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  1. Atrium Capital | Open Energy Information

    Open Energy Info (EERE)

    Atrium Capital Jump to: navigation, search Logo: Atrium Capital Name: Atrium Capital Address: 3000 Sand Hill Road, Building 2, Suite 240 Place: Menlo Park, California Zip: 94025...

  2. Directions to Wilson Hall, Fermilab

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

    Directions Both the Fermilab box office and Ramsey Auditorium are located in Wilson Hall, the central laboratory building of Fermi National Accelerator Laboratory, as shown on the map below. Ramsey Auditorium is located at the south end of Wilson Hall. Enter through the Auditorium lobby doors on the ground level at the south end of Wilson Hall. Wilson Hall is clearly visible from the Pine Street entrance. From I-88, exit north at Farnsworth, which becomes Kirk north of Butterfield road. We also

  3. Henderson Hall's Education and Career Fair

    Broader source: Energy.gov [DOE]

    Location: Smith Gym, Henderson Hall, Arlington, VAPOC: Donna FriendWebsite: http://www.mccshh.com/EducationCareerFairFall2014.html

  4. Spring 2015 Henderson Hall Education and Career Fair

    Office of Energy Efficiency and Renewable Energy (EERE)

    Location: Smith Gym, Henderson Hall, Arlington, VAPOC: DOECorporateRecruitment@hq.doe.govWebsite: http://bit.ly/1FRIJOF

  5. Cylindrical geometry hall thruster

    DOE Patents [OSTI]

    Raitses, Yevgeny; Fisch, Nathaniel J.

    2002-01-01

    An apparatus and method for thrusting plasma, utilizing a Hall thruster with a cylindrical geometry, wherein ions are accelerated in substantially the axial direction. The apparatus is suitable for operation at low power. It employs small size thruster components, including a ceramic channel, with the center pole piece of the conventional annular design thruster eliminated or greatly reduced. Efficient operation is accomplished through magnetic fields with a substantial radial component. The propellant gas is ionized at an optimal location in the thruster. A further improvement is accomplished by segmented electrodes, which produce localized voltage drops within the thruster at optimally prescribed locations. The apparatus differs from a conventional Hall thruster, which has an annular geometry, not well suited to scaling to small size, because the small size for an annular design has a great deal of surface area relative to the volume.

  6. The Hall

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

    Hall dynamo effect and nonlinear mode coupling during sawtooth magnetic reconnection W. X. Ding, 1,2 D. L. Brower, 1,2 B. H. Deng, 1 A. F. Almagri, 2,3 D. Craig, 2,3 G. Fiksel, 2,3 V. Mirnov, 2,3 S. C. Prager, 2,3 J. S. Sarff, 2,3 and V. Svidzinski 2,3 1 Electrical Engineering Department, University of California at Los Angeles, Los Angeles, California 90095 2 Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas, University of Wisconsin-Madison, Madison, Wisconsin 53706

  7. Fermilab Wilson Hall and Vicinity

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

    Wilson Hall and Vicinity Wilson Hall Ramsey Auditorium Booster Linac Antiproton Source Leon M. Lederman Science Education Center...

  8. Jefferson Lab Experimental Hall D

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

    D Privacy and Security Notice Skip over navigation search Group This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Hall D Navigation Hall D Main Hall D Engineering Hall D Staff Hall D Safety print version Hall D in October 2014 Related Links CEBAF at 12 GEV JLab Visitor's Center JLab Virtual Tour JLab page for scientists Experimental Hall A Experimental Hall B Experimental Hall C Hall D Task List - HDList

  9. Mary Hall Salishan

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

    From Hall et al, "Maximizing Multiprocessor Performance with the SUIF Compiler", IEEE Computer, Dec. 1996. 50% higher Specfp95 ratio than previously reported 3 1990s View *...

  10. Town Hall with Secretary Moniz

    ScienceCinema (OSTI)

    Energy Secretary Ernest Moniz; Deputy Secretary of Energy Daniel Poneman

    2013-07-25

    In a town hall meeting with Department staff, Energy Secretary Ernest Moniz spoke about his plans for a reorganization of the Energy Department?s management structure. The plans will help better achieve the Department?s key priorities and those of the President, including implementing the President?s Climate Action Plan, ?all of the above? energy strategy and nuclear security agenda. After his remarks, Moniz, joined by Deputy Secretary Dan Poneman, took questions from the audience in the Forrestal Auditorium as well as email questions from other Department locations.

  11. Hall A Annual Report 2013

    SciTech Connect (OSTI)

    Dalton, Mark M.

    2014-02-01

    Report over the experimental activities in Hall A at Thomas Jefferson National Accelerator Facility during 2013.

  12. Hall Ammendment Policy

    Broader source: Energy.gov [DOE]

    Joint statement providing interim policy on processing proposals for leasing DOE real property using the authority in 42 U.S.C. 7256, commonly referred to as the "Hall Amendment."

  13. Jefferson Lab Experimental Hall B

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

    Hall B Privacy and Security Notice Skip over navigation search Group Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Hall B Navigation Hall B Main CLAS CLAS12 Other Expts Run Info Publications Public Interest print version Hall B Main CLAS Collaboration and Hall B CLAS Collaboration Information Phonebook, Opt-in, and Database Reviews and Service Work Login Working Groups

  14. Unconventional Quantum Hall Effect and Tunable Spin Hall Effect...

    Office of Scientific and Technical Information (OSTI)

    to an Isolated MoS2 Trilayer Title: Unconventional Quantum Hall Effect and Tunable Spin Hall Effect in Dirac Materials: Application to an Isolated MoS2 Trilayer Authors: Li, ...

  15. Experimental Hall C | Jefferson Lab

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

    C Jefferson Lab has four experimental halls. Hall C is 150 feet in diameter and 60 feet tall. Hall C houses a High Momentum Spectrometer and provides space for large-installation experiments. These are stand-alone experiments requiring unique or highly specialized detectors, magnets and targeting systems. The research equipment in Hall C is used to study the weak charge of the proton, form factors of simple quark systems, the transition from hadrons to quarks and nuclei with a strange quark

  16. Experimental Hall A | Jefferson Lab

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

    A Jefferson Lab has four experimental halls. Hall A is the largest of these four experimental staging areas. It is 174 feet across and 80 feet tall from the floor to the highest spot on its domed ceiling. The foundation for the hall is 35 feet below ground. Hall A is outfitted with two primary detector systems - both high-resolution spectrometers, each weighing about 3 million pounds or 1,500 short tons. The hall is used primarily for experiments that study the structure of the nucleus and the

  17. WORKFORCE DIVERSITY TOWN HALL

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

    WORKFORCE DIVERSITY TOWN HALL DECEMBER 6, 2011 1:00-2:00 PM FORRESTAL MAIN AUDITORIUM (BROADCAST TO ALL SITES) F O C U S M I S S I O N L E A R N I N G C O N T I N U A L DIVERSITY AND INCLUSION A C C O U N T A B I L I T Y WORKFORCE DIVERSITY TOWN HALL "When any of our citizens are unable to fulfll their potential due to the factors that have nothing to do with their talent, character, or work ethic, then I believe there's a role for government to play." President Barack Obama "I

  18. ARM - Welcome to Study Hall

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

    Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox ...

  19. Experimental Hall B | Jefferson Lab

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

    B Jefferson Lab has four experimental halls. Hall B is the smallest of the experimental staging areas. It is 98 feet in diameter and 65 feet from floor to ceiling. Experiments that take data in Hall B employ beams of either electrons or photons. From 1995 to 2012, the heart of the Hall B physics program involved the use of the CEBAF Large Acceptance Spectrometer, or CLAS. This detector system spanned nearly the full angular range about the target and was specifically developed for the study of

  20. Experimental Hall D | Jefferson Lab

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

    D A fourth experimental hall, known as Hall D, is currently under construction and is scheduled to begin experiments in 2015. The Hall D project consists of an extension to the accelerator tunnel to house a new beam transport line, a dedicated magnet to tag photons created in beam-target interactions, a counting house, cryogenics plant and service buildings. When it is completed, Hall D will make it possible for scientists to study what are known as exotic mesons or hybrids. You can learn more

  1. Experimental Hall B | Jefferson Lab

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

    and electromagnetic calorimeters for electron and neutral particle identification. Major research programs in Hall B include experiments to measure the spectrum of excited ...

  2. Town Hall Questions Answered

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

    8, 2014 CBFO Manager's weekly update to local residents Read Carlsbad Field Office Manager Joe Franco's letter to Eddy and Lea County residents for the week of April 14: at http://1.usa.gov/1mkxm7b Town Hall Questions Answered Q. What is the condition of Panel 7 right now? A. Work teams entering the underground facility as part of ongoing Phase 3 activities are still working to determine the full condition of Panel 7. Initial entries indicate good roof conditions. Q. What's the presumed reason

  3. QER- Comment of Addison Hall

    Broader source: Energy.gov [DOE]

    I and my family own land in Ashfield next to the proposed Kinder Morgan/Tennessee Pipeline route. We are opposed to the pipeline for a variety of reasons, including the highly questionable need for the proposed commodity increase and the inevitable damage to the environment and communities along the proposed route. Addison Hall for the Hall Family Trust.

  4. Anthony Kathryn Hall | Open Energy Information

    Open Energy Info (EERE)

    Anthony Kathryn Hall Jump to: navigation, search Name: Anthony & Kathryn Hall Place: United Kingdom Sector: Wind energy Product: UK-based private wind farm in Highland. References:...

  5. Experimental Hall C | Jefferson Lab

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

    in Hall C is used to study the weak charge of the proton, form factors of simple quark systems, the transition from hadrons to quarks and nuclei with a strange quark embedded....

  6. Sec. Chu Online Town Hall

    Broader source: Energy.gov [DOE]

    Secretary Steven Chu hosted an online town hall to discuss the clean energy and innovation agenda President Obama laid out in his 2011 State of the Union address. (January 26, 2011)

  7. Science and Energy Town Hall

    Broader source: Energy.gov [DOE]

    Watch a live broadcast of the Science & Energy Town Hall on Wednesday, January 20, 2016 from 2:30 p.m. to 3:30 p.m. EST.

  8. Jackie Chen inducted into Alameda County Women's Hall of Fame

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

    inducted into Alameda County Women's Hall of Fame - 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 Fuel Cycle Defense Waste

  9. Jefferson Lab Experimental Hall C

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

    C Privacy and Security Notice Skip over navigation search Group This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? Hall C Navigation Users Public Interest print version HES, HKS and Splitter Qweak spectrometer used to measure proton weak charge 12 GeV Upgrade Upgrade information 12 GeV Experiments SHMS-HMS User's Group User's Group mailing list Newsletter 12 GeV wiki Hall C Collaboration Information

  10. Town Hall meeting | OpenEI Community

    Open Energy Info (EERE)

    picture Submitted by Graham7781(2017) Super contributor 16 November, 2012 - 11:23 LEDS the focus of Monday's 10 a.m. Town Hall Meeting LEDS Town Hall meeting What: OpenEI's...

  11. Hazardous Location

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

    2 Hazardous (Classified) Location IDENTIFIER Y-2000-OR-BJCETTP-0101 DATE January 6, 2000 LESSONS LEARNED STATEMENT- Radios that were not certified as approved for Class I,...

  12. Building Green in Greensburg: City Hall Building

    Broader source: Energy.gov [DOE]

    This poster highlights energy efficiency, renewable energy, and sustainable features of the high-performing City Hall building in Greensburg, Kansas.

  13. Rebuilding It Better: Greensburg, Kansas, City Hall

    SciTech Connect (OSTI)

    D. Egan

    2010-04-13

    This document showcases the LEED-Platinum designed Greensburg City Hall, which was rebuilt green, after a massive tornado destroyed Greensburg, Kansas in May 2007.

  14. Hall-effect arc protector

    DOE Patents [OSTI]

    Rankin, R.A.; Kotter, D.K.

    1997-05-13

    The Hall-Effect Arc Protector is used to protect sensitive electronics from high energy arcs. The apparatus detects arcs by monitoring an electrical conductor, of the instrument, for changes in the electromagnetic field surrounding the conductor which would be indicative of a possible arcing condition. When the magnitude of the monitored electromagnetic field exceeds a predetermined threshold, the potential for an instrument damaging are exists and the control system logic activates a high speed circuit breaker. The activation of the breaker shunts the energy imparted to the input signal through a dummy load to the ground. After the arc condition is terminated, the normal signal path is restored. 2 figs.

  15. Hall-effect arc protector

    DOE Patents [OSTI]

    Rankin, Richard A. (Ammon, ID); Kotter, Dale K. (Shelley, ID)

    1997-01-01

    The Hall-Effect Arc Protector is used to protect sensitive electronics from high energy arcs. The apparatus detects arcs by monitoring an electrical conductor, of the instrument, for changes in the electromagnetic field surrounding the conductor which would be indicative of a possible arcing condition. When the magnitude of the monitored electromagnetic field exceeds a predetermined threshold, the potential for an instrument damaging are exists and the control system logic activates a high speed circuit breaker. The activation of the breaker shunts the energy imparted to the input signal through a dummy load to the ground. After the arc condition is terminated, the normal signal path is restored.

  16. Portland State University Shattuck Hall

    High Performance Buildings Database

    Portland, OR Portland State's Shattuck hall was originally constructed as an elementary school in 1915. In 2007 the university undertook extensive renovations of the building to bring it up to current seismic requirements. In addition to structural improvements, the design team was able to upgraded the building's aging mechanical and electrical systems, upgrade plumbing, and restore the large light wells that bring daylight into the U-shaped building. The resulting building houses Portland State's Architecture department, where students are able to learn from the exposed building systems.

  17. Concept for Reducing Hall Thruster Chamber Wall Erosion with...

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

    Concept for Reducing Hall Thruster Chamber Wall Erosion with Lithium Vapor Shielding. Hall ... This invention addresses these concerns using a lightweight material (liquid lithium) in a ...

  18. Topological Hubbard Model and Its High-Temperature Quantum Hall...

    Office of Scientific and Technical Information (OSTI)

    Topological Hubbard Model and Its High-Temperature Quantum Hall Effect Title: Topological Hubbard Model and Its High-Temperature Quantum Hall Effect Authors: Neupert, Titus ; ...

