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Note: This page contains sample records for the topic "hor se trap" 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.


1

Measuring charge trap occupation and energy level in CdSe/ZnS quantum dots using a scanning tunneling microscope  

E-Print Network (OSTI)

We use a scanning tunneling microscope to probe single-electron charging phenomena in individual CdSe/ZnS (core/shell) quantum dots (QDs) at room temperature. The QDs are deposited on top of a bare Au thin film and form a ...

Bulovic, Vladimir

2

COLD TRAPS  

DOE Patents (OSTI)

A cold trap is presented for removing a condensable component from a gas mixture by cooling. It consists of a shell, the exterior surface of which is chilled by a refrigerant, and conductive fins welded inside the shell to condense the gas, and distribute the condensate evenly throughout the length of the trap, so that the trap may function until it becomes completely filled with the condensed solid. The contents may then be removed as either a gas or as a liquid by heating the trap. This device has particuinr use as a means for removing uranium hexafluoride from the gaseous diffusion separation process during equipment breakdown and repair periods.

Thompson, W.I.

1958-09-30T23:59:59.000Z

3

Mechanisms for Fluorescence Blinking and Charge Carrier Trapping in Single Semiconductor Nanocrystals  

E-Print Network (OSTI)

Trapping Mechanisms in Single CdSe/ZnS Quantum Dots fromTrapping Mechanisms in Single CdSe/ZnS Quantum Dots fromintermittency of single CdSe/ZnS core/shell quantum dot

Cordones, Amy Ashbrook

2012-01-01T23:59:59.000Z

4

Mode trap  

DOE Patents (OSTI)

This report discusses a mode trap to trap and absorb transverse modes formed by a beam in a linear accelerator includes a waveguide having a multiplicity of electrically conductive (preferably copper) irises and rings, each iris and ring including an aperture, and the irises and rings being stacked in a side-by-side, alternating fashion such that the apertures of the irises and rings are concentrically aligned. An absorbing material layer such as a dielectric is embedded in each iris and ring, and this absorbing material layer encircles, but is circumferentially spaced from its respective aperture. Each iris and ring includes a plurality of circumferentially spaced slots around it`s aperture and extending radially out toward it`s absorbing material layer.

Chojnacki, E.P.

1992-12-31T23:59:59.000Z

5

Interaction of trapped ions with trapped atoms  

E-Print Network (OSTI)

In this thesis, I present results from two Paul-trap based ion traps carried out in the Vuleti? laboratory: the Atom-Ion trap for collision studies between cold atoms and cold ions, and the Cavity-Array trap for studying ...

Grier, Andrew T. (Andrew Todd)

2011-01-01T23:59:59.000Z

6

COLD TRAP  

DOE Patents (OSTI)

An improved linear-flow cold trap is designed for highvacuum applications such as mitigating back migration of diffusion pump oil moiecules. A central pot of liquid nitrogen is nested within and supported by a surrounding, vertical, helical coil of metai sheet, all enveloped by a larger, upright, cylindrical, vacuum vessel. The vertical interstices between successive turns of the coil afford lineal, axial, high-vacuum passages between open mouths at top and bottom of said vessel, while the coil, being cold by virtue of thermal contact of its innermost turn with the nitrogen pot, affords expansive proximate condensation surfaces. (AEC)

Milleron, N.

1963-03-12T23:59:59.000Z

7

S Se  

NLE Websites -- All DOE Office Websites (Extended Search)

Se Se er rp pe en nt ti in ne e S St ty yl le e C Co oi il l W Wi in nd di in ng gs s f fo or r B BE EP PC C- -I II I I IR R M Ma ag gn ne et t P Pr ro od du uc ct ti io on n V Viid de eo oc co on nffe er re en nc ce e B Be ettw we ee en n IIH HE EP P a an nd d B BN NL L S Sc ch he ed du ulle ed d ffo or r M Ma ar rc ch h 3 3,, 2 20 00 04 4 o on n B BE EP PC C- -IIII S SC C M Ma ag gn ne ett P Pr ro od du uc cttiio on n.. Presented by Brett Parker/BNL - SMD First SCQ Production Coil Winding 7 0 0 Z (mm) 300 200 100 θ (deg.) 5 0 0 Z (mm) θ (deg.) O Or ri ig gi in na al l D Do ou ub bl le e- -L La ay ye er r B BE EP PC C- -I II I C Co oi il l W Wi in nd di in ng g P Pa at tt te er rn ns s f fo or r S SC CB B a an nd d S SC CQ Q. . The plan had been to wind one coil pole and then stop winding to fill in gaps with G10 before adding new substrate and then continue winding the same pole in the second layer. This was maybe not so bad for SCB where we would have had to stop/start twice but for the four double-layer SCQ we would have had sixteen stop/starts

8

Microfabricated Ion Traps  

E-Print Network (OSTI)

Ion traps offer the opportunity to study fundamental quantum systems with high level of accuracy highly decoupled from the environment. Individual atomic ions can be controlled and manipulated with electric fields, cooled to the ground state of motion with laser cooling and coherently manipulated using optical and microwave radiation. Microfabricated ion traps hold the advantage of allowing for smaller trap dimensions and better scalability towards large ion trap arrays also making them a vital ingredient for next generation quantum technologies. Here we provide an introduction into the principles and operation of microfabricated ion traps. We show an overview of material and electrical considerations which are vital for the design of such trap structures. We provide guidance in how to choose the appropriate fabrication design, consider different methods for the fabrication of microfabricated ion traps and discuss previously realized structures. We also discuss the phenomenon of anomalous heating of ions within ion traps, which becomes an important factor in the miniaturization of ion traps.

Marcus D. Hughes; Bjoern Lekitsch; Jiddu A. Broersma; Winfried K. Hensinger

2011-01-17T23:59:59.000Z

9

Superconducting microfabricated ion traps  

E-Print Network (OSTI)

We fabricate superconducting ion traps with niobium and niobium nitride and trap single [superscript 88]Sr ions at cryogenic temperatures. The superconducting transition is verified and characterized by measuring the ...

Wang, Shannon Xuanyue

10

Steam Trap Application  

E-Print Network (OSTI)

The effective application of steam traps encompasses three primary areas which are the selection and sizing, the installation, and the monitoring of the steam trapping system. Proper application of steam traps will improve production rates, product quality, and reduce energy and maintenance costs.

Murphy, J. J.

1982-01-01T23:59:59.000Z

11

Ion trap simulation tools.  

Science Conference Proceedings (OSTI)

Ion traps present a potential architecture for future quantum computers. These computers are of interest due to their increased power over classical computers stemming from the superposition of states and the resulting capability to simultaneously perform many computations. This paper describes a software application used to prepare and visualize simulations of trapping and maneuvering ions in ion traps.

Hamlet, Benjamin Roger

2009-02-01T23:59:59.000Z

12

Superconducting microfabricated ion traps  

E-Print Network (OSTI)

We fabricate superconducting ion traps with niobium and niobium nitride and trap single 88Sr ions at cryogenic temperatures. The superconducting transition is verified and characterized by measuring the resistance and critical current using a 4-wire measurement on the trap structure, and observing change in the rf reflection. The lowest observed heating rate is 2.1(3) quanta/sec at 800 kHz at 6 K and shows no significant change across the superconducting transition, suggesting that anomalous heating is primarily caused by noise sources on the surface. This demonstration of superconducting ion traps opens up possibilities for integrating trapped ions and molecular ions with superconducting devices.

Shannon X. Wang; Yufei Ge; Jaroslaw Labaziewicz; Eric Dauler; Karl Berggren; Isaac L. Chuang

2010-10-28T23:59:59.000Z

13

Microfabricated Ion Traps  

E-Print Network (OSTI)

Ion traps offer the opportunity to study fundamental quantum systems with high level of accuracy highly decoupled from the environment. Individual atomic ions can be controlled and manipulated with electric fields, cooled to the ground state of motion with laser cooling and coherently manipulated using optical and microwave radiation. Microfabricated ion traps hold the advantage of allowing for smaller trap dimensions and better scalability towards large ion trap arrays also making them a vital ingredient for next generation quantum technologies. Here we provide an introduction into the principles and operation of microfabricated ion traps. We show an overview of material and electrical considerations which are vital for the design of such trap structures. We provide guidance in how to choose the appropriate fabrication design, consider different methods for the fabrication of microfabricated ion traps and discuss previously realized structures. We also discuss the phenomenon of anomalous heating of ions with...

Hughes, Marcus D; Broersma, Jiddu A; Hensinger, Winfried K

2011-01-01T23:59:59.000Z

14

Midea: Order (2010-SE-0110, 2012-SE-1402, 2012-SE-1404, 2013-SE-1401) |  

NLE Websites -- All DOE Office Websites (Extended Search)

Midea: Order (2010-SE-0110, 2012-SE-1402, 2012-SE-1404, Midea: Order (2010-SE-0110, 2012-SE-1402, 2012-SE-1404, 2013-SE-1401) Midea: Order (2010-SE-0110, 2012-SE-1402, 2012-SE-1404, 2013-SE-1401) November 26, 2012 DOE ordered Midea America Corp., Hefei Hualing Co., Ltd., and China Refrigeration Industry Co., Ltd., to pay a $4,579,949 ($4,562,838 plus one percent interest) civil penalty after finding Midea had manufactured and distributed in commerce in the U.S. a large quantity of basic models HD-l46F, HS-390C, UL-WD145-D, and UL-WD195-D of noncompliant refrigerator-freezers and freezers. The Order adopted a Compromise Agreement, which reflected settlement terms between DOE and Midea. Midea: Order (2010-SE-0110, 2012-SE-1402, 2012-SE-1404, 2013-SE-1401) More Documents & Publications Midea: Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404)

15

Evaluating Steam Trap Performance  

E-Print Network (OSTI)

Laboratory tests were conducted on several types of steam traps at Holston Defense Corporation in Kingsport, Tennessee. Data from these tests, which determined their relative efficiencies, were used in performing economic analyses to determine their equivalent uniform annual cost (EUAC). The comparison was made using a computer program written for the Apple II computer to evaluate overall steam trap economics. This program calculates the EUAC for any steam trap based on 12 input variables including capital, maintenance and steam costs, interest rate and trap life. After determinIng the EUAC, the program will perform sensitivity analyses on any of the twelve variables. (This computer program is available from the author.) This study shows that inverted bucket traps have lower EUAC's under more conditions than other types of traps. Also, this study shows that live steam loss is the heaviest contributor to the annual operating cost of any steam trap and that maintenance frequency and repair cost are also more important than a trap's first cost.

Fuller, N. Y.

1986-06-01T23:59:59.000Z

16

Nonlinear integrable ion traps  

Science Conference Proceedings (OSTI)

Quadrupole ion traps can be transformed into nonlinear traps with integrable motion by adding special electrostatic potentials. This can be done with both stationary potentials (electrostatic plus a uniform magnetic field) and with time-dependent electric potentials. These potentials are chosen such that the single particle Hamilton-Jacobi equations of motion are separable in some coordinate systems. The electrostatic potentials have several free adjustable parameters allowing for a quadrupole trap to be transformed into, for example, a double-well or a toroidal-well system. The particle motion remains regular, non-chaotic, integrable in quadratures, and stable for a wide range of parameters. We present two examples of how to realize such a system in case of a time-independent (the Penning trap) as well as a time-dependent (the Paul trap) configuration.

Nagaitsev, S.; /Fermilab; Danilov, V.; /SNS Project, Oak Ridge

2011-10-01T23:59:59.000Z

17

Workshop on Ion Trap Technology  

Science Conference Proceedings (OSTI)

... optical components, conventional and microfabricated ion traps, and classical control ... will bring together experts on trapped-ion physics, laser optics ...

2011-03-01T23:59:59.000Z

18

Steam trap monitor  

DOE Patents (OSTI)

A steam trap monitor positioned downstream of a steam trap in a closed steam system includes a first sensor (a hot finger) for measuring the energy of condensate and a second sensor (a cold finger) for measuring the total energy of condensate and steam in the line. The hot finger includes one or more thermocouples for detecting condensate level and energy, while the cold finger contains a liquid with a lower boiling temperature than that of water. Vapor pressure from the liquid is used to do work such as displacing a piston or bellow in providing an indication of total energy (steam + condensate) of the system. Processing means coupled to and responsive to outputs from the hot and cold fingers subtracts the former from the latter to provide an indication of the presence of steam downstream from the trap indicating that the steam trap is malfunctioning. 2 figs.

Ryan, M.J.

1987-05-04T23:59:59.000Z

19

Asymmetric ion trap  

DOE Patents (OSTI)

An ion trap having two end cap electrodes disposed asymmetrically about a center of a ring electrode. The inner surface of the end cap electrodes are conformed to an asymmetric pair of equipotential lines of the harmonic formed by the application of voltages to the electrodes. The asymmetry of the end cap electrodes allows ejection of charged species through the closer of the two electrodes which in turn allows for simultaneously detecting anions and cations expelled from the ion trap through the use of two detectors charged with opposite polarity.

Barlow, Stephan E. (Richland, WA); Alexander, Michael L. (Richland, WA); Follansbee, James C. (Pasco, WA)

1997-01-01T23:59:59.000Z

20

Steam trap monitor  

DOE Patents (OSTI)

A steam trap monitor positioned downstream of a steam trap in a closed steam system includes a first sensor (the combination of a hot finger and thermocouple well) for measuring the energy of condensate and a second sensor (a cold finger) for measuring the total energy of condensate and steam in the line. The hot finger includes one or more thermocouples for detecting condensate level and energy, while the cold finger contains a liquid with a lower boiling temperature than that of water. Vapor pressure from the liquid is used to do work such as displacing a piston or bellows in providing an indication of total energy (steam+condensate) of the system. Processing means coupled to and responsive to outputs from the thermocouple well hot and cold fingers subtracts the condensate energy as measured by the hot finger and thermocouple well from the total energy as measured by the cold finger to provide an indication of the presence of steam downstream from the trap indicating that the steam trap is malfunctioning.

Ryan, Michael J. (Plainfield, IL)

1988-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hor se trap" 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

Venus Fly Trap Experiment  

NLE Websites -- All DOE Office Websites (Extended Search)

Venus Fly Trap Experiment Venus Fly Trap Experiment Name: Jeremy Bailey Status: N/A Age: N/A Location: N/A Country: N/A Date: N/A Question: My name is Jeremy Bailey, and I am a student of Dorseyville Middle School. I have been working on a science project about Venus' Fly Traps. A recent addition to the project involved designing an experiment about something I found interesting about them. However, I don't know where to get them or how to grow them in the moderate climate of Pittsburgh. Also, I don't know how a successful experiment could be designed. Replies: Jeremy, I believe Venus Fly traps can be found 'in the wild' in the coastal floodplain of the Carolinas. As far as where to buy them, look in the phonebook yellow pages under plants or houseplants and do some calling. I live in eastern Pennsylvania, and over here they even sell them in hardware stores like Hechinger's and Home Depot (in their garden departments). I don't think you will have luck trying to grow them outside, our winters here are a bit too harsh for them. From what I recall they require substantial moisture and more moderate climes. You might try looking for houseplant books at your local library for more detailed information.

22

WATER-TRAPPED WORLDS  

Science Conference Proceedings (OSTI)

Although tidally locked habitable planets orbiting nearby M-dwarf stars are among the best astronomical targets to search for extrasolar life, they may also be deficient in volatiles and water. Climate models for this class of planets show atmospheric transport of water from the dayside to the nightside, where it is precipitated as snow and trapped as ice. Since ice only slowly flows back to the dayside upon accumulation, the resulting hydrological cycle can trap a large amount of water in the form of nightside ice. Using ice sheet dynamical and thermodynamical constraints, I illustrate how planets with less than about a quarter the Earth's oceans could trap most of their surface water on the nightside. This would leave their dayside, where habitable conditions are met, potentially dry. The amount and distribution of residual liquid water on the dayside depend on a variety of geophysical factors, including the efficiency of rock weathering at regulating atmospheric CO{sub 2} as dayside ocean basins dry up. Water-trapped worlds with dry daysides may offer similar advantages as land planets for habitability, by contrast with worlds where more abundant water freely flows around the globe.

Menou, Kristen [Department of Astronomy, Columbia University, 550 West 120th Street, New York, NY 10027 (United States)

2013-09-01T23:59:59.000Z

23

Nuclear Physics with trapped  

E-Print Network (OSTI)

Nuclear Physics with trapped atoms and ions #12;2/2/2013Dan Melconian #12;2/2/2013Dan Melconian Outline · Scope and applications of nuclear physics precision frontier compliments LHC properties and aquifers in the Sahara #12;2/2/2013Dan Melconian What is Nuclear Physics? · Began with the study

Boas, Harold P.

24

DNA Separation Using Photoelectrophoretic Traps  

SciTech Connect

In our recent publications we presented a design that allows formation of highly localized and optically controlled electrophoretic traps. 1,2 We demonstrated that electrophoretic traps can be utilized for biomolecule photoconcentration, optically directed transport, and separation by size. 1,2 In the current publication we suggest a hybrid design for biomolecule separation which implements electrophoretic traps in tandem with well-established electrophoretic techniques. We perform Monte Carlo simulations that demonstrate that the resolution of well-established electrophoretic techniques can be greatly enhanced by introducing photoelectrophoretic traps.

Braiman, Avital [ORNL; Thundat, Thomas George [ORNL; Rudakov, Fedor M [ORNL

2011-01-01T23:59:59.000Z

25

Electron Trapping by Molecular Vibration  

NLE Websites -- All DOE Office Websites (Extended Search)

Electron Trapping by Molecular Vibration Print In photoelectron spectroscopy experiments performed at the ALS, a group of researchers has found that electronic transitions normally...

26

Laser Cooling of Trapped Ions.  

Science Conference Proceedings (OSTI)

... period, so it can be assumed to give an in- stantaneous impulse to the ... In sympathetic laser cooling, two different ion species are loaded into a trap. ...

2002-11-15T23:59:59.000Z

27

Theory and application of planar ion traps  

E-Print Network (OSTI)

In this thesis, we investigate a new geometry of Paul trap with electrodes in a plane. These planar ion traps are compatible with modern silicon microfabrication, and can be scaled up to large arrays with multiple trapping ...

Pearson, Christopher Elliott

2006-01-01T23:59:59.000Z

28

First Attempts at Antihydrogen Trapping in ALPHA  

SciTech Connect

The ALPHA apparatus is designed to produce and trap antihydrogen atoms. The device comprises a multifunction Penning trap and a superconducting, neutral atom trap having a minimum-B configuration. The atom trap features an octupole magnet for transverse confinement and solenoidal mirror coils for longitudinal confinement. The magnetic trap employs a fast shutdown system to maximize the probability of detecting the annihilation of released antihydrogen. In this article we describe the first attempts to observe antihydrogen trapping.

Andresen, G. B.; Bowe, P. D.; Hangst, J. S. [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark); Bertsche, W.; Butler, E.; Charlton, M.; Humphries, A. J.; Jenkins, M. J.; Joergensen, L. V.; Madsen, N.; Werf, D. P. van der [Department of Physics, Swansea University, Swansea SA2 8PP (United Kingdom); Bray, C. C.; Chapman, S.; Fajans, J.; Povilus, A.; Wurtele, J. S. [Department of Physics, University of California at Berkeley, Berkeley, CA 94720-7300 (United States); Cesar, C. L.; Lambo, R.; Silveira, D. M. [Instituto de Fisica Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-972 (Brazil); Fujiwara, M. C. [TRIUMF, 4004 Wesbrook Mall, Vancouver BC, V6T 2A3 (Canada)] (and others)

2008-08-08T23:59:59.000Z

29

Trapped Quintessential Inflation  

E-Print Network (OSTI)

Quintessential inflation is studied using a string modulus as the inflaton - quintessence field. The modulus begins its evolution at the steep part of its scalar potential, which is due to non-perturbative effects (e.g. gaugino condensation). It is assumed that the modulus crosses an enhanced symmetry point (ESP) in field space. Particle production at the ESP temporarily traps the modulus resulting in a brief period of inflation. More inflation follows, due to the flatness of the potential, since the ESP generates either an extremum (maximum or minimum) or a flat inflection point in the scalar potential. Eventually, the potential becomes steep again and inflation is terminated. After reheating the modulus freezes due to cosmological friction at a large value, such that its scalar potential is dominated by contributions due to fluxes in the extra dimensions or other effects. The modulus remains frozen until the present, when it can become quintessence and account for the dark energy necessary to explain the observed accelerated expansion.

J. C. Bueno Sanchez; K. Dimopoulos

2006-05-26T23:59:59.000Z

30

Cs-Se (Cesium - Selenium)  

Science Conference Proceedings (OSTI)

Cs-Se crystallographic data...Cs-Se crystallographic data Phase Composition, wt% Se Pearson symbol Space group (Cs) 0 cI 2 Im m Cs 2 Se 22.9 oP 12 Pnma Cs 3 Se 2 28 ? ? Cs 5 Se 4 32.2 ? ? CsSe 37.3 ? ? Cs 2 Se 3 47 oC 20 Cmc 2 1 Cs 2 Se 5 59.7 oP 28 P 2 1 2 1 2 1 (Se) 100 hP 3 P 3 1 2 1 High-pressure phase Cs 2 Se 22.9 oF 24 Fdd 2...

31

Inspect and Repair Steam Traps  

SciTech Connect

This revised ITP tip sheet on inspecting and repairing steam traps provide how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

Not Available

2006-01-01T23:59:59.000Z

32

Midea: Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404) |  

NLE Websites -- All DOE Office Websites (Extended Search)

Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404) Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404) Midea: Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404) November 20, 2012 DOE alleged in a Notice of Proposed Civil Penalty that Midea America Corp., Hefei Hualing Co., Ltd., and China Refrigeration Industry Co., Ltd. manufactured and distributed noncompliant refrigerator-freezers and freezers in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Midea: Proposed Penalty (2010-SE-0110, 2012-SE-1402, 2012-SE-1404)

33

Electronic Trap States in Methanofullerenes  

E-Print Network (OSTI)

The trap states in three fullerene derivatives, namely PC61BM ([6,6]-phenyl C61 butyric acid methyl ester), bisPC61BM (bis[6,6]-phenyl C61 butyric acid methyl ester) and PC71BM ([6,6]-phenyl C71 butyric acid methyl ester), are investigated by thermally stimulated current measurements (TSC). Thereby, the lower limit of the trap densities for all studied methanofullerenes exhibits values in the order of 10^22 m^-3 with the highest trap density in bisPC61BM and the lowest in PC61BM. Fractional TSC measurements on PC61BM reveal a broad trap distribution instead of discrete trap levels with activation energies ranging from 15 meV to 270 meV and the maximum at about 75 meV. The activation energies of the most prominent traps in the other two fullerene derivatives are significantly higher, being at 96 meV and 223 meV for PC71BM and 184 meV for bisPC61BM, respectively. The influence of these findings on the performance of organic solar cells is discussed.

Julia Schafferhans; Carsten Deibel; Vladimir Dyakonov

2011-07-18T23:59:59.000Z

34

Charge transport in mixed CdSe and CdTe colloidal nanocrystal films  

E-Print Network (OSTI)

We report the influence of trap states on charge transport through films of mixed CdTe and CdSe nanocrystals (NCs) between lateral electrodes, through layered films of CdTe and CdSe NCs in a layered geometry, and through ...

Bawendi, Moungi G.

35

Electron Trapping by Molecular Vibration  

NLE Websites -- All DOE Office Websites (Extended Search)

Electron Trapping by Molecular Vibration Print Electron Trapping by Molecular Vibration Print In photoelectron spectroscopy experiments performed at the ALS, a group of researchers has found that electronic transitions normally thought to be forbidden can in fact be excited in conjunction with certain types of molecular vibrations. Specifically, they found that when the symmetry of a linear triatomic molecule is broken by asymmetric vibrational modes, photoelectrons can become temporarily trapped by the molecule before ultimately escaping, giving rise to a broad feature in the photoelectron spectrum known as a shape resonance. This process represents a novel type of symmetry-breaking phenomenon that has not been observed previously but appears to be widespread. Such coupling between electronic motion and nuclear motion becomes increasingly important as scientists learn more about the geometry and dynamics of novel chemical structures such as those found in nanodevices and transient chemical species, and the results have implications for studies that use photoelectron spectroscopy as a diagnostic tool.

36

Electron Trapping by Molecular Vibration  

NLE Websites -- All DOE Office Websites (Extended Search)

Electron Trapping by Molecular Vibration Print Electron Trapping by Molecular Vibration Print In photoelectron spectroscopy experiments performed at the ALS, a group of researchers has found that electronic transitions normally thought to be forbidden can in fact be excited in conjunction with certain types of molecular vibrations. Specifically, they found that when the symmetry of a linear triatomic molecule is broken by asymmetric vibrational modes, photoelectrons can become temporarily trapped by the molecule before ultimately escaping, giving rise to a broad feature in the photoelectron spectrum known as a shape resonance. This process represents a novel type of symmetry-breaking phenomenon that has not been observed previously but appears to be widespread. Such coupling between electronic motion and nuclear motion becomes increasingly important as scientists learn more about the geometry and dynamics of novel chemical structures such as those found in nanodevices and transient chemical species, and the results have implications for studies that use photoelectron spectroscopy as a diagnostic tool.

37

hor_pone.0043844 1..9  

NLE Websites -- All DOE Office Websites (Extended Search)

journal.pone.0043844.t001 Figure 2. Protection of DNA by M.CbeI or M.HaeIII from digestion in vitro. In each panel, lane 1 is unmethylated plasmid DNA (pUC18) isolated...

38

Electron Trapping by Molecular Vibration  

NLE Websites -- All DOE Office Websites (Extended Search)

Electron Trapping by Molecular Electron Trapping by Molecular Vibration Electron Trapping by Molecular Vibration Print Wednesday, 27 April 2005 00:00 In photoelectron spectroscopy experiments performed at the ALS, a group of researchers has found that electronic transitions normally thought to be forbidden can in fact be excited in conjunction with certain types of molecular vibrations. Specifically, they found that when the symmetry of a linear triatomic molecule is broken by asymmetric vibrational modes, photoelectrons can become temporarily trapped by the molecule before ultimately escaping, giving rise to a broad feature in the photoelectron spectrum known as a shape resonance. This process represents a novel type of symmetry-breaking phenomenon that has not been observed previously but appears to be widespread. Such coupling between electronic motion and nuclear motion becomes increasingly important as scientists learn more about the geometry and dynamics of novel chemical structures such as those found in nanodevices and transient chemical species, and the results have implications for studies that use photoelectron spectroscopy as a diagnostic tool.

39

Trapped-flux superconducting memory  

Science Conference Proceedings (OSTI)

A memory cell based on trapped flux in superconductors has been built and tested. The cell is constructed entirely by vacuum evaporation of thin films and can be selected by coincident current or by other techniques, with drive-current requirements less ...

J. W. Crowe

1957-10-01T23:59:59.000Z

40

Long-Wave Trapping by Oceanic Ridges  

Science Conference Proceedings (OSTI)

Long waves are affected by bottom topography and under certain conditions may be trapped along topographical contours which then act as wave guides transmitting wave energy for great distances with little loss. This study examines waves trapped ...

Richard Paul Shaw; Wayne Neu

1981-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "hor se trap" 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

A Neutrally Buoyant, Upper Ocean Sediment Trap  

Science Conference Proceedings (OSTI)

The authors have designed and deployed a neutrally buoyant sediment trap (NBST) intended for use in the upper ocean. The aim was to minimize hydrodynamic flow interference by making a sediment trap that drifted freely with the ambient current. ...

James R. Valdes; James F. Price

2000-01-01T23:59:59.000Z

42

Inertial measurement via dynamics of trapped particles  

E-Print Network (OSTI)

We describe theoretical and practical aspects of the particle trap as an inertial sensor. The insight motivating this approach is that a trapped particle acts like a mass on a spring, but the restoring forces are provided ...

Post, E. Rehmi, 1966-

2003-01-01T23:59:59.000Z

43

Midea: Amended Noncompliance Determination (2010-SE-0110, 2012-SE-1402) |  

NLE Websites -- All DOE Office Websites (Extended Search)

Amended Noncompliance Determination (2010-SE-0110, Amended Noncompliance Determination (2010-SE-0110, 2012-SE-1402) Midea: Amended Noncompliance Determination (2010-SE-0110, 2012-SE-1402) November 26, 2012 DOE issued an Amended Notice of Noncompliance Determination to Midea America Corp., Hefei Hualing Co., Ltd., and China Refrigeration Industry Co., Ltd. finding that basic model HD-146F, a refrigerator-freezer, and basic model HS-390C, a freezer, do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Midea must immediately notify each person (or company) to whom Midea distributed the noncompliant products that the product does not meet Federal standards. In addition, Midea must provide to DOE documents and records showing the number of units Midea distributed

44

Solon SE | Open Energy Information  

Open Energy Info (EERE)

Berlin, Germany Zip D-12489 Sector Solar Product Manufacturer of PV modules and tracking systems, and integrator of solar systems. References Solon SE1 LinkedIn Connections...

45

Determination of Hydrogen Peak Temperatures and Trapping ...  

Science Conference Proceedings (OSTI)

Presentation Title, Determination of Hydrogen Peak Temperatures and Trapping Energies of Various Lattice Defects In Iron Using Thermal Desorption...

46

Capturing Energy Savings with Steam Traps  

E-Print Network (OSTI)

This paper will discuss the energy savings potential of steam traps and present the energy, economic, and environmental reason why an active steam trap maintenance program is good for the company's bottom line. Several case studies will be discussed to demonstrate the merits of steam trap technology.

Bockwinkel, R. G.; French, S. A.

1997-04-01T23:59:59.000Z

47

The Elimination of Steam Traps  

E-Print Network (OSTI)

How would you like to have a share of $154,000,000,000 a year? According to the Department of Energy that is roughly what was spent for creating steam in 1978. Steam generation accounts for fully one half of the industrial and commercial energy dollar. That figure could be reduced by 10-20% or more by the simple elimination of steam traps. Recent engineering developments show that steam traps can be eliminated. Documented results demonstrate that the retrofitting of existing facilities to alternative methods of condensate removal is simple and economically feasible, with paybacks of less than 12 months. Advantages obtained in the first year remain consistent for several years after conversion with virtual elimination of maintenance.

Dickman, F.

1985-05-01T23:59:59.000Z

48

Transparent ion trap with integrated photodetector  

E-Print Network (OSTI)

Fluorescence collection sets the efficiency of state detection and the rate of entanglement generation between remote trapped ion qubits. Despite efforts to improve light collection using various optical elements, solid angle capture is limited to ~10% for implementations that are scalable to many ions. We present an approach based on fluorescence detection through a transparent trap using an integrated photodetector, combining collection efficiency approaching 50% with scalability. We microfabricate transparent surface traps with indium tin oxide and verify stable trapping of single ions. The fluorescence from a cloud of ions is detected using a photodiode sandwiched with a transparent trap.

Amira M. Eltony; Shannon X. Wang; Gleb M. Akselrod; Peter F. Herskind; Isaac L. Chuang

2012-12-06T23:59:59.000Z

49

Transparent ion trap with integrated photodetector  

E-Print Network (OSTI)

Fluorescence collection sets the efficiency of state detection and the rate of entanglement generation between remote trapped ion qubits. Despite efforts to improve light collection using various optical elements, solid angle capture is limited to ~10% for implementations that are scalable to many ions. We present an approach based on fluorescence detection through a transparent trap using an integrated photodetector, combining collection efficiency approaching 50% with scalability. We microfabricate transparent surface traps with indium tin oxide and verify stable trapping of single ions. The fluorescence from a cloud of ions is detected using a photodiode sandwiched with a transparent trap.

Eltony, Amira M; Akselrod, Gleb M; Herskind, Peter F; Chuang, Isaac L

2012-01-01T23:59:59.000Z

50

Texas A&M Penning Trap Facility - Design of the Measurement Trap  

E-Print Network (OSTI)

A tandem Penning trap facility has been designed and is under construction at the Texas A&M University Cyclotron Institute (TAMU-TRAP). The initial experimental program will be the study of correlation parameters for T=2 superallowed beta-delayed proton emitters. The measurement trap is a unique large-bore optimized 5-electrode cylindrical Penning trap, which features a 90 mm free radius, larger than in any existing Penning trap. This novel geometry allows for full radial containment of decay products of interest. The trap has also been designed to exhibit a "tunable" and "orthogonalized" geometry, which is useful for alternate experiments.

Mehlman, M; Shidling, P D

2012-01-01T23:59:59.000Z

51

Texas A&M Penning Trap Facility - Design of the Measurement Trap  

E-Print Network (OSTI)

A tandem Penning trap facility has been designed and is under construction at the Texas A&M University Cyclotron Institute (TAMU-TRAP). The initial experimental program will be the study of correlation parameters for T=2 superallowed beta-delayed proton emitters. The measurement trap is a unique large-bore optimized 5-electrode cylindrical Penning trap, which features a 90 mm free radius, larger than in any existing Penning trap. This novel geometry allows for full radial containment of decay products of interest. The trap has also been designed to exhibit a "tunable" and "orthogonalized" geometry, which is useful for alternate experiments.

M. Mehlman; D. Melconian; P. D. Shidling

2012-08-20T23:59:59.000Z

52

Trapping Rydberg Atoms in an Optical Lattice  

Science Conference Proceedings (OSTI)

Rubidium Rydberg atoms are laser excited and subsequently trapped in a one-dimensional optical lattice (wavelength 1064 nm). Efficient trapping is achieved by a lattice inversion immediately after laser excitation using an electro-optic technique. The trapping efficiency is probed via analysis of the trap-induced shift of the two-photon microwave transition 50S{yields}51S. The inversion technique allows us to reach a trapping efficiency of 90%. The dependence of the efficiency on the timing of the lattice inversion and on the trap laser power is studied. The dwell time of 50D{sub 5/2} Rydberg atoms in the lattice is analyzed using lattice-induced photoionization.

Anderson, S. E.; Younge, K. C.; Raithel, G. [FOCUS Center, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)

2011-12-23T23:59:59.000Z

53

Trapping and Measuring Charged Particles in Liquids  

Genome sequencing especially benefits from the nanoscale approach. The trap is a three-layer, three-dimensional crossing metal/insulator structure.

54

Trapping and Measuring Charged Particles in Liquids  

Using molecular dynamics simulations, the researchers found that particles are trapped in liquid environments when appropriate AC/DC electric fields ...

55

Ion Trap in a Semiconductor Chip  

E-Print Network (OSTI)

The electromagnetic manipulation of isolated atoms has led to many advances in physics, from laser cooling and Bose-Einstein condensation of cold gases to the precise quantum control of individual atomic ion. Work on miniaturizing electromagnetic traps to the micrometer scale promises even higher levels of control and reliability. Compared with 'chip traps' for confining neutral atoms, ion traps with similar dimensions and power dissipation offer much higher confinement forces and allow unparalleled control at the single-atom level. Moreover, ion microtraps are of great interest in the development of miniature mass spectrometer arrays, compact atomic clocks, and most notably, large scale quantum information processors. Here we report the operation of a micrometer-scale ion trap, fabricated on a monolithic chip using semiconductor micro-electromechanical systems (MEMS) technology. We confine, laser cool, and measure heating of a single 111Cd+ ion in an integrated radiofrequency trap etched from a doped gallium arsenide (GaAs) heterostructure.

D. Stick; W. K. Hensinger; S. Olmschenk; M. J. Madsen; K. Schwab; C. Monroe

2006-01-09T23:59:59.000Z

56

Parameter exploration of optically trapped liquid aerosols  

E-Print Network (OSTI)

When studying the motion of optically trapped particles on the $\\mu s$ time scale, in low viscous media such as air, inertia cannot be neglected. Resolution of unusual and interesting behaviour not seen in colloidal trapping experiments is possible. In attempt to explain the phenomena we use power spectral methods to perform a parameter study of the Brownian motion of optically trapped liquid aerosol droplets concentrated around the critically damped regime. We present evidence that the system is suitably described by a simple harmonic oscillator model which must include a description of Fax\\'{e}n's correction, but not necessarily frequency dependent hydrodynamic corrections to Stokes' law. We also provide results describing how the system behaves under several variables and discuss the difficulty in decoupling the parameters responsible for the observed behaviour. We show that due to the relatively low dynamic viscosity and high trap stiffness it is easy to transfer between over- and under-damped motion by experimentally altering either trap stiffness or damping. Our results suggest stable aerosol trapping may be achieved in under-damped conditions, but the onset of deleterious optical forces at high trapping powers prevents the probing of the upper stability limits due to Brownian motion.

D. R. Burnham; P. J. Reece; D. McGloin

2009-07-27T23:59:59.000Z

57

Controlling trapping and ejection of ions from multipole ...  

Controlling trapping and ejection of ions from multipole guides and traps ... The concept can be used to control the kinetic energy of the

58

Anisotropy in CdSe quantum rods  

E-Print Network (OSTI)

in synthesizing monodisperse CdSe nanorods has allowed us toout the phase diagram of the CdSe nanorod solution in order2. Controlled Synthesis of CdSe Nanorods 2.1 Introduction In

Li, Liang-shi

2003-01-01T23:59:59.000Z

59

Laser cooling and trapping of neutral atoms*  

Science Conference Proceedings (OSTI)

... 1 m/s, any gas in equilibrium (other than spin-polarized atomic hydro- ... lattice-trapped atoms, a physical picture with the simplicity and power of the ...

2010-08-23T23:59:59.000Z

60

Trapped Ions and Laser Cooling 11  

Science Conference Proceedings (OSTI)

... 2 GHz I ... monic well, eg, the absorption spectrum for the secular motion in an rf trap ... a sin- gle atom [mass of 100 u (atomic mass units)] starts from rest ...

2002-08-07T23:59:59.000Z

Note: This page contains sample records for the topic "hor se trap" 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

Microfabrication techniques for trapped ion quantum ...  

Science Conference Proceedings (OSTI)

... used for micro-traps, starting with stacking multiple wafers to form a ... dc rf dc rf dc ... This section starts with a description of the tried and true gold-on ...

2010-07-21T23:59:59.000Z

62

Shale gas is natural gas trapped inside  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Shale gas is natural gas trapped inside formations of shale - fine grained sedimentary rocks that can be rich sources of petroleum and natural gas. Just a few years ago, much of...

63

Trapping of strangelets in the geomagnetic field  

E-Print Network (OSTI)

Strangelets coming from the interstellar medium (ISM) are an interesting target to experiments searching for evidence of this hypothetic state of hadronic matter. We entertain the possibility of a {\\it trapped} strangelet population, quite analogous to ordinary nuclei and electron belts. For a population of strangelets to be trapped by the geomagnetic field, these incoming particles would have to fulfill certain conditions, namely having magnetic rigidities above the geomagnetic cutoff and below a certain threshold for adiabatic motion to hold. We show in this work that, for fully ionized strangelets, there is a narrow window for stable trapping. An estimate of the stationary population is presented and the dominant loss mechanisms discussed. It is shown that the population would be substantially enhanced with respect to the ISM flux (up to two orders of magnitude) due to quasi-stable trapping.

L. Paulucci; J. E. Horvath; G. A. Medina-Tanco

2007-07-22T23:59:59.000Z

64

Trapping of strangelets in the geomagnetic field  

Science Conference Proceedings (OSTI)

Strangelets arriving from the interstellar medium are an interesting target for experiments searching for evidence of this hypothetical state of hadronic matter. We entertain the possibility of a trapped strangelet population, quite analogous to ordinary nuclei and electron belts. For a population of strangelets to be trapped by the geomagnetic field, these incoming particles would have to fulfill certain conditions, namely, having magnetic rigidities above the geomagnetic cutoff and below a certain threshold for adiabatic motion to hold. We show in this work that, for fully ionized strangelets, there is a narrow window for stable trapping. An estimate of the stationary population is presented and the dominant loss mechanisms discussed. It is shown that the population would be substantially enhanced with respect to the interstellar medium flux (up to 2 orders of magnitude) due to quasistable trapping.

Paulucci, L.; Horvath, J. E.; Medina-Tanco, G. A. [Instituto de Fisica-Universidade de Sao Paulo, Rua do Matao, Travessa R, 187, 05508-090, Cidade Universitaria, Sao Paulo SP (Brazil); Instituto de Astronomia, Geofisica e Ciencias Atmosfericas-Universidade de Sao Paulo, Rua do Matao, 1226, 05508-900, Cidade Universitaria, Sao Paulo SP (Brazil); Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico A.P. 70-543, C.U. Mexico D.F. (Mexico)

2008-02-15T23:59:59.000Z

65

Trapping of strangelets in the geomagnetic field  

E-Print Network (OSTI)

Strangelets coming from the interstellar medium (ISM) are an interesting target to experiments searching for evidence of this hypothetic state of hadronic matter. We entertain the possibility of a {\\it trapped} strangelet population, quite analogous to ordinary nuclei and electron belts. For a population of strangelets to be trapped by the geomagnetic field, these incoming particles would have to fulfill certain conditions, namely having magnetic rigidities above the geomagnetic cutoff and below a certain threshold for adiabatic motion to hold. We show in this work that, for fully ionized strangelets, there is a narrow window for stable trapping. An estimate of the stationary population is presented and the dominant loss mechanisms discussed. It is shown that the population would be substantially enhanced with respect to the ISM flux (up to two orders of magnitude) due to quasi-stable trapping.

Paulucci, L; Medina-Tanco, G A

2007-01-01T23:59:59.000Z

66

FEMP-FTA--Steam Trap Performance Assessment  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Steam Trap Function Steam Trap Function Steam traps are automatic valves used in every steam system to remove conden- sate, air, and other non-condensable gases while preventing or minimizing the passing of steam. If condensate is allowed to collect, it reduces the flow capacity of steam lines and the thermal capacity of heat transfer equipment. In addition, excess condensate can lead to "water hammer," with potentially destructive and dangerous results. Air that remains after system startup reduces steam pressure and temperature and may also reduce the thermal capacity of heat transfer equipment. Non-condensable gases, such as oxygen and carbon dioxide, cause corrosion. Steam that passes through the trap provides no heating ser- vice. This effectively reduces the heating capacity

67

THERMODYNAMIC PROPERTIES OF SeS  

E-Print Network (OSTI)

Korenev, et al. used the CdS-CdSe and ZnS-ZnSe systemsto measure. For the CdS-CdSe system, Korenev, et al. wereVapor pressures for CdS and CdSe are better established. A

Huang, M.-D.

2011-01-01T23:59:59.000Z

68

Trapping and dark current in plasma-based accelerators  

SciTech Connect

The trapping of thermal electrons in a nonlinear plasma wave of arbitrary phase velocity is investigated. The threshold plasma wave amplitude for trapping plasma electrons is calculated, thereby determining the fraction trapped and the expected dark current in a plasma-based accelerator. It is shown that the presence of a laser field (e.g., trapping in the self-modulated regime of the laser wakefield accelerator) increases the trapping threshold. Implications for experimental and numerical laser-plasma studies are discussed.

Schroder, C.B.; Esarey, E.; Shadwick, B.A.; Leemans, W.P.

2004-06-01T23:59:59.000Z

69

Controlling trapping potentials and stray electric fields in a microfabricated ion trap through design and compensation  

E-Print Network (OSTI)

Recent advances in quantum information processing with trapped ions have demonstrated the need for new ion trap architectures capable of holding and manipulating chains of many (>10) ions. Here we present the design and detailed characterization of a new linear trap, microfabricated with scalable complementary metal-oxide-semiconductor (CMOS) techniques, that is well-suited to this challenge. Forty-four individually controlled DC electrodes provide the many degrees of freedom required to construct anharmonic potential wells, shuttle ions, merge and split ion chains, precisely tune secular mode frequencies, and adjust the orientation of trap axes. Microfabricated capacitors on DC electrodes suppress radio-frequency pickup and excess micromotion, while a top-level ground layer simplifies modeling of electric fields and protects trap structures underneath. A localized aperture in the substrate provides access to the trapping region from an oven below, permitting deterministic loading of particular isotopic/elemental sequences via species-selective photoionization. The shapes of the aperture and radio-frequency electrodes are optimized to minimize perturbation of the trapping pseudopotential. Laboratory experiments verify simulated potentials and characterize trapping lifetimes, stray electric fields, and ion heating rates, while measurement and cancellation of spatially-varying stray electric fields permits the formation of nearly-equally spaced ion chains.

S. Charles Doret; Jason M. Amini; Kenneth Wright; Curtis Volin; Tyler Killian; Arkadas Ozakin; Douglas Denison; Harley Hayden; C. -S. Pai; Richart E. Slusher; Alexa W. Harter

2012-04-18T23:59:59.000Z

70

Modular cryostat for ion trapping with surface-electrode ion traps  

E-Print Network (OSTI)

We present a simple cryostat purpose built for use with surface-electrode ion traps, designed around an affordable, large cooling power commercial pulse tube refrigerator. A modular vacuum enclosure with a single vacuum space facilitates interior access, and enables rapid turnaround and flexiblity for future modifications. Long rectangular windows provide nearly 360 degrees of optical access in the plane of the ion trap, while a circular bottom window near the trap enables NA 0.4 light collection without the need for in-vacuum optics. We evaluate the system's mechanical and thermal characteristics, and we quantify ion trapping performance by trapping 40Ca+, finding small stray electric fields, long ion lifetimes, and low ion heating rates.

Grahame Vittorini; Kenneth Wright; Kenneth R. Brown; Alexa W. Harter; S. Charles Doret

2013-02-20T23:59:59.000Z

71

Charge trapping in imidazolium ionic liquids  

NLE Websites -- All DOE Office Websites (Extended Search)

trapping in imidazolium ionic liquids trapping in imidazolium ionic liquids I. A. Shkrob and J. F. Wishart J. Phys. Chem. B 113, 5582-5592 (2009). [Find paper at ACS Publications] or use ACS Articles on Request Abstract: Room-temperature ionic liquids (ILs) are a promising class of solvents for applications ranging from photovoltaics to solvent extractions. Some of these applications involve the exposure of the ILs to ionizing radiation, which stimulates interest in their radiation and photo- chemistry. In the case of ILs consisting of 1,3-dialkylimidazolium cations and hydrophobic anions, ionization, charge transfer and redox reactions yield charge-trapped species thought to be radicals resulting from neutralization of the constituent ions. Using computational chemistry methods and the recent results on electron spin resonance (ESR) and transient absorption

72

Energy Savings Through Steam Trap Management  

E-Print Network (OSTI)

Sustainability and energy management are broad topics which have become a common focus in industry. Recognizing the need for greater cost reduction and competitive advantage through sustainability, industry is putting forth resources to improve energy management controls. When the topic of energy management relates to steam trap management however, the focus becomes less clear and action less notable. The seemingly low hanging fruit of steam traps are not often tied to significant and sustainable energy management projects. Typically this holds true because of the failure of industry to put a value on the cost of steam and because of the lack of energy tracking from failed steam traps as part of best practice. The use of technology can help industry transform how steam systems are managed and sustainability in steam systems is achieved.

