National Library of Energy BETA

Sample records for differences reaching double

  1. Double-Difference Tomography for Sequestration MVA

    SciTech Connect (OSTI)

    Westman, Erik

    2008-12-31

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

  2. Pinning Down the Mechanism of Neutrinoless Double {beta} Decay with Measurements in Different Nuclei

    SciTech Connect (OSTI)

    Deppisch, Frank [Deutsches Elektronen-Synchrotron (DESY), D-22603 Hamburg (Germany); Paes, Heinrich [Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487 (United States)

    2007-06-08

    A measurement of neutrinoless double beta decay in one isotope does not allow us to determine the underlying physics mechanism. We discuss the discrimination of mechanisms for neutrinoless double beta decay by comparing ratios of half-life measurements for different isotopes. Six prominent examples for specific new physics contributions to neutrinoless double beta decay are analyzed. We find that the change in corresponding ratios of half lives varies from 60% for supersymmetric models up to a factor of 5-20 for extra-dimensional and left-right-symmetric mechanisms.

  3. Riser Difference Evaluation from Ultrasonic Wall Thickness Inspection of Thirteen Double-Shell Tanks

    SciTech Connect (OSTI)

    Weier, Dennis R.; Pardini, Allan F.

    2010-03-15

    PNNL has performed an analysis of ultrasonic thickness measurements taken on Hanford's double-shell tanks (DSTs) approximately eight years apart. The analysis was performed to determine whether significant differences exist between ultrasonic thickness measurements made in two opposite risers in Hanford DSTs that have been examined twice.

  4. Double-Difference Tomography for Sequestration MVA [monitoring, verification, and accounting

    SciTech Connect (OSTI)

    Westman, Erik

    2012-12-31

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

  5. Probing particle and nuclear physics models of neutrinoless double beta decay with different nuclei

    SciTech Connect (OSTI)

    Fogli, G. L.; Rotunno, A. M. [Dipartimento Interateneo di Fisica 'Michelangelo Merlin', Via Amendola 173, 70126 Bari (Italy); Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Via Orabona 4, 70126 Bari (Italy); Lisi, E. [Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Via Orabona 4, 70126 Bari (Italy)

    2009-07-01

    Half-life estimates for neutrinoless double beta decay depend on particle physics models for lepton-flavor violation, as well as on nuclear physics models for the structure and transitions of candidate nuclei. Different models considered in the literature can be contrasted - via prospective data - with a 'standard' scenario characterized by light Majorana neutrino exchange and by the quasiparticle random phase approximation, for which the theoretical covariance matrix has been recently estimated. We show that, assuming future half-life data in four promising nuclei ({sup 76}Ge, {sup 82}Se, {sup 130}Te, and {sup 136}Xe), the standard scenario can be distinguished from a few nonstandard physics models, while being compatible with alternative state-of-the-art nuclear calculations (at 95% C.L.). Future signals in different nuclei may thus help to discriminate at least some decay mechanisms, without being spoiled by current nuclear uncertainties. Prospects for possible improvements are also discussed.

  6. 1-D seismic velocity model and hypocenter relocation using double difference method around West Papua region

    SciTech Connect (OSTI)

    Sabtaji, Agung E-mail: agung.sabtaji@bmkg.go.id; Nugraha, Andri Dian

    2015-04-24

    West Papua region has fairly high of seismicity activities due to tectonic setting and many inland faults. In addition, the region has a unique and complex tectonic conditions and this situation lead to high potency of seismic hazard in the region. The precise earthquake hypocenter location is very important, which could provide high quality of earthquake parameter information and the subsurface structure in this region to the society. We conducted 1-D P-wave velocity using earthquake data catalog from BMKG for April, 2009 up to March, 2014 around West Papua region. The obtained 1-D seismic velocity then was used as input for improving hypocenter location using double-difference method. The relocated hypocenter location shows fairly clearly the pattern of intraslab earthquake beneath New Guinea Trench (NGT). The relocated hypocenters related to the inland fault are also observed more focus in location around the fault.

  7. Filamentation induced by collinear femtosecond double pulses with different wavelengths in air

    SciTech Connect (OSTI)

    Li, Suyu; Sui, Laizhi; Li, Shuchang; Liu, Dunli; Li, He; Li, Qingyi; Zhang, Fangjian; Chen, Anmin; Jiang, Yuanfei Jin, Mingxing

    2015-09-15

    Filamentation induced by collinear femtosecond double pulses with different wavelengths (400 nm + 800 nm) in air is investigated by measuring the filament spectra along the propagation axis. By changing their energies and the time delay between them, the role of each pulse in the filamentation is investigated. Though the two pulses do not overlap in time, the filament generated by the previous pulse will interact with the latter one, thus affecting the filamentation process. Each pulse plays a different role when the time delay and input energy are different: As the energy of the 800 nm pulse is relative high (∼600 μJ), the 400 nm pulse has inhibitory and supplementary effects on the filament generated by the 800 nm one as it is prior to and behind the 800 nm one, respectively, which ultimately influences the filament length and strength; however, as energy of the 800 nm pulse decreases to 340 μJ, the filament mainly results from the 400 nm pulse and the 800 nm one just plays an auxiliary role. This study provides an effective way to control filamentation.

  8. Preliminary results of teleseismic double-difference relocation of earthquakes around Indonesian archipelago region

    SciTech Connect (OSTI)

    Nugraha, Andri Dian Widiyantoro, Sri; Shiddiqi, Hasbi Ash; Ramdhan, Mohamad; Wandono,; Sutiyono,; Handayani, Titi; Nugroho, Hendro

    2015-04-24

    Indonesian archipelago region is located in active tectonic setting and high seismicity zone. During the last decade, Indonesian was experienced with destructive major earthquakes causing damage and victims. The information of precise earthquake location parameters are very important in partular for earthquake early warning to the society and for advance seismic studies. In this study, we attempted to improve hypocenter location compiled by BMKG for time periods of April, 2009 up to June, 2014 for about 22,000 earthquake events around Indonesian region. For the firts time, we applied teleseismic double-difference relocation algorithm (teletomoDD) to improve hypocenter region in Indonesia region combining regional and teleseismic stations. Hypocenter relocation was performed utilizing local, regional, and teleseismic P-wave arrival time data. Our relocation result show that travel-time RMS errors were greatly reduced compared to the BMKG catalog. Seismicity at shallower depth (less than 50?km) shows significantly improvement especially in depth, and refined shallow geological structures, e.g. trench and major strike slip faults. Clustered seismicity is also detected beneath volcanic region, and probably related volcano activities and also major faults nearby. In the Sunda arc region, seismicity at shallower depth centered at two major distributions parallel to the trench strike direction, i.e. around fore-arc and in mainland that related to major fault, e.g. the Sumatran fault, and volcanic fronts. Below Central Java region, relocated hypocenter result showed double seismic zone pattern. A seismic gap is detected around the Sunda-Banda transition zone where transition between oceanic subduction to continental crust collision of Australian plate occurs. In Eastern Indonesia region, shallow earthquakes are observed related to major strike slip faults, e.g. Sorong and Palu-Koro fault, volcanism, and shallow part of subduction and collision zones. We also compare our

  9. SNL Partnerships National Reach

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

    JavaScript to run. Please enable JavaScript in your Browser's settings. Agreements: Partners: Partnerships National Reach Sandia Partnerships Partnering With Sandia Sandia Partnership Opportunity Brochure CRADA Overview Brochure Video Highlights Reliable video analysis helps security company grow Entrepreneur grows microswitch company Portable anthrax testing with lab-in-a-pocket Keeping medicines cool without electricity Cleaning contaminated water at Fukushima Kids with disabilities inspire a

  10. Microsoft Word - Agreement Reached

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

    Contact: Susan Scott Public Affairs (575) 234-7204 www.trusolutionsnm.com Washington TRU Solutions LLC Waste Isolation Pilot Plant P.O. Box 2078 Carlsbad, New Mexico 88221 For Immediate Release Agreement Reached Between WTS and Union Employees CARLSBAD, N.M., October 14, 2009 -Washington TRU Solutions (WTS) officials said today that company and United Steel Workers Union representatives have agreement on a new two-year contract. "Frankly, we're elated with the outcome. We have an important

  11. LANL reaches waste shipment milestone

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

    LANL reaches waste shipment milestone LANL reaches waste shipment milestone The Lab surpassed 100,000 plutonium-equivalent curies of TRU waste shipped to WIPP, about one-third of the Lab's total. May 31, 2011 A shipment of transuranic waste on its way to the WIPP repository A shipment of transuranic waste on its way to the WIPP repository. Contact Fred deSousa Communications Office (505) 665-3430 Email LOS ALAMOS, New Mexico, May 31, 2011 - Los Alamos National Laboratory has reached an important

  12. Tailoring surface properties and structure of layered double hydroxides using silanes with different number of functional groups

    SciTech Connect (OSTI)

    Tao, Qi; He, Hongping; Li, Tian; Frost, Ray L.; Zhang, Dan; He, Zisen

    2014-05-01

    Four silanes, trimethylchlorosilane (TMCS), dimethyldiethoxylsilane (DMDES), 3-aminopropyltriethoxysilane (APTES) and tetraethoxysilane (TEOS), were adopted to graft layered double hydroxides (LDH) via an induced hydrolysis silylation method (IHS). Fourier transform infrared spectra (FTIR) and {sup 29}Si MAS nuclear magnetic resonance spectra ({sup 29}Si MAS NMR) indicated that APTES and TEOS can be grafted onto LDH surfaces via condensation with hydroxyl groups of LDH, while TMCS and DMDES could only be adsorbed on the LDH surface with a small quantity. A combination of X-ray diffraction patterns (XRD) and {sup 29}Si MAS NMR spectra showed that silanes were exclusively present in the external surface and had little influence on the long range order of LDH. The surfactant intercalation experiment indicated that the adsorbed and/or grafted silane could not fix the interlamellar spacing of the LDH. However, they will form crosslink between the particles and affect the further surfactant intercalation in the silylated samples. The replacement of water by ethanol in the tactoids and/or aggregations and the polysiloxane oligomers formed during silylation procedure can dramatically increase the value of BET surface area (S{sub BET}) and total pore volumes (V{sub p}) of the products. - Graphical abstract: The replacement of water by ethanol in the tactoids and aggregations of LDHs, and the polysiloxane oligomers formed during silylation process can dramatically increase the BET surface area (S{sub BET}) and the total pore volume (V{sub p}) of the silylated products. - Highlights: Silanes with multifunctional groups were grafted onto LDH surface in C{sub 2}H{sub 5}OH medium. The number of hydrolysable groups in silanes affects the structure of grafted LDH. Replacement of H{sub 2}O by C{sub 2}H{sub 5}OH in aggregations increases S{sub BET} and V{sub p} of grafted LDH. Polysiloxane oligomers contribute to the increase of S{sub BET} and V{sub p} of grafted LDH.

  13. Preliminary result of teleseismic double-difference relocation of earthquakes in the Molucca collision zone with a 3D velocity model

    SciTech Connect (OSTI)

    Shiddiqi, Hasbi Ash E-mail: h.a.shiddiqi@gmail.com; Widiyantoro, Sri; Nugraha, Andri Dian; Ramdhan, Mohamad; Wandono,; Sutiyono,; Handayani, Titi; Nugroho, Hendro

    2015-04-24

    We have relocated hypocenters of earthquakes occurring in the Molucca collision zone and surrounding region taken from the BMKG catalog using teleseismic double-difference relocation algorithm (teletomoDD). We used P-wave arrival times of local, regional, and teleseismic events recorded at 304 recording stations. Over 7,000 earthquakes were recorded by the BMKG seismographicnetworkin the study region from April, 2009 toJune, 2014. We used a 3D regional-global nested velocity modelresulting fromprevious global tomographystudy. In this study, the3D seismic velocity model was appliedto theIndonesian region, whilethe1D seismicvelocity model (ak135)wasused for regions outside of Indonesia. Our relocation results show a better improvement in travel-time RMS residuals comparedto those of the BMKG catalog.Ourresultsalso show that relocation shifts were dominated intheeast-west direction, whichmaybeinfluenced by theexistingvelocity anomaly related to the reversed V-shaped slabbeneaththestudy region. Our eventrelocation results refine the geometry of slabs beneath the Halmahera and Sangihe arcs.

  14. Double bevel construction of a diamond anvil

    DOE Patents [OSTI]

    Moss, William C.

    1988-01-01

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

  15. Double bevel construction of a diamond anvil

    DOE Patents [OSTI]

    Moss, W.C.

    1988-10-11

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

  16. National Ignition Facility Reaches Milestone Early | National...

    National Nuclear Security Administration (NNSA)

    Reaches Milestone Early | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing Proliferation Powering the...

  17. PROGRAM REACHES DIVERSE NORTH CAROLINA COMMUNITY

    Broader source: Energy.gov [DOE]

    The City of Greensboro, North Carolina, sought to reach a diverse community with energy efficiency improvements through the BetterBuildings for Greensboro Program. While all residential and...

  18. Pumpdown assistance extends coiled tubing reach

    SciTech Connect (OSTI)

    Tailby, R.J. )

    1992-07-01

    One of the most challenging coiled tubing applications to emerge in the last few years is horizontal well maintenance. When wireline cannot be used, techniques that offer some of the same flexibility, availability and relatively low cost must be used. During this same period, however, drilling technology has also made huge strides in horizontal and extended-reach areas. Wells are now being drilled with horizontal lengths in excess of 6,000 ft and measured depths of more than 22,000 ft. This paper reports that although horizontal wells are definitely here to stay, many operators have had to reevaluate their positions after being confronted with the problem of recompleting these wells to eliminate excessive water or gas production. A full workover with workstring using either a drilling rig or snubbing unit can be expensive and may lead to lost production because of limited rig availability. Coiled tubing has successfully been used in most cases thus far, but it has length and horizontal reach limitations that drilling technology will soon overtake. Within the constraints of current technology and tube capabilities, coiled tubing does not have the buckling resistance or reel capacity to service today's longest horizontal and extended reach wells or those planned and foreseen in the future. Even if coiled tubing can reach TD, operations requiring downward force are severely restricted.

  19. On the use of the double floating probe method to infer the difference between the electron and the heavy particles temperatures in an atmospheric pressure, vortex-stabilized nitrogen plasma jet

    SciTech Connect (OSTI)

    Prevosto, L. Mancinelli, B. R.; Kelly, H.; Instituto de Fsica del Plasma , Departamento de Fsica, Facultad de Ciencias Exactas y Naturales Ciudad Universitaria Pab. I, 1428 Buenos Aires

    2014-05-15

    Sweeping double probe measurements in an atmospheric pressure direct current vortex-stabilized plasma jet are reported (plasma conditions: 100 A discharge current, N{sub 2} gas flow rate of 25 Nl/min, thoriated tungsten rod-type cathode, copper anode with 5 mm inner diameter). The interpretation of the double probe characteristic was based on a generalization of the standard double floating probe formulae for non-uniform plasmas coupled to a non-equilibrium plasma composition model. Perturbations caused by the current to the probe together with collisional and thermal processes inside the probe perturbed region were taken into account. Radial values of the average electron and heavy particle temperatures as well as the electron density were obtained. The calculation of the temperature values did not require any specific assumption about a temperature relationship between different particle species. An electron temperature of 10?900 900 K, a heavy particle temperature of 9300 900 K, and an electron density of about 3.5 10{sup 22} m{sup ?3} were found at the jet centre at 3.5 mm downstream from the torch exit. Large deviations from kinetic equilibrium were found toward the outer border of the plasma jet. These results showed good agreement with those previously reported by the authors by using a single probe technique. The calculations have shown that this method is particularly useful for studying spraying-type plasma torches operated at power levels of about 15 kW.

  20. Double hull grounding experiments

    SciTech Connect (OSTI)

    Rodd, J.L.; Sikora, J.P.

    1995-12-31

    In the last few years the public and governments of many nations have become increasingly aware of the need for improving oil tanker safety. The requirements for double hull tankers are an attempt to address this need through legislation. Even though a number of investigations on the mechanics of collisions have been done in the past, until recently very little research supported the development of structural improvements to reduce oil tanker damage during grounding and stranding accidents. An aggressive evaluation of double hull tanker crashworthiness in stranding and grounding accidents is underway at CD/NSWC (formerly the David Taylor Research Center). The ability to predict damage from grounding accidents accurately is not currently available. The objective of this paper is to present qualitatively the structural failure mechanisms associated with stranding and grounding events for candidate double hull tanker structures and to present some simple methods for comparing damage scenarios. A comparison of the structural performance of key features in several very different designs will provide useful information toward this understanding.

  1. Spallation Neutron Source reaches megawatt power

    SciTech Connect (OSTI)

    Dr. William F. Brinkman

    2009-09-30

    The Department of Energy's Spallation Neutron Source (SNS), already the world's most powerful facility for pulsed neutron scattering science, is now the first pulsed spallation neutron source to break the one-megawatt barrier. "Advances in the materials sciences are fundamental to the development of clean and sustainable energy technologies. In reaching this milestone of operating power, the Spallation Neutron Source is providing scientists with an unmatched resource for unlocking the secrets of materials at the molecular level," said Dr. William F. Brinkman, Director of DOE's Office of Science.

  2. Spallation Neutron Source reaches megawatt power

    ScienceCinema (OSTI)

    Dr. William F. Brinkman

    2010-01-08

    The Department of Energy's Spallation Neutron Source (SNS), already the world's most powerful facility for pulsed neutron scattering science, is now the first pulsed spallation neutron source to break the one-megawatt barrier. "Advances in the materials sciences are fundamental to the development of clean and sustainable energy technologies. In reaching this milestone of operating power, the Spallation Neutron Source is providing scientists with an unmatched resource for unlocking the secrets of materials at the molecular level," said Dr. William F. Brinkman, Director of DOE's Office of Science.

  3. Development and Deployment of the Extended Reach Sluicing System (ERSS) for Retrieval of Hanford Single Shell Tank Waste. Draft

    SciTech Connect (OSTI)

    Bauer, Roger E.; Figley, Reed R.; Innes, A. G.

    2013-11-11

    A history of the evolution and the design development of Extended Reach Sluicer System (ERSS) is presented. Several challenges are described that had to be overcome to create a machine that went beyond the capabilities of prior generation sluicers to mobilize waste in Single Shell Tanks for pumping into Double Shell Tank receiver tanks. Off-the-shelf technology and traditional hydraulic fluid power systems were combined with the custom-engineered components to create the additional functionality of the ERSS, while still enabling it to fit within very tight entry envelope into the SST. Problems and challenges inevitably were encountered and overcome in ways that enhance the state of the art of fluid power applications in such constrained environments. Future enhancements to the ERSS design are explored for retrieval of tanks with different dimensions and internal obstacles.

  4. Reach and get capability in a computing environment

    DOE Patents [OSTI]

    Bouchard, Ann M.; Osbourn, Gordon C.

    2012-06-05

    A reach and get technique includes invoking a reach command from a reach location within a computing environment. A user can then navigate to an object within the computing environment and invoke a get command on the object. In response to invoking the get command, the computing environment is automatically navigated back to the reach location and the object copied into the reach location.

  5. Creative problem solving at Rocky Reach

    SciTech Connect (OSTI)

    Bickford, B.M.; Garrison, D.H.