  19. Building America Top Innovations Hall of Fame Profile - Building...

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

    Top Innovations Hall of Fame Profile - Building America's Top Innovations Propel the Home Building Industry toward Higher Performance Building America Top Innovations Hall of Fame ...

  20. Effective Field Theory of Fractional Quantized Hall Nematics...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Effective Field Theory of Fractional Quantized Hall Nematics Citation Details In-Document Search Title: Effective Field Theory of Fractional Quantized Hall ...

  1. Effective field theory of fractional quantized Hall nematics...

    Office of Scientific and Technical Information (OSTI)

    Effective field theory of fractional quantized Hall nematics Citation Details In-Document Search Title: Effective field theory of fractional quantized Hall nematics Authors: ...

  2. Quantum Anomalous Hall Effect in 2D Organic Topological Insulators...

    Office of Scientific and Technical Information (OSTI)

    Quantum Anomalous Hall Effect in 2D Organic Topological Insulators Citation Details In-Document Search Title: Quantum Anomalous Hall Effect in 2D Organic Topological Insulators ...

  3. Building America Top Innovations Hall of Fame Profile - Building...

    Energy Savers [EERE]

    Building America Top Innovations Hall of Fame Profile - Building Energy Optimization Analysis Method (BEopt) Building America Top Innovations Hall of Fame Profile - Building Energy...

  4. Anomalous spin precession and spin Hall effect in semiconductor...

    Office of Scientific and Technical Information (OSTI)

    Anomalous spin precession and spin Hall effect in semiconductor quantum wells Title: Anomalous spin precession and spin Hall effect in semiconductor quantum wells Authors: Bi, ...

  5. Quantum Hall effects in a Weyl semimetal: Possible application...

    Office of Scientific and Technical Information (OSTI)

    Quantum Hall effects in a Weyl semimetal: Possible application in pyrochlore iridates Title: Quantum Hall effects in a Weyl semimetal: Possible application in pyrochlore iridates ...

  6. Hall County, Texas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    B. Places in Hall County, Texas Estelline, Texas Lakeview, Texas Memphis, Texas Turkey, Texas Retrieved from "http:en.openei.orgwindex.php?titleHallCounty,Texas&oldid...

  7. Ion dynamics in an E??B Hall plasma accelerator

    SciTech Connect (OSTI)

    Young, Christopher V. Lucca Fabris, Andrea; Cappelli, Mark A.

    2015-01-26

    We show the time evolution of the ion velocity distribution function in a Hall plasma accelerator during a 20?kHz natural, quasi-periodic plasma oscillation. We apply a time-synchronized laser induced fluorescence technique at different locations along the channel midline, obtaining time- and spatially resolved ion velocity measurements. Strong velocity and density fluctuations and multiple ion populations are observed throughout the so-called breathing mode ionization instability, opening an experimental window into the detailed ion dynamics and physical processes at the heart of such devices.

  8. Experiment Hall & Beamline | Advanced Photon Source

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

    1104-m-circumference optical bench. The hall floor is made of 1-ft-thick poured concrete. Usual practice in poured concrete construction is the use of evenly spaced cuts in...

  9. OSDBU Federal Contracting Town Hall Meeting

    Broader source: Energy.gov [DOE]

    In June of 2015, John Hale III, Director of the Office of Small and Disadvantaged Business Utilization, served as the moderator for the Federal Contracting Town Hall Meeting during the CelebrAsian...

  10. OpenEI Community - Town Hall meeting

    Open Energy Info (EERE)

    st, 2012 http:en.openei.orgcommunityblogtown-hall-meeting-october-1st-2012

  11. EECBG Success Story: After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green

    Broader source: Energy.gov [DOE]

    The city of West Des Moines, Iowa is used funding to renovate the Historic City Hall building located in Valley Junction, including the installation of four geothermal heating wells, a rooftop covered with vegetation, solar panels and permeable pavers to allow stormwater through to the soil below. Learn more.

  12. Hypernuclei in Hall C | Jefferson Lab

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

    Hypernuclei in Hall C Hypernuclei in Hall C High Resolution Electron Spectrometer The High Resolution Electron Spectrometer (teal and red, top left) was recently built with a grant from Japan's Ministry of Education, Culture, Sports, Science and Technology. The ministry also funded the new splitter magnet (dark green) and the High Resolution Kaon Spectrometer (purple and light green, top right). Nuclear scientists have gone to great lengths to pry open the nucleus and peer deep inside. They've

  13. Deck Those Halls! | Department of Energy

    Energy Savers [EERE]

    Deck Those Halls! Deck Those Halls! December 14, 2010 - 2:24pm Addthis Drew Bittner Writer/Editor, Office of Energy Efficiency and Renewable Energy It's mid-December, so odds are good you've already decorated your home for the holidays. If so, you're ahead of me; it took us about three days to get the lights on the tree and we still have items to put up at home, not to mention lots of Christmas cards to send out. My point is, many of us are pressed for time in this holiday season. Between

  14. Equivalence of donor and acceptor fits of temperature dependent Hall carrier density and Hall mobility data: Case of ZnO

    SciTech Connect (OSTI)

    Brochen, Stphane; Feuillet, Guy; Pernot, Julien

    2014-04-28

    In this work, statistical formulations of the temperature dependence of ionized and neutral impurity concentrations in a semiconductor, needed in the charge balance equation and for carrier scattering calculations, have been developed. These formulations have been used in order to elucidate a confusing situation, appearing when compensating acceptor (donor) levels are located sufficiently close to the conduction (valence) band to be thermally ionized and thereby to emit (capture) an electron to (from) the conduction (valence) band. In this work, the temperature dependent Hall carrier density and Hall mobility data adjustments are performed in an attempt to distinguish the presence of a deep acceptor or a deep donor level, coexisting with a shallower donor level and located near the conduction band. Unfortunately, the present statistical developments, applied to an n-type hydrothermal ZnO sample, lead in both cases to consistent descriptions of experimental Hall carrier density and mobility data and thus do not allow to determine the nature, donor or acceptor, of the deep level. This demonstration shows that the emission of an electron in the conduction band, generally assigned to a (0/+1) donor transition from a donor level cannot be applied systematically and could also be attributed to a (?1/0) donor transition from an acceptor level. More generally, this result can be extended for any semiconductor and also for deep donor levels located close to the valence band (acceptor transition)

  15. TBB-0042- In the Matter of Curtis Hall

    Broader source: Energy.gov [DOE]

    This letter concerns the complaint of retaliation filed by Curtis Hall (the complainant or Mr. Hall) with the Department of Energy under 10 C . F. R. Part 7 0 8 , the DOE Con tractor Employee ...

  16. Fractional quantum spin Hall effect in flat-band checkerboard...

    Office of Scientific and Technical Information (OSTI)

    Fractional quantum spin Hall effect in flat-band checkerboard lattice model Citation Details In-Document Search Title: Fractional quantum spin Hall effect in flat-band checkerboard ...

  17. Phase transitions in quantum Hall multiple layer systems

    SciTech Connect (OSTI)

    Pusep, Yu A.; Fernandes dos Santos, L.; Smirnov, D.; Bakarov, A. K.; Toropov, A. I.

    2013-12-04

    Polarized photoluminescence from multiple well electron systems was studied in the regime of the integer quantum Hall effect. Two quantum Hall ferromagnetic ground states assigned to the uncorrelated miniband quantum Hall state and to the spontaneous interwell phase coherent dimer quantum Hall state were observed. The photoluminescence associated with these states exhibits features caused by finite-size skyrmions. The depolarization of the ferromagnetic ground state was observed in bilayer system.

  18. Diversity and Inclusion Town Hall Program Book | Department of Energy

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

    Town Hall Program Book Diversity and Inclusion Town Hall Program Book As part of a larger effort to create a culture that values diversity, we have been conducting focus groups to engage in a dialog and hear feedback on how diversity can be improved. At the Town Hall, DOE employees will hear the results of these discussions. View the program booklet from the Diversity and Inclusion Town Hall below. For more information about the Department's diversity and inclusion programs, visit

  19. Effective Field Theory of Fractional Quantized Hall Nematics (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Effective Field Theory of Fractional Quantized Hall Nematics Citation Details In-Document Search Title: Effective Field Theory of Fractional Quantized Hall Nematics We present a Landau-Ginzburg theory for a fractional quantized Hall nematic state and the transition to it from an isotropic fractional quantum Hall state. This justifies Lifshitz-Chern-Simons theory - which is shown to be its dual - on a more microscopic basis and enables us to compute a ground state

  20. Newmark-Hall synthetic history development

    SciTech Connect (OSTI)

    Aramayo, G.A.

    1990-11-01

    The methodology used to develop synthetic acceleration time histories with spectral content that envelopes the Newmark-Hall spectra is described. Six acceleration time histories are developed for two conditions of foundation and 3 critical damping factors. The target spectra corresponds to the mediam centered probability level.

  1. The Honorable,Edward Rendell, '. City Hall

    Office of Legacy Management (LM)

    I:! i394 .\ . The Honorable,Edward Rendell, '. City Hall Philadelphia, Pennsylvania 19107 Dear Mayor Rendell : ', ,' . , Secretary of Energy Hazel O',teary has announced-a new approach.to.openness in the Department of Energy (DDE) and its communications with the public. . In support of this initiative, we are.pleased to forward the enclosed information related to the,former. Penn Salt Manufacturing' Co. site in your jurisdiction that performed.work for DOE or its predecessor agencies. This

  2. Town_Hall_Meeting_10_29_15.pdf

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

    Town Hall with Secretary Moniz Town Hall with Secretary Moniz July 18, 2013 - 3:42pm Addthis Secretary Moniz speaks at a townhall with DOE employees on the Departmental reorganization. Dan Leistikow Dan Leistikow Former Director, Office of Public Affairs In a town hall meeting with Department staff, Energy Secretary Ernest Moniz spoke about his plans for a reorganization of the Energy Department's management structure. The plans will help better achieve the Department's key priorities and those

  3. Town Hall with Secretary Moniz | Department of Energy

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

    Town Hall with Secretary Moniz Town Hall with Secretary Moniz July 18, 2013 - 3:42pm Addthis Secretary Moniz speaks at a townhall with DOE employees on the Departmental reorganization. Dan Leistikow Dan Leistikow Former Director, Office of Public Affairs In a town hall meeting with Department staff, Energy Secretary Ernest Moniz spoke about his plans for a reorganization of the Energy Department's management structure. The plans will help better achieve the Department's key priorities and those

  4. Webcast: National Energy Literacy Virtual Town Hall | Department of Energy

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

    Webcast: National Energy Literacy Virtual Town Hall Webcast: National Energy Literacy Virtual Town Hall Webcast: National Energy Literacy Virtual Town Hall On August 5, 2014, the Department of Energy (DOE) hosted a dynamic virtual conversation of ongoing efforts from across the country in utilizing the Energy Literacy Framework to address one of our nations' biggest national challenges, "Energy Illiteracy." The goal of this webinar was to share resources in energy education and provide

  5. Spin-Hall-assisted magnetic random access memory (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Spin-Hall-assisted magnetic random access memory Citation Details In-Document Search Title: Spin-Hall-assisted magnetic random access memory We propose a write scheme for perpendicular spin-transfer torque magnetoresistive random-access memory that significantly reduces the required tunnel current density and write energy. A sub-nanosecond in-plane polarized spin current pulse is generated using the spin-Hall effect, disturbing the stable magnetic state. Subsequent switching

  6. Missed Today's Town Hall with Sec. Chu? | Department of Energy

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

    Missed Today's Town Hall with Sec. Chu? Missed Today's Town Hall with Sec. Chu? January 26, 2011 - 4:02pm Addthis We have the video of today's online town hall event with Secretary Chu up and ready for your viewing. Check it out here. Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs We have the video of today's online town hall event with Secretary Chu up and ready for your viewing. Check it out here. During the event, Secretary Chu highlighted several

  7. Rebuilding It Better: Greensburg, Kansas. City Hall (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-04-01

    This document showcases the LEED-Platinum designed Greensburg City Hall, which was rebuilt green, after a massive tornado destroyed Greensburg, Kansas in May 2007.

  8. NE-24 Gilman Hall, University of California, Certification Documentati...

    Office of Legacy Management (LM)

    ... of Gilman Hall contaminated by MED and AEC activities. 0 Meyers, Sheldon (DOE) to ... actions are documented in the following reports and correspondence: 4 0 Gates, Joseph M. ...

  9. Engineering quantum anomalous/valley Hall states in graphene...

    Office of Scientific and Technical Information (OSTI)

    Engineering quantum anomalousvalley Hall states in graphene via metal-atom adsorption: An ab-initio study Citation Details In-Document Search Title: Engineering quantum anomalous...

  10. Building America Top Innovations Hall of Fame Profile … Unvented...

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

    In addition to influencing builders across the country to adopt unvented, conditioned ... AMERICA TOP INNOVATIONS HALL OF FAME PROFILE INNOVATIONS CATEGORY: 1. Advanced ...

  11. Building America Top Innovations Hall of Fame Profile … High...

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

    ... TOP INNOVATIONS BUILDING AMERICA BUILDING AMERICA TOP INNOVATIONS HALL OF FAME PROFILE Habitat affiliates across the country held "blitz builds" to construct homes for Gulf Coast ...

  12. Hall's Warehouse Corp Solar Project | Open Energy Information

    Open Energy Info (EERE)

    Corp. Solar Project" Retrieved from "http:en.openei.orgwindex.php?titleHall%27sWarehouseCorpSolarProject&oldid397541" Feedback Contact needs updating Image...

  13. Rebuilding It Better: Greensburg, Kansas. City Hall (Brochure)

    Broader source: Energy.gov [DOE]

    This brochure details the energy efficient and sustainable aspects of the LEED Platinum-designated City Hall building in Greensburg, Kansas.

  14. Centre Hall, Pennsylvania: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hall, Pennsylvania: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 40.8475635, -77.6861093 Show Map Loading map... "minzoom":false,"mappingser...

  15. Hall County, Georgia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hall County, Georgia: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 34.30778, -83.804868 Show Map Loading map... "minzoom":false,"mappingserv...