Gibbs, C.

2008-01-01T23:59:59.000Z

73

THERMODYNAMIC PROPERTIES OF SeS  

E-Print Network (OSTI)

rights . ;, a 9 U (t,) -iii- THERMODYNAMIC PROPERTIES OF SeSSeS gas. only estimated thermodynamic data are Since groupinterest to study the thermodynamic properties of SeS in

Huang, M.-D.

2011-01-01T23:59:59.000Z

74

Thermal electric vapor trap arrangement and method  

DOE Patents (OSTI)

A technique for trapping vapor within a section of a tube is disclosed herein. This technique utilizes a conventional, readily providable thermal electric device having a hot side and a cold side and means for powering the device to accomplish this. The cold side of this device is positioned sufficiently close to a predetermined section of the tube and is made sufficiently cold so that any condensable vapor passing through the predetermined tube section is condensed and trapped, preferably within the predetermined tube section itself.

Alger, Terry (Tracy, CA)

1988-01-01T23:59:59.000Z

75

Marginally outer trapped surfaces in higher dimensions  

E-Print Network (OSTI)

We review the basic setup of Kaluza-Klein theory, namely a 5-dimensional vacuum with a cyclic isometry, which corresponds to Einstein-Maxwell-dilaton theory in 4-dimensional spacetime. We first recall the behaviour of Killing horizons and its generators under bundle lift and projection. We then show that the property of compact surfaces of being (stably) marginally trapped is preserved under lift and projection provided the appropriate ("Pauli-") conformal scaling is used for the spacetime metric. We also discuss and compare recently proven area inequalities for stable axially symmetric 2-dimensional and 3-dimensional marginally outer trapped surfaces.

Tim-Torben Paetz; Walter Simon

2013-02-13T23:59:59.000Z

76

Parametric Resonance of Optically Trapped Aerosols  

E-Print Network (OSTI)

The Brownian dynamics of an optically trapped water droplet are investigated across the transition from over to under-damped oscillations. The spectrum of position fluctuations evolves from a Lorentzian shape typical of over-damped systems (beads in liquid solvents), to a damped harmonic oscillator spectrum showing a resonance peak. In this later under-damped regime, we excite parametric resonance by periodically modulating the trapping power at twice the resonant frequency. The power spectra of position fluctuations are in excellent agreement with the obtained analytical solutions of a parametrically modulated Langevin equation.

R. Di Leonardo; G. Ruocco; J. Leach; M. J. Padgett; A. J. Wright; J. M. Girkin; D. R. Burnham; D. McGloin

2007-02-23T23:59:59.000Z

77

The Engineered Approach to Energy and Maintenance Effective Steam Trapping  

E-Print Network (OSTI)

The engineered approach to steam trap sizing, selection and application has proven effective in significantly reducing a plant's fuel consumption, maintenance and trap replacement costs while improving thermal efficiency and overall steam system performance. New field test procedures for measuring condensate load and steam loss have proven valuable in sizing traps and to determine which trap is the most energy efficient. The combination of using the engineered approach to steam trapping, field tests to verify trap performance and good maintenance practices has contributed to a major reduction in energy consumption of 10-50% in many industrial plants.

Krueger, R. G.; Wilt, G. W.

1980-01-01T23:59:59.000Z

78

Marginally trapped surfaces in spaces of oriented geodesics  

E-Print Network (OSTI)

We investigate the geometric properties of marginally trapped surfaces (surfaces which have null mean curvature vector) in the spaces of oriented geodesics of Euclidean 3-space and hyperbolic 3-space, endowed with their canonical neutral Kaehler structures. We prove that every rank one surface in these four manifolds is marginally trapped. In the Euclidean case we show that Lagrangian rotationally symmetric sections are marginally trapped and construct an explicit family of marginally trapped Lagrangian tori. In the hyperbolic case we explore the relationship between marginally trapped and Weingarten surfaces, and construct examples of marginally trapped surfaces with various properties.

Brendan Guilfoyle; Nikos Georgiou

2013-05-28T23:59:59.000Z

79

Engineered Products: Noncompliance Determination (2012-SE-5401) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2012-SE-5401) Noncompliance Determination (2012-SE-5401) Engineered Products: Noncompliance Determination (2012-SE-5401) July 26, 2012 DOE issued a Notice of Noncompliance Determination to Engineered Products Company (EPCO) finding that basic model 15701 of metal halide lamp fixture does not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. EPCO must immediately notify each person (or company) to whom EPCO distributed the noncompliant product that the product does not meet Federal standards. Engineered Products: Noncompliance Determination (2012-SE-5401) More Documents & Publications Engineered Products: Proposed Penalty (2012-SE-5401) Engineered Products: Order (2012-SE-5401) Teddico: Noncompliance Determination (2012-SE-5409

80

The Spindown of Bottom-Trapped Plumes  

Science Conference Proceedings (OSTI)

This note considers the decay of a bottom-trapped freshwater plume after the causative freshwater inflow has ceased. It is shown that shortly after the low-density inflow stops, the barotropic pressure field that it created radiates away and the ...

Ricardo P. Matano; Elbio D. Palma

2010-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "hor se trap" 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

Two-dimensional ion trap lattice on a microchip  

E-Print Network (OSTI)

Microfabricated ion traps are a major advancement towards scalable quantum computing with trapped ions. The development of more flexible ion trap designs, in which tailored arrays of ions are positioned in two dimensions above a microfabricated surface, would lead to applications in fields as varied as quantum simulation, metrology and atom-ion interactions. Current surface ion traps often have low trap depths and high heating rates, due to the size of the voltages that can be applied to them, limiting the fidelity of quantum gates. In this article we report on a fabrication process that allows for the application of very high voltages to microfabricated devices in general and we apply this advance to fabricate a 2D ion trap lattice on a microchip. Our scalable microfabricated architecture allows for reliable trapping of 2D ion lattices, long ion lifetimes due to the deep trapping potential, rudimentary shuttling between lattice sites and the ability to deterministically introduce defects into the ion lattice.

R. C. Sterling; H. Rattanasonti; S. Weidt; K. Lake; P. Srinivasan; S. C. Webster; M. Kraft; W. K. Hensinger

2013-02-15T23:59:59.000Z

82

Towards a cryogenic planar ion trap for Sr-88  

E-Print Network (OSTI)

This thesis describes experiments with ion traps constructed with electrodes in a single two-dimensional plane, and ion traps operated in a cryogenic environment at 77K and 4K temperatures. These two technologies address ...

Bakr, Waseem (Waseem S.)

2006-01-01T23:59:59.000Z

83

Ideal Multipole Ion Traps from Planar Ring Electrodes  

E-Print Network (OSTI)

We present designs for multipole ion traps based on a set of planar, annular, concentric electrodes which require only rf potentials to confine ions. We illustrate the desirable properties of the traps by considering a few simple cases of confined ions. We predict that mm-scale surface traps may have trap depths as high as tens of electron volts, or micromotion amplitudes in a 2-D ion crystal as low as tens of nanometers, when parameters of a magnitude common in the field are chosen. Several example traps are studied, and the scaling of those properties with voltage, frequency, and trap scale, for small numbers of ions, is derived. In addition, ions with very high charge-to-mass ratios may be confined in the trap, and species of very different charge-to-mass ratios may be simultaneously confined. Applications of these traps include quantum information science, frequency metrology, and cold ion-atom collisions.

Robert J. Clark

2012-07-25T23:59:59.000Z

84

Transport of Trapped-Ion Qubits within a Scalable Quantum ...  

Science Conference Proceedings (OSTI)

... 158 6.13 Glass vacuum envelope. . . . . ... 159 6.14 Picture of the trap inside of the glass envelope. . . . . ...

2010-12-03T23:59:59.000Z

85

High voltage gas insulated transmission line with continuous particle trapping  

DOE Patents (OSTI)

This invention provides a novel high voltage gas insulated transmission line utilizing insulating supports spaced at intervals with snap-in means for supporting a continuous trapping apparatus and said trapping apparatus having perforations and cutouts to facilitate trapping of contaminating particles and system flexibility.

Cookson, Alan H. (Pittsburgh, PA); Dale, Steinar J. (Monroeville, PA)

1983-01-01T23:59:59.000Z

86

Estimation of selenium (Se) intake from Se in serum, whole blood, toenails, or urine  

SciTech Connect

Because Se content of food varies widely, estimates of intake based on Se status are more accurate than those based on food composition tables. 77 free-living subjects from South Dakota and Wyoming, where the range of Se intake was large, provided blood, toenails, and 24-hour urines. Se intake, measured by chemical analysis of 4-8 days of duplicate-plate food composites from each subject, was estimated on the basis of the Se indices. To predict the natural logarithm of Se intake from serum Se the best fit was provided by : {minus}0.465 + 0.568{asterisk}SSe. Addition of lean body mass (LBM (kg)) and energy intake (EI (MJ)) to the model markedly improved the fit. Models based on Se in blood or urine gave slightly better estimates than those based on toenail Se. Consideration of data in addition to indices of Se status resulted in improved estimates of intake.

Longnecker, M.P.; Taylor, P.R.; Levander, O.A.; Flack, V.; Veillon, C.; McAdam, P.A.; Patterson, K.Y.; Holden, J.; Stampfer, M.J.; Morris, J.S.; Willett, W.C. (Univ. of California, Los Angeles (United States) NCI, Rockville, MD (United States) USDA, Beltsville, MD (United States) Harvard Univ., Boston, MA (United States) Univ. of Missouri, Columbia (United States))

1991-03-11T23:59:59.000Z

87

Tuning the Surface Structure and Optical Properties of CdSe Clusters Using Coordination Chemistry  

Science Conference Proceedings (OSTI)

A series of nonstoichiometric CdSe clusters with lowest energy electronic absorptions between 409 and 420 nm has been prepared from cadmium 1-naphthoate, 2-naphthoate, 4-thiomethyl-1-naphthaote, and 1-naphthalene thiolate complexes and diphenylphosphine selenide (DPPSe). Pair distribution function analysis of X-ray diffraction data, ligand exchange experiments, and NMR molecular weight analyses suggest the nanocrystal core changes minimally among these clusters despite significant changes to their absorption and luminescence spectra. Photoluminescence excitation spectra obtained at 77 K reveal an energy transfer process between the surface-trapped excited state and the naphthalene-containing ligands that leads to ligand phosphorescence. A Dexter energy transfer mechanism is proposed to explain the observation of ligand phosphorescence on excitation of the cluster. These compounds demonstrate that cluster absorption and trap luminescence can be controlled with surface coordination chemistry.

Cossairt, Brandi M.; Juhas, Pavol; Billinge, Simon J.L.; Owen, Jonathan S. (Columbia)

2012-03-26T23:59:59.000Z

88

Use of Bullet Traps and Steel Targets  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

USE OF BULLET TRAPS AND USE OF BULLET TRAPS AND STEEL TARGETS U.S. DEPARTMENT OF ENERGY Office of Health, Safety and Security AVAILABLE ONLINE AT: INITIATED BY: http://www.hss.energy.gov Office of Health, Safety and Security Notices This document is intended for the exclusive use of elements of the Department of Energy (DOE), to include the National Nuclear Security Administration, their contractors, and other government agencies/individuals authorized to use DOE facilities. DOE disclaims any and all liability for personal injury or property damage due to use of this document in any context by any organization, group, or individual, other than during official government activities. Local DOE management is responsible for the proper execution of firearms-related programs for

89

Noise-enhanced trapping in chaotic scattering  

E-Print Network (OSTI)

We show that noise enhances the trapping of trajectories in scattering systems. In fully chaotic systems, the decay rate can decrease with increasing noise due to a generic mismatch between the noiseless escape rate and the value predicted by the Liouville measure of the exit set. In Hamiltonian systems with mixed phase space we show that noise leads to a slower algebraic decay due to trajectories performing a random walk inside Kolmogorov-Arnold-Moser islands. We argue that these noise-enhanced trapping mechanisms exist in most scattering systems and are likely to be dominant for small noise intensities, which is confirmed through a detailed investigation in the Henon map. Our results can be tested in fluid experiments, affect the fractal Weyl's law of quantum systems, and modify the estimations of chemical reaction rates based on phase-space transition state theory.

Altmann, Eduardo G; 10.1103/PhysRevLett.105.244102

2010-01-01T23:59:59.000Z

90

A quantum information processor with trapped ions  

E-Print Network (OSTI)

Quantum computers hold the promise to solve certain problems exponentially faster than their classical counterparts. Trapped atomic ions are among the physical systems in which building such a computing device seems viable. In this work we present a small-scale quantum information processor based on a string of $^{40}$Ca${^+}$ ions confined in a macroscopic linear Paul trap. We review our set of operations which includes non-coherent operations allowing us to realize arbitrary Markovian processes. In order to build a larger quantum information processor it is mandatory to reduce the error rate of the available operations which is only possible if the physics of the noise processes is well understood. We identify the dominant noise sources in our system and discuss their effects on different algorithms. Finally we demonstrate how our entire set of operations can be used to facilitate the implementation of algorithms by examples of the quantum Fourier transform and the quantum order finding algorithm.

Philipp Schindler; Daniel Nigg; Thomas Monz; Julio T. Barreiro; Esteban Martinez; Shannon X. Wang; Stephan Quint; Matthias F. Brandl; Volckmar Nebendahl; Christian F. Roos; Michael Chwalla; Markus Hennrich; Rainer Blatt

2013-08-14T23:59:59.000Z

91

Iterated dynamical maps in an ion trap  

E-Print Network (OSTI)

Iterated dynamical maps offer an ideal setting to investigate quantum dynamical bifurcations and are well adapted to few-qubit quantum computer realisations. We show that a single trapped ion, subject to periodic impulsive forces, exhibits a rich structure of dynamical bifurcations derived from the Jahn-Teller Hamiltonian flow model. We show that the entanglement between the oscillator and electronic degrees of freedom reflects the underlying dynamical bifurcation in a Floquet eigenstate.

M. Duncan; J. Links; G. J. Milburn

2007-11-16T23:59:59.000Z

92

Effect of trapping in degenerate quantum plasmas  

SciTech Connect

In the present work we consider the effect of trapping as a microscopic process in a plasma consisting of quantum electrons and nondegenerate ions. The formation of solitary structures is investigated in two cases: first when the electrons are fully degenerate and second when small temperature effects are taken into account. It is seen that not only rarefactive but coupled rarefactive and compressive solitons are obtained under different temperature conditions.

Shah, H. A.; Qureshi, M. N. S. [Department of Physics, GC University, Lahore 54000 (Pakistan); Tsintsadze, N. [Department of Physics, GC University, Lahore 54000 (Pakistan); Salam Chair, GC University, Lahore 54000 (Pakistan)

2010-03-15T23:59:59.000Z

93

Demonstration of a scalable, multiplexed ion trap for quantum information processing  

Science Conference Proceedings (OSTI)

A scalable, multiplexed ion trap for quantum information processing is fabricated and tested. The trap design and fabrication process are optimized for scalability to small trap size and large numbers of interconnected traps, and for integration of control ...

D. R. Leibrandt; J. Labaziewicz; R. J. Clark; I. L. Chuang; R. J. Epstein; C. Ospelkaus; J. H. Wesenberg; J. J. Bollinger; D. Leibfried; D. J. Wineland; D. Stick; J. Sterk; C. Monroe; C.-S. Pai; Y. Low; R. Frahm; R. E. Slusher

2009-11-01T23:59:59.000Z

94

SeWave | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » SeWave Jump to: navigation, search Name SeWave Place Denmark Zip FO-110 Product Denmark-based 50:50 JV between UK's Wavegen and Faroese electricity company SEV to to design and build a tunnelled demonstration wave power plant in the Faroes Islands. References SeWave[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This company is listed in the Marine and Hydrokinetic Technology Database. This article is a stub. You can help OpenEI by expanding it. SeWave is a company located in Denmark . References ↑ "SeWave"

95

What To Do With Cold Traps and Why  

E-Print Network (OSTI)

Increased emphasis on energy management has helped sites reduce system cost through the diagnosis and repair of Leaking or Blowing steam traps (Leakage Failures). Timely maintenance response is a significant action to lower energy use and GHG emissions generated by steam production. But, what action should be taken with Cold Traps? In every steam trap survey to determine the steam trap populations current state of health, there are usually a significant amount of steam traps determined to be Cold or Low Temp (Drainage Failures or Cold Traps). It seems that site personnel commonly assign a lower response priority to these Drainage Failures traps, and sometimes actually implement a practice to intentionally convert Leaking traps into Cold Traps by closing the inlet stop valve to immediately stop energy leakage. Subsequently, they may label those traps as Valved- Out or Out of Service, but those trap stations were originally designed as needed to drain retained condensate from the system. So, the correct designation for such a trap station is Cold, regardless of the current intention. If the trap station does not drain condensate and is not hot, it is Cold. It can be astounding that many sites are not convinced of what actions or priority to take to repair Cold Traps, even while intrinsically understanding that there is something wrong with having Cold Traps that cannot drain condensate from a steam system. It often is simply because sites may not be fully aware of the potential dangers of uncorrected Cold Traps or the significant safety, reliability, and energy benefits of addressing them. Although safety is always the main priority, it cannot be overstated that there are huge reliability and energy benefits to prioritized repair of Cold Traps. Unfortunately, proactive response to repair Cold Traps in a steam system is not always achieved, often because the real benefits of such a response are not understood. Therefore, further review of WHAT TO DO ABOUT COLD TRAPSAND WHY? is warranted for safe, reliable, and energy-efficient management of the condensate discharge locations (CDLs). Several tables are provided to help sites valuate the cost impact of Cold Traps in their steam systems by using readily available historical data.

Risko, J. R.; Walter, J. P.

2012-01-01T23:59:59.000Z

96

Antihydrogen and mirror-trapped antiproton discrimination: Discriminating between antihydrogen and mirror-trapped antiprotons in a minimum-B trap  

E-Print Network (OSTI)

Recently, antihydrogen atoms were trapped at CERN in a magnetic minimum (minimum-B) trap formed by superconducting octupole and mirror magnet coils. The trapped antiatoms were detected by rapidly turning off these magnets, thereby eliminating the magnetic minimum and releasing any antiatoms contained in the trap. Once released, these antiatoms quickly hit the trap wall, whereupon the positrons and antiprotons in the antiatoms annihilated. The antiproton annihilations produce easily detected signals; we used these signals to prove that we trapped antihydrogen. However, our technique could be confounded by mirror-trapped antiprotons, which would produce seemingly-identical annihilation signals upon hitting the trap wall. In this paper, we discuss possible sources of mirror-trapped antiprotons and show that antihydrogen and antiprotons can be readily distinguished, often with the aid of applied electric fields, by analyzing the annihilation locations and times. We further discuss the general properties of antiproton and antihydrogen trajectories in this magnetic geometry, and reconstruct the antihydrogen energy distribution from the measured annihilation time history.

C. Amole; G. B. Andresen; M. D. Ashkezari; M. Baquero-Ruiz; W. Bertsche; E. Butler; C. L. Cesar; S. Chapman; M. Charlton; A. Deller; S. Eriksson; J. Fajans; T. Friesen; M. C. Fujiwara; D. R. Gill; A. Gutierrez; J. S. Hangst; W. N. Hardy; M. E. Hayden; A. J. Humphries; R. Hydomako; L. Kurchaninov; S. Jonsell; N. Madsen; S. Menary; P. Nolan; K. Olchanski; A. Olin; A. Povilus; P. Pusa; F. Robicheaux; E. Sarid; D. M. Silveira; C. So; J. W. Storey; R. I. Thompson; D. P. van der Werf; J. S. Wurtele

2012-01-18T23:59:59.000Z

97

Steam Traps-The Oft Forgotten Energy Conservation Treasure  

E-Print Network (OSTI)

In these days of high technology, the steam trap is often treated as a commodity item, forgotten by many and respected by a relative few. Yet, in many facilities, widespread undetected failure of steam traps has wasted 5-15% of a plant's total steam generation. Stopping this waste represents a major energy conservation treasure characterized by low investment and a fast payback. The proper application of steam trap technology requires the experience and judgment of a dedicated champion at each location. This paper will present an overview of a working steam trap program starting with the initial survey and loss estimates. Trap characteristics and performance by generic type will be discussed with practical examples utilized to illustrate the myths in steam trap sizing and the consequences of over-sizing. Standardization of trap inventory, training and follow-up are the other key program elements addressed.

Pychewicz, F. S.

1985-05-01T23:59:59.000Z

98

Space-charge-limited currents in an Se{sub 95}As{sub 5} chalcogenide glass-like semiconductor system containing EuF{sub 3} impurities  

Science Conference Proceedings (OSTI)

It is established that charge carrier (hole) transport in the Al-Se{sub 95}As{sub 5} Left-Pointing-Angle-Bracket EuF{sub 3} Right-Pointing-Angle-Bracket -Te structure is effected by unipolar injection currents limited by space charges with the involvement of two capture trap groups. Shallow traps corresponding to charged intrinsic defects C{sub 1}{sup -} are related to broken selenium bonds. Deep traps corresponding to charged intrinsic defects P{sub 2}{sup -} are formed by arsenic atoms with broken coordination. It is shown that the EuF{sub 3} impurity strongly affects the concentration of the capture traps, especially those localized near the Fermi level.

Isayev, A. I.; Mekhtiyeva, S. I.; Qaribova, S. N., E-mail: sqaribova@rambler.ru [Azerbaijan National Academy of Sciences, Abdullaev Institute of Physics (Azerbaijan)

2011-12-15T23:59:59.000Z

99

ZnSe light?emitting diodes  

Science Conference Proceedings (OSTI)

We report the successful fabrication of ZnSe p?n junction light?emitting diodes in which Li and Cl are used as p?type and n?type dopants

J. Ren; K. A. Bowers; B. Sneed; D. L. Dreifus; J. W. Cook Jr.; J. F. Schetzina; R. M. Kolbas

1990-01-01T23:59:59.000Z

100

Lutron Electronics: Noncompliance Determination (2012-SE-3796...  

NLE Websites -- All DOE Office Websites (Extended Search)

(2012-SE-3796) June 5, 2013 DOE issued a Notice of Noncompliance Determination to Lutron Electronics Co., Inc. finding that a variety of Class A external power supply basic models...

Note: This page contains sample records for the topic "hor se trap" 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

Exciton spectroscopy on single CdSe/ZnSe quantum dot photodiodes  

Science Conference Proceedings (OSTI)

We have investigated the properties of neutral and charged excitons in single CdSe/ZnSe QD photodiodes by @m-photoluminescence spectroscopy. By applying a bias voltage, we have been able to control the number of electrons in a single QD by shifting the ... Keywords: CdSe quantum dots, Photodiode, Stark effect

S. Michaelis de Vasconcellos; A. Pawlis; C. Arens; M. Panfilova; A. Zrenner; D. Schikora; K. Lischka

2009-02-01T23:59:59.000Z

102

Role of polycrystallinity in CdTe and CuInSe[sub 2] photovoltaic cells  

DOE Green Energy (OSTI)

The limiting role of polycrystallinity in thin-film solar calls has been reduced somewhat during the past year, and efficiencies of both CdTe and CuInSe[sub 2] cells are approaching 15%. Quantitative separation of loss mechanisms shows that individual losses, with the exception of forward recombination current, can be made comparable to their single crystal counterparts. One general manifestation of the extraneous trapping states in that the voltage of all polycrystalline thin-film cells drifts upward by 10--50 mV following the onset of illumination.

Sites, J.R. (Colorado State Univ., Fort Collins, CO (United States))

1992-11-01T23:59:59.000Z

103

Void trapping of hydrogen in sintered iron  

DOE Green Energy (OSTI)

The effect of void trapping of hydrogen in iron was studied using the gas-phase permeation technique. Iron membranes of controlled void density, varying from 92% to 98% were prepared by press and sintering of electrolytic iron powder. The presence of internal voids showed no effect on the steady state flux of hydrogen through the membrane. The effective diffusivity, obtained by the time lag method, increased with the increase of input hydrogen partial pressure. This disagreement with the prediction of the theory in literature was explained by the existence of hydrogen in both the diatomic gaseous form and as adsorbed hydrogen. This explanation was further confirmed by examining the dependence of trapped hydrogen concentration with pressure. The linear dependence of trapped hydrogen concentration in voids with external hydrogen partial pressure for samples of 96%, 94% and 92% dense were given respectively by C/sub g/ = (1.5 +- 0.2) x 10/sup 15/ P + (3.2 +- 0.5) x 10/sup 14/ atoms of H/c.c. C/sub g/ = (2.1 +- 0.6) x 10/sup 15/ P + (1.7 +- 0.5) x 10/sup 15/ atoms of H/c.c. C/sub g/ = (4.5 +- 0.3) x 10/sup 15/ P + (6.5 +- 0.2) x 10/sup 15/ atoms of H/c.c. The discrepancy between the reported values and the values predicted by theory was explained by the poisoning of some of the voids by surface oxides.

Wong, K.C.

1976-09-01T23:59:59.000Z

104

Gas turbine engines with particle traps  

DOE Patents (OSTI)

A gas turbine engine (10) incorporates a particle trap (46) that forms an entrapment region (73) in a plenum (24) which extends from within the combustor (18) to the inlet (32) of a radial-inflow turbine (52, 54). The engine (10) is thereby adapted to entrap particles that originate downstream from the compressor (14) and are otherwise propelled by combustion gas (22) into the turbine (52, 54). Carbonaceous particles that are dislodged from the inner wall (50) of the combustor (18) are incinerated within the entrapment region (73) during operation of the engine (10).

Boyd, Gary L. (Tempe, AZ); Sumner, D. Warren (Phoenix, AZ); Sheoran, Yogendra (Scottsdale, AZ); Judd, Z. Daniel (Phoenix, AZ)

1992-01-01T23:59:59.000Z

105

Trapped Quintessential Inflation from Flux Compactifications  

E-Print Network (OSTI)

Quintessential inflation is studied using a string modulus as the inflaton - quintessence field. It is assumed that the modulus crosses an enhanced symmetry point (ESP) in field space. Particle production at the ESP temporarily traps the modulus resulting in a period of inflation. After reheating, the modulus freezes due to cosmological friction at a large value, such that its scalar potential is dominated by contributions due to fluxes in the extra dimensions. The modulus remains frozen until the present, when it can become quintessence.

Konstantinos Dimopoulos

2007-02-01T23:59:59.000Z

106

Universal digital quantum simulation with trapped ions  

E-Print Network (OSTI)

A digital quantum simulator is an envisioned quantum device that can be pro- grammed to efficiently simulate any other local system. We demonstrate and investigate the digital approach to quantum simulation in a system of trapped ions. Using sequences of up to 100 gates and 6 qubits, the full time dynamics of a range of spin systems are digitally simulated. Interactions beyond those naturally present in our simulator are accurately reproduced and quantitative bounds are provided for the overall simulation quality. Our results demon- strate the key principles of digital quantum simulation and provide evidence that the level of control required for a full-scale device is within reach.

B. P. Lanyon; C. Hempel; D. Nigg; M. Mller; R. Gerritsma; F. Zhringer; P. Schindler; J. T. Barreiro; M. Rambach; G. Kirchmair; M. Hennrich; P. Zoller; R. Blatt; C. F. Roos

2011-09-07T23:59:59.000Z

107

Impurity beam-trapping instability in tokamaks  

SciTech Connect

The sensitivity of neutron energy production to the impurity trapping of injected neutral beams is considered. This process is affected by inherent low-Z contamination of the tritium pre-heat plasma, by the species composition of the neutral beam, and by the entrance angle of the beam. The sensitivities of the process to these variables, and to the variation of wall material are compared. One finds that successful use of a low-Z, low-sputtering material can appreciably lengthen the useful pulse length. (auth)

Hogan, J.T.; Howe, H.C.

1976-01-01T23:59:59.000Z

108

New nano trap protects environment | Argonne National Laboratory  

NLE Websites -- All DOE Office Websites (Extended Search)

New nano trap protects environment New nano trap protects environment By Tona Kunz * October 31, 2012 Tweet EmailPrint This story was originally published in volume 10, number 5 of Innovation magazine. A new type of nanoscale molecular trap makes it possible for industry to store large amounts of hydrogen in small fuel cells or capture, compact and remove volatile radioactive gas from spent nuclear fuel in an affordable, easily commercialized way. The ability to adjust the size of the trap openings to select for specific molecules or to alter how molecules are released at industrially accessible pressures makes the trap uniquely versatile. The trap is constructed of commercially available material and made possible through collaborative work at Argonne and Sandia national laboratories. "This introduces a new class of materials to nuclear waste remediation,"

109

Volatiles trapped in coals: Second quarterly report  

SciTech Connect

We have been able to collect and characterize volatiles that are evolved in the grinding of coal. We have developed a very sensitive method for collecting volatiles evolved in grinding. A sealed, gas tight, grinding apparatus has been built. With this system we can collect volatiles freed from the coal matrix during grinding. To do this a 125 cm/sup 3/ sample of coal is placed in to a 1 liter sealable ball mill jar. The jar is evacuated and the coal ground for 1 hr. The jar is then removed from the ball mill and evacuated into our sample collection system. Gas from the jar is pumped through two stages of dust filtering into a liquid nitrogen cold trap charged with 5 ml of methylene chloride. After warming the trap is shaken so that any gas from the sample mixes with and dissolves in the methylene chloride. One microliter samples of the methylene chloride are injected into a Finnegan GCMS. Preliminary analysis of mass spectra from peaks in the RIC show the presence of hydrocarbons. It was possible to definitively identify cyclohexene. The total amount of hydrocarbons seen is low. The attached figure is the mass spectra of the cyclohexene that was collected from the ground coal. 1 fig.

Sutter, J.R.; Halpern, J.B.

1988-01-01T23:59:59.000Z

110

Energy trapping from Hagedorn densities of states  

E-Print Network (OSTI)

In this note, we construct simple stochastic toy models for holographic gauge theories in which distributions of energy on a collection of sites evolve by a master equation with some specified transition rates. We build in only energy conservation, locality, and the standard thermodynamic requirement that all states with a given energy are equally likely in equilibrium. In these models, we investigate the qualitative behavior of the dynamics of the energy distributions for different choices of the density of states for the individual sites. For typical field theory densities of states (\\log(\\rho(E)) ~ E^{\\alphaenergy spread out relatively quickly. For large N gauge theories with gravitational duals, the density of states for a finite volume of field theory degrees of freedom typically includes a Hagedorn regime (\\log(\\rho(E)) ~ E). We find that this gives rise to a trapping of energy in subsets of degrees of freedom for parametrically long time scales before the energy leaks away. We speculate that this Hagedorn trapping may be part of a holographic explanation for long-lived gravitational bound states (black holes) in gravitational theories.

Connor Behan; Klaus Larjo; Nima Lashkari; Brian Swingle; Mark Van Raamsdonk

2013-04-26T23:59:59.000Z

111

Geochemistry of the Yutangba Se deposit in western Hubei, China  

Science Conference Proceedings (OSTI)

In the Se ores and abandoned stone coal pile at the Yutangba Se deposit there ... of Se minerals due to secondary enrichment of selenium in the stone coal...

112

Gas insulated transmission line having tapered particle trapping ring  

DOE Patents (OSTI)

A gas-insulated transmission line includes an outer sheath, an inner conductor, insulating supports and an insulating gas. A particle-trapping ring is secured to each insulating support, and it is comprised of a central portion and two tapered end portions. The ends of the particle trapping ring have a smaller diameter than the central portion of the ring, so as to enable the use of the particle trapping ring in a curved transmission line.

Cookson, Alan H. (Pittsburgh, PA)

1982-01-01T23:59:59.000Z

113

I2SE | Open Energy Information  

Open Energy Info (EERE)

I2SE I2SE Jump to: navigation, search Name I2SE Place Leipzig, Germany Zip 4103 Sector Efficiency Product IT company providing solutions for energy efficiency and data transmission. Coordinates 51.3452°, 12.38594° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":51.3452,"lon":12.38594,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

114

Goodman Manufacturing: Noncompliance Determination (2011-SE-4301) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2011-SE-4301) Noncompliance Determination (2011-SE-4301) Goodman Manufacturing: Noncompliance Determination (2011-SE-4301) October 17, 2011 DOE issued a Notice of Noncompliance Determination to Goodman Manufacturing finding that model CPC180XXX3BXXXAA (CPC180*) of commercial package air conditioner does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing . Goodman must immediately notify each person (or company) to whom Goodmany distributed the noncompliant products that the product does not meet Federal standards. In addition, Goodman must provide to DOE documents and records showing the number of units Goodman distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil

115

Summit Manufacturing: Noncompliance Determination (2010-SE-0303) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Summit Manufacturing: Noncompliance Determination (2010-SE-0303) Summit Manufacturing: Noncompliance Determination (2010-SE-0303) Summit Manufacturing: Noncompliance Determination (2010-SE-0303) May 28, 2010 DOE issued a Notice of Noncompliance Determination to Summit Manufacturing, Inc. finding that 4SHP13LE136P + 15001+CA042A964+TDR basic model, a split-system air conditioning heat pump with a heat pump coil, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. Summit must immediately notify each person (or company) to whom Summit distributed the noncompliant products that the product does not meet Federal standards. In addition, Summit must provide to DOE documents and records showing the number of units Summit distributed and to whom. The manufacturer and/or

116

Trap-depth determination from residual gas collisions  

SciTech Connect

We present a method for determining the depth of an atomic or molecular trap of any type. This method relies on a measurement of the trap loss rate induced by collisions with background gas particles. Given a fixed gas composition, the loss rate uniquely determines the trap depth. Because of the ''soft'' long-range nature of the van der Waals interaction, these collisions transfer kinetic energy to trapped particles across a broad range of energy scales, from room temperature to the microkelvin energy scale. The resulting loss rate therefore exhibits a significant variation over an enormous range of trap depths, making this technique a powerful diagnostic with a large dynamic range. We present trap depth measurements of a Rb magneto-optical trap using this method and a different technique that relies on measurements of loss rates during optical excitation of colliding atoms to a repulsive molecular state. The main advantage of the method presented here is its large dynamic range and applicability to traps of any type requiring only knowledge of the background gas density and the interaction potential between the trapped and background gas particles.

Van Dongen, J.; Zhu, C.; Clement, D.; Dufour, G.; Madison, K. W. [Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia, V6T 1Z1 (Canada); Booth, J. L. [Physics Department, British Columbia Institute of Technology, 3700 Willingdon Avenue, Burnaby, British Columbia, V5G 3H2 (Canada)

2011-08-15T23:59:59.000Z

117

How Algae Use a "Sulfate Trap" to Selectively Biomineralize Strontium...  

NLE Websites -- All DOE Office Websites (Extended Search)

| 2003 | 2002 2001 | 2000 | 1998 | Subscribe to APS Science Highlights rss feed How Algae Use a "Sulfate Trap" to Selectively Biomineralize Strontium OCTOBER 20, 2011 Bookmark...

118

Bait formulations and longevity of navel orangeworm egg traps tested  

E-Print Network (OSTI)

there were 1% or 3% crude almond oil received more eggshaving no letters crude almond oil or traps baited with inone standard error. crude almond oil received significantly

Kuenen, L.P.S. Bas; Bentley, Walt; Rowe, Heather; Ribeiro, Brian

2008-01-01T23:59:59.000Z

119

`Trapped' Ions Provide First View of Light Property  

Science Conference Proceedings (OSTI)

... PHYSICS `Trapped' Ions Provide First View of Light Property. ... Quantum theory states that light can act either as a wave or as a particle. ...

120

November 18, 2010: Antimatter Trapped and Stored | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

and Stored November 18, 2010 The Department's Lawrence Berkeley National Laboratory (LBNL) announces that atoms of antimatter have been trapped and stored for the first time in...

Note: This page contains sample records for the topic "hor se trap" 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

Onset of Fermi Degeneracy in a Trapped Atomic Gas  

Science Conference Proceedings (OSTI)

... in the total energy of the ultra- cold, trapped ... of charge e onto a cryogenic capacitor C, and ... standards are known as calculable capacitors and rely ...

2010-07-12T23:59:59.000Z

122

Bon MOT: Innovative Atom Trap Catches Highly Magnetic ...  

Science Conference Proceedings (OSTI)

... of a cloud of erbium atoms trapped and cooled and a ... all the while extracting energy and cooling them ... only a single laser and can cool erbium atoms ...

2011-07-18T23:59:59.000Z

123

Possible mechanism for enhancing the trapping and cooling of antihydrogen  

SciTech Connect

We propose a usage of microwave radiation in a magnetic trap for improving the cooling and trapping of cold antihydrogen atoms which are initially produced in high magnetic moment states. Inducing transitions toward lower magnetic moments near the turning points of the atom in the trap, followed by spontaneous emission, should enhance the number of trappable atoms. We present results of simulations based on a typical experimental condition of the antihydrogen experiments at CERN. This technique should also be applicable to other trapped high magnetic moment Rydberg atoms.

Cesar, C. L.; Zagury, N. [Instituto de Fisica, Universidade Federal do Rio de Janeiro, 21941-972 Rio de Janeiro, RJ (Brazil); Robicheaux, F. [Department of Physics, Auburn University, Auburn, Alabama 36849 (United States)

2009-10-15T23:59:59.000Z

124

Controlled Kinetic Energy Ion Source for Miniature Ion Trap ...  

with electronic signal sources coupled to the electrodes. The ion trap can be machined with conventional materials and methods and has demonstrated

125

Electron traps in organic light-emitting diodes  

Science Conference Proceedings (OSTI)

This work presents the effects of electron traps in organic light-emitting diodes using a model which includes charge injection

Min-Jan Tsai; Hsin-Fei Meng

2005-01-01T23:59:59.000Z

126

NIST Racetrack Ion Trap is a Contender in Quantum ...  

Science Conference Proceedings (OSTI)

... ion trap under development as possible hardware for a future quantum computer. ... loading of 10 magnesium ions at once and transport of an ion ...

2011-10-26T23:59:59.000Z

127

Trapping and Measuring Charged Particles in Liquids - Energy ...  

Genome sequencing especially benefits from the nanoscale approach. Description. The trap is a three-layer, three-dimensional crossing metal/insulator ...

128

Josephson oscillations between exciton condensates in electrostatic traps  

SciTech Connect

Technological advances allow for tunable lateral confinement of cold dipolar excitons in coupled quantum wells. We consider theoretically the Josephson effect between exciton condensates in two traps separated by a weak link. The flow of the exciton supercurrent is driven by the dipole-energy difference between the traps. The Josephson oscillations may be observed after ensemble average of the time correlation of photons separately emitted from the two traps. The fringe visibility is controlled by the trap coupling and is robust against quantum and thermal fluctuations.

Rontani, Massimo [CNR-INFM Research Center on nanoStructures and bioSystems at Surfaces (S3), Via Campi 213/A, 41125 Modena (Italy); Sham, L. J. [Department of Physics, University of California San Diego, La Jolla, California 92093-0319 (United States)

2009-08-15T23:59:59.000Z

129

Bait formulations and longevity of navel orangeworm egg traps tested  

E-Print Network (OSTI)

traps tested by L.P.S. (Bas) Kuenen, Walt Bentley, Heatherfor at least 10 weeks. L.P.S. (Bas) Kuenen is Research

Kuenen, L.P.S. Bas; Bentley, Walt; Rowe, Heather; Ribeiro, Brian

2008-01-01T23:59:59.000Z

130

Tellurium Inclusions and Carrier Trapping Times in Detector Grade ...  

Science Conference Proceedings (OSTI)

Spatial mapping of carrier trapping times and defect densities in CZT was performed to determine the relationship between defect density and electronic decay.

131

The angular momentum of a magnetically trapped atomic condensate  

E-Print Network (OSTI)

For an atomic condensate in an axially symmetric magnetic trap, the sum of the axial components of the orbital angular momentum and the hyperfine spin is conserved. Inside an Ioffe-Pritchard trap (IPT) whose magnetic field (B-field) is not axially symmetric, the difference of the two becomes surprisingly conserved. In this paper we investigate the relationship between the values of the sum/difference angular momentums for an atomic condensate inside a magnetic trap and the associated gauge potential induced by the adiabatic approximation. Our result provides significant new insight into the vorticity of magnetically trapped atomic quantum gases.

P. Zhang; H. H. Jen; C. P. Sun; L. You

2006-11-14T23:59:59.000Z

132

KTH Mechanics SE-100 44 Stockholm, Sweden  

E-Print Network (OSTI)

KTH Mechanics SE-100 44 Stockholm, Sweden Activity Report 2006 Contents 1. Introduction 2. 3 Publications and conference presentations during 2006 5. 4 Seminars at Mechanics, KTH 1 #12 of Mechanics, KTH during the year of 2006. More information may be found at the department web site http

Haviland, David

133

KTH Mechanics SE-100 44 Stockholm, Sweden  

E-Print Network (OSTI)

KTH Mechanics SE-100 44 Stockholm, Sweden Activity Report 2005 Contents 1. Introduction 2. 3 Publications and conference presentations during 2005 5. 4 Seminars at Mechanics, KTH 1 #12 of Mechanics, KTH during the year of 2005. More information may be found at the department web site http

Haviland, David

134

KTH Mechanics SE-100 44 Stockholm, Sweden  

E-Print Network (OSTI)

KTH Mechanics SE-100 44 Stockholm, Sweden Activity Report 2009 Contents 1. Introduction 2 a short overview of the structure and activities at the depart- ment of Mechanics, KTH during the year courses in mechanics, fluid mechanics and structural mechanics given for students and programmes from

Haviland, David

135

Bright CdSe quantum dot inserted in single ZnSe nanowires  

Science Conference Proceedings (OSTI)

We report the evidence of CdSe quantum dot (QD) insertion in single defect-free ZnSe nanowire. These nanowires have been grown by molecular beam epitaxy in vapour-liquid-solid growth mode catalysed with gold particles. We developed a two-step process ... Keywords: PL, Antibunching, CdSe, Correlation measurement, Micro photoluminescence, Polarisation, Single NW, Single QD, Single nanowire, Single nanowire heterostructures, Single quantum dot, TRPL, Time-resolved photoluminescence, Two-step process, ZnSe

A. Tribu; G. Sallen; T. Aichele; C. Bougerol; R. Andr; J. P. Poizat; S. Tatarenko; K. Kheng

2009-02-01T23:59:59.000Z

136

Selection, Sizing, and Testing of Stream Traps in Commercial Buildings  

E-Print Network (OSTI)

For maximum effectiveness in steam systems, steam traps should have operating characteristics which closely match the requirements of the applications for which they are used. A trap which holds back condensate until it is subcooled and some of the sensible heat has been utilized is unsuitable where the need is to get maximum output from an exchanger by discharging condensate as soon as it forms. Equally, a trap discharging condensate at steam temperature can exacerbate flash steam problems in cases where surplus heat exchange area exists and a subcooling trap might be more suitable. In all cases, undersized traps simply cannot drain condensate from the steam equipment at the required rate, while oversized traps which cost more will usually wear faster and begin leaking expensive steam. This emphasizes the need for carefully selecting trap sizes that are properly engineered for maximum system efficiency. And, of course, the ability of a trap to cope with varying loads and to discharge noncondensible gases is often important. The recommended procedure is to first select the trap type which has performance capabilities that satisfy specific application needs, and then to choose a size which handles the condensate load without any unnecessary excess capacity. The Selection Guide, Table 1, is not comprehensive but helps in many applications where no unusual operating conditions or severe corrosion problems exist. Choosing the correct trap size then implies estimating the steam consumption rate, which of course equals the condensate load. Sometimes the load has already been measured, or the rated output of the steam equipment is known or can be obtained from the original manufacturer. In other cases, an estimate must be made and a Table o f Load Formulas will help although it, too, cannot be comprehensive. After making the best possible estimate of the load, a safety factor is applied. This allows for any inaccuracies in the estimating, for increased condensation rates at start-up, and for lower than anticipated pressure differentials across the trap.

Armer, A.; Risko, J. R.

1984-01-01T23:59:59.000Z

137

Debris trap in a turbine cooling system  

SciTech Connect

In a turbine having a rotor and a plurality of stages, each stage comprising a row of buckets mounted on the rotor for rotation therewith; and wherein the buckets of at least one of the stages are cooled by steam, the improvement comprising at least one axially extending cooling steam supply conduit communicating with an at least partially annular steam supply manifold; one or more axially extending cooling steam feed tubes connected to the manifold at a location radially outwardly of the cooling steam supply conduit, the feed tubes arranged to supply cooling steam to the buckets of at least one of the plurality of stages; the manifold extending radially beyond the feed tubes to thereby create a debris trap region for collecting debris under centrifugal loading caused by rotation of the rotor.

Wilson, Ian David (Clifton Park, NY)

2002-01-01T23:59:59.000Z

138

Can aerosols be trapped in open flows?  

E-Print Network (OSTI)

The fate of aerosols in open flows is relevant in a variety of physical contexts. Previous results are consistent with the assumption that such finite-size particles always escape in open chaotic advection. Here we show that a different behavior is possible. We analyze the dynamics of aerosols both in the absence and presence of gravitational effects, and both when the dynamics of the fluid particles is hyperbolic and nonhyperbolic. Permanent trapping of aerosols much heavier than the advecting fluid is shown to occur in all these cases. This phenomenon is determined by the occurrence of multiple vortices in the flow and is predicted to happen for realistic particle-fluid density ratios.

