma} disappear at some values of the velocity at the sheath edge of the ions and dust particles. The incident flux of the ions are independent of the bias voltage of the substrate, but their kinetic energy is equal to the bias potential.

Foroutan, G. [Department of Physics, Faculty of Science, Sahand University of Technology, 51335-1996 Tabriz (Iran, Islamic Republic of); Nanostructure Material Research Center, Sahand University of Technology, 51335-1996 Tabriz (Iran, Islamic Republic of) and School of Physics, University of Sydney, New South Wales 2006, Sydney (Australia)

2010-12-15T23:59:59.000Z

390

Neutrinoless Double Beta Decay in Gauge Theories  

E-Print Network [OSTI]

Neutrinoless double beta decay is a very important process both from the particle and nuclear physics point of view. Its observation will severely constrain the existing models and signal that the neutrinos are massive Majorana particles. From the elementary particle point of view it pops up in almost every model. In addition to the traditional mechanisms, like the neutrino mass, the admixture of right handed currents etc, it may occur due to the R-parity violating supersymmetric (SUSY) interactions. From the nuclear physics point of view it is challenging, because: 1) The relevant nuclei have complicated nuclear structure. 2) The energetically allowed transitions are exhaust a small part of all the strength. 3) One must cope with the short distance behavior of the transition operators, especially when the intermediate particles are heavy (eg in SUSY models). Thus novel effects, like the double beta decay of pions in flight between nucleons, have to be considered. 4) The intermediate momenta involved are about 100 MeV. Thus one has to take into account possible momentum dependent terms in the nucleon current. We find that, for the mass mechanism, such modifications of the nucleon current for light neutrinos reduce the nuclear matrix elements by about 25 per cent, almost regardless of the nuclear model. In the case of heavy neutrinos the effect is much larger and model dependent. Taking the above effects into account, the available nuclear matrix elements for the experimentally interesting nuclei A = 76, 82, 96, 100, 116, 128, 130, 136 and 150 and the experimental limits on the life times we have extracted new stringent limits on the average neutrino mass and on the R-parity violating coupling for various SUSY models.

J. D. Vergados

1999-07-12T23:59:59.000Z

391

Significant neutrinoless double beta decay with quasi-Dirac neutrinos  

E-Print Network [OSTI]

A significant signal of neutrinoless double beta decay can be consistent with the existence of light quasi-Dirac neutrinos. To demonstrate this possibility, we consider a realistic model where the neutrino masses and the neutrinoless double beta decay can be simultaneously generated after a Peccei-Quinn symmetry breaking.

Pei-Hong Gu

2012-09-13T23:59:59.000Z

392

One Year of Evidence for Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

The present experimental status in the search for neutrinoless double beta decay is reviewed, with emphasis on the first indication for neutrinoless double beta decay found in the HEIDELBERG-MOSCOW experiment, giving first evidence for lepton number violation and a Majorana nature of the neutrinos. Future perspectives of the field are briefly outlined.

H. V. Klapdor-Kleingrothaus

2003-02-26T23:59:59.000Z

393

Support of Evidence for Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

Indirect support for the evidence of neutrinoless double beta decay reported recently, is obtained by analysis of other Ge double beta experiments, which yield independent information on the background in the region of Q_(beta-beta). Some statistical features as well as background simulations with GEANT 4 of the HEIDELBERG-MOSCOW experiment are discussed which disprove recent criticism.

H. V. Klapdor-Kleingrothaus; A. Dietz; I. V. Krivosheina; Ch. Doerr; C. Tomei

2003-12-12T23:59:59.000Z

394

Deep subwavelength plasmonic waveguide switch in double graphene layer structure  

E-Print Network [OSTI]

Deep subwavelength plasmonic waveguide switch in double graphene layer structure Hideo Iizuka in double graphene layer structure Hideo Iizuka1,a) and Shanhui Fan2,b) 1 Toyota Central Research December 2013) Graphene provides excellent prospects of the dynamic tunability, low propagation loss

Fan, Shanhui

395

Strategies for Next Generation Neutrinoless Double-Beta Decay Experiments  

E-Print Network [OSTI]

Strategies for Next Generation Neutrinoless Double-Beta Decay Experiments F. T. Avignone III A brief discussion of the connection between neutrino oscillation data and predictions of neutrinoless the necessary tools for comparative evaluation. 1. INTRODUCTION Neutrinoless double-beta (0)-decay has been

396

Neutrinoless double-beta decay. A brief review  

E-Print Network [OSTI]

In this brief review we discuss the generation of Majorana neutrino masses through the see-saw mechanism, the theory of neutrinoless double-beta decay, the implications of neutrino oscillation data for the effective Majorana mass, taking into account the recent Daya Bay measurement of theta_13, and the interpretation of the results of neutrinoless double-beta decay experiments.

S. M. Bilenky; C. Giunti

2012-03-23T23:59:59.000Z

397

Method for double-sided processing of thin film transistors  

DOE Patents [OSTI]

This invention provides methods for fabricating thin film electronic devices with both front- and backside processing capabilities. Using these methods, high temperature processing steps may be carried out during both frontside and backside processing. The methods are well-suited for fabricating back-gate and double-gate field effect transistors, double-sided bipolar transistors and 3D integrated circuits.

Yuan, Hao-Chih (Madison, WI); Wang, Guogong (Madison, WI); Eriksson, Mark A. (Madison, WI); Evans, Paul G. (Madison, WI); Lagally, Max G. (Madison, WI); Ma, Zhenqiang (Middleton, WI)

2008-04-08T23:59:59.000Z

398

Fundamental measure theory for the electric double layer: implications for blue-energy harvesting and water desalination  

E-Print Network [OSTI]

Capacitive mixing (CAPMIX) and capacitive deionization (CDI) are promising candidates for harvesting clean, renewable energy and for the energy efficient production of potable water, respectively. Both CAPMIX and CDI involve water-immersed porous carbon (supercapacitors) electrodes at voltages of the order of hundreds of millivolts, such that counter-ionic packing is important for the electric double layer (EDL) which forms near the surface of these porous materials. Thus, we propose a density functional theory (DFT) to model the EDL, where the White-Bear mark II fundamental measure theory functional is combined with a mean-field Coulombic and a mean spherical approximation-type correction to describe the interplay between dense packing and electrostatics, in good agreement with molecular dynamics simulations. We discuss the concentration-dependent potential rise due to changes in the chemical potential in capacitors in the context of an over-ideal theoretical description and its impact on energy harvesting and water desalination. Compared to less elaborate mean-field models our DFT calculations reveal a higher work output for blue-energy cycles and a higher energy demand for desalination cycles.

Andreas Härtel; Mathijs Janssen; Sela Samin; René van Roij

2015-03-06T23:59:59.000Z

399

Normal Agricultural Operations and Dove Hunting in Texas  

E-Print Network [OSTI]

: baiting Doves are migratory birds, and dove hunting is therefore regulated by the Federal Migratory Bird Treaty Act, which specifically prohibits baiting. Under federal law, baiting is the direct or indirect placing, exposing, depositing, distributing... considers this acceptable to hunt over. A problem arises, however, as to what constitutes a ?normal agricultural operation.? For the purpose of the Migratory Bird Treaty Act ?normal agricultural operation? means a normal agricultural planting...

Redmon, Larry

2009-06-01T23:59:59.000Z

400

Electrostatic precipitation of condensed acid mist: Second quarterly technical progress report, December 1, 1988--February 28, 1989  

SciTech Connect (OSTI)

This report covers the project scope and structure for developing and demonstrating a compact, wet electrostatic collector for condensed acid mist in power plant flue gas. In order to accomplish this goal, the objectives to be met are: (1) a laboratory-version of the WESP (Wet Electrostatic Precipitator) must be fabricated, (2) the WESP performance must be optimized through laboratory tests with a nonvolatile simulant aerosol having a size distribution similar to the acid mist, (3) the WESP concept must be proven by demonstrating adequate collection of actual acid mist in a pilot coal combustion facility under conditions simulating a full-scale power plant burning high-sulfur coal, (4) a computer model of the WESP process must be developed to assist in the process optimization, interpretation of test results, and extrapolation to full scale, and (5) utility participation must be solicited in a follow-on demonstration of the WESP concept at a full-scale power plant. Progress in laboratory testing and collection efficiency is described. 5 refs., 2 figs.

Dahlin, R.S.

1989-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Electrostatic precipitation of condensed acid mist: First quarterly technical progress report, September 1 to November 30, 1988  

SciTech Connect (OSTI)

This report covers the project scope and structure for developing and demonstrating a compact, wet electrostatic collector for condensed acid mist in power plant flue gas. In order to accomplish this goal, the objectives to be met are: (1) a laboratory-version of the WESP (Wet Electrostatic Precipitator) must be fabricated. (2) the WESP performance must be optimized through laboratory tests with a nonvolatile simulant aerosol having a size distribution similar to the acid mist. (3) the WESP concept must be proven by demonstrating adequate collection of actual acid mist in a pilot coal combustion facility under conditions simulating a full-scale power plant burning high-sulfur coal. (4) a computer model of the WESP process must be developed to assist in the process optimization, interpretation of test results, and extrapolation to full scale. (5) Utility participation must be solicited in a follow-on demonstration of the WESP concept at a full-scale power plant. 5 refs., 2 figs. (JL)

Dahlin, R.S.

1988-01-01T23:59:59.000Z

402

SciTech Connect: Effect of radiation on normal hematopoiesis...  

Office of Scientific and Technical Information (OSTI)

Effect of radiation on normal hematopoiesis and on viral induced cancer of the hematopoietic system. Technical progress report, August 1, 1973--July 31, 1974 Citation Details...

403

asymptotic normalization coefficients: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

zeilbergtokhniotSameSexMarriages Zeilberger, Doron 114 Journal of Multivariate Analysis 74, 49 68 (2000) Asymptotic Normality of Posterior Distributions for...

404

asymptotic normalization coefficient: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

zeilbergtokhniotSameSexMarriages Zeilberger, Doron 114 Journal of Multivariate Analysis 74, 49 68 (2000) Asymptotic Normality of Posterior Distributions for...

405

adjacent normal skin: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

tangential mechanics SAI mechanoreceptor depth actuator strain energy density James Biggs; Mandayam A. Srinivasan 5 Expression and function of small RNAs in normal and...

406

Used Nuclear Fuel Loading and Structural Performance Under Normal...  