    1997-04-01

    Tainter gate inspection and thrust bearing cooling system problems at the 1287-MW Rocky Reach hydroelectric project on the Columbia River in Washington are described. Gate inspection was initiated in response to a failure of similar gates at Folsom Dam. The approach involved measuring the actual forces on the gates and comparing them to original model study parameters, rather than the traditional method of building a hydraulic model. Measurement and visual inspection was completed in one day and had no effect on migration flows. Two problems with the thrust bearing cooling system are described. First, whenever a generating unit was taken off line, cooling water continued circulating and lowered oil temperatures. The second problem involved silt buildup in flow measuring device tubes on the cooling water system. Modifications to correct cooling system problems and associated costs are outlined.

  6. A double-double/double-single computation package

    Energy Science and Technology Software Center (OSTI)

    2004-12-01

    The DDFUNIDSFUN software permits a new or existing Fortran-90 program to utilize double-double precision (approx. 31 digits) or double-single precision (approx. 14 digits) arithmetic. Double-double precision is required by a rapidly expandirtg body of scientific computations in physics and mathematics, for which the conventional 64-bit IEEE computer arithmetic (about 16 decimal digit accuracy) is not sufficient. Double-single precision permits users of systems that do not have hardware 64-bit IEEE arithmetic (such as some game systems)more » to perform arithmetic at a precision nearly as high as that of systems that do. Both packages run significantly faster Than using multiple precision or arbitrary precision software for this purpose. The package includes an extensive set of low-level routines to perform high-precision arithmetic, including routines to calculate various algebraic and transcendental functions, such as square roots, sin, ccc, exp, log and others. In addition, the package includes high-level translation facilities, so that Fortran programs can utilize these facilities by making only a few changes to conventional Fortran programs. In most cases, the only changes that are required are to change the type statements of variables that one wishes to be treated as multiple precision, plus a few other minor changes. The DDFUN package is similar in functionality to the double-double part of the GD package, which was previously written at LBNL. However, the DDFUN package is written exclusively in Fortran-90, thus avoidIng difficulties that some users experience when using GD, which includes both Fortran-90 and C++ code.« less

  7. Reaching Underground Sources (from MIT Energy Initiative's Energy...

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

    Reaching Underground Sources (from MIT Energy Initiative's Energy Futures, Spring 2012) American Fusion News Category: Massachusetts Institute of Technology (MIT) Link: Reaching ...

  8. Reaching 100% Renewable Energy, City of Aspen (Fact Sheet), NREL...

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

    REACHING 100% RENEWABLE ENERGY City of Aspen and the National Renewable Energy Laboratory develop and implement a strategy to cost-effectively reach a ground- breaking goal In...

  9. Carrier lifetimes and interface recombination velocities in CdTe/Mg{sub x}Cd{sub 1−x}Te double heterostructures with different Mg compositions grown by molecular beam epitaxy

    SciTech Connect (OSTI)

    Liu, Shi; Lassise, Maxwell B.; Zhao, Yuan; Zhang, Yong-Hang; Zhao, Xin-Hao; Campbell, Calli M.

    2015-07-27

    The interface recombination velocities of CdTe/Mg{sub x}Cd{sub 1−x}Te double heterostructure (DH) samples with different CdTe layer thicknesses and Mg compositions are studied using time-resolved photoluminescence measurements. A lowest interface recombination velocity of 30 ± 10 cm/s has been measured for the CdTe/Mg{sub 0.46}Cd{sub 0.54}Te interface, and a longest carrier lifetime of 0.83 μs has been observed for the studied DHs. These values are very close to the best reported numbers for GaAs/AlGaAs DHs. The impact of carrier escape through thermionic emission over the MgCdTe barrier on the recombination process in the DHs is also studied.

  10. Chromosome doubling method

    DOE Patents [OSTI]

    Kato, Akio

    2006-11-14

    The invention provides methods for chromosome doubling in plants. The technique overcomes the low yields of doubled progeny associated with the use of prior techniques for doubling chromosomes in plants such as grasses. The technique can be used in large scale applications and has been demonstrated to be highly effective in maize. Following treatment in accordance with the invention, plants remain amenable to self fertilization, thereby allowing the efficient isolation of doubled progeny plants.

  11. Double field theory inspired cosmology

    SciTech Connect (OSTI)

    Wu, Houwen; Yang, Haitang E-mail: hyanga@scu.edu.cn

    2014-07-01

    Double field theory proposes a generalized spacetime action possessing manifest T-duality on the level of component fields. We calculate the cosmological solutions of double field theory with vanishing Kalb-Ramond field. It turns out that double field theory provides a more consistent way to construct cosmological solutions than the standard string cosmology. We construct solutions for vanishing and non-vanishing symmetry preserving dilaton potentials. The solutions assemble the pre- and post-big bang evolutions in one single line element. Our results show a smooth evolution from an anisotropic early stage to an isotropic phase without any special initial conditions in contrast to previous models. In addition, we demonstrate that the contraction of the dual space automatically leads to both an inflation phase and a decelerated expansion of the ordinary space during different evolution stages.

  12. Double Flash | Open Energy Information

    Open Energy Info (EERE)

    Double Flash Jump to: navigation, search Retrieved from "http:en.openei.orgwindex.php?titleDoubleFlash&oldid599606...

  13. West Valley Demonstration Project Contractor Reaches 2 Million...

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

    Demonstration Project Contractor Reaches 2 Million Safe Work Hours West Valley Demonstration Project Contractor Reaches 2 Million Safe Work Hours May 31, 2016 - 12:20pm Addthis A ...

  14. In-Reach/Outreach Activities | Y-12 National Security Complex

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

    In-Reach/Outreach ... In-Reach/Outreach Activities For in-reach activities, the SPO holds meetings and conducts numerous presentations each year for Y-12's operations, divisions, and management team to provide training and guidance for buyers concerning socioeconomic program policy, procedures, goals, and federal regulations that govern the program. Other in-reach activities may also include posting the capabilities and accomplishments of small businesses in Y-12's newsletter, The Y-12 Times.

  15. Reaching Site Closure for Groundwater under Multiple Regulatory Agencies

    SciTech Connect (OSTI)

    Glucksberg, N.; Shephard, Gene; Peters, Jay; Couture, B.

    2008-01-15

    Groundwater at the Connecticut Yankee Atomic Power Company (CYAPCO) Haddam Neck Plant (HNP) requires investigation of both radionuclides and chemical constituents in order to achieve closure. Cleanup criteria for groundwater are regulated both by federal and state agencies. These requirements vary in both numerical values as well as the duration of post remediation monitoring. The only consistent requirement is the development of a site conceptual model and an understanding of the hydrogeologic conditions that will govern contaminant transport and identify potential receptors. To successfully reach closure under each agency, it is paramount to understand the different requirements during the planning stages of the investigation. Therefore, the conceptual site model, groundwater transport mechanisms, and potential receptors must be defined. Once the hydrogeology is understood, a long term groundwater program can then be coordinated to meet each regulatory agency requirement to both terminate the NRC license and reach site closure under RCRA. Based on the different criteria, the CTDEP-LR (or RSR criteria) are not only bounding, but also requires the longest duration. As with most decommissioning efforts, regulatory attention is focused on the NRC, however, with the recent industry initiatives based on concern of tritium releases to groundwater at other plants, it is likely that the USEPA and state agencies may continue to drive site investigations. By recognizing these differences, data quality objectives can include all agency requirements, thus minimizing rework or duplicative efforts. CYAPCO intends to complete groundwater monitoring for the NRC and CTDEP-RD by July 2007. However, because shallow remediations are still being conducted, site closure under USEPA and CTDEP-LR is projected to be late 2011.

  16. Reliability Estimation for Double Containment Piping

    SciTech Connect (OSTI)

    L. Cadwallader; T. Pinna

    2012-08-01

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

  17. A DOUBLE-PEAKED OUTBURST OF A 0535+26 OBSERVED WITH INTEGRAL, RXTE, AND SUZAKU

    SciTech Connect (OSTI)

    Caballero, I.; Barragan, L.; Wilms, J.; Kreykenbohm, I.; Ferrigno, C.; Klochkov, D.; Suchy, S.; Santangelo, A.; Staubert, R.; Zurita Heras, J. A.; Kretschmar, P.; Fuerst, F.; Rothschild, R.; Finger, M. H.; Camero-Arranz, A.; Makishima, K.; Enoto, T.; Iwakiri, W.; and others

    2013-02-20

    The Be/X-ray binary A 0535+26 showed a normal (type I) outburst in 2009 August. It is the fourth in a series of normal outbursts associated with the periastron, but is unusual because it presented a double-peaked light curve. The two peaks reached a flux of {approx}450 mCrab in the 15-50 keV range. We present results of the timing and spectral analysis of INTEGRAL, RXTE, and Suzaku observations of the outburst. The energy-dependent pulse profiles and their evolution during the outburst are studied. No significant differences with respect to other normal outbursts are observed. The centroid energy of the fundamental cyclotron line shows no significant variation during the outburst. A spectral hardening with increasing luminosity is observed. We conclude that the source is accreting in the sub-critical regime. We discuss possible explanations for the double-peaked outburst.

  18. Fuel Cell Technologies Office Reaches Major Patent Milestone | Department

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

    of Energy Fuel Cell Technologies Office Reaches Major Patent Milestone Fuel Cell Technologies Office Reaches Major Patent Milestone January 9, 2015 - 10:01am Addthis Fuel Cell Technologies Office Reaches Major Patent Milestone Sunita Satyapal Director, Fuel Cell Technologies Office Fuel cells are an emerging technology that can provide heat and electricity to buildings and power for vehicles while emitting nothing but water. To bring more high-impact fuel cell innovations to the marketplace,

  19. NNSA Reaches LEU Disposal Milestone | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration | (NNSA) Reaches LEU Disposal Milestone NNSA Reaches LEU Disposal Milestone Aiken, SC The National Nuclear Security Administration's reached an important milestone in its efforts to dispose of surplus weapons-usable material as the 100th shipment of low enriched uranium (LEU) departed the Savannah River Site (SRS) in South Carolina for Nuclear Fuels Services in Erwin, Tennessee, four months ahead of schedule. The shipment is part of the Off-Specification HEU Blend Down

  20. Renewable Acid-hydrolysis Condensation Hydrotreating (REACH) Pilot Plant

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

    Project Peer Review Renewable Acid-hydrolysis Condensation Hydrotreating (REACH) Pilot Plant March 23, 2015 Technology Area Review Karl Seck Mercurius Biofuels This presentation does not contain any proprietary, confidential, or otherwise restricted information Goal Statement * Design, build, and operate a pilot plant to scale-up the Mercurius REACH TM process. * REACH TM - a novel technology that efficiently converts cellulosic biomass into drop-in hydrocarbon jet fuel and diesel. * Provides an

  1. Geothermal Data Repository Reaches 500 Submissions | Department of Energy

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

    Data Repository Reaches 500 Submissions Geothermal Data Repository Reaches 500 Submissions August 25, 2015 - 2:41pm Addthis Geothermal Data Repository Reaches 500 Submissions Arlene Anderson Technology Development Manager, Geothermal Technologies Program A map of the United States highlighting the locations of GDR users. Critical data about the subsurface is added to the GDR from sites all across the country. Credit: Jon Weers, NREL. July 15 marked an important milestone for the Energy

  2. Hanford Landfill Reaches 15 Million Tons Disposed - Waste Disposal...

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

    from reaching the groundwater and the Columbia River. ERDF receives contaminated soil, demolition debris, and solid waste from cleanup operations across the...

  3. Construction on Pantex High Explosives Pressing Facility Reaches...

    National Nuclear Security Administration (NNSA)

    Construction on Pantex High Explosives Pressing Facility Reaches 85% Mark January 03, 2014 ... passed the 85 percent construction completion mark and is on schedule and under budget. ...

  4. Department of Energy's Paducah Site Reaches Million-Hour Safety...

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

    environmental risk. The LATA Environmental Services of Kentucky Team, the Department's prime cleanup contractor, in October reached a milestone of 1 million hours without a lost...

  5. Minimal Doubling and Point Splitting

    SciTech Connect (OSTI)

    Creutz, M.

    2010-06-14

    Minimally-doubled chiral fermions have the unusual property of a single local field creating two fermionic species. Spreading the field over hypercubes allows construction of combinations that isolate specific modes. Combining these fields into bilinears produces meson fields of specific quantum numbers. Minimally-doubled fermion actions present the possibility of fast simulations while maintaining one exact chiral symmetry. They do, however, introduce some peculiar aspects. An explicit breaking of hyper-cubic symmetry allows additional counter-terms to appear in the renormalization. While a single field creates two different species, spreading this field over nearby sites allows isolation of specific states and the construction of physical meson operators. Finally, lattice artifacts break isospin and give two of the three pseudoscalar mesons an additional contribution to their mass. Depending on the sign of this mass splitting, one can either have a traditional Goldstone pseudoscalar meson or a parity breaking Aoki-like phase.

  6. New Stream-Reach Hydropower Development Fact Sheet

    Office of Energy Efficiency and Renewable Energy (EERE)

    Funded by the Department of Energy and executed by Oak Ridge National Laboratory, the New Stream-reach Development (NSD) project implemented an advanced geo-spatial approach to analyze the potential for new hydropower development in U.S. stream-reaches that do not currently have hydroelectric facilities or other forms of infrastructure.

  7. EERE Success Story-Milestone Reached: New Process Reduces Cost...

    Office of Environmental Management (EM)

    Biofuel Production from Bio-Oil Upgrading EERE Success Story-Milestone Reached: New Process Reduces Cost and Risk of Biofuel Production from Bio-Oil Upgrading May 12, 2015 - ...

  8. Former Worker Program Reaches 100,000 Screening Milestone | Department...

    Office of Environmental Management (EM)

    Exams are offered at clinics in communities near DOE sites, as well as through a large ... Addthis Related Articles Former Worker Program Reaches 100,000 Screening Milestone 2014 ...

  9. DOE Moab Project Reaches Halfway Mark in Mill Tailings Removal...

    Office of Environmental Management (EM)

    The U.S. Department of Energy (DOE) has reached 8 million tons of uranium mill tailings removed from the Moab site in Utah under the Uranium Mill Tailings Remedial Action Project. ...

  10. Wind Turbine Inspection Technology Reaches New Heights | GE Global...

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

    Wind Turbine Inspection Technology Reaches New Heights Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new window) Click to share (Opens in new ...

  11. STEM Mentors Reach Nearly 300 Western Kentucky Sixth Graders

    Broader source: Energy.gov [DOE]

    PADUCAH, Ky. – EM is reaching out to public middle schools in the City of Paducah and McCracken and Ballard counties to encourage local students to study science, technology, engineering, and math (STEM).

  12. Department of Energy reaches an agreement in principle on the...

    Energy Savers [EERE]

    The SSFL, owned by the Boeing Company is located 30 miles north of Los Angeles, California... DOE and NASA Reach Cleanup Agreements with the State of California for the Santa Susana ...

  13. Biomass Power Generation Market Capacity is Estimated to Reach...

    Open Energy Info (EERE)

    Biomass Power Generation Market Capacity is Estimated to Reach 122,331.6 MW by 2022 Home > Groups > Renewable Energy RFPs Wayne31jan's picture Submitted by Wayne31jan(150)...

  14. Floating Production Systems Market Is Expected To Reach USD 38...

    Open Energy Info (EERE)

    Production Systems Market Is Expected To Reach USD 38,752.7 Million Globally By 2019 Home > Groups > Future of Condition Monitoring for Wind Turbines Wayne31jan's picture...

  15. Michigan Saves Reaches $50 Million Investment Milestone | Department...

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

    Michigan Saves Reaches 50 Million Investment Milestone Photo of a group of people holding ... and business owners-who are making the choice to improve the health, safety, efficiency ...

  16. Milestone Reached: New Process Reduces Cost and Risk of Biofuel...

    Office of Environmental Management (EM)

    Risk of Biofuel Production from Bio-Oil Upgrading Milestone Reached: New Process Reduces Cost and Risk of Biofuel Production from Bio-Oil Upgrading May 6, 2015 - 11:29am Addthis ...

  17. New Stream-Reach Hydropower Development (NSD) Fact Sheet

    SciTech Connect (OSTI)

    2014-04-25

    This fact sheet explores the more than 65 gigawatts (GW) of sustainable hydropower potential in U.S. stream-reaches, according to the hydropower resource assessment funded by DOE and executed by Oak Ridge National Laboratory.

  18. New Stream-reach Development (NSD) Fact Sheet

    Office of Energy Efficiency and Renewable Energy (EERE)

    This fact sheet explores the more than 65 gigawatts (GW) of sustainable hydropower potential in U.S. stream-reaches, according to the hydropower resource assessment funded by DOE and executed by Oak Ridge National Laboratory.

  19. Better Buildings Challenge Partners Reach New Levels of Energy Savings |

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

    Department of Energy Buildings Challenge Partners Reach New Levels of Energy Savings Better Buildings Challenge Partners Reach New Levels of Energy Savings May 28, 2015 - 5:53pm Addthis On-site renewable energy generation from these wind turbines, assessing energy efficiency in all new equipment before purchase, and high efficiency lighting and thermal energy efficiency improvements are all examples how our Better Buildings Challenge (BBC) partner HARBEC in upstate New York has already

  20. Michigan Saves Reaches $50 Million Investment Milestone | Department of

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

    Energy Michigan Saves Reaches $50 Million Investment Milestone Michigan Saves Reaches $50 Million Investment Milestone Photo of a group of people holding a cake and looking toward the camera. Michigan families and businesses are making smart investments in energy efficiency, from the western tip of the Upper Peninsula to the state's eastern coast of Lake Erie. In June, Michigan Saves celebrated a significant milestone: $50 million in energy investments. The home energy upgrade program, which

  1. Dr. Bhaskaran Gopalakrishnan Extends the Reach of the West Virginia

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

    University Industrial Assessment Center | Department of Energy Technical Assistance » Industrial Assessment Centers (IACs) » Dr. Bhaskaran Gopalakrishnan Extends the Reach of the West Virginia University Industrial Assessment Center Dr. Bhaskaran Gopalakrishnan Extends the Reach of the West Virginia University Industrial Assessment Center Discussing energy audit results — Dr. Bhaskaran Gopalakrishnan (left) and Dr. Ed Crowe (right, Engineering Scientist at West Virginia University)

  2. Supercomputers Help a Catalyst Reach its Full Potential

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

    Supercomputers Help a Catalyst Reach its Full Potential Supercomputers Help a Catalyst Reach its Full Potential Placing Protons Prevents Wasteful Profligate Reactions April 23, 2013 Contact: Linda Vu, lvu@lbl.gov +1 510 495 2402 protondeliverystory.jpg While one configuration (endo/endo) of a popular nickel catalyst can produce thousands of hydrogen molecules a second, the other forms that place the proton farther from the center are slower and less efficient. Chemical reactions facilitated by

  3. America's Wind Industry Reaches Record Highs | Department of Energy

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

    Wind Industry Reaches Record Highs America's Wind Industry Reaches Record Highs August 6, 2013 - 8:01am Addthis Our latest Infographic highlights key findings from the 2012 Wind Technologies Market Report. | Infographic by <a href="/node/379579">Sarah Gerrity</a>. Our latest Infographic highlights key findings from the 2012 Wind Technologies Market Report. | Infographic by Sarah Gerrity. Dr. Ernest Moniz Dr. Ernest Moniz Secretary of Energy LEARN MORE Watch our new video

  4. DOE Reaches $1.9M Settlement | Department of Energy

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

    Reaches $1.9M Settlement DOE Reaches $1.9M Settlement September 30, 2013 - 3:19pm Addthis The General Counsel's enforcement office settled an enforcement action against Ningbo Hicon International Industry Company, Ltd. for $1,927,097. Ningbo Hicon is a Chinese company that manufactures consumer refrigeration products for a variety of private labelers. Ningbo Hicon agreed to the settlement after manufacturing and distributing chest freezers that consumed about 30% more energy than permitted under

  5. DOE Reaches Settlements with Three Commercial Refrigeration Equipment

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

    Manufacturers | Department of Energy Reaches Settlements with Three Commercial Refrigeration Equipment Manufacturers DOE Reaches Settlements with Three Commercial Refrigeration Equipment Manufacturers March 1, 2016 - 6:20pm Addthis DOE settled enforcement actions against Utility Refrigerator, True Manufacturing, and Victory Refrigeration for distributing commercial refrigeration equipment in the United States that do not meet applicable energy conservation standards. As a part of the

  6. Venezuela to double Supermetanol

    SciTech Connect (OSTI)

    1997-04-23

    Pequiven, the petrochemical arm of Venezuelan state oil company PDVSA, is conducting feasibility studies to double the size of its 750,000-m.t./year Supermetanol methanol joint venture with Ecofuel at Jose. The twin unit would be onstream by the end of the decade and would increase Pequiven`s capacity to 2.3 million m.t./year.