Rafael D. Vilela; Adilson E. Motter

2007-06-10T23:59:59.000Z

139

Hydrobiologia vol. 65, I, pag. 65-68, 1979 A SIZE SELECTIVE UNDERWATER LIGHT TRAP  

E-Print Network (OSTI)

Hydrobiologia vol. 65, I, pag. 65-68, 1979 A SIZE SELECTIVE UNDERWATER LIGHT TRAP R. B. AIKEN underwater light trap isdescribed. Trap records indicate that the trap iseffective in taking a wide variety. (1955) described the construction and operation of an underwater light trap. Their records indi- cate

Aiken, Ron

140

Effective Steam Trap Selection/Maintenance - Its Payback  

E-Print Network (OSTI)

In oil refineries and petrochemical plants large number of steam traps are used to discharge condensate from steam mains, tracers and process equipment. Early efforts on steam traps focused almost exclusively on their selection and sizing, and it was not until the 1973 oil embargo that a need for regular maintenance became recognized. Although relatively small pieces of equipment, traps are responsible for large quantities of steam losses, decreased equipment efficiency and high maintenance costs; e.g., a steam trap leaking 100 psig steam through a 1/8 inch orifice costs at least $2k/yr if steam is valued at $5/k lb. Typically, a steam trap survey identifies 20-60% of traps malfunctioning. Therefore, establishing an effective steam trap selection/maintenance program is not simple but can be extremely profitable. This paper will show how a successful checking/maintenance program can result in high returns by using a case study at an Exxon plant. The example also shows how a central engineering organization can interact with plant technicians/ maintenance personnel to help implement an effective steam trap maintenance program at competitive costs and high returns.

Garcia, E.

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hor se trap" 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

Phase transition on CdSe thin films by changing the volume concentration of Se  

Science Conference Proceedings (OSTI)

In this work CdSe thin films were grown by chemical bath deposition (CBD)6 onto glass substrate with approximately 2000 thickness. The samples have been prepared by changing the volume concentration of the solution in the range of 5-45 ... Keywords: CdSe, thin films, chemical bath, phase transitions, semiconductors

M. Rubn; J. I. Cortez; H. Jurez; E. Rosendo; T. Daz; G. Garca Salgado; I. Villaverde; R. Lozada-Morales; O. Portillo-Moreno; O. Zelaya-Ngel

2007-07-01T23:59:59.000Z

142

Energy Efficient Steam Trapping of Trace Heating Systems  

E-Print Network (OSTI)

Since as many as 40-60% of a plant's steam traps may be used on steam tracer lines, it is essential to select the correct, properly sized 'traps'; to optimize the efficient removal of condensate while providing maximum heat transfer to maintain desired product temperatures and greatly reduce steam losses. Factors related to achieving uniform product temperatures and maximum heat transfer rates and energy efficiency are: 1.Types and Methods used for Steam Tracing; 2. Systematic heat balance required to achieve economic tracer lengths; 3. Maximum allowable trapping distance for specific applications 4.Data important to determine condensate loads; 5. Trap selection, sizing, good installation practices, and proper maintenance. Using an engineered approach to steam trapping of trace heating systems have resulted in stable tracer line temperatures while reducing steam consumption 10-50% with minimum maintenance.

Krueger, R. G.; Wilt, G. W.

1981-01-01T23:59:59.000Z

143

Properties of Trapped Electron Bunches in a Plasma Wakefield Accelerator  

Science Conference Proceedings (OSTI)

Plasma-based accelerators use the propagation of a drive bunch through plasma to create large electric fields. Recent plasma wakefield accelerator (PWFA) experiments, carried out at the Stanford Linear Accelerator Center (SLAC), successfully doubled the energy for some of the 42 GeV drive bunch electrons in less than a meter; this feat would have required 3 km in the SLAC linac. This dissertation covers one phenomenon associated with the PWFA, electron trapping. Recently it was shown that PWFAs, operated in the nonlinear bubble regime, can trap electrons that are released by ionization inside the plasma wake and accelerate them to high energies. These trapped electrons occupy and can degrade the accelerating portion of the plasma wake, so it is important to understand their origins and how to remove them. Here, the onset of electron trapping is connected to the drive bunch properties. Additionally, the trapped electron bunches are observed with normalized transverse emittance divided by peak current, {epsilon}{sub N,x}/I{sub t}, below the level of 0.2 {micro}m/kA. A theoretical model of the trapped electron emittance, developed here, indicates that the emittance scales inversely with the square root of the plasma density in the non-linear 'bubble' regime of the PWFA. This model and simulations indicate that the observed values of {epsilon}{sub N,x}/I{sub t} result from multi-GeV trapped electron bunches with emittances of a few {micro}m and multi-kA peak currents. These properties make the trapped electrons a possible particle source for next generation light sources. This dissertation is organized as follows. The first chapter is an overview of the PWFA, which includes a review of the accelerating and focusing fields and a survey of the remaining issues for a plasma-based particle collider. Then, the second chapter examines the physics of electron trapping in the PWFA. The third chapter uses theory and simulations to analyze the properties of the trapped electron bunches. Chapters four and five present the experimental diagnostics and measurements for the trapped electrons. Next, the sixth chapter introduces suggestions for future trapped electron experiments. Then, Chapter seven contains the conclusions. In addition, there is an appendix chapter that covers a topic which is extraneous to electron trapping, but relevant to the PWFA. This chapter explores the feasibility of one idea for the production of a hollow channel plasma, which if produced could solve some of the remaining issues for a plasma-based collider.

Kirby, Neil; /SLAC

2009-10-30T23:59:59.000Z

144

Measurements of electric field noise and light-induced charging in cryogenic surface electrode ion traps  

E-Print Network (OSTI)

Ion traps provide an excellent tool for controlling and observing the state of a single trapped ion. For this reason, ion traps have been proposed as a possible system for large-scale quantum computation. However, many ...

Lachenmyer, Nathan S. (Nathan Scott)

2010-01-01T23:59:59.000Z

145

Using malaise traps to sample ground beetles (Coleoptera: Carabidae).  

SciTech Connect

Pitfall traps provide an easy and inexpensive way to sample ground-dwelling arthropods (Spence and Niemela 1994; Spence et al. 1997; Abildsnes and Tommeras 2000) and have been used exclusively in many studies of the abundance and diversity of ground beetles (Coleoptera: Carabidae). Despite the popularity of this trapping technique, pitfall traps have many disadvantages. For example, they often fail to collect both small (Spence and Niemela 1994) and ?¢????trap-shy?¢??? species (Benest 1989), eventually deplete the local carabid population (Digweed et al. 1995), require a species to be ground-dwelling in order to be captured (Liebherr and Mahar 1979), and produce different results depending on trap diameter and material, type of preservative used, and trap placement (Greenslade 1964; Luff 1975; Work et al. 2002). Further complications arise from seasonal patterns of movement among the beetles themselves (Maelfait and Desender 1990), as well as numerous climatic factors, differences in plant cover, and variable surface conditions (Adis 1979). Because of these limitations, pitfall trap data give an incomplete picture of the carabid community and should be interpreted carefully. Additional methods, such as use of Berlese funnels and litter washing (Spence and Niemela 1994), collection from lights (Usis and MacLean 1998), and deployment of flight intercept devices (Liebherr and Mahar 1979; Paarmann and Stork 1987), should be incorporated in surveys to better ascertain the species composition and relative numbers of ground beetles. Flight intercept devices, like pitfall traps, have the advantage of being easy to use and replicate, but their value to carabid surveys is largely unknown. Here we demonstrate the effectiveness of Malaise traps for sampling ground beetles in a bottomland hardwood forest.

Ulyshen, Michael D., James L. Hanula, and Scott Horn

2005-01-01T23:59:59.000Z

146

Progress towards high precision measurements on ultracold metastable hydrogen and trapping deuterium  

E-Print Network (OSTI)

(cont.) not achieve deuterium trapping through helium-surface cooling. It is proposed that buffer gas loading can be used to cryogenically cool and trap deuterium.

Steinberger, Julia K., 1974-

2004-01-01T23:59:59.000Z

147

Double-well magnetic trap for Bose-Einstein condensates  

E-Print Network (OSTI)

We present a magnetic trapping scheme for neutral atoms based on a hybrid of Ioffe-Pritchard and Time-averaged Orbiting Potential traps. The resulting double-well magnetic potential has readily controllable barrier height and well separation. This offers a new tool for studying the behavior of Bose condensates in double-well potentials, including atom interferometry and Josephson tunneling. We formulate a description for the potential of this magnetic trap and discuss practical issues such as loading with atoms, evaporative cooling and manipulating the potential.

N. R. Thomas; C. J. Foot; A. C. Wilson

2001-08-10T23:59:59.000Z

148

Steam Trap Testing and Evaluation: An Actual Plant Case Study  

E-Print Network (OSTI)

With rising steam costs and a high failure rate on the Joliet Plants standard steam trap, a testing and evaluation program was begun to find a steam trap that would work at Olin-Joliet. The basis was to conduct the test on the actual process equipment and that a minimum life be achieved. This paper deals with the history of the steam system/condensate systems, the setting up of the testing procedure, which traps were and were not tested and the results of the testing program to date.

Feldman, A. L.

1981-01-01T23:59:59.000Z

149

Photoconductivity and luminescence of CuInSe{sub 2} single crystals at a high level of optical excitation  

Science Conference Proceedings (OSTI)

The luminance-current and spectral characteristics of photoluminescence of the CuInSe{sub 2} single crystals are studied. The superlinear portion of the excitation-intensity dependence of photoconductivity at low excitation intensities in compensated p-CuInSe{sub 2} crystals is explained on the basis of a recombination model. The emission band that peaked at 0.98 eV in the n-CuInSe{sub 2} photoluminescence spectrum corresponds to radiative recombination of electrons at the donor level with a depth of 0.04 eV. The maximum in the band intensity corresponds to the energy gap between the trap level and the valence band.

Guseinov, A. G.; Salmanov, V. M.; Mamedov, R. M. [Baku State University (Azerbaijan)], E-mail: rovshan63@rambler.ru

2006-04-15T23:59:59.000Z

150

Whirlpool: Data Request (2010-SE-0103) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Data Request (2010-SE-0103) Whirlpool: Data Request (2010-SE-0103) April 5, 2010 DOE received information that a model of refrigerator-freezer manufactured by Whirlpool Corporation...

151

SeQuential Pacific Biodiesel LLC | Open Energy Information  

Open Energy Info (EERE)

Pacific Biodiesel LLC Jump to: navigation, search Name SeQuential-Pacific Biodiesel LLC Place Oregon Sector Biofuels Product JV between SeQuential Biofuels, Pacific Biodiesel, and...

152

Fuel traps: mapping stability via water association.  

DOE Green Energy (OSTI)

Hydrogen storage is a key enabling technology required for attaining a hydrogen-based economy. Fundamental research can reveal the underlying principles controlling hydrogen uptake and release by storage materials, and also aid in characterizing and designing novel storage materials. New ideas for hydrogen storage materials come from exploiting the properties of hydrophobic hydration, which refers to water s ability to stabilize, by its mode of association, specific structures under specific conditions. Although hydrogen was always considered too small to support the formation of solid clathrate hydrate structures, exciting new experiments show that water traps hydrogen molecules at conditions of low temperatures and moderate pressures. Hydrogen release is accomplished by simple warming. While these experiments lend credibility to the idea that water could form an environmentally attractive alternative storage compound for hydrogen fuel, which would advance our nation s goals of attaining a hydrogen-based economy, much work is yet required to understand and realize the full potential of clathrate hydrates for hydrogen storage. Here we undertake theoretical studies of hydrogen in water to establish a firm foundation for predictive work on clathrate hydrate H{sub 2} storage capabilities. Using molecular simulation and statistical mechanical theories based in part on quantum mechanical descriptions of molecular interactions, we characterize the interactions between hydrogen and liquid water in terms of structural and thermodynamic properties. In the process we validate classical force field models of hydrogen in water and discover new features of hydrophobic hydration that impact problems in both energy technology and biology. Finally, we predict hydrogen occupancy in the small and large cages of hydrogen clathrate hydrates, a property unresolved by previous experimental and theoretical work.

Rempe, Susan L.; Clawson, Jacalyn S.; Greathouse, Jeffery A.; Alam, Todd M; Leung, Kevin; Varma, Sameer; Sabo, Dubravko; Martin, Marcus Gary; Cygan, Randall Timothy

2007-03-01T23:59:59.000Z

153

Purple traps yield Reservation's first detection of Emerald Ash Borer  

NLE Websites -- All DOE Office Websites (Extended Search)

traps yield Reservation's first detection of Emerald Ash Borer traps yield Reservation's first detection of Emerald Ash Borer The question of whether or not DOE's forests are infested with Emerald Ash Borer (EAB) has been answered. On May 10, a trap on Highway 95 at the Highway 58 interchange produced the first instance of the destructive non-native insect in Roane County. Five days later, a second trap on Bethel Valley Road near the East Portal turned up the first capture in Anderson County. "Unfortunately, these finds signal the beginning of a decline of ash species throughout the reservation" according to Greg Byrd, forester with the ORNL Natural Resources Program. "Dieback will become more prominent as the insect populations expand. Native ash trees have little defense against this pest, which was

154

Novel trapping techniques for shaping Bose-Einstein condensates  

E-Print Network (OSTI)

A combination of radio frequency radiation and magnetic field gradients was used to trap atoms in dressed states. In a magnetic field with a quadrupole minimum. RF fields resonant with the (I F. m)) 11. -1) -- 1, 0) ...

Boyd, Micah (Micah Scott)

2007-01-01T23:59:59.000Z

155

A Model for Vortex-Trapped Internal Waves  

Science Conference Proceedings (OSTI)

Regions of negative vorticity are observed to trap and amplify near-inertial internal waves, which are sources of turbulent mixing 10100 times higher than typically found in the stratified ocean interior. Because these regions are of finite ...

Eric Kunze; Emmanuel Boss

1998-10-01T23:59:59.000Z

156

On the Damping of Free Coastal-Trapped Waves  

Science Conference Proceedings (OSTI)

A perturbative method is presented for estimating the decay time of subinertial coastal-trapped waves under a wide range of conditions where damping is relatively weak. Bottom friction is sometimes much more important than long-wave results ...

K. H. Brink

1990-08-01T23:59:59.000Z

157

Electron source for a mini ion trap mass spectrometer  

DOE Patents (OSTI)

An ion trap is described which operates in the regime between research ion traps which can detect ions with a mass resolution of better than 1:10{sup 9} and commercial mass spectrometers requiring 10{sup 4} ions with resolutions of a few hundred. The power consumption is kept to a minimum by the use of permanent magnets and a novel electron gun design. By Fourier analyzing the ion cyclotron resonance signals induced in the trap electrodes, a complete mass spectra in a single combined structure can be detected. An attribute of the ion trap mass spectrometer is that overall system size is drastically reduced due to combining a unique electron source and mass analyzer/detector in a single device. This enables portable low power mass spectrometers for the detection of environmental pollutants or illicit substances, as well as sensors for on board diagnostics to monitor engine performance or for active feedback in any process involving exhausting waste products. 10 figs.

Dietrich, D.D.; Keville, R.F.

1995-12-19T23:59:59.000Z

158

Trapped Ion Imaging with a High Numerical Aperture Spherical Mirror  

E-Print Network (OSTI)

Efficient collection and analysis of trapped ion qubit fluorescence is essential for robust qubit state detection in trapped ion quantum computing schemes. We discuss simple techniques of improving photon collection efficiency using high numerical aperture (N.A.) reflective optics. To test these techniques we placed a spherical mirror with an effective N.A. of about 0.9 inside a vacuum chamber in the vicinity of a linear Paul trap. We demonstrate stable and reliable trapping of single barium ions, in excellent agreement with our simulations of the electric field in this setup. While a large N.A. spherical mirror introduces significant spherical aberration, the ion image quality can be greatly improved by a specially designed aspheric corrector lens located outside the vacuum system. Our simulations show that the spherical mirror/corrector design is an easy and cost-effective way to achieve high photon collection rates when compared to a more sophisticated parabolic mirror setup.

G Shu; M R Dietrich; N Kurz; B B Blinov

2009-01-29T23:59:59.000Z

159

Trapped Ion Imaging with a High Numerical Aperture Spherical Mirror  

E-Print Network (OSTI)

Efficient collection and analysis of trapped ion qubit fluorescence is essential for robust qubit state detection in trapped ion quantum computing schemes. We discuss simple techniques of improving photon collection efficiency using high numerical aperture (N.A.) reflective optics. To test these techniques we placed a spherical mirror with an effective N.A. of about 0.9 inside a vacuum chamber in the vicinity of a linear Paul trap. We demonstrate stable and reliable trapping of single barium ions, in excellent agreement with our simulations of the electric field in this setup. While a large N.A. spherical mirror introduces significant spherical aberration, the ion image quality can be greatly improved by a specially designed aspheric corrector lens located outside the vacuum system. Our simulations show that the spherical mirror/corrector design is an easy and cost-effective way to achieve high photon collection rates when compared to a more sophisticated parabolic mirror setup.

Shu, G; Kurz, N; Blinov, B B

2009-01-01T23:59:59.000Z

160

Energy Trapping near the Equator in a Numerical Ocean Model  

Science Conference Proceedings (OSTI)

The trapped equatorial standing modes described theoretically by Gent (1979) are reproduced in a single vertical-mode numerical ocean model. integrations are carried out in domains whose longitudinal extents are characteristic of the widths of ...

Peter R. Gent; Albert J. Semtner Jr.

1980-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "hor se trap" 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

Trapped Lee Wave Interference in the Presence of Surface Friction  

Science Conference Proceedings (OSTI)

Trapped lee wave interference over double bell-shaped obstacles in the presence of surface friction is examined. Idealized high-resolution numerical experiments with the nonhydrostatic Coupled OceanAtmosphere Mesoscale Prediction System (COAMPS) ...

Ivana Stiperski; Vanda Grubii?

2011-04-01T23:59:59.000Z

162

Gravity-induced resonances in a rotating trap  

E-Print Network (OSTI)

It is shown that in an anisotropic harmonic trap that rotates with the properly chosen rotation rate, the force of gravity leads to a resonant behavior. Full analysis of the dynamics in an anisotropic, rotating trap in 3D is presented and several regions of stability are identified. On resonance, the oscillation amplitude of a single particle, or of the center of mass of a many-particle system (for example, BEC), grows linearly with time and all particles are expelled from the trap. The resonances can only occur when the rotation axis is tilted away from the vertical position. The positions of the resonances (there are always two of them) do not depend on the mass but only on the characteristic frequencies of the trap and on the direction of the angular velocity of rotation.

Iwo Bialynicki-Birula; Tomasz Sowinski

2004-12-01T23:59:59.000Z

163

From transistor to trapped-ion computers for quantum chemistry  

E-Print Network (OSTI)

Over the last few decades, quantum chemistry has progressed through the development of computational methods based on modern digital computers. However, these methods can hardly fulfill the exponentially-growing resource requirements when applied to large quantum systems. As pointed out by Feynman, this restriction is intrinsic to all computational models based on classical physics. Recently, the rapid advancement of trapped-ion technologies has opened new possibilities for quantum control and quantum simulations. Here, we present an efficient toolkit that exploits both the internal and motional degrees of freedom of trapped ions for solving problems in quantum chemistry, including molecular electronic structure, molecular dynamics, and vibronic coupling. We focus on applications that go beyond the capacity of classical computers, but may be realizable on state-of-the-art trapped-ion systems. These results allow us to envision a new paradigm of quantum chemistry that shifts from the current transistor to a near-future trapped-ion-based technology.

M. -H. Yung; J. Casanova; A. Mezzacapo; J. McClean; L. Lamata; A. Aspuru-Guzik; E. Solano

2013-07-16T23:59:59.000Z

164

Life Cycle of a Linear Coastal-Trapped Disturbance  

Science Conference Proceedings (OSTI)

A recent climatology of observed coastal-trapped disturbances in the marine atmospheric boundary layer along the United States west coast motivates the detailed examination, for a specific form of imposed forcing, of a linear shallow-water ...

R. M. Samelson; A. M. Rogerson

1996-08-01T23:59:59.000Z

165

Light trapping limits in plasmonic solar cells: an analytical investigation  

E-Print Network (OSTI)

We analytically investigate the light trapping performance in plasmonic solar cells with Si/metallic structures. We consider absorption enhancements for surface plasmon polaritons (SPPs) at planar Si/metal interfaces and ...

Sheng, Xing

166

Heating of trapped ions from the quantum ground state  

E-Print Network (OSTI)

We have investigated motional heating of laser-cooled 9Be+ ions held in radio-frequency (Paul) traps. We have measured heating rates in a variety of traps with different geometries, electrode materials, and characteristic sizes. The results show that heating is due to electric-field noise from the trap electrodes which exerts a stochastic fluctuating force on the ion. The scaling of the heating rate with trap size is much stronger than that expected from a spatially uniform noise source on the electrodes (such as Johnson noise from external circuits), indicating that a microscopic uncorrelated noise source on the electrodes (such as fluctuating patch-potential fields) is a more likely candidate for the source of heating.

Q. A. Turchette; D. Kielpinski; B. E. King; D. Leibfried; D. M. Meekhof; C. J. Myatt; M. A. Rowe; C. A. Sackett; C. S. Wood; W. M. Itano; C. Monroe; D. J. Wineland

2000-02-14T23:59:59.000Z

167

Dissipative trapped electron modes in ell = 2 torsatrons  

SciTech Connect

Trapped electron modes in stellarators can be more unstable than those in tokamaks. They could be easier to detect in a stellarator and may be responsible for anomalous losses in the low collisionality regime. 5 refs., 1 fig.

Carreras, B.A.; Dominguez, N.; Lynch, V.E. (Oak Ridge National Lab., TN (USA)); Diamond, P.H. (California Univ., San Diego, CA (USA))

1989-01-01T23:59:59.000Z

168

Quantum gates, sensors, and systems with trapped ions  

E-Print Network (OSTI)

Quantum information science promises a host of new and useful applications in communication, simulation, and computational algorithms. Trapped atomic ions are one of the leading physical systems with potential to implement ...

Wang, Shannon Xuanyue

2012-01-01T23:59:59.000Z

169

Laser-driven Sisyphus cooling in an optical dipole trap  

Science Conference Proceedings (OSTI)

We propose a laser-driven Sisyphus-cooling scheme for atoms confined in a far-off resonance optical dipole trap. Utilizing the differential trap-induced ac Stark shift, two electronic levels of the atom are resonantly coupled by a cooling laser preferentially near the trap bottom. After absorption of a cooling photon, the atom loses energy by climbing the steeper potential, and then spontaneously decays preferentially away from the trap bottom. The proposed method is particularly suited to cooling alkaline-earth-metal-like atoms where two-level systems with narrow electronic transitions are present. Numerical simulations for the cases of {sup 88}Sr and {sup 174}Yb demonstrate the expected recoil and Doppler temperature limits. The method requires a relatively small number of scattered photons and can potentially lead to phase-space densities approaching quantum degeneracy in subsecond time scales.

Ivanov, Vladyslav V.; Gupta, Subhadeep [Physics Department, University of Wisconsin, Madison, Wisconsin 53706 (United States); Physics Department, University of Washington, Seattle, Washington 98195 (United States)

2011-12-15T23:59:59.000Z

170

Neutron lifetime measurements using gravitationally trapped ultracold neutrons  

E-Print Network (OSTI)

Our experiment using gravitationally trapped ultracold neutrons (UCN) to measure the neutron lifetime is reviewed. Ultracold neutrons were trapped in a material bottle covered with perfluoropolyether. The neutron lifetime was deduced from comparison of UCN losses in the traps with different surface-to-volume ratios. The precise value of the neutron lifetime is of fundamental importance to particle physics and cosmology. In this experiment, the UCN storage time is brought closer to the neutron lifetime than in any experiments before:the probability of UCN losses from the trap was only 1% of that for neutron beta decay. The neutron lifetime obtained,878.5+/-0.7stat+/-0.3sys s, is the most accurate experimental measurement to date.

A. P. Serebrov; V. E. Varlamov; A. G. Kharitonov; A. K. Fomin; Yu. N. Pokotilovski; P. Geltenbort; I. A. Krasnoschekova; M. S. Lasakov; R. R. Taldaev; A. V. Vassiljev; O. M. Zherebtsov

2007-02-06T23:59:59.000Z

171

Energy Conservation in Coastal-Trapped Wave Calculations  

Science Conference Proceedings (OSTI)

A consideration of energy conservation for coastal-trapped waves shows that, for a slowly varying medium, the normalization of the wave modes is not arbitrary. Errors related to incorrect normalization are demonstrated for a simple analytic ...

K. H. Brink

1989-07-01T23:59:59.000Z

172

2011-SE-1418 Sears_NND  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Sears, Roebuck & Co. Sears, Roebuck & Co. (freezers) Issued: June 26, 2012 BEFORE THE U.S. DEPARTMENT OF ENERGY Washington, D.C. 20585 ) ) ) ) ) Case Number: 2011-SE-1418 NOTICE OF NONCOMPLIANCE DETERMINATION Manufacturers and private labelers are prohibited from distributing covered products that do not comply with applicable federal energy conservation standards. 10 C.F.R. § 429.102; 42 U.S.C. § 6302. On September 22, 2011, DOE completed testing of one compact chest freezer, Kenmore-brand model number 255.19702010 ("19702"), privately labeled and distributed in commerce in the U.S. by Sears, Roebuck & Co. ("Sears") and manufactured in China. In December 2011 and January 2012, DOE completed testing oftln·ee additional units of 19702. DOE's testing was

173

Summit Manufacturing: Noncompliance Determination (2010-SE-0303)  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

the the Matter of: Summit Manufacturing, Inc. Case Number 2010-SE-0303 NOTICE OF NONCOMPLIANCE DETERMINATION CERTIFICATION Manufacturers of certain covered products are required to certify compliance with the applicable energy conservation standards through submission of a compliance statement and a certification report. 10 CFR § 430.62. See 42 U.S.C. 6296 . The compliance statement is a legal statement by the manufacturer that the information provided in its certification reports is true , accurate and complete, that the basic models certified meet the applicable energy conservation standard, that the energy efficiency information report is the result of testing performed in conformance with the applicable test requirements in 10 CFR part 430, subpart B; and that the manufacturer is

174

Plant View On Reducing Steam Trap Energy Loss  

E-Print Network (OSTI)

Energy will continue to be an ever increasingly important factor in the cost of doing business in the decade of the 80' s. In many petrochemical industries, energy is the second most costly item in producing a product. About 36% of our nation's total energy consumption is used by industry in producing the goods which are consumed around the world. Steam is the most commonly used energy source for the petrochemical industry. Most of this steam is used for heating and evaporating the many petrochemical liquids. This steam is then condensed and is removed from the system at the same rate as it is being formed or the loss of heat transfer will result. From a cost standpoint only condensate should be allowed through the trap. But at many plants half of the steam traps are passing excess steam. This is caused by neglect of aged steam traps which have worn out and misapplication of steam traps by oversizing or using the 'wrong' type trap. Elimination of steam wastes by an effective well engineered steam trap program is what is covered by this article.

Vallery, S. J.

1982-01-01T23:59:59.000Z

175

Metabolism of selenium (Se) in rats chronically poisoned with D- or L-selenomethionine (SeMet), selenite or selenate  

SciTech Connect

L-SeMet is a potential cancer chemoprevention agent for humans. Little difference was seen in the acute toxicity of L vs. D-SeMet in rats. To study chronic toxicity, weanling male rats were fed purified diets containing 2.5, 5.0 or 10 ppm Se as L-SeMet, D-SeMet, Na/sub 2/SeO/sub 3/ or Na/sub 2/SeO/sub 4/ for 6 weeks. Controls received 0.1 ppm Se as selenite. All rats fed 10 ppm Se died within 29 days. Se fed as D-SeMet was retained in the tissues as strongly as L-SeMet. Rats fed D or L-SeMet deposited large amounts of Se in muscle not reflected by proportionate increases in either plasma or RBC Se. Therefore, attempts to follow increases in Se body burden in individuals supplemented with large doses of L-SeMet by monitoring plasma or whole blood Se levels should be interpreted with caution.

McAdam, P.A.; Levander, O.A.

1986-03-01T23:59:59.000Z

176

Photoinduced Surface Oxidation and Its Effect on the Exciton Dynamics of CdSe Quantum Dots  

DOE Green Energy (OSTI)

With increased interest in semiconductor nanoparticles for use in quantum dot solar cells there comes a need to understand the long-term photostability of such materials. Colloidal CdSe quantum dots (QDs) were suspended in toluene and stored in combinations of light/dark and N{sub 2}/O{sub 2} to simulate four possible benchtop storage environments. CdSe QDs stored in a dark, oxygen-free environment were observed to better retain their optical properties over the course of 90 days. The excited state lifetimes, determined through femtosecond transient absorption spectroscopy, of air-equilibrated samples exposed to light exhibit a decrease in average lifetime (0.81 ns) when compared to samples stored in a nitrogen/dark environment (8.3 ns). A photoetching technique commonly used for controlled reduction of QD size was found to induce energetic trap states to CdSe QDs and accelerate the rate of electron-hole recombination. X-ray absorption near edge structure (XANES) analysis confirms surface oxidation, the extent of which is shown to be dependent on the thickness of the ligand shell.

Hines, Douglas A.; Becker, Matthew A.; Kamat, Prashant V. (Notre)

2012-11-14T23:59:59.000Z

177

Temperature dependent band offsets in PbSe/PbEuSe quantum well heterostructures  

Science Conference Proceedings (OSTI)

The band offsets of PbSe/Pb{sub 1-x}Eu{sub x}Se multi-quantum wells grown by molecular beam epitaxy are determined as a function of temperature and europium content using temperature-modulated differential transmission spectroscopy. The confined quantum well states in the valence and conduction bands are analyzed using a k{center_dot}p model with envelope function approximation. From the fit of the experimental data, the normalized conduction band offset is determined as 0.45{+-}0.15 of the band gap difference, independently of Eu content up to 14% and temperature from 20 to 300 K.

Simma, M.; Bauer, G.; Springholz, G. [Institut fuer Halbleiter und Festkoerperphysik, Johannes Kepler Universitaet, A-4040 Linz (Austria)

2012-10-22T23:59:59.000Z

178

Using shape to control photoluminescence from CdSe/CdS core/shell nanorods.  

Science Conference Proceedings (OSTI)

CdSe/CdS core/shell nanorods can exhibit high photoluminescence quantum yields, but it is not yet clear what processes determine the yields and how they can be controlled. Moreover, the effective band alignment between the core and the shell affects quantum yield, but its nature is still under debate. We systematically studied quantum yields when the shell is excited as a function of both core size and shell volume. Using time-resolved photoluminescence decay measurements and transient-absorption spectroscopy, we found that quantum yields are determined by a balance between radiative and nonradiative recombination rates, and not by single-carrier trapping. The radiative recombination rate decreases as the nanorod volume increases, independent of the core size. The results indicate that high quantum yields can be obtained only by limiting the size of the shell and point to an effective quasi-type-II band alignment for all of the nanorods in this study.

She, C.; Demortiere, A.; Shevchenko, E. V.; Pelton, M. (Center for Nanoscale Materials)

2011-06-16T23:59:59.000Z

179

Trapping of antiprotons -- a first step on the way to antihydrogen  

DOE Green Energy (OSTI)

A first step towards producing and effectively utilizing antihydrogen atoms consists of trapping antiprotons. The immediate next step must then be to control, i.e. trap the produced antihydrogen. The current state of the art in trapping antiprotons and positrons is reviewed, and the challenges in trapping the resulting neutral particles are discussed.

Holzscheiter, M.H.

1993-07-01T23:59:59.000Z

180

LgCOOleS, Se*&,,  

Office of Legacy Management (LM)

; "Ofice Mem ; "Ofice Mem . m *" ' ' *IilCl:t Consists of & " ' / Of LgCOOleS, Se*&,, es * UNITED STATES G-OVERNM NT <;$)~~ 3i;t-j /Lj ' , ~~~' jCjC;O c) TO I LT. :s. Clnr!te, ,;or,~~~,~' , -.,,..:-:-Y"' r~-;i~.L.-Z.:r DATE: uL"C!.,?r 6, 1' ?L9 A meting mj: !1:1d in i:1CG bet,. _ ^ .- ',cel representatives 51 ;.2rshz:i sr.3 the A;.35 to nwotiztc .the prices for producing FY-1: (brow oxise), _1 I%-; (green salt and .?T-12 (he::.-iZluoriic) fcr the sc2or.d 3,uarter of fisc21 1950, (Cctober, Z:ove-r.ber, 2c?Ce.:lxr l?L?). Th-: foll;:~:i;.E xttcndcd the mztin:: "-Tsh-:, -.,q ..__ _id.l - 1;. 2. 9till;Iell

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While these samples are representative of the content of NLEBeta,
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181

System and method for trapping and measuring a charged particle in a liquid  

DOE Patents (OSTI)

A system and method for trapping a charged particle is disclosed. A time-varying periodic multipole electric potential is generated in a trapping volume. A charged particle under the influence of the multipole electric field is confined to the trapping volume. A three electrode configuration giving rise to a 3D Paul trap and a four planar electrode configuration giving rise to a 2D Paul trap are disclosed.

Reed, Mark A; Krstic, Predrag S; Guan, Weihua; Zhao, Xiongce

2013-07-23T23:59:59.000Z

182

Applications of Admittance Spectroscopy in Photovoltaic Devices Beyond Majority Carrier Trapping Defects: Preprint  

DOE Green Energy (OSTI)

Admittance spectroscopy is commonly used to characterize majority-carrier trapping defects. In today's practical photovoltaic devices, however, a number of other physical mechanisms may contribute to the admittance measurement and interfere with the data interpretation. Such challenges arise due to the violation of basic assumptions of conventional admittance spectroscopy such as single-junction, ohmic contact, highly conductive absorbers, and measurement in reverse bias. We exploit such violations to devise admittance spectroscopy-based methods for studying the respective origins of 'interference': majority-carrier mobility, non-ohmic contact potential barrier, minority-carrier inversion at hetero-interface, and minority-carrier lifetime in a device environment. These methods are applied to a variety of photovoltaic technologies: CdTe, Cu(In,Ga)Se2, Si HIT cells, and organic photovoltaic materials.

Li, J. V.; Crandall, R. S.; Repins, I. L.; Nardes, A. M.; Levi, D. H.; Sulima, O.

2011-07-01T23:59:59.000Z

183

Cosmological perturbations from inhomogeneous preheating and multi-field trapping  

E-Print Network (OSTI)

We consider inhomogeneous preheating in a multi-field trapping model. The curvature perturbation is generated by inhomogeneous preheating which induces multi-field trapping at the enhanced symmetric point (ESP), and results in fluctuation in the number of e-foldings. Instead of considering simple reheating after preheating, we consider a scenario of shoulder inflation induced by the trapping. The fluctuation in the number of e-foldings is generated during this weak inflationary period, when the additional light scalar field is trapped at the local maximum of its potential. The situation may look similar to locked or thermal inflation or even to hybrid inflation, but we will show that the present mechanism of generating the curvature perturbation is very different from these others. Unlike the conventional trapped inflationary scenario, we do not make the assumption that an ESP appears at some unstable point on the inflaton potential. This assumption is crucial in the original scenario, but it is not important in the multi-field model. We also discuss inhomogeneous preheating at late-time oscillation, in which the magnitude of the curvature fluctuation can be enhanced to accommodate low inflationary scale.

Tomohiro Matsuda

2007-07-04T23:59:59.000Z

184

Trapped electron losses by interactions with coherent VLF waves  

SciTech Connect

VLF whistler waves from lightning enter the magnetosphere and cause the precipitation of energetic trapped electrons by pitch angle scattering. These events, known as Lightning-induced Electron Precipitation (LEP) have been detected by satellite and rocket instruments and by perturbations of VLF waves traveling in the earth-ionosphere waveguide. Detailed comparison of precipitating electron energy spectra and time dependence are in general agreement with calculations of trapped electron interactions with ducted whistler waves. In particular the temporal structure of the precipitation and the dynamic energy spectra of the electrons confirm this interpretation of the phenomena. There are discrepancies between observed and measured electron flux intensities and pitch angle distributions, but these quantities are sensitive to unknown wave intensities and trapped particle fluxes near the loss cone angle. The overall effect of lightning generated VLF waves on the lifetime of trapped electrons is still uncertain. The flux of electrons deflected into the bounce loss cone by a discrete whistler wave has been measured in a few cases. However, the area of the precipitation region is not known, and thus the total number of electrons lost in an LEP event can only be estimated. While the LEP events are dramatic, more important effects on trapped electrons may arise from the small but numerous deflections which increase the pitch angle diffusion rate of the electron population. {copyright} {ital 1996 American Institute of Physics.}

Walt, M.; Inan, U.S. [Space, Telecommunications and Radioscience Laboratory, Stanford University, Stanford, California (United States); Voss, H.D. [Lockheed Missiles and Space Co. (United States)

1996-07-01T23:59:59.000Z

185

Thermoelectric figure of merit of Ag{sub 2}Se with Ag and Se excess  

Science Conference Proceedings (OSTI)

In the temperature range of 100-300 K, the electric ({sigma}) and thermoelectric ({alpha}{sub 0}) properties of Ag{sub 2}Se with an excess of Ag as high as {approx}0.1 at. % and Se as high as {approx}1.0 at. %, respectively, are investigated. From the data on {sigma}, {alpha}{sub 0}, and {chi}{sub tot} (thermal conductivities), the thermoelectric power {alpha}{sub 0}{sup 2}{sigma} and the figure of merit Z are calculated. It is found that {alpha}{sub 0}{sup 2}{sigma} and Z attain the peak values at room temperature and the electron concentration n {approx} 6.5 x 10{sup 18} cm{sup -3}.

Aliev, F. F., E-mail: farzali@physics.ab.az; Jafarov, M. B.; Eminova, V. I. [Azerbaijan National Academy of Sciences, Institute of Physics (Azerbaijan)

2009-08-15T23:59:59.000Z

186

Procedure for separation of Se and determination of Se-79 by liquid scintillation  

Science Conference Proceedings (OSTI)

This report describes the development work and demonstration of a technique for separation of selenium suitable for determination of Se-79 by liquid scintillation counting. The technique has been demonstrated on actual DWPF (Defense Waste Processing Facility) sludge samples which contain very large loads of Sr-90 activity. The separation required a decontamination of selenium from Sr by a factor of over 10{sup 6}, from Co and Cs by factor of 10{sup 4}, and from Tc-99 by a factor of 100, while still maintaining a selenium recovery of about 50%. Using this technique the author has determined Se-79 in five actual DWPF samples with a precision of about 70% relative standard deviation. This separation has not been demonstrated on actual DWPF samples which have the largest Cs-137 loads. He does not anticipate that these untested samples will present a difficult problem.

Dewberry, R.A.

1991-08-11T23:59:59.000Z

187

Recent progress in tailoring trap-based positron beams  

SciTech Connect

Recent progress is described to implement two approaches to specially tailor trap-based positron beams. Experiments and simulations are presented to understand the limits on the energy spread and pulse duration of positron beams extracted from a Penning-Malmberg (PM) trap after the particles have been buffer-gas cooled (or heated) in the range of temperatures 1000 {>=} T {>=} 300 K. These simulations are also used to predict beam performance for cryogenically cooled positrons. Experiments and simulations are also presented to understand the properties of beams formed when plasmas are tailored in a PM trap in a 5 tesla magnetic field, then non-adiabatically extracted from the field using a specially designed high-permeability grid to create a new class of electrostatically guided beams.

Natisin, M. R.; Hurst, N. C.; Danielson, J. R.; Surko, C. M. [Physics Department, University of California, San Diego La Jolla CA 92093-0319 (United States)

2013-03-19T23:59:59.000Z

188

Storing Electrons Instead of Positrons Without Trapping of Positive Ions  

NLE Websites -- All DOE Office Websites (Extended Search)

Electrons Instead of Positrons Without Electrons Instead of Positrons Without Trapping of Positive Ions LS-75 T. K. Khoe October, 1986 In this note, a procedure to inject and store electrons in the ring without trapping ions will be described. The minimum injection current per bunch below which ion trapping occur will be determined. Since the vertical beam size is smaller than the horizontal beam size, we will consider the vertical motion only. The following assumptions are made: 1. The bunch period is much longer than the bunch length. This assumption allow us to use the thin lens approximation for the focusing effect of the electron bunch. 2. The bunch length is much larger than the transverse dimensions of the beam. A two-dimensional calculation can then be used to obtain the

189

Formation of Antihydrogen Rydberg atoms in strong magnetic field traps  

SciTech Connect

It is shown that several features of antihydrogen production in nested Penning traps can be described with accurate and efficient Monte Carlo simulations. It is found that cold deeply-bound Rydberg states of antihydrogen (H-bar) are produced in three-body capture in the ATRAP experiments and an additional formation mechanism -Rydberg charge transfer-, particular to the nested Penning trap geometry, is responsible for the observed fast (hot) H-bar atoms. Detailed description of the numerical propagation technique for following extreme close encounters is given. An analytic derivation of the power law behavior of the field ionization spectrum is provided.

Pohl, T.; Sadeghpour, H. R. [ITAMP, Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge MA 02138 (United States)

2008-08-08T23:59:59.000Z

190

Electron Trapping in Shear Alfven Waves that Power the Aurora  

Science Conference Proceedings (OSTI)

Results from 1D Vlasov drift-kinetic plasma simulations reveal how and where auroral electrons are accelerated along Earth's geomagnetic field. In the warm plasma sheet, electrons become trapped in shear Alfven waves, preventing immediate wave damping. As waves move to regions with larger v{sub Te}/v{sub A}, their parallel electric field decreases, and the trapped electrons escape their influence. The resulting electron distribution functions compare favorably with in situ observations, demonstrating for the first time a self-consistent link between Alfven waves and electrons that form aurora.

Watt, Clare E. J.; Rankin, Robert [University of Alberta, Edmonton, Alberta (Canada)

2009-01-30T23:59:59.000Z

191

Heating of trapped ions from the quantum ground state  

E-Print Network (OSTI)

We have investigated motional heating of laser-cooled 9Be+ ions held inradio-frequency (Paul) traps. We have measured heating rates in a variety oftraps with different geometries, electrode materials, and characteristic sizes.The results show that heating is due to electric-field noise from the trapelectrodes which exerts a stochastic fluctuating force on the ion. The scalingof the heating rate with trap size is much stronger than that expected from aspatially uniform noise source on the electrodes (such as Johnson noise fromexternal circuits), indicating that a microscopic uncorrelated noise source onthe electrodes (such as fluctuating patch-potential fields) is a more likelycandidate for the source of heating.

Turchette, Q A; King, B E; Leibfried, D; Meekhof, D M; Myatt, C J; Rowe, M A; Sackett, C A; Wood, C S; Itano, W M; Monroe, C; Wineland, D J

2000-01-01T23:59:59.000Z

192

Software: SE2-ANL - Nuclear Engineering Division (Argonne)  

NLE Websites -- All DOE Office Websites (Extended Search)

OutLoud on Nuclear Energy Argonne Energy Showcase 2012 Software SE2-ANL (Thermal-Hydraulic Codes) Bookmark and Share Standard Code Description SE2-ANL is a modified version of...

193

GE Lighting Solutions: Order (2013-SE-4901) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Order (2013-SE-4901) GE Lighting Solutions: Order (2013-SE-4901) April 4, 2013 DOE ordered General Electric Lighting Solutions, LLC to pay a 5,360 civil penalty after finding GE...

194

Deformation potentials of CdSe quantum dots  

E-Print Network (OSTI)

a v (in eV) of zinc-blende CdSe. SEPM PW PW+d a a LAPW Expt>4: The size dependence of a of C B M state of CdSe QDs. vDeformation potentials of CdSe quantum dots Jingbo L i and L

Li, Jingbo; Wang, Lin-Wang

2004-01-01T23:59:59.000Z

195

Local Structure of CuIn3Se5  

DOE Green Energy (OSTI)

The results of a detailed EXAFS study of the Cu-K, In-K, and Se-K edges CuIn3Se5 are reported. The Cu and In first nearest neighbor local structures were found to be almost identical to those in CuInSe2.

Chang, C. H.; Wei, S. H.; Leyarovska, N.; Johnson, J. W.; Zhang, S. B.; Stanbery, B. J.; Anderson, T. J.

2000-01-01T23:59:59.000Z

196

Synthesis of Cold Antihydrogen in a Cusp Trap  

Science Conference Proceedings (OSTI)

We report here the first successful synthesis of cold antihydrogen atoms employing a cusp trap, which consists of a superconducting anti-Helmholtz coil and a stack of multiple ring electrodes. This success opens a new path to make a stringent test of the CPT symmetry via high precision microwave spectroscopy of ground-state hyperfine transitions of antihydrogen atoms.

Enomoto, Y.; Nagata, Y.; Kanai, Y.; Mohri, A. [RIKEN Advanced Science Institute, Hirosawa, Wako, Saitama 351-0198 (Japan); Kuroda, N.; Kim, C. H.; Torii, H. A.; Fujii, K.; Ohtsuka, M.; Tanaka, K.; Matsuda, Y. [Graduate School of Arts and Sciences, University of Tokyo, Komaba, Meguro, Tokyo 153-8902 (Japan); Michishio, K.; Nagashima, Y. [Department of Physics, Tokyo University of Science, Kagurazaka, Shinjuku, Tokyo 162-8601 (Japan); Higaki, H. [Graduate School of Advanced Sciences of Matter, Hiroshima University, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530 (Japan); Corradini, M.; Leali, M.; Lodi-Rizzini, E.; Mascagna, V.; Venturelli, L.; Zurlo, N. [Dipartimento di Chimica e Fisica per l'Ingegneria e per i Materiali, Universita di Brescia and Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Brescia, 25133 Brescia (Italy)

2010-12-10T23:59:59.000Z

197

Detection of Magnetically Trapped Neutrons: Liquid Helium as a Scintillator  

E-Print Network (OSTI)

by Daniel Nicholas McKinsey to The Department of Physics in partial fulfillment of the requirements February 2002 #12;c 2002 - Daniel Nicholas McKinsey All rights reserved. #12;To my parents #12;Thesis advisor Author John Morrissey Doyle Daniel Nicholas McKinsey Detection of Magnetically Trapped Neutrons

McKinsey, Daniel

198

Manipulation and assembly of nanowires with holographic optical traps  

E-Print Network (OSTI)

We demonstrate that semiconductor nanowires measuring just a few nanometers in diameter can be translated, rotated, cut, fused and organized into nontrivial structures using holographic optical traps. The holographic approach to nano-assembly allows for simultaneous independent manipulation of multiple nanowires, including relative translation and relative rotation.

Ritesh Agarwal; Kosta Ladavac; Yael Roichman; Guiha Yu; Charles M. Lieber; David G. Grier

2005-09-12T23:59:59.000Z

199

Leader Electronics: Data Request (2010-SE-2301) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Data Request (2010-SE-2301) Data Request (2010-SE-2301) Leader Electronics: Data Request (2010-SE-2301) August 19, 2010 DOE requested test data from Leader Electronics Inc. for various models of external power supplies after Leader Electronics certified energy values that did not meet federal energy conservation standards. Leader Electronics was required to provide test data, including complete test reports, for external power supply models "NU50-2093400-I3(NU50-21090-300F)" and "MU03-F050040-AI(MU03-F1050-AKOS)." Leader Electronics: Data Request (2010-SE-2301) More Documents & Publications Leader Electronics: Noncompliance Determination (2010-SE-2301) Leader Electronics: Notice of Allowance (2010-SE-2301) Lutron Electronics: Noncompliance Determination (2012-SE-3796

200

Z5, Effect of Traps Spatial Localization on GaN HEMT Static ...  