Energy Savers [EERE]

Used Nuclear Fuel Loading and Structural Performance Under Normal Conditions of Transport - Demonstration of Approach and Results of Used Fuel Performance Characterization Used...

407

E-Print Network 3.0 - astrocytes normalizes revascularization...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

search results for: astrocytes normalizes revascularization Page: << < 1 2 3 4 5 > >> 1 Brain Research 896 (2001) 8695 www.elsevier.comlocatebres Summary: Astrocytes are an ideal...

408

allowing normal bone: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

assays. Correlations of fluoride levels between normal bone near the Nancy Medina; Chester W. Douglass; Gary M. Whitford; Robert N. Hoover; Thomas R. Fears 6 Differential...

409

Data Collection and Normalization for the Development of Cost...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

This chapter discusses considerations for data collection and normalization. g4301-1chp19.pdf -- PDF Document, 21 KB Writer: John Makepeace Subjects: Administration Management...

410

Efficient and simpler method to construct normalized cDNA libraries with improved representations of full-length cDNAs  

DOE Patents [OSTI]

This invention provides a method to normalize a cDNA library comprising: (a) constructing a directionally cloned library containing cDNA inserts wherein the insert is capable of being amplified by polymerase chain reaction; (b) converting a double-stranded cDNA library into single-stranded DNA circles; (c) generating single-stranded nucleic acid molecules complementary to the single-stranded DNA circles converted in step (b) by polymerase chain reaction with appropriate primers; (d) hybridizing the single-stranded DNA circles converted in step (b) with the complementary single-stranded nucleic acid molecules generated in step (c) to produce partial duplexes to an appropriate Cot; and (e) separating the unhybridized single-stranded DNA circles from the hybridized DNA circles, thereby generating a normalized cDNA library. This invention also provides a method to normalize a cDNA library wherein the generating of single-stranded nucleic acid molecules complementary to the single-stranded DNA circles converted in step (b) is by excising cDNA inserts from the double-stranded cDNA library; purifying the cDNA inserts from cloning vectors; and digesting the cDNA inserts with an exonuclease. This invention further provides a method to construct a subtractive cDNA library following the steps described above. This invention further provides normalized and/or subtractive cDNA libraries generated by the above methods. 25 figs.

Soares, M.B.; Fatima Bonaldo, M. de

1998-12-08T23:59:59.000Z

411

Efficient and simpler method to construct normalized cDNA libraries with improved representations of full-length cDNAs  

DOE Patents [OSTI]

This invention provides a method to normalize a cDNA library comprising: (a) constructing a directionally cloned library containing cDNA inserts wherein the insert is capable of being amplified by polymerase chain reaction; (b) converting a double-stranded cDNA library into single-stranded DNA circles; (c) generating single-stranded nucleic acid molecules complementary to the single-stranded DNA circles converted in step (b) by polymerase chain reaction with appropriate primers; (d) hybridizing the single-stranded DNA circles converted in step (b) with the complementary single-stranded nucleic acid molecules generated in step (c) to produce partial duplexes to an appropriate Cot; and (e) separating the unhybridized single-stranded DNA circles from the hybridized DNA circles, thereby generating a normalized cDNA library. This invention also provides a method to normalize a cDNA library wherein the generating of single-stranded nucleic acid molecules complementary to the single-stranded DNA circles converted in step (b) is by excising cDNA inserts from the double-stranded cDNA library; purifying the cDNA inserts from cloning vectors; and digesting the cDNA inserts with an exonuclease. This invention further provides a method to construct a subtractive cDNA library following the steps described above. This invention further provides normalized and/or subtractive cDNA libraries generated by the above methods.

Soares, Marcelo Bento (New York, NY); Bonaldo, Maria de Fatima (New York, NY)

1998-01-01T23:59:59.000Z

412

Pionic contribution to neutrinoless double beta decay  

SciTech Connect (OSTI)

It is well known that neutrinoless double decay is going to play a crucial role in settling the neutrino properties, which cannot be extracted from the neutrino oscillation data. It is, in particular, expected to settle the absolute scale of neutrino mass and determine whether the neutrinos are Majorana particles, i.e. they coincide with their own antiparticles. In order to extract the average neutrino mass from the data, one must be able to estimate the contribution of all possible high mass intermediate particles. The latter, which occur in practically all extensions of the standard model, can, in principle, be differentiated from the usual mass term, if data from various targets are available. One, however, must first be able to reliably calculate the corresponding nuclear matrix elements. Such calculations are extremely difficult since the effective transition operators are very short ranged. For such operators processes like pionic contributions, which are usually negligible, turn out to be dominant. We study such an effect in a nonrelativistic quark model for the pion and the nucleon.

Vergados, J. D. [Physics Department, University of Ioannina, Ioannina, GR 451 10 (Greece); Theory Division, CERN, Geneva (Switzerland); Faessler, Amand [Institute fuer Theoretische Physik, Universitaet Tuebingen (Germany); Toki, H. [RCNP, Osaka University, Osaka, 567-0047 (Japan)

2010-02-01T23:59:59.000Z

413

Double-duct liquid metal magnetohydrodynamic engine  

DOE Patents [OSTI]

An internal combustion, liquid metal (LM) magnetohydrodynamic (MHD) engine and an alternating current (AC) magnetohydrodynamic generator, are used in combination to provide useful AC electric energy output. The engine design has four pistons and a double duct configuration, with each duct containing sodium potassium liquid metal confined between free pistons located at either end of the duct. The liquid metal is forced to flow back and forth in the duct by the movement of the pistons, which are alternatively driven by an internal combustion process. In the MHD generator, the two LM-MHD ducts pass in close proximity through a Hartmann duct with output transformer. AC power is produced by operating the engine with the liquid metal in the two generator ducts always flowing in counter directions. The amount of liquid metal maintained in the ducts may be varied. This provides a variable stroke length for the pistons. The engine/generator provides variable AC power at variable frequencies that correspond to the power demands of the vehicular propulsion. Also the engine should maintain nearly constant efficiency throughout the range of power usage. Automobiles and trucks could be powered by the invention, with no transmission or power converter devices being required.

Haaland, Carsten M. (Oak Ridge, TN)

1997-01-01T23:59:59.000Z

414

Double-duct liquid metal magnetohydrodynamic engine  

DOE Patents [OSTI]

An internal combustion, liquid metal (LM) magnetohydrodynamic (MHD) engine and an alternating current (AC) magnetohydrodynamic generator, are used in combination to provide useful AC electric energy output. The engine design has-four pistons and a double duct configuration, with each duct containing sodium potassium liquid metal confined between free pistons located at either end of the duct. The liquid metal is forced to flow back and forth in the duct by the movement of the pistons, which are alternatively driven by an internal combustion process. In the MHD generator, the two LM-MHD ducts pass in close proximity through a Hartmann duct with output transformer. AC power is produced by operating the engine with the liquid metal in the two generator ducts always flowing in counter directions. The amount of liquid metal maintained in the ducts may be varied. This provides a variable stroke length for the pistons. The engine/generator provides variable AC power at variable frequencies that correspond to the power demands of the vehicular propulsion. Also the engine should maintain nearly constant efficiency throughout the range of power usage. Automobiles and trucks could be powered by the invention, with no transmission or power converter devices being required.

Haaland, Carsten M. (Oak Ridge, TN)

1995-01-01T23:59:59.000Z

415

First results on neutrinoless double beta decay of Te-130 with the calorimetric cuoricino experiment  

E-Print Network [OSTI]

Evidence for Neutrinoless Double Beta Decay” arXiv:hep-on “Evidence for neutrinoless double beta decay”- arXiv:hep-Results on Neutrinoless Double Beta Decay of 130 Te with the

2003-01-01T23:59:59.000Z

416

Summary of recent experiments on focusing of target-normal-sheath-accelerated proton beam with a stack of conducting foils  

SciTech Connect (OSTI)

We present a summary of recent experiments on focusing of laser target-normal-sheath-accelerated (TNSA) proton beam with a stack of thin conducting foils. The experiments were performed using the Phelix laser (GSI-Darmstadt) and the Titan laser, Lawrence Livermore National Laboratory. The phenomena consistent with self-collimation (or weak self-focusing) of TNSA protons were experimentally observed for the first time at the Phelix laser user facility, in a specially engineered structure ('lens') consisting of a stack of 300 thin aluminum foils separated by 50??m vacuum gaps. Follow up experiments using the Titan laser obtained results consistent with the collimation/focusing observed in the initial experiments using the Phelix. The Titan experiments employed improved, 25??m- and 50??m-gap targets and the new fine mesh diagnostic. All the experiments were carried out in a “passive environment,” i.e., no external fields were applied, and no neutralization plasma or injection of secondary charged particles was imposed. A plausible interpretation of the observed phenomena is that the combination of magnetic self-pinch forces generated by the beam current together with the simultaneous reduction of the repulsive electrostatic forces due to the conducting foils inhibits radial expansion of the beam.

Ni, P. A. [Luxim Corporation, Sunnyvale, California 94024 (United States) [Luxim Corporation, Sunnyvale, California 94024 (United States); Lawrence Berkeley National Laboratory, California 94720 (United States); Alexander, N. [General Atomics, San Diego, California 92121 (United States)] [General Atomics, San Diego, California 92121 (United States); Barnard, J. J.; Lund, S. M. [Lawrence Livermore National Laboratory, California 94550 (United States)] [Lawrence Livermore National Laboratory, California 94550 (United States)

2014-05-15T23:59:59.000Z

417

Half-lives of Double $\\beta ^+$-decay with Two Neutrinos  

E-Print Network [OSTI]

Nuclear double $\\beta ^-$-decays with two neutrinos were observed for many years and a systematic law describing the relation between their half-lives and decay energies was also proposed recently [Phys. Rev. C89, 064603 (2014)]. However, double $\\beta ^+$-decay ($\\beta ^+\\beta^+)$ with emission of both two positrons and two neutrinos has not been observed up to date. In this article, we perform a systematic analysis on the candidates of double $\\beta ^+$-decay, based on the 2012 nuclear mass table. Eight nuclei are found to be the good candidates for double $\\beta ^+$-decay and their half-lives are predicted according to the generalization of the systematic law to double $\\beta ^+$-decay. As far as we know, there is no theoretical result on double $\\beta ^+$-decay of nucleus $^{154}Dy$ and our result is the first prediction on this nucleus. This is also the first complete research on eight double $\\beta ^+$-decay candidates based on the available data of nuclear masses. It is expected that the calculated hal...