  7. Double resonator cantilever accelerometer

    DOE Patents [OSTI]

    Koehler, D.R.

    1982-09-23

    A digital quartz accelerometer includes a pair of spaced double-ended tuning forks fastened at one end to a base and at the other end through a spacer mass. Transverse movement of the resonator members stresses one and compresses the other, providing a differential frequency output which is indicative of acceleration.

  8. Double resonator cantilever accelerometer

    DOE Patents [OSTI]

    Koehler, Dale R.

    1984-01-01

    A digital quartz accelerometer includes a pair of spaced double-ended tuning forks fastened at one end to a base and at the other end through a spacer mass. Transverse movement of the resonator members stresses one and compresses the other, providing a differential frequency output which is indicative of acceleration.

  9. Neutrinoless double beta decay search with the NEMO 3 experiment

    SciTech Connect (OSTI)

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

    2008-11-23

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

  10. The effect of fluid flow on coiled tubing reach

    SciTech Connect (OSTI)

    Bhalla, K.; Walton, I.C.

    1996-12-31

    A critical parameter to the success of many coiled tubing (CT) operations in highly deviated or horizontal wells is the depth penetration that can be attained before the CT buckles and locks up. Achieving a desired depth is always critical in CT operations and attaining an additional reach of a few hundred feet can be crucial. This paper addresses the effect of fluid flow in the CT and in the CT/wellbore annulus on the state of force and stress in the CT, and thereby predicts its effect on the reach attainable by the CT. The flow of fluid through the CT and annulus between the CT and borehole modifies the pressures and the effective force which governs the mechanical stability of the CT. The net force per unit length due to fluid flow in the coiled tubing and annulus between the coiled tubing casing/well is calculated in terms of the shear stress and its effect on the onset of buckling and lockup is determined. The model is then implemented in a full tubing forces calculation and the effect of flowing fluids and producing fluids on reach is analyzed. The new model is utilized in the design of commercial jobs. The exact analytic model shows that fluid flow inside the CT has zero impact on reach, that downward flow in the annulus has a favourable impact, and upward flow in the annulus reduces the maximum attainable reach. Using the full tubing forces model, a coiled tubing job can be designed taking into account the flow of a fluid with a specified rheology, density and flow rate. Thus the feasibility of attaining a given reach can be more accurately determined. Results are presented in the form of the surface weight for commercial wells and compared to field jobs.

  11. WIPP Reaches Milestone „ First Disposal Room Filled

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

    WIPP Reaches Milestone - First Disposal Room Filled CARLSBAD, N.M., September 4, 2001 - The U.S. Department of Energy's (DOE) Carlsbad Field Office today announced that Room 7 of Panel 1 at the Waste Isolation Pilot Plant (WIPP), the first underground room used for disposal operations, has been filled to capacity with transuranic waste. The milestone was reached at about 3:30 p.m. on August 24, as Waste Handling personnel emplaced a shipment of waste from the Idaho National Engineering and

  12. Double Beta Decay Experiments

    SciTech Connect (OSTI)

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

    2011-11-23

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

  13. High-Temperature Falling Particle Receiver Reaches New Limits

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

    Falling Particle Receiver Reaches New Limits - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management

  14. NREL Helps Federal Agencies Reach New Efficiency Targets - News Feature |

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

    NREL Helps Federal Agencies Reach New Efficiency Targets August 19, 2015 Three people stand in front of solar panels on top of the NREL parking garage. NREL researchers, from left, Andy Walker, a principal engineer in the Integrated Applications Center's Engineering and Modeling Group; Kate Anderson, manager of the Engineering and Modeling Group; and Marguerite Kelly, manager of the Market Partnerships and Tools Group, are working to help federal agencies become more energy efficient as part

  15. Construction on Pantex High Explosives Pressing Facility Reaches 85% Mark |

    National Nuclear Security Administration (NNSA)

    National Nuclear Security Administration | (NNSA) Construction on Pantex High Explosives Pressing Facility Reaches 85% Mark January 03, 2014 Work on the National Nuclear Security Administration's (NNSA) High Explosives Pressing Facility at its Pantex Plant, located near Amarillo, Texas, this month passed the 85 percent construction completion mark and is on schedule and under budget. File 2014-01-03 NPO HEPF.docx NPO Press Releases September 2016 (1) August 2016 (1) May 2016 (1) February

  16. DOE Idaho site reaches 20-year cleanup milestone

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

    IDAHO FALLS, IDAHO, 83403 Media Contact: Brad Bugger (208) 526-0833 For Immediate Release: January 19, 2012 DOE Idaho site reaches 20-year cleanup milestone IDAHO FALLS, ID- In two decades of Superfund cleanup work, the U.S. Department of Energy's Idaho site has removed hundreds of thousands of cubic yards of radioactive and hazardously contaminated soils, excavated radioactive waste buried since the 1950s, removed three nuclear reactors and hundreds of buildings, completely closed three major

  17. DOE Reaches Settlement with Freezer Manufacturer | Department of Energy

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

    Settlement with Freezer Manufacturer DOE Reaches Settlement with Freezer Manufacturer May 29, 2015 - 9:20am Addthis The General Counsel's enforcement office settled an enforcement action against Perlick Corporation for $168,200. Perlick agreed to the settlement after manufacturing and distributing 841 units of freezer model HP24F. DOE found that the model consumed over 20% more energy than permitted under the applicable energy conservation standard. Documents related to the distribution of

  18. Comparison of Two Types of Double-J Ureteral Stents that Differ in Diameter and the Existence of Multiple Side Holes along the Straight Portion in Malignant Ureteral Strictures

    SciTech Connect (OSTI)

    Song, Myung Gyu Seo, Tae-Seok Lee, Chang Hee Kim, Kyeong Ah; Kim, Jun Suk Oh, Sang Cheul; Lee, Jae-Kwan

    2015-06-15

    PurposeThis study was decided to evaluate the impact of diameter and the existences of multiple side holes along the straight portion of double-J ureteral stents (DJUS) on early dysfunction of stents placed for malignant ureteral strictures.MethodsBetween April 2007 and December 2011, 141 DJUSs were placed via a percutaneous nephrostomy (PCN) tract in 110 consecutive patients with malignant ureteral strictures. 7F DJUSs with multiple side holes in the straight portion were placed in 58 ureters of 43 patients (Group 1). 8F DJUSs with three side holes in the proximal 2-cm of the straight portion were placed in 83 ureters of 67 patients (Group 2). The incidence of early DJUS dysfunction was compared between the two groups, and nephrostographic findings were evaluated in the cases of early dysfunction.ResultsEarly dysfunction of the DJUS was noted in 14 of 58 patients (24.1 %) in Group 1, which was significantly higher (p = 0.001) than in Group 2 in which only 1 of 83 patients (1.2 %) had early dysfunction of the DJUS. Nephrostographic findings of early dysfunction included dilatation of the pelvicalyceal system, filling defects in the ureteral stent, and no passage of contrast media into the urinary bladder.ConclusionsIn malignant ureteral strictures, multiple side holes in the straight portion of the 7-F DJUS seem to cause early dysfunction. The 8F DJUSs with three side holes in the proximal 2-cm of the straight portion may be superior at preventing early dysfunction.

  19. Molecular Engineering of Conjugated Polymers to Reach Higher Efficiency

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

    "Plastic" Solar Cells | MIT-Harvard Center for Excitonics Engineering of Conjugated Polymers to Reach Higher Efficiency "Plastic" Solar Cells November 12, 2010 at 3pm/36-428 Wei You University of North Carolina you.wei_001 abstract: The bulk heterojunction (BHJ) organic photovoltaic cells of regioregular poly(3-hexylthiophene) (RR-P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) represent one of the most successful systems with reproducible efficiencies

  20. Defining a controller architecture for the Long-Reach Manipulator

    SciTech Connect (OSTI)

    Ford, W.E.

    1994-06-01

    To draft a procurement specification for the Long-Reach Manipulator (LRM), the benefits and limitations of the various robotic control system architectures available need to be determined. This report identifies and describes the advantages and potential disadvantages of using an open control system versus a closed (or proprietary) system, focusing on integration of interfaces for sensors, end effectors, tooling, and operator interfaces. In addition, the various controls methodologies of several recent systems are described. Finally, the reasons behind the recommendation to procure an open control system are discussed.

  1. Reaching the hip-hop generation: Final (symposium proceedings) report

    SciTech Connect (OSTI)

    Not Available

    1993-05-01

    The goal of this final (closing) report is to capture the flavor of the symposium held March 1 and 2, 1993 in New York City convened by Motivational Educational Entertainment, Inc. (MEE), a black-owned communications research, consulting, and video production company based in Philadelphia, Pennsylvania. The mission of MEE is to understand, reach, and positively affect inner-city youth. Traditional communication approaches from mainstream sources to at-risk youth often don`t account for the unique way youth communicate among themselves and how they relate to the media. This understanding, however, is crucial. To understand youth communication, the people who create and send both entertaining and educational messages to urban youth must be brought into the dialogue. The meeting in New York was intended to provide an important opportunity for senders to meet and evaluate the appropriateness and effectiveness of their messages. In addition, the MEE symposium provided a forum for the continuing public debate about what needs to be done to reach today`s urban teens. Included in this document is a description of symposium goals/objectives, symposium activities, the reaction to and analysis of the symposium, recommendations for future MEE courses of action, and an appendix containing copies of press articles.

  2. Reach the Bottom Line of the Sbottom Search

    SciTech Connect (OSTI)

    Alvarez, Ezequiel; Bai, Yang

    2012-05-22

    We propose a new search strategy for directly-produced sbottoms at the LHC with a small mass splitting between the sbottom and its decayed stable neutralino. Our search strategy is based on boosting sbottoms through an energetic initial state radiation jet. In the final state, we require a large missing transverse energy and one or two b-jets besides the initial state radiation jet. We also define a few kinematic variables to further increase the discovery reach. For the case that the sbottom mainly decays into the bottom quark and the stable neutralino, we have found that even for a mass splitting as small as 10 GeV sbottoms with masses up to around 400 GeV can be excluded at the 95% confidence level with 20 inverse femtobarn data at the 8 TeV LHC.

  3. Double acting bit holder

    DOE Patents [OSTI]

    Morrell, Roger J.; Larson, David A.; Ruzzi, Peter L.

    1994-01-01

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

  4. Identifying high energy density stream-reaches through refined geospatial resolution in hydropower resource assessment

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Pasha, M. Fayzul K.; Yang, Majntxov; Yeasmin, Dilruba; Saetern, Sen; Kao, Shih -Chieh; Smith, Brennan T.

    2016-01-07

    Benefited from the rapid development of multiple geospatial data sets on topography, hydrology, and existing energy-water infrastructures, the reconnaissance level hydropower resource assessment can now be conducted using geospatial models in all regions of the US. Furthermore, the updated techniques can be used to estimate the total undeveloped hydropower potential across all regions, and may eventually help identify further hydropower opportunities that were previously overlooked. To enhance the characterization of higher energy density stream-reaches, this paper explored the sensitivity of geospatial resolution on the identification of hydropower stream-reaches using the geospatial merit matrix based hydropower resource assessment (GMM-HRA) model. GMM-HRAmore » model simulation was conducted with eight different spatial resolutions on six U.S. Geological Survey (USGS) 8-digit hydrologic units (HUC8) located at three different terrains; Flat, Mild, and Steep. The results showed that more hydropower potential from higher energy density stream-reaches can be identified with increasing spatial resolution. Both Flat and Mild terrains exhibited lower impacts compared to the Steep terrain. Consequently, greater attention should be applied when selecting the discretization resolution for hydropower resource assessments in the future study.« less

  5. DOE Reaches Recovery Act Goal With Cleanup of All Legacy Transuranic...

    Office of Environmental Management (EM)

    Reaches Recovery Act Goal With Cleanup of All Legacy Transuranic Waste at Sandia National Laboratories DOE Reaches Recovery Act Goal With Cleanup of All Legacy Transuranic Waste at ...

  6. Turkey Marine Lubricants Market is Expected to Reach USD 177...

    Open Energy Info (EERE)

    are primarily categorized into seven different applications including engine oils, hydraulic oils, grease, turbine oils, gear oils, compressor oils and heat transfer fluids....

  7. Energy levels of double triangular graphene quantum dots

    SciTech Connect (OSTI)

    Liang, F. X.; Jiang, Z. T. Zhang, H. Y.; Li, S.; Lv, Z. T.

    2014-09-28

    We investigate theoretically the energy levels of the coupled double triangular graphene quantum dots (GQDs) based on the tight-binding Hamiltonian model. The double GQDs including the ZZ-type, ZA-type, and AA-type GQDs with the two GQDs having the zigzag or armchair boundaries can be coupled together via different interdot connections, such as the direct coupling, the chains of benzene rings, and those of carbon atoms. It is shown that the energy spectrum of the coupled double GQDs is the amalgamation of those spectra of the corresponding two isolated GQDs with the modification triggered by the interdot connections. The interdot connection is inclined to lift up the degeneracies of the energy levels in different degree, and as the connection changes from the direct coupling to the long chains, the removal of energy degeneracies is suppressed in ZZ-type and AA-type double GQDs, which indicates that the two coupled GQDs are inclined to become decoupled. Then we consider the influences on the spectra of the coupled double GQDs induced by the electric fields applied on the GQDs or the connection, which manifests as the global spectrum redistribution or the local energy level shift. Finally, we study the symmetrical and asymmetrical energy spectra of the double GQDs caused by the substrates supporting the two GQDs, clearly demonstrating how the substrates affect the double GQDs' spectrum. This research elucidates the energy spectra of the coupled double GQDs, as well as the mechanics of manipulating them by the electric field and the substrates, which would be a significant reference for designing GQD-based devices.

  8. Attosecond Double-Slit Experiment

    SciTech Connect (OSTI)

    Lindner, F.; Schaetzel, M.G.; Baltuska, A.; Goulielmakis, E.; Walther, H.; Krausz, F.; Milosevic, D.B.; Bauer, D.; Becker, W.; Paulus, G.G.

    2005-07-22

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

  9. Double stranded nucleic acid biochips

    DOE Patents [OSTI]

    Chernov, Boris; Golova, Julia

    2006-05-23

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

  10. The double well mass filter

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Gueroult, Renaud; Rax, Jean -Marcel; Fisch, Nathaniel J.

    2014-02-03

    Various mass filter concepts based on rotating plasmas have been suggested with the specific purpose of nuclear waste remediation. We report on a new rotating mass filter combining radial separation with axial extraction. Lastly, the radial separation of the masses is the result of a “double-well” in effective radial potential in rotating plasma with a sheared rotation profile.

  11. DOE and NASA Reach Cleanup Agreements with the State of California...

    Energy Savers [EERE]

    NASA Reach Cleanup Agreements with the State of California for the Santa Susana Field Laboratory DOE and NASA Reach Cleanup Agreements with the State of California for the Santa ...

  12. Changing the Way We Fly: Biofuels Made from Waste Gases Reaching...

    Energy Savers [EERE]

    Changing the Way We Fly: Biofuels Made from Waste Gases Reaching New Heights with Airline Industry Changing the Way We Fly: Biofuels Made from Waste Gases Reaching New Heights with ...

  13. Microsoft PowerPoint - Hanford_Reach_Natl_Monument_300 sq.ppt [Compatibility Mode]

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

    Reach National Monument The Hanford Reach National Monument encompasses 300 square miles around the Hanford Site Part of the effort to reduce the active around the Hanford Site. Part of the effort to reduce the active footprint of the site involves cleanup of debris sites on Rattlesnake Mountain and the Fitzner-Eberhardt Arid Lands Ecology Reserve. The Hanford Reach was protected by Presidential proclamation in 2000 Hanford Reach was protected by Presidential proclamation in 2000. Past military

  14. On the time needed to reach an equilibrium structure of the radiation belts

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ripoll, J. -F.; Loran, V.; Cunningham, Gregory Scott; Reeves, Geoffrey D.; Shprits, Y. Y.