Science Conference Proceedings (OSTI)

Conference Tools for 2010 Electronic Materials Conference ... In this work we discuss how trap state formation during reverse gate-source and ... by means of the commercial DESSIS-ISE (Synopsis Inc.) simulator showed that acceptor traps

Note: This page contains sample records for the topic "hor se trap" 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

Observations of Seasonal Variations in Atmospheric Greenhouse Trapping and Its Enhancement at High Sea Surface Temperature  

Science Conference Proceedings (OSTI)

The correlation between observed values of atmospheric greenhouse trapping and sea surface temperature is found to vary seasonally. Atmospheric greenhouse trapping is defined here as the difference between infrared emissions from the earth's ...

Robert Hallberg; Anand K. Inamdar

1993-05-01T23:59:59.000Z

202

Finite-geometry models of electric field noise from patch potentials in ion traps  

E-Print Network (OSTI)

We model electric field noise from fluctuating patch potentials on conducting surfaces by taking into account the finite geometry of the ion trap electrodes to gain insight into the origin of anomalous heating in ion traps. ...

Low, Guang Hao

203

Loading a planar RF Paul Trap from a cold Yb? source  

E-Print Network (OSTI)

In this thesis, we demonstrate a functioning planar radio frequency, three-rod Paul Trap, loaded with Yb+ ions that have been photoionized from a source of neutral atoms, which were cooled in a magneto-optical trap. Planar ...

Shields, Brendan John

2006-01-01T23:59:59.000Z

204

Use of Bullet Traps and Steel Targets - June 4, 2012 | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Use of Bullet Traps and Steel Targets - June 4, 2012 Use of Bullet Traps and Steel Targets - June 4, 2012 June 4, 2012 This supplement contains the currently approved document, Use...

205

Microfabricated surface ion trap on a high-finesse optical mirror  

E-Print Network (OSTI)

A novel approach to optics integration in ion traps is demonstrated based on a surface electrode ion trap that is microfabricated on top of a dielectric mirror. Additional optical losses due to fabrication are found to be ...

Herskind, Peter F.

206

Design of superconducting transmission line integrated surface-electrode ion-traps  

E-Print Network (OSTI)

We fabricated superconducting surface electrode ion traps with integrated microwave coplanar waveguides using direct-write optical lithography and a niobium on sapphire process. We then tested these traps in a closed cycle ...

Meyer, David Thomas

2011-01-01T23:59:59.000Z

207

The Extension of Baroclinic Coastal-Trapped Wave Theory to Superinertial Frequencies  

Science Conference Proceedings (OSTI)

The problem of finding baroclinic coastal-trapped wave modes is generalized from subinertial to superinertial frequencies at which complete trapping can only occur in special cases. Modes are found by a numerical resonance searching method in ...

Andrew C. Dale; Toby J. Sherwin

1996-11-01T23:59:59.000Z

208

Evaluation of Sorbent Trap Materials and Methods for Flue Gas Mercury Measurement  

Science Conference Proceedings (OSTI)

Sorbent traps are used as an alternative to continuous mercury monitors (CMM) for measuring vapor phase mercury concentrations in stacks of coal-fired power plants and for relative accuracy test audits (RATAs) of CMMs. EPRI has an ongoing program of research on sorbent trap methods, evaluating the performance of sorbent materials and the methods used to measure mercury on the sorbent traps. This report presents results of two investigations targeted at evaluating the performance of sorbent trap methods f...

2009-02-16T23:59:59.000Z

209

Hicon: Proposed Penalty (2013-SE-1426) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Hicon: Proposed Penalty (2013-SE-1426) Hicon: Proposed Penalty (2013-SE-1426) Hicon: Proposed Penalty (2013-SE-1426) July 8, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Ningbo Hicon International Industry Company, Ltd. manufactured and distributed noncompliant freezer basic model BD-200 in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Hicon: Proposed Penalty (2013-SE-1426) More Documents & Publications Hicon: Noncompliance Determination (2013-SE-1426) Hicon: Order (2013-SE-1426) Haier: Proposed Penalty

210

Philips: Proposed Penalty (2012-SE-2605) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2012-SE-2605) Proposed Penalty (2012-SE-2605) Philips: Proposed Penalty (2012-SE-2605) November 29, 2012 DOE alleged in a Notice of Proposed Civil Penalty that Philips Lighting Electronics N. A. manufactured and distributed noncompliant fluorescent lamp ballast basic model VEL-1S40-SC in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Philips: Proposed Penalty (2012-SE-2605) More Documents & Publications Philips: Noncompliance Determination (2012-SE-2605) Philips: Order (2012-SE-2605)

211

Simkar: Proposed Penalty (2012-SE-5408) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Simkar: Proposed Penalty (2012-SE-5408) Simkar: Proposed Penalty (2012-SE-5408) Simkar: Proposed Penalty (2012-SE-5408) November 21, 2012 DOE alleged in a Notice of Proposed Civil Penalty that Simkar Corporation manufactured and distributed noncompliant probe-start and pulse-start basic model metal halide lamp fixtures in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Simkar: Proposed Penalty (2012-SE-5408) More Documents & Publications Simkar: Noncompliance Determination (2012-SE-5408) Simkar: Order (2012-SE-5408)

212

Central Moloney: Proposed Penalty (2013-SE-4702) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2013-SE-4702) Proposed Penalty (2013-SE-4702) Central Moloney: Proposed Penalty (2013-SE-4702) March 20, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Central Moloney, Inc. manufactured and distributed a variety of noncompliant liquid-immersed distribution transformers in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Central Moloney: Proposed Penalty (2013-SE-4702) More Documents & Publications Central Moloney: Noncompliance Determination (2013-SE-4702) Central Moloney: Order (2013-SE-4702)

213

CNA: Proposed Penalty (2013-SE-1430) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

CNA: Proposed Penalty (2013-SE-1430) CNA: Proposed Penalty (2013-SE-1430) CNA: Proposed Penalty (2013-SE-1430) September 24, 2013 DOE alleged in a Notice of Proposed Civil Penalty that CNA International, Inc., d/b/a MC Appliance Corp. privately labeled and distributed noncompliant freezer Magic Chef model number HMCF7W in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. CNA: Proposed Penalty (2013-SE-1430) More Documents & Publications CNA: Noncompliance Determination (2013-SE-1430) CNA: Compromise Agreement (2013-SE-1430)

214

Atom trapping in a bottle beam created by a diffractive optical element  

E-Print Network (OSTI)

A diffractive optical element (DOE) has been fabricated for creating blue detuned atomic bottle beam traps. The DOE integrates several diffractive lenses for trap creation and imaging of atomic fluorescence. We characterize the performance of the DOE and demonstrate trapping of cold Cesium atoms inside a bottle beam.

V. V. Ivanov; J. A. Isaacs; M. Saffman; S. A. Kemme; A. R. Ellis; G. R. Brady; J. R. Wendt; G. W. Biedermann; S. Samora

2013-05-23T23:59:59.000Z

215

Atom trapping in a bottle beam created by a diffractive optical element  

E-Print Network (OSTI)

A diffractive optical element (DOE) has been fabricated for creating blue detuned atomic bottle beam traps. The DOE integrates several diffractive lenses for trap creation and imaging of atomic fluorescence. We characterize the performance of the DOE and demonstrate trapping of cold Cesium atoms inside a bottle beam.

Ivanov, V V; Saffman, M; Kemme, S A; Ellis, A R; Brady, G R; Wendt, J R; Biedermann, G W; Samora, S

2013-01-01T23:59:59.000Z

216

Se-based Positive Electrode Material for Rechargeable Battery ...  

Science Conference Proceedings (OSTI)

This series of matrials could be used in both Li and Na battery system. It is found that Se-containing materials showed better electrochemical performace in terms

217

ASKO Appliances: Compliance Determination (2010-SE-0601) | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

(2010-SE-0601) Septemer 8, 2010 DOE tested four units of the model D5122XXLB dishwasher manufactured by ASKO Appliances, Inc. Applying statistical analysis, DOE found that...

218

Lutron Electronics: Proposed Penalty (2012-SE-3796) | Department...  

NLE Websites -- All DOE Office Websites (Extended Search)

(2012-SE-3796) May 2, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Lutron Electronics Co., Inc. manufactured and distributed noncompliant class A external power...

219

Photoionizing Trapped Highly Charged Ions with Synchrotron Radiation  

SciTech Connect

Photoabsorption by highly charged ions plays an essential role in astrophysical plasmas. Diagnostics of photoionized plasmas surrounding binary systems rely heavily on precise identification of absorption lines and on the knowledge of their cross sections and widths. Novel experiments using an electron beam ion trap, FLASH EBIT, in combination with monochromatic synchrotron radiation allow us to investigate ions in charge states hitherto out of reach. Trapped ions can be prepared in any charge state at target densities sufficient to measure absorption cross sections below 0.1 Mb. The results benchmark state-of-the-art predictions of the transitions wavelengths, widths, and absolute cross sections. Recent high resolution results on Fe{sup 14+}, Fe{sup 15+}, and Ar{sup 12+} at photon energies up to 1 keV are presented.

Crespo, J R; Simon, M; Beilmann, C; Rudolph, J; Steinbruegge, R; Eberle, S; Schwarz, M; Baumann, T; Schmitt, B; Brunner, F; Ginzel, R; Klawitter, R; Kubicek, K; Epp, S; Mokler, P; Maeckel, V; Ullrich, J; Brown, G V; Graf, A; Leutenegger, M; Beiersdorfer, P; Behar, E; Follath, R; Reichardt, G; Schwarzkopf, O

2011-09-12T23:59:59.000Z

220

A Toy Model Study of Decay Trapping | Superconducting Magnet Division  

NLE Websites -- All DOE Office Websites (Extended Search)

A Toy Model Study of Decay Trapping, reported by Brett Parker A Toy Model Study of Decay Trapping, reported by Brett Parker Introduction A group from the BNL Superconducting Magnet Division is looking at various options for dipole magnets which would be suitable for use in a muon storage ring that is used as a neutrino factory. Since the useful neutrino beams from a neutrino factory come from straight sections it is desirable to minimize the rings arc circumference, in relation to straight section length, in order to ensure that the fraction of muons which decay in the straight section is as large as possible. Therefore superconducting magnets, with higher B-fields and smaller bend radii, are reasonable to consider for this application. Unfortunately the decay electrons generated along with the neutrinos carry on average about a third of the original

Note: This page contains sample records for the topic "hor se trap" 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

Trapped Quintessential Inflation in the context of Flux Compactifications  

E-Print Network (OSTI)

We present a model for quintessential inflation using a string modulus for the inflaton - quintessence field. The scalar potential of our model is based on generic non-perturbative potentials arising in flux compactifications. We assume an enhanced symmetry point (ESP), which fixes the initial conditions for slow-roll inflation. When crossing the ESP the modulus becomes temporarily trapped, which leads to a brief stage of trapped inflation. This is followed by enough slow roll inflation to solve the flatness and horizon problems. After inflation, the field rolls down the potential and eventually freezes to a certain value because of cosmological friction. The latter is due to the thermal bath of the hot big bang, which is produced by the decay of a curvaton field. The modulus remains frozen until the present, when it becomes quintessence.

J. C. Bueno Sanchez; K. Dimopoulos

2006-06-22T23:59:59.000Z

222

Umatilla River Basin Trap and Haul Program : Annual Report 1993.  

DOE Green Energy (OSTI)

Threemile Falls Dam is the major counting and collection point for adult salmonids returning to the Umatilla River. Returning salmon and steelhead were collected at Threemile Dam from October 23, 1992 to July 14, 1993. A total of 1,913 summer steelhead; 239 adult and 64 jack fall chinook; 355 adult and 174 jack coho; and 1,205 adult and 16 jack spring chinook were collected. Fish collected were hauled upstream from Threemile Dam using either a 370 or 3,000 gallon liberation unit. The Westland Canal facility, the major collection point for outmigrating juvenile salmonids and steelhead kelts was in operation from February 15 to July 29, 1993. During that period, fish were trapped 46 days. An estimated 3,228 pounds of fish were transported from the Westland Canal trap to the Umatilla River boat ramp at rivermile 0.5.

Zimmerman, Brian C.; Duke, Bill B.

1993-11-01T23:59:59.000Z

223

Wolf Trap, Virginia: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Trap, Virginia: Energy Resources Trap, Virginia: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 38.9398329°, -77.286094° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":38.9398329,"lon":-77.286094,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

224

Observation of cold Rb{sub 2} molecules trapped in an optical dipole trap using a laser-pulse-train technique  

SciTech Connect

In this work, we have developed and characterized a laser-pulse-train technique to observe cold Rb{sub 2} molecules trapped in an optical dipole trap. The molecules are produced in a magneto-optical trap, and then loaded into a crossed optical dipole trap. The time evolution of the molecular population is obtained by applying a laser pulse train, which photoionizes the ground-state molecules through intermediate molecular bands. Our results show that this technique allows us to obtain a faster data acquisition rate of the time evolution of the molecule population than other techniques.

Menegatti, Carlos R.; Marangoni, Bruno S.; Marcassa, Luis G. [Instituto de Fisica de Sao Carlos, Universidade de Sao Paulo, Caixa Postal 369, 13560-970, Sao Carlos, SP (Brazil)

2011-11-15T23:59:59.000Z

225

Hydrogen trapping, diffusion, and recombination in austenitic stainless steels  

DOE Green Energy (OSTI)

Trapping, diffusion, and recombination of hydrogen in austenitic stainless steels are reviewed. It is suggested that since all of these processes are strongly interdependent and since the measured recombination rates are found to vary four orders of magnitude at any temperature, the data analysis techniques used to date are insufficient. A two-region diffusion model with surface recombination is proposed in which the surface layer is characterized by a smaller diffusion coefficient than the bulk.

Langley, R.A.

1984-01-01T23:59:59.000Z

226

Adiabatic trapping in coupled kinetic Alfven-acoustic waves  

SciTech Connect

In the present work, we have discussed the effects of adiabatic trapping of electrons on obliquely propagating Alfven waves in a low {beta} plasma. Using the two potential theory and employing the Sagdeev potential approach, we have investigated the existence of arbitrary amplitude coupled kinetic Alfven-acoustic solitary waves in both the sub and super Alfvenic cases. The results obtained have been analyzed and presented graphically and can be applied to regions of space where the low {beta} assumption holds true.

Shah, H. A.; Ali, Z. [Department of Physics, G.C. University, 54000 Lahore (Pakistan); Masood, W. [COMSATS, Institute of Information Technology, Park Road, Chak Shahzad, Islamabad 44000 (Pakistan); National Centre for Physics (NCP), Shahdara Valley Road, 44000 Islamabad (Pakistan); Theoretical Plasma Physics Division, P. O. Nilore, Islamabad (Pakistan)

2013-03-15T23:59:59.000Z

227

Observation of Spin Flips with a Single Trapped Proton  

Science Conference Proceedings (OSTI)

Radio-frequency induced spin transitions of one individual proton are observed. The spin quantum jumps are detected via the continuous Stern-Gerlach effect, which is used in an experiment with a single proton stored in a cryogenic Penning trap. This is an important milestone towards a direct high-precision measurement of the magnetic moment of the proton and a new test of the matter-antimatter symmetry in the baryon sector.

Ulmer, S. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Institut fuer Physik, Johannes Gutenberg-Universitaet Mainz, D-55099 Mainz (Germany); Ruprecht Karls-Universitaet Heidelberg, D-69047 Heidelberg (Germany); Rodegheri, C. C. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Institut fuer Physik, Johannes Gutenberg-Universitaet Mainz, D-55099 Mainz (Germany); Blaum, K. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Ruprecht Karls-Universitaet Heidelberg, D-69047 Heidelberg (Germany); Kracke, H.; Mooser, A.; Walz, J. [Institut fuer Physik, Johannes Gutenberg-Universitaet Mainz, D-55099 Mainz (Germany); Helmholtz Institut Mainz, D-55099 Mainz (Germany); Quint, W. [Ruprecht Karls-Universitaet Heidelberg, D-69047 Heidelberg (Germany); GSI--Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt (Germany)

2011-06-24T23:59:59.000Z

228

Persistent currents in Bose gases confined in annular traps  

SciTech Connect

We examine the problem of stability of persistent currents in a mixture of two Bose gases trapped in an annular potential. We evaluate the critical coupling for metastability in the transition from quasi-one- to two-dimensional motion. We also evaluate the critical coupling for metastability in a mixture of two species as a function of the population imbalance. The stability of the currents is shown to be sensitive to the deviation from one-dimensional motion.

Bargi, S.; Malet, F.; Reimann, S. M. [Mathematical Physics, Lund Institute of Technology, P.O. Box 118, SE-22100 Lund (Sweden); Kavoulakis, G. M. [Technological Educational Institute of Crete, P.O. Box 1939, GR-71004, Heraklion (Greece)

2010-10-15T23:59:59.000Z

229

Mixtures of Bose gases confined in concentrically coupled annular traps  

SciTech Connect

A two-component Bose-Einstein condensate confined in an axially symmetric potential with two local minima, resembling two concentric annular traps, is investigated. The system shows a number of phase transitions that result from the competition between phase coexistence and radial-azimuthal phase separation. The ground-state phase diagram, as well as the rotational properties, including the (meta)stability of currents in this system, is analyzed.

Malet, F.; Reimann, S. M. [Mathematical Physics, LTH, Lund University, Post Office Box 118, SE-22100 Lund (Sweden); Kavoulakis, G. M. [Technological Education Institute of Crete, Post Office Box 1939, GR-71004, Heraklion (Greece)

2010-01-15T23:59:59.000Z

230

APS/DPP 111207-se 1 University Fusion Association Meeting  

E-Print Network (OSTI)

greater interaction between the Office of Science researchers and the NNSA scientists and provide greater has been included in the NNSA program. #12;APS/DPP 111207-se 6 FY2008 CR · The Department is operating Interest May 2007 SC/NNSA Joint Program in HEDLP #12;APS/DPP 111207-se 12 HEDP-Research Topics & Related

231

Mackle Company: Proposed Penalty (2010-SE-0106) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Mackle Company: Proposed Penalty (2010-SE-0106) Mackle Company: Proposed Penalty (2010-SE-0106) Mackle Company: Proposed Penalty (2010-SE-0106) June 14, 2010 DOE alleged in a Notice of Proposed Civil Penalty that The Mackle Company, Inc., sold and/or distributed noncompliant refrigerators, refrigerator-freezers, and freezers in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. The Mackle Company: Proposed Penalty (2010-SE-0106) More Documents & Publications Mackle Company: Proposed Penalty (2011-CE-2102) Mackle Company: Order (2010-SE-0106)

232

Neptun Light: Proposed Penalty (2012-SE-3504) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Neptun Light: Proposed Penalty (2012-SE-3504) Neptun Light: Proposed Penalty (2012-SE-3504) Neptun Light: Proposed Penalty (2012-SE-3504) May 2, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Neptun Light, Inc. failed to certify a variety of medium base compact fluorescent lamps as compliant with the applicable energy conservation standards. DOE regulations require a manufacturer (which includes importers) to submit reports certifying that its products have been tested and meet the applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Neptun Light: Proposed Penalty (2012-SE-3504) More Documents & Publications Neptun Light: Order (2012-SE-3504) Excellence Opto: Proposed Penalty (2013-CE-49002)

233

Teddico: Proposed Penalty (2012-SE-5409) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2012-SE-5409) Proposed Penalty (2012-SE-5409) Teddico: Proposed Penalty (2012-SE-5409) November 21, 2012 DOE alleged in a Notice of Proposed Civil Penalty that The Electrical Design, Development and Implementation Company d/b/a Teddico manufactured and distributed noncompliant metal halide lamp fixtures with magnetic probe-start ballasts in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Teddico: Proposed Penalty (2012-SE-5409) More Documents & Publications Teddico: Noncompliance Determination (2012-SE-5409)

234

Mackle Company: Proposed Penalty (2010-SE-0106) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Mackle Company: Proposed Penalty (2010-SE-0106) Mackle Company: Proposed Penalty (2010-SE-0106) Mackle Company: Proposed Penalty (2010-SE-0106) June 14, 2010 DOE alleged in a Notice of Proposed Civil Penalty that The Mackle Company, Inc., sold and/or distributed noncompliant refrigerators, refrigerator-freezers, and freezers in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. The Mackle Company: Proposed Penalty (2010-SE-0106) More Documents & Publications Mackle Company: Proposed Penalty (2011-CE-2102) Mackle Company: Order (2010-SE-0106)

235

Goodman Manufacturing: Proposed Penalty (2011-SE-4301) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2011-SE-4301) Proposed Penalty (2011-SE-4301) Goodman Manufacturing: Proposed Penalty (2011-SE-4301) December 2, 2011 DOE alleged in a Notice of Proposed Civil Penalty that Goodman Manufacturing manufactured and distributed noncompliant basic model CPC180* commercial package air conditioners in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Goodman Manufacturing: Proposed Penalty (2011-SE-4301) More Documents & Publications Goodman Manufacturing: Noncompliance Determination (2011-SE-4301)

236

Pax Global: Noncompliance Determination (2013-SE-1413) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Pax Global: Noncompliance Determination (2013-SE-1413) Pax Global: Noncompliance Determination (2013-SE-1413) Pax Global: Noncompliance Determination (2013-SE-1413) April 2, 2013 DOE issued a Notice of Noncompliance Determination to Pax Global, Inc. finding that freezer basic models (1) Crosley CCF51; (2) Crosley CCF69; (3) Crosley CCF106; and (4) Daewoo DCF-106W do not comport with the energy conservation standards. DOE determined the products were noncompliant based on DOE testing. Pax Global must immediately notify each person (or company) to whom Pax Global distributed the noncompliant products that the products do not meet Federal standards. Pax Global: Noncompliance Determination (2013-SE-1413) More Documents & Publications Pax Global: Compromise Agreement (2013-SE-1413) Daewoo: Proposed Penalty (2010-CE-0410)

237

Thermoelectric properties of n-type PbSe revisited  

Science Conference Proceedings (OSTI)

It was recently predicted \\cite{parker} and experimentally confirmed \\cite{sny_PbSe} that $p$-type PbSe would be a good thermoelectric material. Recent experimental work \\cite{pers2} now suggests that $n$-type PbSe can also be a good thermoelectric material. We now re-examine the thermoelectric performance of PbSe with a revised approximation which improves band gap accuracy. We now find that $n$-type PbSe {\\it can} be a high performance material, with thermopowers as high in magnitude as 250 $\\mu$V/K at 1000 K and 300 $\\mu$V/K at 800 K. Optimal 1000 K $n$-type doping ranges are between 2 $\\times 10^{19}$cm$^{-3}$ and 8 $\\times 10^{19}$cm$^{-3}$, while at 800 K the corresponding range is from 7 $\\times$10$^{18}$ to 4 $\\times $10$^{19}$ cm$^{-3}$.

Parker, David S [ORNL; Singh, David J [ORNL; Ren, Zhifeng [Boston College, Chestnut Hill; Zhang, Qinyong [Xihua University

2012-01-01T23:59:59.000Z

238

Revolutionary systems for catalytic combustion and diesel catalytic particulate traps.  

DOE Green Energy (OSTI)

This report is a summary of an LDRD project completed for the development of materials and structures conducive to advancing the state of the art for catalyst supports and diesel particulate traps. An ancillary development for bio-medical bone scaffolding was also realized. Traditionally, a low-pressure drop catalyst support, such as a ceramic honeycomb monolith, is used for catalytic reactions that require high flow rates of gases at high-temperatures. A drawback to the traditional honeycomb monoliths under these operating conditions is poor mass transfer to the catalyst surface in the straight-through channels. ''Robocasting'' is a unique process developed at Sandia National Laboratories that can be used to manufacture ceramic monoliths with alternative 3-dimensional geometries, providing tortuous pathways to increase mass transfer while maintaining low-pressure drops. These alternative 3-dimensional geometries may also provide a foundation for the development of self-regenerating supports capable of trapping and combusting soot particles from a diesel engine exhaust stream. This report describes the structures developed and characterizes the improved catalytic performance that can result. The results show that, relative to honeycomb monolith supports, considerable improvement in mass transfer efficiency is observed for robocast samples synthesized using an FCC-like geometry of alternating rods. Also, there is clearly a trade-off between enhanced mass transfer and increased pressure drop, which can be optimized depending on the particular demands of a given application. Practical applications include the combustion of natural gas for power generation, production of syngas, and hydrogen reforming reactions. The robocast lattice structures also show practicality for diesel particulate trapping. Preliminary results for trapping efficiency are reported as well as the development of electrically resistive lattices that can regenerate the structure by combusting the trapped soot. During this project an ancillary bio-medical application was discovered for lattices of hydroxyapatite. These structures show promise as bone scaffolds for the reparation of damaged bone. A case study depicting the manufacture of a customized device that fits into a damaged mandible is described.

Stuecker, John Nicholas; Witze, Peter O.; Ferrizz, Robert Matthew; Cesarano, Joseph, III; Miller, James Edward

2004-12-01T23:59:59.000Z

239

Enhanced photoluminescence from free-standing microstructures fabricated on MBE grown PbSe-PbSrSe MQW structure  

Science Conference Proceedings (OSTI)

Fabrication of microrods from multi-quantum well (MQW) PbSe-PbSrSe structure grown in molecular beam epitaxy (MBE) followed by its morphological as well as optical characterizations are described. Pulsed PL intensity is increased by 64 times per unit ... Keywords: MBE, MQW microrod, MQW microtube, Photoluminescence, SEM

S. Mukherjee; S. Jain; F. Zhao; J. P. Kar; D. Li; Z. Shi

2008-04-01T23:59:59.000Z

240

Midea: Noncompliance Determination (2010-SE-0110) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0-SE-0110) 0-SE-0110) Midea: Noncompliance Determination (2010-SE-0110) October 5, 2011 DOE issued a Notice of Noncompliance Determination to Midea America Corporation finding that basic model number HS-390C, a chest freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Midea must immediately notify each person (or company) to whom Midea distributed the noncompliant product that the product does not meet Federal standards. In addition, Midea must provide to DOE documents and records showing the number of units Midea distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Midea: Noncompliance Determination (2010-SE-0110) More Documents & Publications

Note: This page contains sample records for the topic "hor se trap" 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

Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) August 10, 2010 DOE issued a Notice of Allowance to Resume Distribution, authorizing Fuzhou Sunlight Lighting Electrical Appliance Company, Ltd. to resume distribution of eleven models of lamps. DOE had previously found certain Fuzhou products did not comport with the applicable energy conservation standards based on Fuzhou's testing. After determining that the original testing was not performed in accordance with DOE procedures, Fuzhou Sunlight provided new test data to DOE demonstrating that eleven models meet the applicable energy conservation standard when tested in accordance with DOE test procedures. Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402)

242

Grainger: Noncompliance Determination (2013-SE-1411) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Noncompliance Determination (2013-SE-1411) Noncompliance Determination (2013-SE-1411) Grainger: Noncompliance Determination (2013-SE-1411) April 29, 2013 DOE issued a Notice of Noncompliance Determination to Grainger International Inc. finding that freezer models, privately labeled as the Dayton 5NTX4, the Dayton 5NTX5, and the Dayton 5NTX6 do not comport with the energy conservation standards. Grainger must immediately notify each person (or company) to whom Grainger distributed the noncompliant products that the products do not meet Federal standards. In addition, Grainger must provide to DOE documents and records showing the number of units Grainger distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Grainger: Noncompliance Determination (2013-SE-1411)

243

Lattice vibrations of pure and doped GaSe  

Science Conference Proceedings (OSTI)

The Bridgman method is used to grow especially undoped and doped single crystals of GaSe. Composition and impurity content of the grown crystals were determined using X-ray fluorescence (XRF) method. X-ray diffraction, Raman scattering, photoluminescence (PL), and IR transmission measurements were performed at room temperature. The long wavelength lattice vibrations of four modifications of GaSe were described in the framework of modified one-layer linear-chain model which also takes into consideration the interaction of the selenium (Se) atom with the second nearest neighbor gallium (Ga) atom in the same layer. The existence of an eight-layer modification of GaSe is suggested and the vibrational frequencies of this modification are explained in the framework of a lattice dynamical model considered in the present work. Frequencies and the type of vibrations (gap, local, or resonance) for the impurity atoms were calculated and compared with the experimental results.

Allakhverdiev, K. [Materials Institute, Marmara Research Center, TUBITAK, Gebze/Kocaeli 41470 (Turkey) and Institute of Physics, Azerbaijan National Academy of Sciences, Baku AZ1143 (Azerbaijan)]. E-mail: kerim.allahverdi@mam.gov.tr; Baykara, T. [Materials Institute, Marmara Research Center, TUBITAK, Gebze/Kocaeli 41470 (Turkey); Ellialtioglu, S. [Department of Physics, Middle East Technical University, Ankara 06531 (Turkey); Hashimzade, F. [Institute of Physics, Azerbaijan National Academy of Sciences, Baku AZ1143 (Azerbaijan); Huseinova, D. [Institute of Physics, Azerbaijan National Academy of Sciences, Baku AZ1143 (Azerbaijan); Kawamura, K. [Institute of Materials Science, University of Tsukuba 305-8573 (Japan); Kaya, A.A. [Materials Institute, Marmara Research Center, TUBITAK, Gebze/Kocaeli 41470 (Turkey); Kulibekov, A.M. [Department of Physics, Mugla University, Mugla 48000 (Turkey); Onari, S. [Institute of Materials Science, University of Tsukuba 305-8573 (Japan)

2006-04-13T23:59:59.000Z

244

GE Lighting Solutions: Proposed Penalty (2013-SE-4901) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

GE Lighting Solutions: Proposed Penalty (2013-SE-4901) GE Lighting Solutions: Proposed Penalty (2013-SE-4901) GE Lighting Solutions: Proposed Penalty (2013-SE-4901) March 5, 2013 DOE alleged in a Notice of Proposed Civil Penalty that General Electric Lighting Solutions manufactured and distributed noncompliant traffic signal modules in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. GE Lighting Solutions: Proposed Penalty (2013-SE-4901) More Documents & Publications Act One: NPCP (2013-CE-49001) Excellence Opto: Proposed Penalty (2013-CE-49002)

245

Thermo Products: Proposed Penalty (2011-SE-1603) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Thermo Products: Proposed Penalty (2011-SE-1603) Thermo Products: Proposed Penalty (2011-SE-1603) Thermo Products: Proposed Penalty (2011-SE-1603) September 28, 2011 DOE issued this Notice of Proposed Civil Penalty Notice to Thermo Products, LLC, alleging that the company certified several models of residential air conditioning heat pumps without performing testing required by DOE regulations. DOE regulations require a manufacturer (which includes importers) to submit reports certifying that its products have been tested and meet the applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Thermo Products: Proposed Penalty (2011-SE-1603) More Documents & Publications

246

GE Lighting Solutions: Proposed Penalty (2013-SE-4901) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2013-SE-4901) Proposed Penalty (2013-SE-4901) GE Lighting Solutions: Proposed Penalty (2013-SE-4901) March 5, 2013 DOE alleged in a Notice of Proposed Civil Penalty that General Electric Lighting Solutions manufactured and distributed noncompliant traffic signal modules in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. GE Lighting Solutions: Proposed Penalty (2013-SE-4901) More Documents & Publications Watermark: Proposed Penalty (2011-SW-2908) Act One: NPCP (2013-CE-49001)

247

Engineered Products: Proposed Penalty (2012-SE-5401) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Proposed Penalty (2012-SE-5401) Proposed Penalty (2012-SE-5401) Engineered Products: Proposed Penalty (2012-SE-5401) July 19, 2012 DOE alleged in a Notice of Proposed Civil Penalty that Engineered Products Company manufactured/privately-labeled and distributed a number of units of noncompliant basic model 15701, a metal halide lamp fixture with a magnetic probe-start ballast in the U.S. Federal law subjects manufacturers and private labelers to civil penalties if those parties distribute in the U.S. products that do not meet applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Engineered Products: Proposed Penalty (2012-SE-5401) More Documents & Publications

248

Hydac: Noncompliance Determination (2012-SE-4107) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2012-SE-4107) Noncompliance Determination (2012-SE-4107) Hydac: Noncompliance Determination (2012-SE-4107) November 19, 2012 DOE issued a Notice of Noncompliance Determination to Hydac Technology Corporation finding that a variety of electric motor basic models do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Hydac must immediately notify each person (or company) to whom Hydac distributed the noncompliant products that the products do not meet Federal standards. In addition, Hydac must provide to DOE documents and records showing the number of units Hydac distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Hydac: Noncompliance Determination (2012-SE-4107)

249

Haier: Noncompliance Determination (2011-SE-1428) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Haier: Noncompliance Determination (2011-SE-1428) Haier: Noncompliance Determination (2011-SE-1428) Haier: Noncompliance Determination (2011-SE-1428) April 23, 2013 DOE issued a Notice of Noncompliance Determination to Haier America Trading, LLC finding that Haier model HMCM106EA, a freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Haier must immediately notify each person (or company) to whom Haier distributed the noncompliant products that the product does not meet Federal standards. In addition, Haier must provide to DOE documents and records showing the number of units Haier distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Haier: Noncompliance Determination (2011-SE-1428)

250

ET Industries: Noncompliance Determination (2012-SE-2902) | Department of  

NLE Websites -- All DOE Office Websites (Extended Search)

Noncompliance Determination (2012-SE-2902) Noncompliance Determination (2012-SE-2902) ET Industries: Noncompliance Determination (2012-SE-2902) May 24, 2013 DOE issued a Notice of Noncompliance Determination to ET Industries, Inc. finding that showerhead basic model TH-1 does not comport with the water conservation standards. DOE determined the product was noncompliant based on DOE testing. ET Industries must immediately notify each person (or company) to whom ET Industries distributed the noncompliant products that the product does not meet Federal standards. In addition, ET Industries must provide to DOE documents and records showing the number of units ET Industries distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. ET Industries: Noncompliance Determination (2012-SE-2902)

251

Royal Pacific: Proposed Penalty (2013-SE-33004) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Proposed Penalty (2013-SE-33004) Proposed Penalty (2013-SE-33004) Royal Pacific: Proposed Penalty (2013-SE-33004) July 5, 2013 DOE alleged in a Notice of Proposed Civil Penalty that Royal Pacific, Ltd. failed to certify ceiling fans, ceiling fan light kits, medium base compact fluorescent lamps, and illuminated exit signs as compliant with the applicable energy conservation standards. DOE regulations require a manufacturer (which includes importers) to submit reports certifying that its products have been tested and meet the applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. Royal Pacific: Proposed Penalty (2013-SE-33004) More Documents & Publications

252

Aspen: Noncompliance Determination (2010-SE-0305) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

0-SE-0305) 0-SE-0305) Aspen: Noncompliance Determination (2010-SE-0305) May 28, 2010 DOE issued a Notice of Noncompliance Determination to Aspen Manufacturing finding that a variety of basic models of split-system air conditioning heat pumps do not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Aspen must immediately notify each person (or company) to whom Aspen distributed the noncompliant products that the product does not meet Federal standards. In addition, Aspen must provide to DOE documents and records showing the number of units Aspen distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Aspen: Noncompliance Determination (2010-SE-0305)

253

Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Sunlight Lighting: Notice of Allowance (2010-SE-1402) Sunlight Lighting: Notice of Allowance (2010-SE-1402) Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402) October 8, 2010 DOE issued a Notice of Allowance to Resume Distribution, authorizing Fuzhou Sunlight Lighting Electrical Appliance Company, Ltd. to resume distribution of one model of lamp. DOE had previously found certain Fuzhou products did not comport with the applicable energy conservation standards based on Fuzhou's testing. After determining that the original testing was not performed in accordance with DOE procedures, Fuzhou Sunlight provided new test data to DOE demonstrating that one model meets the applicable energy conservation standard when tested in accordance with DOE test procedures. Fuzhou Sunlight Lighting: Notice of Allowance (2010-SE-1402)

254

Campus Security Report 1 Campus seCurity  

E-Print Network (OSTI)

Campus Security Report 1 Campus seCurity and Fire saFety report UC Santa Cruz 2010 #12;Campus Security Report 2 UC Santa Cruz Geography ........................................................ 8 Security and Access to Campus Buildings and Grounds ........................................ 8

Wilmers, Chris

255

Role of polycrystallinity in CdTe and CuInSe{sub 2} photovoltaic cells. Annual subcontract report, 1 April 1991--31 March 1992  

DOE Green Energy (OSTI)

The limiting role of polycrystallinity in thin-film solar calls has been reduced somewhat during the past year, and efficiencies of both CdTe and CuInSe{sub 2} cells are approaching 15%. Quantitative separation of loss mechanisms shows that individual losses, with the exception of forward recombination current, can be made comparable to their single crystal counterparts. One general manifestation of the extraneous trapping states in that the voltage of all polycrystalline thin-film cells drifts upward by 10--50 mV following the onset of illumination.

Sites, J.R. [Colorado State Univ., Fort Collins, CO (United States)

1992-11-01T23:59:59.000Z

256

Nuclear spin qubits in a trapped-ion quantum computer  

E-Print Network (OSTI)

Physical systems must fulfill a number of conditions to qualify as useful quantum bits (qubits) for quantum information processing, including ease of manipulation, long decoherence times, and high fidelity readout operations. Since these conditions are hard to satisfy with a single system, it may be necessary to combine different degrees of freedom. Here we discuss a possible system, based on electronic and nuclear spin degrees of freedom in trapped ions. The nuclear spin yields long decoherence times, while the electronic spin, in a magnetic field gradient, provides efficient manipulation, and the optical transitions of the ions assure a selective and efficient initialization and readout.

M. Feng; Y. Y. Xu; F. Zhou; D. Suter

2009-04-26T23:59:59.000Z

257

Hawking-like radiation does not require a trapped region  

E-Print Network (OSTI)

We discuss the issue of quasi-particle production by ``analogue black holes'' with particular attention to the possibility of reproducing Hawking radiation in a laboratory. By constructing simple geometric acoustic models, we obtain a somewhat unexpected result: We show that in order to obtain a stationary and Planckian emission of quasi-particles, it is not necessary to create a trapped region in the acoustic spacetime (corresponding to a supersonic regime in the fluid flow). It is sufficient to set up a dynamically changing flow asymptotically approaching a sonic regime with sufficient rapidity in laboratory time.

Carlos Barcelo; Stefano Liberati; Sebastiano Sonego; Matt Visser

2006-07-03T23:59:59.000Z

258

Anti-hydrogen production with positron beam ion trap  

Science Conference Proceedings (OSTI)

In low-energy antiproton physics, it is advantageous to be able to manipulate anti-particles as freely as normal particles. A robust production and storage system for high-quality positrons and antiprotons would be a substantial advance for the development of anti-matter science. The idea of electron beam ion trap could be applied for storage of anti-particle when the electron beam could be replaced by the positron beam. The bright positron beam would be brought about using synchrotron radiation source with a superconducting wiggler. The new scheme for production of anti-particles is proposed by using new accelerator technologies.

Itahashi, Takahisa [Department of Physics, Graduate School of Science, Osaka University 1-1 Machikaneyama, Toyonaka, Osaka 560-0043 (Japan)

2008-08-08T23:59:59.000Z

259

Selective control of the symmetric Dicke subspace in trapped ions  

SciTech Connect

We propose a method of manipulating selectively the symmetric Dicke subspace in the internal degrees of freedom of N trapped ions. We show that the direct access to ionic-motional subspaces, based on a suitable tuning of motion-dependent ac Stark shifts, induces a two-level dynamics involving previously selected ionic Dicke states. In this manner, it is possible to produce, sequentially and unitarily, ionic Dicke states with increasing excitation number. Moreover, we propose a probabilistic technique to produce directly any ionic Dicke state assuming suitable initial conditions.

Lopez, C. E.; Retamal, J. C. [Departamento de Fisica, Universidad de Santiago de Chile, Casilla 307 Correo 2, Santiago (Chile); Solano, E. [Physics Department, ASC, and CeNS, Ludwig-Maximilians-Universitaet, Theresienstrasse 37, 80333 Munich (Germany); Seccion Fisica, Departamento de Ciencias, Pontificia Universidad Catolica del Peru, Apartado 1761, Lima (Peru)

2007-09-15T23:59:59.000Z

260

Selective interactions in trapped ions: State reconstruction and quantum logic  

SciTech Connect

We propose the implementation of selective interactions of atom-motion subspaces in trapped ions. These interactions yield resonant exchange of population inside a selected subspace, leaving the others in a highly dispersive regime. Selectivity allows us to generate motional Fock (and other nonclassical) states with high purity out of a wide class of initial states, and becomes an unconventional cooling mechanism when the ground state is chosen. Individual population of number states can be distinctively measured, as well as the motional Wigner function. Furthermore, a protocol for implementing quantum logic through a suitable control of selective subspaces is presented.

Solano, E. [Max-Planck-Institut fuer Quantenoptik, Hans-Kopfermann-Strasse 1, D-85748 Garching, Germany and Seccion Fisica, Departamento de Ciencias, Pontificia Universidad Catolica del Peru, Apartado 1761, Lima (Peru)

2005-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hor se trap" 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

Laser cooling of a trapped particle with increased Rabi frequencies  

Science Conference Proceedings (OSTI)

This paper analyzes the cooling of a single particle in a harmonic trap with red-detuned laser light with fewer approximations than previously done in the literature. We avoid the adiabatic elimination of the excited atomic state but are still interested in Lamb-Dicke parameters {eta}cooling laser can be chosen higher than previously assumed, thereby increasing the effective cooling rate but not affecting the final outcome of the cooling process. Since laser cooling is already a well-established experimental technique, the main aim of this paper is to present a model which can be extended to more complex scenarios, like cavity-mediated laser cooling.

Blake, Tony; Kurcz, Andreas; Saleem, Norah S.; Beige, Almut [School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT (United Kingdom)

2011-11-15T23:59:59.000Z

262

Plasma outflow from a corrugated trap in the kinetic regime  

SciTech Connect

The problem of stationary plasma outflow from an open corrugated trap in the kinetic regime is considered with allowance for pair collisions in the framework of a kinetic equation with the Landau collision integral. The distribution function is studied in the limit of small-scale corrugation and a large mirror ratio. In considering a single corrugation cell, a correction for the distribution function is calculated analytically. An equation describing variations of the distribution function along the system is derived and used to study the problem of plasma outflow into vacuum.

Skovorodin, D. I.; Beklemishev, A. D. [Russian Academy of Sciences, Budker Institute of Nuclear Physics, Siberian Branch (Russian Federation)

2012-03-15T23:59:59.000Z

263

Energy trapping and shock disintegration in a composite granular medium  

E-Print Network (OSTI)

Granular materials demonstrate a strongly nonlinear behavior influencing the wave propagation in the medium. We report the first experimental observation of impulse energy confinement and the resultant disintegration of shock and solitary waves. The medium consists of alternating ensambles of high-modulus vs orders of magnitude lower modulus chains of different masses. The trapped energy is contained within the "softer" portions of the composite chain and is slowly released in the form of weak, separated pulses over an extended period of time. This effect is enhanced by using a specific group assembly and superimposed force.

C. Daraio; V. F. Nesterenko; E. B. Herbold; S. Jin

2005-09-24T23:59:59.000Z

264

Ionization Induced Trapping in a Laser Wakefield Accelerator  

Science Conference Proceedings (OSTI)

Experimental studies of electrons produced in a laser wakefield accelerator indicate trapping initiated by ionization of target gas atoms. Targets composed of helium and controlled amounts of various gases were found to increase the beam charge by as much as an order of magnitude compared to pure helium at the same electron density and decrease the beam divergence from 5.1+-1.0 to 2.9+-0.8 mrad. The measurements are supported by particle-in-cell modeling including ionization. This mechanism should allow generation of electron beams with lower emittance and higher charge than in preionized gas.

McGuffey, C.; Thomas, A. G. R.; Schumaker, W.; Matsuoka, T.; Chvykov, V.; Dollar, F. J.; Kalintchenko, G.; Yanovsky, V.; Maksimchuk, A.; Krushelnick, K.; Bychenkov, V. Yu.; Glazyrin, I. V.; Karpeev, A. V. [Center for Ultrafast Optical Science, University of Michigan, Ann Arbor, Michigan 48109 (United States); P. N. Lebedev Physics Institute, Russian Academy of Science, Leninskii Prospect 53, Moscow 119991 (Russian Federation); RFNC-VNIITF, Snezhinsk 456770, Chelyabinsk region (Russian Federation)

2010-01-15T23:59:59.000Z

265

Quantum mechanics of one-dimensional trapped Tonks gases  

E-Print Network (OSTI)

Several experimental groups are currently working towards realizing quasi-one-dimensional (1D) atom waveguides and loading them with ultracold atoms. The dynamics becomes truly 1D in a regime (Tonks gas) of low temperatures and densities and large positive scattering lengths for which the transverse mode becomes frozen, in which case the many-body Schrodinger dynamics becomes exactly soluble via a Fermi-Bose mapping theorem. In this paper we review our recent work on the exact ground state and quantum dynamics of 1D Tonks gases and assess the possibility of approaching the Tonks regime using Bessel beam optical dipole traps.

M. D. Girardeau; E. M. Wright

2001-04-30T23:59:59.000Z

266

Reliable transport through a microfabricated X-junction surface-electrode ion trap  

E-Print Network (OSTI)

We report the design, fabrication, and characterization of a microfabricated surface-electrode ion trap that supports controlled transport through the two-dimensional intersection of linear trapping zones arranged in a ninety-degree cross. The trap is fabricated with very-large-scalable-integration (VLSI) techniques which are compatible with scaling to a larger quantum information processor. The shape of the radio-frequency (RF) electrodes is optimized with a genetic algorithm to minimize axial pseudopotential barriers and to minimize ion heating during transport. Seventy-eight independent DC control electrodes enable fine control of the trapping potentials. We demonstrate reliable ion transport between junction legs, trapping of ion chains with nearly-equal spacing in one of the trap's linear sections, and merging and splitting ions from these chains. Doppler-cooled ions survive more than 10^5 round-trip transits between junction legs without loss and more than sixty-five consecutive round trips without laser cooling.