Ren, Yuejiao

2015-01-01T23:59:59.000Z

418

Passive air cooling of liquid metal-cooled reactor with double vessel leak accommodation capability  

DOE Patents [OSTI]

A passive and inherent shutdown heat removal method with a backup air flow path which allows decay heat removal following a postulated double vessel leak event in a liquid metal-cooled nuclear reactor is disclosed. The improved reactor design incorporates the following features: (1) isolation capability of the reactor cavity environment in the event that simultaneous leaks develop in both the reactor and containment vessels; (2) a reactor silo liner tank which insulates the concrete silo from the leaked sodium, thereby preserving the silo`s structural integrity; and (3) a second, independent air cooling flow path via tubes submerged in the leaked sodium which will maintain shutdown heat removal after the normal flow path has been isolated. 5 figures.

Hunsbedt, A.; Boardman, C.E.

1995-04-11T23:59:59.000Z

419

Passive air cooling of liquid metal-cooled reactor with double vessel leak accommodation capability  

DOE Patents [OSTI]

A passive and inherent shutdown heat removal method with a backup air flow path which allows decay heat removal following a postulated double vessel leak event in a liquid metal-cooled nuclear reactor. The improved reactor design incorporates the following features: (1) isolation capability of the reactor cavity environment in the event that simultaneous leaks develop in both the reactor and containment vessels; (2) a reactor silo liner tank which insulates the concrete silo from the leaked sodium, thereby preserving the silo's structural integrity; and (3) a second, independent air cooling flow path via tubes submerged in the leaked sodium which will maintain shutdown heat removal after the normal flow path has been isolated.

Hunsbedt, Anstein (Los Gatos, CA); Boardman, Charles E. (Saratoga, CA)

1995-01-01T23:59:59.000Z

420

Enhancement of proton acceleration field in laser double-layer target interaction  

SciTech Connect (OSTI)

A mechanism is proposed to enhance a proton acceleration field in laser plasma interaction. A double-layer plasma with different densities is illuminated by an intense short pulse. Electrons are accelerated to a high energy in the first layer by the wakefield. The electrons accelerated by the laser wakefield induce the enhanced target normal sheath (TNSA) and breakout afterburner (BOA) accelerations through the second layer. The maximum proton energy reaches about 1 GeV, and the total charge with an energy higher than 100 MeV is about several tens of ?C/?m. Both the acceleration gradient and laser energy transfer efficiency are higher than those in single-target-based TNSA or BOA. The model has been verified by 2.5D-PIC simulations.

Gu, Y. J. [Applied Ion Beam Physics Laboratory, Key Laboratory of the Ministry of Education, Institute of Modern Physics, Fudan University, Shanghai 200433 (China) [Applied Ion Beam Physics Laboratory, Key Laboratory of the Ministry of Education, Institute of Modern Physics, Fudan University, Shanghai 200433 (China); Department of Advanced Interdisciplinary Sciences, Utsunomiya University, Yohtoh 7-1-2, Utsunomiya 321-8585 (Japan); Kong, Q.; Li, X. F.; Yu, Q.; Wang, P. X. [Applied Ion Beam Physics Laboratory, Key Laboratory of the Ministry of Education, Institute of Modern Physics, Fudan University, Shanghai 200433 (China)] [Applied Ion Beam Physics Laboratory, Key Laboratory of the Ministry of Education, Institute of Modern Physics, Fudan University, Shanghai 200433 (China); Kawata, S.; Izumiyama, T. [Department of Advanced Interdisciplinary Sciences, Utsunomiya University, Yohtoh 7-1-2, Utsunomiya 321-8585 (Japan)] [Department of Advanced Interdisciplinary Sciences, Utsunomiya University, Yohtoh 7-1-2, Utsunomiya 321-8585 (Japan); Ma, Y. Y. [College of Science, National University of Defense Technology, Changsha 410073 (China)] [College of Science, National University of Defense Technology, Changsha 410073 (China)

2013-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Experimental research of double beta decay of atomic nuclei  

E-Print Network [OSTI]

Results of several double beta decay experiments, performed with the help of low background crystal scintillators, are presented. In particular, the half-life value of the two-neutrino double beta decay of 116-Cd has been measured as 2.9 10^{19} yr, and the new half-life limit on the neutrinoless double beta decay of 116-Cd has been established as >1.7 10^{23} yr at 90%, which corresponds to a restriction on the neutrino mass <1.7 eV. New half-life bounds on the level of 10^{17}-10^{21} yr were set for double beta processes in 64-Zn, 70-Zn, 106-Cd, 108-Cd, 114-Cd, 136-Ce, 138-Ce, 142-Ce, 160-Gd, 180-W, and 186-W by using low-background CdWO4, GSO, and ZnWO4 crystal scintillators. The claim of discovery of the neutrinoless double beta decay of 76-Ge [Mod. Phys. Lett. A 16 (2001) 2409] was analyzed. The demands of the future high sensitivity double beta decay experiments, aiming to observe the neutrinoless double beta decay or to advance restrictions on the neutrino mass to < 0.01 eV, were considered. Requirements for their sensitivity and discovery potential were formulated. Two projects of double beta experiments with a sensitivity on the level of 10^{26}-10^{27} yr (CAMEO and CARVEL projects) were discussed. Scintillation properties and radioactive contamination of CaWO4, ZnWO4, CdWO4, PbWO4, GSO(Ce), CeF3, yttrium-aluminum garnet doped with neodymium (YAG:Nd) crystal scintillators were studied. Applicability of these scintillators to search for double beta decay was discussed.

F. A. Danevich

2011-12-26T23:59:59.000Z

422

Oil production models with normal rate curves Dudley Stark  

E-Print Network [OSTI]

Oil production models with normal rate curves Dudley Stark School of Mathematical Sciences Queen;Abstract The normal curve has been used to fit the rate of both world and U.S.A. oil production. In this paper we give the first theoretical basis for these curve fittings. It is well known that oil field

Stark, Dudley

423

New Equipartition Results for Normal Mode Energies of Anharmonic Chains  

E-Print Network [OSTI]

New Equipartition Results for Normal Mode Energies of Anharmonic Chains B.I. Henry 1 and T. Szeredi 2;3 Date: 26 September 1995 The canonical and micro­canonical distribution of energy among. If the inter­particle potential is an even function then energy is distributed uniformly among the normal modes

Henry, Bruce Ian

424

SMITH NORMAL FORM OF A MULTIVARIATE MATRIX ASSOCIATED WITH PARTITIONS  

E-Print Network [OSTI]

SMITH NORMAL FORM OF A MULTIVARIATE MATRIX ASSOCIATED WITH PARTITIONS CHRISTINE BESSENRODT polynomials, and by determining not only the deter- minant but also the Smith normal form of these matrices. A priori the Smith form need not exist but its existence follows from the explicit computation

425

Numerical algorithms for the computation of the Smith normal  

E-Print Network [OSTI]

Numerical algorithms for the computation of the Smith normal form of integral matrices C of the Smith normal form of integral matrices are described. More specifically, the com­ pound matrix method of the algorithms. AMS Subject Classification: Primary 65F30, Secondary 15A21, 15A36. Key words and phrases: Smith

Seberry, Jennifer

426

Conformal Deformation from Normal to Hermitian Random Matrix Ensembles  

E-Print Network [OSTI]

We investigate the eigenvalues statistics of ensembles of normal random matrices when their order N tends to infinite. In the model the eigenvalues have uniform density within a region determined by a simple analytic polynomial curve. We study the conformal deformations of normal random ensembles to Hermitian random ensembles and give sufficient conditions for the latter to be a Wigner ensemble.

Alexei M. Veneziani; Tiago Pereira; Domingos H. U. Marchetti

2009-09-04T23:59:59.000Z

427

Spatially-Variant Tikhonov Regularization for Double-Difference Waveform Inversion  

SciTech Connect (OSTI)

Double-difference waveform inversion is a potential tool for quantitative monitoring for geologic carbon storage. It jointly inverts time-lapse seismic data for changes in reservoir geophysical properties. Due to the ill-posedness of waveform inversion, it is a great challenge to obtain reservoir changes accurately and efficiently, particularly when using time-lapse seismic reflection data. Regularization techniques can be utilized to address the issue of ill-posedness. The regularization parameter controls the smoothness of inversion results. A constant regularization parameter is normally used in waveform inversion, and an optimal regularization parameter has to be selected. The resulting inversion results are a trade off among regions with different smoothness or noise levels; therefore the images are either over regularized in some regions while under regularized in the others. In this paper, we employ a spatially-variant parameter in the Tikhonov regularization scheme used in double-difference waveform tomography to improve the inversion accuracy and robustness. We compare the results obtained using a spatially-variant parameter with those obtained using a constant regularization parameter and those produced without any regularization. We observe that, utilizing a spatially-variant regularization scheme, the target regions are well reconstructed while the noise is reduced in the other regions. We show that the spatially-variant regularization scheme provides the flexibility to regularize local regions based on the a priori information without increasing computational costs and the computer memory requirement.

Lin, Youzuo [Los Alamos National Laboratory; Huang, Lianjie [Los Alamos National Laboratory; Zhang, Zhigang [Los Alamos National Laboratory

2011-01-01T23:59:59.000Z

428

Majorons Without Majorana Masses and Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

We explain excess events near the endpoints of the double beta decay spectra of several elements, using the neutrinoless emission of massless Goldstone bosons. Models with scalars carrying lepton number $-2$ are proposed for this purpose so that ordinary neutrinoless double beta decay is forbidden, and we can raise the scale of global symmetry breaking above the 10 keV scale needed for observable emission of conventional Majorons in double beta decay. The electron spectrum has a different shape, and the rate depends on different nuclear matrix elements, than for the emission of ordinary Majorons.

C. P. Burgess; J. M. Cline

1992-09-30T23:59:59.000Z

429

Neutrinoless Double Beta Decay and Physics Beyond the Standard Model  

E-Print Network [OSTI]

The various mechanisms for neutrinoless double beta decay in gauge theories are reviewed and the present experimental data is used to set limits on physics scenarios beyond the standard model. The positive indications for nonzero neutrino masses in various experiments such as those involving solar, atmospheric and accelerator neutrinos are discussed and it is pointed out how some neutrino mass textures consistent with all data can be tested by the ongoing double beta decay experiments. Finally, the outlook for observable neutrinoless double beta decay signal in grand unified theories is discussed.