  16. Systems and Methods for Cylindrical Hall Thrusters with Independently...

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

    Systems and Methods for Cylindrical Hall Thrusters with Independently Controllable Ionization and Acceleration Stages Yevgeny Raitses, Nathaniel J. Fisch and Kevin D. Diamant (The...

  17. Robert B. Laughlin and the Fractional Quantum Hall Effect

    Office of Scientific and Technical Information (OSTI)

    Robert B. Laughlin and the Fractional Quantum Hall Effect Resources with Additional Information Robert B. Laughlin Photo Courtesy of LLNL Robert B. Laughlin shared the 1998 Nobel...

  18. Rebuilding It Better: Greensburg, Kansas, City Hall (Brochure)

    SciTech Connect (OSTI)

    Not Available

    2010-09-01

    This brochure details the energy efficient and sustainable aspects of the LEED Platinum-designated City Hall building in Greensburg, Kansas.

  19. Robert B. Laughlin and the Fractional Quantum Hall Effect

    Office of Scientific and Technical Information (OSTI)

    Robert B. Laughlin and the Fractional Quantum Hall Effect Resources with Additional Information Robert B. Laughlin Photo Courtesy of LLNL Robert B. Laughlin shared the 1998 Nobel ...

  20. Lees-Kubota Lecture Hall, Guggenheim 101

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

    SPECIAL SEMINAR - Monday, November 3 rd Lees-Kubota Lecture Hall, Guggenheim 101 11:15am-12:15pm "Perovskite Solar Cells: Towards New Materials and New Applications" Professor Nripan Mathews Nanyang Technological University, Singapore Abstract: Perovskite solar cells have attracted a lot of attention primarily due to its high efficiency (~19%). Much of the attention has focused on CH 3 NH 3 PbI 3 (Eg-1.55eV) whose high performance can be traced to a high absorption coefficient as well

  1. Segmented electrode hall thruster with reduced plume

    DOE Patents [OSTI]

    Fisch, Nathaniel J.; Raitses, Yevgeny

    2004-08-17

    An apparatus and method for thrusting plasma, utilizing a Hall thruster with segmented electrodes along the channel, which make the acceleration region as localized as possible. Also disclosed are methods of arranging the electrodes so as to minimize erosion and arcing. Also disclosed are methods of arranging the electrodes so as to produce a substantial reduction in plume divergence. The use of electrodes made of emissive material will reduce the radial potential drop within the channel, further decreasing the plume divergence. Also disclosed is a method of arranging and powering these electrodes so as to provide variable mode operation.

  2. Ombuds Office Location & Hours

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

    Ombuds Office Location & Hours Ombuds Office Location & Hours Committed to the fair and equitable treatment of all employees, contractors, and persons doing business with the...

  3. Alternative Fueling Station Locator

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

    19,710 alternative fuel stations in the United States Excluding private stations Location details are subject to change. We recommend calling the stations to verify location, hours...

  4. Undulator Hall Air Temperature Fault Scenarios

    SciTech Connect (OSTI)

    Sevilla, J.; Welch, J.; ,

    2010-11-17

    Recent experience indicates that the LCLS undulator segments must not, at any time following tuning, be allowed to change temperature by more than about {+-}2.5 C or the magnetic center will irreversibly shift outside of acceptable tolerances. This vulnerability raises a concern that under fault conditions the ambient temperature in the Undulator Hall might go outside of the safe range and potentially could require removal and retuning of all the segments. In this note we estimate changes that can be expected in the Undulator Hall air temperature for three fault scenarios: (1) System-wide power failure; (2) Heating Ventilation and Air Conditioning (HVAC) system shutdown; and (3) HVAC system temperature regulation fault. We find that for either a system-wide power failure or an HVAC system shutdown (with the technical equipment left on), the short-term temperature changes of the air would be modest due to the ability of the walls and floor to act as a heat ballast. No action would be needed to protect the undulator system in the event of a system-wide power failure. Some action to adjust the heat balance, in the case of the HVAC power failure with the equipment left on, might be desirable but is not required. On the other hand, a temperature regulation failure of the HVAC system can quickly cause large excursions in air temperature and prompt action would be required to avoid damage to the undulator system.

  5. Pair spectrometer hodoscope for Hall D at Jefferson Lab

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

    Barbosa, Fernando J.; Hutton, Charles L.; Sitnikov, Alexandre; Somov, Alexander S.; Somov, S.; Tolstukhin, Ivan

    2015-09-21

    We present the design of the pair spectrometer hodoscope fabricated at Jefferson Lab and installed in the experimental Hall D. The hodoscope consists of thin scintillator tiles; the light from each tile is collected using wave-length shifting fibers and detected using a Hamamatsu silicon photomultiplier. Light collection was measured using relativistic electrons produced in the tagger area of the experimental Hall B.

  6. Energy spectrum, dissipation, and spatial structures in reduced Hall magnetohydrodynamic

    SciTech Connect (OSTI)

    Martin, L. N.; Dmitruk, P.; Gomez, D. O.

    2012-05-15

    We analyze the effect of the Hall term in the magnetohydrodynamic turbulence under a strong externally supported magnetic field, seeing how this changes the energy cascade, the characteristic scales of the flow, and the dynamics of global magnitudes, with particular interest in the dissipation. Numerical simulations of freely evolving three-dimensional reduced magnetohydrodynamics are performed, for different values of the Hall parameter (the ratio of the ion skin depth to the macroscopic scale of the turbulence) controlling the impact of the Hall term. The Hall effect modifies the transfer of energy across scales, slowing down the transfer of energy from the large scales up to the Hall scale (ion skin depth) and carrying faster the energy from the Hall scale to smaller scales. The final outcome is an effective shift of the dissipation scale to larger scales but also a development of smaller scales. Current sheets (fundamental structures for energy dissipation) are affected in two ways by increasing the Hall effect, with a widening but at the same time generating an internal structure within them. In the case where the Hall term is sufficiently intense, the current sheet is fully delocalized. The effect appears to reduce impulsive effects in the flow, making it less intermittent.

  7. Fractional Quantum Hall Effect at Landau Level Filling v=4/11...

    Office of Scientific and Technical Information (OSTI)

    Fractional Quantum Hall Effect at Landau Level Filling v411. Citation Details In-Document Search Title: Fractional Quantum Hall Effect at Landau Level Filling v411. Abstract...

  8. Non-abelian fractional quantum hall effect for fault-resistant...

    Office of Scientific and Technical Information (OSTI)

    Non-abelian fractional quantum hall effect for fault-resistant topological quantum computation. Citation Details In-Document Search Title: Non-abelian fractional quantum hall...

  9. Sandia National Laboratories: Locations

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

    Locations Locations Sandia California CINT photo A national and international presence Sandia operates laboratories, testing facilities, and offices in multiple sites around the United States and participates in research collaborations around the world. Sandia's executive management offices and larger laboratory complex are located in Albuquerque, New Mexico. Our second principal laboratory is located in Livermore, California. Although most of our 9,840 employees work at these two locations,

  10. Spin Hall magnetoresistance at high temperatures

    SciTech Connect (OSTI)

    Uchida, Ken-ichi; Qiu, Zhiyong; Kikkawa, Takashi; Iguchi, Ryo; Saitoh, Eiji

    2015-02-02

    The temperature dependence of spin Hall magnetoresistance (SMR) in Pt/Y{sub 3}Fe{sub 5}O{sub 12} (YIG) bilayer films has been investigated in a high temperature range from room temperature to near the Curie temperature of YIG. The experimental results show that the magnitude of the magnetoresistance ratio induced by the SMR monotonically decreases with increasing the temperature and almost disappears near the Curie temperature. We found that, near the Curie temperature, the temperature dependence of the SMR in the Pt/YIG film is steeper than that of a magnetization curve of the YIG; the critical exponent of the magnetoresistance ratio is estimated to be 0.9. This critical behavior of the SMR is attributed mainly to the temperature dependence of the spin-mixing conductance at the Pt/YIG interface.

  11. Public invited to LANL-sponsored Energy Town Hall

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

    LOS ALAMOS, New Mexico, April 19, 2010-The public is invited to learn about projects in energy conservation, generation, research, and management at an Energy Town Hall April 21. ...

  12. Missed the Town Hall with Secretary Chu? | Department of Energy

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

    the video of the online town hall event with Secretary Chu up and ready for your viewing. ... about 40 minutes of questions from both the in-house audience and the online audiences. ...

  13. Property:Building/FloorAreaTheatresConcertHallsCinemas | Open...

    Open Energy Info (EERE)

    Property Edit with form History Property:BuildingFloorAreaTheatresConcertHallsCinemas Jump to: navigation, search This is a property of type Number. Floor area for Theatres,...

  14. Hall County, Nebraska: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Hide Map This article is a stub. You can help OpenEI by expanding it. Hall County is a county in Nebraska. Its FIPS County Code is 079. It is classified as ASHRAE...

  15. TBH-0042- In the Matter of Curtis Hall

    Broader source: Energy.gov [DOE]

    This Initial Agency Decision involves a whistleblower complaint filed by Mr. Curtis Hall (also referred to as the complainant or the individual) under the Department of Energy (DOE) Contractor...

  16. Generation of magnetic skyrmion bubbles by inhomogeneous spin Hall currents

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | DOE PAGES Generation of magnetic skyrmion bubbles by inhomogeneous spin Hall currents This content will become publicly available on March 7, 2017 « Prev Next » Title: Generation of magnetic skyrmion bubbles by inhomogeneous spin Hall currents Authors: Heinonen, Olle ; Jiang, Wanjun ; Somaily, Hamoud ; te Velthuis, Suzanne G. E. ; Hoffmann, Axel Publication Date: 2016-03-07 OSTI Identifier: 1240477 Type: Publisher's Accepted Manuscript Journal Name: Physical Review B

  17. Microscopic theory of quantum anomalous Hall effect in graphene (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Microscopic theory of quantum anomalous Hall effect in graphene Citation Details In-Document Search Title: Microscopic theory of quantum anomalous Hall effect in graphene Authors: Qiao, Zhenhua ; Jiang, Hua ; Li, Xiao ; Yao, Yugui ; Niu, Qian Publication Date: 2012-03-27 OSTI Identifier: 1098600 Type: Publisher's Accepted Manuscript Journal Name: Physical Review B Additional Journal Information: Journal Volume: 85; Journal Issue: 11; Journal ID: ISSN 1098-0121

  18. Spin Hall Effects in Metallic Antiferromagnets (Journal Article) | DOE

    Office of Scientific and Technical Information (OSTI)

    PAGES Spin Hall Effects in Metallic Antiferromagnets « Prev Next » Title: Spin Hall Effects in Metallic Antiferromagnets Authors: Zhang, Wei ; Jungfleisch, Matthias B. ; Jiang, Wanjun ; Pearson, John E. ; Hoffmann, Axel ; Freimuth, Frank ; Mokrousov, Yuriy Publication Date: 2014-11-04 OSTI Identifier: 1181195 Type: Publisher's Accepted Manuscript Journal Name: Physical Review Letters Additional Journal Information: Journal Volume: 113; Journal Issue: 19; Journal ID: ISSN 0031-9007

  19. Spin Hall effects in metallic antiferromagnets - perspectives for future

    Office of Scientific and Technical Information (OSTI)

    spin-orbitronics (Journal Article) | DOE PAGES Hall effects in metallic antiferromagnets - perspectives for future spin-orbitronics « Prev Next » Title: Spin Hall effects in metallic antiferromagnets - perspectives for future spin-orbitronics Authors: Sklenar, Joseph [1] ; Zhang, Wei [2] ; Jungfleisch, Matthias B. [2] ; Jiang, Wanjun [2] ; Saglam, Hilal [3] ; Pearson, John E. [2] ; Ketterson, John B. [4] Search DOE PAGES for author "Ketterson, John B." Search DOE PAGES for ORCID

  20. Building America Top Innovations Hall of Fame Profile - Building Energy

    Energy Savers [EERE]

    Optimization Analysis Method (BEopt) | Department of Energy America Top Innovations Hall of Fame Profile - Building Energy Optimization Analysis Method (BEopt) Building America Top Innovations Hall of Fame Profile - Building Energy Optimization Analysis Method (BEopt) PDF icon 3_3a_ba_innov_beopt_011713.pdf More Documents & Publications Building Energy Optimization Analysis Method (BEopt) - Building America Top Innovation BEopt Version 2.0: New Features Building America Webinar: Building

  1. Hall effect measurements on InAs nanowires

    SciTech Connect (OSTI)

    Bloemers, Ch.; Grap, T.; Lepsa, M. I.; Moers, J.; Gruetzmacher, D.; Lueth, H.; Trellenkamp, St.; Schaepers, Th.

    2012-10-08

    We have processed Hall contacts on InAs nanowires grown by molecular beam epitaxy using an electron beam lithography process with an extremely high alignment accuracy. The carrier concentrations determined from the Hall effect measurements on these nanowires are lower by a factor of about 4 in comparison with those measured by the common field-effect technique. The results are used to evaluate quantitatively the charging effect of the interface and surface states.

  2. Reversible micromachining locator

    DOE Patents [OSTI]

    Salzer, Leander J. (Los Alamos, NM); Foreman, Larry R. (Los Alamos, NM)

    1999-01-01

    This invention provides a device which includes a locator, a kinematic mount positioned on a conventional tooling machine, a part carrier disposed on the locator and a retainer ring. The locator has disposed therein a plurality of steel balls, placed in an equidistant position circumferentially around the locator. The kinematic mount includes a plurality of magnets which are in registry with the steel balls on the locator. In operation, a blank part to be machined is placed between a surface of a locator and the retainer ring (fitting within the part carrier). When the locator (with a blank part to be machined) is coupled to the kinematic mount, the part is thus exposed for the desired machining process. Because the locator is removably attachable to the kinematic mount, it can easily be removed from the mount, reversed, and reinserted onto the mount for additional machining. Further, the locator can likewise be removed from the mount and placed onto another tooling machine having a properly aligned kinematic mount. Because of the unique design and use of magnetic forces of the present invention, positioning errors of less than 0.25 micrometer for each machining process can be achieved.