Kenneth Wright; Jason M. Amini; Daniel L. Faircloth; Curtis Volin; S. Charles Doret; Harley Hayden; C. -S. Pai; David W. Landgren; Douglas Denison; Tyler Killian; Richart E. Slusher; Alexa W. Harter

2012-10-12T23:59:59.000Z

267

Characterization of a Dominant Electron Trap in GaNAs Using Deep-Level Spectroscopy  

Science Conference Proceedings (OSTI)

Dilute-nitrogen GaNAs epitaxial layers grown by metal-organic chemical vapor deposition were characterized by deep-level transient spectroscopy (DLTS). For all samples, the dominant DLTS signal corresponds to an electron trap having an activation energy of about 0.25 to 0.35 eV. The minority-carrier trap density in the p-type material is quantified based on computer simulation of the devices. The simulations show that only about 2% of the traps in the depleted layer are filled during the transient. The fraction of the traps that are filled depends strongly on the depth of the trap, but only weakly on the doping of the layers and on the conduction-band offset. The simulations provide a pathway to obtain semi-quantitative data for analysis of minority-carrier traps by DLTS.

Johnston, S. W.; Kurtz, S. R.

2006-08-01T23:59:59.000Z

268

To:... Subject: Electromagnetic Impact of CEBAF Beam on Hydrogen Trap EXPECTED IMPACT OF CEBAF BEAM ON HYDROGEN TRAP  

E-Print Network (OSTI)

A magnetic ultra-cold trap of fully polarized atomic hydrogen is being considered for using as a target for Mller polarimetry at CEBAF, at beam currents up to 100 A. This note addresses possible problems caused by the CEBAF beam impact on such a target. The beam current generates an electromagnetic RF radiation which may cause a target depolarization inducing spin flips. Also, a part of the radiation may be absorbed in the cell pipe, heating it. The beam also heats up the gas by ionization. 1

unknown authors

2003-01-01T23:59:59.000Z

269

Self-trapping dynamics in a 2D optical lattice  

E-Print Network (OSTI)

We describe theoretical models for the recent experimental observation of Macroscopic Quantum Self-Trapping (MQST) in the transverse dynamics of an ultracold bosonic gas in a 2D lattice. The pure mean-field model based on the solution of coupled nonlinear equations fails to reproduce the experimental observations. It greatly overestimates the initial expansion rates at short times and predicts a slower expansion rate of the cloud at longer times. It also predicts the formation of a hole surrounded by a steep square fort-like barrier which was not observed in the experiment. An improved theoretical description based on a simplified Truncated Wigner Approximation (TWA), which adds phase and number fluctuations in the initial conditions, pushes the theoretical results closer to the experimental observations but fails to quantitatively reproduce them. An explanation of the delayed expansion as a consequence of a new type of self-trapping mechanism, where quantum correlations suppress tunneling even when there are no density gradients, is discussed and supported by numerical time-dependent Density Matrix Renormalization Group (t-DMRG) calculations performed in a simplified two coupled tubes set-up.

Shuming Li; Salvatore R. Manmana; Ana Maria Rey; Rafael Hipolito; Aaron Reinhard; Jean-Flix Riou; Laura A. Zundel; David S. Weiss

2013-05-20T23:59:59.000Z

270

THE DISCOVERY OF GEOMAGNETICALLY TRAPPED COSMIC-RAY ANTIPROTONS  

Science Conference Proceedings (OSTI)

The existence of a significant flux of antiprotons confined to Earth's magnetosphere has been considered in several theoretical works. These antiparticles are produced in nuclear interactions of energetic cosmic rays with the terrestrial atmosphere and accumulate in the geomagnetic field at altitudes of several hundred kilometers. A contribution from the decay of albedo antineutrons has been hypothesized in analogy to proton production by neutron decay, which constitutes the main source of trapped protons at energies above some tens of MeV. This Letter reports the discovery of an antiproton radiation belt around the Earth. The trapped antiproton energy spectrum in the South Atlantic Anomaly (SAA) region has been measured by the PAMELA experiment for the kinetic energy range 60-750 MeV. A measurement of the atmospheric sub-cutoff antiproton spectrum outside the radiation belts is also reported. PAMELA data show that the magnetospheric antiproton flux in the SAA exceeds the cosmic-ray antiproton flux by three orders of magnitude at the present solar minimum, and exceeds the sub-cutoff antiproton flux outside radiation belts by four orders of magnitude, constituting the most abundant source of antiprotons near the Earth.

Adriani, O. [Department of Physics, University of Florence, I-50019 Sesto Fiorentino, Florence (Italy); Barbarino, G. C. [Department of Physics, University of Naples 'Federico II', I-80126 Naples (Italy); Bazilevskaya, G. A. [Lebedev Physical Institute, RU-119991, Moscow (Russian Federation); Bellotti, R.; Bruno, A.; Cafagna, F. [Department of Physics, University of Bari, I-70126 Bari (Italy); Boezio, M.; Bonvicini, V. [INFN, Sezione di Trieste, I-34149 Trieste (Italy); Bogomolov, E. A. [Ioffe Physical Technical Institute, RU-194021 St. Petersburg (Russian Federation); Bongi, M.; Bottai, S. [INFN, Sezione di Florence, I-50019 Sesto Fiorentino, Florence (Italy); Borisov, S.; Casolino, M.; De Pascale, M. P.; De Santis, C. [INFN, Sezione di Rome 'Tor Vergata', I-00133 Rome (Italy); Campana, D.; Carbone, R.; Consiglio, L. [INFN, Sezione di Naples, I-80126 Naples (Italy); Carlson, P. [KTH, Department of Physics, and the Oskar Klein Centre for Cosmoparticle Physics, AlbaNova University Centre, SE-10691 Stockholm (Sweden); Castellini, G., E-mail: alessandro.bruno@ba.infn.it [IFAC, I-50019 Sesto Fiorentino, Florence (Italy)

2011-08-20T23:59:59.000Z

271

The discovery of geomagnetically trapped cosmic ray antiprotons  

E-Print Network (OSTI)

The existence of a significant flux of antiprotons confined to Earth's magnetosphere has been considered in several theoretical works. These antiparticles are produced in nuclear interactions of energetic cosmic rays with the terrestrial atmosphere and accumulate in the geomagnetic field at altitudes of several hundred kilometers. A contribution from the decay of albedo antineutrons has been hypothesized in analogy to proton production by neutron decay, which constitutes the main source of trapped protons at energies above some tens of MeV. This Letter reports the discovery of an antiproton radiation belt around the Earth. The trapped antiproton energy spectrum in the South Atlantic Anomaly (SAA) region has been measured by the PAMELA experiment for the kinetic energy range 60--750 MeV. A measurement of the atmospheric sub-cutoff antiproton spectrum outside the radiation belts is also reported. PAMELA data show that the magnetospheric antiproton flux in the SAA exceeds the cosmic-ray antiproton flux by three orders of magnitude at the present solar minimum, and exceeds the sub-cutoff antiproton flux outside radiation belts by four orders of magnitude, constituting the most abundant source of antiprotons near the Earth.

O. Adriani; G. C. Barbarino; G. A. Bazilevskaya; R. Bellotti; M. Boezio; E. A. Bogomolov; M. Bongi; V. Bonvicini; S. Borisov; S. Bottai; A. Bruno; F. Cafagna; D. Campana; R. Carbone; P. Carlson; M. Casolino; G. Castellini; L. Consiglio; M. P. De Pascale; C. De Santis; N. De Simone; V. Di Felice; A. M. Galper; W. Gillard; L. Grishantseva; G. Jerse; A. V. Karelin; M. D. Kheymits; S. V. Koldashov; S. Y. Krutkov; A. N. Kvashnin; A. Leonov; V. Malakhov; L. Marcelli; A. G. Mayorov; W. Menn; V. V. Mikhailov; E. Mocchiutti; A. Monaco; N. Mori; N. Nikonov; G. Osteria; F. Palma; P. Papini; M. Pearce; P. Picozza; C. Pizzolotto; M. Ricci; S. B. Ricciarini; L. Rossetto; R. Sarkar; M. Simon; R. Sparvoli; P. Spillantini; Y. I. Stozhkov; A. Vacchi; E. Vannuccini; G. Vasilyev; S. A. Voronov; Y. T. Yurkin; J. Wu; G. Zampa; N. Zampa; V. G. Zverev

2011-07-25T23:59:59.000Z

272

Trapping ultracold gases near cryogenic materials with rapid reconfigurability  

E-Print Network (OSTI)

We demonstrate a novel atom chip trapping system that allows the placement and high-resolution imaging of ultracold atoms within microns from any exchange with minimal experimental downtime. The sample is not connected to the atom chip, allowing rapid exchange without perturbing the atom chip or laser cooling apparatus. Exchange of the sample and retrapping of atoms has been performed within a week turnaround, limited only by chamber baking. Moreover, the decoupling of sample and atom chip provides the ability to independently tune the sample temperature and its position with respect to the trapped ultracold gas, which itself may remain in the focus of a high-resolution imaging system. As a first demonstration of this new system, we have confined a 700-nK cloud of 8x10^4 87Rb atoms within 100 um of a gold-mirrored 100-um-thick silicon substrate. The substrate was cooled to 35 K without use of a heat shield, while the atom chip, 120 um away, remained at room temperature. Atoms may be imaged and retrapped every 16 s, allowing rapid data collection.

Matthew A. Naides; Richard W. Turner; Ruby A. Lai; Jack M. DiSciacca; Benjamin L. Lev

2013-11-08T23:59:59.000Z

273

Angular constraint on light-trapping absorption enhancement in solar cells  

E-Print Network (OSTI)

Light trapping for solar cells can reduce production cost and improve energy conversion efficiency. Understanding some of the basic theoretical constraints on light trapping is therefore of fundamental importance. Here, we develop a general angular constraint on the absorption enhancement in light trapping. We show that there is an upper limit for the angular integration of absorption enhancement factors. This limit is determined by the number of accessible resonances supported by an absorber.

Yu, Zongfu

2010-01-01T23:59:59.000Z

274

First-principles study of Se-intercalated graphite  

DOE Green Energy (OSTI)

Se-intercalated graphite compounds (Se-GICs) are considered as promising candidates for room-temperature thermoelectric cooling devices. Here the authors analyze the crystallographic structure and electronic properties of these materials within the framework of density-functional theory. First, the Adaptive-Coordinate Real-space Electronic Structure (ACRES) code is used to determine the stable structure of a representative stage-2 Se-GIC by relaxing atomic positions. The stable configuration is found to be a pendant-type structure, in which each selenium is bonded covalently to two atoms within the same carbon layer, causing a local distortion of the in-plane conjugation of the graphite. Then, they use the full potential linearized augmented plane wave (FP-LAPW) method to calculate the electronic band structure of the material and discuss its properties. Near the Fermi energy E{sub F}, there are wide bands originating from the host graphitic electronic structure and a few very narrow bands mainly of Se 4p character. The latter bands contribute to high peaks in the density of states close to E{sub F}. They show that this feature, although typical of many good thermoelectrics, does not necessarily imply high thermopower in the case of Se-GICs.

BARTKOWIAK,M.; MODINE,NORMAND A.; SOFO,J.O.; MAHAN,G.D.

2000-05-11T23:59:59.000Z

275

High-Temperature Microfluidic Synthesis of CdSe Nanocrystals in Nanoliter Droplets  

E-Print Network (OSTI)

Microfluidic Synthesis of CdSe Nanocrystals in Nanolitertemperature synthesis of CdSe nanocrystals in nanoliter-produced high quality CdSe nanocrystals, as verified by

Chan, Emory M.; Alivisatos, A. Paul; Mathies, Richard A.

2005-01-01T23:59:59.000Z

276

Mechanical and electronic-structure properties of compressed CdSe tetrapod nanocrystals  

E-Print Network (OSTI)

properties of compressed CdSe tetrapod nanocrystals Joshuamechanical properties of CdSe tetrapods under directionalstructural transformations in CdSe nanocrystals, it has only

Schrier, Joshua; Lee, Byounghak; Wang, Lin-Wang

2008-01-01T23:59:59.000Z

277

Nano-texturization for Light Trapping in Crystalline Silicon Solar Cells  

Science Conference Proceedings (OSTI)

Abstract Scope, To address the question whether random or periodic nanostructures lead to better light trapping in solar cells, we design and fabricate three...

278

Leader Electronics: Noncompliance Determination (2010-SE-2301) | Department  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2010-SE-2301) Noncompliance Determination (2010-SE-2301) Leader Electronics: Noncompliance Determination (2010-SE-2301) August 24, 2010 DOE issued a Notice of Noncompliance Determination to Leader Electronics, Inc. finding that "NU50-2093400-I3(NU50-21090-300F)" and "MU03-F050040-A1(MU03-Fl050-AKOS)" of external power supplies do not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. Leader Electronics must immediately notify each person (or company) to whom Leader Electronics distributed the noncompliant products that the products do not meet Federal standards. In addition, Leader Electronics must provide to DOE documents and records showing the number of units Leader Electronics

279

Central Moloney: Noncompliance Determination (2013-SE-4702) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Central Moloney: Noncompliance Determination (2013-SE-4702) Central Moloney: Noncompliance Determination (2013-SE-4702) Central Moloney: Noncompliance Determination (2013-SE-4702) March 11, 2013 DOE issued a Notice of Noncompliance Determination to Central Moloney, Inc. finding that liquid-immersed distribution transformer basic models 30300150 and 32500095 do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Central Moloney must immediately notify each person (or company) to whom Central Moloney distributed the noncompliant products that the products do not meet Federal standards. In addition, Central Moloney must provide to DOE documents and records showing the number of units Central Moloney distributed and to whom. The manufacturer and/or private labeler

280

Hicon: Noncompliance Determination (2013-SE-1426) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hicon: Noncompliance Determination (2013-SE-1426) Hicon: Noncompliance Determination (2013-SE-1426) Hicon: Noncompliance Determination (2013-SE-1426) February 14, 2013 DOE issued a Notice of Noncompliance Determination to Ningbo Hicon International Industry Company, Ltd. finding that model number BD-200, a compact chest freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Hiicon must immediately notify each person (or company) to whom Hicon distributed the noncompliant products that the product does not meet Federal standards. In addition, Hicon must provide to DOE documents and records showing the number of units Hicon distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil

Note: This page contains sample records for the topic "hor se trap" 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.


281

Universal: Noncompliance Determination (2013-SE-26004) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Universal: Noncompliance Determination (2013-SE-26004) Universal: Noncompliance Determination (2013-SE-26004) Universal: Noncompliance Determination (2013-SE-26004) September 6, 2013 DOE issued a Notice of Noncompliance Determination to Universal Lighting Technologies, Inc. finding that fluorescent lamp ballast model B140R277HP does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Universal must immediately notify each person (or company) to whom Universal distributed the noncompliant products that the product does not meet Federal standards. In addition, Universal must provide to DOE documents and records showing the number of units Universal distributed and to whom. The manufacturer and/or private labeler of the product may be subject to

282

SeQuential Biofuels LLC | Open Energy Information  

Open Energy Info (EERE)

SeQuential Biofuels LLC SeQuential Biofuels LLC Jump to: navigation, search Name SeQuential Biofuels LLC Place Portland, Oregon Zip 97231 Sector Biofuels Product A biofuels marketing and distribution company with several offices in Oregon. Coordinates 45.511795°, -122.675629° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.511795,"lon":-122.675629,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

283

Fuzhou Sunlight: Noncompliance Determination (2010-SE-1402) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Sunlight: Noncompliance Determination (2010-SE-1402) Sunlight: Noncompliance Determination (2010-SE-1402) Fuzhou Sunlight: Noncompliance Determination (2010-SE-1402) June 16, 2010 DOE issued a Notice of Noncompliance Determination to Fuzhou Sunlight Lighting Electrical Appliance Co., Ltd. finding that a variety of models of incandescent reflector lamps do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Fuzhou Sunlight must immediately notify each person (or company) to whom Fuzhou Sunlight distributed the noncompliant products that the products do not meet Federal standards. In addition, Fuzhou Sunlight must provide to DOE documents and records showing the number of units Fuzhou Sunlight distributed and to whom. The manufacturer

284

GE Lighting Solutions: Noncompliance Determination (2013-SE-4901) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2013-SE-4901) Noncompliance Determination (2013-SE-4901) GE Lighting Solutions: Noncompliance Determination (2013-SE-4901) January 11, 2013 DOE issued a Notice of Noncompliance Determination to General Electric Lighting Solutions finding that various models of traffic signal modules do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. GE Lighting Solutions must immediately notify each person (or company) to whom GE Lighting Solutions distributed the noncompliant products that the products do not meet Federal standards. In addition, GE Lighting Solutions must provide to DOE documents and records showing the number of units GE Lighting Solutions distributed and to whom. The manufacturer

285

Aspen: Noncompliance Determination (2011-SE-1602) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Aspen: Noncompliance Determination (2011-SE-1602) Aspen: Noncompliance Determination (2011-SE-1602) Aspen: Noncompliance Determination (2011-SE-1602) October 3, 2011 DOE issued a Notice of Noncompliance Determination to Aspen Manufacturing finding that indoor unit model AEW244 and outdoor unit model NCPC-424-3010 of residential split system central air conditioning system do not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. Aspen must immediately notify each person (or company) to whom Aspen distributed the noncompliant products that the product does not meet Federal standards. In addition, Aspen must provide to DOE documents and records showing the number of units Aspen distributed and to whom. The manufacturer and/or private labeler of

286

Precision: Noncompliance Determination (2013-SE-1410) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Precision: Noncompliance Determination (2013-SE-1410) Precision: Noncompliance Determination (2013-SE-1410) Precision: Noncompliance Determination (2013-SE-1410) April 10, 2013 DOE issued a Notice of Noncompliance Determination to Precision Trading Corp. finding that Precision model Premium PFR515M, a freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Precision must immediately notify each person (or company) to whom Precision distributed the noncompliant products that the product does not meet Federal standards. In addition, Precision must provide to DOE documents and records showing the number of units Precision distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties.

287

Philips: Noncompliance Determination (2012-SE-2605) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2012-SE-2605) Noncompliance Determination (2012-SE-2605) Philips: Noncompliance Determination (2012-SE-2605) August 31, 2012 DOE issued a Notice of Noncompliance Determination to Philips Lighting Electronics N. A. finding that basic model VEL-1S40-SC, a fluorescent lamp ballast, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on the company's own testing. Philips must immediately notify each person (or company) to whom Philips distributed the noncompliant products that the product does not meet Federal standards. In addition, Philips must provide to DOE documents and records showing the number of units Philips distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties.

288

Universal: Noncompliance Determination (2013-SE-26004) | Department of  

NLE Websites -- All DOE Office Websites (Extended Search)

Universal: Noncompliance Determination (2013-SE-26004) Universal: Noncompliance Determination (2013-SE-26004) Universal: Noncompliance Determination (2013-SE-26004) September 6, 2013 DOE issued a Notice of Noncompliance Determination to Universal Lighting Technologies, Inc. finding that fluorescent lamp ballast model B140R277HP does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Universal must immediately notify each person (or company) to whom Universal distributed the noncompliant products that the product does not meet Federal standards. In addition, Universal must provide to DOE documents and records showing the number of units Universal distributed and to whom. The manufacturer and/or private labeler of the product may be subject to

289

Sears: Noncompliance Determination (2011-SE-1418) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Sears: Noncompliance Determination (2011-SE-1418) Sears: Noncompliance Determination (2011-SE-1418) Sears: Noncompliance Determination (2011-SE-1418) June 26, 2012 DOE issued a Notice of Noncompliance Determination to Sears, Roebuck & Co. finding that Kenmore-brand model number 255.19502010 ("19502") and Kenmore-brand model number 255.19702010 ("19702"), compact chest freezers, do not comport with the energy conservation standards. DOE determined the products were noncompliant based on DOE testing. Sears must immediately notify each person (or company) to whom Sears distributed the noncompliant products that the products do not meet Federal standards. In addition, Sears must provide to DOE documents and records showing the number of units Sears distributed and to whom. The manufacturer and/or private labeler of

290

Cooper: Noncompliance Determination (2012-SE-4701) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Cooper: Noncompliance Determination (2012-SE-4701) Cooper: Noncompliance Determination (2012-SE-4701) Cooper: Noncompliance Determination (2012-SE-4701) June 12, 2012 DOE issued a Notice of Noncompliance Determination to Cooper Power Systems, LLC finding that basic models 277-99.28, 277-99.26, and 277-99.22 of distribution transformers do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Cooper must immediately notify each person (or company) to whom Cooper distributed the noncompliant products that the products do not meet Federal standards. In addition, Cooper must provide to DOE documents and records showing the number of units Cooper distributed and to whom. The manufacturer and/or private labeler of the product may

291

Teddico: Noncompliance Determination (2012-SE-5409) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Teddico: Noncompliance Determination (2012-SE-5409) Teddico: Noncompliance Determination (2012-SE-5409) Teddico: Noncompliance Determination (2012-SE-5409) November 20, 2012 DOE issued a Notice of Noncompliance Determination to The Electrical Design, Development and Implementation Company d/b/a Teddico finding that a variety of basic models of magnetic probe-start metal halide lamp fixtures do not comport with the energy conservation standards. DOE determined the products were noncompliant based on the company's own testing. Teddico must immediately notify each person (or company) to whom Teddico distributed the noncompliant products that the products do not meet Federal standards. In addition, Teddico must provide to DOE documents and records showing the number of units Teddico distributed and to whom. The

292

Simkar: Noncompliance Determination (2012-SE-5408) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2012-SE-5408) Noncompliance Determination (2012-SE-5408) Simkar: Noncompliance Determination (2012-SE-5408) December 5, 2012 DOE issued a Notice of Noncompliance Determination to Simkar Corporation finding that magnetic probe-start and pulse-start basic models of metal halide lamp fixtures do not comport with the energy conservation standards. DOE determined the products were noncompliant based on Simkar's own testing. Simkar must immediately notify each person (or company) to whom Simkar distributed the noncompliant products that the products do not meet Federal standards. In addition, Simkar must provide to DOE documents and records showing the number of units Simkar distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties.

293

Felix Storch: Noncompliance Determination (2011-SE-1420) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Felix Storch: Noncompliance Determination (2011-SE-1420) Felix Storch: Noncompliance Determination (2011-SE-1420) Felix Storch: Noncompliance Determination (2011-SE-1420) October 5, 2011 DOE issued a Notice of Noncompliance Determination to Felix Storch, Inc., finding that model number CF11ES, a chest freezer does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Felix Storch must immediately notify each person (or company) to whom Felix Storch distributed the noncompliant products that the product does not meet Federal standards. In addition, Felix Storch must provide to DOE documents and records showing the number of units Felix Storch distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil

294

Bigwall: Noncompliance Determination (2013-SE-1412) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Bigwall: Noncompliance Determination (2013-SE-1412) Bigwall: Noncompliance Determination (2013-SE-1412) Bigwall: Noncompliance Determination (2013-SE-1412) April 10, 2013 DOE issued a Notice of Noncompliance Determination to Bigwall Enterprises, Inc. finding that freezer model W1CF106 under the Wellington brand (''the Wellington W1CF106") does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Bigwall Enterprises, Inc. must immediately notify each person (or company) to whom Bigwall distributed the noncompliant products that the product does not meet Federal standards. In addition, Bigwall must provide to DOE documents and records showing the number of units Bigwall distributed and to whom. The manufacturer and/or private labeler of the

295

Leader Electronics: Notice of Allowance (2010-SE-2301) | Department of  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Leader Electronics: Notice of Allowance (2010-SE-2301) Leader Electronics: Notice of Allowance (2010-SE-2301) Leader Electronics: Notice of Allowance (2010-SE-2301) September 13, 2010 DOE issued a Notice of Allowance to Resume Distribution to Leader Electronics Inc., authorizing Leader Electronics to resume distribution of the external power supply model "MU03-F050040-A1(MU03-F1050-AKOS)". DOE had previously issued a Notice of Non-Compliance Determination based on test results submitted by Leader Electronics showing that certain models were noncompliant. After an internal review, Leader Electronics determined that the original test results reported to DOE were incorrect. Leader has submitted complete test data, which DOE has reviewed closely, and DOE has determined that the model complies with the applicable energy conservation

296

CNA: Noncompliance Determination (2013-SE-1430) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Noncompliance Determination (2013-SE-1430) Noncompliance Determination (2013-SE-1430) CNA: Noncompliance Determination (2013-SE-1430) July 1, 2013 DOE issued a Notice of Noncompliance Determination to CNA International, Inc., d/b/a MC Appliance Corp. finding that Magic Chef-brand model HMCF7W ("CNA model HMCF7W") does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. CNA must immediately notify each person (or company) to whom CNA distributed the noncompliant products that the product does not meet Federal standards. In addition, CNA must provide to DOE documents and records showing the number of units CNA distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties.

297

Golden Opportunity: Noncompliance Determination (2013-SE-1418) | Department  

NLE Websites -- All DOE Office Websites (Extended Search)

Noncompliance Determination (2013-SE-1418) Noncompliance Determination (2013-SE-1418) Golden Opportunity: Noncompliance Determination (2013-SE-1418) April 24, 2013 DOE issued a Notice of Noncompliance Determination to Golden Opportunity, Inc. finding that freezer models Golden GFC51 and Golden GFC69 do not comport with the energy conservation standards. DOE determined the products were noncompliant based on DOE testing. Golden Opportunity must immediately notify each person (or company) to whom Golden Opportunity distributed the noncompliant products that the products do not meet Federal standards. In addition, Golden Opportunity must provide to DOE documents and records showing the number of units Golden Opportunity distributed and to whom. The manufacturer and/or private labeler of the products may be

298

Bigwall: Noncompliance Determination (2013-SE-1412) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Noncompliance Determination (2013-SE-1412) Noncompliance Determination (2013-SE-1412) Bigwall: Noncompliance Determination (2013-SE-1412) April 10, 2013 DOE issued a Notice of Noncompliance Determination to Bigwall Enterprises, Inc. finding that freezer model W1CF106 under the Wellington brand (''the Wellington W1CF106") does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Bigwall Enterprises, Inc. must immediately notify each person (or company) to whom Bigwall distributed the noncompliant products that the product does not meet Federal standards. In addition, Bigwall must provide to DOE documents and records showing the number of units Bigwall distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties.

299

Excitons in single and double GaAs/AlGaAs/ZnSe/Zn(Cd)MnSe heterovalent quantum wells  

Science Conference Proceedings (OSTI)

Exciton photoluminescence spectra, photoluminescence excitation spectra, and magnetophotoluminescence spectra of single (GaAs/AlGaAs/ZnMnSe) and double (GaAs/AlGaAs/ZnSe/ZnCdMnSe) heterovalent quantum wells formed by molecular beam epitaxy are studied. It is shown that the exciton absorption spectrum of such quantum wells mainly reproduces the resonant exciton spectrum expected for usual quantum wells with similar parameters, while the radiative exciton recombination have substantial distinctions, in particular the additional localization mechanism determined by defects generated by heterovalent interface exists. The nature of these localization centers is not currently clarified; their presence leads to broadening of photoluminescence lines and to an increase in the Stokes shift between the peaks of luminescence and absorption, as well as determining the variation in the magnetic g factor of bound exciton complexes.

Toropov, A. A., E-mail: toropov@beam.ioffe.ru; Kaibyshev, V. Kh.; Terent'ev, Ya. V.; Ivanov, S. V.; Kop'ev, P. S. [Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation)

2011-02-15T23:59:59.000Z

300

Strong downslope wind events in Ammassalik, SE Greenland  

Science Conference Proceedings (OSTI)

Ammassalik in SE Greenland is known for strong winds events that can reach hurricane intensity and cause severe destruction in the local town. Yet, these winds and their impact on the nearby fjord and shelf region have not been studied in detail.

M. Oltmanns; F. Straneo; G. W. K. Moore; S. H. Mernild

Note: This page contains sample records for the topic "hor se trap" 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

Steven Chu: Laser Cooling and Trapping of Atoms  

Office of Scientific and Technical Information (OSTI)

Steven Chu Steven Chu Laser Cooling and Trapping of Atoms Resources with Additional Information · Interviews, Speeches, and Presentations · Patents Steven Chu Photo Credit: Lawrence Berkeley National Laboratory Roy Kaltschmidt, Photographer Steven Chu was appointed by President Barack Obama to be the 12th Secretary of Energy and served in this capacity until April 22, 2013. He was previously Director of Lawrence Berkeley National Laboratory (LBNL), Professor in the Physics Department at the University of California, Berkeley, and 'the Theodore and Frances Geballe Professor of Physics and Applied Physics at Stanford University. Professor Chu's research is in atomic physics, polymer and biophysics. His thesis and postdoctoral work at Berkeley ... was the observation of parity non-conservation in atomic transitions in 1978. This experiment was one of the earliest atomic physics confirmations of the Weinberg-Salam-Glashow theory that unifies the weak and electromagnetic forces.

302

Steven Chu: Laser Cooling and Trapping of Atoms  

NLE Websites -- All DOE Office Websites (Extended Search)

Steven Chu Steven Chu Laser Cooling and Trapping of Atoms Resources with Additional Information · Interviews, Speeches, and Presentations · Patents Steven Chu Photo Credit: Lawrence Berkeley National Laboratory Roy Kaltschmidt, Photographer Steven Chu was appointed by President Barack Obama to be the 12th Secretary of Energy and served in this capacity until April 22, 2013. He was previously Director of Lawrence Berkeley National Laboratory (LBNL), Professor in the Physics Department at the University of California, Berkeley, and 'the Theodore and Frances Geballe Professor of Physics and Applied Physics at Stanford University. Professor Chu's research is in atomic physics, polymer and biophysics. His thesis and postdoctoral work at Berkeley ... was the observation of parity non-conservation in atomic transitions in 1978. This experiment was one of the earliest atomic physics confirmations of the Weinberg-Salam-Glashow theory that unifies the weak and electromagnetic forces.

303

Lean NOx Trap Catalysis for Lean Natural Gas Engine Applications  

Science Conference Proceedings (OSTI)

Distributed energy is an approach for meeting energy needs that has several advantages. Distributed energy improves energy security during natural disasters or terrorist actions, improves transmission grid reliability by reducing grid load, and enhances power quality through voltage support and reactive power. In addition, distributed energy can be efficient since transmission losses are minimized. One prime mover for distributed energy is the natural gas reciprocating engine generator set. Natural gas reciprocating engines are flexible and scalable solutions for many distributed energy needs. The engines can be run continuously or occasionally as peak demand requires, and their operation and maintenance is straightforward. Furthermore, system efficiencies can be maximized when natural gas reciprocating engines are combined with thermal energy recovery for cooling, heating, and power applications. Expansion of natural gas reciprocating engines for distributed energy is dependent on several factors, but two prominent factors are efficiency and emissions. Efficiencies must be high enough to enable low operating costs, and emissions must be low enough to permit significant operation hours, especially in non-attainment areas where emissions are stringently regulated. To address these issues the U.S. Department of Energy and the California Energy Commission launched research and development programs called Advanced Reciprocating Engine Systems (ARES) and Advanced Reciprocating Internal Combustion Engines (ARICE), respectively. Fuel efficiency and low emissions are two primary goals of these programs. The work presented here was funded by the ARES program and, thus, addresses the ARES 2010 goals of 50% thermal efficiency (fuel efficiency) and engines are being pursued. Approaches include: stoichiometric engine operation with exhaust gas recirculation and three-way catalysis, advanced combustion modes such as homogeneous charge compression ignition, and extension of the lean combustion limit with advanced ignition concepts and/or hydrogen mixing. The research presented here addresses the technical approach of combining efficient lean spark-ignited natural gas combustion with low emissions obtained from a lean NOx trap catalyst aftertreatment system. This approach can be applied to current lean engine technology or advanced lean engines that may result from related efforts in lean limit extension. Furthermore, the lean NOx trap technology has synergy with hydrogen-assisted lean limit extension since hydrogen is produced from natural gas during the lean NOx trap catalyst system process. The approach is also applicable to other lean engines such as diesel engines, natural gas turbines, and lean gasoline engines; other research activities have focused on those applications. Some commercialization of the technology has occurred for automotive applications (both diesel and lean gasoline engine vehicles) and natural gas turbines for stationary power. The research here specifically addresses barriers to commercialization of the technology for large lean natural gas reciprocating engines for stationary power. The report presented here is a comprehensive collection of research conducted by Oak Ridge National Laboratory (ORNL) on lean NOx trap catalysis for lean natural gas reciprocating engines. The research was performed in the Department of Energy's ARES program from 2003 to 2007 and covers several aspects of the technology. All studies were conducted at ORNL on a Cummins C8.3G+ natural gas engine chosen based on industry input to simulate large lean natural gas engines. Specific technical areas addressed by the research include: NOx reduction efficiency, partial oxidation and reforming chemistry, and the effects of sulfur poisons on the partial oxidation

Parks, II, James E [ORNL; Storey, John Morse [ORNL; Theiss, Timothy J [ORNL; Ponnusamy, Senthil [ORNL; Ferguson, Harley Douglas [ORNL; Williams, Aaron M [ORNL; Tassitano, James B [ORNL

2007-09-01T23:59:59.000Z

304

Lean NOx Trap Catalysis for Lean Natural Gas Engine Applications  

DOE Green Energy (OSTI)

Distributed energy is an approach for meeting energy needs that has several advantages. Distributed energy improves energy security during natural disasters or terrorist actions, improves transmission grid reliability by reducing grid load, and enhances power quality through voltage support and reactive power. In addition, distributed energy can be efficient since transmission losses are minimized. One prime mover for distributed energy is the natural gas reciprocating engine generator set. Natural gas reciprocating engines are flexible and scalable solutions for many distributed energy needs. The engines can be run continuously or occasionally as peak demand requires, and their operation and maintenance is straightforward. Furthermore, system efficiencies can be maximized when natural gas reciprocating engines are combined with thermal energy recovery for cooling, heating, and power applications. Expansion of natural gas reciprocating engines for distributed energy is dependent on several factors, but two prominent factors are efficiency and emissions. Efficiencies must be high enough to enable low operating costs, and emissions must be low enough to permit significant operation hours, especially in non-attainment areas where emissions are stringently regulated. To address these issues the U.S. Department of Energy and the California Energy Commission launched research and development programs called Advanced Reciprocating Engine Systems (ARES) and Advanced Reciprocating Internal Combustion Engines (ARICE), respectively. Fuel efficiency and low emissions are two primary goals of these programs. The work presented here was funded by the ARES program and, thus, addresses the ARES 2010 goals of 50% thermal efficiency (fuel efficiency) and <0.1 g/bhp-hr emissions of oxides of nitrogen (NOx). A summary of the goals for the ARES program is given in Table 1-1. ARICE 2007 goals are 45% thermal efficiency and <0.015 g/bhp-hr NOx. Several approaches for improving the efficiency and emissions of natural gas reciprocating engines are being pursued. Approaches include: stoichiometric engine operation with exhaust gas recirculation and three-way catalysis, advanced combustion modes such as homogeneous charge compression ignition, and extension of the lean combustion limit with advanced ignition concepts and/or hydrogen mixing. The research presented here addresses the technical approach of combining efficient lean spark-ignited natural gas combustion with low emissions obtained from a lean NOx trap catalyst aftertreatment system. This approach can be applied to current lean engine technology or advanced lean engines that may result from related efforts in lean limit extension. Furthermore, the lean NOx trap technology has synergy with hydrogen-assisted lean limit extension since hydrogen is produced from natural gas during the lean NOx trap catalyst system process. The approach is also applicable to other lean engines such as diesel engines, natural gas turbines, and lean gasoline engines; other research activities have focused on those applications. Some commercialization of the technology has occurred for automotive applications (both diesel and lean gasoline engine vehicles) and natural gas turbines for stationary power. The research here specifically addresses barriers to commercialization of the technology for large lean natural gas reciprocating engines for stationary power. The report presented here is a comprehensive collection of research conducted by Oak Ridge National Laboratory (ORNL) on lean NOx trap catalysis for lean natural gas reciprocating engines. The research was performed in the Department of Energy's ARES program from 2003 to 2007 and covers several aspects of the technology. All studies were conducted at ORNL on a Cummins C8.3G+ natural gas engine chosen based on industry input to simulate large lean natural gas engines. Specific technical areas addressed by the research include: NOx reduction efficiency, partial oxidation and reforming chemistry, and the effects of sulfur poisons on the partial oxidation

Parks, II, James E [ORNL; Storey, John Morse [ORNL; Theiss, Timothy J [ORNL; Ponnusamy, Senthil [ORNL; Ferguson, Harley Douglas [ORNL; Williams, Aaron M [ORNL; Tassitano, James B [ORNL

2007-09-01T23:59:59.000Z

305

Analysis of electron dynamics in non-ideal Penning traps  

Science Conference Proceedings (OSTI)

Penning traps that are used for particular applications, such as in ion pump technology, Larmor, bouncing, and diocotron frequencies, can be of the same order of magnitude. The paper deals with the dynamics of electrons confined in such devices starting from the study of the properties of the trajectories. In cases of interest, in which electron-neutral collision frequency is much smaller with respect to the characteristic frequencies of the motion, suitable time averages of the trajectories are introduced in order to simplify the analysis of the problem. In the work, time averages have been calculated in a simple way by using an approximate r-z decoupling of the effective potential. Results obtained with the method are presented and discussed in both linear and nonlinear regimes.

Coppa, G.; Mulas, R. [Dipartimento Energia, Politecnico di Torino, 10129 Torino (Italy); D'Angola, A. [Dipartimento di Ingegneria e Fisica dell'Ambiente, Universita della Basilicata, 85100 Potenza (Italy)

2012-06-15T23:59:59.000Z

306

Lean Gasoline Engine Reductant Chemistry During Lean NOx Trap Regeneration  

Science Conference Proceedings (OSTI)

Lean NOx Trap (LNT) catalysts can effectively reduce NOx from lean engine exhaust. Significant research for LNTs in diesel engine applications has been performed and has led to commercialization of the technology. For lean gasoline engine applications, advanced direct injection engines have led to a renewed interest in the potential for lean gasoline vehicles and, thereby, a renewed demand for lean NOx control. To understand the gasoline-based reductant chemistry during regeneration, a BMW lean gasoline vehicle has been studied on a chassis dynamometer. Exhaust samples were collected and analyzed for key reductant species such as H2, CO, NH3, and hydrocarbons during transient drive cycles. The relation of the reductant species to LNT performance will be discussed. Furthermore, the challenges of NOx storage in the lean gasoline application are reviewed.

Choi, Jae-Soon [ORNL; Prikhodko, Vitaly Y [ORNL; Partridge Jr, William P [ORNL; Parks, II, James E [ORNL; Norman, Kevin M [ORNL; Huff, Shean P [ORNL; Chambon, Paul H [ORNL; Thomas, John F [ORNL

2010-01-01T23:59:59.000Z

307

Surface Enhanced Raman Spectroscopy of Pyridine on CdSe/ZnBeSe Quantum Dots Grown by MBE  

SciTech Connect

Using Surface Enhanced Raman Spectroscopy (SERS), we observed Raman enhancements (104-105) for pyridine molecules adsorbed on a II-VI semiconductor CdSe/ZnBeSe sample of uncapped self-assembled quantum dots produced by molecular beam epitaxy. When a monolayer of pyridine is adsorbed on these structures, excitation at 488 nm produces intense Raman spectra a very large enhancement of the a1, b1 and b2 modes. This indicates the presence of charge-transfer as a contributor to the enhacement.

Livingstone, Richard [City College of New York, New York, NY (United States)

2010-08-06T23:59:59.000Z

308

Direct-energy-regenerated particulate trap technology. Final report  

DOE Green Energy (OSTI)

The objective of this CRADA between Lockheed Martin and Cummins Engine Company was to develop fiber-reinforced silicon carbide (SiC) composite materials for use as diesel engine particulate traps. Chemical vapor deposition techniques were used to partially densify and rigidize a thin fibrous substrate and produce the porous SiC- based filter. Microwave energy was used to directly couple to the deposited SiC to uniformly heat the filter and oxidize the collected carbon particulates. For commercial usage particulate traps must: (1) filter carbon particulates from a high temperature diesel exhaust at an acceptably low backpressure, (2) survive thousands of thermal transients due to regeneration or cleaning of the filter by oxidizing the collected carbon, (3) be durable and reliable over the expected life of the filter (300,000 miles or 10,000 hours), and (4) provide a low overall operating cost which is competitive with other filtering techniques. The development efforts performed as part of this CRADA have resulted in a very promising new technology for Cummins Engine Company. Ceramic fiber based filter papers were developed at Fleetguard, Inc., (a Cummins Subsidiary) and used to produce the spiral wound, corrugated filter cartridges. Optimized SiC coatings were developed at Lockheed Martin which couple with 2.45 GHz microwaves. Prototype particulate filter cartridges fabricated at Fleetguard and rigidized at Lockheed Martin performed well in single cylinder engine tests at Cummins. These prototype filters obtained filtering efficiencies greater than 80% at acceptably low backpressures and could be successfully headed and regenerated using a conventional in-home microwave oven.

Stinton, D.P.; Janney, M.A. [Oak Ridge National Lab., TN (United States); Yonushonis, T.M.; McDonald, A.C.; Wiczynski, P.D. [Cummins Engine Co., Inc., Columbus, IN (United States); Haberkamp, W.C. [Fleetguard, Inc. (United States)

1996-12-01T23:59:59.000Z

309

Ion Trapping for Ion Mobility Spectrometry Measurements in a Cyclical Drift Tube  

E-Print Network (OSTI)

us to consider new types of mobility measurements. In traditional IMS instruments, R scales as (ELIon Trapping for Ion Mobility Spectrometry Measurements in a Cyclical Drift Tube Rebecca S. Glaskin 47405, United States ABSTRACT: A new ion trapping technique, involving the accumulation of ions

Clemmer, David E.

310

Synoptic-Scale Structure and the Character of Coastally Trapped Wind Reversals  

Science Conference Proceedings (OSTI)

Coastally trapped wind reversals that occur along the U.S. West Coast have been described in numerous other studies. The synoptic-scale environment and the forcing of a coastally trapped Kelvin wave are highly linked in the development of these ...

Wendell A. Nuss

2007-01-01T23:59:59.000Z

311

Physica Scripta. Vol. T22, 228-237, 1988. Summary of the Physics in Traps Panel  

E-Print Network (OSTI)

astrophysics, potential condensed matter experiments, and new ideas for optical and magnetic traps for neutral measured [7] their mass difference in a commercial spec- trometer (with cubic trap) to % 1 part in IO4dependence of the correction terms, one can clearly see the advantage of performing the experi- ment

California at San Diego, University of

312

Charge trapping in ultrathin Gd2O3 high-k dielectric  

Science Conference Proceedings (OSTI)

Charge trapping in ultrathin high-k Gd"2O"3 dielectric leading to appearance of hysteresis in C-V curves is studied by capacitance-voltage and current-voltage techniques. It was shown that the large leakage current at a negative gate voltage causes the ... Keywords: Charge trapping, Gd2O3, High-k dielectric, Rare earth oxide

A. N. Nazarov; Y. V. Gomeniuk; Y. Y. Gomeniuk; H. D. B. Gottlob; M. Schmidt; M. C. Lemme; M. Czernohorsky; H. J. Osten

2007-09-01T23:59:59.000Z

313

Generation of continuous variable squeezing and entanglement of trapped ions in time-varying potentials  

Science Conference Proceedings (OSTI)

We investigate the generation of squeezing and entanglement for the motional degrees of freedom of ions in linear traps, confined by time-varying and oscillating potentials, comprised of a DC and an AC component. We show that high degrees of squeezing ... Keywords: 03.67.Bg, 05.45.Xt, 37.10.Vz, 42.50.Dv, Control, Entanglement, Ion traps

Alessio Serafini; Alex Retzker; Martin B. Plenio

2009-12-01T23:59:59.000Z

314

Loading of a surface-electrode ion trap from a remote, precooled source  

E-Print Network (OSTI)

We demonstrate loading of ions into a surface-electrode trap (SET) from a remote, laser-cooled source of neutral atoms. We first cool and load ?10[superscript 6] neutral [superscript 88]Sr atoms into a magneto-optical trap ...

Sage, Jeremy M.

315

Hybrid particle traps and conditioning procedure for gas insulated transmission lines  

DOE Patents (OSTI)

A gas insulated transmission line includes an outer sheath, an inner condor within the outer sheath, insulating supports supporting the inner conductor within the outer sheath, and an insulating gas electrically insulating the inner conductor from the outer sheath. An apertured particle trapping ring is disposed within the outer sheath, and the trapping ring has a pair of dielectric members secured at each longitudinal end thereof, with the dielectric members extending outwardly from the trapping ring along an arc. A support sheet having an adhesive coating thereon is secured to the trapping ring and disposed on the outer sheath within the low field region formed between the trapping ring and the outer sheath. A conditioning method used to condition the transmission line prior to activation in service comprises applying an AC voltage to the inner conductor in a plurality of voltage-time steps, with the voltage-time steps increasing in voltage magnitude while decreasing in time duration.

Dale, Steinar J. (Monroeville, PA); Cookson, Alan H. (Churchill, PA)

1982-01-01T23:59:59.000Z

316

A Novel Method for Fundamental Interaction Studies with Electrostatic Ion Beam Trap  

E-Print Network (OSTI)

Trapped radioactive atoms present exciting opportunities for the study of fundamental interactions and symmetries. For example, detecting beta decay in a trap can probe the minute experimental signal that originates from possible tensor or scalar terms in the weak interaction. Such scalar or tensor terms affect, e.g., the angular correlation between a neutrino and an electron in the beta-decay process, thus probing new physics of "beyond-the-standard-model" nature. In particular, this article focuses on a novel use of an innovative ion trapping device, the Electrostatic Ion Beam Trap (EIBT). Such a trap has not been previously considered for Fundamental Interaction studies and exhibits potentially very significant advantages over other schemes. These advantages include improved injection efficiency of the radionuclide under study, an extended field-free region, ion-beam kinematics for better efficiency and ease-of-operation and the potential for a much larger solid angle for the electron and recoiling atom counters.