Rabindra N. Mohapatra

1995-07-05T23:59:59.000Z

430

Increased Upstream Ionization due to Formation of a Double Layer  

SciTech Connect (OSTI)

We report observations that confirm a theoretical prediction that formation of a current-free double layer in a plasma expanding into a chamber of larger diameter is accompanied by an increase in ionization upstream of the double layer. The theoretical model argues that the increased ionization is needed to balance the difference in diffusive losses upstream and downstream of the expansion region. In our expanding helicon source experiments, we find that the upstream plasma density increases sharply at the same antenna frequency at which the double layer appears.

Thakur, S. Chakraborty; Harvey, Z.; Biloiu, I. A.; Hansen, A.; Hardin, R. A.; Przybysz, W. S.; Scime, E. E. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506-6315 (United States)

2009-01-23T23:59:59.000Z

431

Superconvergence of period doubling cascade in trapezoid maps  

E-Print Network [OSTI]

In the symmetric and the asymmetric trapezoid maps, as a slope of the trapezoid is increased, the period doubling cascade occurs and the symbolic sequence of periodic points is the Metropolis-Stein-Stein sequence and the convergence of the onset point of the period 2^m solution to the accumulation point is exponentially fast. We reported these results previously. In this paper, we give the detailed description of the proof on the results. Further, we study the period doubling cascade starting from period p solution and show the superconvergence of the period doubling cascade.

T. Uezu

2000-01-12T23:59:59.000Z

432

Laser-induced differential normalized fluorescence method for cancer diagnosis  

DOE Patents [OSTI]

An apparatus and method for cancer diagnosis are disclosed. The diagnostic method includes the steps of irradiating a tissue sample with monochromatic excitation light, producing a laser-induced fluorescence spectrum from emission radiation generated by interaction of the excitation light with the tissue sample, and dividing the intensity at each wavelength of the laser-induced fluorescence spectrum by the integrated area under the laser-induced fluorescence spectrum to produce a normalized spectrum. A mathematical difference between the normalized spectrum and an average value of a reference set of normalized spectra which correspond to normal tissues is calculated, which provides for amplifying small changes in weak signals from malignant tissues for improved analysis. The calculated differential normalized spectrum is correlated to a specific condition of a tissue sample. 5 figs.

Vo-Dinh, T.; Panjehpour, M.; Overholt, B.F.

1996-12-03T23:59:59.000Z

433

Laser-induced differential normalized fluorescence method for cancer diagnosis  

DOE Patents [OSTI]

An apparatus and method for cancer diagnosis are disclosed. The diagnostic method includes the steps of irradiating a tissue sample with monochromatic excitation light, producing a laser-induced fluorescence spectrum from emission radiation generated by interaction of the excitation light with the tissue sample, and dividing the intensity at each wavelength of the laser-induced fluorescence spectrum by the integrated area under the laser-induced fluorescence spectrum to produce a normalized spectrum. A mathematical difference between the normalized spectrum and an average value of a reference set of normalized spectra which correspond to normal tissues is calculated, which provides for amplifying small changes in weak signals from malignant tissues for improved analysis. The calculated differential normalized spectrum is correlated to a specific condition of a tissue sample.

Vo-Dinh, Tuan (Knoxville, TN); Panjehpour, Masoud (Knoxville, TN); Overholt, Bergein F. (Knoxville, TN)

1996-01-01T23:59:59.000Z

434

aligned double-walled carbon: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Reinhard 2 Atomistic Simulations of Double-Walled Carbon Nanotubes (DWCNTs) as Materials Science Websites Summary: Atomistic Simulations of Double-Walled Carbon Nanotubes...

435

above-threshold nonsequential double: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Summary: Scintillator detectors can be used in experiments searching for neutrinoless double beta decay. A wide variety of double beta decay candidate isotopes can be made into...

436

T-581: Novell Access Manager Java Double Literal Denial of Service...  

Broader source: Energy.gov (indexed) [DOE]

Vulnerability Report: Novell Access Manager 3.x Oracle FPUpdater Tool IMPACT ASSESSMENT: Medium Discussion: The Double.parseDouble method in Java Runtime Environment in Oracle...

437

A Search for Neutrinoless Double-Beta Decay with EXO-200 .  

E-Print Network [OSTI]

??This work presents a search for neutrinoless double beta decay of 136Xe using data from the EXO-200 detector collected between 2011 and 2012. Neutrinoless double… (more)

Slutsky, Simon

2013-01-01T23:59:59.000Z

438

Neutrinoless double beta decay in deformed nuclei: its implications in particle and nuclear physics .  

E-Print Network [OSTI]

??In my thesis, we calculated the Nuclear Matrix Elements (NME) for neutrinoless double beta decay (0??? decay). Neutrinoless double beta decay is a rare nuclear… (more)

Fang, DongLiang

2011-01-01T23:59:59.000Z

439

Many-body correlations of quasiparticle random-phase approximation in nuclear matrix element of neutrinoless double-beta decay  

E-Print Network [OSTI]

We show that the correlations of the quasiparticle random-phase approximation (QRPA) significantly reduce the nuclear matrix element of neutrinoless double-beta decay by a new mechanism in the calculation for 150Nd -> 150Sm. This effect is due mainly to the normalization factors of the QRPA ground states included in the overlap of intermediate states, to which the QRPA states based on the initial and final ground states are applied. These normalization factors arise according to the definition of the QRPA ground state as the vacuum of quasibosons. The consistency of QRPA approaches taking different virtual paths under the closure approximation is also discussed, and an extension of the QRPA ground state is proposed.

J. Terasaki

2014-08-07T23:59:59.000Z

440

Crystal structures of [lamda] exonuclease in complex with DNA suggest an electrostatic ratchet mechanism for processivity  

SciTech Connect (OSTI)

The {lambda} exonuclease is an ATP-independent enzyme that binds to dsDNA ends and processively digests the 5'-ended strand to form 5' mononucleotides and a long 3' overhang. The crystal structure of {lambda} exonuclease revealed a toroidal homotrimer with a central funnel-shaped channel for tracking along the DNA, and a mechanism for processivity based on topological linkage of the trimer to the DNA was proposed. Here, we have determined the crystal structure of {lambda} exonuclease in complex with DNA at 1.88-{angstrom} resolution. The structure reveals that the enzyme unwinds the DNA prior to cleavage, such that two nucleotides of the 5'-ended strand insert into the active site of one subunit of the trimer, while the 3'-ended strand passes through the central channel to emerge out the back of the trimer. Unwinding of the DNA is facilitated by several apolar residues, including Leu78, that wedge into the base pairs at the single/double-strand junction to form favorable hydrophobic interactions. The terminal 5' phosphate of the DNA binds to a positively charged pocket buried at the end of the active site, while the scissile phosphate bridges two active site Mg{sup 2+} ions. Our data suggest a mechanism for processivity in which wedging of Leu78 and other apolar residues into the base pairs of the DNA restricts backward movement, whereas attraction of the 5' phosphate to the positively charged pocket drives forward movement of the enzyme along the DNA at each cycle of the reaction. Thus, processivity of {lambda} exonuclease operates not only at the level of the trimer, but also at the level of the monomer.

Zhang, Jinjin; McCabe, Kimberly A.; Bell, Charles E. (OSU)

2011-08-10T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Characterization of double walled carbon nanotubes-polyvinylidene fluoride nanocomposites  

E-Print Network [OSTI]

One of the main objectives of this thesis is to disperse double-walled carbon nanotubes (DWNT) in a polyvinylidene fluoride (PVDF) matrix, and to characterize the resulting composite using electrical, thermal, and mechanical characterization...

Almasri, Atheer Mohammad

2007-04-25T23:59:59.000Z

442

Double Shell Tank (DST) Monitor and Control Subsystem Specification  

SciTech Connect (OSTI)

This specification revises the performance requirements and provides references to the requisite codes and standards to be applied during design of the Double-Shell Tank (DST) Monitor and Control Subsystem that supports the first phase of Waste Feed Delivery.

BAFUS, R.R.

2000-11-03T23:59:59.000Z

443

Double Shell Tank (DST) Process Waste Sampling Subsystem Specification  

SciTech Connect (OSTI)

This specification establishes the performance requirements and provides references to the requisite codes and standards to be applied to the Double-Shell Tank (DST) Process Waste Sampling Subsystem which supports the first phase of Waste Feed Delivery.

RASMUSSEN, J.H.

2000-05-03T23:59:59.000Z

444

additional double bonds: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

such as weak-magnetism and pseudoscalar couplings to the amplitude of neutrinoless double beta decay in the mechanisms of light and heavy Majorana neutrino as well as in that...

445

Molecular Dynamics Study of the Electrical Double Layer at Silver...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

double layer at AgClaqueous electrolyte (KCl) interfaces are presented, accompanied by a new force field and properties of bulk AgCl computed using planewave density functional...

446

Double beta decay experiments: past and present achievements  

E-Print Network [OSTI]

A brief history of double beta decay experiments is presented. The best currently running experiments (NEMO-3 and CUORICINO) and their latest results are described. The best measurements and limits for the $2\

Alexander Barabash

2006-08-23T23:59:59.000Z

447

Double Beta Decay: Historical Review of 75 Years of Research  

E-Print Network [OSTI]

Main achievements during 75 years of research on double beta decay have been reviewed. The existing experimental data have been presented and the capabilities of the next-generation detectors have been demonstrated.

A. S. Barabash

2011-04-25T23:59:59.000Z

448

Superconductivity in Bundles of Double-Wall Carbon Nanotubes  

E-Print Network [OSTI]

We present electrical and thermal specific heat measurements that show superconductivity in double-wall carbon nanotube (DWCNT) bundles. Clear evidence, comprising a resistance drop as a function of temperature, magnetoresistance ...

Shi, Wu

449

Double beta decay experiments: beginning of a new era  

E-Print Network [OSTI]

The review of current experiments on search and studying of double beta decay processes is done. Results of the most sensitive experiments are discussed and values of modern limits on effective Majorana neutrino mass ($) are given. New results on two neutrino double beta decay are presented. The special attention is given to new current experiments with mass of studied isotopes more than 100 kg, EXO--200 and KamLAND--Zen. These experiments open a new era in research of double beta decay. In the second part of the review prospects of search for neutrinoless double beta decay in new experiments with sensitivity to $$ at the level of $\\sim 0.01-0.1$ eV are discussed. Parameters and characteristics of the most perspective projects (CUORE, GERDA, MAJORANA, SuperNEMO, EXO, KamLAND--Zen, SNO+) are given.