  3. Reversible micromachining locator

    DOE Patents [OSTI]

    Salzer, L.J.; Foreman, L.R.

    1999-08-31

    This invention provides a device which includes a locator, a kinematic mount positioned on a conventional tooling machine, a part carrier disposed on the locator and a retainer ring. The locator has disposed therein a plurality of steel balls, placed in an equidistant position circumferentially around the locator. The kinematic mount includes a plurality of magnets which are in registry with the steel balls on the locator. In operation, a blank part to be machined is placed between a surface of a locator and the retainer ring (fitting within the part carrier). When the locator (with a blank part to be machined) is coupled to the kinematic mount, the part is thus exposed for the desired machining process. Because the locator is removably attachable to the kinematic mount, it can easily be removed from the mount, reversed, and reinserted onto the mount for additional machining. Further, the locator can likewise be removed from the mount and placed onto another tooling machine having a properly aligned kinematic mount. Because of the unique design and use of magnetic forces of the present invention, positioning errors of less than 0.25 micrometer for each machining process can be achieved. 7 figs.

  4. Reversible micromachining locator

    DOE Patents [OSTI]

    Salzer, Leander J.; Foreman, Larry R.

    2002-01-01

    A locator with a part support is used to hold a part onto the kinematic mount of a tooling machine so that the part can be held in or replaced in exactly the same position relative to the cutting tool for machining different surfaces of the part or for performing different machining operations on the same or different surfaces of the part. The locator has disposed therein a plurality of steel balls placed at equidistant positions around the planar surface of the locator and the kinematic mount has a plurality of magnets which alternate with grooves which accommodate the portions of the steel balls projecting from the locator. The part support holds the part to be machined securely in place in the locator. The locator can be easily detached from the kinematic mount, turned over, and replaced onto the same kinematic mount or another kinematic mount on another tooling machine without removing the part to be machined from the locator so that there is no need to touch or reposition the part within the locator, thereby assuring exact replication of the position of the part in relation to the cutting tool on the tooling machine for each machining operation on the part.

  5. Object locating system

    DOE Patents [OSTI]

    Novak, James L.; Petterson, Ben

    1998-06-09

    A sensing system locates an object by sensing the object's effect on electric fields. The object's effect on the mutual capacitance of electrode pairs varies according to the distance between the object and the electrodes. A single electrode pair can sense the distance from the object to the electrodes. Multiple electrode pairs can more precisely locate the object in one or more dimensions.

  6. Berkeley Lab Shower Locations

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

    LBNL ShowerS Shower facilities are available at several locations: Bldg. 2-Main Entry Men's & Women's Bldg. 6-2204,2206 Men's & Women's (limited building access) Bldg. 46-143 Men's...

  7. Object locating system

    DOE Patents [OSTI]

    Novak, J.L.; Petterson, B.

    1998-06-09

    A sensing system locates an object by sensing the object`s effect on electric fields. The object`s effect on the mutual capacitance of electrode pairs varies according to the distance between the object and the electrodes. A single electrode pair can sense the distance from the object to the electrodes. Multiple electrode pairs can more precisely locate the object in one or more dimensions. 12 figs.

  8. Stability of Hall equilibria in neutron star crusts

    SciTech Connect (OSTI)

    Marchant, Pablo; Reisenegger, Andreas; Valdivia, Juan Alejandro; Hoyos, Jaime H.

    2014-12-01

    In the solid crusts of neutron stars, the advection of the magnetic field by the current-carrying electrons, an effect known as Hall drift, should play a very important role as the ions remain essentially fixed (as long as the solid does not break). Although Hall drift preserves the magnetic field energy, it has been argued that it may drive a turbulent cascade to scales at which ohmic dissipation becomes effective, allowing a much faster decay in objects with very strong fields. On the other hand, it has been found that there are 'Hall equilibria', i.e., field configurations that are unaffected by Hall drift. Here we address the crucial question of the stability of these equilibria through axially symmetric (two-dimensional (2D)) numerical simulations of Hall drift and ohmic diffusion, with the simplifying assumption of uniform electron density and conductivity. We demonstrate the 2D stability of a purely poloidal equilibrium, for which ohmic dissipation makes the field evolve toward an attractor state through adjacent stable configurations, around which damped oscillations occur. For this field, the decay scales with the ohmic timescale. We also study the case of an unstable equilibrium consisting of both poloidal and toroidal field components that are confined within the crust. This field evolves into a stable configuration, which undergoes damped oscillations superimposed on a slow evolution toward an attractor, just as the purely poloidal one.

  9. Admittance of multiterminal quantum Hall conductors at kilohertz frequencies

    SciTech Connect (OSTI)

    Hernndez, C.; Consejo, C.; Chaubet, C.; Degiovanni, P.

    2014-03-28

    We present an experimental study of the low frequency admittance of quantum Hall conductors in the [100?Hz, 1?MHz] frequency range. We show that the frequency dependence of the admittance of the sample strongly depends on the topology of the contacts connections. Our experimental results are well explained within the Christen and Bttiker approach for finite frequency transport in quantum Hall edge channels taking into account the influence of the coaxial cables capacitance. In the Hall bar geometry, we demonstrate that there exists a configuration in which the cable capacitance does not influence the admittance measurement of the sample. In this case, we measure the electrochemical capacitance of the sample and observe its dependence on the filling factor.

  10. Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence

    SciTech Connect (OSTI)

    Donato, S.; Servidio, S.; Carbone, V. [Dipartimento di Fisica, Universita della Calabria, I-87036 Cosenza (Italy); Dmitruk, P. [Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Fisica de Buenos Aires, CONICET, Buenos Aires (Argentina); Shay, M. A.; Matthaeus, W. H. [Bartol Research Institute and Department of Physics and Astronomy, University of Delaware, Newark, Delaware 19716 (United States); Cassak, P. A. [Department of Physics, West Virginia University, Morgantown, West Virginia 26506 (United States)

    2012-09-15

    The statistical study of magnetic reconnection events in two-dimensional turbulence has been performed by comparing numerical simulations of magnetohydrodynamics (MHD) and Hall magnetohydrodynamics (HMHD). The analysis reveals that the Hall term plays an important role in turbulence, in which magnetic islands simultaneously reconnect in a complex way. In particular, an increase of the Hall parameter, the ratio of ion skin depth to system size, broadens the distribution of reconnection rates relative to the MHD case. Moreover, in HMHD the local geometry of the reconnection region changes, manifesting bifurcated current sheets and quadrupolar magnetic field structures in analogy to laminar studies, leading locally to faster reconnection processes in this case of reconnection embedded in turbulence. This study supports the idea that the global rate of energy dissipation is controlled by the large scale turbulence, but suggests that the distribution of the reconnection rates within the turbulent system is sensitive to the microphysics at the reconnection sites.

  11. Study of the effects of guide field on Hall reconnection

    SciTech Connect (OSTI)

    Tharp, T. D.; Yamada, M.; Ji, H.; Lawrence, E.; Dorfman, S.; Myers, C.; Yoo, J.; Huang, Y.-M.; Bhattacharjee, A.

    2013-05-15

    The results from guide field studies on the Magnetic Reconnection Experiment (MRX) are compared with results from Hall magnetohydrodynamic (HMHD) reconnection simulation with guide field. The quadrupole field, a signature of two-fluid reconnection at zero guide field, is modified by the presence of a finite guide field in a manner consistent with HMHD simulation. The modified Hall current profile contains reduced electron flows in the reconnection plane, which quantitatively explains the observed reduction of the reconnection rate. The present results are consistent with the hypothesis that the local reconnection dynamics is dominated by Hall effects in the collisionless regime of the MRX plasmas. While very good agreement is seen between experiment and simulations, we note that an important global feature of the experiments, a compression of the guide field by the reconnecting plasma, is not represented in the simulations.

  12. On the question of hysteresis in Hall magnetohydrodynamic reconnection

    SciTech Connect (OSTI)

    Sullivan, Brian P.; Bhattacharjee, A.; Huang Yimin

    2010-11-15

    Controversy has been raised regarding the cause of hysteresis, or bistability, of solutions to the equations that govern the geometry of the reconnection region in Hall magnetohydrodynamic (MHD) systems. This brief communication presents a comparison of the frameworks within which this controversy has arisen and illustrates that the Hall MHD hysteresis originally discovered numerically by Cassak et al. [Phys. Rev. Lett. 95, 235002 (2005)] is a different phenomenon from that recently reported by Zocco et al. [Phys. Plasmas 16, 110703 (2009)] on the basis of analysis and simulations in electron MHD with finite electron inertia. We demonstrate that the analytic prediction of hysteresis in EMHD does not describe or explain the hysteresis originally reported in Hall MHD, which is shown to persist even in the absence of electron inertia.

  13. Hall effect in a strong magnetic field: Direct comparisons of compressible magnetohydrodynamics and the reduced Hall magnetohydrodynamic equations

    SciTech Connect (OSTI)

    Martin, L. N.; Dmitruk, P.; Gomez, D. O.

    2010-11-15

    In this work we numerically test a model of Hall magnetohydrodynamics in the presence of a strong mean magnetic field: the reduced Hall magnetohydrodynamic model (RHMHD) derived by [Gomez et al., Phys. Plasmas 15, 102303 (2008)] with the addition of weak compressible effects. The main advantage of this model lies in the reduction of computational cost. Nevertheless, up until now the degree of agreement with the original Hall MHD system and the range of validity in a regime of turbulence were not established. In this work direct numerical simulations of three-dimensional Hall MHD turbulence in the presence of a strong mean magnetic field are compared with simulations of the weak compressible RHMHD model. The results show that the degree of agreement is very high (when the different assumptions of RHMHD, such as spectral anisotropy, are satisfied). Nevertheless, when the initial conditions are isotropic but the mean magnetic field is maintained strong, the results differ at the beginning but asymptotically reach a good agreement at relatively short times. We also found evidence that the compressibility still plays a role in the dynamics of these systems, and the weak compressible RHMHD model is able to capture these effects. In conclusion the weak compressible RHMHD model is a valid approximation of the Hall MHD turbulence in the relevant physical context.

  14. Inverse spin Hall effect in Pt/(Ga,Mn)As

    SciTech Connect (OSTI)

    Nakayama, H.; Chen, L.; Chang, H. W.; Ohno, H.; Matsukura, F.

    2015-06-01

    We investigate dc voltages under ferromagnetic resonance in a Pt/(Ga,Mn)As bilayer structure. A part of the observed dc voltage is shown to originate from the inverse spin Hall effect. The sign of the inverse spin Hall voltage is the same as that in Py/Pt bilayer structure, even though the stacking order of ferromagnetic and nonmagnetic layers is opposite to each other. The spin mixing conductance at the Pt/(Ga,Mn)As interface is determined to be of the order of 10{sup 19 }m{sup −2}, which is about ten times greater than that of (Ga,Mn)As/p-GaAs.

  15. Nanoconstriction-based spin-Hall nano-oscillator

    SciTech Connect (OSTI)

    Demidov, V. E.; Urazhdin, S.; Zholud, A.; Sadovnikov, A. V.; Demokritov, S. O.

    2014-10-27

    We experimentally demonstrate magnetic nano-oscillators driven by pure spin current produced by the spin Hall effect in a bow tie-shaped nanoconstriction. These devices exhibit single-mode auto-oscillation and generate highly-coherent electronic microwave signals with a significant power and the spectral linewidth as low as 6.2 MHz at room temperature. The proposed simple and flexible device geometry is amenable to straightforward implementation of advanced spintronic structures such as chains of mutually coupled spin-Hall nano-oscillators.

  16. Quantum anomalous Hall effect in topological insulator memory

    SciTech Connect (OSTI)

    Jalil, Mansoor B. A.; Tan, S. G.; Siu, Z. B.

    2015-05-07

    We theoretically investigate the quantum anomalous Hall effect (QAHE) in a magnetically coupled three-dimensional-topological insulator (3D-TI) system. We apply the generalized spin-orbit coupling Hamiltonian to obtain the Hall conductivity ?{sup xy} of the system. The underlying topology of the QAHE phenomenon is then analyzed to show the quantization of ?{sup xy} and its relation to the Berry phase of the system. Finally, we analyze the feasibility of utilizing ?{sup xy} as a memory read-out in a 3D-TI based memory at finite temperatures, with comparison to known magnetically doped 3D-TIs.

  17. VEE-0067- In the Matter of M.L. Halle Oil Service, Inc.

    Broader source: Energy.gov [DOE]

    On August 9, 1999 M.L. Halle Oil Service, Inc. (Halle) of Manchester, New Hampshire, filed an Application for Exception with the Office of Hearings and Appeals (OHA) of the Department of Energy ...

  18. Quantum anomalous Hall effect in single-layer and bilayer graphene...

    Office of Scientific and Technical Information (OSTI)

    Quantum anomalous Hall effect in single-layer and bilayer graphene Citation Details In-Document Search Title: Quantum anomalous Hall effect in single-layer and bilayer graphene ...

  19. 06.27.14 SRS Retirees Town Hall Meeting-Dave Hepner Page...

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

    Meeting-Dave Hepner Page 1 SRSRA TOWN HALL MEETING New Ellenton Community Center JUNE 27, 2014 After reviewing the notes and discussing the Town Hall Meeting held on June 27, 2014,...

  20. Bernhard Mecking steps down as Hall B leader at Jefferson Lab | Jefferson

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

    Lab Bernhard Mecking steps down as Hall B leader at Jefferson Lab Bernhard Mecking Jefferson Lab staff scientist Bernhard Mecking with the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B. Bernhard Mecking steps down as Hall B leader at Jefferson Lab April 2, 2003 On 1 February 2003, Bernhard Mecking stepped down as leader of Hall B to return to full-time research at the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) in Newport News, Virginia.