    2016-06-04

    In this paper, we complement the notion of equilibrium states of the radiation belts with a discussion on the dynamics and time needed to reach equilibrium. We solve for the equilibrium states obtained using 1D radial diffusion with recently developed hiss and chorus lifetimes at constant values of Kp = 1, 3 and 6. We find that the equilibrium states at moderately low Kp, when plotted vs L-shell (L) and energy (E), display the same interesting S-shape for the inner edge of the outer belt as recently observed by the Van Allen Probes. The S-shape is also produced as themore » radiation belts dynamically evolve toward the equilibrium state when initialized to simulate the buildup after a massive dropout or to simulate loss due to outward diffusion from a saturated state. Physically, this shape, intimately linked with the slot structure, is due to the dependence of electron loss rate (originating from wave-particle interactions) on both energy and L-shell. Equilibrium electron flux profiles are governed by the Biot number (τDiffusion/τloss), with large Biot number corresponding to low fluxes and low Biot number to large fluxes. The time it takes for the flux at a specific (L, E) to reach the value associated with the equilibrium state, starting from these different initial states, is governed by the initial state of the belts, the property of the dynamics (diffusion coefficients), and the size of the domain of computation. Its structure shows a rather complex scissor form in the (L, E) plane. The equilibrium value (phase space density or flux) is practically reachable only for selected regions in (L, E) and geomagnetic activity. Convergence to equilibrium requires hundreds of days in the inner belt for E > 300 keV and moderate Kp (≤3). It takes less time to reach equilibrium during disturbed geomagnetic conditions (Kp ≥ 3), when the system evolves faster. Restricting our interest to the slot region, below L = 4, we find that only small regions in (L, E) space

  15. Alternative Fuels Data Center: AT&T Fleet Reaches Milestone of 8,000 CNG

    Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

    Vehicles AT&T Fleet Reaches Milestone of 8,000 CNG Vehicles to someone by E-mail Share Alternative Fuels Data Center: AT&T Fleet Reaches Milestone of 8,000 CNG Vehicles on Facebook Tweet about Alternative Fuels Data Center: AT&T Fleet Reaches Milestone of 8,000 CNG Vehicles on Twitter Bookmark Alternative Fuels Data Center: AT&T Fleet Reaches Milestone of 8,000 CNG Vehicles on Google Bookmark Alternative Fuels Data Center: AT&T Fleet Reaches Milestone of 8,000 CNG

  16. Spawning Habitat Studies of Hanford Reach Fall Chinook Salmon (Oncorhynchus tshawytscha), Final Report.

    SciTech Connect (OSTI)

    Geist, David R.; Arntzen, Evan V.; Chien, Yi-Ju

    2009-03-02

    agricultural and industrial development. In some cases, the riverbed is armored such that it is more difficult for spawners to move, while in other cases the intrusion of fine sediment into spawning gravels has reduced water flow to sensitive eggs and young fry. Recovery of fall Chinook salmon populations may involve habitat restoration through such actions as dam removal and reservoir drawdown. In addition, habitat protection will be accomplished through set-asides of existing high-quality habitat. A key component to evaluating these actions is quantifying the salmon spawning habitat potential of a given river reach so that realistic recovery goals for salmon abundance can be developed. Quantifying salmon spawning habitat potential requires an understanding of the spawning behavior of Chinook salmon, as well as an understanding of the physical habitat where these fish spawn. Increasingly, fish biologists are recognizing that assessing the physical habitat of riverine systems where salmon spawn goes beyond measuring microhabitat like water depth, velocity, and substrate size. Geomorphic features of the river measured over a range of spatial scales set up the physical template upon which the microhabitat develops, and successful assessments of spawning habitat potential incorporate these geomorphic features. We had three primary objectives for this study. The first objective was to determine the relationship between physical habitats at different spatial scales and fall Chinook salmon spawning locations. The second objective was to estimate the fall Chinook salmon redd capacity for the Reach. The third objective was to suggest a protocol for determining preferable spawning reaches of fall Chinook salmon. To ensure that we collected physical data within habitat that was representative of the full range of potential spawning habitat, the study area was stratified based on geomorphic features of the river using a two-dimensional river channel index that classified the river cross

  17. Green Future Double Barrel House

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

    University Green Future Double Barrel House DOE Race to Zero Student Competition 2016 Sean Benson Team Leader - Net Zero Energy Design I & II Bachelor of Science in Architecture, Dec 2016 Alexis Borman Net Zero Energy Design II Bachelor of Science in Architecture, May 2016 Christopher Brown AIA COTE, Net Zero Energy Design I & II Bachelor of Science in Architecture, May 2016 Devonta Magee Net Zero Energy Design II Bachelor of Science in Architecture, Aug 2016 Yasmine Parker Net Zero

  18. Doubling Geothermal Generation Capacity by 2020: A Strategic...

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

    Doubling Geothermal Generation Capacity by 2020: A Strategic Analysis Doubling Geothermal Generation Capacity by 2020: A Strategic Analysis PDF icon NREL Doubling Geothermal ...

  19. Pair extended coupled cluster doubles

    SciTech Connect (OSTI)

    Henderson, Thomas M.; Scuseria, Gustavo E.; Bulik, Ireneusz W.

    2015-06-07

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

  20. Large Hadron Collider Probe of Supersymmetric Neutrinoless Double-Beta-Decay Mechanism

    SciTech Connect (OSTI)

    Allanach, B. C.; Kom, C. H.; Paes, H. [DAMTP, University of Cambridge, Wilberforce Road, Cambridge, CB3 0WA (United Kingdom); Cavendish Laboratory, J. J. Thomson Avenue, Cambridge CB3 0HE (United Kingdom); Fakultaet fuer Physik, Technische Universitaet Dortmund, D-44221, Dortmund (Germany)

    2009-08-28

    In the minimal supersymmetric extension to the standard model, a nonzero lepton number violating coupling {lambda}{sub 111}{sup '} predicts both neutrinoless double-beta-decay and resonant single slepton production at the LHC. We show that, in this case, if neutrinoless double beta decay is discovered in the next generation of experiments, there exist good prospects to observe single slepton production at the LHC. Neutrinoless double beta decay could otherwise result from a different source (such as a nonzero Majorana neutrino mass). Resonant single slepton production at the LHC can therefore discriminate between the {lambda}{sub 111}{sup '} neutrinoless double-beta-decay mechanism and others.

  1. Double-{beta} decay Q value of {sup 150}Nd

    SciTech Connect (OSTI)

    Kolhinen, V. S.; Eronen, T.; Gorelov, D.; Hakala, J.; Jokinen, A.; Kankainen, A.; Moore, I. D.; Rissanen, J.; Saastamoinen, A.; Suhonen, J.; Aeystoe, J. [Department of Physics, P. O. Box 35 (YFL), FI-40014 University of Jyvaeskylae (Finland)

    2010-08-15

    The double-{beta} decay Q value of {sup 150}Nd was determined by using the JYFLTRAP Penning trap mass spectrometer. The measured mass difference between {sup 150}Nd and {sup 150}Sm is 3371.38(20) keV. This new value deviates by 3.7 keV from the previously adopted value of 3367.7(22) keV and is a factor of 10 more precise. Accurate knowledge of this Q value is important because {sup 150}Nd is a primary candidate to be used in the search for neutrinoless double-{beta} decay modes in several experiments.

  2. Evaluation of the uranium double spike technique for environmental monitoring

    SciTech Connect (OSTI)

    Hemberger, P.H.; Rokop, D.J.; Efurd, D.W.; Roensch, F.R.; Smith, D.H.; Turner, M.L.; Barshick, C.M.; Bayne, C.K.

    1998-01-01

    Use of a uranium double spike in analysis of environmental samples showed that a {sup 235}U enrichment of 1% ({sup 235}U/{sup 238}U = 0.00732) can be distinguished from natural ({sup 235}U/{sup 238}U = 0.00725). Experiments performed jointly at Los Alamos National Laboratory (LANL) and Oak Ridge National Laboratory (ORNL) used a carefully calibrated double spike of {sup 233}U and {sup 236}U to obtain much better precision than is possible using conventional analytical techniques. A variety of different sampling media (vegetation and swipes) showed that, provided sufficient care is exercised in choice of sample type, relative standard deviations of less than {+-} 0.5% can be routinely obtained. This ability, unavailable without use of the double spike, has enormous potential significance in the detection of undeclared nuclear facilities.

  3. Spin projection with double hybrid density functional theory

    SciTech Connect (OSTI)

    Thompson, Lee M.; Hratchian, Hrant P.

    2014-07-21

    A spin projected double-hybrid density functional theory is presented that accounts for different scaling of opposite and same spin terms in the second order correction. This method is applied to three dissociation reactions which in the unprojected formalism exhibit significant spin contamination with higher spin states. This gives rise to a distorted potential surface and can lead to poor geometries and energies. The projected method presented is shown to improve the description of the potential over unprojected double hybrid density functional theory. Comparison is made with the reference states of the two double hybrid functionals considered here (B2PLYP and mPW2PLYP) in which the projected potential surface is degraded by an imbalance in the description of dynamic and static correlation.

  4. Stream-reach Identification for New Run-of-River Hydropower Development through a Merit Matrix Based Geospatial Algorithm

    SciTech Connect (OSTI)

    Pasha, M. Fayzul K.; Yeasmin, Dilruba; Kao, Shih-Chieh; Hadjerioua, Boualem; Wei, Yaxing; Smith, Brennan T

    2014-01-01

    Even after a century of development, the total hydropower potential from undeveloped rivers is still considered to be abundant in the United States. However, unlike evaluating hydropower potential at existing hydropower plants or non-powered dams, locating a feasible new hydropower plant involves many unknowns, and hence the total undeveloped potential is harder to quantify. In light of the rapid development of multiple national geospatial datasets for topography, hydrology, and environmental characteristics, a merit matrix based geospatial algorithm is proposed to help identify possible hydropower stream-reaches for future development. These hydropower stream-reaches sections of natural streams with suitable head, flow, and slope for possible future development are identified and compared using three different scenarios. A case study was conducted in the Alabama-Coosa-Tallapoosa (ACT) and Apalachicola-Chattahoochee-Flint (ACF) hydrologic subregions. It was found that a merit matrix based algorithm, which is based on the product of hydraulic head, annual mean flow, and average channel slope, can help effectively identify stream-reaches with high power density and small surface inundation. The identified stream-reaches can then be efficiently evaluated for their potential environmental impact, land development cost, and other competing water usage in detailed feasibility studies . Given that the selected datasets are available nationally (at least within the conterminous US), the proposed methodology will have wide applicability across the country.

  5. Gen. Klotz thanks W76-1 team for reaching half way mark | National...

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

    Gen. Klotz thanks W76-1 team for reaching half way mark | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile...

  6. Overcoming Technical and Market Barriers for Distributed Wind Applications: Reaching the Mainstream; Preprint

    SciTech Connect (OSTI)

    Rhoads-Weaver, H.; Forsyth, T.

    2006-07-01

    This paper describes how the distributed wind industry must overcome hurdles including system costs and interconnection and installation restrictions to reach its mainstream market potential.

  7. Booster double harmonic setup notes

    SciTech Connect (OSTI)

    Gardner, C. J.

    2015-02-17

    The motivation behind implementing a booster double harmonic include the reduced transverse space charge force from a reduced peak beam current and reduced momentum spread of the beam, both of which can be achieved from flattening the RF bucket. RF capture and acceleration of polarized protons (PP) is first set up in the single harmonic mode with RF harmonic h=1. Once capture and acceleration have been set up in the single harmonic mode, the second harmonic system is brought on and programmed to operate in concert with the single harmonic system.

  8. Correlations and the neutrinoless double beta decay

    SciTech Connect (OSTI)

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

    2009-11-09

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

  9. Hydrodynamic Simulation of the Columbia River, Hanford Reach, 1940--2004

    SciTech Connect (OSTI)

    Waichler, Scott R.; Perkins, William A.; Richmond, Marshall C.

    2005-06-15

    Many hydrological and biological problems in the Columbia River corridor through the Hanford Site require estimates of river stage (water surface elevation) or river flow and velocity. Systematic collection of river stage data at locations in the Hanford Reach began in 1991, but many environmental projects need river stage information at unmeasured locations or over longer time periods. The Modular Aquatic Simulation System 1D (MASS1), a one-dimensional, unsteady hydrodynamic and water quality model, was used to simulate the Columbia River from Priest Rapids Dam to McNary Dam from 1940 to 2004, providing estimates of water surface elevation, volumetric flow rate, and flow velocity at 161 locations on the Hanford Reach. The primary input data were bathymetric/topographic cross sections of the Columbia River channel, flow rates at Priest Rapids Dam, and stage at McNary Dam. Other inputs included Yakima River and Snake River inflows. Available flow data at a gaging station just below Priest Rapids Dam was mean daily flow from 1940 to 1986 and hourly thereafter. McNary dam was completed in 1957, and hourly stage data are available beginning in 1975. MASS1 was run at an hourly timestep and calibrated and tested using 1991--2004 river stage data from six Hanford Reach locations (areas 100B, 100N, 100D, 100H, 100F, and 300). Manning's roughness coefficient in the Reach above each river recorder location was adjusted using an automated genetic algorithm and gradient search technique in three separate calibrations, corresponding to different data subsets, with minimization of mean absolute error as the objective. The primary calibration was based on 1999, a representative year, and included all locations. The first alternative calibration also used all locations but was limited in time to a high-flow period during spring and early summer of 1997. The second alternative calibration was based on 1999 and included only 300 Area stage data. Model goodness-of-fit for all years

  10. Double distributions and evolution equations

    SciTech Connect (OSTI)

    A.V. Radyushkin

    1998-05-01

    Applications of perturbative QCD to deeply virtual Compton scattering and hard exclusive meson electroproduction processes require a generalization of usual parton distributions for the case when long-distance information is accumulated in nonforward matrix elements < p{prime} {vert_bar}O(0,z){vert_bar}p > of quark and gluon light-cone operators. In their previous papers the authors used two types of nonperturbative functions parameterizing such matrix elements: double distributions F(x,y;t) and nonforward distribution functions F{sub {zeta}}(X;t). Here they discuss in more detail the double distributions (DD's) and evolution equations which they satisfy. They propose simple models for F(x,y;t=0) DD's with correct spectral and symmetry properties which also satisfy the reduction relations connecting them to the usual parton densities f(x). In this way, they obtain self-consistent models for the {zeta}-dependence of nonforward distributions. They show that, for small {zeta}, one can easily obtain nonforward distributions (in the X > {zeta} region) from the parton densities: F{sub {zeta}} (X;t=0) {approx} f(X{minus}{zeta}/2).

  11. Inner-shell and double ionization potentials of aminophenol isomers.

    SciTech Connect (OSTI)

    Kryzhevoi, N. V.; Santra, R.; Cederbaum, L. S.

    2011-01-01

    A comprehensive study of single and double core ionization potentials of the aminophenol molecule is reported. The role of relaxation, correlation, relativistic, and basis set effects in these potentials is clarified. Special attention is paid to the isomer dependence of the single and double core ionization potentials. Some of them are also compared with the respective values of the phenol and aniline molecules. It is shown that the core level single ionization potentials of the para-, meta-, and ortho-aminophenol molecules differ only slightly from each other, rendering these structural isomers challenging to distinguish for conventional x-ray photoelectron spectroscopy. In contrast, the energy needed to remove two core electrons from different atoms depends noticeably on the mutual arrangement and even on the relative orientations of the hydroxyl and amine groups. Together with the electrostatic repulsion between the two core holes, relaxation effects accompanying double core ionization play a crucial role here. The pronounced sensitivity of the double ionization potentials, therefore, enables a spectroscopic characterization of the electronic structure of aminophenol isomers by means of x-ray two-photon photoelectron spectroscopy.

  12. Double perovskite catalysts for oxidative coupling

    DOE Patents [OSTI]

    Campbell, Kenneth D.

    1991-01-01

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

  13. Department of Energy reaches an agreement in principle on the cleanup of

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

    the Santa Susana Field Lab site in Simi Valley | Department of Energy reaches an agreement in principle on the cleanup of the Santa Susana Field Lab site in Simi Valley Department of Energy reaches an agreement in principle on the cleanup of the Santa Susana Field Lab site in Simi Valley September 3, 2010 - 12:00am Addthis WASHINGTON, D.C. - The Department of Energy announced today that it has reached an agreement in principle with California's Department of Toxic Substances Control (DTSC)

  14. EERE Success Story-Milestone Reached: New Process Reduces Cost and Risk

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

    of Biofuel Production from Bio-Oil Upgrading | Department of Energy Reached: New Process Reduces Cost and Risk of Biofuel Production from Bio-Oil Upgrading EERE Success Story-Milestone Reached: New Process Reduces Cost and Risk of Biofuel Production from Bio-Oil Upgrading May 12, 2015 - 4:53pm Addthis Battelle-a nonprofit research and development organization that operates many of the national laboratories-reached an Energy Department project milestone to demonstrate at least 1,000 hours of

  15. Background Suppression Using Pulse Shape Analysis with a BEGe Detector for Neutrinoless Double Beta Decay Search with GERDA

    SciTech Connect (OSTI)

    Budjas, Dusan; Schoenert, Stefan [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Chkvorets, Oleg [Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, 69117 Heidelberg (Germany); Department of Physics, Laurentian University, Ramsey Lake Road, P3E 2C6 Sudbury, Ontario (Canada)

    2009-12-17

    A pulse shape analysis for distinguishing between double beta decay-like interactions and multiple-scattered photons was performed for the first time using a BEGe-type detector. This discrimination method is included in the research and development for the second phase of the GERDA experiment, since active background suppression techniques are necessary to reach sensitivity for the {sup 76}Ge neutrinoless double beta decay half life of >10{sup 26} years. A suppression of backgrounds in the energy region of interest around the {sup 76}Ge Q{sub {beta}}{sub {beta}} = 2039 keV is demonstrated, with (0.93{+-}0.08)% survival probability for events from {sup 60}Co, (21{+-}3)% for {sup 226}Ra, and (40{+-}2)% for {sup 228}Th. This performance is achieved with (89{+-}1)% acceptance of {sup 228}Th double escape events, which are analogous to double beta decay.

  16. Artificial Lift Systems Market is expected to reach USD 19,806...

    Open Energy Info (EERE)

    Artificial Lift Systems Market is expected to reach USD 19,806.8 Million by 2020 Home > Groups > Renewable Energy RFPs Wayne31jan's picture Submitted by Wayne31jan(150) Contributor...

  17. Oil Spill Management Market is Estimated to Reach USD 114,441...

    Open Energy Info (EERE)

    Oil Spill Management Market is Estimated to Reach USD 114,441.1 Million by 2020 Home > Groups > Renewable Energy RFPs Wayne31jan's picture Submitted by Wayne31jan(150) Contributor...

  18. Department of Energy’s Paducah Site Reaches Million-Hour Safety Milestone

    Broader source: Energy.gov [DOE]

    PADUCAH, KY – The U.S. Department of Energy’s Paducah Site has reached a million hours of safe work toward completing cleanup objectives to reduce environmental risk.

  19. Reaching Social Media Goals on Facebook, Twitter | OpenEI Community

    Open Energy Info (EERE)

    Reaching Social Media Goals on Facebook, Twitter Home > Groups > OpenEI Community Central Graham7781's picture Submitted by Graham7781(2017) Super contributor 4 March, 2010 - 14:44...

  20. Milestone Reached: New Process Reduces Cost and Risk of Biofuel Production from Bio-Oil Upgrading

    Broader source: Energy.gov [DOE]

    Battellea nonprofit research and development organization that operates many of the national laboratoriesreached an Energy Department project milestone to demonstrate at least 1,000 hours of bio...

  1. WIPP Workers Reach Two Million Man-Hours Without a Lost-Time...

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

    Workers Reach Two Million Man-Hours Without a Lost-Time Accident CARLSBAD, N.M., February ... a safety milestone Feb. 19 by working two million man-hours without a lost-time accident. ...

  2. Oil Shale Market is Estimated to Reach USD 7,400.70 Million by...

    Open Energy Info (EERE)

    Oil Shale Market is Estimated to Reach USD 7,400.70 Million by 2022 Home > Groups > Renewable Energy RFPs Wayne31jan's picture Submitted by Wayne31jan(150) Contributor 1 July, 2015...

  3. New Stream-reach Development: A Comprehensive Assessment of Hydropower Energy Potential in the United States

    SciTech Connect (OSTI)

    Kao, Shih-Chieh; McManamay, Ryan A; Stewart, Kevin M; Samu, Nicole M; Hadjerioua, Boualem; DeNeale, Scott T; Yeasmin, Dilruba; Pasha, M. Fayzul K.; Oubeidillah, Abdoul A; Smith, Brennan T

    2014-04-01

    The rapid development of multiple national geospatial datasets related to topography, hydrology, and environmental characteristics in the past decade have provided new opportunities for the refinement of hydropower resource potential from undeveloped stream-reaches. Through 2011 to 2013, the Oak Ridge National Laboratory (ORNL) was tasked by the Department of Energy (DOE) Water Power Program to evaluate the new stream-reach development (NSD) resource potential for more than 3 million US streams. A methodology was designed that contains three main components: (1) identification of stream-reaches with high energy density, (2) topographical analysis of stream-reaches to estimate inundated surface area and reservoir storage, and (3) environmental attribution to spatially join information related to the natural ecological systems, social and cultural settings, policies, management, and legal constraints to stream-reaches of energy potential. An initial report on methodology (Hadjerioua et al., 2013) was later reviewed and revised based on the comments gathered from two peer review workshops. After implementing the assessment across the entire United States, major findings were summarized in this final report. The estimated NSD capacity and generation, including both higher-energy-density (>1 MW per reach) and lower-energy-density (<1 MW per reach) stream-reaches is 84.7 GW, around the same size as the existing US conventional hydropower nameplate capacity (79.5 GW; NHAAP, 2013). In terms of energy, the total undeveloped NSD generation is estimated to be 460 TWh/year, around 169% of average 2002 2011 net annual generation from existing conventional hydropower plants (272 TWh/year; EIA, 2013). Given the run-of-river assumption, NSD stream-reaches have higher capacity factors (53 71%), especially compared with conventional larger-storage peaking-operation projects that usually have capacity factors of around 30%. The highest potential is identified in the Pacific Northwest

  4. Instability limits for spontaneous double layer formation

    SciTech Connect (OSTI)

    Carr, J. Jr.; Department of Physics, Texas Lutheran University, Seguin, Texas 78155 ; Galante, M. E.; McCarren, D.; Scime, E. E.; Sears, S.; VanDervort, R. W.; Magee, R. M.; TriAlpha Energy, Inc., Foothill Ranch, California 92610 ; Reynolds, E.