A. S. Barabash

2012-09-19T23:59:59.000Z

450

Bounds on Compositeness from Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

Assuming the existence of a heavy Majorana neutral particle arising from a composite model scenario we discuss the constraints imposed by present experimental limits of half-life neutrinoless double beta decay $(0\

Orlando Panella; Yogendra N. Srivastava

1994-11-07T23:59:59.000Z

451

Neutrinoless double beta decay, solar neutrinos and mass scales  

E-Print Network [OSTI]

We obtain bounds for the neutrino masses by combining atmospheric and solar neutrino data with the phenomenology of neutrinoless double beta decay where hypothetical values of || are envisaged from future 0\

Per Osland; Geir Vigdel

2001-09-13T23:59:59.000Z

452

Classical cutoffs for laser-induced nonsequential double ionization  

SciTech Connect (OSTI)

Classical cutoffs for the momenta of electrons ejected in laser-induced nonsequential double ionization are derived for the recollision-impact-ionization scenario. Such simple cutoff laws can aid in the interpretation of the observed electron spectra.

Milosevic, D.B. [Faculty of Science, University of Sarajevo, Zmaja od Bosne 35, 71000 Sarajevo (Bosnia and Herzegowina); Max-Born-Institut, Max-Born-Strasse 2a, 12489 Berlin (Germany); Becker, W. [Max-Born-Institut, Max-Born-Strasse 2a, 12489 Berlin (Germany)

2003-12-01T23:59:59.000Z

453

Comment on "Evidence for Neutrinoless Double Beta Decay"  

E-Print Network [OSTI]

We comment on the recent claim for the experimental observation of neutrinoless double-beta decay. We discuss several limitations in the analysis provided in that paper and conclude that there is no basis for the presented claim.

C. E. Aalseth; F. T. Avignone III; A. Barabash; F. Boehm; R. L. Brodzinski; J. I. Collar; P. J. Doe; H. Ejiri; S. R. Elliott; E. Fiorini; R. J. Gaitskell; G. Gratta; R. Hazama; K. Kazkaz; G. S. King III; R. T. Kouzes; H. S. Miley; M. K. Moe; A. Morales; J. Morales; A. Piepke; R. G. H. Robertson; W. Tornow; P. Vogel; R. A. Warner; J. F. Wilkerson

2002-05-22T23:59:59.000Z

454

New expectations and uncertainties on Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

The discovery of neutrino oscillations and its implication that neutrinos have mass have boosted the importance of neutrinoless double beta decay. Neutrinoless double beta decay offers unique chances to investigate the nature of the neutrino mass term, giving also information on the absolute scale and the mass hierarchy, assuming that neutrinos are Majorana particles. We study the Majorana Effective Mass, i. e. the crucial parameter that regulates the rate of the neutrinoless double beta decay due to light neutrino exchange. We update the previous estimations of this parameter, using the most recent data analysis, phase space factors and nuclear matrix elements. We evaluate the impact of the quenching in the nuclear medium of the axial vector coupling constant, as discussed by Iachello and collaborators. We provide estimations of the sensitivity of recent and future neutrinoless double beta decay experiments in terms of the Majorana Effective Mass. Finally, we discuss the possibility of taking advantage of th...

Dell'Oro, Stefano; Vissani, Francesco

2014-01-01T23:59:59.000Z

455

Improved cell cycle synchronization and chromosome doubling methods in cotton  

E-Print Network [OSTI]

Cotton is an economically important crop in the U.S., but is relatively poorly characterized genetically. Unlike other, more researched crops, it is lacking highly effective methods for consistent cell cycle manipulation and chromosome doubling...

Halfmann, Randal

2013-02-22T23:59:59.000Z

456

EA-1136: Double Tracks Test Site, Nye County, Nevada  

Broader source: Energy.gov [DOE]

This EA evaluates the environmental impacts of the proposal for the U.S. Department of Energy Nevada Operations Office to conduct environmental restoration operations at the Double Tracks test site...

457

Comparing Control Constructs by Typing Double-barrelled CPS Transforms  

E-Print Network [OSTI]

Comparing Control Constructs by Typing Double-barrelled CPS Transforms Hayo Thielecke School Kingdom Copyright 2000 ACM 0-89791-88-6/97/05 ..$5.00 the bare essentials of labelling and jumping, so

Thielecke, Hayo

458

Electrochemical Double-Layer Capacitors Using Carbon Nanotube Electrode Structures  

E-Print Network [OSTI]

The structure and behavior of the electrical double-layer capacitor (EDLC) are described. The use of activated carbon electrodes is discussed and the limitations on voltage and accessible surface area are presented. Metrics ...

Schindall, Joel E.

459

Electrochemical Double Layered Capacitor Development and Implementation System  

E-Print Network [OSTI]

Electrochemical Double Layered Capacitors (EDLC's) are becoming a more popular topic of research for hybrid power systems, especially vehicles. They are known for their high power density, high cycle life, low internal resistance, and wider...

Strunk, Gavin

2014-08-31T23:59:59.000Z

460

Electronic responses of long chains to electrostatic fields: Hartree-Fock vs. density-functional theory: A model study  

SciTech Connect (OSTI)

The response to an electrostatic field is determined through simple model calculations, within both the restricted Hartree-Fock and density functional theory methods, for long, finite as well as infinite, periodic chains. The permanent dipole moment, ?{sub 0}, the polarizability, ?, and the hyperpolarizabilities ? and ?, calculated using a finite-field approach, are extensively analyzed. Our simple model allows for treatment of large systems and for separation of the properties into atomic and unit-cell contributions. That part of the response properties attributable to the terminations of the finite system change into delocalized current contributions in the corresponding infinite periodic system. Special emphasis is placed on analyzing the reasons behind the dramatic overestimation of the response properties found with density functional theory methods presently in common use.

Vargas, Jorge, E-mail: j.vargas@mx.uni-saarland.de [Physical and Theoretical Chemistry, University of Saarland, 66123 Saarbrücken (Germany)] [Physical and Theoretical Chemistry, University of Saarland, 66123 Saarbrücken (Germany); Springborg, Michael, E-mail: m.springborg@mx.uni-saarland.de [Physical and Theoretical Chemistry, University of Saarland, 66123 Saarbrücken (Germany) [Physical and Theoretical Chemistry, University of Saarland, 66123 Saarbrücken (Germany); School of Materials Science and Engineering, Tianjin University, Tianjin 300072 (China); Kirtman, Bernard [Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106 (United States)] [Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106 (United States)

2014-02-07T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Kinetic Electrostatic Electron Nonlinear (KEEN) Waves and their Interactions Driven by the Ponderomotive Force of Crossing Laser Beams  

E-Print Network [OSTI]

We have found, using 1D periodic Vlasov-Poisson simulations, new nonlinear, nonstationary, stable, long lived, coherent structures in phase space, called kinetic electrostatic electron nonlinear (KEEN) waves. Ponderomotively driven for a short period of time, at a particular frequency and wavenumber, well inside the band gap that was thought to exist between electron plasma and electron acoustic wave frequencies, KEEN waves are seen to self-consistently form, and persist for thousands of plasma periods. KEEN waves are comprised of 4 or more significant phase-locked harmonic modes which persist only when driven sufficiently strongly. They also merge when two or more at different frequencies are driven sequentially. However, the final stable KEEN state that emerges is highly sensitive to their relative order of excitation. KEEN waves also interact quite strongly with electron plasma waves (EPW) especially when their harmonics are close to being resonant with the EPW frequency at the same k. The common assumptio...

Afeyan, Bedros; Savchenko, V; Johnston, T; Ghizzo, A; Bertrand, P

2012-01-01T23:59:59.000Z

462

Band Tunneling through Double Barrier in Bilayer Graphene  

E-Print Network [OSTI]

By taking into account the full four band energy spectrum, we calculate the transmission probability and conductance of electrons across symmetric and asymmetric double potential barrier with a confined interlayer potential difference in bilayer graphene. For energies less than the interlayer coupling \\gamma_{1}, E \\gamma_{1}, we obtain four possible ways for transmission resulting from the two propagating modes. We compute the associated transmission probabilities as well as their contribution to the conductance, study the effect of the double barrier geometry.

Hasan A. Alshehab; Hocine Bahlouli; Abderrahim El Mouhafid; Ahmed Jellal

2014-01-20T23:59:59.000Z

463

Neutrinoless Double Beta Decay with Negligible Neutrino Mass  

E-Print Network [OSTI]

If the electron neutrino has an effective nonzero Majorana mass, then neutrinoless double beta decay will occur. However, the latter is possible also with a negligible neutrino mass. We show how this may happen in a simple model of scalar diquarks and dileptons. This possibility allows neutrino masses to be small and hierarchical, without conflicting with the possible experimental evidence of neutrinoless double beta decay.

Biswajoy Brahmachari; Ernest Ma

2002-02-27T23:59:59.000Z

464

Overconstrained estimates of neutrinoless double beta decay within the QRPA  

E-Print Network [OSTI]

Estimates of nuclear matrix elements for neutrinoless double beta decay (0nu2beta) based on the quasiparticle random phase approximations (QRPA) are affected by theoretical uncertainties, which can be substantially reduced by fixing the unknown strength parameter g_pp of the residual particle-particle interaction through one experimental constraint - most notably through the two-neutrino double beta decay (2nu2beta) lifetime. However, it has been noted that the g_pp adjustment via 2\

Amand Faessler; Gianluigi Fogli; Eligio Lisi; Vadim Rodin; Anna Maria Rotunno; Fedor Simkovic

2008-05-29T23:59:59.000Z

465

Effect of nuclear deformation on double beta decay  

SciTech Connect (OSTI)

The existing ways of accounting for deformation in recent calculations of neutrinoless double beta decay matrix elements are discussed. From an analysis of relevant experimental data it is argued that only {sup 150}Nd reveals convincing evidences of strong static deformation, which should eventually be taken into account in QRPA calculations. A proposal which allows in principle to measure the neutrino less double beta decay Fermi matrix element is briefly described.