  1. After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green |

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

    Department of Energy After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green May 9, 2011 - 5:22pm Addthis The restored Historic City Hall building in West Des Moines' Valley Junction neighborhood. | Photo credit: Vicky Saylor The restored Historic City Hall building in West Des Moines' Valley Junction neighborhood. | Photo credit: Vicky Saylor April Saylor April Saylor Former Digital Outreach Strategist,

  2. Dipole Well Location

    Energy Science and Technology Software Center (OSTI)

    1998-08-03

    The problem here is to model the three-dimensional response of an electromagnetic logging tool to a practical situation which is often encountered in oil and gas exploration. The DWELL code provide the electromagnetic fields on the axis of a borehole due to either an electric or a magnetic dipole located on the same axis. The borehole is cylindrical, and is located within a stratified formation in which the bedding planes are not horizontal. The anglemore » between the normal to the bedding planes and the axis of the borehole may assume any value, or in other words, the borehole axis may be tilted with respect to the bedding planes. Additionally, all of the formation layers may have invasive zones of drilling mud. The operating frequency of the source dipole(s) extends from a few Hertz to hundreds of Megahertz.« less

  3. Electric current locator

    DOE Patents [OSTI]

    King, Paul E.; Woodside, Charles Rigel

    2012-02-07

    The disclosure herein provides an apparatus for location of a quantity of current vectors in an electrical device, where the current vector has a known direction and a known relative magnitude to an input current supplied to the electrical device. Mathematical constants used in Biot-Savart superposition equations are determined for the electrical device, the orientation of the apparatus, and relative magnitude of the current vector and the input current, and the apparatus utilizes magnetic field sensors oriented to a sensing plane to provide current vector location based on the solution of the Biot-Savart superposition equations. Description of required orientations between the apparatus and the electrical device are disclosed and various methods of determining the mathematical constants are presented.

  4. AGU SubTER Town Hall Presentation 2015 | Department of Energy

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

    AGU SubTER Town Hall Presentation 2015 AGU SubTER Town Hall Presentation 2015 PDF icon AGU SubTER Townhall 2015.pdf More Documents & Publications SubTER Fact Sheet SubTER Presentation at Town Hall - American Geophysical Union SubTER Crosscut White Paper

  5. METHOD OF LOCATING GROUNDS

    DOE Patents [OSTI]

    Macleish, K.G.

    1958-02-11

    ABS>This patent presents a method for locating a ground in a d-c circult having a number of parallel branches connected across a d-c source or generator. The complete method comprises the steps of locating the ground with reference to the mildpoint of the parallel branches by connecting a potentiometer across the terminals of the circuit and connecting the slider of the potentiometer to ground through a current indicating instrument, adjusting the slider to right or left of the mildpoint so as to cause the instrument to indicate zero, connecting the terminal of the network which is farthest from the ground as thus indicated by the potentiometer to ground through a condenser, impressing a ripple voltage on the circuit, and then measuring the ripple voltage at the midpoint of each parallel branch to find the branch in which is the lowest value of ripple voltage, and then measuring the distribution of the ripple voltage along this branch to determine the point at which the ripple voltage drops off to zero or substantially zero due to the existence of a ground. The invention has particular application where a circuit ground is present which will disappear if the normal circuit voltage is removed.

  6. X-ray K-edge analysis of drain lines in Wilhelm Hall, Ames Laboratory

    SciTech Connect (OSTI)

    Jensen, T.; Whitmore, C. |

    1999-01-05

    From August 12--27, 1998 X-ray K-edge measurements were made on drain lines in seven rooms in Wilhelm Hall, Ames Laboratory. The purpose of these measurements was to determine the extent of thorium (and other heavy metal) contamination inside these pipes. The K-edge method is a noninvasive inspection technique that can provide accurate quantification of heavy metal contamination interior to an object. Of the seven drain lines inspected, one was found to have no significant contamination, three showed significant thorium deposits, two showed mercury contamination, and one line was found to contain mercury, thorium and uranium. The K-edge measurements were found to be consistent with readings from hand-held survey meters, and provided much greater detail on the location and amount of heavy metal contamination.

  7. High School Schedule | The Ames Laboratory

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

    Schedule January 23, 2016 SCHEDULE Location: Engineering Building, Iowa State University campus, Ames, Iowa 7:30 a.m. Registration and Continental Breakfast, Hoover Hall atrium 8:00 a.m. Opening Ceremonies, 2055 Hoover Hall 8:30-11:00 Round-Robin competition (Hoover, Howe & Pearson Halls) 11:00 Announcements, 2055 Hoover Hall 11:15 Tie-breaker round if needed 11:30 - 12:30 Lunch (Union Drive Community Center - tickets provided) 12:30-4:30 p.m. Double-elimination competition (Howe and Hoover

  8. Contactless measurement of alternating current conductance in quantum Hall structures

    SciTech Connect (OSTI)

    Drichko, I. L.; Diakonov, A. M.; Malysh, V. A.; Smirnov, I. Yu.; Ilyinskaya, N. D.; Usikova, A. A.; Galperin, Y. M.; Kummer, M.; Känel, H. von

    2014-10-21

    We report a procedure to determine the frequency-dependent conductance of quantum Hall structures in a broad frequency domain. The procedure is based on the combination of two known probeless methods—acoustic spectroscopy and microwave spectroscopy. By using the acoustic spectroscopy, we study the low-frequency attenuation and phase shift of a surface acoustic wave in a piezoelectric crystal in the vicinity of the electron (hole) layer. The electronic contribution is resolved using its dependence on a transverse magnetic field. At high frequencies, we study the attenuation of an electromagnetic wave in a coplanar waveguide. To quantitatively calibrate these data, we use the fact that in the quantum-Hall-effect regime the conductance at the maxima of its magnetic field dependence is determined by extended states. Therefore, it should be frequency independent in a broad frequency domain. The procedure is verified by studies of a well-characterized p-SiGe/Ge/SiGe heterostructure.

  9. Recent Results of TMD Measurements from Jefferson Lab Hall A

    SciTech Connect (OSTI)

    Jiang, Xiaodong

    2013-10-01

    This slide-show presents results on transverse momentum distributions. The presentation covers: target single-spin asymmetry (SSA) (in parity conserving interactions); Results of JLab Hall A polarized {sup 3}He target TMD measurement; Semi-?inclusive deep-inelastic scattering channels (E06-010); Target single-spin asymmetry A{sub UT}, Collins and Sivers SSA on neutron; Double-spin asymmetry A{sub LT}, extract TMD g{sub 1T} on neutron; Inclusive channels SSA (E06-010, E05-015, E07-013) Target SSA: inclusive {sup 3}He(e,e) quasi-elastic scattering; Target SSA: inclusive {sup 3}He(e,e) deep inelastic-elastic scattering; New SIDIS experiments planned in Hall-A for JLab-12 GeV.

  10. Effects of Enhanced Eathode Electron Emission on Hall Thruster Operation

    SciTech Connect (OSTI)

    Y. Raitses, A. Smirnov and N. J. Fisch

    2009-04-24

    Interesting discharge phenomena are observed that have to do with the interaction between the magnetized Hall thruster plasma and the neutralizing cathode. The steadystate parameters of a highly ionized thruster discharge are strongly influenced by the electron supply from the cathode. The enhancement of the cathode electron emission above its self-sustained level affects the discharge current and leads to a dramatic reduction of the plasma divergence and a suppression of large amplitude, low frequency discharge current oscillations usually related to an ionization instability. These effects correlate strongly with the reduction of the voltage drop in the region with the fringing magnetic field between the thruster channel and the cathode. The measured changes of the plasma properties suggest that the electron emission affects the electron cross-field transport in the thruster discharge. These trends are generalized for Hall thrusters of various configurations.

  11. Precise quantization of anomalous Hall effect near zero magnetic field

    SciTech Connect (OSTI)

    Bestwick, A. J.; Fox, E. J.; Kou, Xufeng; Pan, Lei; Wang, Kang L.; Goldhaber-Gordon, D.

    2015-05-04

    In this study, we report a nearly ideal quantum anomalous Hall effect in a three-dimensional topological insulator thin film with ferromagnetic doping. Near zero applied magnetic field we measure exact quantization in the Hall resistance to within a part per 10,000 and a longitudinal resistivity under 1 Ω per square, with chiral edge transport explicitly confirmed by nonlocal measurements. Deviations from this behavior are found to be caused by thermally activated carriers, as indicated by an Arrhenius law temperature dependence. Using the deviations as a thermometer, we demonstrate an unexpected magnetocaloric effect and use it to reach near-perfect quantization by cooling the sample below the dilution refrigerator base temperature in a process approximating adiabatic demagnetization refrigeration.

  12. Fractionally charged skyrmions in fractional quantum Hall effect

    SciTech Connect (OSTI)

    Balram, Ajit C.; Wurstbauer, U.; Wójs, A.; Pinczuk, A.; Jain, J. K.

    2015-11-26

    The fractional quantum Hall effect has inspired searches for exotic emergent topological particles, such as fractionally charged excitations, composite fermions, abelian and nonabelian anyons and Majorana fermions. Fractionally charged skyrmions, which support both topological charge and topological vortex-like spin structure, have also been predicted to occur in the vicinity of 1/3 filling of the lowest Landau level. The fractional skyrmions, however, are anticipated to be exceedingly fragile, suppressed by very small Zeeman energies. Here we show that, slightly away from 1/3 filling, the smallest manifestations of the fractional skyrmion exist in the excitation spectrum for a broad range of Zeeman energies, and appear in resonant inelastic light scattering experiments as well-defined resonances slightly below the long wavelength spin wave mode. The spectroscopy of these exotic bound states serves as a sensitive tool for investigating the residual interaction between composite fermions, responsible for delicate new fractional quantum Hall states in this filling factor region.

  13. Intermittency in Hall-magnetohydrodynamics with a strong guide field

    SciTech Connect (OSTI)

    Rodriguez Imazio, P.; Martin, L. N.; Dmitruk, P.; Mininni, P. D.; National Center for Atmospheric Research, P.O. Box 3000, Boulder, Colorado 80307

    2013-05-15

    We present a detailed study of intermittency in the velocity and magnetic field fluctuations of compressible Hall-magnetohydrodynamic turbulence with an external guide field. To solve the equations numerically, a reduced model valid when a strong guide field is present is used. Different values for the ion skin depth are considered in the simulations. The resulting data are analyzed computing field increments in several directions perpendicular to the guide field, and building structure functions and probability density functions. In the magnetohydrodynamic limit, we recover the usual results with the magnetic field being more intermittent than the velocity field. In the presence of the Hall effect, field fluctuations at scales smaller than the ion skin depth show a substantial decrease in the level of intermittency, with close to monofractal scaling.

  14. Transition in Electron Transport in a Cylindrical Hall Thruster

    SciTech Connect (OSTI)

    J.B. Parker, Y. Raitses, and N.J. Fisch

    2010-06-02

    Through the use of high-speed camera and Langmuir probe measurements in a cylindrical Hall thruster, we report the discovery of a rotating spoke of increased plasma density and light emission which correlates with increased electron transport across the magnetic field. As cathode electron emission is increased, a sharp transition occurs where the spoke disappears and electron transport decreases. This suggests that a significant fraction of the electron current might be directed through the spoke.

  15. Gradient instabilities of electromagnetic waves in Hall thruster plasma

    SciTech Connect (OSTI)

    Tomilin, Dmitry

    2013-04-15

    This paper presents a linear analysis of gradient plasma instabilities in Hall thrusters. The study obtains and analyzes the dispersion equation of high-frequency electromagnetic waves based on the two-fluid model of a cold plasma. The regions of parameters corresponding to unstable high frequency modes are determined and the dependence of the increments and intrinsic frequencies on plasma parameters is obtained. The obtained results agree with those of previously published studies.

  16. Metal-to-insulator switching in quantum anomalous Hall states

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

    Kou, Xufeng; Pan, Lei; Wang, Jing; Fan, Yabin; Choi, Eun Sang; Lee, Wei -Li; Nie, Tianxiao; Murata, Koichi; Shao, Qiming; Zhang, Shou -Cheng; et al

    2015-10-07

    After decades of searching for the dissipationless transport in the absence of any external magnetic field, quantum anomalous Hall effect (QAHE) was recently achieved in magnetic topological insulator films. However, the universal phase diagram of QAHE and its relation with quantum Hall effect (QHE) remain to be investigated. Here, we report the experimental observation of the giant longitudinal resistance peak and zero Hall conductance plateau at the coercive field in the six quintuple-layer (Cr0.12Bi0.26Sb0.62)2Te3 film, and demonstrate the metal-to-insulator switching between two opposite QAHE plateau states up to 0.3 K. Moreover, the universal QAHE phase diagram is confirmed through themore » angle-dependent measurements. Our results address that the quantum phase transitions in both QAHE and QHE regimes are in the same universality class, yet the microscopic details are different. Additionally, the realization of the QAHE insulating state unveils new ways to explore quantum phase-related physics and applications.« less

  17. Metal-to-insulator switching in quantum anomalous Hall states

    SciTech Connect (OSTI)

    Kou, Xufeng; Pan, Lei; Wang, Jing; Fan, Yabin; Choi, Eun Sang; Lee, Wei -Li; Nie, Tianxiao; Murata, Koichi; Shao, Qiming; Zhang, Shou -Cheng; Wang, Kang L.

    2015-10-07

    After decades of searching for the dissipationless transport in the absence of any external magnetic field, quantum anomalous Hall effect (QAHE) was recently achieved in magnetic topological insulator films. However, the universal phase diagram of QAHE and its relation with quantum Hall effect (QHE) remain to be investigated. Here, we report the experimental observation of the giant longitudinal resistance peak and zero Hall conductance plateau at the coercive field in the six quintuple-layer (Cr0.12Bi0.26Sb0.62)2Te3 film, and demonstrate the metal-to-insulator switching between two opposite QAHE plateau states up to 0.3 K. Moreover, the universal QAHE phase diagram is confirmed through the angle-dependent measurements. Our results address that the quantum phase transitions in both QAHE and QHE regimes are in the same universality class, yet the microscopic details are different. Additionally, the realization of the QAHE insulating state unveils new ways to explore quantum phase-related physics and applications.