    2013-11-15

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

  5. EERE Success Story-Reaching New Limits with Solar Storage | Department of

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

    Energy Reaching New Limits with Solar Storage EERE Success Story-Reaching New Limits with Solar Storage February 25, 2016 - 10:49am Addthis Sunlight reflected from heliostats is shining directly on the particle receiver, which is currently being tested on top of the solar tower at the National Solar Thermal Test Facility. Sunlight reflected from heliostats is shining directly on the particle receiver, which is currently being tested on top of the solar tower at the National Solar Thermal

  6. Energy Dept. Reports: U.S. Wind Energy Production and Manufacturing Reaches

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

    Record Highs | Department of Energy Wind Energy Production and Manufacturing Reaches Record Highs Energy Dept. Reports: U.S. Wind Energy Production and Manufacturing Reaches Record Highs August 6, 2013 - 8:00am Addthis WASHINGTON - The Energy Department released two new reports today showcasing record growth across the U.S. wind market -- increasing America's share of clean, renewable energy and supporting tens of thousands of jobs nationwide. According to these reports, the United States

  7. Expanded "Green Button" Will Reach Federal Agencies and More American

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

    Energy Consumers | Department of Energy "Green Button" Will Reach Federal Agencies and More American Energy Consumers Expanded "Green Button" Will Reach Federal Agencies and More American Energy Consumers December 6, 2013 - 12:50pm Addthis Applications powered by open energy data were on display at the Energy Datapalooza in June 2012. Initiatives like Green Button will expand the ways consumers -- from homeowners and renters to federal government agencies -- can interact

  8. DOE and NASA Reach Cleanup Agreements with the State of California for the

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

    Santa Susana Field Laboratory | Department of Energy NASA Reach Cleanup Agreements with the State of California for the Santa Susana Field Laboratory DOE and NASA Reach Cleanup Agreements with the State of California for the Santa Susana Field Laboratory December 6, 2010 - 12:00am Addthis Washington, D.C. - The Department of Energy and NASA both signed Administrative Orders on Consent (AOC) with the California Environmental Protection Agency (Cal EPA) today that define the process for

  9. Space Chamber Reaches Cold Target at Unprecedented Efficiency | U.S. DOE

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

    Office of Science (SC) Space Chamber Reaches Cold Target at Unprecedented Efficiency Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Funding Opportunities Nuclear Science Advisory Committee (NSAC) Community 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: Email Us More Information » 10.01.12 Space Chamber Reaches

  10. Spotlight on Seattle, Washington: Community Partnerships Work to Extend Program Reach

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

    Revised July 2011 Version 2 Spotlight on Seattle, Washington: Community Partnerships Work to Extend Program Reach Getting Started 1 Seattle Moves the Needle With the Help of Its Partners Seattle's Community Power Works (CPW) program has engaged a vast network of partners to build on existing capacity and knowledge, extending the reach of its program in a short period of time. By evaluating potential partnerships and identifying strategic opportuni- ties to augment and enhance local ideas and

  11. Pressure, stress, and strain distribution in the double-stage diamond anvil cell

    SciTech Connect (OSTI)

    Lobanov, Sergey S.; Prakapenka, Vitali B.; Prescher, Clemens; Konôpková, Zuzana; Liermann, Hanns-Peter; Crispin, Katherine L.; Zhang, Chi; Goncharov, Alexander F.

    2015-07-21

    Double stage diamond anvil cells (DACs) of two designs have been assembled and tested. We used a standard symmetric DAC with flat or beveled culets as a primary stage and CVD microanvils machined by a focused ion beam as a second. We evaluated pressure, stress, and strain distributions in gold and a mixture of gold and iron as well as in secondary anvils using synchrotron x-ray diffraction with a micro-focused beam. A maximum pressure of 240 GPa was reached independent of the first stage anvil culet size. We found that the stress field generated by the second stage anvils is typical of conventional DAC experiments. The maximum pressures reached are limited by strains developing in the secondary anvil and by cupping of the first stage diamond anvil in the presented experimental designs. Also, our experiments show that pressures of several megabars may be reached without sacrificing the first stage diamond anvils.

  12. Double-disc gate valve

    DOE Patents [OSTI]

    Wheatley, Seth J.

    1979-01-01

    This invention relates to an improvement in a conventional double-disc gate valve having a vertically movable gate assembly including a wedge, spreaders slidably engaged therewtih, a valve disc carried by the spreaders. When the gate assembly is lowered to a selected point in the valve casing, the valve discs are moved transversely outward to close inlet and outlet ports in the casing. The valve includes hold-down means for guiding the disc-and-spreader assemblies as they are moved transversely outward and inward. If such valves are operated at relatively high differential pressures, they sometimes jam during opening. Such jamming has been a problem for many years in gate valves used in gaseous diffusion plants for the separtion of uranium isotopes. The invention is based on the finding that the above-mentioned jamming results when the outlet disc tilts about its horizontal axis in a certain way during opening of the valve. In accordance with the invention, tilting of the outlet disc is maintained at a tolerable value by providing the disc with a rigid downwardly extending member and by providing the casing with a stop for limiting inward arcuate movement of the member to a preselected value during opening of the valve.

  13. Physics constraints on double-pulse LIA engineering

    SciTech Connect (OSTI)

    Ekdahl, Carl August Jr.

    2015-05-20

    The options for advanced-radiography double-pulse linear induction accelerators (LIA) under consideration naturally fall into three categories that differ by the number of cells required. Since the two major physics issues, beam breakup (BBU) and corkscrew, are also dependent on the number of cells, it may be useful for the decision process to review the engineering consequences of beam physics constraints for each class. The LIAs can be categorized three different ways, and this report compares the different categories based upon the physics of their beams.

  14. Development of double-decker pulse radiolysis

    SciTech Connect (OSTI)

    Kan, K.; Kondoh, T.; Yang, J.; Ogata, A.; Norizawa, K.; Yoshida, Y.

    2012-07-15

    Double-decker pulse radiolysis (DDPR), which utilizes double-decker electron beams, was investigated to develop a new pulse radiolysis with a high time resolution. The double-decker electron beams were generated by injecting two UV pulses into a photocathode radio-frequency gun. In the pulse radiolysis, one electron beam was used as a pump beam, and the other was converted to a probe pulse. Finally, as its first application, the DDPR was successfully used for observing solvated electrons in water, with a 10%-90% rise time of 8.6 ps.

  15. Double-reed exhaust valve engine

    DOE Patents [OSTI]

    Bennett, Charles L.

    2015-06-30

    An engine based on a reciprocating piston engine that extracts work from pressurized working fluid. The engine includes a double reed outlet valve for controlling the flow of low-pressure working fluid out of the engine. The double reed provides a stronger force resisting closure of the outlet valve than the force tending to open the outlet valve. The double reed valve enables engine operation at relatively higher torque and lower efficiency at low speed, with lower torque, but higher efficiency at high speed.

  16. SciTech Connect: "neutrinoless double beta decay"

    Office of Scientific and Technical Information (OSTI)

    neutrinoless double beta decay" Find + Advanced Search Term Search Semantic Search Advanced Search All Fields: "neutrinoless double beta decay" Semantic Semantic Term Title:...

  17. Double Shock Experiments and Reactive Flow Modeling of High Pressure...

    Office of Scientific and Technical Information (OSTI)

    Double Shock Experiments and Reactive Flow Modeling of High Pressure LX-17 Detonation Reaction Product States Citation Details In-Document Search Title: Double Shock Experiments ...

  18. Water-lithium bromide double-effect absorption cooling analysis...

    Office of Scientific and Technical Information (OSTI)

    Water-lithium bromide double-effect absorption cooling analysis Citation Details In-Document Search Title: Water-lithium bromide double-effect absorption cooling analysis You ...

  19. Results of the double beta decay experiment NEMO-3

    SciTech Connect (OSTI)

    Tretyak, V. I. [Joint Institute for Nuclear Research, 6 Joliot Curie, Dubna (Russian Federation); Collaboration: NEMO-3 Collaboration

    2013-12-30

    The double beta decay experiment NEMO-3 has taken data from February 2003 to January 2011. The two-neutrino decay half lives were measured for seven different isotopes ({sup 100}Mo, {sup 82}Se, {sup 116}Cd, {sup 150}Nd, {sup 96}Zr, {sup 48}Ca and {sup 130}Te). No evidence for neutrinoless double beta decay is observed. The 0??? half-life limits are found to be T{sub 1/2}{sup 0?}({sup 100}Mo)>1.010{sup 24}yr(90%C.L.) and T{sub 1/2}{sup 0?}({sup 82}Se)>3.210{sup 23}yr(90%C.L.)

  20. A Microscopic Double-Slit Experiment

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

    Microscopic Double-Slit Experiment Print Two centuries ago, Thomas Young performed the classic demonstration of the wave nature of light. He placed a screen with two tiny slits in...

  1. A Microscopic Double-Slit Experiment

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

    A Microscopic Double-Slit Experiment Print Two centuries ago, Thomas Young performed the classic demonstration of the wave nature of light. He placed a screen with two tiny slits...

  2. Double bevel construction of a diamond anvil

    DOE Patents [OSTI]

    Moss, W.C.

    1987-02-06

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

  3. Double logarithmic asymptotic behavior in quantum chromodynamics

    SciTech Connect (OSTI)

    Kirschner, R.

    1981-08-01

    The double logarithmic contributions to the quark-(anti)quark scattering and annihilation amplitudes are summed to all orders in quantum chromodynamics. The results are a generalization of the calculations of Gorshkov et al. in the case of quantum electrodynamics.

  4. Fact #930: June 20, 2016 Subcompact Plug-in Vehicle Sales Reached 4% of

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

    Subcompact Sales in February 2015 | Department of Energy 0: June 20, 2016 Subcompact Plug-in Vehicle Sales Reached 4% of Subcompact Sales in February 2015 Fact #930: June 20, 2016 Subcompact Plug-in Vehicle Sales Reached 4% of Subcompact Sales in February 2015 SUBSCRIBE to the Fact of the Week Monthly plug-in vehicle (PEV) sales are small in comparison to total vehicle sales, but PEV sales shares are growing within some size classes. Looking at six-month moving totals, subcompact PEV sales

  5. As Auto X Reaches the Finish Line, a New Race Begins | Department of Energy

    Energy Savers [EERE]

    As Auto X Reaches the Finish Line, a New Race Begins As Auto X Reaches the Finish Line, a New Race Begins September 17, 2010 - 4:20pm Addthis John Schueler John Schueler Former New Media Specialist, Office of Public Affairs When the Automotive X Prize competition began back in March of 2008, the organizers laid out an ambitious goal: inspire a new generation of viable, safe and super fuel-efficient vehicles capable of achieving 100 miles per gallon or the energy equivalent (MPGe). The response

  6. U.S. and India Reach Historic Agreement on FutureGen Project | Department

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

    of Energy Reach Historic Agreement on FutureGen Project U.S. and India Reach Historic Agreement on FutureGen Project March 2, 2006 - 11:34am Addthis India becomes the first nation to accept U.S. invitation to participate in new clean coal project WASHINGTON, DC - President George W. Bush announced today that India will become the first country to participate on the government steering committee for the U.S. Department of Energy's FutureGen project - an initiative to build and operate the

  7. U.S., China Reach Agreement on Intellectual Property Protections for

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

    U.S.-China Clean Energy Research Center | Department of Energy Reach Agreement on Intellectual Property Protections for U.S.-China Clean Energy Research Center U.S., China Reach Agreement on Intellectual Property Protections for U.S.-China Clean Energy Research Center September 23, 2011 - 10:46am Addthis WASHINGTON, D.C. - U.S. Energy Secretary Steven Chu and Minister Wan Gang, of the Chinese Ministry of Science and Technology, today witnessed the signing by U.S. and Chinese government

  8. Low-Interest Rates Entice Philadelphians to Reach for the Stars |

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

    Department of Energy Low-Interest Rates Entice Philadelphians to Reach for the Stars Low-Interest Rates Entice Philadelphians to Reach for the Stars For many Philadelphia area residents, getting a loan for home energy efficiency improvements is a no brainer when it's offered at a 0.99% fixed interest rate. EnergyWorks in Philadelphia is using low-interest loan rates to incentivize homeowners by tying the interest rate to the number of energy efficiency measures incorporated into the home,

  9. Development of a high-resolution bathymetry dataset for the Columbia River through the Hanford Reach

    SciTech Connect (OSTI)

    Coleman, Andre M.; Ward, Duane L.; Larson, Kyle B.; Lettrick, Joseph W.

    2010-10-08

    A bathymetric and topographic data collection and processing effort involving existing and newly collected data has been performed for the Columbia River through the Hanford Reach in central Washington State, extending 60-miles from the tailrace of Priest Rapids Dam (river mile 397) to near the vicinity of the Interstate 182 bridge just upstream of the Yakima River confluence (river mile 337). The contents of this report provide a description of the data collections, data inputs, processing methodology, and final data quality assessment used to develop a comprehensive and continuous merged 1m resolution bathymetric and topographic surface dataset for the Columbia River through the Hanford Reach.

  10. Reaching Back Towards the Big Bang | U.S. DOE Office of Science (SC)

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

    Reaching Back Towards the Big Bang Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Funding Opportunities Nuclear Science Advisory Committee (NSAC) Community 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: Email Us More Information » 04.01.14 Reaching Back Towards the Big Bang US-led experiments at the LHC recreate the

  11. Strategies for In-Cylinder Reductions to Reach Bin 2 and LEV III |

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

    Department of Energy In-Cylinder Reductions to Reach Bin 2 and LEV III Strategies for In-Cylinder Reductions to Reach Bin 2 and LEV III Optimized EGR and boost pressure under transient conditions lowers in-cylinder NOx for diesels and reduces pumping losses and improves knock resistance for gasoline engines. p-03_czarnowski.pdf (311.74 KB) More Documents & Publications Can Future Emissions Limits be Met with a Hybrid EGR System Alone? Control Strategy for a Dual Loop EGR System to Meet

  12. EERE Success Story-Open-Source Testing Reaches New Milestone for Wave

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

    Energy | Department of Energy Open-Source Testing Reaches New Milestone for Wave Energy EERE Success Story-Open-Source Testing Reaches New Milestone for Wave Energy April 8, 2016 - 1:45pm Addthis WEC-Sim Phase 1 testing at the Oregon State University Hinsdale Directional Wave Basin. WEC-Sim Phase 1 testing at the Oregon State University Hinsdale Directional Wave Basin. Ocean wave energy is a developing next-generation technology. Wave energy converters are important for renewable energy

  13. Double shell tank waste analysis plan

    SciTech Connect (OSTI)

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

    1994-12-15

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

  14. Wavelength-doubling optical parametric oscillator

    DOE Patents [OSTI]

    Armstrong, Darrell J.; Smith, Arlee V.

    2007-07-24

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

  15. Innovative Telemetry System Will Help Tap Hard-to-Reach Natural Gas Resources

    Office of Energy Efficiency and Renewable Energy (EERE)

    The commercialization of an innovative telemetry communications system developed through a U.S. Department of Energy research program will help U.S. producers tap previously hard-to-reach natural gas resources deep underground, resulting in access to additional supplies that will help enhance national energy security.

  16. New Stream-reach Development (NSD) Final Report and Fact Sheet

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Water Power Program tasked Oak Ridge National Laboratory with evaluating the new stream-reach development (NSD) resource potential of more than 3 million U.S. streams in order to help individuals and organizations evaluate the feasibility of developing new hydropower sources in the United States.

  17. Fact #930: June 20, 2016 Subcompact Plug-in Vehicle Sales Reached 4% of Subcompact Sales in February 2015- Dataset

    Broader source: Energy.gov [DOE]

    Excel file and dataset for Subcompact Plug-in Vehicle Sales Reached 4% of Subcompact Sales in February 2015

  18. Fact #864: March 16, 2015 Imports of Primary Energy have Declined Sharply Since the Peak Reached in 2007

    Broader source: Energy.gov [DOE]

    Excel file and dataset for Imports of Primary Energy have Declined Sharply Since the Peak Reached in 2007

  19. Exact nonlinear excitations in double-degenerate plasmas

    SciTech Connect (OSTI)

    Akbari-Moghanjoughi, M.

    2012-06-15

    In this work, we use the conventional hydrodynamics formalism and incorporate the Chew-Goldberger-Low double-adiabatic theory to evaluate the nonlinear electrostatic ion excitations in double-degenerate (electron spin-orbit degenerate) magnetized quantum plasmas. Based on the Sagdeev pseudopotential method, an exact general pseudopotential is calculated which leads to the allowed Mach-number range criteria for such localized density structures in an anisotropic magnetized plasma. We employ the criteria on the Mach-number range for diverse magnetized quantum plasma with different equations of state. It is remarked that various plasma fractional parameters such as the system dimensionality, ion-temperature, relativistic-degeneracy, Zeeman-energy, and plasma composition are involved in the stability of an obliquely propagating nonlinear ion-acoustic wave in a double-degenerate quantum plasma. Current study is most appropriate for nonlinear wave analysis in dense astrophysical magnetized plasma environments such as white-dwarfs and neutron-star crusts where the strong magnetic fields can be present.

  20. Evaluation of Juvenile Fall Chinook Stranding on the Hanford Reach, 1997-1999 Interim Report.

    SciTech Connect (OSTI)

    Wagner, Paul; Nugent, John; Price, William

    1999-02-15

    Pilot work conducted in 1997 to aid the development of the study for the 1998 Evaluation of Juvenile Fall Chinook Stranding on The Hanford Reach. The objectives of the 1997 work were to: (1) identify juvenile chinook production and rearing areas..., (2) identify sampling sites and develop the statistical parameters necessary to complete the study, (3) develop a study plan..., (4) conduct field sampling activities...