Rodin, Vadim [Institute fuer Theoretische Physik der Universitaet Tuebingen, D-72076 Tuebingen (Germany)

2009-11-09T23:59:59.000Z

466

An improved fast multipole method for electrostatic potential calculations in a class of coarse-grained molecular simulations  

SciTech Connect (OSTI)

This paper presents a novel algorithm to approximate the long-range electrostatic potential field in the Cartesian coordinates applicable to 3D coarse-grained simulations of biopolymers. In such models, coarse-grained clusters are formed via treating groups of atoms as rigid and/or flexible bodies connected together via kinematic joints. Therefore, multibody dynamic techniques are used to form and solve the equations of motion of such coarse-grained systems. In this article, the approximations for the potential fields due to the interaction between a highly negatively/positively charged pseudo-atom and charged particles, as well as the interaction between clusters of charged particles, are presented. These approximations are expressed in terms of physical and geometrical properties of the bodies such as the entire charge, the location of the center of charge, and the pseudo-inertia tensor about the center of charge of the clusters. Further, a novel substructuring scheme is introduced to implement the presented far-field potential evaluations in a binary tree framework as opposed to the existing quadtree and octree strategies of implementing fast multipole method. Using the presented Lagrangian grids, the electrostatic potential is recursively calculated via sweeping two passes: assembly and disassembly. In the assembly pass, adjacent charged bodies are combined together to form new clusters. Then, the potential field of each cluster due to its interaction with faraway resulting clusters is recursively calculated in the disassembly pass. The method is highly compatible with multibody dynamic schemes to model coarse-grained biopolymers. Since the proposed method takes advantage of constant physical and geometrical properties of rigid clusters, improvement in the overall computational cost is observed comparing to the tradition application of fast multipole method.

Poursina, Mohammad [Department of Aerospace and Mechanical Engineering, University of Arizona, Tucson, AZ 85721 (United States); Anderson, Kurt S. [Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute (RPI), Troy, NY 12180 (United States)

2014-08-01T23:59:59.000Z

467

Particle size effects in particle-particle triboelectric charging studied with an integrated fluidized bed and electrostatic separator system  

SciTech Connect (OSTI)

Fundamental studies of triboelectric charging of granular materials via particle-particle contact are challenging to control and interpret because of foreign material surfaces that are difficult to avoid during contacting and measurement. The measurement of particle charge itself can also induce charging, altering results. Here, we introduce a completely integrated fluidized bed and electrostatic separator system that charges particles solely by interparticle interactions and characterizes their charge on line. Particles are contacted in a free-surface fluidized bed (no reactor walls) with a well-controlled fountain-like flow to regulate particle-particle contact. The charged particles in the fountain are transferred by a pulsed jet of air to the top of a vertically-oriented electrostatic separator consisting of two electrodes at oppositely biased high voltage. The free-falling particles migrate towards the electrodes of opposite charge and are collected by an array of cups where their charge and size can be determined. We carried out experiments on a bidisperse size mixture of soda lime glass particles with systematically varying ratios of concentration. Results show that larger particles fall close to the negative electrode and smaller particles fall close to the positive electrode, consistent with theory and prior experiments that larger particles charge positively and smaller particles charge negatively. The segregation of particles by charge for one of the size components is strongest when its collisions are mostly with particles of the other size component; thus, small particles segregate most strongly to the negative sample when their concentration in the mixture is small (and analogous results occur for the large particles). Furthermore, we find additional size segregation due to granular flow, whereby the fountain becomes enriched in larger particles as the smaller particles are preferentially expelled from the fountain.

Bilici, Mihai A.; Toth, Joseph R.; Sankaran, R. Mohan; Lacks, Daniel J. [Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106-7217 (United States)

2014-10-15T23:59:59.000Z

468

Double-core excitations in formamide can be probed by X-ray double-quantum-coherence spectroscopy  

E-Print Network [OSTI]

Yu Zhang, Daniel Healion, Jason D. Biggs, and Shaul Mukamel Citation: J. Chem. Phys. 138, 144301 be probed by X-ray double-quantum-coherence spectroscopy Yu Zhang, Daniel Healion, Jason D. Biggs, and Shaul

Mukamel, Shaul

469

Characteristics of Wind Turbines Under Normal and Fault Conditions: Preprint  

SciTech Connect (OSTI)

This paper investigates the characteristics of a variable-speed wind turbine connected to a stiff or weak grid under normal and fault conditions and the role of reactive power compensation.

Muljadi, E.; Butterfield, C. P.; Parsons, B.; Ellis, A.

2007-02-01T23:59:59.000Z

470

Normality of Monte Carlo criticality eigenfunction decomposition coefficients  

SciTech Connect (OSTI)

A proof is presented, which shows that after a single Monte Carlo (MC) neutron transport power method iteration without normalization, the coefficients of an eigenfunction decomposition of the fission source density are normally distributed when using analog or implicit capture MC. Using a Pearson correlation coefficient test, the proof is corroborated by results from a uniform slab reactor problem, and those results also suggest that the coefficients are normally distributed with normalization. The proof and numerical test results support the application of earlier work on the convergence of eigenfunctions under stochastic operators. Knowledge of the Gaussian shape of decomposition coefficients allows researchers to determine an appropriate level of confidence in the distribution of fission sites taken from a MC simulation. This knowledge of the shape of the probability distributions of decomposition coefficients encourages the creation of new predictive convergence diagnostics. (authors)

Toth, B. E.; Martin, W. R. [Department of Nuclear Engineering and Radiological Sciences, University of Michigan, 2355 Bonisteel Boulevard, Ann Arbor, MI 48109 (United States); Griesheimer, D. P. [Bechtel Bettis, Inc., P.O. Box 79, West Mifflin, PA 15122 (United States)

2013-07-01T23:59:59.000Z

471

Coarser connected topologies and non-normality points  

E-Print Network [OSTI]

We investigate two topics, coarser connected topologies and non-normality points. The motivating question in the first topic is: When does a space have a coarser connected topology with a nice topological property? We will ...

Yengulalp, Lynne Christine

2009-01-01T23:59:59.000Z

472

Computing Simplicial Homology Based on Efficient Smith Normal Form Algorithms  

E-Print Network [OSTI]

in general are sparse. We provide a review of several al- gorithms for the calculation of Smith Normal Form defined by ieA = i j=0 (-1)j eA\\{aj }, where A = {a0

Dumas, Jean-Guillaume

473

Paducah and Portsmouth Off-Specification Enriched and Normal...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Enriched and Normal UF 6 Inventory 1 3B refers to a 30B cylinder size and 4A refers to a 48A size cylinder. Table 1 PORTS Enriched Inventory Container ID Sample Transfer Gross lbs...

474

Deconvolution in Random Effects Models via Normal Mixtures  

E-Print Network [OSTI]

This dissertation describes a minimum distance method for density estimation when the variable of interest is not directly observed. It is assumed that the underlying target density can be well approximated by a mixture of normals. The method...

Litton, Nathaniel A.

2010-10-12T23:59:59.000Z

475

Use of Normalized Radial Basis Function in Hydrology  

SciTech Connect (OSTI)

In this article we will present a use of normalized radial basis function in hydrology for prediction of missing river Reka runoff data. The method is based on multidimensional normal distribution, where standard deviation is first optimized and later the whole prediction process is learned on existing data [5]. We can conclude, that the method works very well for middle ranges of data, but not so well for extremes because of its interpolating nature.

Cotar, Anton; Brilly, Mitja [Chair of Hydrology and Hydraulic Engineering, University of Ljubljana, Jamova 2, 1000 Ljubljana (Slovenia)

2008-11-13T23:59:59.000Z

476

Next Generation Neutrinoless Double -Decay Experiments Andreas Piepke, R.G. Hamish Robertson  

E-Print Network [OSTI]

of this ambitious program...". The Long Range Plan further states: "... neutrinoless double beta decay experiments

477

Solving the Double Digestion Problem as a MixedInteger Linear Program \\Lambda  

E-Print Network [OSTI]

Solving the Double Digestion Problem as a Mixed­Integer Linear Program \\Lambda Zhijun Wu y and Yin Zhang z August, 2001 Abstract. The double digestion problem for DNA restriction mapping is known­scale double digestion problems. Key Words. DNA sequencing, restriction mapping, double digestion, NP

Zhang, Yin

478

Systematic decomposition of the neutrinoless double beta decay operator  

E-Print Network [OSTI]

We discuss the systematic decomposition of the dimension nine neutrinoless double beta decay operator, focusing on mechanisms with potentially small contributions to neutrino mass, while being accessible at the LHC. We first provide a (d=9 tree-level) complete list of diagrams for neutrinoless double beta decay. From this list one can easily recover all previously discussed contributions to the neutrinoless double beta decay process, such as the celebrated mass mechanism or "exotics", such as contributions from left-right symmetric models, R-parity violating supersymmetry and leptoquarks. More interestingly, however, we identify a number of new possibilities which have not been discussed in the literature previously. Contact to earlier works based on a general Lorentz-invariant parametrisation of the neutrinoless double beta decay rate is made, which allows, in principle, to derive limits on all possible contributions. We furthermore discuss possible signals at the LHC for mediators leading to the short-range part of the amplitude with one specific example. The study of such contributions would gain particular importance if there were a tension between different measurements of neutrino mass such as coming from neutrinoless double beta decay and cosmology or single beta decay.

Florian Bonnet; Martin Hirsch; Toshihiko Ota; Walter Winter

2014-06-23T23:59:59.000Z

479

CIRCUMSTELLAR ABSORPTION IN DOUBLE DETONATION TYPE Ia SUPERNOVAE  

SciTech Connect (OSTI)

Upon formation, degenerate He core white dwarfs are surrounded by a radiative H-rich layer primarily supported by ideal gas pressure. In this Letter, we examine the effect of this H-rich layer on mass transfer in He+C/O double white dwarf binaries that will eventually merge and possibly yield a Type Ia supernova (SN Ia) in the double detonation scenario. Because its thermal profile and equation of state differ from the underlying He core, the H-rich layer is transferred stably onto the C/O white dwarf prior to the He core's tidal disruption. We find that this material is ejected from the binary system and sweeps up the surrounding interstellar medium hundreds to thousands of years before the SN Ia. The close match between the resulting circumstellar medium profiles and values inferred from recent observations of circumstellar absorption in SNe Ia gives further credence to the resurgent double detonation scenario.