  18. Large spin-wave bullet in a ferrimagnetic insulator driven by spin Hall

    Office of Scientific and Technical Information (OSTI)

    effect. (Journal Article) | SciTech Connect Large spin-wave bullet in a ferrimagnetic insulator driven by spin Hall effect. Citation Details In-Document Search Title: Large spin-wave bullet in a ferrimagnetic insulator driven by spin Hall effect. Due to its transverse nature, spin Hall effects (SHE) provide the possibility to excite and detect spin currents and magnetization dynamics even in magnetic insulators. Magnetic insulators are outstanding materials for the investigation of nonlinear

  19. Berry phase mechanism of the anomalous Hall effect in a disordered

    Office of Scientific and Technical Information (OSTI)

    two-dimensional magnetic semiconductor structure. (Journal Article) | SciTech Connect Berry phase mechanism of the anomalous Hall effect in a disordered two-dimensional magnetic semiconductor structure. Citation Details In-Document Search Title: Berry phase mechanism of the anomalous Hall effect in a disordered two-dimensional magnetic semiconductor structure. In this study, the anomalous Hall effect (AHE) arises from the interplay of spin-orbit interactions and ferromagnetic order and is a

  20. SubTER Presentation at Town Hall - American Geophysical Union | Department

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

    of Energy Presentation at Town Hall - American Geophysical Union SubTER Presentation at Town Hall - American Geophysical Union Subter, the Subsurface Crosscut at the Energy Department, conducted a Town Hall meeting to share information and create a dialogue regarding the grand challenges of energy production and storage in the subsurface. The event was held at the AGU Fall Meeting in San Francisco on December 15, 2014. Click here to learn more about SubTER. Open the full slide presentation

  1. FFTF Asbestos Location Tracking Program

    SciTech Connect (OSTI)

    Reynolds, J.A.

    1994-09-15

    An Asbestos Location Tracking Program was prepared to list, locate, and determine Asbestos content and to provide baseline {open_quotes}good faith{close_quotes} for yearly condition inspections for the FFTF Plant and buildings and grounds.

  2. January 22, 2014 in 100E Hildebrand Hall | Center for GasSeparationsR...

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

    January 22, 2014 in 100E Hildebrand Hall Previous Next List Miguel Gonzalez (Dept. of Chemistry, UC Berkeley) Designing Metal-Organic Frameworks for Catalysis Richard Martin...

  3. June 24, 2015 in 100E Hildebrand Hall | Center for Gas SeparationsRele...

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

    4, 2015 in 100E Hildebrand Hall Previous Next List Stephen Meckler (Lawrence Berkeley National Laboratory) Layered Zif-Polymer Composites Accessed through Metal Oxide Precursors...

  4. Tunable Anderson metal-insulator transition in quantum spin-Hall...

    Office of Scientific and Technical Information (OSTI)

    Tunable Anderson metal-insulator transition in quantum spin-Hall insulators Citation ... This content will become publicly available on June 3, 2016 Title: Tunable Anderson ...

  5. Plasma analogy and non-Abelian statistics for Ising-type quantum Hall

    Office of Scientific and Technical Information (OSTI)

    states (Journal Article) | SciTech Connect Plasma analogy and non-Abelian statistics for Ising-type quantum Hall states Citation Details In-Document Search Title: Plasma analogy and non-Abelian statistics for Ising-type quantum Hall states We study the non-Abelian statistics of quasiparticles in the Ising-type quantum Hall states which are likely candidates to explain the observed Hall conductivity plateaus in the second Landau level, most notably the one at filling fraction {nu}=5/2. We

  6. EECBG Success Story: After 105 Years, Historic City Hall in West...

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

    City Hall in West Des Moines, Iowa Goes Green EECBG Success Story: Grant Improves ... of Oro Valley EECBG Success Story: Energy Upgrades to Save Small Arizona Town Big ...

  7. Spring loaded locator pin assembly

    DOE Patents [OSTI]

    Groll, Todd A.; White, James P.

    1998-01-01

    This invention deals with spring loaded locator pins. Locator pins are sometimes referred to as captured pins. This is a mechanism which locks two items together with the pin that is spring loaded so that it drops into a locator hole on the work piece.

  8. Spring loaded locator pin assembly

    DOE Patents [OSTI]

    Groll, T.A.; White, J.P.

    1998-03-03

    This invention deals with spring loaded locator pins. Locator pins are sometimes referred to as captured pins. This is a mechanism which locks two items together with the pin that is spring loaded so that it drops into a locator hole on the work piece. 5 figs.

  9. Beam Position Reconstruction for the g2p Experiment in Hall A at Jefferson Lab

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

    Zhu, Pengjia; Allada, Kalyan; Allison, Trent; Badman, Toby; Camsonne, Alexandre; Chen, Jian-ping; Cummings, Melissa; Gu, Chao; Huang, Min; Liu, Jie; et al

    2015-11-03

    Beam-line equipment was upgraded for experiment E08-027 (g2p) in Hall A at Jefferson Lab. Two beam position monitors (BPMs) were necessary to measure the beam position and angle at the target. A new BPM receiver was designed and built to handle the low beam currents (50-100 nA) used for this experiment. Two new super-harps were installed for calibrating the BPMs. In addition to the existing fast raster system, a slow raster system was installed. We found that before and during the experiment, these new devices were tested and debugged, and their performance was also evaluated. In order to achieve themore » required accuracy (1-2 mm in position and 1-2 mrad in angle at the target location), the data of the BPMs and harps were carefully analyzed, as well as reconstructing the beam position and angle event by event at the target location. Finally, the calculated beam position will be used in the data analysis to accurately determine the kinematics for each event.« less

  10. PREPRINT QUASIPARTICLE AGGREGATION I N THE FRACTIONAL QUANTUM HALL EFFECT

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

    91618 PREPRINT QUASIPARTICLE AGGREGATION I N THE FRACTIONAL QUANTUM HALL EFFECT R. B. Laughlin This paper was prepared for submittal to the Proceedings of the 17th International Conference on the Physics of Semi conductors San Francisco, California August 6-10, 1984 October 10, 1984 This is a preprint of a paper intended for publication in a journal or proceedings. Since changes may be made before publication, this preprint is made available with the un- derstanding that it will not be cited or

  11. Titanium diboride ceramic fiber composites for Hall-Heroult cells

    DOE Patents [OSTI]

    Besmann, T.M.; Lowden, R.A.

    1990-05-29

    An improved cathode structure is described for Hall-Heroult cells for the electrolytic production of aluminum metal. This cathode structure is a preform fiber base material that is infiltrated with electrically conductive titanium diboride using chemical vapor infiltration techniques. The structure exhibits good fracture toughness, and is sufficiently resistant to attack by molten aluminum. Typically, the base can be made from a mat of high purity silicon carbide fibers. Other ceramic or carbon fibers that do not degrade at temperatures below about 1000 C can be used.

  12. Titanium diboride ceramic fiber composites for Hall-Heroult cells

    DOE Patents [OSTI]

    Besmann, Theodore M.; Lowden, Richard A.

    1990-01-01

    An improved cathode structure for Hall-Heroult cells for the electrolytic production of aluminum metal. This cathode structure is a preform fiber base material that is infiltrated with electrically conductive titanium diboride using chemical vapor infiltration techniques. The structure exhibits good fracture toughness, and is sufficiently resistant to attack by molten aluminum. Typically, the base can be made from a mat of high purity silicon carbide fibers. Other ceramic or carbon fibers that do not degrade at temperatures below about 1000 deg. C can be used.

  13. ,The Honorable Thomas Henino City Hall Plaza I

    Office of Legacy Management (LM)

    Department of Energy Washington,. DC 20585 MAR 29 1995 ,The Honorable Thomas Henino City Hall Plaza I Boston, Massachusetts 02201 '. ! Dear Mayor Menino: Even though additional involvement by DOE is,not necessary at this site, we are prepared to respond to any concerns you may have. -' : __ if you have any questions,' please feel free to call me eat 301-427li721 or Dr. W. Alexander Willlams (301-427-1719)~of my staff. ' gyp , ,~.&.Qz J ~ J / d .!~a : T- " ames W. Wagoner I -. Secretary

  14. Topological Hall conductivity of vortex and skyrmion spin textures

    SciTech Connect (OSTI)

    Jalil, M. B. A. Ghee Tan, Seng; Eason, Kwaku; Kong, Jian Feng

    2014-05-07

    We analyze the topological Hall conductivity experienced by conduction electrons whose spins are strongly coupled to axially symmetric spin textures, such as magnetic vortex and skyrmion of types I and II, theoretically by gauge theory, and numerically via micromagnetic simulations. The numerical results are in agreement with the theoretical predictions. Divergence between the two is seen when the vortex/skyrmion core radius is comparable or larger than the element size, and when the skyrmion configuration breaks down at high Dzyaloshinskii-Moriya interaction strength.

  15. Refrigeration Recovery for Experiment Hall High Target Loads

    SciTech Connect (OSTI)

    Peter Knudsen, Venkatarao Ganni, Errol Yuksek, Jonathan Creel

    2010-04-01

    The Qweak experiment at Jefferson Lab (JLab) is a 3000 W hydrogen target scheduled for the summer of 2010 and running for two years until the planned shut-down for 12GeV. The End Station Refrigerator (ESR) supports the three experiment halls, two of which may normally have a hydrogen target. The refrigerator for the ESR is a CTI/Helix 1500 W 4.5-K refrigerator nominally capable of supporting a 1250 W target load at 12 bar and 15-K (plus 1100 W of 4.5-K refrigeration). As such, this refrigerator is not capable of supporting the Qweak experiment target load in its present condition. Additionally, since the installation of an ambient air vaporizer for a single use, two week run duration of a high target load in the summer of 2003 there has been a consistent usage of the Central Helium Liquefier’s (CHL’s) 3 bar 4.5-K helium, supplied via an existing transfer-line to the ESR, for other high target loads. By the fall of 2004, it was apparent that this continued use of CHL’s supercritical helium was routinely being sought by the hall experimenters. As such, a method of refrigeration recovery was proposed to reduce the support required of CHL for these high target loads, including the anticipated Qweak experiment, while utilizing the recovered CHL refrigeration from the target to increase ESR’s 12 bar 15-K capacity.

  16. Hall effect in quantum critical charge-cluster glass

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

    Bozovic, Ivan; Wu, Jie; Bollinger, Anthony T.; Sun, Yujie

    2016-04-04

    Upon doping, cuprates undergo a quantum phase transition from an insulator to a d-wave superconductor. The nature of this transition and of the insulating state is vividly debated. Here, we study the Hall effect in La2-xSrxCuO4 (LSCO) samples doped near the quantum critical point at x ≈ 0.06. Dramatic fluctuations in the Hall resistance appear below TCG ≈ 1.5 K and increase as the sample is cooled down further, signaling quantum critical behavior. We explore the doping dependence of this effect in detail, by studying a combinatorial LSCO library in which the Sr content is varied in extremely fine steps,more » Δx ≈ 0.00008. Furthermore, we observe that quantum charge fluctuations wash out when superconductivity emerges but can be restored when the latter is suppressed by applying a magnetic field, showing that the two instabilities compete for the ground state.« less

  17. Fractionally charged skyrmions in fractional quantum Hall effect

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

    Balram, Ajit C.; Wurstbauer, U.; Wójs, A.; Pinczuk, A.; Jain, J. K.

    2015-11-26

    The fractional quantum Hall effect has inspired searches for exotic emergent topological particles, such as fractionally charged excitations, composite fermions, abelian and nonabelian anyons and Majorana fermions. Fractionally charged skyrmions, which support both topological charge and topological vortex-like spin structure, have also been predicted to occur in the vicinity of 1/3 filling of the lowest Landau level. The fractional skyrmions, however, are anticipated to be exceedingly fragile, suppressed by very small Zeeman energies. Here we show that, slightly away from 1/3 filling, the smallest manifestations of the fractional skyrmion exist in the excitation spectrum for a broad range of Zeemanmore » energies, and appear in resonant inelastic light scattering experiments as well-defined resonances slightly below the long wavelength spin wave mode. The spectroscopy of these exotic bound states serves as a sensitive tool for investigating the residual interaction between composite fermions, responsible for delicate new fractional quantum Hall states in this filling factor region.« less

  18. Hall magnetohydrodynamic reconnection in the plasmoid unstable regime

    SciTech Connect (OSTI)

    Baalrud, S. D.; Bhattacharjee, A.; Huang, Y.-M.; Germaschewski, K.

    2011-09-15

    A set of reduced Hall magnetohydrodynamic (MHD) equations are used to evaluate the stability of large aspect ratio current sheets to the formation of plasmoids (secondary islands). Reconnection is driven by resistivity in this analysis, which occurs at the resistive skin depth d{sub {eta}}{identical_to}S{sub L}{sup -1/2}{radical}(L{nu}{sub A}/{gamma}), where S{sub L} is the Lundquist number, L, the length of the current sheet, {nu}{sub A,} the Alfven speed, and {gamma}, the growth rate. Modifications to a recent resistive MHD analysis [N. F. Loureiro et al., Phys. Plasmas 14, 100703 (2007)] arise when collisions are sufficiently weak that d{sub {eta}} is shorter than the ion skin depth d{sub i}{identical_to}c/{omega}{sub pi}. Secondary islands grow faster in this Hall MHD regime: the maximum growth rate scales as (d{sub i}/L){sup 6/13}S{sub L}{sup 7/13}{nu}{sub A}/L and the number of plasmoids as (d{sub i}/L){sup 1/13}S{sub L}{sup 11/26}, compared to S{sub L}{sup 1/4}{nu}{sub A}/L and S{sup 3/8}, respectively, in resistive MHD.

  19. Mobile Alternative Fueling Station Locator

    SciTech Connect (OSTI)

    Not Available

    2009-04-01

    The Department of Energy's Alternative Fueling Station Locator is available on-the-go via cell phones, BlackBerrys, or other personal handheld devices. The mobile locator allows users to find the five closest biodiesel, electricity, E85, hydrogen, natural gas, and propane fueling sites using Google technology.

  20. Precision zero-home locator

    DOE Patents [OSTI]

    Stone, William J.

    1986-01-01

    A zero-home locator includes a fixed phototransistor switch and a moveable actuator including two symmetrical, opposed wedges, each wedge defining a point at which switching occurs. The zero-home location is the average of the positions of the points defined by the wedges.

  1. Precision zero-home locator

    DOE Patents [OSTI]

    Stone, W.J.

    1983-10-31

    A zero-home locator includes a fixed phototransistor switch and a moveable actuator including two symmetrical, opposed wedges, each wedge defining a point at which switching occurs. The zero-home location is the average of the positions of the points defined by the wedges.