  1. NNSA Reaches B61-12 Life Extension Program Milestone: First Full-System

    National Nuclear Security Administration (NNSA)

    Mechanical Environment Test Completed Successfully | National Nuclear Security Administration | (NNSA) NNSA Reaches B61-12 Life Extension Program Milestone: First Full-System Mechanical Environment Test Completed Successfully February 04, 2014 WASHINGTON, D.C. - The National Nuclear Security Administration (NNSA) today announced that Los Alamos and Sandia national laboratories successfully completed the first full-system mechanical environment test of the B61-12 as part of the NNSA's ongoing

  2. NNSA Reaches Important Milestone with B61-12 Life Extension Program |

    National Nuclear Security Administration (NNSA)

    National Nuclear Security Administration | (NNSA) Reaches Important Milestone with B61-12 Life Extension Program August 01, 2016 WASHINGTON - The Department of Energy's National Nuclear Security Administration (DOE/NNSA) announced that they recently formally authorized the production engineering phase of its B61-12 warhead life extension program (LEP). This important milestone comes after four years of work in the development-engineering phase of the program, and marks the final development

  3. Trends in radionuclide concentrations in Hanford Reach fish, 1982 through 1992

    SciTech Connect (OSTI)

    Poston, T.M.

    1994-06-01

    Environmental monitoring has been conducted at the US Department of Energy`s Hanford Site in southeast Washington State since 1945. Fish from the Hanford Reach of the Columbia River, which borders the Site, are monitored annually. The two objectives of this report were (1) to evaluate trends in the concentrations of radionuclides [e.g., {sup 90}Sr and {sup 137}Cs] in two species of Columbia River fish [smallmouth bass and mountain whitefish] sampled from the Hanford Reach from 1982 through 1992; and (2) to determine the impact of Hanford Site releases on these two species and carp and fall chinook salmon collected during this time frame. The evaluation found gradual reductions of {sup 137}Cs in bass muscle and {sup 90}Sr in bass and whitefish carcass from 1982 through 1992. Concentrations of {sup 90}Sr in bass and whitefish followed the pattern established by reported Hanford Site releases from 1982 through 1992 and was supported by significant regression analyses comparing annual releases to sample concentration. Because data for carp have been collected only since 1990, the data base was inadequate for determining trends. Moreover, fall chinook salmon were only sampled once in this 11-year period. Concentrations of {sup 90}Sr and {sup 137}Cs in fish samples collected from distant background locations exceeded concentrations in Hanford Reach fish. Estimates of the dose from consumption of Hanford Reach fish were less than 0.001 times the National Council on Radiation Protection and Measurements and the US Department of Energy guideline of 100 mrem/yr.

  4. Milestone Reached: New Process Reduces Cost and Risk of Biofuel Production from Bio-Oil Upgrading

    Office of Energy Efficiency and Renewable Energy (EERE)

    Battelle—a nonprofit research and development organization that operates many of the national laboratories—reached an Energy Department project milestone to demonstrate at least 1,000 hours of bio-oil hydrotreatment on a single catalyst charge. Typically, it takes many catalysts to convert a bio-oil intermediate into biofuel, making the conversion process expensive. Battelle’s new process substantially reduces the cost and risk of biofuel production and helps make the process more commercially viable.

  5. DOE CHALLENGE HOME and PHIUS PARTNER TO MAKE IT EASIER TO REACH

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

    CHALLENGE HOME and PHIUS PARTNER TO MAKE IT EASIER TO REACH NEW LEVELS OF ZERO NET-ENERGY READY This partnership between DOE and PHIUS enhances coordination between voluntary peak performance new home label programs to expedite market transformation to net-zero ready homes that are so energy efficient that small renewable energy systems can offset most or all annual energy consumption. Net-zero ready homes can help address climate change, economic, and energy security issues. By working

  6. JASPER Reaches Shot 125 Milestone; Future Looks Bright for More Growth

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

    JASPER Reaches Shot 125 Milestone; Future Looks Bright for More Growth The Joint Actinide Shock Physics Research (JASPER) facility at the Nevada National Security Site (NNSS) features more than just one of the most powerful gas guns on the planet - it has quickly become an integral part of the Stockpile Stewardship program for the data it provides. Scientists from the National Laboratories use JASPER to conduct experiments, or "shots," that subject materials to extreme pressures and

  7. DOE Reaches $1.5M Settlement with Room Air Conditioner Manufacturer |

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

    Department of Energy $1.5M Settlement with Room Air Conditioner Manufacturer DOE Reaches $1.5M Settlement with Room Air Conditioner Manufacturer October 27, 2015 - 5:48pm Addthis The General Counsel's enforcement office settled an enforcement action against Friedrich Air Conditioning Company for $1,494,626.25, for the distribution of room air conditioners that failed to meet federal minimum standards for energy efficiency. Room air conditioners must meet minimum efficiency standards to be

  8. BLOCKING OSCILLATOR DOUBLE PULSE GENERATOR CIRCUIT

    DOE Patents [OSTI]

    Haase, J.A.

    1961-01-24

    A double-pulse generator, particuiarly a double-pulse generator comprising a blocking oscillator utilizing a feedback circuit to provide means for producing a second pulse within the recovery time of the blocking oscillator, is described. The invention utilized a passive network which permits adjustment of the spacing between the original pulses derived from the blocking oscillator and further utilizes the original pulses to trigger a circuit from which other pulses are initiated. These other pulses are delayed and then applied to the input of the blocking oscillator, with the result that the output from the oscillator circuit contains twice the number of pulses originally initiated by the blocking oscillator itself.

  9. A Microscopic Double-Slit Experiment

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

    A Microscopic Double-Slit Experiment A Microscopic Double-Slit Experiment Print Wednesday, 29 February 2012 00:00 Two centuries ago, Thomas Young performed the classic demonstration of the wave nature of light. He placed a screen with two tiny slits in front of a single light source, effectively converting it into a two-centered source. On a second screen far away, he saw a pattern of light and dark diffraction fringes, a well-known hallmark of wave interference. Along with later studies using

  10. Searches for Neutrino-less Double

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

    Searches for Neutrino-less Double Beta-Decay: a Decade of Discovery Ahead at the ton-scale? David Nygren University of Texas at Arlington September 2, 2015 4:00 p.m. Double beta-decay with the emission of neutrinos is an allowed second-order process and has been observed in several candidate nuclei such as 76Ge, 82Se, and 136Xe. A neutrino-less decay mode is theoretically possible as well, with profound implications such as non-conservation of lepton number. The neutrino-less decay can only

  11. The double-beta decay: Theoretical challenges

    SciTech Connect (OSTI)

    Horoi, Mihai

    2012-11-20

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

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

    SciTech Connect (OSTI)

    Suhonen, Jouni

    2013-12-30

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

  13. Structure and charging kinetics of electrical double layers at large electrode voltage

    SciTech Connect (OSTI)

    Cagle, Clint [Clemson University; Feng, Guang [Clemson University; Qiao, Rui [Clemson University; Huang, Jingsong [ORNL; Sumpter, Bobby G [ORNL; Meunier, Vincent [ORNL

    2009-01-01

    The structure and charging kinetics of electrical double layers (EDLs) at interfaces of NaCl solutions and planar electrodes are studied by molecular dynamics (MD) and Poisson Nernst Planck (PNP) simulations. Based on the MD results and prior experimental data, we show that counterion packing in planar EDLs does not reach the steric limit at electrode voltages below 1 V. In addition, we demonstrate that a PNP model, when complemented with a Stern model, can be effectively used to capture the overall charging kinetics. However, the PNP/Stern model can only give a qualitative description of the fine features of the EDL.

  14. Redd Site Selection and Spawning Habitat Use by Fall Chinook Salmon, Hanford Reach, Columbia River : Final Report 1995 - 1998.

    SciTech Connect (OSTI)

    Geist, David R.

    1999-05-01

    This report summarizes results of research activities conducted from 1995 through 1998 on identifying the spawning habitat requirements of fall chinook salmon (Oncorhynchus tshawytscha) in the Hanford Reach of the Columbia River. The project investigated whether traditional spawning habitat models could be improved in order to make better predictions of available habitat for fall chinook salmon in the Snake River. Results suggest models could be improved if they used spawning area-specific, rather than river-specific, spawning characteristics; incorporated hyporheic discharge measurements; and gave further consideration to the geomorphic features that are present in the unconstrained segments of large alluvial rivers. Ultimately the recovery of endangered fall chinook salmon will depend on how well we are able to recreate the characteristics once common in alluvial floodplains of large rivers. The results from this research can be used to better define the relationship between these physical habitat characteristics and fall chinook salmon spawning site selection, and provide more efficient use of limited recovery resources. This report is divided into four chapters which were presented in the author's doctoral dissertation which he completed through the Department of Fisheries and Wildlife at Oregon State University. Each of the chapters has been published in peer reviewed journals or is currently under review. Chapter one is a conceptual spawning habitat model that describes how geomorphic features of river channels create hydraulic processes, including hyporheic flows, that influence where salmon spawn in unconstrained reaches of large mainstem alluvial rivers. Chapter two describes the comparison of the physical factors associated with fall chinook salmon redd clusters located at two sites within the Reach. Spatial point pattern analysis of redds showed that redd clusters averaged approximately 10 hectares in area and their locations were consistent from year to

  15. Double layer capacitor prospects look good

    SciTech Connect (OSTI)

    1995-07-01

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

  16. Status of Net Metering: Assessing the Potential to Reach Program Caps

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

    Status of Net Metering: Assessing the Potential to Reach Program Caps J. Heeter, R. Gelman, and L. Bird National Renewable Energy Laboratory Technical Report NREL/TP-6A20-61858 September 2014 NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency & Renewable Energy Operated by the Alliance for Sustainable Energy, LLC This report is available at no cost from the National Renewable Energy Laboratory (NREL) at www.nrel.gov/publications. Contract No.

  17. Oil inventories in industrialized countries to reach record high at end of 2015

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

    Oil inventories in industrialized countries to reach record high at end of 2015 The amount of year-end oil inventories held in industrialized countries is expected to be the highest on record in 2015. In its monthly forecast, the U.S. Energy Information Administration said it expects commercial oil inventories in the United States and other industrialized countries to total 2.83 billion barrels at the end of this year almost 90 million barrels more than at the end of 2014. Global oil production

  18. HANFORD DOUBLE SHELL TANK (DST) THERMAL & SEISMIC PROJECT SEISMIC ANALYSIS OF HANFORD DOUBLE SHELL TANKS

    SciTech Connect (OSTI)

    MACKEY, T.C.

    2006-03-17

    M&D Professional Services, Inc. (M&D) is under subcontract to Pacific Northwest National Laboratory (PNNL) to perform seismic analysis of the Hanford Site double-shell tanks (DSTs) in support of a project entitled ''Double-Shell Tank (DSV Integrity Project--DST Thermal and Seismic Analyses)''. The overall scope of the project is to complete an up-to-date comprehensive analysis of record of the DST system at Hanford in support of Tri-Party Agreement Milestone M-48-14, The work described herein was performed in support of the seismic analysis of the DSTs. The thermal and operating loads analysis of the DSTs is documented in Rinker et al. (2004). The work statement provided to M&D (PNNL 2003) required that the seismic analysis of the DSTs assess the impacts of potentially non-conservative assumptions in previous analyses and account for the additional soil mass due to the as-found soil density increase, the effects of material degradation, additional thermal profiles applied to the full structure including the soil-structure response with the footings, the non-rigid (low frequency) response of the tank roof, the asymmetric seismic-induced soil loading, the structural discontinuity between the concrete tank wall and the support footing and the sloshing of the tank waste. The seismic analysis considers the interaction of the tank with the surrounding soil and the effects of the primary tank contents. The DSTs and the surrounding soil are modeled as a system of finite elements. The depth and width of the soil incorporated into the analysis model are sufficient to obtain appropriately accurate analytical results. The analyses required to support the work statement differ from previous analysis of the DSTs in that the soil-structure interaction (SSI) model includes several (nonlinear) contact surfaces in the tank structure, and the contained waste must be modeled explicitly in order to capture the fluid-structure interaction behavior between the primary tank and contained

  19. Double, Double Toil and Trouble: Tungsten Burns and Helium Bubbles | U.S.

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

    DOE Office of Science (SC) Double, Double Toil and Trouble: Tungsten Burns and Helium Bubbles Advanced Scientific Computing Research (ASCR) ASCR Home About Research Facilities Science Highlights Benefits of ASCR Funding Opportunities Advanced Scientific Computing Advisory Committee (ASCAC) Community Resources Contact Information Advanced Scientific Computing Research U.S. Department of Energy SC-21/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-7486 F: (301)

  20. An ecological engineering approach for keeping water from reaching interred wastes in arid or semiarid regions

    SciTech Connect (OSTI)

    Anderson, J.E.

    1997-12-31

    This paper describes application of a soil-plant cover system (SPCS) to preclude water from reaching interred wastes in arid and semiarid regions. Where potential evapotranspiration far exceeds precipitation, water can be kept from reaching buried wastes by (1) providing a sufficiently deep cap of soil to store precipitation that falls while plants are dormant and (2) maintaining plant cover to deplete soil moisture during the growing season, thereby emptying the storage reservoir. Research at the Idaho National Engineering Laboratory (INEL) has shown that 2 m of soil is adequate to store moisture from snowmelt and spring rains. Healthy stands of perennial grasses and shrubs adapted to the INEL climate use all available soil moisture, even during a very wet growing season. However, burrowing by small mammals or ants may affect the performance of a SPCS by increasing infiltration of water. Intrusion barriers of gravel and cobble can be used to restrict burrowing, but emplacement of such barriers affects soil moisture storage and plant rooting depths. A replicated field experiment to investigate the implications of those effects is in progress. Incorporation of an SPCS should be considered in the design of isolation barriers for shallow land burial of hazardous wastes in and regions.

  1. HANFORD DOUBLE SHELL TANK THERMAL AND SEISMIC PROJECT SENSITIVITY...

    Office of Scientific and Technical Information (OSTI)

    Title: HANFORD DOUBLE SHELL TANK THERMAL AND SEISMIC PROJECT SENSITIVITY OF DOUBLE SHELL ... the definition of the design ground motion or in the properties of the tank-waste system. ...

  2. WATER-LITHIUM BROMIDE DOUBLE-EFFECT ABSORPTION COOLING ANALYSIS

    Office of Scientific and Technical Information (OSTI)

    WATER-LITHIUM BROMIDE DOUBLE-EFFECT ABSORPTION COOLING ANALYSIS Gary C . V l i e t , ... i e n t simulation of the double-effect, water-1 ithium bromide absorption cooling ...

  3. Double photoionization of helium with synchrotron x-rays: Proceedings

    SciTech Connect (OSTI)

    Not Available

    1994-01-01

    This report contains papers on the following topics: Overview and comparison of photoionization with charged particle impact; The ratio of double to single ionization of helium: the relationship of photon and bare charged particle impact ionization; Double photoionization of helium at high energies; Compton scattering of photons from electrons bound in light elements; Electron ionization and the Compton effect in double ionization of helium; Elimination of two atomic electrons by a single energy photon; Double photoionization of helium at intermediate energies; Double Photoionization: Gauge Dependence, Coulomb Explosion; Single and Double Ionization by high energy photon impact; The effect of Compton Scattering on the double to single ionization ratio in helium; and Double ionization of He by photoionization and Compton scattering. These papers have been cataloged separately for the database.

  4. Sensitivity of CUORE to Neutrinoless Double-Beta Decay (Journal...

    Office of Scientific and Technical Information (OSTI)

    Sensitivity of CUORE to Neutrinoless Double-Beta Decay Citation Details In-Document Search Title: Sensitivity of CUORE to Neutrinoless Double-Beta Decay In this paper, we study the...

  5. Sensitivity of CUORE to Neutrinoless Double-Beta Decay (Journal...

    Office of Scientific and Technical Information (OSTI)

    Sensitivity of CUORE to Neutrinoless Double-Beta Decay Citation Details In-Document Search Title: Sensitivity of CUORE to Neutrinoless Double-Beta Decay You are accessing a...

  6. HANFORD DOUBLE SHELL TANK THERMAL AND SEISMIC PROJECT SEISMIC...

    Office of Scientific and Technical Information (OSTI)

    Title: HANFORD DOUBLE SHELL TANK THERMAL AND SEISMIC PROJECT SEISMIC ANALYSIS OF HANFORD DOUBLE SHELL TANKS M&D Professional Services, Inc. (M&D) is under subcontract to Pacific ...

  7. Hanford Begins New Campaign to Remove Excess Water from Double...

    Office of Environmental Management (EM)

    Begins New Campaign to Remove Excess Water from Double-Shell Tanks Hanford Begins New Campaign to Remove Excess Water from Double-Shell Tanks September 30, 2014 - 12:00pm Addthis ...

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

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

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

  9. Competing Pathways for Nucleation of the Double Perovskite Structure...

    Office of Scientific and Technical Information (OSTI)

    Double Perovskite Structure in the Epitaxial Synthesis of La 2 MnNiO 6 Citation Details In-Document Search Title: Competing Pathways for Nucleation of the Double Perovskite ...

  10. Monitoring of Double Stud Wall Moisture Conditions in the Northeast

    SciTech Connect (OSTI)

    Ueno, K.

    2015-03-01

    Double-stud walls insulated with cellulose or low-density spray foam can have R-values of 40 or higher. However, double stud walls have a higher risk of interior-sourced condensation moisture damage, when compared with high-R approaches using exterior insulating sheathing.; Moisture conditions in double stud walls were monitored in Zone 5A (Massachusetts); three double stud assemblies were compared.

  11. Machine learning bandgaps of double perovskites

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Pilania, G.; Mannodi-Kanakkithodi, A.; Uberuaga, B. P.; Ramprasad, R.; Gubernatis, J. E.; Lookman, T.

    2016-01-19

    The ability to make rapid and accurate predictions on bandgaps of double perovskites is of much practical interest for a range of applications. While quantum mechanical computations for high-fidelity bandgaps are enormously computation-time intensive and thus impractical in high throughput studies, informatics-based statistical learning approaches can be a promising alternative. Here we demonstrate a systematic feature-engineering approach and a robust learning framework for efficient and accurate predictions of electronic bandgaps of double perovskites. After evaluating a set of more than 1.2 million features, we identify lowest occupied Kohn-Sham levels and elemental electronegativities of the constituent atomic species as the mostmore » crucial and relevant predictors. As a result, the developed models are validated and tested using the best practices of data science and further analyzed to rationalize their prediction performance.« less

  12. Double-clad nuclear fuel safety rod

    DOE Patents [OSTI]

    McCarthy, William H.; Atcheson, Donald B.; Vaidyanathan, Swaminathan

    1984-01-01

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

  13. Double Coil Condenser Apparatus - Energy Innovation Portal

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

    Energy Dosimetry Records System PIA, bechtel Jacobs Company, LLC Dosimetry Records System PIA, bechtel Jacobs Company, LLC Dosimetry Records System PIA, bechtel Jacobs Company, LLC Dosimetry Records System PIA, bechtel Jacobs Company, LLC (196.75 KB) More Documents & Publications Electronic Document Management System PIA, BechtelJacobs Company, LLC Pension Estimate System PIA, Bechtel Jacobs Company, LLC Medgate, PIA, Bechtel Jacobs Company, LLC

    Double Coil Condenser Apparatus A glass

  14. double-action | netl.doe.gov

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

    Reversible Ionic Liquids as Double-Action Solvents for Efficient CO2 Capture Project No.: DE-NT0005287 In this project, the Georgia Tech Research Corporation is using totally novel chemistryto engender the dramatic changes needed for widespread implementation of CO2 capture in a both environmentally benign and economical process. Current methods of CO2 post-combustion recovery from coal-fired power plants focus on such techniques as absorption in aqueous ethanolamine scrubbers - and this is now

  15. Use of coiled tubing during the Wytch Farm extended-reach drilling project

    SciTech Connect (OSTI)

    Summers, T.; Larsen, H.A.; Redway, M.; Hill, G.