Shen, Ken J. [Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Guillochon, James [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); Foley, Ryan J., E-mail: kenshen@astro.berkeley.edu [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)

2013-06-20T23:59:59.000Z

480

Heavy Sterile Neutrinos and Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

Sterile neutrinos of mass up to a few tens of TeV can saturate the present experimental bound of neutrinoless double beta decay process. Due to the updated nuclear matrix elements, the bound on mass and mixing angle is now improved by one order of magnitude. We have performed a detailed analysis of neutrinoless double beta decay for the minimal Type I seesaw scenario. We have shown that in spite of the naive expectation that the light neutrinos give the dominant contribution, sterile neutrinos can saturate the present experimental bound of neutrinoless double beta decay process. However, in order to be consistent with radiative stability of light neutrino masses, the mass scale of sterile neutrinos should be less than 10 GeV.

Manimala Mitra; Goran Senjanovic; Francesco Vissani

2012-05-17T23:59:59.000Z

Note: This page contains sample records for the topic "normal electrostatic double" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Preheat of radiative shock in double-shell ignition targets  

SciTech Connect (OSTI)

For the double-shell ignition target, the nonuniform preheat of the inner shell by high-energy x rays, especially the M-band line radiation and L-shell radiation from the Au hohlraum, aggravates the hydrodynamic instability that causes shell disruption. In this paper, for the first time, we propose another preheating mechanism due to the radiative shock formed in the CH foam, and also confirm and validate such preheat of radiative shock by numerical results. We also give an estimate of the improved double-shell in which the CH foam is replaced by the metallic foam to mitigate the hydrodynamic instabilities, and find that the radiative shock formed in the metallic foam produces a much stronger radiation field to preheat the inner shell, which plays a role in better controlling the instabilities. In double-shells, the preheat of radiative shock, as a potential effect on the instabilities, should be seriously realized and underlined.

Li, J. W.; He, X. T. [Key Lab of High Energy Density Physics Simulation, Center for Applied Physics and Technology, Peking University, Beijing 100871 (China) [Key Lab of High Energy Density Physics Simulation, Center for Applied Physics and Technology, Peking University, Beijing 100871 (China); Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100094 (China); Pei, W. B.; Li, J. H.; Zheng, W. D.; Zhu, S. P. [Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100094 (China)] [Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100094 (China); Kang, W. [Key Lab of High Energy Density Physics Simulation, Center for Applied Physics and Technology, Peking University, Beijing 100871 (China)] [Key Lab of High Energy Density Physics Simulation, Center for Applied Physics and Technology, Peking University, Beijing 100871 (China)

2013-08-15T23:59:59.000Z

482

Q value of the 100Mo Double-Beta Decay  

E-Print Network [OSTI]

Penning trap measurements using mixed beams of 100Mo - 100Ru and 76Ge - 76Se have been utilized to determine the double-beta decay Q-values of 100Mo and 76Ge with uncertainties less than 200 eV. The value for 76Ge, 2039.04(16) keV is in agreement with the published SMILETRAP value. The new value for 100Mo, 3034.40(17) keV is 30 times more precise than the previous literature value, sufficient for the ongoing neutrinoless double-beta decay searches in 100Mo. Moreover, the precise Q-value is used to calculate the phase-space integrals and the experimental nuclear matrix element of double-beta decay.

S. Rahaman; V. -V. Elomaa; T. Eronen; J. Hakala; A. Jokinen; J. Julin; A. Kankainen; A. Saastamoinen; J. Suhonen; C. Weber; J. Äystö

2007-12-20T23:59:59.000Z

483

Short-range correlations and neutrinoless double beta decay  

E-Print Network [OSTI]

In this work we report on the effects of short-range correlations upon the matrix elements of neutrinoless double beta decay. We focus on the calculation of the matrix elements of the neutrino-mass mode of neutrinoless double beta decays of 48Ca and 76Ge. The nuclear-structure components of the calculation, that is the participant nuclear wave functions, have been calculated in the shell-model scheme for 48Ca and in the proton-neutron quasiparticle random-phase approximation (pnQRPA) scheme for 76Ge. We compare the traditional approach of using the Jastrow correlation function with the more complete scheme of the unitary correlation operator method (UCOM). Our results indicate that the Jastrow method vastly exaggerates the effects of short-range correlations on the neutrinoless double beta decay nuclear matrix elements.

M. Kortelainen; O. Civitarese; J. Suhonen; J. Toivanen

2007-01-18T23:59:59.000Z

484

Double-Fock Superposition Interferometry for Differential Diagnosis of Decoherence  

E-Print Network [OSTI]

Interferometric signals are degraded by decoherence, which encompasses dephasing, mixing and any distinguishing which-path information. These three paradigmatic processes are fundamentally different, but, for coherent, single-photon and $N00N$-states, they degrade interferometric visibility in the very same way, which impedes the diagnosis of the cause for reduced visibility in a single experiment. We introduce a versatile formalism for many-boson interferometry based on double-sided Feynman diagrams, which we apply to a protocol for differential decoherence diagnosis: Twin-Fock states |N,N> with $N \\ge 2$ reveal to which extent decoherence is due to path distinguishability or to mixing, while double-Fock superpositions $|N:M> = (|N,M> + |M,N>)/\\sqrt{2} $ with $N > M >0$ additionally witness the degree of dephasing. Hence, double-Fock superposition interferometry permits the differential diagnosis of decoherence processes in a single experiment, indispensable for the assessment of interferometers.

Malte C. Tichy; Young-Sik Ra; Hyang-Tag Lim; Clemens Gneiting; Yoon-Ho Kim; Klaus Mølmer

2015-01-30T23:59:59.000Z

485

HANFORD DOUBLE SHELL TANK THERMAL AND SEISMIC PROJECT SEISMIC ANALYSIS OF HANFORD DOUBLE SHELL TANKS  

SciTech Connect (OSTI)

M&D Professional Services, Inc. (M&D) is under subcontract to Pacific Northwest National Laboratories (PNNL) to perform seismic analysis of the Hanford Site Double-Shell Tanks (DSTs) in support of a project entitled Double-Shell Tank (DST) Integrity Project - DST Thermal and Seismic Analyses. The original scope of the project was to complete an up-to-date comprehensive analysis of record of the DST System at Hanford in support of Tri-Party Agreement Milestone M-48-14. The work described herein was performed in support of the seismic analysis of the DSTs. The thermal and operating loads analysis of the DSTs is documented in Rinker et al. (2004). Although Milestone M-48-14 has been met, Revision I is being issued to address external review comments with emphasis on changes in the modeling of anchor bolts connecting the concrete dome and the steel primary tank. The work statement provided to M&D (PNNL 2003) required that a nonlinear soil structure interaction (SSI) analysis be performed on the DSTs. The analysis is required to include the effects of sliding interfaces and fluid sloshing (fluid-structure interaction). SSI analysis has traditionally been treated by frequency domain computer codes such as SHAKE (Schnabel, et al. 1972) and SASSI (Lysmer et al. 1999a). Such frequency domain programs are limited to the analysis of linear systems. Because of the contact surfaces, the response of the DSTs to a seismic event is inherently nonlinear and consequently outside the range of applicability of the linear frequency domain programs. That is, the nonlinear response of the DSTs to seismic excitation requires the use of a time domain code. The capabilities and limitations of the commercial time domain codes ANSYS{reg_sign} and MSC Dytran{reg_sign} for performing seismic SSI analysis of the DSTs and the methodology required to perform the detailed seismic analysis of the DSTs has been addressed in Rinker et al (2006a). On the basis of the results reported in Rinker et al. (2006a), it is concluded that time-domain SSI analysis using ANSYS{reg_sign} is justified for predicting the global response of the DSTs. The most significant difference between the current revision (Revision 1) of this report and the original issue (Revision 0) is the treatment of the anchor bolts that tie the steel dome of the primary tank to the concrete tank dome.

MACKEY TC; RINKER MW; CARPENTER BG; HENDRIX C; ABATT FG

2009-01-15T23:59:59.000Z

486

HANFORD DOUBLE SHELL TANK (DST) THERMAL & SEISMIC PROJECT SEISMIC ANALYSIS OF HANFORD DOUBLE SHELL TANKS  

SciTech Connect (OSTI)

M&D Professional Services, Inc. (M&D) is under subcontract to Pacific Northwest National Laboratory (PNNL) to perform seismic analysis of the Hanford Site double-shell tanks (DSTs) in support of a project entitled ''Double-Shell Tank (DSV Integrity Project--DST Thermal and Seismic Analyses)''. The overall scope of the project is to complete an up-to-date comprehensive analysis of record of the DST system at Hanford in support of Tri-Party Agreement Milestone M-48-14, The work described herein was performed in support of the seismic analysis of the DSTs. The thermal and operating loads analysis of the DSTs is documented in Rinker et al. (2004). The work statement provided to M&D (PNNL 2003) required that the seismic analysis of the DSTs assess the impacts of potentially non-conservative assumptions in previous analyses and account for the additional soil mass due to the as-found soil density increase, the effects of material degradation, additional thermal profiles applied to the full structure including the soil-structure response with the footings, the non-rigid (low frequency) response of the tank roof, the asymmetric seismic-induced soil loading, the structural discontinuity between the concrete tank wall and the support footing and the sloshing of the tank waste. The seismic analysis considers the interaction of the tank with the surrounding soil and the effects of the primary tank contents. The DSTs and the surrounding soil are modeled as a system of finite elements. The depth and width of the soil incorporated into the analysis model are sufficient to obtain appropriately accurate analytical results. The analyses required to support the work statement differ from previous analysis of the DSTs in that the soil-structure interaction (SSI) model includes several (nonlinear) contact surfaces in the tank structure, and the contained waste must be modeled explicitly in order to capture the fluid-structure interaction behavior between the primary tank and contained waste.

MACKEY, T.C.

2006-03-17T23:59:59.000Z

487

Method for construction of normalized cDNA libraries  

DOE Patents [OSTI]

This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3` noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to appropriate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library. This invention also provides normalized cDNA libraries generated by the above-described method and uses of the generated libraries. 19 figs.

Soares, M.B.; Efstratiadis, A.

1998-11-03T23:59:59.000Z

488

Method for construction of normalized cDNA libraries  

DOE Patents [OSTI]

This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3' noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to appropriate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library. This invention also provides normalized cDNA libraries generated by the above-described method and uses of the generated libraries.