  2. Hall MHD Stability and Turbulence in Magnetically Accelerated Plasmas

    SciTech Connect (OSTI)

    H. R. Strauss

    2012-11-27

    The object of the research was to develop theory and carry out simulations of the Z pinch and plasma opening switch (POS), and compare with experimental results. In the case of the Z pinch, there was experimental evidence of ion kinetic energy greatly in excess of the ion thermal energy. It was thought that this was perhaps due to fine scale turbulence. The simulations showed that the ion energy was predominantly laminar, not turbulent. Preliminary studies of a new Z pinch experiment with an axial magnetic field were carried out. The axial magnetic is relevant to magneto - inertial fusion. These studies indicate the axial magnetic field makes the Z pinch more turbulent. Results were also obtained on Hall magnetohydrodynamic instability of the POS.

  3. Quantitative analytical model for magnetic reconnection in hall magnetohydrodynamics

    SciTech Connect (OSTI)

    Simakov, Andrei N

    2008-01-01

    Magnetic reconnection is of fundamental importance for laboratory and naturally occurring plasmas. Reconnection usually develops on time scales which are much shorter than those associated with classical collisional dissipation processes, and which are not fully understood. While such dissipation-independent (or 'fast') reconnection rates have been observed in particle and Hall magnetohydrodynamics (MHD) simulations and predicted analytically in electron MHD, a quantitative analytical theory of fast reconnection valid for arbitrary ion inertial lengths d{sub i} has been lacking. Here we propose such a theory without a guide field. The theory describes two-dimensional magnetic field diffusion regions, provides expressions for the reconnection rates, and derives a formal criterion for fast reconnection in terms of dissipation parameters and di. It also demonstrates that both open X-point and elongated diffusion regions allow dissipation-independent reconnection and reveals a possibility of strong dependence of the reconnection rates on d{sub i}.

  4. The Hall D solenoid helium refrigeration system at JLab

    SciTech Connect (OSTI)

    Laverdure, Nathaniel A.; Creel, Jonathan D.; Dixon, Kelly d.; Ganni, Venkatarao; Martin, Floyd D.; Norton, Robert O.; Radovic, Sasa

    2014-01-01

    Hall D, the new Jefferson Lab experimental facility built for the 12GeV upgrade, features a LASS 1.85 m bore solenoid magnet supported by a 4.5 K helium refrigerator system. This system consists of a CTI 2800 4.5 K refrigerator cold box, three 150 hp screw compressors, helium gas management and storage, and liquid helium and nitrogen storage for stand-alone operation. The magnet interfaces with the cryo refrigeration system through an LN2-shielded distribution box and transfer line system, both designed and fabricated by JLab. The distribution box uses a thermo siphon design to respectively cool four magnet coils and shields with liquid helium and nitrogen. We describe the salient design features of the cryo system and discuss our recent commissioning experience.

  5. Bayesian Mulitple-Event Location

    Energy Science and Technology Software Center (OSTI)

    2010-03-30

    Bayesloc is a statistical model of the multiple seismic location system, including event hypocenters, corrections to model-based travel time predictions, assessments precision for measurement phase arrival times, and phase lavels which indicate phase ray path.

  6. Mobile Alternative Fueling Station Locator

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

    Energy - Energy Efficiency & Renewable Energy Alternative Fueling Station Locator Fuel Type Biodiesel (B20 and above) Compressed Natural Gas Electric Ethanol (E85) Hydrogen Liquefied Natural Gas (LNG) Liquefied Petroleum Gas (Propane) Location Enter a city, postal code, or address Include private stations Not all stations are open to the public. Choose this option to also search private fueling stations. Search Caution: The AFDC recommends that users verify that stations are open, available

  7. Formation of quantum spin Hall state on Si surface and energy gap scaling

    Office of Scientific and Technical Information (OSTI)

    with strength of spin orbit coupling (Journal Article) | SciTech Connect Formation of quantum spin Hall state on Si surface and energy gap scaling with strength of spin orbit coupling Citation Details In-Document Search Title: Formation of quantum spin Hall state on Si surface and energy gap scaling with strength of spin orbit coupling For potential applications in spintronics and quantum computing, it is desirable to place a quantum spin Hall insulator [i.e., a 2D topological insulator

  8. Hall effect in quantum critical charge-cluster glass (Journal Article) |

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Hall effect in quantum critical charge-cluster glass Citation Details In-Document Search This content will become publicly available on April 4, 2017 Title: Hall effect in quantum critical charge-cluster glass Upon doping, cuprates undergo a quantum phase transition from an insulator to a d-wave superconductor. The nature of this transition and of the insulating state is vividly debated. Here, we study the Hall effect in La2-xSrxCuO4 (LSCO) samples doped near the quantum

  9. Hole carrier in MgB{sub 2} characterized by Hall measurements (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Hole carrier in MgB{sub 2} characterized by Hall measurements Citation Details In-Document Search Title: Hole carrier in MgB{sub 2} characterized by Hall measurements The longitudinal resistivity ({rho}{sub xx}) and Hall coefficient (R{sub H}) were measured for MgB{sub 2} sintered under high pressure. We found that R{sub H} is positive like cuprate high-T{sub c} superconductors, and decreases as the temperature increases for 40 K <T<300K. The cotangent of the

  10. Quantum Anomalous Hall Effect in Hg_1-yMn_yTe Quantum Wells

    SciTech Connect (OSTI)

    Liu, Chao-Xing; Qi, Xiao-Liang; Dai, Xi; Fang, Zhong; Zhang, Shou-Cheng; /Stanford U., Phys. Dept.

    2010-03-19

    The quantum Hall effect is usually observed when the two-dimensional electron gas is subjected to an external magnetic field, so that their quantum states form Landau levels. In this work we predict that a new phenomenon, the quantum anomalous Hall effect, can be realized in Hg{sub 1-y}Mn{sub y}Te quantum wells, without the external magnetic field and the associated Landau levels. This effect arises purely from the spin polarization of the Mn atoms, and the quantized Hall conductance is predicted for a range of quantum well thickness and the concentration of the Mn atoms. This effect enables dissipationless charge current in spintronics devices.

  11. Halls Middle School students get a taste of science at Y-12 | Y-12 National

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

    Security Complex Halls Middle School ... Halls Middle School students get a taste of science at Y-12 Posted: May 21, 2013 - 12:40pm Engineering, science and history experts give Halls Middle School students a taste of science past and present at Y-12. During a visit to the Y-12 National Security Complex on May 20, eighth graders Miller Sullivan, center, and Tyler Young, right, learn what happens to a banana when it is submerged in liquid nitrogen. Darryl Smith, left, was one of four

  12. LOCATION: Johnson County Sheriff's Office

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

    LOCATION: Johnson County Sheriff's Office Criminalistics Laboratory 11890 Sunset Drive Olathe, Kansas 66061 DATE: JULY 15TH - JULY 18TH, 2013 TUITION: MAFS MEMBERS: $550 Non-MAFS Members: $650 HOW TO ENROLL: Follow this link and complete on-line registration. Pay- ment may be made online via PayPal or a company check may be mailed to MAFS Treasurer. Payment information is all located at the registration site: http://www.mafs.net/summer-workshop LODGING AND TRAVEL: Training Rate $107.77 per night

  13. Formation of quantum spin Hall state on Si surface and energy...

    Office of Scientific and Technical Information (OSTI)

    Citation Details In-Document Search Title: Formation of quantum spin Hall ... GrantContract Number: FG02-04ER46148 Type: Accepted Manuscript Journal Name: Scientific Reports ...

  14. LEDS the focus of Monday's 10 a.m. Town Hall Meeting | OpenEI...

    Open Energy Info (EERE)

    LEDS the focus of Monday's 10 a.m. Town Hall Meeting Home > Blogs > Graham7781's blog Graham7781's picture Submitted by Graham7781(2017) Super contributor 16 November, 2012 - 11:23...

  15. Beam Position Reconstruction for the g2p Experiment in Hall A...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Beam Position Reconstruction for the g2p Experiment in Hall A at Jefferson Lab Citation Details In-Document Search Title: Beam Position Reconstruction for the g2p...

  16. Electron Cross-field Transport in a Low Power Cylindrical Hall Thruster

    SciTech Connect (OSTI)

    A. Smirnov; Y. Raitses; N.J. Fisch

    2004-06-24

    Conventional annular Hall thrusters become inefficient when scaled to low power. Cylindrical Hall thrusters, which have lower surface-to-volume ratio, are therefore more promising for scaling down. They presently exhibit performance comparable with conventional annular Hall thrusters. Electron cross-field transport in a 2.6 cm miniaturized cylindrical Hall thruster (100 W power level) has been studied through the analysis of experimental data and Monte Carlo simulations of electron dynamics in the thruster channel. The numerical model takes into account elastic and inelastic electron collisions with atoms, electron-wall collisions, including secondary electron emission, and Bohm diffusion. We show that in order to explain the observed discharge current, the electron anomalous collision frequency {nu}{sub B} has to be on the order of the Bohm value, {nu}{sub B} {approx} {omega}{sub c}/16. The contribution of electron-wall collisions to cross-field transport is found to be insignificant.

  17. Town Hall Meeting October 1st, 2012 | OpenEI Community

    Open Energy Info (EERE)

    Town Hall Meeting October 1st, 2012 Home > Blogs > Graham7781's blog Graham7781's picture Submitted by Graham7781(2017) Super contributor 19 September, 2012 - 13:40 OpenEI Town...

  18. Formation of quantum spin Hall state on Si surface and energy...

    Office of Scientific and Technical Information (OSTI)

    on Si surface and energy gap scaling with strength of spin orbit coupling Title: Formation of quantum spin Hall state on Si surface and energy gap scaling with strength of spin ...

  19. Formation of quantum spin Hall state on Si surface and energy...

    Office of Scientific and Technical Information (OSTI)

    and energy gap scaling with strength of spin orbit coupling Citation Details In-Document Search Title: Formation of quantum spin Hall state on Si surface and energy gap scaling ...

  20. Energy Storage Demonstration Project Locations | Department of...

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

    Demonstration Project Locations Energy Storage Demonstration Project Locations Map of the United States showing the location of Energy Storage Demonstration projects created with ...

  1. Engineering quantum anomalous/valley Hall states in graphene via metal-atom

    Office of Scientific and Technical Information (OSTI)

    adsorption: An ab-initio study (Journal Article) | SciTech Connect Engineering quantum anomalous/valley Hall states in graphene via metal-atom adsorption: An ab-initio study Citation Details In-Document Search Title: Engineering quantum anomalous/valley Hall states in graphene via metal-atom adsorption: An ab-initio study Authors: Ding, Jun ; Qiao, Zhenhua ; Feng, Wanxiang ; Yao, Yugui ; Niu, Qian Publication Date: 2011-11-15 OSTI Identifier: 1101181 Type: Publisher's Accepted Manuscript

  2. Fractional quantum spin Hall effect in flat-band checkerboard lattice model

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Fractional quantum spin Hall effect in flat-band checkerboard lattice model Citation Details In-Document Search Title: Fractional quantum spin Hall effect in flat-band checkerboard lattice model Authors: Li, Wei ; Sheng, D. N. ; Ting, C. S. ; Chen, Yan Publication Date: 2014-08-04 OSTI Identifier: 1180073 Grant/Contract Number: FG02-06ER46305 Type: Publisher's Accepted Manuscript Journal Name: Physical Review B Additional Journal Information: Journal

  3. Quantum Anomalous Hall Effect in 2D Organic Topological Insulators (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Quantum Anomalous Hall Effect in 2D Organic Topological Insulators Citation Details In-Document Search Title: Quantum Anomalous Hall Effect in 2D Organic Topological Insulators Authors: Wang, Z. F. ; Liu, Zheng ; Liu, Feng Publication Date: 2013-05-06 OSTI Identifier: 1102216 Type: Publisher's Accepted Manuscript Journal Name: Physical Review Letters Additional Journal Information: Journal Volume: 110; Journal Issue: 19; Journal ID: ISSN 0031-9007 Publisher:

  4. Quantum anomalous Hall effect in single-layer and bilayer graphene (Journal

    Office of Scientific and Technical Information (OSTI)

    Article) | SciTech Connect Quantum anomalous Hall effect in single-layer and bilayer graphene Citation Details In-Document Search Title: Quantum anomalous Hall effect in single-layer and bilayer graphene Authors: Tse, Wang-Kong ; Qiao, Zhenhua ; Yao, Yugui ; MacDonald, A. H. ; Niu, Qian Publication Date: 2011-04-26 OSTI Identifier: 1100329 Type: Publisher's Accepted Manuscript Journal Name: Physical Review B Additional Journal Information: Journal Volume: 83; Journal Issue: 15; Journal ID:

  5. Reduced spin-Hall effects from magnetic proximity (Journal Article) | DOE

    Office of Scientific and Technical Information (OSTI)

    PAGES Reduced spin-Hall effects from magnetic proximity « Prev Next » Title: Reduced spin-Hall effects from magnetic proximity Authors: Zhang, Wei ; Jungfleisch, Matthias B. ; Jiang, Wanjun ; Liu, Yaohua ; Pearson, John E. ; Velthuis, Suzanne G. E. te ; Hoffmann, Axel ; Freimuth, Frank ; Mokrousov, Yuriy Publication Date: 2015-03-26 OSTI Identifier: 1176970 Grant/Contract Number: AC02-06CH11357 Type: Publisher's Accepted Manuscript Journal Name: Physical Review B Additional Journal

  6. Performance of the Two Aerogel Cherenkov Detectors of the JLab Hall A

    Office of Scientific and Technical Information (OSTI)

    Hadron Spectrometer (Journal Article) | SciTech Connect Journal Article: Performance of the Two Aerogel Cherenkov Detectors of the JLab Hall A Hadron Spectrometer Citation Details In-Document Search Title: Performance of the Two Aerogel Cherenkov Detectors of the JLab Hall A Hadron Spectrometer We report on the design and commissioning of two silica aerogel Cherenkov detectors with different refractive indices. In particular, extraordinary performance in terms of the number of detected