    1995-05-01

    The largest onshore oil field in western Europe is in an environmentally sensitive coastal area in southern England. Initial development of the field in the late 1970`s focused on accessing reserves underlying the onshore section of the reservoir. In 1989, various development options were screened to access the offshore section of the reservoir, containing {approx} 80 million bbl of recoverable oil. In 1991, the decision was made to access these reserves through extended-reach drilling (ERD) from an existing onshore wellsite. This development is currently under way, with 3 of 11 planned wells already drilled and producing. This paper describes the application of coiled tubing (CT) in the logging and completion phases of the ERD wells drilled to date. Conclusions are made as to the value of coiled tubing in ERD wells to minimize rig time and the current limits of technology.

  16. The use of coiled tubing during the Wytch Farm extended reach drilling project

    SciTech Connect (OSTI)

    Summers, T.; Larsen, H.A.; Redway, M.; Hill, G.

    1994-12-31

    The largest onshore oilfield in Western Europe is situated in an environmentally sensitive coastal area on the south coast of England. Initial development of the field in the late 1970`s focused on accessing reserves underlying the onshore section of the reservoir. In 1989, various development options were screened to access the offshore section of the reservoir, containing some 80 million barrels of recoverable oil. In 1991, the decision was made to access these reserves through extended reach drilling (ERD) from an existing onshore well-site. This development is currently underway, with three out of a planned eleven wells already drilled and producing. This paper will describe the application of Coiled Tubing in the logging and completion phases of the ERD wells drilled to date.

  17. Doubling Geothermal Generation Capacity by 2020: A Strategic Analysis |

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

    Department of Energy Doubling Geothermal Generation Capacity by 2020: A Strategic Analysis Doubling Geothermal Generation Capacity by 2020: A Strategic Analysis NREL Doubling Geothermal Capacity.pdf (890.69 KB) More Documents & Publications Geothermal Exploration Policy Mechanisms Offshore Wind Jobs and Economic Development Impacts in the United States: Four Regional Scenarios track 1: systems analysis | geothermal 2015 peer review

  18. Study of a double bubbler for material balance in liquids

    SciTech Connect (OSTI)

    Hugues Lambert

    2013-09-01

    The objective of this project was to determine the potential of a double bubbler to measure density and fluid level of the molten salt contained in an electrorefiner. Such in-situ real-time measurements can provide key information for material balances in the pyroprocessing of the nuclear spent fuel. This theoretical study showed this technique has a lot of promise. Four different experiments were designed and performed. The first three experiments studied the influence of a variety of factors such as depth difference between the two tubes, gas flow rate, the radius of the tubes and determining the best operating conditions. The last experiment purpose was to determine the precision and accuracy of the apparatus during specific conditions. The elected operating conditions for the characterization of the system were a difference of depth of 25 cm and a flow rate of 55 ml/min in each tube. The measured densities were between 1,000 g/l and 1,400g/l and the level between 34cm and 40 cm. The depth difference between the tubes is critical, the larger, the better. The experiments showed that the flow rate should be the same in each tube. The concordances with theoretical predictions were very good. The density precision was very satisfying (spread<0.1%) and the accuracy was about 1%. For the level determination, the precision was also very satisfying (spread<0.1%), but the accuracy was about 3%. However, those two biases could be corrected with calibration curves. In addition to the aqueous systems studied in the present work, future work will focus on examining the behavior of the double bubbler instrumentation in molten salt systems. The two main challenges which were identified in this work are the effect of the temperature and the variation of the superficial tension.

  19. Properties of Fluid Deuterium Under Double-Shock Compression to Several Mbar

    SciTech Connect (OSTI)

    Boehly, T.R.; Hicks, D.G.; Celliers, P.M.; Collins, T.J.B.; Earley, R.; Eggert, J.H.; Jacobs-Perkins, D.; Moon, S.J.; Vianello, E.; Meyerhofer, D.D.; Collins, G.W.

    2004-08-24

    The compressibility of fluid deuterium up to several Mbar has been probed using laser-driven shock waves reflected from a quartz anvil. Combining high-precision (~1%) shock velocity measurements with the double-shock technique, where differences in equation of state (EOS) models are magnified, has allowed better discrimination between theoretical predictions in the second-shock regime.

  20. The MESA polarimetry chain and the status of its double scattering polarimeter

    SciTech Connect (OSTI)

    Aulenbacher, K.; Bartolom, P. Aguar; Molitor, M.; Tioukine, V.

    2013-11-07

    We plan to have two independent polarimetry systems at MESA based on totally different physical processes. A first one tries to minimize the systematic uncertainties in double polarized Mo/ller scattering, which is to be achieved by stored hydrogen atoms in an atomic trap (Hydro-Mo/ller-Polarimeter). The other one relies on the equality of polarizing and analyzing power which allows to measure the effective analyzing power of a polarimeter with very high accuracy. Since the status of Hydro-Mo/ller is presented in a separate paper we concentrate on the double scattering polarimeter in this article.

  1. Reaching Grid Parity Using BP Solar Crystalline Silicon Technology: A Systems Class Application

    SciTech Connect (OSTI)

    Cunningham, Daniel W; Wohlgemuth, John; Carlson, David E; Clark, Roger F; Gleaton, Mark; Posbic, John P; Zahler, James

    2010-12-06

    The primary target market for this program was the residential and commercial PV markets, drawing on BP Solar's premium product and service offerings, brand and marketing strength, and unique routes to market. These two markets were chosen because: (1) in 2005 they represented more than 50% of the overall US PV market; (2) they are the two markets that will likely meet grid parity first; and (3) they are the two market segments in which product development can lead to the added value necessary to generate market growth before reaching grid parity. Federal investment in this program resulted in substantial progress toward the DOE TPP target, providing significant advancements in the following areas: (1) Lower component costs particularly the modules and inverters. (2) Increased availability and lower cost of silicon feedstock. (3) Product specifically developed for residential and commercial applications. (4) Reducing the cost of installation through optimization of the products. (5) Increased value of electricity in mid-term to drive volume increases, via the green grid technology. (6) Large scale manufacture of PV products in the US, generating increased US employment in manufacturing and installation. To achieve these goals BP Solar assembled a team that included suppliers of critical materials, automated equipment developers/manufacturers, inverter and other BOS manufacturers, a utility company, and University research groups. The program addressed all aspects of the crystalline silicon PV business from raw materials (particularly silicon feedstock) through installation of the system on the customers site. By involving the material and equipment vendors, we ensured that supplies of silicon feedstock and other PV specific materials like encapsulation materials (EVA and cover glass) will be available in the quantities required to meet the DOE goals of 5 to 10 GW of installed US PV by 2015 and at the prices necessary for PV systems to reach grid parity in 2015

  2. Double and single pion photoproduction within a dynamical coupled-channels model

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Hiroyuki Kamano; Julia-Diaz, Bruno; Lee, T. -S. H.; Matsuyama, Akihiko; Sato, Toru

    2009-12-16

    Within a dynamical coupled-channels model which has already been fixed from analyzing the data of the πN → πN and γN → πN reactions, we present the predicted double pion photoproduction cross sections up to the second resonance region, W < 1.7 GeV. The roles played by the different mechanisms within our model in determining both the single and double pion photoproduction reactions are analyzed, focusing on the effects due to the direct γN → ππN mechanism, the interplay between the resonant and non-resonant amplitudes, and the coupled-channels effects. As a result, the model parameters which can be determined mostmore » effectively in the combined studies of both the single and double pion photoproduction data are identified for future studies.« less

  3. Using the Conceptual Site Model to Remediate Two Sites in New England and Reach License Termination and Site Reuse

    SciTech Connect (OSTI)

    Glucksberg, Nadia; Peters, Jay

    2008-01-15

    presents the similarities and differences between the CSMs for these two sites and how each site used the CSM to reach closure. Although each of these site have unique histories and physical features, the CSM approach was used to understand the geology, hydrogeology, migration and exposure pathways, and regulatory requirements to successfully characterize and plan closure of the sites. A summary of how these attributes affected site closure is provided.

  4. EVIDENCE FOR A MILKY WAY TIDAL STREAM REACHING BEYOND 100 kpc

    SciTech Connect (OSTI)

    Drake, A. J.; Djorgovski, S. G.; Graham, M. J.; Mahabal, A.; Donalek, C.; Williams, R.; Catelan, M.; Torrealba, G.; Prieto, J. L.; Larson, S.; Christensen, E.; Beshore, E.

    2013-03-10

    We present the analysis of 1207 RR Lyrae found in photometry taken by the Catalina Survey's Mount Lemmon telescope. By combining accurate distances for these stars with measurements for {approx}14,000 type-ab RR Lyrae from the Catalina Schmidt telescope, we reveal an extended association that reaches Galactocentric distances beyond 100 kpc and overlaps the Sagittarius stream system. This result confirms earlier evidence for the existence of an outer halo tidal stream resulting from a disrupted stellar system. By comparing the RR Lyrae source density with that expected based on halo models, we find the detection has {approx}8{sigma} significance. We investigate the distances, radial velocities, metallicities, and period-amplitude distribution of the RR Lyrae. We find that both radial velocities and distances are inconsistent with current models of the Sagittarius stream. We also find tentative evidence for a division in source metallicities for the most distant sources. Following prior analyses, we compare the locations and distances of the RR Lyrae with photometrically selected candidate horizontal branch stars and find supporting evidence that this structure spans at least 60 Degree-Sign of the sky. We investigate the prospects of an association between the stream and the unusual globular cluster NGC 2419.

  5. The double contact nature of TT Herculis

    SciTech Connect (OSTI)

    Terrell, Dirk; Nelson, Robert H. E-mail: bob.nelson@shaw.ca

    2014-03-01

    We present new radial velocities and photometry of the short-period Algol TT Herculis. Previous attempts to model the light curves of the system have met with limited success, primarily because of the lack of a reliable mass ratio. Our spectroscopic observations are the first to result in radial velocities for the secondary star, and thus provide a spectroscopic mass ratio. Simultaneous analysis of the radial velocities and new photometry shows that the system is a double contact binary, with a rapidly rotating primary that fills its limiting lobe.

  6. A Microscopic Double-Slit Experiment

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

    A Microscopic Double-Slit Experiment Print Two centuries ago, Thomas Young performed the classic demonstration of the wave nature of light. He placed a screen with two tiny slits in front of a single light source, effectively converting it into a two-centered source. On a second screen far away, he saw a pattern of light and dark diffraction fringes, a well-known hallmark of wave interference. Along with later studies using particles instead of light, the experiment played a crucial role in

  7. A Microscopic Double-Slit Experiment

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

    Microscopic Double-Slit Experiment Print Two centuries ago, Thomas Young performed the classic demonstration of the wave nature of light. He placed a screen with two tiny slits in front of a single light source, effectively converting it into a two-centered source. On a second screen far away, he saw a pattern of light and dark diffraction fringes, a well-known hallmark of wave interference. Along with later studies using particles instead of light, the experiment played a crucial role in

  8. A Microscopic Double-Slit Experiment

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

    A Microscopic Double-Slit Experiment Print Two centuries ago, Thomas Young performed the classic demonstration of the wave nature of light. He placed a screen with two tiny slits in front of a single light source, effectively converting it into a two-centered source. On a second screen far away, he saw a pattern of light and dark diffraction fringes, a well-known hallmark of wave interference. Along with later studies using particles instead of light, the experiment played a crucial role in

  9. Optical double-slit particle measuring system

    DOE Patents [OSTI]

    Tichenor, D.A.; Wang, J.C.F.; Hencken, K.R.

    1982-03-25

    A method for in situ measurement of particle size is described. The size information is obtained by scanning an image of the particle across a double-slit mask and observing the transmitted light. This method is useful when the particle size of primary interest is 3..mu..m and larger. The technique is well suited to applications in which the particles are non-spherical and have unknown refractive index. It is particularly well suited to high temperature environments in which the particle incandescence provides the light source.

  10. Optical double-slit particle measuring system

    DOE Patents [OSTI]

    Hencken, Kenneth R.; Tichenor, Daniel A.; Wang, James C. F.

    1984-01-01

    A method for in situ measurement of particle size is described. The size information is obtained by scanning an image of the particle across a double-slit mask and observing the transmitted light. This method is useful when the particle size of primary interest is 3 .mu.m and larger. The technique is well suited to applications in which the particles are non-spherical and have unknown refractive index. It is particularly well suited to high temperature environments in which the particle incandescence provides the light source.

  11. Neutrinoless double beta decay and neutrino masses

    SciTech Connect (OSTI)

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

    2012-07-27

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

  12. Double acting stirling engine phase control

    DOE Patents [OSTI]

    Berchowitz, David M.

    1983-01-01

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

  13. Three-Triplet Model with Double SU(3) Symmetry

    DOE R&D Accomplishments [OSTI]

    Han, M. Y.; Nambu, Y.

    1965-01-01

    With a view to avoiding some of the kinematical and dynamical difficulties involved in the single triplet quark model, a model for the low lying baryons and mesons based on three triplets with integral charges is proposed, somewhat similar to the two-triplet model introduced earlier by one of us (Y. N.). It is shown that in a U(3) scheme of triplets with integral charges, one is naturally led to three triplets located symmetrically about the origin of I{sub 3} - Y diagram under the constraint that Nishijima-Gell-Mann relation remains intact. A double SU(3) symmetry scheme is proposed in which the large mass splittings between different representations are ascribed to one of the SU(3), while the other SU(3) is the usual one for the mass splittings within a representation of the first SU(3).

  14. DOE Moab Project Reaches Halfway Mark in Mill Tailings Removal 2.5 Million Hours Safely Worked

    Office of Energy Efficiency and Renewable Energy (EERE)

    (Grand Junction, CO) ― The U.S. Department of Energy (DOE) has reached 8 million tons of uranium mill tailings removed from the Moab site in Utah under the Uranium Mill Tailings Remedial Action Project.

  15. Double Retort System for Materials Compatibility Testing

    SciTech Connect (OSTI)

    V. Munne; EV Carelli

    2006-02-23

    With Naval Reactors (NR) approval of the Naval Reactors Prime Contractor Team (NRPCT) recommendation to develop a gas cooled reactor directly coupled to a Brayton power conversion system as the Space Nuclear Power Plant (SNPP) for Project Prometheus (References a and b) there was a need to investigate compatibility between the various materials to be used throughout the SNPP. Of particular interest was the transport of interstitial impurities from the nickel-base superalloys, which were leading candidates for most of the piping and turbine components to the refractory metal alloys planned for use in the reactor core. This kind of contamination has the potential to affect the lifetime of the core materials. This letter provides technical information regarding the assembly and operation of a double retort materials compatibility testing system and initial experimental results. The use of a double retort system to test materials compatibility through the transfer of impurities from a source to a sink material is described here. The system has independent temperature control for both materials and is far less complex than closed loops. The system is described in detail and the results of three experiments are presented.

  16. Steelhead Spawning Surveys Near Locke Island, Hanford Reach of the Columbia River

    SciTech Connect (OSTI)

    DR Geist; RP Mueller

    1999-10-19

    In 1997, the National Marine Fisheries Service (NMFS) listed upper Columbia River steelhead trout (Oncorhynchus znykiss) as endangered. This action affected management of land-use activities along and within the Hanford Reach of the Columbia River, which flows through the U.S. Department of Energy (DOE) Hanford Site. Steelhead covered in this listing include all naturally spawned populations of steel-head and their progeny in streams in the Columbia River Basin upstream from the Yakima River to the United States/Canada border. The NMFS has identified a general listing of activities that could potentially result in harm to steelhead (62 FR 43937, August 18, 1997). One of these concerns includes land-use changes resulting in mass wasting or surface erosion. Landslide activity along the White Bluffs on the east ,side of Locke Island has redirected river flow into the island where substantial erosion has occurred. This erosion has exposed important anthropological and archaeological resources that were previously buried on the island. The DOE is working with affected tribes and other agencies to develop a plan for addressing the erosion of Locke Island. As part of this effort, the U.S. Army Corps of Engineers has prepared an assessment of potential alternatives to stabilize the erosion, including a no-action alternative. Steelhead historically spawned in the vicinity of Locke Island, but recent information on the occurrence of steelhead spawning or availability of spawning habitat was lacking. Therefore, the purpose of this study was to determine if steelhead spawned in the vicinity of Locke Island erosion and to evaluate the composition of substrate in the affected area. Surveys to document the occurrence of steelheads redds were conducted in Spring 1999. The surveys were conducted from the air as well as with the use of an underwater video camera. Neither aerial nor underwater surveys documented steelhead spawning within the survey area. Habitat surveys were

  17. Radiochemical tracers as a mix diagnostic for the ignition double...

    Office of Scientific and Technical Information (OSTI)

    for the ignition double-shell capsule One of the most important challenges confronting laser-driven capsule implosion experiments will be a quantitative evaluation of the...

  18. Simulations of Cyclic Voltammetry for Electric Double Layers...

    Office of Scientific and Technical Information (OSTI)

    Simulations of Cyclic Voltammetry for Electric Double Layers in Asymmetric Electrolytes: A Generalized Modified PoissonNernstPlanck Model Citation Details In-Document Search...

  19. Status Update of the Majorana Demonstrator Neutrinoless Double...

    Office of Scientific and Technical Information (OSTI)

    Neutrinoless double beta decay searches play a major role in determining neutrino properties, in particular the Majorana or Dirac nature of the neutrino and the absolute scale of ...

  20. HANFORD DOUBLE SHELL TANK THERMAL AND SEISMIC PROJECT BUCKLING...

    Office of Scientific and Technical Information (OSTI)

    Title: HANFORD DOUBLE SHELL TANK THERMAL AND SEISMIC PROJECT BUCKLING EVALUATION METHODS ... The analysis must account for the variation in design details and operating conditions ...

  1. High School Academic Competition - Double Elimination | U.S....

    Office of Science (SC) Website

    NSB Home About High School Middle School Attending National Event Volunteers 2015 ... School Double Elimination Top Teams for 2015 News Media WDTS Home Contact Information ...

  2. Middle School Academic Competition - Double Elimination | U.S...

    Office of Science (SC) Website

    NSB Home About High School Middle School Attending National Event Volunteers 2015 ... School Double Elimination Top Teams for 2015 News Media WDTS Home Contact Information ...

  3. Exploring the Neutrinoless Double Beta Decay in the Inverted...

    Office of Scientific and Technical Information (OSTI)

    Neutrinoless double beta decay (0) is one of the most sensitive probes for physics beyond the Standard Model, providing unique information on the nature of neutrinos. In this ...

  4. Transport in interacting 1D double quantum wires

    Office of Scientific and Technical Information (OSTI)

    Transport in interacting 1D double-- quantum wires Michael Lilly Center for Integrated Nanotechnologies Sandia National Laboratories Collaborators Dominique Laroche, Guillaume ...

  5. High speed double quantum 1H MAS NMR spectroscopy investigations...

    Office of Scientific and Technical Information (OSTI)

    of water dynamics in materials. Citation Details In-Document Search Title: High speed double quantum 1H MAS NMR spectroscopy investigations of water dynamics in ...

  6. Neutron Interactions in the CUORE Neutrinoless Double Beta Decay...

    Office of Scientific and Technical Information (OSTI)

    Interactions in the CUORE Neutrinoless Double Beta Decay Experiment Dolinski, M J 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS;...