Soares, Marcelo B. (New York, NY); Efstratiadis, Argiris (Englewood, NJ)

1998-01-01T23:59:59.000Z

489

Consistency test of neutrinoless double beta decay with one isotope  

E-Print Network [OSTI]

We discuss a consistency test which makes it possible to discriminate unknown nuclear background lines from neutrinoless double beta decay with only one isotope. By considering both the transition to the ground state and to the first excited $0^+$ state, a sufficiently large detector can reveal if neutrinoless double beta decay or some other nuclear physics process is at work. Such a detector could therefore simultaneously provide a consistency test for a certain range of Majorana masses and be sensitive to lower values of the effective Majorana mass.

Michael Duerr; Manfred Lindner; Kai Zuber

2011-11-17T23:59:59.000Z

490

Slug Test Data Analysis in Reservoirs with Double Porosity Behaviour  

SciTech Connect (OSTI)

Pressure analysis for a slug test which corresponds to the flow period of a Drill Stem test is extended to wells in reservoirs with double-porosity behaviour. Solutions are obtained for either pseudo-steady state or transient interporosity flow. The distinctive specific features of both solutions are identified. Results presented are applicable to both naturally-fractured and layered reservoirs with the more permeable layer connecting to the wellbore. Type curves based on the pseudo-steady or transient interporosity flow are presented. These type curves are similar to the existing homogenous single layer type curve with addition of interporosity flow lines indicating double-porosity behaviour.

Mateen, Khalid; Ramey, Henry J. Jr.

1983-12-15T23:59:59.000Z

491

Implementation of Double-Waist Chicane Optics in SPEAR3  

SciTech Connect (OSTI)

The SPEAR3 accelerator upgrade opened up two 7.6m racetrack straights in the magnet lattice. In one of these straights, we recently added a magnetic chicane to separate two insertion device (ID) beam lines by 10mrad. A quadrupole triplet in the center creates a ''double focus'' optics with {beta}y = 1.6m at the middle of each ID, hence the term ''double-waist chicane''. The new optics also reduced {beta}y in the four matching straights adjacent to the racetrack straights to 2.5m. In this paper, we outline design features of the optics and physical implementation of the lattice.

Corbett, J.; Cornacchia, M.; Dao, T.; Dell'Orco, D.; Rafael, F.; Harrington, D.; Hettel, R.; Huang, X.; Nosochkov, Y.; Rabedeau, T.; Rarback, H.; Ringwall, A.; Safranek,; Scott, B.; Sebek, J.; Tanabe, J.; Terebilo, A.; Wermelskirchen, C.; Widmeyer, M.; /SLAC, SSRL; Yoon, Moohyun; /POSTECH

2006-08-16T23:59:59.000Z

492

Heavy Sterile Neutrinos and Neutrinoless Double Beta Decay  

E-Print Network [OSTI]

We investigate the possibility of producing neutrinoless double beta decay without having an electron neutrino with a mass in the vicinity of 1 eV. We do so by having a much lighter electron neutrino mix with a much heavier (m > 1 GeV) sterile neutrino. We study the constraints on the masses and mixings of such heavy sterile neutrinos from existing laboratory, astrophysical and cosmological information, and discuss the properties it would require in order to produce a detectable signal in current searches for neutrinoless double beta decay.

P. Bamert; C. P. Burgess; R. N. Mohapatra

1994-10-12T23:59:59.000Z

493

Empirical Survey of Neutrinoless Double Beta Decay Matrix Elements  

E-Print Network [OSTI]

Neutrinoless double beta decay has been the subject of intensive theoretical work as it represents the only practical approach to discovering whether neutrinos are Majorana particles or not, and whether lepton number is a conserved quantum number. Available calculations of matrix elements and phase-space factors are reviewed from the perspective of a future large-scale experimental search for neutrinoless double beta decay. Somewhat unexpectedly, a uniform inverse correlation between phase space and the square of the nuclear matrix element emerges. As a consequence, no isotope is either favored or disfavored; all have qualitatively the same decay rate per unit mass for any given value of the Majorana mass.

R. G. H. Robertson

2013-01-07T23:59:59.000Z

494

Double-{beta} decay Q value of {sup 150}Nd  

SciTech Connect (OSTI)

The double-{beta} decay Q value of {sup 150}Nd was determined by using the JYFLTRAP Penning trap mass spectrometer. The measured mass difference between {sup 150}Nd and {sup 150}Sm is 3371.38(20) keV. This new value deviates by 3.7 keV from the previously adopted value of 3367.7(22) keV and is a factor of 10 more precise. Accurate knowledge of this Q value is important because {sup 150}Nd is a primary candidate to be used in the search for neutrinoless double-{beta} decay modes in several experiments.

Kolhinen, V. S.; Eronen, T.; Gorelov, D.; Hakala, J.; Jokinen, A.; Kankainen, A.; Moore, I. D.; Rissanen, J.; Saastamoinen, A.; Suhonen, J.; Aeystoe, J. [Department of Physics, P. O. Box 35 (YFL), FI-40014 University of Jyvaeskylae (Finland)

2010-08-15T23:59:59.000Z

495

Consistency test of neutrinoless double beta decay with one isotope  

SciTech Connect (OSTI)

We discuss a consistency test which makes it possible to discriminate unknown nuclear background lines from neutrinoless double beta decay with only one isotope. By considering both the transition to the ground state and to the first excited 0{sup +} state, a sufficiently large detector can reveal if neutrinoless double beta decay or some other nuclear physics process is at work. Such a detector could therefore simultaneously provide a consistency test for a certain range of Majorana masses and be sensitive to lower values of the effective Majorana mass .

Duerr, Michael; Lindner, Manfred [Max-Planck-Institut fuer Kernphysik, Postfach 10 39 80, 69029 Heidelberg (Germany); Zuber, Kai [Technical University Dresden, Institut fuer Kern- und Teilchenphysik, 01069 Dresden (Germany)

2011-11-01T23:59:59.000Z

496

Multiple-resonance phenomenon in neutrinoless double-electron capture  

SciTech Connect (OSTI)

A superposition of multiple resonance states in neutrinoless double-electron capture in {sup 156}Dy has been discovered. Penning-trap mass spectrometry has been used for atomic-mass-difference measurements and careful calculations of electron wave functions and double-hole binding energies have been performed to determine the resonance-enhancement factors. Transitions to four nuclear excited states in the daughter nuclide {sup 156}Gd have been identified as resonantly enhanced, including one with a full resonant enhancement, within the uncertainty of 100 eV. This phenomenon is unique in that it can be used to probe the mechanisms of neutrinoless processes.

Eliseev, S.; Goncharov, M. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Blaum, K. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Physikalisches Institut, Ruprecht-Karls-Universitaet, D-69120 Heidelberg (Germany); Block, M.; Herfurth, F.; Minaya Ramirez, E. [GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Planckstrasse 1, D-64291 Darmstadt (Germany); Droese, C.; Schweikhard, L. [Institut fuer Physik, Ernst-Moritz-Arndt-Universitaet, D-17487 Greifswald (Germany); Novikov, Yu. N. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Petersburg Nuclear Physics Institute, Gatchina, RU-188300 St. Petersburg (Russian Federation); Department of Physics, St. Petersburg State University, RU-198504 St. Petersburg (Russian Federation); Shabaev, V. M.; Tupitsyn, I. I.; Zubova, N. A. [Department of Physics, St. Petersburg State University, RU-198504 St. Petersburg (Russian Federation); Zuber, K. [Institut fuer Kern- und Teilchenphysik, Technische Universitaet, D-01069 Dresden (Germany)

2011-07-15T23:59:59.000Z

497

Period doubling, information entropy, and estimates for Feigenbaum's constants  

E-Print Network [OSTI]

The relationship between period doubling bifurcations and Feigenbaum's constants has been studied for nearly 40 years and this relationship has helped uncover many fundamental aspects of universal scaling across multiple nonlinear dynamical systems. This paper will combine information entropy with symbolic dynamics to demonstrate how period doubling can be defined using these tools alone. In addition, the technique allows us to uncover some unexpected, simple estimates for Feigenbaum's constants which relate them to log 2 and the golden ratio, phi, as well as to each other.

Reginald D. Smith

2013-08-03T23:59:59.000Z

498

Method for construction of normalized cDNA libraries  

DOE Patents [OSTI]

This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form. The method comprises: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3` noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to moderate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library. 4 figs.

Soares, M.B.; Efstratiadis, A.

1996-01-09T23:59:59.000Z

499

Method for construction of normalized cDNA libraries  

DOE Patents [OSTI]

This invention provides a method to normalize a directional cDNA library constructed in a vector that allows propagation in single-stranded circle form comprising: (a) propagating the directional cDNA library in single-stranded circles; (b) generating fragments complementary to the 3' noncoding sequence of the single-stranded circles in the library to produce partial duplexes; (c) purifying the partial duplexes; (d) melting and reassociating the purified partial duplexes to moderate Cot; and (e) purifying the unassociated single-stranded circles, thereby generating a normalized cDNA library.

Soares, Marcelo B. (New York, NY); Efstratiadis, Argiris (Englewood, NJ)

1996-01-01T23:59:59.000Z

500

Electrostatic binding of bicarbonate and formate in viologen-based redox polymers: importance in catalytic reduction of bicarbonate to formate  

SciTech Connect (OSTI)

The relative importance of electrostatic binding of CO3H and HCO2 in a redox polymer derived from an N,N'-dialkyl-4,4'-bipyridinium monomer has been investigated by Fourier transform infrared (FTIR) spectroscopy. At 298 K and a total concentration of C-containing species of 0.1 M the two species are equally firmly bound in a polymer immobilized on a single-crystal Si electrode surface. When the concentration of C-containing species is 1.0 M, the CO3H ion is more firmly bound by about a factor of 2.5, and at a total concentration of 3.0 M the CO3H ion is about 7 times more firmly bound than the HCO2 ion. The HCO2 and Cl anions are equally firmly bound at 1.0 M total anion concentration. On the basis of the lack of change in the cyclic voltammetry response of a derivatized electrode in 1.0 M Na(CO3H) or Na(HCO2) compared to 1.0 M NaCl, the exchange rate of the C-containing anions does not appear to be a factor that would limit the rate of reduction of the CO3H ion at an electrode modified with the polymer and impregnated with Pd(0).

Andre, J.F.; Wrighton, M.S.

1985-12-04T23:59:59.000Z