S. Vaintraub; M. Hass; O. Aviv; O. Heber; I. Mardor

2010-05-22T23:59:59.000Z

317

File:EIA-PSJ-SE-GAS.pdf | Open Energy Information  

Open Energy Info (EERE)

PSJ-SE-GAS.pdf PSJ-SE-GAS.pdf Jump to: navigation, search File File history File usage Paradox-San Juan Basin, Southeast Part By 2001 Gas Reserve Class Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution ‎(5,100 × 6,600 pixels, file size: 13.13 MB, MIME type: application/pdf) Description Paradox-San Juan Basin, Southeast Part By 2001 Gas Reserve Class Sources Energy Information Administration Authors Samuel H. Limerick; Lucy Luo; Gary Long; David F. Morehouse; Jack Perrin; Robert F. King Related Technologies Oil, Natural Gas Creation Date 2005-09-01 Extent Regional Countries United States UN Region Northern America States Utah, Colorado, New Mexico, Arizona File history Click on a date/time to view the file as it appeared at that time.

318

Haier: Noncompliance Determination (2011-SE-1408) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

08) 08) Haier: Noncompliance Determination (2011-SE-1408) October 18, 2011 DOE issued a Notice of Noncompliance Determination to Haier America Trading, L.L.C. finding that model number HNCM070, a chest freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Haier must immediately notify each person (or company) to whom Haier distributed the noncompliant products that the product does not meet Federal standards. In addition, Haier must provide to DOE documents and records showing the number of units Haier distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Haier: Noncompliance Determination (2011-SE-1408) More Documents & Publications

319

Advanced Distributor Products: Noncompliance Determination (2010-SE-0304) |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Advanced Distributor Products: Noncompliance Determination Advanced Distributor Products: Noncompliance Determination (2010-SE-0304) Advanced Distributor Products: Noncompliance Determination (2010-SE-0304) May 28, 2010 DOE issued a Notice of Noncompliance Determination to Advanced Distributor Products finding that basic model N2H348A(G)KB* + H,GE50560 + *8MPV125 and basic model N2H360A(G)KB* + H,GE50560 + MV16J22**B* do not comport with the energy conservation standards. DOE determined the products were noncompliant based on ADP's certification. ADP must immediately notify each person (or company) to whom ADP distributed the noncompliant products that the product does not meet Federal standards. In addition, ADP must provide to DOE documents and records showing the number of units ADP distributed and to whom. The manufacturer and/or private labeler of the

320

Localizing Micro-grids Research for the SE Asian Region  

NLE Websites -- All DOE Office Websites (Extended Search)

Localizing Micro-grids Research for the SE Asian Region Localizing Micro-grids Research for the SE Asian Region Speaker(s): Cheng-Guan (Michael) Quah Valerie Choy Date: December 3, 2010 - 12:00pm Location: 90-3122 This presentation discusses developments (and test-beds) of micro-grids and distributed generation systems that are on-going in Singapore and poses the question as to whether simpler versions of such systems would be applicable to meet the challenges of rural electrification and energy poverty particularly those of its closest neighbors. Southeast Asia is an ethnically and culturally diverse region comprising more than 10 nations where 160 million people still live without electricity. Off-grid electrification for rural village communities and eco-resorts using DG and micro-grid systems are conceivable but many technical, political, cultural

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321

Haier: Noncompliance Determination (2011-SE-1428) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

28) 28) Haier: Noncompliance Determination (2011-SE-1428) April 23, 2013 DOE issued a Notice of Noncompliance Determination to Haier America Trading, LLC finding that Haier model HMCM106EA, a freezer, does not comport with the energy conservation standards. DOE determined the product was noncompliant based on DOE testing. Haier must immediately notify each person (or company) to whom Haier distributed the noncompliant products that the product does not meet Federal standards. In addition, Haier must provide to DOE documents and records showing the number of units Haier distributed and to whom. The manufacturer and/or private labeler of the product may be subject to civil penalties. Haier: Noncompliance Determination (2011-SE-1428) More Documents & Publications

322

File:EIA-PSJ-SE-BOE.pdf | Open Energy Information  

Open Energy Info (EERE)

SE-BOE.pdf SE-BOE.pdf Jump to: navigation, search File File history File usage Paradox-San Juan Basin, Southeast Part By 2001 BOE Reserve Class Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution ‎(5,100 × 6,600 pixels, file size: 13.15 MB, MIME type: application/pdf) Description Paradox-San Juan Basin, Southeast Part By 2001 BOE Reserve Class Sources Energy Information Administration Authors Samuel H. Limerick; Lucy Luo; Gary Long; David F. Morehouse; Jack Perrin; Robert F. King Related Technologies Oil, Natural Gas Creation Date 2005-09-01 Extent Regional Countries United States UN Region Northern America States Utah, Colorado, New Mexico, Arizona File history Click on a date/time to view the file as it appeared at that time.

323

A Se-mash Hit | Data.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

A Se-mash Hit A Se-mash Hit Developer Data Web Services Source Code Challenges Semantic Web Blogs Let's Talk Developers You are here Data.gov » Communities » Developers A Se-mash Hit Submitted by Data.gov Administrator on Tue, 12/18/2012 - 6:11pm Data.gov Mash-A-Thon 1 builds Web 3.0 apps and enthusiasm A lecture by Professor Jim Hendler at the Data.gov Mash-a-Thon 2010 For two days in August, a classroom in Washington, D.C.'s Dupont Circle filled with Federal developers, students and semantic web experts. They shared one purpose: to create a new generation of "linked-data" applications called "mashups" that use Data.gov's free public data in new and innovative ways. The U.S. government is in the vanguard of understanding and using the semantic web, which will transform the World Wide Web. Data will "talk" to one another,

324

Kinetics of Ge-Se-In Film Growth  

SciTech Connect

The processes of vacuum evaporation and condensation in the Ge-Se-In system were investigated. Thin amorphous films were deposited by modified thermal evaporation from previously synthesized non-crystalline (GeSe{sub y}){sub 1-x}In{sub x} ingots, where x = 0, 5, 10, 15, 20 and y = 4, 5 and 6. The specific evaporation rate was determined by measuring of the mass of evaporator before evaporation and the mass of empty evaporator after evaporation in temperature range of evaporation (500-800) K. The substrate temperature was varied in the range (300-430) K to study the condensation process and specific condensation rate was determined by measuring of the substrate mass before and after condensation. The condensation energy of the (GeSe{sub y}){sub 1-x}In{sub x} layers steady increases at indium addition.The thin films studied by transmission electron microscopy (TEM) and electron microdiffraction (EMD) reveal homogeneous and amorphous structure. The layer composition determined by Auger electron spectroscopy is close to that of the corresponded bulk samples.

Stoilova, A.; Petkov, P.; Nedeva, Y. [Department of Physics, University of Chemical Technology and Metallurgy, 1756 Sofia (Bulgaria); Monchev, B. [Institute of Electrochemistry and Energy Systems, BAS, 1113 Sofia (Bulgaria)

2010-01-21T23:59:59.000Z

325

Bose-Einstein condensation in dark power-law laser traps  

Science Conference Proceedings (OSTI)

We investigate theoretically an original route to achieve Bose-Einstein condensation using dark power-law laser traps. We propose to create such traps with two crossing blue-detuned Laguerre-Gaussian optical beams. Controlling their azimuthal order l allows for the exploration of a multitude of power-law trapping situations in one, two, and three dimensions, ranging from the usual harmonic trap to an almost square-well potential, in which a quasihomogeneous Bose gas can be formed. The usual cigar-shaped and disk-shaped Bose-Einstein condensates obtained in a 1D or 2D harmonic trap take the generic form of a 'finger' or of a 'hockey puck' in such Laguerre-Gaussian traps. In addition, for a fixed atom number, higher transition temperatures are obtained in such configurations when compared with a harmonic trap of the same volume. This effect, which results in a substantial acceleration of the condensation dynamics, requires a better but still reasonable focusing of the Laguerre-Gaussian beams.

Jaouadi, A. [Universite Paris-Sud, Institut des Sciences Moleculaires d'Orsay (ISMO), F-91405 Orsay (France); CNRS, Orsay, F-91405 France (France); Laboratoire de Spectroscopie Atomique, Moleculaire et Applications (LSAMA), Department of Physics, Faculty of Science of Tunis, University of Tunis El Manar, T-2092 Tunis (Tunisia); Gaaloul, N. [Institut fuer Quantenoptik, Welfengarten 1, Gottfried Wilhelm Leibniz Universitaet, D-30167 Hannover (Germany); Viaris de Lesegno, B.; Pruvost, L. [CNRS, Laboratoire Aime Cotton (LAC), F-91405 Orsay (France); Universite Paris-Sud, Orsay, F-91405 France (France); Telmini, M. [Laboratoire de Spectroscopie Atomique, Moleculaire et Applications (LSAMA), Department of Physics, Faculty of Science of Tunis, University of Tunis El Manar, T-2092 Tunis (Tunisia); Charron, E. [Universite Paris-Sud, Institut des Sciences Moleculaires d'Orsay (ISMO), F-91405 Orsay (France); CNRS, Orsay, F-91405 (France)

2010-08-15T23:59:59.000Z

326

Long-term drifts of stray electric fields in a Paul trap  

E-Print Network (OSTI)

We investigate the evolution of quasi-static stray electric fields in a linear Paul trap over a period of several months. Depending on how these electric fields are initially induced we observe very different time scales for the field drifts. Photo-induced electric fields decay on time scales of days. We interpret this as photo-electrically generated charges on insulating materials which decay via discharge currents. In contrast, stray fields due to the exposure of the ion trap to a beam of Ba atoms mainly exhibit slow dynamics on the order of months. We explain this observation as a consequence of a coating of the trap electrodes by the atomic beam. This may lead to contact potentials which can slowly drift over time due to atomic diffusion and chemical processes on the surface. In order not to perturb the field evolutions, we suppress the generation of additional charges and atomic coatings in the Paul trap during the measurements. For this, we shield the ion trap from ambient light and only allow the use of near-infrared lasers. Furthermore, we minimize the flux of atoms into the ion trap chamber. Long-term operation of our shielded trap led us to a regime of very low residual electric field drifts of less than 0.03 V/m per day.

Arne Hrter; Artjom Krkow; Andreas Brunner; Johannes Hecker Denschlag

2013-05-29T23:59:59.000Z

327

Long-term drifts of stray electric fields in a Paul trap  

E-Print Network (OSTI)

We investigate the evolution of stray electric fields in a linear Paul trap over a period of several months. We demonstrate a way to clearly distinguish between the two main sources of these fields, namely insulated charged up patches and patch charges originating from contact potentials. To achieve high sensitivity in these measurements, we operate the trap in a way that strongly suppresses the generation of additional patch charges. For this, we shield the ion trap from ambient light and only allow the use of near-infrared lasers. Furthermore, we minimize additional contaminations of the trap electrodes by minimizing the flux of atoms into the ion trap chamber. We find that photo-induced electric fields decay on time scales of days. In contrast, stray fields due to contamination-induced contact potentials on trap electrodes mainly exhibit slow dynamics on the order of months, probably dominated by diffusion and slow chemical processes. Long-term operation of our shielded trap led us to a regime of very low ...

Hrter, Arne; Brunner, Andreas; Denschlag, Johannes Hecker

2013-01-01T23:59:59.000Z

328

Testing quantum physics in space using optically trapped nanospheres  

E-Print Network (OSTI)

Recent developments in space technology like micro-propulsion systems for drag-free control, thermal shielding, ultra-stable laser sources and stable optical cavities set an ideal platform for quantum optomechanical experiments with optically trapped dielectric spheres. Here, we will provide an overview of the results of recent studies aiming at the realization of the space mission MAQRO to test the foundations of quantum physics in a parameter regime orders of magnitude beyond existing experiments. In particular, we will discuss DECIDE, which is an experiment to prepare and then study a Schr\\"odinger-cat-type state, where a dielectric nanosphere of around 100nm radius is prepared in a superposition of being in two clearly distinct positions at the same time. This superposition leads to double-slit-type interference, and the visibility of the interference pattern will be compared to the predictions of quantum theory. This approach allows for testing for possible deviations from quantum theory as our test objects approach macroscopic dimensions. With DECIDE, it will be possible to distinctly test several prominent theoretical models that predict such deviations, for example: the Di\\'osi-Pensrose model, the continuous-spontaneous-localization model of Ghirardi, Rimini, Weber and Pearle, and the model of K\\'arolyh\\'azy.

Rainer Kaltenbaek

2013-07-26T23:59:59.000Z

329

Operation of the Lower Granite Dam Adult Trap, 2008.  

DOE Green Energy (OSTI)

During 2008 we operated the adult salmonid trap at Lower Granite Dam from 7 March through 25 November, except during a short summer period when water temperatures were too high to safely handle fish. We collected and handled a total of 20,463 steelhead Oncorhynchus mykiss and radio-tagged 34 of the hatchery steelhead. We took scale samples from 3,724 spring/summer Chinook salmon O. tshawytscha for age and genetic analysis. We collected and handled a total of 8,254 fall Chinook salmon. Of those fish, 2,520 adults and 942 jacks were transported to Lyons Ferry Hatchery on the Snake River in Washington. In addition, 961 adults and 107 jacks were transported to the Nez Perce Tribal Hatchery on the Clearwater River in Idaho. The remaining 3,724 fall Chinook salmon were passed upstream. Scales samples were taken from 780 fall Chinook salmon tagged with passive integrated transponder (PIT) tags and collected by the sort-by-code system.

Harmon, Jerrel R.

2009-01-01T23:59:59.000Z

330

Dynamics of Methane Trapped in C(60) Interstices  

SciTech Connect

In order to understand the hindered rotational and vibrational dynamics of methane trapped in C{sub 60} interstices and to determine the structure around the interstitial site, they have carried out inelastic neutron scattering studies of the methane/C{sub 60} system. At temperatures of 20K and below, they observe inelastic peaks from rotational transitions of the CH{sub 4}. These transitions allow unambiguous assignment of the hindered rotational energy levels and a determination of the interaction potential. The appearance of two peaks for one of the J = 0{r_arrow}3 transitions implies the existence of two distinct kinds of interstitial sites and the measured transition energies suggest a rotational barrier of about 26 and 16 meV for these sites. Time-dependent changes in peak heights indicate slow t{sub 1/2} ({approx} 2.6 hrs) triplet{r_arrow}quintet nuclear spin conversion that necessarily accompanies the J = 1{r_arrow}0 rotational relaxation. They also have observed a sharp inelastic peak at 9.3 meV, which corresponds to a local vibrational mode of CH{sub 4} rattling in its cage at {approximately} 2.2 THz. Other peaks involving higher-energy vibrational excitations in CD{sub 4}/C{sub 60} correspond in energy to assigned peaks in the inelastic neutron scattering spectra of C{sub 60}, albeit sometimes with different intensities.

KING, HARRY F.; KWEI, GEORGE H.; MOROSIN, BRUNO; TROUW, FRANS

1999-09-01T23:59:59.000Z

331

Particle trap for compressed gas insulated transmission systems  

DOE Patents (OSTI)

A particle trap is provided for gas insulated transmission lines having a central high voltage conductor supported within an outer coaxial conductive sheath by a dielectric support member. A cavity between the inner conductor and outer sheath is filled with a dielectric insulating gas. A cone-like particle deflector, mounted to the inner conductor, deflects moving particles away from the support member, to radially outer portions of the cavity. A conductive shield is disposed adjacent the outer sheath to form a field-free region in radially outer portions of the cavity, between the shield and the sheath. Particles traveling along the cavity are deflected by the cone-like deflector into the field-free region where they are held immobile. In a vertical embodiment, particles enter the field-free region through an upper end of a gap formed between shield and sheath members. In a horizontal embodiment, the deflector cone has a base which is terminated radially internally of the shield. Apertures in the shield located adjacent the deflector allow passage of deflected particles into the field-free region. The dielectric support member is thereby protected from contaminating particles that may otherwise come to rest thereon.

Cookson, Alan H. (Pittsburgh, PA)

1985-01-01T23:59:59.000Z

332

Particle trap for compressed gas insulated transmission systems  

DOE Patents (OSTI)

A particle trap is provided for gas insulated transmission lines having a central high voltage conductor supported within an outer coaxial conductive sheath by a dielectric support member. A cavity between the inner conductor and outer sheath is filled with a dielectric insulating gas. A cone-like particle deflector, mounted to the inner conductor, deflects moving particles away from the support member, to radially outer portions of the cavity. A conductive shield is disposed adjacent the outer sheath to form a field-free region in radially outer portions of the cavity, between the shield and the sheath. Particles traveling along the cavity are deflected by the cone-like deflector into the field-free region where they are held immobile. In a vertical embodiment, particles enter the field-free region through an upper end of a gap formed between shield and sheath members. In a horizontal embodiment, the deflector cone has a base which is terminated radially internally of the shield. Apertures in the shield located adjacent the deflector allow passage of deflected particles into the field-free region. The dielectric support member is thereby protected from contaminating particles that may otherwise come to rest thereon.

Cookson, A.H.

1984-04-26T23:59:59.000Z

333

Certification Framework Based on Effective Trapping for Geologic Carbon Sequestration  

SciTech Connect

We have developed a certification framework (CF) for certifying the safety and effectiveness of geologic carbon sequestration (GCS) sites. Safety and effectiveness are achieved if CO{sub 2} and displaced brine have no significant impact on humans, other living things, resources, or the environment. In the CF, we relate effective trapping to CO{sub 2} leakage risk which takes into account both the impact and probability of leakage. We achieve simplicity in the CF by using (1) wells and faults as the potential leakage pathways, (2) compartments to represent environmental resources that may be impacted by leakage, (3) CO{sub 2} fluxes and concentrations in the compartments as proxies for impact to vulnerable entities, (4) broad ranges of storage formation properties to generate a catalog of simulated plume movements, and (5) probabilities of intersection of the CO{sub 2} plume with the conduits and compartments. We demonstrate the approach on a hypothetical GCS site in a Texas Gulf Coast saline formation. Through its generality and flexibility, the CF can contribute to the assessment of risk of CO{sub 2} and brine leakage as part of the certification process for licensing and permitting of GCS sites around the world regardless of the specific regulations in place in any given country.

Oldenburg, Curtis M.; Bryant, Steven L.; Nicot, Jean-Philippe

2009-01-15T23:59:59.000Z

334

Temperature-Driven Structural Phase Transition for Trapped Ions and a Proposal for its Experimental Detection  

SciTech Connect

A Wigner crystal formed with trapped ions can undergo a structural phase transition, which is determined only by the mechanical conditions on a classical level. Instead of this classical result, we show that through consideration of quantum and thermal fluctuation, a structural phase transition can be driven solely by a change in the system's temperature. We determine a finite-temperature phase diagram for trapped ions using the renormalization group method and the path integral formalism, and propose an experimental scheme to observe the predicted temperature-driven structural phase transition, which is well within the reach of the current ion trap technology.

Gong Zhexuan; Lin, G.-D.; Duan, L.-M. [Department of Physics and MCTP, University of Michigan, Ann Arbor, Michigan 48109 (United States)

2010-12-31T23:59:59.000Z

335

Method and apparatus for regenerating cold traps within liquid-metal systems  

DOE Patents (OSTI)

Oxide and hydride impurities of a liquid metal such as sodium are removed from a cold trap by heating to a temperature at which the metal hydroxide is stable in a molten state. The partial pressure of hydrogen within the system is measured to determine if excess hydride or oxide is present. Excess hydride is removed by venting hydrogen gas while excess oxide can be converted to molten hydroxide through the addition of hydrogen. The resulting, molten hydroxide is drained from the trap which is then returned to service at cold trap temperatures within the liquid-metal system.

McKee, Jr., John M. (Hinsdale, IL)

1976-01-01T23:59:59.000Z

336

TRImP - A new facility to produce and trap radioactive isotopes  

E-Print Network (OSTI)

At the Kernfysisch Vensneller Institiutr (KVI) in Groningen, NL, a new facility (TRImP) is under development. It aims for producing, slowing down, and trapping of radioactive isotopes in order to perform accurate measurements on fundamental symmetries and interactions. A production target station and a dual magnetic separator installed and commissioned. We will slow down the isotopes of interest using an ion catcher and in a further stage a radiofrequency quadropole gas cooler (RFQ). The isotopes will finally be trapped in an atomic trap for precision studies.

Sohani, M

2006-01-01T23:59:59.000Z

337

TRImP - A new facility to produce and trap radioactive isotopes  

E-Print Network (OSTI)

At the Kernfysisch Vensneller Institiutr (KVI) in Groningen, NL, a new facility (TRImP) is under development. It aims for producing, slowing down, and trapping of radioactive isotopes in order to perform accurate measurements on fundamental symmetries and interactions. A production target station and a dual magnetic separator installed and commissioned. We will slow down the isotopes of interest using an ion catcher and in a further stage a radiofrequency quadropole gas cooler (RFQ). The isotopes will finally be trapped in an atomic trap for precision studies.

M. Sohani

2006-01-17T23:59:59.000Z

338

Radial transport of energetic ions in the presence of trapped electron mode turbulence  

Science Conference Proceedings (OSTI)

The nature of transport of hot ions is studied in the presence of microturbulence generated by the trapped electron mode in a Tokamak using massively parallel, first principle based global nonlinear gyrokinetic simulation, and with the help of a passive tracer method. Passing and trapped hot ions are observed to exhibit inverse and inverse square scaling with energy, while those with isotropic pitch distribution are found to exhibit inverse dependence on energy. For all types of hot ions, namely, isotropic, passing, and trapped, the radial transport appears to be subdiffusive for the parameters considered.

Chowdhury, J.; Wang, W.; Ethier, S.; Manickam, J. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Ganesh, R. [Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

2011-11-15T23:59:59.000Z

339

Light Trapping for Thin Silicon Solar Cells by Femtosecond Laser Texturing: Preprint  

DOE Green Energy (OSTI)

Femtosecond laser texturing is used to create nano- to micron-scale surface roughness that strongly enhances light-trapping in thin crystalline silicon solar cells. Light trapping is crucial for thin solar cells where a single light-pass through the absorber is insufficient to capture the weakly absorbed red and near-infrared photons, especially with an indirect-gap semiconductor absorber layer such as crystalline Si which is less than 20 um thick. We achieve enhancement of the optical absorption from light-trapping that approaches the Yablonovitch limit.

Lee, B. G.; Lin, Y. T.; Sher, M. J.; Mazur, E.; Branz, H. M.

2012-06-01T23:59:59.000Z

340

Spectroscopy, photo-physics, and time resolved exciton dynamics of GaSe quantum dots  

E-Print Network (OSTI)

of Carrier Relaxation Dynamics in Type II CdSe/CdTe TetrapodHigh Quality Zinc Blende CdSe Nanocrystals, J. Phys. Chem.Shape Tuning of Type II CdTe-CdSe Colloidal Nanocrystal

Mirafzal, Hoda

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "hor se trap" 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

Shape dependence of band-edge exciton fine structure in CdSe nanocrystals  

E-Print Network (OSTI)

exciton fine structure in CdSe nanocrystals Qingzhong Zhao,fine structure of wurtzite CdSe nanocrystals is investigatedexciton fine structure of CdSe nanocrystals is determined by

Zhao, Qingzhong

2008-01-01T23:59:59.000Z

342

Strain-dependent photoluminescence behavior in three geometries of CdSe/CdS nanocrystals  

E-Print Network (OSTI)

X. et al. Shape control of CdSe nanocrystals. Nature 404,of nearly monodisperse CdSe/CdS core/shell nanocrystalsgrowth of highly luminescent CdSe/CdS nanoheterostructures

Choi, Charina L

2010-01-01T23:59:59.000Z

343

Investigation of Aging Mechanisms in Lean NOx Traps  

Science Conference Proceedings (OSTI)

Lean NO{sub x} traps (LNTs) represent a promising technology for the abatement of NO{sub x} under lean conditions. Although LNTs are starting to find commercial application, the issue of catalyst durability remains problematic. LNT susceptibility to sulfur poisoning is the single most important factor determining effective catalyst lifetime. The NO{sub x} storage element of the catalyst has a greater affinity for SO{sub 3} than it does for NO{sub 2}, and the resulting sulfate is more stable than the stored nitrate. Although this sulfate can be removed from the catalyst by means of high temperature treatment under rich conditions, the required conditions give rise to deactivation mechanisms such as precious metal sintering, total surface area loss, and solid state reactions between the various oxides present. The principle objective of this project was to improve understanding of the mechanisms of lean NO{sub x} trap aging, and to understand the effect of washcoat composition on catalyst aging characteristics. The approach utilized involved detailed characterization of model catalysts prior to and after aging, in tandem with measurement of catalyst performance in NO{sub x} storage and reduction. In this manner, NO{sub x} storage and reduction characteristics were correlated with the evolution of catalyst physico-chemical properties upon aging. Rather than using poorly characterized proprietary catalysts, or simple model catalysts of the Pt/BaO/Al{sub 2}O{sub 3} type (representing the first generation of LNTs), Pt/Rh/BaO/Al{sub 2}O{sub 3} catalysts were employed which also incorporated CeO{sub 2} or CeO{sub 2}-ZrO{sub 2}, representing a model system which more accurately reflects current LNT formulations. Catalysts were prepared in which the concentration of each of the main components was systematically varied: Pt (50, 75 or 100 g/ft{sup 3}), Rh (10 or 20 g/ft{sup 3}), BaO (15, 30 or 45 g/L), and either CeO{sub 2} (0, 50 or 100 g/L) or CeO{sub 2}-ZrO{sub 2} (0, 50 or 100 g/L). A high surface area La-stabilized alumina was used to support the BaO phase. Catalysts were obtained by washcoating onto standard cordierite substrates, the total washcoat loading being set at 260 g/L. La-stabilized alumina was used as the balance. Subsequent to de-greening, the NO{sub x} storage and reduction characteristics of the catalysts were evaluated on a bench reactor, after which the catalysts were aged on a bench reactor to the equivalent of ca. 75,000 miles of road aging using a published accelerated aging protocol. The aged catalysts were then subjected to the same evaluation proecdure used for the de-greened catalysts. In addition to the use of standard physico-chemical analytical techniques for studying the fresh and aged model catalysts, use was made of advanced analytical tools for characterizing their NO{sub x} storage/reduction and sulfation/desulfation characteristics, such as Spatially resolved capillary-inlet Mass Spectrometry (SpaciMS) and in situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS).

Mark Crocker

2010-03-31T23:59:59.000Z

344

Lean NOx Trap Modeling in Vehicle Systems Simulations  

DOE Green Energy (OSTI)

A one-dimensional model for simulating lean NOx trap (LNT) performance is developed and validated using both steady state cycling data and transient data from FTP testing cycles. The model consists of the conservation equations for chemical species and energy in the bulk flow, energy of the solid walls, O2 storage and NOx storage (in the form of nitrites and nitrates). Nitrites and nitrates are formed by diffusion of NO and NO2, respectively, into sorbent particles (assumed to be hemi-spherical in shape) along with O2 and their formation rates are controlled by chemical kinetics as well as solid-phase diffusion rates of NOx species. The model also accounts for thermal aging and sulfation of LNTs. Empirical correlations are developed on the basis of published experimental data to capture these effects. These empirical correlations depend on total mileage for which the LNT has been in use, the mileage accumulated since the last desulfation event in addition to the freshly degreened catalyst characteristics. The model has been used in studies of vehicle systems (integration, performance etc.) including hybrid powertrain configurations. Since the engines in hybrid vehicles turn on and off multiple number of times during single drive cycles, the exhaust systems may encounter multiple cold start transients. Accurate modeling of catalyst warm-up and cooling is, therefore, very important to simulate LNT performance in such vehicles. For this purpose, the convective heat loss from the LNT to the ambient is modeled using a Nusselt number correlation that includes effects of both forced convection and natural convection (with later being important when vehicle is stationary). Using the model, the fuel penalty associated with operating LNTs on small diesel engine powered car during FTP drive cycles is estimated.

Gao, Zhiming [ORNL; Chakravarthy, Veerathu K [ORNL; Daw, C Stuart [ORNL; Conklin, Jim [ORNL

2010-09-01T23:59:59.000Z

345

Triplet Transport to and Trapping by Acceptor End Groups on Conjugated  

NLE Websites -- All DOE Office Websites (Extended Search)

Triplet Transport to and Trapping by Acceptor End Groups on Conjugated Triplet Transport to and Trapping by Acceptor End Groups on Conjugated Polyfluorene Chains Paiboon Sreearunothai, Alexis Estrada, Sadayuki Asaoka, Marta Kowalczyk, Seogjoo Jang, Andrew R. Cook, Jack M. Preses and John R. Miller J. Phys. Chem. C 115, 19569-19577 (2011). [Find paper at ACS Publications] Abstract: Triplet excited states created in polyfluorene (pF) molecules having average lengths up to 170 repeat units were transported to and captured by trap groups at the ends in less ~40 ns. Almost all of the triplets attached to the chains reached the trap groups, ruling out the presence of substantial numbers of defects that prevent transport. The transport yields a diffusion coefficient D of at least 3 x 10-4 cm2 s-1, which is 30 times typical molecular diffusion and close to a value for triplet transport

346

Additional Steam Traps Increase Production of a Drum Oven at a Petroleum Jelly Plant  

Science Conference Proceedings (OSTI)

Additional steam traps were installed on the drum oven at a petroleum jelly production facility at an ExxonMobil plant in Nigeria. The installation improved heat transfer and saved energy.

Not Available

2002-03-01T23:59:59.000Z

347

Integrated photonic structures for light trapping in thin-film Si solar cells  

E-Print Network (OSTI)

We explore the mechanisms for an efficient light trapping structure for thin-film silicon solar cells. The design combines a distributed Bragg reflector (DBR) and periodic gratings. Using photonic band theories and numerical ...

Sheng, Xing

348

Scattering of Coastal-Trapped Waves by Irregularities in Coastline and Topography  

Science Conference Proceedings (OSTI)

The scattering of freely-propapting coastal-trapped waves (CTWs) by large variations in coastline and topography is studied using a numerical model which accomodates arbitrary density stratification, bathymetry and coastline. Particular attention ...

John L. Wilkin; David C. Chapman

1990-03-01T23:59:59.000Z

349

On the application of radio frequency voltages to ion traps via helical resonators  

E-Print Network (OSTI)

Ions confined using a Paul trap require a stable, high voltage and low noise radio frequency (RF) potential. We present a guide for the design and construction of a helical coil resonator for a desired frequency that maximises the quality factor for a set of experimental constraints. We provide an in-depth analysis of the system formed from a shielded helical coil and an ion trap by treating the system as a lumped element model. This allows us to predict the resonant frequency and quality factor in terms of the physical parameters of the resonator and the properties of the ion trap. We also compare theoretical predictions with experimental data for different resonators, and predict the voltage applied to the ion trap as a function of the Q-factor, input power and the properties of the resonant circuit.

Siverns, J D; Weidt, S; Hensinger, W K

2011-01-01T23:59:59.000Z

350

The Scattering of Long Coastal-Trapped Waves in Frictional Seas  

Science Conference Proceedings (OSTI)

The scattering of coastal-trapped waves (CTWs) by a region of irregular shelf bathymetry is determined from a circulation integral of the depth-integrated momentum equations. For relatively weak stratification the conservation of geostrophic mass ...

John F. Middleton; Mark A. Merrifield

1995-04-01T23:59:59.000Z

351

Bear Trap Hot Spring Pool & Spa Low Temperature Geothermal Facility | Open  

Open Energy Info (EERE)

Trap Hot Spring Pool & Spa Low Temperature Geothermal Facility Trap Hot Spring Pool & Spa Low Temperature Geothermal Facility Jump to: navigation, search Name Bear Trap Hot Spring Pool & Spa Low Temperature Geothermal Facility Facility Bear Trap Hot Spring Sector Geothermal energy Type Pool and Spa Location Norris, Montana Coordinates 45.5679836°, -111.690808° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[]}

352

Atom Trap Trace Analysis at ANL | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Atom Trap Trace Analysis at ANL Atom Trap Trace Analysis at ANL Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Spinoff Applications Spinoff Archives SBIR/STTR Applications of Nuclear Science and Technology Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: sc.np@science.doe.gov More Information » Spinoff Archives Atom Trap Trace Analysis at ANL Print Text Size: A A A RSS Feeds FeedbackShare Page Application/instrumentation: Atom Trap Trace Analysis (ATTA) to determine isotopic abundances. Developed at: Argonne National Laboratory Developed in: 1999-current

353

Effects of trap anisotropy on impurity scattering regime in a Fermi gas  

E-Print Network (OSTI)

We evaluate the low-lying oscillation modes and the ballistic expansion properties of a harmonically trapped gas of fermionic K40 atoms containing thermal Rb87 impurities as functions of the anisotropy of the trap. Numerical results are obtained by solving the Vlasov-Landau equations for the one-body phase-space distribution functions and are used to test simple scaling Ansatzes. Starting from the gas in a weak impurity-scattering regime inside a spherical trap, the time scales associated to motions in the axial and azimuthal directions enter into competition as the trap is deformed to an elongated cigar-like shape. This competition gives rise to coexistence of collisionless and hydrodynamic behaviors in the low-lying surface modes of the gas as well as to a dependence of the aspect ratio of the expanding cloud on the collision time.

P. Capuzzi; P. Vignolo; M. P. Tosi

2005-06-20T23:59:59.000Z

354

On the application of radio frequency voltages to ion traps via helical resonators  

E-Print Network (OSTI)

Ions confined using a Paul trap require a stable, high voltage and low noise radio frequency (RF) potential. We present a guide for the design and construction of a helical coil resonator for a desired frequency that maximises the quality factor for a set of experimental constraints. We provide an in-depth analysis of the system formed from a shielded helical coil and an ion trap by treating the system as a lumped element model. This allows us to predict the resonant frequency and quality factor in terms of the physical parameters of the resonator and the properties of the ion trap. We also compare theoretical predictions with experimental data for different resonators, and predict the voltage applied to the ion trap as a function of the Q-factor, input power and the properties of the resonant circuit.

J. D. Siverns; L. R. Simkins; S. Weidt; W. K. Hensinger

2011-06-24T23:59:59.000Z

355

Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky...  

NLE Websites -- All DOE Office Websites (Extended Search)

3, 2013 Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection Photo by J.D. Griggs, courtesy of U.S.Geological Survey Photo by J.D. Griggs, courtesy of...

356

An injection-locked 674 nm laser for Strontium-88 ion trapping  

E-Print Network (OSTI)

Energy levels of the valence electron of a single trapped ??Sr+ ion can be harnessed as an effective qubit for quantum information processing. The qubit transition to a metastable energy state can be stimulated by a laser ...

Katz, Rena J. (Rena Jenelle)

2012-01-01T23:59:59.000Z

357

A Comparison of Long Coastal Trapped Wave Theory with Observations off Peru  

Science Conference Proceedings (OSTI)

The agreement between coastal trapped wave theory and observation is studied for the case of observations made off Peru during the 1977 CUEA JOINT-II experiment. Wave properties are calculated using a numerical model with realistic, horizontally ...

K. H. Brink

1982-08-01T23:59:59.000Z

358

Synoptic Forcing Of Coastal-Trapped Disturbances in the Marine Atmospheric Boundary Layer  

Science Conference Proceedings (OSTI)

Motivated by recent observations along the west coast of the United States, the authors investigate the generation and propagation of coastal-trapped disturbances in the marine atmospheric boundary layer. Analytic solutions are obtained in a ...

A. M. Rogerson; R. M. Samelson

1995-06-01T23:59:59.000Z

359

Sensitivity of Coastally Trapped Disturbance Dynamics to Barrier Height and Topographic Variability in a Numerical Model  

Science Conference Proceedings (OSTI)

The sensitivity of a coastally trapped disturbance (CTD) to topographic height is examined using simulations of the 1518 May 1985 CTD. These simulations include three with uniform topography, in which the North American west coast mountains are ...

K. J. Tory; P. L. Jackson; C. J. C. Reason

2001-12-01T23:59:59.000Z

360

Scattering of Coastally Trapped Waves by Changes in Continental Shelf Width  

Science Conference Proceedings (OSTI)

The scattering of dispersive, barotropic, coastally-trapped waves by narrowing and widening shelves is investigated. The shelves considered maintain a shelf-similar exponential shape. For such shelves, previous investigators have shown that no ...

Ian Webster

1987-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "hor se trap" 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

Technological assessment of light-trapping technology for thin-film Si solar cell  

E-Print Network (OSTI)

The proposed light trapping technology of Distributed Bragg Reflector (DBR) with Diffraction Grating (DG) and Anti-Reflection Coating (ARC) for thin film Si solar cell was analyzed from the technology, market, and ...

Susantyoko, Rahmat Agung

2009-01-01T23:59:59.000Z

362

Depletion, quantum jumps, and temperature measurements of ??Sr? ions in a linear Paul Trap  

E-Print Network (OSTI)

This thesis describes the design and construction of two laser systems to probe the 674nm transition of ??Sr? ions in a linear Paul trap. The first laser system made use of a molecular transition in Iodine to stabilize the ...

Richerme, Philip J

2006-01-01T23:59:59.000Z

363

Mesoscale Eddy Formation and Shock Features Associated with a Coastally Trapped Disturbance  

Science Conference Proceedings (OSTI)

On 28 August 2002, a visually striking sequence of events appeared in satellite imagery showing a coastally trapped disturbance (CTD) propagating northward along the coast of California against a northerly background flow. As a narrow tongue of ...

Stephen D. Burk; William T. Thompson

2004-09-01T23:59:59.000Z

364

Vertically aligned gas-insulated transmission line having particle traps at the inner conductor  

DOE Patents (OSTI)

Gas insulated electrical apparatus having first and second conductors separated by an insulating support within an insulating gas environment, and particle traps disposed along the surface of the high potential conductor for trapping and inactivating foreign particles which may be present within the insulating gas medium. Several embodiments of the invention were developed which are particularly suited for vertically aligned gas insulated transmission lines. The particle traps are grooves or cavities formed into the walls of the tubular inner conductor, without extending into the hollow portion of the conductor. In other embodiments, the traps are appendages or insert flanges extending from the inner conductor, with the insulator supports contacting the appendages instead of the inner conductor.

Dale, Steinar J. (Monroeville, PA)

1984-01-01T23:59:59.000Z

365

A Modeling Study of Nonstationary Trapped Mountain Lee Waves. Part II: Nonlinearity  

Science Conference Proceedings (OSTI)

The generation of nonstationary trapped mountain lee waves through nonlinear wave dynamics without any concomitant change in the background flow is investigated by conducting two-dimensional mountain wave simulations. These simulations ...

Louisa B. Nance; Dale R. Durran

1998-04-01T23:59:59.000Z

366

Cessation of the 2225 June 2006 Coastally Trapped Wind Reversal  

Science Conference Proceedings (OSTI)

Coastally trapped wind reversals (CTWRs) occur periodically in the marine boundary layer off the western coast of the United States and dramatically change the low-level wind regime and coastal weather. Southerly flow becomes established with the ...

David A. Rahn; Thomas R. Parish

2010-07-01T23:59:59.000Z

367

Sea Surface Mixed Layer during the 1011 June 1994 California Coastally Trapped Event  

Science Conference Proceedings (OSTI)

A midlevel, coastally trapped atmospheric event occurred along the California coast 1011 June 1994. This feature reversed the surface wind field along the coast in a northerly phase progression. Along the central California coast, the winds at ...

C. E. Dorman; L. Armi; J. M. Bane; D. P. Rogers

1998-03-01T23:59:59.000Z

368

Molecular dynamics simulation of deuterium trapping and bubble formation in tungsten  

E-Print Network (OSTI)

Molecular dynamics simulation of deuterium trapping and bubble formation in tungsten Xue Yang using classical molecular dynamic methods. " Low energy deuterium atoms tend to affix to high environment. The deuterium bombardment of monocrystalline tungsten was modeled by molecular dynamics

Harilal, S. S.

369

Phenomenon of parametric trapping of electromagnetic waves in an inhomogeneous plasma  

SciTech Connect

A theory is developed of absolute parametric aperiodic instability in a spatially inhomogeneous plasma, when the electromagnetic waves generated in the plasma are trapped by the plasma near the peaks of the pumping-wave field.

Silin, V.P.; Starodub, A.N.

1977-10-01T23:59:59.000Z

370

Direct Calculation of Low-Frequency Coastally Trapped Waves and Their Scattering  

Science Conference Proceedings (OSTI)

A new, direct numerical method is proposed for finding the phase speeds and pressure fields of low-frequency nondispersive coastally trapped waves in a continuously stratified flow. The usual two-dimensional problem is reduced to a one-...

G. A. Schmidt; E. R. Johnson

1993-06-01T23:59:59.000Z

371

Coastal-Trapped Waves off the Coast of South Africa: Generation, Propagation and Current Structures  

Science Conference Proceedings (OSTI)

Coastal sea level variations from six sites around South Africa are used to establish the characteristics of coastal-trapped wave (CTW) propagation. Substantial amplitudes (>50 cm) are found along the south coast, but further propagation on the ...

E. H. Schumann; K. H. Brink

1990-08-01T23:59:59.000Z

372

Engineering optical traps for new environments and applications in the measurement of biological adhesives and motors  

E-Print Network (OSTI)

Optical traps have played a central role in the exploration of biological systems through the examination of molecular motors, biopolymers, and many other interactions at the nano and micro length scales. This thesis seeks ...

Appleyard, David Collins

2009-01-01T23:59:59.000Z

373

The Energy Source for the Coastal-Trapped Waves in the Australian Coastal Experiment Region  

Science Conference Proceedings (OSTI)

The sea level on the southern Australian coast is examined for the source of the coastal-trapped wave energy observed during the Australian Coastal Experiment. Sea level, adjusted for atmospheric pressure, and atmospheric pressure are observed to ...

John A. Church; Howard J. Freeland

1987-03-01T23:59:59.000Z

374

A Systematic Search for Trapped Equatorial Waves in the GATE Velocity Data  

Science Conference Proceedings (OSTI)

Moored current meter data taken over a 60-day period during GATE (GARP Atlantic Tropical Experiment) near the equator at 28W, have been systematically searched for vertically propagating equatorially trapped waves. Three independent tests ...

A. M. Horigan; R. H. Weisberg

1981-04-01T23:59:59.000Z

375

Numerical Simulation of Flow around a Tall Isolated Seamount. Part II: Resonant Generation of Trapped Waves  

Science Conference Proceedings (OSTI)

A sigma-coordinate, primitive equation ocean circulation model is used to explore the problem of the remnant generation of trapped waves about a tall, circular, isolated seamount by an incident oscillatory barotropic current. The numerical ...

Dale B. Haidvogel; Aike Beckmann; David C. Chapman; Ray-Qing Lin

1993-11-01T23:59:59.000Z

376

Light trapping in thin film solar cells using textured photonic crystal  

DOE Patents (OSTI)

A solar cell includes a photoactive region that receives light. A photonic crystal is coupled to the photoactive region, wherein the photonic crystal comprises a distributed Bragg reflector (DBR) for trapping the light.

Yi, Yasha (Somerville, MA); Kimerling, Lionel C. (Concord, MA); Duan, Xiaoman (Amesbury, MA); Zeng, Lirong (Cambridge, MA)

2009-01-27T23:59:59.000Z

377

Simple Models of Coastal-Trapped Waves Based on the Shape of the Bottom Topography  

Science Conference Proceedings (OSTI)

Solutions of barotropic coastal-trapped waves in the shallow-water context are discussed for different shapes of the bottom topography. In particular, an infinite family of topographic waves over continental shelves characterized by a shape ...

L. Zavala Sansn

2012-03-01T23:59:59.000Z

378

An optical-fiber interface to a trapped-ion quantum computer  

E-Print Network (OSTI)

The trapped-ion quantum computer is an atom-based implementation of a quantum computer that has successfully demonstrated numerous quantum algorithms and the potential for scalability. Fundamental to its operation is the ...

Kim, Tony Hyun

2011-01-01T23:59:59.000Z

379

An imaging co-axial tube electrodynamic trap for manipulation of charged particles  

Science Conference Proceedings (OSTI)

A tubular particle trapping device was designed and fabricated using two co-axial electrically conductive tubes with diameters of 5 mm and 7 mm, respectively. The device was integrated with an imaging camera and optical fiber bundle for real time monitoring of trapped particle motion. Charged microparticles of 3 to 50 m diameter can be suspended in air at ambient pressure using the device utilizing a quadrupole potential with an alternating voltage of amplitude 300 V to 750 V and frequency of 30 Hz to 140 Hz. Controlled trapping of a single particle or multiple particles can be achieved by tuning the voltage amplitude. The particle remained trapped when the entire assembly was translated or rotated. The device can be used as a manipulator for charged particle transport and repositioning.

Jiang, Ms. Linan [University of Arizona; Whitten, William B [ORNL; Pau, Dr. Stanley [University of Arizona/Bell Labs

2011-01-01T23:59:59.000Z

380

Dipole traps for neutral atoms formed by nonuniformly polarised Laguerre modes  

SciTech Connect

Field configurations of two counterpropagating nonuniformly polarised Laguerre modes forming three-dimensional dipole traps for neutral atoms are proposed. Peculiarities of the stochastic dynamics of atoms in such traps, associated with the anisotropy of dipole forces and manifestations of various radiative friction mechanisms are analysed. The problem of increasing the confinement time for atoms in such field configurations is studied. (laser applications and other topics in quantum electronics)

Bezverbny, Aleksandr V [Maritime State University, Vladivostok (Russian Federation); Niz'ev, Vladimir G [Institute on Laser and Information Technologies, Russian Academy of Sciences, Shatura, Moscow Region (Russian Federation); Tumaikin, Anatolii M [Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk (Russian Federation)

2004-07-31T23:59:59.000Z

Note: This page contains sample records for the topic "hor se trap" 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

Trapping of quantum particles and light beams by switchable potential wells  

E-Print Network (OSTI)

We consider basic dynamical effects in settings based on a pair of local potential traps that may be effectively switched on and off, or suddenly displaced, by means of appropriate control mechanisms, such as the scanning tunneling microscopy (STM) or photo-switchable quantum dots. The same models, based on the linear Schrodinger equation with time-dependent trapping potentials, apply to the description of optical planar systems designed for the switching of trapped light beams. The analysis is carried out in the analytical form, using exact solutions of the Schrodinger equation. The first dynamical problem considered in this work is the retention of a particle released from a trap which was suddenly turned off, while another local trap was switched on at a distance - immediately or with a delay. In this case, we demonstrate that the maximum of the retention rate is achieved at a specific finite value of the strength of the new trap, and at a finite value of the temporal delay, depending on the distance between the two traps. Another ptoblem is retrapping of the bound particle when the addition of the second trap transforms the single-well setting into a double-well potential (DWP). In that case, we find probabilities for the retrapping into the ground or first excited state of the DWP. We also analyze effects entailed by the application of a kick to a bound particle, the most interesting one being a kick-induced transition between the DWP's ground and excited states. In the latter case, the largest transition probability is achieved at particular strength of the kick.