  7. What can we learn from neutrinoless double beta decay experiments...

    Office of Scientific and Technical Information (OSTI)

    What can we learn from neutrinoless double beta decay experiments? Citation Details ... Country of Publication: United States Language: English Subject: 72 nucleus, semileptonic ...

  8. Double Shell Tank (DST) Utilities Specification

    SciTech Connect (OSTI)

    SUSIENE, W.T.

    2000-04-27

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

  9. Double-rotor rotary engine and turbine

    SciTech Connect (OSTI)

    Lin, A.S.

    1990-04-03

    This patent describes a double-rotor engine. It comprises: a base; a housing rotatably mounted to the base and forming a radial cylinder; an output shaft rotatably mounted concentric with the housing and having an arm rigidly extending therefrom within the housing; a piston slidingly engaging the cylinder and forming a combustion chamber with the cylinder; means for admitting a fuel-air mixture into the cylinder; means for releasing combustion products from the cylinder following operation of the expanding means; turbine means operatively connected between the base and the housing, the turbine means providing a torque reaction against the housing in response to flow of the combustion products from the releasing means; and stop means on the shaft for limiting the relative movement between the shaft and the housing.

  10. Heavy-fermion instability in double-degenerate plasmas

    SciTech Connect (OSTI)

    Akbari-Moghanjoughi, M.

    2012-07-15

    In this work, we study the propagations of normal frequency modes for quantum hydrodynamic waves in the linear limit and introduce a new kind of instability in a double-degenerate plasma. Three different regimes, namely, low, intermediate, and high magnetic field strengths are considered which span the applicability of the work to a wide variety of environments. Distinct behavior is observed for different regimes, for instance, in the laboratory-scale field regime no frequency-mode instability occurs unlike those of intermediate and high magnetic-field strength regimes. It is also found that the instability of this kind is due to the heavy-fermions which appear below a critical effective-mass parameter ({mu}{sub cr}={radical}(3)) and that the responses of the two (lower and upper frequency) modes to fractional effective-mass change in different effective-mass parameter ranges (below and above the critical value) are quite opposite to each other. It is shown that the heavy-fermion instability due to extremely high magnetic field such as that encountered for a neutron-star crust can lead to confinement of stable propagations in both lower and upper frequency modes to the magnetic poles. Current study can have important implications for linear wave dynamics in both laboratory and astrophysical environments possessing high magnetic fields.

  11. A Segmented, Enriched N-type Germanium Detector for Neutrinoless Double Beta-Decay Experiments

    SciTech Connect (OSTI)

    Leviner, L.; Aalseth, Craig E.; Ahmed, M. W.; Avignone, F. T.; Back, Henning O.; Barabash, Alexander S.; Boswell, M.; De Braeckeleer, L.; Brudanin, V.; Chan, Yuen-Dat; Egorov, Viatcheslav; Elliott, Steven R.; Gehman, Victor M.; Hossbach, Todd W.; Kephart, Jeremy; Kidd, M. F.; Konovalov, S.; Lesko, Kevin; Li, Jingyi; Mei, Dongming; Mikhailov, S.; Miley, Harry S.; Radford, D. C.; Reeves, James H.; Sandukovsky, Viatcheslav; Umatov, Valdimir; Underwood, T. A.; Tornow, W.; Wu, Y. K.; Young, A.

    2014-01-21

    We present data characterizing the performance of the _rst segmented, N- type Ge detector, isotopically enriched to 85% 76Ge. This detector, based on the Ortec PT6x2 design and referred to as SEGA (Segmented, Enriched Germanium Assembly), was developed as a possible prototype for neutrinoless double beta-decay measurements by the Majorana collaboration. We present some of the general characteristics (including bias potential, efficiency, leakage current, and integral cross-talk) for this detector in its temporary cryostat. We also present an analysis of the resolution of the detector, and demonstrate that for all but two segments there is at least one channel that reaches the Majorana resolution goal below 4 keV FWHM at 2039 keV, and all channels are below 4.5 keV FWHM.

  12. Spawning and abundance of fall chinook salmon (Oncorhynchus tshawytscha) in the Hanford Reach of the Columbia River, 1948--1988

    SciTech Connect (OSTI)

    Dauble, D.D.; Watson, D.G.

    1990-03-01

    The Hanford Reach of the Columbia River provides the only major spawning habitat for the upriver bright (URB) race of fall chinook salmon in the mainstem Columbia River. Hanford Site biologists have conducted aerial surveys of spawning salmon in the Hanford Reach since 1948. This report summarizes data on fall chinook salmon spawning in the Hanford Reach and presents a discussion of factors that may affect population trends. Most data are limited to fisheries agency reports and other working documents. Fisheries management practices in the Columbia River system have changed rapidly over the last decade, particularly under requirements of the Pacific Northwest Power Planning and Conservation Act of 1980. New information has been generated and included in this report. 75 refs., 17 figs., 11 tabs.

  13. Evaluation of Juvenile Fall Chinook Salmon Stranding on the Hanford Reach in the Columbia River, 1998 Interim Report.

    SciTech Connect (OSTI)

    Nugent, John; Newsome, Todd; Nugent, Michael

    2001-07-27

    The Washington Department of Fish and Wildlife (WDFW) has been contracted through the Bonneville Power Administration (BPA) and the Grant County Public Utility District (GCPUD) to perform an evaluation of juvenile fall chinook salmon (Oncorhynchus tshawytscha) stranding on the Hanford Reach. The evaluation, in the second year of a multi-year study, has been developed to assess the impacts of water fluctuations from Priest Rapids Dam on rearing juvenile fall chinook salmon, other fish species, and benthic macroinvertebrates of the Hanford Reach. This document provides the results of the 1998 field season.

  14. Evaluation of Juvenile Fall Chinook Salmon Stranding on the Hanford Reach of the Columbia River, 1999 Annual Report.

    SciTech Connect (OSTI)

    Nugent, John

    2002-01-24

    The Washington Department of Fish and Wildlife (WDFW) has been contracted through the Bonneville Power Administration (BPA) and the Grant County Public Utility District (GCPUD) to perform an evaluation of juvenile fall chinook salmon (Oncorhynchus tshawytscha) stranding on the Hanford Reach. The evaluation, in the third year of a multi-year study, has been developed to assess the impacts of water fluctuations from Priest Rapids Dam on rearing juvenile fall chinook salmon, other fishes, and benthic macroinvertebrates of the Hanford Reach. This document provides the results of the 1999 field season.

  15. Evaluation of Juvenile Fall Chinook Salmon Stranding on the Hanford Reach of the Columbia River, 2000 Annual Report.

    SciTech Connect (OSTI)

    Nugent, John; Nugent, Michael; Brock, Wendy

    2002-05-29

    The Washington Department of Fish and Wildlife (WDFW) has been contracted through the Bonneville Power Administration (BPA) and the Grant County Public Utility District (GCPUD) to perform an evaluation of juvenile fall chinook salmon (Oncorhynchus tshawytscha) stranding on the Hanford Reach. The evaluation, in the fourth year of a multi-year study, has been developed to assess the impacts of water fluctuations from Priest Rapids Dam on rearing juvenile fall chinook salmon, other fishes, and benthic macroinvertebrates of the Hanford Reach. This document provides the results of the 2000 field season.

  16. Evaluation of Juvenile Fall Chinook Salmon Stranding on the Hanford Reach of the Columbia River, 2001 Annual Report.

    SciTech Connect (OSTI)

    Nugent, John; Nugent, Michael; Brock, Wendy

    2002-05-29

    The Washington Department of Fish and Wildlife (WDFW) has been contracted through the Bonneville Power Administration (BPA) and the Grant County Public Utility District (GCPUD) to perform an evaluation of juvenile fall chinook salmon (Oncorhynchus tshawytscha) stranding on the Hanford Reach of the Columbia River. The evaluation, in the fifth year of a multi-year study, has been developed to assess the impacts of water fluctuations from Priest Rapids Dam on rearing juvenile fall chinook salmon, other fishes, and benthic macroinvertebrates of the Hanford Reach. This document provides the results of the 2001 field season.

  17. A revolutionary design of double hull oil tanker

    SciTech Connect (OSTI)

    Akiba, Takehiko; Kitano, Kimio; Sumikama, Yutaka; Tsukuda, Hiroyuki; Toyofuku, Masatsugu; Shibasaki, Kohta; Hah, J.; Furukawa, Koichi

    1995-12-31

    For many years, oil tankers had been designed and constructed based on the single hull concept. However, new regulations which require ``Double Hulls`` in new oil tankers was enacted by the International Maritime Organization (IMO) in 1993. Conventional double hull tankers are designed to have the double hull spaces at the sides and bottoms which are normally used as ballast water tanks in order to reduce oil leakage in case of collision or grounding. Some critics, however, have pointed out various problems with the conventional double hull VLCC, such as difficulties in inspection and coating maintenance of the double hull spaces, higher hull girder still water bending moment, etc. In order to eliminate these potential problems, the authors have proposed a new design concept for double hull tankers. In this concept, the double hull spaces are designed as dry void spaces and the ballast water tanks are arranged in the same style as the single hull design. This paper presents a more detailed study and evaluation of this new concept, concerning the hull structural design, oil outflow probability and economic evaluation in comparison with conventional double hull tanker designs. The authors also show the advantages of this new concept which are beneficial to owners and operators.

  18. Method for double-sided processing of thin film transistors

    DOE Patents [OSTI]

    Yuan, Hao-Chih; Wang, Guogong; Eriksson, Mark A.; Evans, Paul G.; Lagally, Max G.; Ma, Zhenqiang

    2008-04-08

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

  19. Double-regge exchange limit for the γp→ K⁺K⁻p reaction

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Shi, M.; Danilkin, I. V.; Fernández-Ramírez, C.; Mathieu, V.; Pennington, M. R.; Schott, D.; Szczepaniak, A. P.

    2015-02-01

    We apply the generalized Veneziano model (B₅ model) in the double-Regge exchange limit to the γp→K⁺K⁻p reaction. Four different cases defined by the possible combinations of the signature factors of leading Regge exchanges ((K*,a₂/f₂), (K*,ρ/ω), (K*₂,a₂/f₂), and (K*₂,ρ/ω)) have been simulated through the Monte Carlo method. Suitable event candidates for the double-Regge exchange high-energy limit were selected employing Van Hove plots as a better alternative to kinematical cuts in the K⁺K⁻p Dalitz plot. In this way we predict and analyze the double-Regge contribution to the K⁺K⁻p Dalitz plot, which constitutes one of the major backgrounds in the search for strangeonia,more » hybrids and exotics using γp→K⁺K⁻p reaction. We expect that data currently under analysis, and that to come in the future, will allow verification of the double-Regge behavior and a better assessment of this component of the amplitude.« less

  20. Double-regge exchange limit for the γp→ K⁺K⁻p reaction

    SciTech Connect (OSTI)

    Shi, M.; Danilkin, I. V.; Fernández-Ramírez, C.; Mathieu, V.; Pennington, M. R.; Schott, D.; Szczepaniak, A. P.

    2015-02-01

    We apply the generalized Veneziano model (B₅ model) in the double-Regge exchange limit to the γp→K⁺K⁻p reaction. Four different cases defined by the possible combinations of the signature factors of leading Regge exchanges ((K*,a₂/f₂), (K*,ρ/ω), (K*₂,a₂/f₂), and (K*₂,ρ/ω)) have been simulated through the Monte Carlo method. Suitable event candidates for the double-Regge exchange high-energy limit were selected employing Van Hove plots as a better alternative to kinematical cuts in the K⁺K⁻p Dalitz plot. In this way we predict and analyze the double-Regge contribution to the K⁺K⁻p Dalitz plot, which constitutes one of the major backgrounds in the search for strangeonia, hybrids and exotics using γp→K⁺K⁻p reaction. We expect that data currently under analysis, and that to come in the future, will allow verification of the double-Regge behavior and a better assessment of this component of the amplitude.

  1. Double Wall Framing Technique An Example of High Performance, Sustainable Building Envelope Technology

    SciTech Connect (OSTI)

    Kosny, Dr. Jan; Asiz, Andi; Shrestha, Som S; Biswas, Kaushik; Nitin, Shukla

    2015-01-01

    Double wall technologies utilizing wood framing have been well-known and used in North American buildings for decades. Most of double wall designs use only natural materials such as wood products, gypsum, and cellulose fiber insulation, being one of few building envelope technologies achieving high thermal performance without use of plastic foams or fiberglass. Today, after several material and structural design modifications, these technologies are considered as highly thermally efficient, sustainable option for new constructions and sometimes, for retrofit projects. Following earlier analysis performed for U.S. Department of Energy by Fraunhofer CSE, this paper discusses different ways to build double walls and to optimize their thermal performance to minimize the space conditioning energy consumption. Description of structural configuration alternatives and thermal performance analysis are presented as well. Laboratory tests to evaluate thermal properties of used insulation and whole wall system thermal performance are also discussed in this paper. Finally, the thermal loads generated in field conditions by double walls are discussed utilizing results from a joined project performed by Zero Energy Building Research Alliance and Oak Ridge National Laboratory (ORNL), which made possible evaluation of the market viability of low-energy homes built in the Tennessee Valley. Experimental data recorded in two of the test houses built during this field study is presented in this work.

  2. High-field double-pancake superconducting coils and a method of winding

    DOE Patents [OSTI]

    Materna, Peter A.

    1985-01-01

    A double-pancake coil having first and second pancakes may comprise a plurality of conductor means, each conductor means having a different grade and having one or more conductors, wherein each pancake of said double-pancake coil is comprised of inner and outer turns; wherein said inner turns are comprised of at least one of said conductor means wound about an axis and nested within one another; wherein said outer turns are comprised of said inner conductor means and at least one other conductor means co-wound about said inner turns and nested within one another; wherein each of said conductor means is wound along said axis from said first pancake to said second pancake at a different turn.

  3. High-field double-pancake superconducting coils and a method of winding

    DOE Patents [OSTI]

    Materna, P.A.

    1984-01-31

    A double-pancake coil having first and second pancakes may comprise a plurality of conductor means, each conductor means having a different grade and having one or more conductors, wherein each pancake of said double-pancake coil is comprised of inner and outer turns; wherein said inner turns are comprised of at least one of said conductor means wound about an axis and nested within one another; wherein said outer turns are comprised of said inner conductor means and at least one other conductor means co-wound about said inner turns and nested within one another; wherein each of said conductor means is wound along said axis from said first pancake to said second pancake at a different turn.

  4. Assessment of potential impacts of major groundwater contaminants to fall chinook salmon (Oncorhynchus tshawytscha) in the Hanford Reach, Columbia River

    SciTech Connect (OSTI)

    Geist, D.R.; Poston, T.M.; Dauble, D.D.

    1994-10-01

    Past operations of Hanford Site facilities have contaminated the groundwater adjacent to the Hanford Reach of the Columbia River, Washington, with various chemical and radiological constituents. The groundwater is hydraulically connected to the river and contains concentrations of contaminants that sometimes exceed federal and/or state drinking water standards or standards for the protection of aquatic life. For example, concentrations of chromium in shoreline seeps and springs at most 100 Area operable units exceed concentrations found to be toxic to fish. Nitrate and tritium concentrations in shoreline seeps are generally below drinking water standards and concentrations potentially toxic to aquatic life, but nitrate concentrations may be high enough to synergistically interact with and exacerbate chromium toxicity. The Hanford Reach also supports the largest run of fall chinook salmon (Oncorhynchus tshawytscha) in the Columbia River Basin. Numbers of fall chinook salmon returning to the Hanford Reach have increased relative to other mainstem populations during the last 30 years. Groundwater discharge appears to occur near some salmon spawning areas, but contaminants are generally not detectable in surface water samples. The concentration and potential toxicity of contaminants in the interstitial waters of the substrate where fall chinook salmon embryogenesis occurs are presently unknown. New tools are required to characterize the extent of groundwater contaminant discharge to the Hanford Reach and to resolve uncertainties associated with assessment of potential impacts to fall chinook salmon.

  5. New Stream-reach Development (NSD): A Comprehensive Assessment of Hydropower Energy Potential in the United States Final Report

    SciTech Connect (OSTI)

    Kao, Shih-Chieh

    2014-04-25

    The U.S. Department of Energy (DOE) Water Power Program tasked Oak Ridge National Laboratory with evaluating the new stream-reach development (NSD) resource potential of more than 3 million U.S. streams in order to help individuals and organizations evaluate the feasibility of developing new hydropower sources in the United States.

  6. LANL Reaches Waste Shipment Milestone: Waste from Cold War-era weapons production being shipped to WIPP

    Broader source: Energy.gov [DOE]

    LOS ALAMOS, New Mexico, May 31, 2011 — Los Alamos National Laboratory has reached an important milestone in its campaign to ship transuranic (TRU) waste from Cold War-era nuclear operations to the U.S. Department of Energy’s Waste Isolation Pilot Plant (WIPP) near Carlsbad, New Mexico.

  7. Variable thickness double-refracting plate

    DOE Patents [OSTI]

    Hadeishi, Tetsuo

    1976-01-01

    This invention provides an A.C., cyclic, current-controlled, phase retardation plate that uses a magnetic clamp to produce stress birefringence. It was developed for an Isotope-Zeeman Atomic Absorption Spectrometer that uses polarization modulation to effect automatic background correction in atomic absorption trace-element measurements. To this end, the phase retardation plate of the invention is a variable thickness, photoelastic, double-refracting plate that is alternately stressed and released by the magnetic clamp selectively to modulate specific components selected from the group consisting of circularly and plane polarized Zeeman components that are produced in a dc magnetic field so that they correspond respectively to Zeeman reference and transmission-probe absorption components. The polarization modulation changes the phase of these polarized Zeeman components, designated as .sigma. reference and .pi. absorption components, so that every half cycle the components change from a transmission mode to a mode in which the .pi. component is blocked and the .sigma. components are transmitted. Thus, the Zeeman absorption component, which corresponds in amplitude to the amount of the trace element to be measured in a sample, is alternately transmitted and blocked by a linear polarizer, while the circularly polarized reference components are continuously transmitted thereby. The result is a sinusoidally varying output light amplitude whose average corresponds to the amount of the trace element present in the sample.

  8. Coronal electron confinement by double layers

    SciTech Connect (OSTI)

    Li, T. C.; Drake, J. F.; Swisdak, M.

    2013-12-01

    In observations of flare-heated electrons in the solar corona, a longstanding problem is the unexplained prolonged lifetime of the electrons compared to their transit time across the source. This suggests confinement. Recent particle-in-cell (PIC) simulations, which explored the transport of pre-accelerated hot electrons through ambient cold plasma, showed that the formation of a highly localized electrostatic potential drop, in the form of a double layer (DL), significantly inhibited the transport of hot electrons. The effectiveness of confinement by a DL is linked to the strength of the DL as defined by its potential drop. In this work, we investigate the scaling of the DL strength with the hot electron temperature by PIC simulations and find a linear scaling. We demonstrate that the strength is limited by the formation of parallel shocks. Based on this, we analytically determine the maximum DL strength, and also find a linear scaling with the hot electron temperature. The DL strength obtained from the analytic calculation is comparable to that from the simulations. At the maximum strength, the DL is capable of confining a significant fraction of hot electrons in the source.

  9. Double-duct liquid metal magnetohydrodynamic engine

    DOE Patents [OSTI]

    Haaland, Carsten M.

    1997-01-01

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

  10. Double-duct liquid metal magnetohydrodynamic engine

    DOE Patents [OSTI]

    Haaland, Carsten M.

    1995-01-01

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