Eduard Sonkin; Boris A. Malomed; Er'el Granot; Avi Marchewka

2010-07-14T23:59:59.000Z

382

Trapping of Implanted He at Cu/Nb Interfaces Measured by Neutron Reflectometry  

Science Conference Proceedings (OSTI)

In single crystalline metals, He is insoluble and precipitates into bubbles. In contrast, Cu-Nb multilayers show no evidence of bubble formation below a critical concentration. The conclusions of this paper are: (1) He is trapped at Cu/Nb , Cu/Mo interfaces; (2) He is trapped interstitially; (3) The interface swells {approx} 10 times; and (4) The layered structure retains despite the swell of interfaces.

Wang, Peng [Los Alamos National Laboratory; Zhernenkov, Mikhail [Applications Scientist at Nanometrics; Kashinath, Abishek [MIT; Demkowicz, Michael [MIT; Baldwin, Jon K. [Los Alamos National Laboratory; Majewski, Jaroslaw [Los Alamos National Laboratory

2012-06-20T23:59:59.000Z

383

Grooved impactor and inertial trap for sampling inhalable particulate matter. [Patents  

DOE Patents (OSTI)

An inertial trap and grooved impactor for providing a sharp cutoff for particles over 15 microns from entering an inhalable particulate sampler is disclosed. The impactor head has a tapered surface and is provided with V-shaped grooves. The tapered surface functions for reducing particle blow-off or reentrainment while the grooves prevent particle bounce. Water droplets and any resuspended material over the 15 micron size are collected by the inertial trap and deposited in a reservoir associated with the impactor.

Loo, B.W.

1982-02-23T23:59:59.000Z

384

BASIN VER DE GREAT ER ANETH BU G BAR KER DOME HOR SESH OE UTE DOME  

U.S. Energy Information Administration (EIA) Indexed Site

Liquids Reserve Class Liquids Reserve Class 0 20 40 10 30 Miles ± The mapped oil and gas field boundary outlines were created by the Reserves and Production Division, Office of Oil and Gas, Energy Information Administration pursuant to studies required by Section 604 of the Energy Policy and Conservation Act Amendments of 2000 (P.L. 106-469). The boundaries are not informed by subsurface structural information. The data and methods used in their creation are detailed in a report, "Scientific Inventory of Onshore Federal Lands' Oil and Gas Resources and Reserves and the Extent and Nature of Restrictions to Their Development", prepared by the US Departments of Interior, Agriculture and Energy. Unnamed fields and fields generically named "wildcat" were renamed to a concatenate of their basin and state of occurrence,

385

BASIN VER DE GREAT ER ANETH BU G BAR KER DOME HOR SESH OE UTE DOME  

U.S. Energy Information Administration (EIA) Indexed Site

BOE Reserve Class BOE Reserve Class 0 20 40 10 30 Miles ± The mapped oil and gas field boundary outlines were created by the Reserves and Production Division, Office of Oil and Gas, Energy Information Administration pursuant to studies required by Section 604 of the Energy Policy and Conservation Act Amendments of 2000 (P.L. 106-469). The boundaries are not informed by subsurface structural information. The data and methods used in their creation are detailed in a report, "Scientific Inventory of Onshore Federal Lands' Oil and Gas Resources and Reserves and the Extent and Nature of Restrictions to Their Development", prepared by the US Departments of Interior, Agriculture and Energy. Unnamed fields and fields generically named "wildcat" were renamed to a concatenate of their basin and state of occurrence,

386

BASIN VER DE GREAT ER ANETH BU G BAR KER DOME HOR SESH OE UTE DOME  

U.S. Energy Information Administration (EIA) Indexed Site

Gas Reserve Class Gas Reserve Class 0 20 40 10 30 Miles ± The mapped oil and gas field boundary outlines were created by the Reserves and Production Division, Office of Oil and Gas, Energy Information Administration pursuant to studies required by Section 604 of the Energy Policy and Conservation Act Amendments of 2000 (P.L. 106-469). The boundaries are not informed by subsurface structural information. The data and methods used in their creation are detailed in a report, "Scientific Inventory of Onshore Federal Lands' Oil and Gas Resources and Reserves and the Extent and Nature of Restrictions to Their Development", prepared by the US Departments of Interior, Agriculture and Energy. Unnamed fields and fields generically named "wildcat" were renamed to a concatenate of their basin and state of occurrence,

387

SE-MA-NO Electric Coop | Open Energy Information  

Open Energy Info (EERE)

MA-NO Electric Coop MA-NO Electric Coop Jump to: navigation, search Name SE-MA-NO Electric Coop Place Missouri Utility Id 16851 Utility Location Yes Ownership C NERC Location SERC NERC SERC Yes Activity Distribution Yes References EIA Form EIA-861 Final Data File for 2010 - File1_a[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Utility Rate Schedules Grid-background.png Municipal HPS 100 W Lighting Municipal HPS 250 W Lighting Residential Residential Residential/Commercial HPS 100 W Lighting Residential/Commercial HPS 250 W Lighting Average Rates Residential: $0.0804/kWh Commercial: $0.0763/kWh Industrial: $0.0649/kWh References ↑ "EIA Form EIA-861 Final Data File for 2010 - File1_a"

388

STATE OF WASHINGTON DEPARTMENT OF COMMERCE 1011 Plum Street SE  

NLE Websites -- All DOE Office Websites (Extended Search)

STATE OF WASHINGTON STATE OF WASHINGTON DEPARTMENT OF COMMERCE 1011 Plum Street SE  PO Box 42525  Olympia, Washington 98504-2525  (360) 725-4000 www.commerce.wa.gov July 33, 2013 Roland J. Risser Building Technologies Program Manager Office of Energy Efficiency and Renewable Energy U.S. Department of Energy 1000 Independence Avenue SW, Mail Stop EE-2J Washington, DC 20585-0121 RE: State Certification of Residential and Commercial Building Energy Codes Dear Mr. Risser: In compliance with Title III of the Energy Conservation and Production Act (ECPA) of 1976, as amended, this is to certify that the State of Washington has adopted the 2012 Edition, Washington State Energy Code, which meets or exceeds the 2012 version of the International Energy Conservation Code (IECC) for low-rise residential

389

File:EIA-PSJ-SE-LIQ.pdf | Open Energy Information  

Open Energy Info (EERE)

File File Edit with form History Facebook icon Twitter icon » File:EIA-PSJ-SE-LIQ.pdf Jump to: navigation, search File File history File usage Paradox-San Juan Basin, Southeast Part By 2001 Liquids Reserve Class Size of this preview: 463 × 599 pixels. Other resolution: 464 × 600 pixels. Full resolution ‎(5,100 × 6,600 pixels, file size: 13.12 MB, MIME type: application/pdf) Description Paradox-San Juan Basin, Southeast Part By 2001 Liquids Reserve Class Sources Energy Information Administration Authors Samuel H. Limerick; Lucy Luo; Gary Long; David F. Morehouse; Jack Perrin; Robert F. King Related Technologies Oil, Natural Gas Creation Date 2005-09-01 Extent Regional Countries United States UN Region Northern America States Utah, Colorado, New Mexico, Arizona

390

Immobilization of Cesium Traps from the BN-350 Fast Reactor (Aktau, Kazakhstan)  

SciTech Connect

During BN-350 reactor operations and also during the initial stages of decommissioning, cesium traps were used to decontaminate the reactors primary sodium coolant. Two different types of carbon-based trap were used the MAVR series, low ash granulated graphite adsorber (LAG) contained in a carrier designed to be inserted into the reactor core during shutdown; and a series of ex-reactor trap accumulators(TAs) which used reticulated vitreous carbon (RVC) to reduce Cs-137 levels in the sodium after final reactor shutdown. In total four MAVRs and seven TAs were used at BN-350 to remove an estimated cumulative 755 TBq of cesium. The traps, which also contain residual sodium, need to be immobilized in an appropriate way to allow them to be consigned as waste packages for long term storage and, ultimately, disposal. The present paper reports on the current status of the implementation phase, with particular reference to the work done to date on the trap accumulators, which have the most similarity with the cesium traps used at other reactors.

J. A. Michelbacher; C. Knight; O. G. Romanenko; I. L. Tazhibaeva; I. L. Yakovlev; A. V. Rovneyko; V. I. Maev; D. Wells; A. Herrick

2011-03-01T23:59:59.000Z

391

Transport of ions in a segmented linear Paul trap in printed-circuit-board technology  

E-Print Network (OSTI)

We describe the construction and operation of a segmented linear Paul trap, fabricated in printed-circuit-board technology with an electrode segment width of 500 microns. We prove the applicability of this technology to reliable ion trapping and report the observation of Doppler cooled ion crystals of Ca-40 with this kind of traps. Measured trap frequencies agree with numerical simulations at the level of a few percent from which we infer a high fabrication accuracy of the segmented trap. To demonstrate its usefulness and versatility for trapped ion experiments we study the fast transport of a single ion. Our experimental results show a success rate of 99.0(1)% for a transport distance of 2x2mm in a round-trip time of T=20us, which corresponds to 4 axial oscillations only. We theoretically and experimentally investigate the excitation of oscillations caused by fast ion transports with error-function voltage ramps: For a slightly slower transport (a round-trip shuttle within T=30us) we observe non-adiabatic motional excitation of 0.89(15)meV.

G. Huber; T. Deuschle; W. Schnitzler; R. Reichle; K. Singer; F. Schmidt-Kaler

2007-11-19T23:59:59.000Z

392

THE EFFECT OF SULFUR ON METHANE PARTIAL OXIDATION AND REFORMING PROCESSES FOR LEAN NOX TRAP CATALYSIS  

Science Conference Proceedings (OSTI)

Lean NOx trap catalysis has demonstrated the ability to reduce NOx emissions from lean natural gas reciprocating engines by >90%. The technology operates in a cyclic fashion where NOx is trapped on the catalyst during lean operation and released and reduced to N2 under rich exhaust conditions; the rich cleansing operation of the cycle is referred to as "regeneration" since the catalyst is reactivated for more NOx trapping after NOx purge. Creating the rich exhaust conditions for regeneration can be accomplished by catalytic partial oxidation of methane in the exhaust system. Furthermore, catalytic reforming of partial oxidation exhaust can enable increased quantities of H2 which is an excellent reductant for lean NOx trap regeneration. It is critical to maintain clean and efficient partial oxidation and reforming processes to keep the lean NOx trap functioning properly and to reduce extra fuel consumption from the regeneration process. Although most exhaust constituents do not impede partial oxidation and reforming, some exhaust constituents may negatively affect the catalysts and result in loss of catalytic efficiency. Of particular concern are common catalyst poisons sulfur, zinc, and phosphorous. These poisons form in the exhaust through combustion of fuel and oil, and although they are present at low concentrations, they can accumulate to significant levels over the life of an engine system. In the work presented here, the effects of sulfur on the partial oxidation and reforming catalytic processes were studied to determine any durability limitations on the production of reductants for lean NOx trap catalyst regeneration.

Parks, II, James E [ORNL; Ponnusamy, Senthil [ORNL

2006-01-01T23:59:59.000Z

393

Development of Metal Substrate for Denox Catalysts and Particulate Trap  

DOE Green Energy (OSTI)

The objective of this project was to develop advanced metallic catalyst substrate materials and designs for use in off-highway applications. The new materials and designs will be used as catalyst substrates and diesel particulate traps. They will increase durability, reduce flow resistance, decrease time to light-off, and reduce cost relative to cordierite substrates. Metallic catalyst substrates are used extensively for diesel oxidation catalysts and have the potential to be used in other catalytic systems for diesel engines. Metallic substrates have many advantages over ceramic materials including improved durability and resistance to thermal shock and vibration. However, the cost is generally higher than cordierite. The most common foil material used for metallic substrates is FeCr Alloy, which is expensive and has temperature capabilities beyond what is necessary for diesel applications. The first task in the project was Identification and Testing of New Materials. In this task, several materials were analyzed to determine if a low cost substitute for FeCr Alloy was available or could be developed. Two materials were identified as having lower cost while showing no decrease in mechanical properties or oxidation resistance at the application temperatures. Also, the ability to fabricate these materials into a finished substrate was not compromised, and the ability to washcoat these materials was satisfactory. Therefore, both candidate materials were recommended for cost savings depending on which would be less expensive in production quantities. The second task dealt with the use of novel flow designs to improve the converter efficiency while possibly decreasing the size of the converter to reduce cost even more. A non-linear flow path was simulated to determine if there would be an increase in efficiency. From there, small samples were produced for bench testing. Bench tests showed that the use of non-linear channels significantly reduced the light-off temperature for diesel oxidation catalytic converters. Finally, the third task was to implement these materials and designs into a full-size converter. Hot shake testing of 13-inch diameter straight channel substrates showed no significant difference in durability between the current material and the two proposed materials. At the time that this program ended, preparations were being made for full-scale emissions testing of the new design converter for comparison to a traditional straight channel with equal catalyst loading.

Pollard, Michael; Habeger, Craig; Frary, Megan; Haines, Scott; Fluharty, Amy; Dakhoul, Youssef; Carr, Michael; Park, Paul; Stefanick, Matthew; DaCosta, Herbert; Balmer-Millar, M Lou; Readey, Michael; McCluskey, Philip

2005-12-31T23:59:59.000Z

394

T-641: Oracle Java SE Critical Patch Update Advisory - June 2011 |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1: Oracle Java SE Critical Patch Update Advisory - June 2011 1: Oracle Java SE Critical Patch Update Advisory - June 2011 T-641: Oracle Java SE Critical Patch Update Advisory - June 2011 June 8, 2011 - 12:26pm Addthis PROBLEM: Oracle Java SE Critical Patch Update Advisory - June 2011 PLATFORM: JDK and JRE 6 Update 25 and earlier, Java SE, JDK 5.0 Update 29 and earlier Java SE, SDK 1.4.2_31 and earlier ABSTRACT: This Critical Patch Update contains 17 new security fixes for Oracle Java SE - 5 apply to client and server deployments of Java SE, 11 apply to client deployments of Java SE only, and 1 applies to server deployments of Java SE only. All of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without the need for a username and password. Oracle CVSS scores assume that a user running a Java applet or Java Web

395

T-641: Oracle Java SE Critical Patch Update Advisory - June 2011 |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

41: Oracle Java SE Critical Patch Update Advisory - June 2011 41: Oracle Java SE Critical Patch Update Advisory - June 2011 T-641: Oracle Java SE Critical Patch Update Advisory - June 2011 June 8, 2011 - 12:26pm Addthis PROBLEM: Oracle Java SE Critical Patch Update Advisory - June 2011 PLATFORM: JDK and JRE 6 Update 25 and earlier, Java SE, JDK 5.0 Update 29 and earlier Java SE, SDK 1.4.2_31 and earlier ABSTRACT: This Critical Patch Update contains 17 new security fixes for Oracle Java SE - 5 apply to client and server deployments of Java SE, 11 apply to client deployments of Java SE only, and 1 applies to server deployments of Java SE only. All of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without the need for a username and password. Oracle CVSS scores assume that a user running a Java applet or Java Web

396

Linear trap with three orthogonal quadrupole fields for dust charging experiments  

SciTech Connect

Investigations of charging processes on a single dust grain under controlled conditions in laboratory experiments are the unique way to understand the behavior of dust grains in complex plasma (in space, in laboratory, or in technological applications). An electrodynamic trap is often utilized for both holding a single grain and continuously measuring its charge-to-mass ratio. We propose a modified design of the linear quadrupole trap with the electrodes split into two parts; each of them being supplied by a designated source. The paper presents basic calculations and the results of the trap prototype tests. These tests have confirmed our expectations and have shown that the suggested solution is fully applicable for the dust charging experiments. The uncertainty of determination of the dust grain charge does not exceed 10{sup -3}. The main advantages of the suggested design in comparison with other traps used for dust investigations can be summarized as: The trap (i) is more opened, thus it is suitable for a simultaneous application of the ion and electron beams and UV source; (ii) facilitates investigations of dust grains in a broader range of parameters; and (iii) allows the grain to move along the axis in a controlled way.

Beranek, Martin; Nemecek, Zdenek; Safrankova, Jana; Jerab, Martin; Pavlu, Jiri [Charles University, Faculty of Mathematics and Physics, Prague (Czech Republic); Cermak, Ivo [CGC Instruments, Chemnitz (Germany)

2012-11-15T23:59:59.000Z

397

The uses of electron beam ion traps in the study of highly charged ions  

SciTech Connect

The Electron Beam Ion Trap (EBIT) is a relatively new tool for the study of highly charged ions. Its development has led to a variety of new experimental opportunities; measurements have been performed with EBITs using techniques impossible with conventional ion sources or storage rings. In this paper, I will highlight the various experimental techniques we have developed and the results we have obtained using the EBIT and higher-energy Super-EBIT built at the Lawrence Livermore National Laboratory. The EBIT employs a high-current-density electron beam to trap, ionize, and excite a population of ions. The ions can be studied in situ or extracted from the trap for external experiments. The trapped ions form an ionization-state equilibrium determined by the relative ionization and recombination rates. Ions of several different elements may simultaneously be present in the trap. The ions are nearly at rest, and, for most systems, all in their ground-state configurations. The electron-ion interaction energy has a narrow distribution and can be varied over a wide range. We have used the EBIT devices for the measurement of electron-ion interactions, ion structure, ion-surface interactions, and the behavior of low-density plasmas.

Knapp, D.

1994-11-02T23:59:59.000Z

398

Particle trap to sheath contact for a gas-insulated transmission line having a corrugated outer conductor  

DOE Patents (OSTI)

A particle trap to outer elongated conductor or sheath contact for gas-insulated transmission lines. The particle trap to outer sheath contact of the invention is applicable to gas-insulated transmission lines having either corrugated or non-corrugated outer sheaths. The contact of the invention includes an electrical contact disposed on a lever arm which in turn is rotatably disposed on the particle trap and biased in a direction to maintain contact between the electrical contact and the outer sheath.

Fischer, William H. (Pittsburgh, PA); Cookson, Alan H. (Pittsburgh, PA); Yoon, Kue H. (Pittsburgh, PA)

1984-04-10T23:59:59.000Z

399

Particle trap to sheath non-binding contact for a gas-insulated transmission line having a corrugated outer conductor  

DOE Patents (OSTI)

A non-binding particle trap to outer sheath contact for use in gas insulated transmission lines having a corrugated outer conductor. The non-binding feature of the contact according to the teachings of the invention is accomplished by having a lever arm rotatably attached to a particle trap by a pivot support axis disposed parallel to the direction of travel of the inner conductor/insulator/particle trap assembly.

Fischer, William H. (Pittsburgh, PA)

1984-04-24T23:59:59.000Z

400

The on-line charge breeding program at TRIUMF's Ion Trap For Atomic and Nuclear Science for precision mass measurements  

Science Conference Proceedings (OSTI)

TRIUMF's Ion Trap for Atomic and Nuclear science (TITAN) constitutes the only high precision mass measurement setup coupled to a rare isotope facility capable of increasing the charge state of short-lived nuclides prior to the actual mass determination in a Penning trap. Recent developments around TITAN's charge breeder, the electron beam ion trap, form the basis for several successful experiments on radioactive isotopes with half-lives as low as 65 ms and in charge states as high as 22+.

Simon, M. C.; Eberhardt, B.; Jang, F.; Luichtl, M.; Robertson, D.; Chaudhuri, A.; Delheij, P.; Grossheim, A.; Kwiatkowski, A. A.; Mane, E.; Pearson, M. R.; Schultz, B. E. [TRIUMF, Vancouver, British Columbia V6T 2A3 (Canada); Bale, J. C. [TRIUMF, Vancouver, British Columbia V6T 2A3 (Canada); Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6 (Canada); Chowdhury, U. [TRIUMF, Vancouver, British Columbia V6T 2A3 (Canada); Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2 (Canada); Ettenauer, S.; Gallant, A. T.; Dilling, J. [TRIUMF, Vancouver, British Columbia V6T 2A3 (Canada); Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z1 (Canada); Lennarz, A. [TRIUMF, Vancouver, British Columbia V6T 2A3 (Canada); Institut fuer Kernphysik, Westfaelische Wilhelms-Universitaet, D-48149 Muenster (Germany); Ma, T.; Andreoiu, C. [Department of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6 (Canada); and others

2012-02-15T23:59:59.000Z

Note: This page contains sample records for the topic "hor se trap" 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.


401

Geek-Up[11.19.2010]: Molecular Stencils, GRETINA and Trapped Antimatter |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Geek-Up[11.19.2010]: Molecular Stencils, GRETINA and Trapped Geek-Up[11.19.2010]: Molecular Stencils, GRETINA and Trapped Antimatter Geek-Up[11.19.2010]: Molecular Stencils, GRETINA and Trapped Antimatter November 19, 2010 - 5:16pm Addthis An optical micrograph of a polymer film that self-assembles into ordered nanoscale structures. | Photo Courtesy of Argonne National Laboratory An optical micrograph of a polymer film that self-assembles into ordered nanoscale structures. | Photo Courtesy of Argonne National Laboratory Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs At Argonne National Laboratory, scientists have developed a technique that may lead to more efficient, lower cost solar energy technologies. Argonne nanoscientist Seth Darling and chemist Jeff Elam have engineered a method

402

The laser ion source trap for highest isobaric selectivity in online exotic isotope production  

Science Conference Proceedings (OSTI)

The improvement in the performance of a conventional laser ion source in the laser ion source and trap (LIST) project is presented, which envisages installation of a repeller electrode and a linear Paul trap/ion guide structure. This approach promises highest isobaric purity and optimum temporal and spatial control of the radioactive ion beam produced at an online isotope separator facility. The functionality of the LIST was explored at the offline test separators of University of Mainz (UMz) and ISOLDE/CERN, using the UMz solid state laser system. Ionization efficiency and selectivity as well as time structure and transversal emittance of the produced ion beam was determined. Next step after complete characterization is the construction and installation of the radiation-hard final trap structure and its first online application.

Schwellnus, F.; Gottwald, T.; Mattolat, C.; Wendt, K. [Institut fuer Physik, Johannes Gutenberg-Universitaet, D-55099 Mainz (Germany); Blaum, K. [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg (Germany); Catherall, R.; Crepieux, B.; Fedosseev, V.; Marsh, B.; Rothe, S.; Stora, T. [CERN, CH-1211 Geneva 23 (Switzerland); Kluge, H.-J. [GSI, Planckstrasse 1, D-64291 Darmstadt (Germany)

2010-02-15T23:59:59.000Z

403

Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection August 13, 2013 - 1:59pm Addthis Photo by J.D. Griggs, courtesy of U.S.Geological Survey Photo by J.D. Griggs, courtesy of U.S.Geological Survey For Additional Information To learn more about the carbon storage projects in which NETL is involved, please visit the NETL Carbon Storage website How can a prehistoric volcanic eruption help us reduce the amount of CO2 released into the atmosphere today? The answer is found in the basalt formations created by the lava - formations that can be used as sites for injecting carbon dioxide (CO2) captured from industrial sources in a process called carbon capture and storage (CCS).

404

Electron and hole transport to trap groups at the ends of conjugated  

NLE Websites -- All DOE Office Websites (Extended Search)

and hole transport to trap groups at the ends of conjugated and hole transport to trap groups at the ends of conjugated polyfluorenes Sadayuki Asaoka, Norihiko Takeda, Tornokazu Lyoda, Andrew R. Cook and John R. Miller J. Am. Chem. Soc. 130, 11912-11920 (2008). [Find paper at ACS Publications] Abstract: Electrons and holes were injected selectively into poly-2,7-(9,9-dihexylfluorene) (pF) dissolved in a tetrahydrofuran (THF) and a 1,2-dichloroethane (DCE) solution, respectively, using pulse radiolysis. Transient absorption spectra of monoions of both signs revealed two bands attributable to formation of polarons, one in the visible region (pF+* at 580 nm, pF-* at 600 nm) and another in the near-IR region. Polyfluorenes (pF) were synthesized having anthraquinone (AQ) or naphtylimide (NI) end caps that trap electrons or di-p-tolylaminophenyl

405

Trapping the Light Fantastic | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Trapping the Light Fantastic Trapping the Light Fantastic Discovery & Innovation Stories of Discovery & Innovation Brief Science Highlights SBIR/STTR Highlights Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 07.07.11 Trapping the Light Fantastic New solar cell design uses advanced optics and nanotechnology to maximize performance and minimize cost. Discovery moves from lab bench to initial commercial scale-up inside a year. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo A 3-D graphic showing Si wires, transparent polymer, light-scattering particles, anti-reflective coating and back-reflector Image courtesy of California Institute of Technology Schematic of Atwater team's silicon nanowire solar cell.

406

Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection Ancient Lava Flows Trap CO2 for Long-Term Storage in Big Sky Injection August 13, 2013 - 1:59pm Addthis Photo by J.D. Griggs, courtesy of U.S.Geological Survey Photo by J.D. Griggs, courtesy of U.S.Geological Survey For Additional Information To learn more about the carbon storage projects in which NETL is involved, please visit the NETL Carbon Storage website How can a prehistoric volcanic eruption help us reduce the amount of CO2 released into the atmosphere today? The answer is found in the basalt formations created by the lava - formations that can be used as sites for injecting carbon dioxide (CO2) captured from industrial sources in a process called carbon capture and storage (CCS).

407

A microscopic model of electronic field noise heating in ion traps  

E-Print Network (OSTI)

Motional heating of ions in micro-fabricated traps is a challenge hindering experimental realization of large-scale quantum processing devices. Recently a series of measurements of the heating rates in surface-electrode ion traps characterized their frequency, distance, and temperature dependencies, but our understanding of the microscopic origin of this noise is still vague. In this work we develop a theoretical model for the electric field noise which is associated with a random distribution of adsorbed atoms on the trap electrode surface. By using first principle calculations of the fluctuating dipole moments of the adsorbed atoms we evaluate the distance, frequency and temperature dependence of the resulting electric field fluctuation spectrum.Our theory calculates the noise spectrum beyond the standard scenario of two-level fluctuators, by incorporating all the relevant vibrational states. The $1/f$ noise is shown to commence at roughly the frequency of the fundamental phonon transition rate and the $d^{...

Safavi-Naini, A; Weck, P; Sadeghpour, H R

2011-01-01T23:59:59.000Z

408

FISSION PRODUCT TRAPS FOR USE IN HIGH-TEMPERATURE GAS-COOLED GRAPHITE REACTORS  

SciTech Connect

A proposal is given of an approach to a fission-product trapping system which appears feasible on the basis of thermodynamic and other data available. Reactor and trapping conditions are outlined. The half-lives, fission yields, and volatility of the fission products of interest are described. To provide the most effective retention at elevated temperatures, two types of reagents are required: a highly electropositive metal that will not melt or appreciably vaporize and which will form stable non-volatile compounds with non-metallic or near non-metallic fission products; and a reagent to provide a highly electronegative element to form stable, non-volatile compounds with metallic fission products. Thermodynamic properties are included for compounds formed by reactions between the fission products and the trapping reagents. (B.O.G.)

Zumwalt, L.R.

1958-03-13T23:59:59.000Z

409

Trapping Fermionic $^{40}$K and Bosonic $^{87}$Rb on a Chip  

E-Print Network (OSTI)

We demonstrate the loading of a Bose-Fermi mixture into a microfabricated magnetic trap. In a single-chamber vacuum system, laser-cooled atoms are transported to the surface of a substrate on which gold wires have been microfabricated. The magnetic field minimum formed near these current-carrying wires is used to confine up to $6\\times10^4$ neutral $^{40}$K atoms. In addition, we can simultaneously load $2 \\times 10^5$ $^{87}$Rb atoms, demonstrating the confinement of two distinct elements with such a trap. In a sequence optimized for $^{87}$Rb alone, we observe up to $1 \\times 10^7$ trapped atoms. We describe in detail the experimental apparatus, and discuss prospects for evaporative cooling towards quantum degeneracy in both species.

S. Aubin; M. H. T. Extavour; S. Myrskog; L. J. LeBlanc; J. Esteve; S. Singh; P. Scrutton; D. McKay; R. McKenzie; I. D. Leroux; A. Stummer; J. H. Thywissen

2005-02-08T23:59:59.000Z

410

Characterization of fluorescence collection optics integrated with a micro-fabricated surface electrode ion trap  

E-Print Network (OSTI)

One of the outstanding challenges for ion trap quantum information processing is to accurately detect the states of many ions in a scalable fashion. In the particular case of surface traps, geometric constraints make imaging perpendicular to the surface appealing for light collection at multiple locations with minimal cross-talk. In this report we describe an experiment integrating Diffractive Optic Elements (DOE's) with surface electrode traps, connected through in-vacuum multi-mode fibers. The square DOE's reported here were all designed with solid angle collection efficiencies of 3.58%; with all losses included a detection efficiency of 0.388% (1.02% excluding the PMT loss) was measured with a single Ca+ ion. The presence of the DOE had minimal effect on the stability of the ion, both in temporal variation of stray electric fields and in motional heating rates.

Clark, Craig R; Ellis, A R; Hunker, Jeff; Kemme, Shanalyn A; Maunz, Peter; Tabakov, Boyan; Tigges, Chris; Stick, Daniel L

2013-01-01T23:59:59.000Z

411

Characterization of fluorescence collection optics integrated with a micro-fabricated surface electrode ion trap  

E-Print Network (OSTI)

One of the outstanding challenges for ion trap quantum information processing is to accurately detect the states of many ions in a scalable fashion. In the particular case of surface traps, geometric constraints make imaging perpendicular to the surface appealing for light collection at multiple locations with minimal cross-talk. In this report we describe an experiment integrating Diffractive Optic Elements (DOE's) with surface electrode traps, connected through in-vacuum multi-mode fibers. The square DOE's reported here were all designed with solid angle collection efficiencies of 3.58%; with all losses included a detection efficiency of 0.388% (1.02% excluding the PMT loss) was measured with a single Ca+ ion. The presence of the DOE had minimal effect on the stability of the ion, both in temporal variation of stray electric fields and in motional heating rates.

Craig R. Clark; Chin-wen Chou; A. R. Ellis; Jeff Hunker; Shanalyn A. Kemme; Peter Maunz; Boyan Tabakov; Chris Tigges; Daniel L. Stick

2013-05-21T23:59:59.000Z

412

Enhanced Efficiency of Light-Trapping Nanoantenna Arrays for Thin Film Solar Cells  

E-Print Network (OSTI)

We suggest a novel concept of efficient light-trapping structures for thin-film solar cells based on arrays of planar nanoantennas operating far from plasmonic resonances. The operation principle of our structures relies on the excitation of chessboard-like collective modes of the nanoantenna arrays with the field localized between the neighboring metal elements. We demonstrated theoretically substantial enhancement of solar-cell short-circuit current by the designed light-trapping structure in the whole spectrum range of the solar-cell operation compared to conventional structures employing anti-reflecting coating. Our approach provides a general background for a design of different types of efficient broadband light-trapping structures for thin-film solar-cell technologically compatible with large-area thin-film fabrication techniques.

Simovski, Constantin R; Voroshilov, Pavel M; Guzhva, Michael E; Belov, Pavel A; Kivshar, Yuri S

2013-01-01T23:59:59.000Z

413

Photoluminescence Blinking Dynamics of Colloidal Quantum Dots in the Presence of Controlled External Electron Traps  

Science Conference Proceedings (OSTI)

The effect of the external charge trap on the photoluminescence blinking dynamics of individual colloidal quantum dots is investigated with a series of colloidal quantum dot-bridge-fullerene dimers with varying bridge lengths, where the fullerene moiety acts as a well-defined, well-positioned external charge trap. It is found that charge transfer followed by charge recombination is an important mechanism in determining the blinking behavior of quantum dots when the external trap is properly coupled with the excited state of the quantum dot, leading to a quasi-continuous distribution of 'on' states and an early fall-off from a power-law distribution for both 'on' and 'off' times associated with quantum dot photoluminescence blinking.

Cotlet, M.; Xu, Z.

2012-01-23T23:59:59.000Z

414

Electron Traps Detected in p-type GaAsN Using Deep Level Transient Spectroscopy  

DOE Green Energy (OSTI)

The GaAsN alloy can have a band gap as small as 1.0 eV when the nitrogen composition is about 2%. Indium can also be added to the alloy to increase lattice matching to GaAs and Ge. These properties are advantageous for developing a highly-efficient, multi-junction solar cell. However, poor GaAsN cell properties, such as low open-circuit voltage, have led to inadequate performance. Deep-level transient spectroscopy of p-type GaAsN has identified an electron trap having an activation energy near 0.2 eV and a trap density of at least 1016 cm-3. This trap level appears with the addition of small amounts of nitrogen to GaAs, which also corresponds to an increased drop in open-circuit voltage.

Johnston, S.; Kurtz, S.; Friedman, D.; Ptak, A.; Ahrenkiel, R.; Crandall, R.

2005-01-01T23:59:59.000Z

415

Light Trapping for High Efficiency Heterojunction Crystalline Si Solar Cells: Preprint  

DOE Green Energy (OSTI)

Light trapping plays an important role to achieve high short circuit current density (Jsc) and high efficiency for amorphous/crystalline Si heterojunction solar cells. Si heterojunction uses hydrogenated amorphous Si for emitter and back contact. This structure of solar cell posses highest open circuit voltage of 0.747 V at one sun for c-Si based solar cells. It also suggests that over 25% record-high efficiency is possible with further improvement of Jsc. Light trapping has two important tasks. The first one is to reduce the surface reflectance of light to zero for the solar spectrum that Si has a response. The second one is to increase the effective absorption length to capture all the photon. For Si heterojunction solar cell, surface texturing, anti-reflectance indium tin oxides (ITO) layer at the front and back are the key area to improve the light trapping.

Wang, Q.; Xu, Y.; Iwaniczko, E.; Page, M.

2011-04-01T23:59:59.000Z

416

Geek-Up[11.19.2010]: Molecular Stencils, GRETINA and Trapped Antimatter |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Geek-Up[11.19.2010]: Molecular Stencils, GRETINA and Trapped Geek-Up[11.19.2010]: Molecular Stencils, GRETINA and Trapped Antimatter Geek-Up[11.19.2010]: Molecular Stencils, GRETINA and Trapped Antimatter November 19, 2010 - 5:16pm Addthis An optical micrograph of a polymer film that self-assembles into ordered nanoscale structures. | Photo Courtesy of Argonne National Laboratory An optical micrograph of a polymer film that self-assembles into ordered nanoscale structures. | Photo Courtesy of Argonne National Laboratory Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs At Argonne National Laboratory, scientists have developed a technique that may lead to more efficient, lower cost solar energy technologies. Argonne nanoscientist Seth Darling and chemist Jeff Elam have engineered a method

417

Trapping and Transportation of Adult and Juvenile Salmon in the Lower Umatilla River in Northeast Oregon: Umatilla River Basin Trap and Haul Program, October 1994-September 1995.  

DOE Green Energy (OSTI)

Threemile Falls Dam (Threemile Dam), located near the town of Umatilla, is the major collection and counting point for adult salmonids returning to the Umatilla River. Returning salmon and steelhead were collected at Threemile Dam from August 26, 1994 to June 27, 1995. A total of 1,531 summer steelhead (Oncorhynchus mykiss); 688 adult, 236 jack, and 368 subjack fall chinook (O. tshawvtscha); 984 adult and 62 jack coho (O. kisutch) ; and 388 adult and 108 jack spring chinook (O. tshawvtscha) were collected. All fish were trapped at the east bank facility. Of the fish collected, 971 summer steelhead; 581 adult and 27 jack fall chinook; 500 adult and 22 jack coho; and 363 adult and 61 jack spring chinook were hauled upstream from Threemile Dam. There were also 373 summer steelhead; 12 adult, 186 jack and 317 subjack fall chinook; 379 adult and 32 jack coho; and 15 adult and one jack spring chinook released at Threemile Dam. In addition, 154 summer steelhead were hauled to Bonifer and Minthorn for brood. The Westland Canal facility, located near the town of Echo, is the major collection point for outmigrating juvenile salmonids and steelhead kelts. The facility operated for a total of 179 days between December 2, 1994 and July 19, 1995. During that period, fish were bypassed back to the river 137 days and were trapped 42 days. Three steelhead kelts and an estimated 1,560 pounds of juvenile fish were transported from the Westland Canal trap to the Umatilla River boat ramp at rivermile 0.5. Approximately 98% of the fish transported this year were salmonids. The Threemile Dam west bank juvenile bypass began operating March 25, 1995 and was closed on June 16, 1995. The juvenile trap was operated by Oregon Department of Fish and Wildlife research personnel from April 1, 1995 through the summer to monitor juvenile outmigration.

Zimmerman, Brian C.; Duke, Bill B.

1995-09-01T23:59:59.000Z

418

Trapping capacity of fault zones, downdip Yegua Formation, Texas Gulf Coast basin  

E-Print Network (OSTI)

The homogenization of sediment from shearing forms traps in both the hanging wall and footwall due to capillary pressure differences. The sheared zone associated with large faults can form traps. Sheared zones associated with small faults can compartmentalize reservoirs leading to unreliable estimates of reserves. Measured values of capillary pressure were compared with estimated capillary pressure values from four correlation methods. Based on comparison of estimated pressure with measured pressure, Pittman's method gave the most reliable results for predicting capillary pressure and therefore the height of the oil column. However, all methods for predicting capillary pressure worked well for samples with porosities above 20% and permeabilities above 100 md. Hydrocarbon column heights were then determined from the capillary pressure values. The large sheared zone of the Cities Service Dincans1 (CD1) well, Toro Grande field, Jackson County, has a predicted trapping capacity of up to 1,961 ft of oil at 10,000 ft depth and 35% saturation of oil. Shearing is mostly at the hand specimen scale in the General Crude Kirby Lumber 2 (GCK2) well, East Sour Lake field, Hardin County, which has a maximum trapping capacity of 111 ft. From this study, it is then concluded that a homogenized sheared zone, formed from ductile deformation of sand and shale layers can form a trap to hydrocarbons. Sheared zones may be thick zones, on the order of feet, or smaller zones at microscopic or hand specimen scale. The larger the sheared zone is, the greater the trapping capacity of the fault.

Hintz, Jena Christine

2001-01-01T23:59:59.000Z

419

Mitigation of Sulfur Effects on a Lean NOx Trap Catalyst by Sorbate Reapplication  

DOE Green Energy (OSTI)

Lean NOx trap catalysis has demonstrated the ability to reduce NOx emissions from lean natural gas reciprocating engines by >90%. The technology operates in a cyclic fashion where NOx is trapped on the catalyst during lean operation and released and reduced to N2 under rich exhaust conditions; the rich cleansing operation of the cycle is referred to as "regeneration" since the catalyst is reactivated for more NOx trapping. Natural gas combusted over partial oxidation catalysts in the exhaust can be used to obtain the rich exhaust conditions necessary for catalyst regeneration. Thus, the lean NOx trap technology is well suited for lean natural gas engine applications. One potential limitation of the lean NOx trap technology is sulfur poisoning. Sulfur compounds directly bond to the NOx trapping sites of the catalyst and render them ineffective; over time, the sulfur poisoning leads to degradation in overall NOx reduction performance. In order to mitigate the effects of sulfur poisoning, a process has been developed to restore catalyst activity after sulfur poisoning has occurred. The process is an aqueous-based wash process that removes the poisoned sorbate component of the catalyst. A new sorbate component is reapplied after removal of the poisoned sorbate. The process is low cost and does not involve reapplication of precious metal components of the catalyst. Experiments were conducted to investigate the feasibility of the washing process on a lean 8.3-liter natural gas engine on a dynamometer platform. The catalyst was rapidly sulfur poisoned with bottled SO2 gas; then, the catalyst sorbate was washed and reapplied and performance was re-evaluated. Results show that the sorbate reapplication process is effective at restoring lost performance due to sulfur poisoning. Specific details relative to the implementation of the process for large stationary natural gas engines will be discussed.

Parks, II, James E [ORNL

2007-01-01T23:59:59.000Z

420

ADVANCED GASIFICATION MERCURY/TRACE METAL CONTROL WITH MONOLITH TRAPS  

SciTech Connect

Two Corning monoliths and a non-carbon-based material have been identified as potential additives for mercury capture in syngas at temperatures above 400F and pressure of 600 psig. A new Corning monolith formulation, GR-F1-2189, described as an active sample appeared to be the best monolith tested to date. The Corning SR Liquid monolith concept continues to be a strong candidate for mercury capture. Both monolith types allowed mercury reduction to below 5-?g/m3 (~5 ppb), a current U.S. Department of Energy (DOE) goal for trace metal control. Preparation methods for formulating the SR Liquid monolith impacted the ability of the monolith to capture mercury. The Energy & Environmental Research Center (EERC)-prepared Noncarbon Sorbents 1 and 2 appeared to offer potential for sustained and significant reduction of mercury concentration in the simulated fuel gas. The Noncarbon Sorbent 1 allowed sustained mercury reduction to below 5-?g/m3 (~5 ppb). The non-carbon-based sorbent appeared to offer the potential for regeneration, that is, desorption of mercury by temperature swing (using nitrogen and steam at temperatures above where adsorption takes place). A Corning cordierite monolith treated with a Group IB metal offered limited potential as a mercury sorbent. However, a Corning carbon-based monolith containing prereduced metallic species similar to those found on the noncarbon sorbents did not exhibit significant or sustained mercury reduction. EERC sorbents prepared with Group IB and IIB selenide appeared to have some promise for mercury capture. Unfortunately, these sorbents also released Se, as was evidenced by the measurement of H2Se in the effluent gas. All sorbents tested with arsine or hydrogen selenide, including Corning monoliths and the Group IB and IIB metal-based materials, showed an ability to capture arsine or hydrogen selenide at 400F and 600 psig. Based on current testing, the noncarbon metal-based sorbents appear to be the most effective arsine and hydrogen selenide sorbents. The noncarbon sorbent was able to reduce the concentration to 0 ppb from a starting concentration of 120 ppb. This compares to the target value of 5 ppb (~17?g/m3). The EERC-prepared metal-based pellet and coprecipitate sorbents exhibited arsine reductions of 90% or greater, being below 10 ppb. Corning SR Liquid monoliths exhibited brief periods (<1 hour) of attaining 90% arsine reduction but were able to achieve greater than 80% reduction for several hours. With respect to hydrogen selenide, all Group IB and IIB metal-based sorbents tested exhibited 100% reduction from an inlet concentration of approximately 400 ppb. Corning SR Liquid monoliths exhibited an 82% reduction when two monoliths were tested simultaneously in series.

Mark A. Musich; Michael L. Swanson; Grant E. Dunham; Joshua J. Stanislowski

2010-07-31T23:59:59.000Z

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We encourage you to perform a real-time search of NLEBeta
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421

Trapped-Particle Instability Leading to Bursting in Stimulated Raman Scattering Simulations  

SciTech Connect

Nonlinear, kinetic simulations of Stimulated Raman Scattering (SRS) for laser-fusion-relevant conditions present a bursting behavior. Different explanations for this regime has been given in previous studies: Saturation of SRS by increased nonlinear Landau damping [K. Estabrook et al., Phys. Fluids B 1 (1989) 1282] and detuning due to the nonlinear frequency shift of the plasma wave [H.X. Vu et al., Phys. Rev. Lett. 86 (2001) 4306]. Another mechanism, also assigning a key role to the trapped electrons, is proposed here: The break-up of the plasma wave through the trapped-particle instability.

S. Brunner; E. Valeo

2001-11-08T23:59:59.000Z

422

Electric field noise above surfaces: a model for heating rate scaling law in ion traps  

E-Print Network (OSTI)

We present a model for the scaling laws of the electric field noise spectral density as a function of the distance, $d$, above a conducting surface. Our analytical approach models the patch potentials by introducing a correlation length, $\\zeta$, of the electric potential on the surface. The predicted scaling laws are in excellent agreement with two different classes of experiments (cold trapped ions and cantilevers), that span at least four orders of magnitude of $d$. According to this model, heating rate in miniature ion traps could be greatly reduced by proper material engineering.

Dubessy, Romain; Guidoni, Luca

2008-01-01T23:59:59.000Z

423

Electric field noise above surfaces: a model for heating rate scaling law in ion traps  

E-Print Network (OSTI)

We present a model for the scaling laws of the electric field noise spectral density as a function of the distance, $d$, above a conducting surface. Our analytical approach models the patch potentials by introducing a correlation length, $\\zeta$, of the electric potential on the surface. The predicted scaling laws are in excellent agreement with two different classes of experiments (cold trapped ions and cantilevers), that span at least four orders of magnitude of $d$. According to this model, heating rate in miniature ion traps could be greatly reduced by proper material engineering.

Romain Dubessy; Thomas Coudreau; Luca Guidoni

2008-12-17T23:59:59.000Z

424

Measurement of localized heating in the focus of an optical trap  

Science Conference Proceedings (OSTI)

Localized heating in the focus of an optical trap operating in water can result in a temperature rise of several kelvins. We present spatially resolved measurements of the refractive-index distribution induced by the localized heating produced in an optical trap and infer the temperature distribution. We have determined a peak temperature rise in water of 4 K in the focus of a 985-nm-wavelength 55-mW laser beam. The localized heating is directly proportional to power and the absorption coefficient. The temperature distribution is in excellent agreement with a model based on the heat equation. (c) 2000 Optical Society of America.

Celliers, Peter M. [Lawerence Livermore National Laboratory, P. O. Box 808, Livermore, California 94550 (United States); Conia, Jerome [Cell Robotics, Inc., 2715 Broadbent Parkway NE, Albuquerque, New Mexico 87107 (United States)

2000-07-01T23:59:59.000Z

425

Pore-scale study of capillary trapping mechanism during CO2 injection in geological formations  

SciTech Connect

Geological sequestration of CO{sub 2} gas emerged as a promising solution for reducing amount of green house gases in atmosphere. A number of continuum scale models are available to describe the transport phenomena of CO{sub 2} sequestration. These models rely heavily on a phenomenological description of subsurface transport phenomena and the predictions can be highly uncertain. Pore-scale models provide a better understanding of fluid displacement processes, nonetheless such models are rare. In this work we use a Smoothed Particle Hydrodynamics (SPH) model to study pore-scale displacement and capillary trapping mechanisms of super-critical CO{sub 2} in the subsurface. Simulations are carried out to investigate the effects of gravitational, viscous, and capillary forces in terms of Gravity, Capillary, and Bond numbers. Contrary to the other published continuum scale investigations, we found that not only Gravity number but also Capillary number plays an important role on the fate of injected CO{sub 2}. For large Gravity numbers (on the order of 10), most of the injected CO{sub 2} reaches the cap-rock due to gravity segregation. A significant portion of CO{sub 2} gets trapped by capillary forces when Gravity number is small (on the order of 0.1). When Gravity number is moderately high (on the order of 1), trapping patterns are heavily dependent on Capillary number. If Capillary number is very small (less than 0.001), then capillary forces dominate the buoyancy forces and a significant fraction of injected CO{sub 2} is trapped by the capillary forces. Conversely, if Capillary number is high (higher than 0.001), capillary trapping is relatively small since buoyancy dominates the capillary forces. In addition, our simulations reveal different types of capillary trapping and flow displacement mechanisms during and after injection. In gravity dominated cases leave behind was the widespread trapping mechanism. Division was the primary trapping mechanism in viscous dominated cases. In capillary dominated cases, snap-off of the CO{sub 2} plume is the most commonly observed displacement mechanism. Large CO{sub 2} blobs are created due to coalescence mechanism.

Bandara, Uditha C.; Tartakovsky, Alexandre M.; Palmer, Bruce J.

2011-11-01T23:59:59.000Z

426

Soliton propagation, reflection, and transmission in an inhomogeneous plasma with trapped electrons  

Science Conference Proceedings (OSTI)

Transmission and reflection of solitons from a semitransparent grid in an inhomogeneous plasma in the presence of trapped electrons is studied analytically. Conditions are obtained for the obliqueness of the propagation and the drift velocity of ions for the soliton transmission and reflection. Also, a transmission-reflection conservation law is derived. The contribution of trapped electrons to the solitons' propagation and their reflection and transmission is examined through energy, amplitude, and width of the solitons, in addition to the effect of temperature and drift of the ions.

Aziz, Farah; Malik, Hitendra K.; Stroth, Ulrich [Institut fuer Plasmaforschung, Universitaet Stuttgart, 70569 Stuttgart (Germany)

2011-04-15T23:59:59.000Z

427

Some effects of parallel energy propagation on the structure of dissipative trapped electron modes  

SciTech Connect

The limitation of ballooning by parallel energy propagation is investigated for the dissipative trapped electron mode, wherein the local energy influx is proportional to the poloidally dependent trapped particle fraction. For small energetic asymmetries [mg less than 2.5 ($Omega$/sub i/a/c/sub s/) (a/R/ sup $sup 3$/$sub 4$/] the structure along the field line is predominantly a phase shift, dictated by the condition that the asymmetric energy input be compensated by parallel energy flow. For large asymmetry, mode number, and parallel arc length, the phase and amplitude variations necessitate an integral equation treatment. (auth)

Sauthoff, N. R.

1976-01-01T23:59:59.000Z

428

Influence of trapping potentials on the phase diagram of bosonic atoms in optical lattices  

SciTech Connect

We study the effect of external trapping potentials on the phase diagram of bosonic atoms in optical lattices. We introduce a generalized Bose-Hubbard Hamiltonian that includes the structure of the energy levels of the trapping potential, and show that these levels are in general populated both at finite and zero temperature. We characterize the properties of the superfluid transition for this situation and compare them with those of the standard Bose-Hubbard description. We briefly discuss similar behaviors for fermionic systems.

Giampaolo, S.M.; Illuminati, F.; Mazzarella, G.; De Siena, S. [Dipartimento di Fisica 'E. R. Caianiello', Universita di Salerno, INFM UdR di Salerno, INFN Sezione di Napoli-Gruppo Collegato di Salerno, I-84081 Baronissi, SA (Italy)

2004-12-01T23:59:59.000Z

429

Influence of trapping potentials on the phase diagram of bosonic atoms in optical lattices  

E-Print Network (OSTI)

We study the effect of external trapping potentials on the phase diagram of bosonic atoms in optical lattices. We introduce a generalized Bose-Hubbard Hamiltonian that includes the structure of the energy levels of the trapping potential, and show that these levels are in general populated both at finite and zero temperature. We characterize the properties of the superfluid transition for this situation and compare them with those of the standard Bose-Hubbard description. We briefly discuss similar behaviors for fermionic systems.

S. M. Giampaolo; F. Illuminati; G. Mazzarella; S. De Siena

2004-03-04T23:59:59.000Z

430

Static and Dynamic Properties of Trapped Fermionic Tonks-Girardeau Gases  

E-Print Network (OSTI)

We investigate some exact static and dynamic properties of one-dimensional fermionic Tonks-Girardeau gases in tight de Broglie waveguides with attractive p-wave interactions induced by a Feshbach resonance. A closed form solution for the one-body density matrix for harmonic trapping is analyzed in terms of its natural orbitals, with the surprising result that for odd, but not for even, numbers of fermions the maximally occupied natural orbital coincides with the ground harmonic oscillator orbital and has the maximally allowed fermionic occupancy of unity. The exact dynamics of the trapped gas following turnoff of the p-wave interactions are explored.

M. D. Girardeau; E. M. Wright

2005-01-11T23:59:59.000Z

431

Model simulations of continuous ion injection into electron-beam ion source trap with slanted electrostatic mirror  

Science Conference Proceedings (OSTI)

The efficiency of trapping ions in an electron-beam ion source (EBIS) is of primary importance for many applications requiring operations with externally produced ions: RIA breeders, ion sources, and traps. At the present time, the most popular method of ion injection is pulsed injection, when short bunches of ions get trapped in a longitudinal trap while traversing the trap region. Continuous trapping is a challenge for EBIS devices because mechanisms which reduce the longitudinal ion energy per charge in a trap (cooling with residual gas, energy exchange with other ions, and ionization) are not very effective, and accumulation of ions is slow. A possible approach to increase trapping efficiency is to slant the mirror at the end of the trap which is opposite to the injection end. A slanted mirror will convert longitudinal motion of ions into transverse motion, and, by reducing their longitudinal velocity, prevent these ions from escaping the trap on their way out. The trade-off for the increased trapping efficiency this way is an increase in the initial transverse energy of the accumulated ions. The slanted mirror can be realized if the ends of two adjacent electrodes, drift tubes, which act as an electrostatic mirror, are machined to produce a slanted gap, rather than an upright one. Applying different voltages to these electrodes will produce a slanted mirror. The results of two-dimensional (2D) and three-dimensional (3D) computer simulations of the ion injection into an EBIS are presented using simplified models of an EBIS with conical (2D simulations) and slanted (3D simulations) mirror electrodes.

Pikin, A.; Kponou, A.; Alessi, J. G.; Beebe, E. N.; Prelec, K.; Raparia, D. [Brookhaven National Laboratory, Upton, New York 11973 (United States)

2008-02-15T23:59:59.000Z

432

Secretary Chu to Lead Delegation to SE4All, CEM Conferences in London |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Secretary Chu to Lead Delegation to SE4All, CEM Conferences in Secretary Chu to Lead Delegation to SE4All, CEM Conferences in London Secretary Chu to Lead Delegation to SE4All, CEM Conferences in London April 9, 2012 - 10:13am Addthis WASHINGTON, DC - Later this month, U.S. Energy Secretary Steven Chu will join Energy Ministers from the world's leading economies in London for the UN Sustainable Energy for All (SE4All) conference and the Clean Energy Ministerial (CEM3). CEM3 and SE4All will hold a joint press conference on April 26, 2012, to announce outcomes from the ministerial and release the SE4All Action Agenda. The High Level Group of SE4All will work to accelerate progress on critical clean energy priorities. SE4All's objectives are to double the global rate of improvement in energy efficiency, double the share of renewable

433

Secretary Chu to Lead Delegation to SE4All, CEM Conferences in London |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SE4All, CEM Conferences in SE4All, CEM Conferences in London Secretary Chu to Lead Delegation to SE4All, CEM Conferences in London April 9, 2012 - 10:13am Addthis WASHINGTON, DC - Later this month, U.S. Energy Secretary Steven Chu will join Energy Ministers from the world's leading economies in London for the UN Sustainable Energy for All (SE4All) conference and the Clean Energy Ministerial (CEM3). CEM3 and SE4All will hold a joint press conference on April 26, 2012, to announce outcomes from the ministerial and release the SE4All Action Agenda. The High Level Group of SE4All will work to accelerate progress on critical clean energy priorities. SE4All's objectives are to double the global rate of improvement in energy efficiency, double the share of renewable energy in the global energy mix, and ensure universal access to modern

434

T-558: Oracle Java SE and Java for Business Critical Patch Update...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

8: Oracle Java SE and Java for Business Critical Patch Update Advisory - February 2011 T-558: Oracle Java SE and Java for Business Critical Patch Update Advisory - February 2011...

435

Aqueous synthesis and characterization of CdSe/ZnO core-shell nanoparticles  

Science Conference Proceedings (OSTI)

Core-shell nanomaterials based on CdSe as the core and ZnO as the shell were prepared using an aqueous route involving the use of Cd salt and NaBH4 in reaction with Se to generate CdSe in the presence of thioglycerol (TG) as a stabilizer. ...

B. P. Rakgalakane; M. J. Moloto

2011-01-01T23:59:59.000Z

436

Synthesis and characterization of blue emitting ZnSe quantum dots  

Science Conference Proceedings (OSTI)

In this work we show a new experimental methodology to obtain ZnSe nanocrystals in aqueous solution aiming their application as biophotonic probes. The nanocrystals were obtained using a simple procedure based on the arrested precipitation of ZnSe in ... Keywords: Blue emission, Colloidal synthesis, Water soluble quantum dots, ZnSe

J. J. Andrade; A. G. Brasil, Jr.; P. M. A. Farias; A. Fontes; B. S. Santos

2009-03-01T23:59:59.000Z

437

Photodeposition of Pt on Colloidal CdS and CdSe/CdS Semiconductor Nanostructures  

E-Print Network (OSTI)

on Colloidal CdS and CdSe/CdS Semiconductor Nanostructuresof Pt on colloidal CdS and CdSe/CdS core/shell nanocrystals.photoexcitation of CdS and CdSe/CdS in the presence of an

Dukovic, Gordana

2008-01-01T23:59:59.000Z

438

ESI/Ion Trap/Ion Mobility/Time-of-Flight Mass Spectrometry for Rapid and Sensitive Analysis of  

E-Print Network (OSTI)

discuss a new separation strategy for biomolecules that is based on differences in ion mobilitiesESI/Ion Trap/Ion Mobility/Time-of-Flight Mass Spectrometry for Rapid and Sensitive Analysis* Department of Chemistry, Indiana University, Bloomington, Indiana 47405 An ion trap/ion mobility

Clemmer, David E.

439

PHYSICAL REVIEW A 84, 022343 (2011) Coherence of a qubit stored in Zeeman levels of a single optically trapped atom  

E-Print Network (OSTI)

experimentally investigate the coherence properties of a qubit stored in the Zeeman substates of the 52 S1/2, F = 1 hyperfine ground level of a single optically trapped 87 Rb atom. Larmor precession of a single and the quantum repeater [1]. There, ground states of trapped atoms or ions are ideal candidates

Weinfurter, Harald

440

Anomalous electron trapping by magnetic flux tubes and electric current vortices  

E-Print Network (OSTI)

Anomalous electron trapping by magnetic flux tubes and electric current vortices F. Bentosela, a current vortex in the plane. In this case the flux is zero; there is a pair of bound states for a weak with a nonhomogeneous magnetic field B , and investigate the corresponding Pauli Hamiltonian. We prove a lower bound

Note: This page contains sample records for the topic "hor se trap" 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

Dynamics of a single trapped ion inside a nonideal QED cavity at zero temperature  

SciTech Connect

We consider a system consisting of a single ion in a Paul trap coupled to a cavity electromagnetic field mode. We analyze the fidelity of a scheme for quantum swapping between vibrational and cavity field states, when the system is in contact with a reservoir at zero temperature.

Rangel, R.; Zagury, N. [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21945-970 Rio de Janeiro (Brazil); Massoni, E. [Seccion Fisica, Departamento de Ciencias, Pontificia Universidad Catolica del Peru, Apartado 1761, Lima (Peru)

2004-02-01T23:59:59.000Z

442

Lattice Trapping Barriers to Brittle Fracture N. Bernstein and D.W. Hess*  

E-Print Network (OSTI)

Lattice Trapping Barriers to Brittle Fracture N. Bernstein and D.W. Hess* Center for Computational HPCMPO CHSSI program, and D.W. H. the National Science Foundation. *Current address: Division, 4029 (1998). [18] N. Bernstein and D.W. Hess, in Multiscale Modeling of Materials--2000, edited by L. P

443

Beauty is more attractive: Particle Production and Moduli trapping with Higher Dimensional Interaction  

E-Print Network (OSTI)

We study quantum effects on moduli dynamics arising from the particle production near the enhanced symmetry point (ESP). We paid special attention to the non-conventional interactions, which are suppressed by the cutoff scale of the effective action but the power of the field is larger. This kind of interaction is sometimes called the "higher dimensional" interaction. Considering the higher dimensional interaction, we find that the particle production is significant in a large area, which is even larger than the area that is expected from the conventional interaction. It is possible to find this possibility from the trivial adiabatic condition; however the quantitative estimation of the particle production and the trapping of the field in motion are far from trivial. In this paper we study the particle production and the trapping in detail, using both the analytical and the numerical calculations, to find a clear and intuitive result that supports trapping in a vast variety of theories. Our study shows that the trapping is possible by the non-conventional interaction that has been disregarded in previous works. Some phenomenological models of the particle physics will be mentioned to complement the discussion.

Seishi Enomoto; Satoshi Iida; Nobuhiro Maekawa; Tomohiro Matsuda

2013-10-17T23:59:59.000Z

444

Laser cooling and sympathetic cooling in a linear quadrupole rf trap  

E-Print Network (OSTI)

An investigation of the sympathetic cooling method for the studies of large ultra-cold molecular ions in a quadrupole ion trap has been conducted.Molecular dynamics simulations are performed to study the rf heating mechanisms in the ion trap. The dependence of rf heating rates on the ion temperature, trapping parameters, and the number of ions is obtained. New rf heating mechanism affecting ultra-cold ion clouds exposed to laser radiation is described.The saturation spectroscopy setup of the hyperfine spectra of the molecular iodine has been built to provide an accurate frequency reference for the laser wavelength. This reference is used to obtain the fluorescence lineshapes of the laser cooled Mg$^+$ ions under different trapping conditions.The ion temperatures are deduced from the measurements, and the influence of the rf heating rates on the fluorescence lineshapes is also discussed. Cooling of the heavy ($m=720$a.u.) fullerene ions to under 10K by the means of the sympathetic cooling by the Mg$^+$ ions($m=24$a.u.) is demonstrated. The single-photon imaging system has been developed and used to obtain the images of the Mg$^+$ ion crystal structures at mK temperatures.

Ryjkov, Vladimir Leonidovich

2003-12-01T23:59:59.000Z

445

Trapped Lee Waves Observed during PYREX by Constant Volume Balloons: Comparison with Meso-NH Simulations  

Science Conference Proceedings (OSTI)

The main objective of the present paper is the use of a constant volume balloon (CVB) as a tool to (i) study trapped lee waves and (ii) assess the forecasting capability of a nonhydrostatic numerical model. Then, CVB data obtained during the ...

Ernest NDri Koffi; Marc Georgelin; Bruno Benech; Evelyne Richard

2000-07-01T23:59:59.000Z

446

Model for hydrogen isotope backscattering, trapping and depth profiles in C and a-Si  

DOE Green Energy (OSTI)

A model of low energy hydrogen trapping and backscattering in carbon and a-silicon is described. Depth profiles are calculated and numerical results presented for various incident angular and energy distributions. The calculations yield a relation between depth profiles and the incident ion energy distribution. The use of this model for tokamak plasma diagnosis is discussed.

Cohen, S.A.; McCracken, G.M.

1979-03-01T23:59:59.000Z

447

Finite beta and resonant electron effects on trapped-electron instabilities  

SciTech Connect

Finite $beta$ (plasma pressure/magnetic pressure) and resonant electron effects on the dissipative trapped-electron instabilities are analyzed. These modifications are shown to have a strong stabilizing influence on the finite ion gyroradius and electron temperature gradient driven modes, respectively. For relevant tokamak parameters complete stabilization may be possible. Stability criteria for radially local and nonlocal cases are presented. (auth)

Tang, W.M.; Liu, C.S.; Rosenbluth, M.N.; Catto, P.J.; Callen, J.D.

1975-10-01T23:59:59.000Z

448

Steady Wind-driven Upwelling in the Presence of a Baroclinic Coastally Trapped Jet  

Science Conference Proceedings (OSTI)

The usual two-layer model for steady wind-driven upwelling along a uniform coastline is extended to incorporate the effects of an upper-layer jet trapped against the coast. The characteristic width of the jet is the internal deformation radius, ...

A. E. Hay; E. D. Kinsella

1986-08-01T23:59:59.000Z

449

Solubility trapping in formation water as dominant CO2 sink in natural gas fields  

E-Print Network (OSTI)

LETTERS Solubility trapping in formation water as dominant CO2 sink in natural gas fields Stuart M removal in nine natural gas fields in North America, China and Europe, using noble gas and carbon isotope tracers. The natural gas fields investigated in our study are dominated by a CO2 phase and provide

Haszeldine, Stuart

450

Trapping of Waves by a Constant Slope internal Interface in a Two-Layer Ocean  

Science Conference Proceedings (OSTI)

It is well known that edge and continental shelf waves can be trapped by a constant slope nearshore bottom; in a two-layer ocean of great constant depth, a constant slope internal interface, as well as the associated geostrophic current, can ...

Henri Lacombe

1982-04-01T23:59:59.000Z

451

Trapping Conformational Intermediate States in the Reaction Center Protein from Photosynthetic Bacteria  

E-Print Network (OSTI)

+, and reduced QB -, return to the ground state at cryogenic temperature in a conformation that allows a high yield of QB reduction. Thus, RCs frozen under illumination are found to be trapped above the ground 16 ( 3 meV. Thus, there are several conformational substates along the reaction coordinate

Gunner, Marilyn

452

Final Report - Advanced Ion Trap Mass Spectrometry Program - Oak Ridge National Laboratory - Sandia National Laboratory  

Science Conference Proceedings (OSTI)

This report covers the three main projects that collectively comprised the Advanced Ion Trap Mass Spectrometry Program. Chapter 1 describes the direct interrogation of individual particles by laser desorption within the ion trap mass spectrometer analyzer. The goals were (1) to develop an ''intelligent trigger'' capable of distinguishing particles of biological origin from those of nonbiological origin in the background and interferent particles and (2) to explore the capability for individual particle identification. Direct interrogation of particles by laser ablation and ion trap mass spectrometry was shown to have good promise for discriminating between particles of biological origin and those of nonbiological origin, although detailed protocols and operating conditions were not worked out. A library of more than 20,000 spectra of various types of biological particles has been assembled. Methods based on multivariate analysis and on neural networks were used to discriminate between particles of biological origin and those of nonbiological origin. It was possible to discriminate between at least some species of bacteria if mass spectra of several hundred similar particles were obtained. Chapter 2 addresses the development of a new ion trap mass analyzer geometry that offers the potential for a significant increase in ion storage capacity for a given set of analyzer operating conditions. This geometry may lead to the development of smaller, lower-power field-portable ion trap mass spectrometers while retaining laboratory-scale analytical performance. A novel ion trap mass spectrometer based on toroidal ion storage geometry has been developed. The analyzer geometry is based on the edge rotation of a quadrupolar ion trap cross section into the shape of a torus. Initial performance of this device was poor, however, due to the significant contribution of nonlinear fields introduced by the rotation of the symmetric ion-trapping geometry. These nonlinear resonances contributed to poor mass resolution and sensitivity and to erratic ion ejection behavior. To correct for these nonlinear effects, the geometry of the toroid ion trap analyzer has been modified to create an asymmetric torus, as first suggested by computer simulations that predicted significantly improved performance and unit mass resolution for this geometry. A reduced-sized version (one-fifth scale) has been fabricated but was not tested within the scope of this project. Chapter 3 describes groundbreaking progress toward the use of ion-ion chemistry to control the charge state of ions formed by the electrospray ionization process, which in turn enables precision analysis of whole proteins. In addition, this technique may offer the unique possibility of a priori identification of unknown biological material when employed with existing proteomics and genomic databases. Ion-ion chemistry within the ion trap was used to reduce the ions in highly charged states to states of +1 and +2 charges. Reduction in charge greatly simplifies identification of molecular weights of fragments from large biological molecules. This technique enables the analysis of whole proteins as biomarkers for the detection and identification of all three classes of biological weapons (bacteria, toxins, and viruses). In addition to methods development, tests were carried out with samples of tap water, local creek water, and soil (local red clay) spiked with melittin (bee venom), cholera toxin, and virus MS2. All three analytes were identified in tap water and soil; however, all three were problematic for detection in creek water at concentrations of 1 nM. More development of methods is needed.

Whitten, W.B.

2002-12-18T23:59:59.000Z

453

Polymorphic transformation in TlSe and the electrical properties of phases  

Science Conference Proceedings (OSTI)

Alloys in the TlSe-Se system on the side of the TlSe compound in the phase diagram have been investigated using differential thermal, X-ray powder diffraction, and microstructural analyses. The phase diagram of the system has been constructed, and the temperature dependences of the electrical conductivity of the phases obtained have been examined. An analysis of the thermograms of alloys in the (TlSe){sub 0.96}-Se{sub 0.04} system has revealed a structural phase transition at a temperature of 470 {+-} 1 K. Investigations into the temperature dependences of the electrical conductivity in the range 120-450 K have demonstrated that the temperature dependence of the electrical conductivity for the (TlSe){sub 0.96}-Se{sub 0.04} alloy exhibits metallic behavior.

Najafov, A. I. [Azerbaijan National Academy of Sciences, Institute of Radiation Problems (Azerbaijan); Guseinov, G. G.; Alekperov, O. Z. [Azerbaijan National Academy of Sciences, Institute of Physics (Azerbaijan); Sardarly, R. M., E-mail: sardarli@yahoo.com; Abdullaev, A. P.; Eyubova, N. A. [Azerbaijan National Academy of Sciences, Institute of Radiation Problems (Azerbaijan)

2008-09-15T23:59:59.000Z

454

Elastic and surface energies: Two key parameters for CdSe quantum dot formation  

SciTech Connect

The two-dimensional-three-dimensional transition of a strained CdSe layer on (001) ZnSe induced by the use of amorphous selenium is studied. To precisely control the thickness of the CdSe layer, atomic layer epitaxy growth mode is used. Atomic force microscopy and reflection high-energy electron diffraction measurements reveal the formation of CdSe islands when 3 ML (monolayers) of CdSe, corresponding to the critical thickness, are deposited. When only 2.5 ML of CdSe are deposited another relaxation mechanism is observed, leading to the appearance of strong undulations on the surface. For a 3 ML thick CdSe layer, transmission electron microscopy images indicate that the formation of the islands occurs only after the amorphous selenium desorption.

Robin, Ivan-Christophe; Andre, Regis; Bougerol, Catherine; Aichele, Thomas; Tatarenko, Serge [Laboratoire de Spectrometrie Physique/CNRS UMR5588, Universite Joseph Fourier, Grenoble, BP87, 38402 St. Martin d'Heres (France)

2006-06-05T23:59:59.000Z

455

Method of synthesizing and growing copper-indium-diselenide (CuInSe.sub.2) crystals  

DOE Patents (OSTI)

A process for preparing CuInSe.sub.2 crystals includes melting a sufficient quantity of B.sub.2 O.sub.3 along with stoichiometric quantities of Cu, In, and Se in a crucible in a high pressure atmosphere of inert gas to encapsulate the CuInSe.sub.2 melt and confine the Se to the crucible. Additional Se in the range of 1.8 to 2.2 percent over the stoichiometric quantity is preferred to make up for small amounts of Se lost in the process. The crystal is grown by inserting a seed crystal through the B.sub.2 O.sub.3 encapsulate into contact with the CuInSe.sub.2 melt and withdrawing the seed upwardly to grow the crystal thereon from the melt.

Ciszek, Theodore F. (Evergreen, CO)

1987-01-01T23:59:59.000Z

456

Observations of seasonal variations in atmospheric greenhouse trapping and its enhancement at high sea surface temperature  

SciTech Connect

The correlation between observed values of atmospheric greenhouse trapping and sea surface temperature is found to vary seasonally. Atmospheric greenhouse trapping is defined here as the difference between infrared emissions from the earth's surface and infrared emissions from the top of the atmosphere through cloudless skies. Infrared surface emissions are calculated from known sea surface temperatures; emissions from the top of the atmosphere are taken from direct satellite measurements. Atmospheric greenhouse trapping at the same sea surface temperature is greater in the winter than in the summer over temperate oceans. In subtropical latitudes, the opposite is true. At surface temperatures above approximately 298 K, atmospheric greenhouse trapping is found to increase even more rapidly from regions of lower sea surface temperature to regions of higher surface temperature than infrared surface emissions. The causes for this [open quotes]super[close quotes] greenhouse effect are explored, and four processes are found to contribute. Water vapor continuum absorption and thermodynamically controlled increases in water vapor concentration at constant relative humidity with increasing atmospheric temperature make significant contributions, but do not explain the entire super greenhouse effect. To explain the observations of atmospheric greenhouse trapping, the upper and middle troposphere, must be increasingly moist over the warmest sea surface temperatures, while the atmospheric temperature profile becomes increasingly unstable. Regions with these high sea surface temperatures are also increasingly subject to deep convection, which suggests that convection moistens the upper and middle troposphere in regions of convective activity relative to nonconvective regions, resulting in the super greenhouse effect. Dynamic processes, along with local thermodynamic processes, are required to explain the observed super greenhouse effect. 30 refs., 3 figs., 2 tabs.

Hallberg, R. (Univ. of Washington, Seattle (United States)); Inamdar, A.K. (Scripps Institution of Oceanography, La Jolla, CA (United States))

1993-05-01T23:59:59.000Z

457

HKC-US: Proposed Penalty (2013-SE-33002) | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Proposed Penalty (2013-SE-33002) Proposed Penalty (2013-SE-33002) HKC-US: Proposed Penalty (2013-SE-33002) July 11, 2013 DOE alleged in a Notice of Proposed Civil Penalty that HKC-US, LLC failed to certify a ceiling fan light kit as compliant with the applicable energy conservation standards. DOE regulations require a manufacturer (which includes importers) to submit reports certifying that its products have been tested and meet the applicable energy conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. HKC-US: Proposed Penalty (2013-SE-33002) More Documents & Publications HKC-US: Order (2013-SE-33002) Royal Pacific: Proposed Penalty (2013-SE-33004) Excellence Opto: Proposed Penalty

458

U-105:Oracle Java SE Critical Patch Update Advisory | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

05:Oracle Java SE Critical Patch Update Advisory 05:Oracle Java SE Critical Patch Update Advisory U-105:Oracle Java SE Critical Patch Update Advisory February 16, 2012 - 11:45am Addthis PROBLEM: Oracle Java SE Critical Patch Update Advisory PLATFORM: 1.4.2_35 and prior, 5.0 Update 33 and prior; 6 Update 30 and prior; 7 Update 2 and prior ABSTRACT: Multiple vulnerabilities were reported in Oracle Java SE. A remote user can execute arbitrary code on the target system. A remote user can cause denial of service conditions. reference LINKS: Oracle Java SE Critical Patch Critical Patch Security Alerts SecurityTracker Alert ID: 1026688 Secunia Advisory: SA48009 Red Hat advisory IMPACT ASSESSMENT: High Discussion: A remote user can send specially crafted data to execute arbitrary code on the target system or cause complete denial of service conditions. The Java

459

ADVANCES IN SE-79 ANALYSES ON SAVANNAH RIVER SITE RADIOACTIVE WASTE MATRICES  

SciTech Connect

Waste cleanup efforts underway at the United States Department of Energy's (DOE) Savannah River Site (SRS) in South Carolina, as well as other DOE nuclear sites, have created a need to characterize {sup 79}Se in radioactive waste inventories. Successful analysis of {sup 79}Se in high activity waste matrices is challenging for a variety of reasons. As a result of these unique challenges, the successful quantification of {sup 79}Se in the types of matrices present at SRS requires an extremely efficient and selective separation of {sup 79}Se from high levels of interfering radionuclides. A robust {sup 79}Se radiochemical separation method has been developed at the Savannah River National Laboratory (SRNL) which is routinely capable of successfully purifying {sup 79}Se from a wide range of interfering radioactive species. In addition to a dramatic improvements in the Kd, ease, and reproducibility of the analysis, the laboratory time has been reduced from several days to only 6 hours.

Diprete, D; C Diprete, C; Ned Bibler, N; Cj Bannochie, C; Michael Hay, M

2009-03-16T23:59:59.000Z

460

U-105:Oracle Java SE Critical Patch Update Advisory | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

5:Oracle Java SE Critical Patch Update Advisory 5:Oracle Java SE Critical Patch Update Advisory U-105:Oracle Java SE Critical Patch Update Advisory February 16, 2012 - 11:45am Addthis PROBLEM: Oracle Java SE Critical Patch Update Advisory PLATFORM: 1.4.2_35 and prior, 5.0 Update 33 and prior; 6 Update 30 and prior; 7 Update 2 and prior ABSTRACT: Multiple vulnerabilities were reported in Oracle Java SE. A remote user can execute arbitrary code on the target system. A remote user can cause denial of service conditions. reference LINKS: Oracle Java SE Critical Patch Critical Patch Security Alerts SecurityTracker Alert ID: 1026688 Secunia Advisory: SA48009 Red Hat advisory IMPACT ASSESSMENT: High Discussion: A remote user can send specially crafted data to execute arbitrary code on the target system or cause complete denial of service conditions. The Java

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461

ARTIGO INTERNET Festival Internacional de Tunas "Cidade de Lisboa" realiza-se no sbado  

E-Print Network (OSTI)

NewsSearch ARTIGO INTERNET Festival Internacional de Tunas "Cidade de Lisboa" realiza-se no sábado Internacional de Tunas "Cidade de Lisboa" realiza-se no sábado As comemorações do 17.º aniversário da Tuna Internacional de Tunas "Cidade de Lisboa", que este ano se realiza no sábado, no Coliseu dos Recreios. Apesar de

Instituto de Sistemas e Robotica

462

Photovoltaic Devices Employing Ternary PbSxSe1-x Nanocrystals  

Science Conference Proceedings (OSTI)

We report solar cells based on highly confined nanocrystals of the ternary compound PbSxSe1-x. Crystalline, monodisperse alloyed nanocrystals are obtained using a one-pot, hot injection reaction. Rutherford back scattering and energy filtered transmission electron microscopy suggest that the S and Se anions are uniformly distributed in the alloy nanoparticles. Photovoltaic devices made using ternary nanoparticles are more efficient than either pure PbS or pure PbSe based nanocrystal devices.

Ma, Wanli; Luther, Joseph; Zheng, Haimei; Wu, Yue; Alivisatos, A. Paul

2009-02-05T23:59:59.000Z

463

CdSe/ZnS Nanoparticle Composites with Amine-Functionalized Polyfluoren...  

NLE Websites -- All DOE Office Websites (Extended Search)

CdSeZnS Nanoparticle Composites with Amine-Functionalized Polyfluorene Derivatives for Polymeric Light-Emitting Diodes: Synthesis, Photophysical Properties, and the...

464

Direct Patterning of CdSe Quantum Dots into Sub-100 nm Structures  

SciTech Connect

Ordered, two-dimensional cadmium selenide (CdSe) arrays have been fabricated on indium-doped tin oxide (ITO) electrodes using the pattern replication in nonwetting templates (PRINT) process. CdSe quantum dots (QDs) with an average diameter of 2.7 nm and a pyridine surface ligand were used for patterning. The PRINT technique utilizes a perfluoropolyether (PFPE) elastomeric mold that is tolerant of most organic solvents, thus allowing solutions of CdSe QDs in 4-picoline to be used for patterning without significant deformation of the mold. Nanometer-scale diffraction gratings have been successfully replicated with CdSe QDs.

Hampton, Meredith J.; Templeton, Joseph L.; DeSimone, Joseph M.

2010-01-01T23:59:59.000Z

465

Fabrication and Characterization of Polycrystalline CuInSe 2 Thin ...  

Science Conference Proceedings (OSTI)

Symposium, Thin Film Structures for Energy Efficient Systems. Presentation Title, Fabrication and Characterization of Polycrystalline CuInSe2 Thin Film by...

466

Would you keep speeding through a speed trap if you got a ticket there before?  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

you keep speeding through a speed trap if you got a ticket there before? you keep speeding through a speed trap if you got a ticket there before? Probably (hopefully) not. Likewise, taking advantage of lessons learned on our capital asset and clean-up projects is not only fiscally prudent, but also just makes good common sense. DOE Order 413.3B "Program and Project Management for the Acquisition of Capital Assets" re- quires formal lessons learned to be documented for a project, as follows:  Within 90 days of CD-3 approval, to cover up-front planning and design lessons learned  Within 90 days of CD-4 approval, to cover project execution and facility start-up les- sons learned These should be formal documents and should be submitted to OECM for sharing throughout the

467

Analysis of Mineral Trapping for CO2 Disposal in Deep Aquifers  

Office of Scientific and Technical Information (OSTI)

Reactive Geochemical Transport Simulation to Study Mineral Trapping Reactive Geochemical Transport Simulation to Study Mineral Trapping for CO 2 Disposal in Deep Saline Arenaceous Aquifers Tianfu Xu, John A. Apps, and Karsten Pruess Earth Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA Abstract. A reactive fluid flow and geochemical transport numerical model for evaluating long-term CO 2 disposal in deep aquifers has been developed. Using this model, we performed a number of sensitivity simulations under CO 2 injection conditions for a commonly encountered Gulf Coast sediment to analyze the impact of CO 2 immobilization through carbonate precipitation. Geochemical models are needed because alteration of the predominant host rock aluminosilicate minerals is very slow and is not

468

Precise asymptotics for the parabolic Anderson model with a moving catalyst or trap  

E-Print Network (OSTI)

We consider the solution $u\\colon [0,\\infty) \\times\\mathbb{Z}^d\\rightarrow [0,\\infty) $ to the parabolic Anderson model, where the potential is given by $(t,x)\\mapsto\\gamma\\delta_{Y_t}\\left(x\\right)$ with $Y$ a simple symmetric random walk on $\\mathbb{Z}^d$. Depending on the parameter $\\gamma\\in[-\\infty,\\infty)$, the potential is interpreted as a randomly moving catalyst or trap. In the trap case, i.e., $\\gamma0$), we consider the solution $u$ from the perspective of the catalyst, i.e., the expression $u(t,Y_t+x)$. Focusing on the cases where moments grow exponentially fast (that is, $\\gamma$ sufficiently large), we describe the moment asymptotics of the expression above up to equivalence. Here, it is crucial to prove the existence of a principal eigenfunction of the corresponding Hamilton operator. While this is well-established for the first moment, we have found an extension to higher moments.

Schnitzler, Adrian

2010-01-01T23:59:59.000Z

469

Narrow-line magneto-optical cooling and trapping of strongly magnetic atoms  

E-Print Network (OSTI)

Laser cooling on weak transitions is a useful technique for reaching ultracold temperatures in atoms with multiple valence electrons. However, for strongly magnetic atoms a conventional narrow-line magneto-optical trap (MOT) is destabilized by competition between optical and magnetic forces. We overcome this difficulty in Er by developing an unusual narrow-line MOT that balances optical and magnetic forces using laser light tuned to the blue side of a narrow (8 kHz) transition. The trap population is spin-polarized with temperatures reaching below 2 microkelvin. Our results constitute an alternative method for laser cooling on weak transitions, applicable to rare-earth-metal and metastable alkaline earth elements.

Berglund, Andrew J; McClelland, Jabez J

2008-01-01T23:59:59.000Z

470

Narrow-line magneto-optical cooling and trapping of strongly magnetic atoms  

E-Print Network (OSTI)

Laser cooling on weak transitions is a useful technique for reaching ultracold temperatures in atoms with multiple valence electrons. However, for strongly magnetic atoms a conventional narrow-line magneto-optical trap (MOT) is destabilized by competition between optical and magnetic forces. We overcome this difficulty in Er by developing an unusual narrow-line MOT that balances optical and magnetic forces using laser light tuned to the blue side of a narrow (8 kHz) transition. The trap population is spin-polarized with temperatures reaching below 2 microkelvin. Our results constitute an alternative method for laser cooling on weak transitions, applicable to rare-earth-metal and metastable alkaline earth elements.

Andrew J. Berglund; James L. Hanssen; Jabez J. McClelland

2008-02-06T23:59:59.000Z

471

Three attractively interacting fermions in a harmonic trap: Exact solution, ferromagnetism, and high-temperature thermodynamics  

SciTech Connect

Three fermions with strongly repulsive interactions in a spherical harmonic trap constitute the simplest nontrivial system that can exhibit the onset of itinerant ferromagnetism. Here, we present exact solutions for three trapped, attractively interacting fermions near a Feshbach resonance. We analyze energy levels on the upper branch of the resonance where the atomic interaction is effectively repulsive. When the s-wave scattering length a is sufficiently positive, three fully polarized fermions are energetically stable against a single spin-flip, indicating the possibility of itinerant ferromagnetism, as inferred in the recent experiment. We also investigate the high-temperature thermodynamics of a strongly repulsive or attractive Fermi gas using a quantum virial expansion. The second and third virial coefficients are calculated. The resulting equations of state can be tested in future quantitative experimental measurements at high temperatures and can provide a useful benchmark for quantum Monte Carlo simulations.

Liu Xiaji; Hu Hui; Drummond, Peter D. [ARC Centre of Excellence for Quantum-Atom Optics, Centre for Atom Optics and Ultrafast Spectroscopy, Swinburne University of Technology, Melbourne 3122 (Australia)

2010-08-15T23:59:59.000Z

472

Effect of trapping in a degenerate plasma in the presence of a quantizing magnetic field  

SciTech Connect

Effect of trapping as a microscopic phenomenon in a degenerate plasma is investigated in the presence of a quantizing magnetic field. The plasma comprises degenerate electrons and non-degenerate ions. The presence of the quantizing magnetic field is discussed briefly and the effect of trapping is investigated by using the Fermi-Dirac distribution function. The linear dispersion relation for ion acoustic wave is derived in the presence of the quantizing magnetic field and its influence on the propagation characteristics of the linear ion acoustic wave is discussed. Subsequently, fully nonlinear equations for ion acoustic waves are used to obtain the Sagdeev potential and the investigation of solitary structures. The formation of solitary structures is studied both for fully and partially degenerate plasmas in the presence of a quantizing magnetic field. Both compressive and rarefactive solitons are obtained for different conditions of temperature and magnetic field.

Shah, H. A.; Iqbal, M. J.; Qureshi, M. N. S. [Department of Physics, GC University, Lahore 54000 (Pakistan); Tsintsadze, N. [Department of Physics, GC University, Lahore 54000 (Pakistan); Institute of Physics, Tbilisi 0177 (Georgia); Masood, W. [Theoretical Physics Division, PINSTECH, P.O. Nilore, Islamabad (Pakistan)

2012-09-15T23:59:59.000Z

473

Searching fast for a target on a DNA without falling to traps  

E-Print Network (OSTI)

Genomic expression depends critically both on the ability of regulatory proteins to locate specific target sites on a DNA within seconds and on the formation of long lived (many minutes) complexes between these proteins and the DNA. Equilibrium experiments show that indeed regulatory proteins bind tightly to their target site. However, they also find strong binding to other non-specific sites which act as traps that can dramatically increase the time needed to locate the target. This gives rise to a conflict between the speed and stability requirements. Here we suggest a simple mechanism which can resolve this long-standing paradox by allowing the target sites to be located by proteins within short time scales even in the presence of traps. Our theoretical analysis shows that the mechanism is robust in the presence of generic disorder in the DNA sequence and does not require a specially designed target site.

O. Bnichou; Y. Kafri; M. Sheinman; R. Voituriez

2009-01-27T23:59:59.000Z

474

Thick-film technology for ultra high vacuum interfaces of micro-structured traps  

E-Print Network (OSTI)

We adopt thick-film technology to produce ultra high vacuum compatible interfaces for electrical signals. These interfaces permit voltages of hundreds of Volts and currents of several Amperes and allow for very compact vacuum setups, useful in quantum optics in general, and especially for quantum information and quantum simulations using miniaturized traps for ions or neutral atoms. Such printed circuits can also be useful as pure in-vacuum devices. We demonstrate a specific interface, which provides eleven current feedthroughs, more than 70 dc feedthroughs and a feedthrough for radio frequencies. We achieve a pressure in the low 1e-11mbar range and demonstrate the full functionality of the interface by trapping chains of cold ytterbium ions, which requires all of the signals mentioned above being present. In addition, a versatile multi-channel device for supplying precise time-dependent voltages has been developed.

Delia Kaufmann; Thomas Collath; M. Tanveer Baig; Peter Kaufmann; Eman Asenwar; Michael Johanning; Christof Wunderlich

2011-07-20T23:59:59.000Z

475

Effects of trapping and finite temperature in a relativistic degenerate plasma  

SciTech Connect

In the present work, we have undertaken, for the first time, investigation on the effect of trapping on the formation of solitary structures in relativistic degenerate plasmas. Such plasmas have been observed in dense astrophysical objects, and in laboratory these may result due to the interaction of intense lasers with matter. We have used the relativistic Fermi-Dirac distribution to describe the dynamics of the degenerate trapped electrons by solving the kinetic equation. The Sagdeev potential approach has been employed to obtain the arbitrary amplitude solitary structures both when the plasma has been considered cold and when small temperature effects have been taken into account. The theoretical results obtained have been analyzed numerically for different parameter values, and the results have been presented graphically.

Shah, H. A.; Qureshi, M. N. S. [Physics Department, GC University, Lahore 54000 (Pakistan); Masood, W. [Theoretical Plasma Physics Division, PINSTECH, P.O. Nilore, Islamabad 44000 (Pakistan); Tsintsadze, N. L. [Physics Department, GC University, Lahore 54000 (Pakistan); Institute of Physics, Georgian Academy of Sciences, Tblisi 380077 (Georgia)

2011-10-15T23:59:59.000Z

476

Water-waves modes trapped in a canal by a body with the rough surface  

E-Print Network (OSTI)

The problem about a body in a three dimensional infinite channel is considered in the framework of the theory of linear water-waves. The body has a rough surface characterized by a small parameter $\\epsilon>0$ while the distance of the body to the water surface is also of order $\\epsilon$. Under a certain symmetry assumption, the accumulation effect for trapped mode frequencies is established, namely, it is proved that, for any given $d>0$ and integer $N>0$, there exists $\\epsilon(d,N)>0$ such that the problem has at least $N$ eigenvalues in the interval $(0,d)$ of the continuous spectrum in the case $\\epsilon\\in(0,\\epsilon(d,N)) $. The corresponding eigenfunctions decay exponentially at infinity, have finite energy, and imply trapped modes.

G. Cardone; T. Durante; S. A. Nazarov

2009-10-06T23:59:59.000Z

477

Polish permian basin: Lithofacies traps for gas within the Rotliegende deposits as a new exploration potential  

SciTech Connect

Rotliegende deposits are the most prospective reservoir gas rocks in the Polish Permian basin. Thirty years of their exploration have led to location of numerous gas fields in the upper-most part of these series, particularly in the area of the Fore-Sudetic monocline. Up to this time, exploration studies concentrated mainly on structural objects, and most of the structures were positive gas traps. Well and seismic data also indicate an occurrence of lithofacies gas traps; they occur mainly in the sandstone zones within the fanglomerates surrounding the Wolsztyn Ridge. When comparing the facies regularities in the known gas fields in the German Permian basin (interfingering sandstones and claystones) to the facies patterns of the Polish Permian basin, one may suspect similar exploration possibilities. These are the first promising results. Advances in analysis of the Rotliegende depositional systems will enable us to create a new exploration potential.

Karnkowski, P.H. (Warsaw Univ., Warsaw (Poland))

1993-09-01T23:59:59.000Z

478

Thermodynamics analogue for self-trapped spinning-stationary Madelung fluid  

E-Print Network (OSTI)

We discuss two-dimensional Madelung fluid dynamics whose irrotational case reduces into the Schr\\"odinger equation for a free single particle. We show that the self-trapped spinning-stationary Madelung fluid reported in the previous paper can be analogically identified as an equilibrium thermodynamics system. This is done by making correspondence between Shannon entropy over Madelung density and internal energy to be defined in the main text, respectively with thermal-entropy and thermal-internal energy of equilibrium thermodynamics system. This leads us to identify a Madelung fluid analog of thermal-temperature at the vanishing value of which the stationary Madelung fluid will be no more spinning and is equal to the quantum mechanical ground state of a particle trapped inside a cylindrical tube external potential.

Agung Budiyono

2006-01-31T23:59:59.000Z

479

Design of a millimetre-scale magnetic surface trap for cold atoms  

E-Print Network (OSTI)

We study a novel millimetre-scale magnetic trap for ultracold atoms, in which the current carrying conductors can be situated outside the vacuum region, a few mm away from the atoms. This design generates a magnetic field gradient in excess of \\SI{1000}{G/cm} at a distance of \\SI{2}{mm} from the conductors. We perform electromagnetic and thermo-mechanical characterisation using Finite Element Methods (FEM). The predicted behaviour has been verified by electrical and thermal measurements on a prototype, but has not been implemented on an apparatus with cold atoms. Operating this trap at the highest gradient allows for rapid evaporative cooling comparable to that achieved by atom chips.

Trypogeorgos, Dimitris

2013-01-01T23:59:59.000Z

480

Spatial correlation functions for the collective degrees of freedom of many trapped ions  

E-Print Network (OSTI)

Spatial correlation functions provide a glimpse into the quantum correlations within a quantum system. Ions in a linear trap collectively form a nonuniform, discretized background on which a scalar field of phonons propagates. Trapped ions have the experimental advantage of each having their own "built-in" motional detector: electronic states that can be coupled, via an external laser, to the ion's vibrational motion. The post-interaction electronic state can be read out with high efficiency, giving a stochastic measurement record whose classical correlations reflect the quantum correlations of the ions' collective vibrational state. Here we calculate this general result, then we discuss the long detection-time limit and specialize to Gaussian states, and finally we compare the results for thermal versus squeezed states.

Nicolas C. Menicucci; G. J. Milburn