  7. Scattering universality classes of side jump in the anomalous Hall effect

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Scattering universality classes of side jump in the anomalous Hall effect Citation Details In-Document Search Title: Scattering universality classes of side jump in the anomalous Hall effect Authors: Yang, Shengyuan A. ; Pan, Hui ; Yao, Yugui ; Niu, Qian Publication Date: 2011-03-31 OSTI Identifier: 1100161 Type: Publisher's Accepted Manuscript Journal Name: Physical Review B Additional Journal Information: Journal Volume: 83; Journal Issue: 12; Journal

  8. Topological system with a twisting edge band: A position-dependent Hall

    Office of Scientific and Technical Information (OSTI)

    resistance (Journal Article) | SciTech Connect Topological system with a twisting edge band: A position-dependent Hall resistance Citation Details In-Document Search Title: Topological system with a twisting edge band: A position-dependent Hall resistance Authors: Liu, Xuele ; Sun, Qing-feng ; Xie, X. C. Publication Date: 2012-06-27 OSTI Identifier: 1103667 Type: Publisher's Accepted Manuscript Journal Name: Physical Review B Additional Journal Information: Journal Volume: 85; Journal Issue:

  9. Fractional quantum Hall junctions and two-channel Kondo models

    SciTech Connect (OSTI)

    Sandler, Nancy P.; Fradkin, Eduardo

    2001-06-15

    A mapping between fractional quantum Hall (FQH) junctions and the two-channel Kondo model is presented. We discuss this relation in detail for the particular case of a junction of a FQH state at {nu}=1/3 and a normal metal. We show that in the strong coupling regime this junction has a non-Fermi-liquid fixed point. At this fixed point the electron Green{close_quote}s function has a branch cut and the impurity entropy is equal to S=1/2ln2. We construct the space of perturbations at the strong coupling fixed point and find that the dimension of the tunneling operator is 1/2. These properties are strongly reminiscent of the non-Fermi-liquid fixed points of a number of quantum impurity models, particularly the two-channel Kondo model. However we have found that, in spite of these similarities, the Hilbert spaces of these two systems are quite different. In particular, although in a special limit the Hamiltonians of both systems are the same, their Hilbert spaces are not since they are determined by physically distinct boundary conditions. As a consequence the spectrum of operators in the two problems is different.

  10. Habitat Restoration/Enhancement Fort Hall Reservation : 2008 Annual Report.

    SciTech Connect (OSTI)

    Osborne, Hunter

    2009-07-23

    Habitat enhancement, protection and monitoring were the focus of the Resident Fisheries Program during 2008. Enhancement and protection included sloping, fencing and planting wetlands plugs at sites on Spring Creek (Head-waters). Many previously constructed instream structures (rock barbs and wing dams) were repaired throughout the Fort Hall Indian Reservation (Reservation). Physical sampling during 2008 included sediment and depth measurements (SADMS) in Spring Creek at the Car Removal site. SADMS, used to track changes in channel morphology and specifically track movements of silt through Bottoms stream systems were completed for 5 strata on Spring Creek. Water temperature and chemistry were monitored monthly on Spring Creek, Clear Creek, Diggie Creek, and Portneuf (Jimmy Drinks) and Blackfoot rivers. Fish population densities and biomass were sampled in five reservation streams which included nine sites. Sampling protocols were identical to methods used in past years. Numbers of fish in Spring Creek series remained relatively low, however, there was an increase of biomass overall since 1993. Salmonid fry densities were monitored near Broncho Bridge and were similar to 2006, and 2007, however, as in years past, high densities of macrophytes make it very difficult to see fry in addition to lack of field technicians. Mean catch rate by anglers on Bottoms streams stayed the same as 2007 at 1.5/hr. Numbers of fish larger than 18-inches caught by anglers increased from 2007 at .20 to .26/hr.

  11. Press Pass - Press Releases

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

    visit the Lederman Science Center, the ground floor and atrium of Wilson Hall, and the Ramsey Auditorium, where signs will mark the boundaries. Visitors attending the Arts, Lecture...

  12. WINDExchange: School Wind Project Locations

    Wind Powering America (EERE)

    School Wind Project Locations Tips for Using the Google Map On top of the Google Map, use the Country, State, Project Status, and Project Type dropdown lists to filter projects. Along the left margin, use the zooming meter to zoom in or out of your view. In the top left corner, click Reset View to reset all the filters and zooming. Click on Map, Satellite, and Terrain to view the map three different ways. Click and drag the map to move it around. Use the right scroll bar to view the project

  13. Short range radio locator system

    DOE Patents [OSTI]

    McEwan, Thomas E.

    1996-01-01

    A radio location system comprises a wireless transmitter that outputs two megahertz period bursts of two gigahertz radar carrier signals. A receiver system determines the position of the transmitter by the relative arrival of the radar bursts at several component receivers set up to have a favorable geometry and each one having a known location. One receiver provides a synchronizing gating pulse to itself and all the other receivers to sample the ether for the radar pulse. The rate of the synchronizing gating pulse is slightly offset from the rate of the radar bursts themselves, so that each sample collects one finely-detailed piece of information about the time-of-flight of the radar pulse to each receiver each pulse period. Thousands of sequential pulse periods provide corresponding thousand of pieces of information about the time-of-flight of the radar pulse to each receiver, in expanded, not real time. Therefore the signal processing can be done with relatively low-frequency, inexpensive components. A conventional microcomputer is then used to find the position of the transmitter by geometric triangulation based on the relative time-of-flight information.

  14. Short range radio locator system

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-12-31

    A radio location system comprises a wireless transmitter that outputs two megahertz period bursts of two gigahertz radar carrier signals. A receiver system determines the position of the transmitter by the relative arrival of the radar bursts at several component receivers set up to have a favorable geometry and each one having a known location. One receiver provides a synchronizing gating pulse to itself and all the other receivers. The rate of the synchronizing gating pulse is slightly offset from the rate of the radar bursts themselves, so that each sample collects one finely-detailed piece of information about the time-of-flight of the radar pulse to each receiver each pulse period. Thousands of sequential pulse periods provide corresponding thousand of pieces of information about the time-of-flight of the radar pulse to each receiver, in expanded, not real time. Therefore the signal processing can be done with relatively low-frequency, inexpensive components. A conventional microcomputer is then used to find the position of the transmitter by geometric triangulation based on the relative time-of-flight information. 5 figs.

  15. Onset of fast reconnection in Hall magnetohydrodynamics mediated by the plasmoid instability

    SciTech Connect (OSTI)

    Huang Yimin; Bhattacharjee, A.; Sullivan, Brian P.

    2011-07-15

    The role of a super-Alfvenic plasmoid instability in the onset of fast reconnection is studied by means of the largest Hall magnetohydrodynamics simulations to date, with system sizes up to 10{sup 4} ion skin depths (d{sub i}). It is demonstrated that the plasmoid instability can facilitate the onset of rapid Hall reconnection, in a regime where the onset would otherwise be inaccessible because the Sweet-Parker width is significantly above d{sub i}. However, the topology of Hall reconnection is not inevitably a single stable X-point. There exists an intermediate regime where the single X-point topology itself exhibits instability, causing the system to alternate between a single X-point geometry and an extended current sheet with multiple X-points produced by the plasmoid instability. Through a series of simulations with various system sizes relative to d{sub i}, it is shown that system size affects the accessibility of the intermediate regime. The larger the system size is, the easier it is to realize the intermediate regime. Although our Hall magnetohydrodynamics (MHD) model lacks many important physical effects included in fully kinetic models, the fact that a single X-point geometry is not inevitable raises the interesting possibility for the first time that Hall MHD simulations may have the potential to realize reconnection with geometrical features similar to those seen in fully kinetic simulations, namely, extended current sheets and plasmoid formation.

  16. Population Sensitivity Evaluation of Two Candidate Locations...

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

    Population Sensitivity Evaluation of Two Candidate Locations for Possible Small Modular Reactor Siting Population Sensitivity Evaluation of Two Candidate Locations for Possible ...

  17. Fractional quantum Hall effect at Landau level filling ν = 4/11

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

    Pan, W.; Baldwin, K. W.; West, K. W.; Pfeiffer, L. N.; Tsui, D. C.

    2015-01-09

    In this study, we report low temperature electronic transport results on the fractional quantum Hall effect of composite fermions at Landau level filling ν = 4/11 in a very high mobility and low density sample. Measurements were carried out at temperatures down to 15mK, where an activated magnetoresistance Rxx and a quantized Hall resistance Rxy, within 1% of the expected value of h/(4/11)e2, were observed. The temperature dependence of the Rxx minimum at 4/11 yields an activation energy gap of ~ 7 mK. Developing Hall plateaus were also observed at the neighboring states at ν = 3/8 and 5/13.

  18. Ultra-sensitive Hall sensors based on graphene encapsulated in hexagonal boron nitride

    SciTech Connect (OSTI)

    Dauber, Jan; Stampfer, Christoph; Sagade, Abhay A.; Neumaier, Daniel; Oellers, Martin; Watanabe, Kenji; Taniguchi, Takashi

    2015-05-11

    The encapsulation of graphene in hexagonal boron nitride provides graphene on substrate with excellent material quality. Here, we present the fabrication and characterization of Hall sensor elements based on graphene boron nitride heterostructures, where we gain from high mobility and low charge carrier density at room temperature. We show a detailed device characterization including Hall effect measurements under vacuum and ambient conditions. We achieve a current- and voltage-related sensitivity of up to 5700?V/AT and 3?V/VT, respectively, outpacing state-of-the-art silicon and III/V Hall sensor devices. Finally, we extract a magnetic resolution limited by low frequency electric noise of less than 50 nT/?(Hz) making our graphene sensors highly interesting for industrial applications.

  19. Spin Hall magnetoresistance in CoFe2O4/Pt films

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

    Wu, Hao; Qintong, Zhang; Caihua, Wan; Ali, Syed Shahbaz; Yuan, Zhonghui; You, Lu; Wang, Junling; Choi, Yongseong; Han, Xiufeng

    2015-05-13

    Pulse laser deposition and magnetron sputtering techniques have been employed to prepare MgO(001)//CoFe2O4/Pt samples. Cross section transmission electron microscope results prove that the CoFe2O4 film epitaxially grew along (001) direction. X-ray magnetic circular dichroism results show that magnetic proximity effect in this sample is negligible. Magnetoresistance (MR) properties confirm that spin Hall MR (SMR) dominates in this system. Spin Hall effect-induced anomalous Hall voltage was also observed in this sample. Lastly, these results not only demonstrate the universality of SMR effect but also demonstrate the utility in spintronics of CoFe2O4 as a new type of magnetic insulator.

  20. Global Hall-MHD simulations of magnetorotational instability in a plasma Couette flow experiment

    SciTech Connect (OSTI)

    Ebrahimi, F.; Lefebvre, B.; Bhattacharjee, A.; Forest, C. B.

    2011-06-15

    Global MHD and Hall-MHD numerical simulations relevant to the Madison plasma Couette flow experiment (MPCX) have been performed using the extended MHD code NIMROD. The MPCX has been constructed to study the magnetorotational instability (MRI) in a plasma. The two-fluid Hall effect, which is relevant to some astrophysical situations such as protostellar disks, is also expected to be important in the MPCX. Here, we first derive the local Hall dispersion relation including viscosity, extending earlier work by Balbus and Terquem [Astrophys. J. 552, 235 (2001)]. The predictions of the local analysis are then compared with nonlocal calculations of linear stability of the MRI for a parameter range relevant to the MPCX. It is found that the MHD stability limit and mode structure are altered by the Hall term, and nonlocal analysis is necessary to obtain quantitatively reliable predictions for MPCX. Two-fluid physics also significantly changes the nonlinear evolution and saturation of the axisymmetric MRI. Both the Reynolds and Maxwell stresses contribute significantly to momentum transport. In the Hall regime, when the magnetic field is parallel to the rotation axis, the Maxwell stress is larger than the Reynolds stress (similar to the MHD regime). However, when the magnetic field is antiparallel to the rotation axis in the Hall regime, the Reynolds stress is much larger than the Maxwell stress. To further study the role of non-axisymmetric modes, we have also carried out fully nonlinear MHD computations. Non-axisymmetric modes play an increasingly important role as the magnetic Reynolds number increases and grow to large amplitudes in a saturated turbulent state.

  1. Experimental evidences of a large extrinsic spin Hall effect in AuW alloy

    SciTech Connect (OSTI)

    Laczkowski, P.; Rojas-Sánchez, J.-C.

    2014-04-07

    We report an experimental study of a gold-tungsten alloy (7 at. % W concentration in Au host) displaying remarkable properties for spintronics applications using both magneto-transport in lateral spin valve devices and spin-pumping with inverse spin Hall effect experiments. A very large spin Hall angle of about 10% is consistently found using both techniques with the reliable spin diffusion length of 2 nm estimated by the spin sink experiments in the lateral spin valves. With its chemical stability, high resistivity, and small induced damping, this AuW alloy may find applications in the nearest future.

  2. JLab mourns loss of long-time colleague, Hall B staff scientist and senior

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

    YerPI physicist Kim Egiyan | Jefferson Lab long-time colleague, Hall B staff scientist and senior YerPI physicist Kim Egiyan JLab mourns loss of long-time colleague, Hall B staff scientist and senior YerPI physicist Kim Egiyan August 25, 2006 Kim Egiyan Kim Egiyan K.Sh. Egiyan was born on 18 June 1935 in the Armenian village of Mirzik in the Khanlar region of Azerbaijan. Kim attended the Yerevan State University, Yerevan (Armenia) and in 1957, after finishing his studies at the university,

  3. Observation of the Integer Quantum Hall Effect in Record High-Mobility

    Office of Scientific and Technical Information (OSTI)

    Uniform Wafer-Scale Epitaxial Graphene Films Grown on the Si-Face of 6H-SiC(0001). (Journal Article) | SciTech Connect Observation of the Integer Quantum Hall Effect in Record High-Mobility Uniform Wafer-Scale Epitaxial Graphene Films Grown on the Si-Face of 6H-SiC(0001). Citation Details In-Document Search Title: Observation of the Integer Quantum Hall Effect in Record High-Mobility Uniform Wafer-Scale Epitaxial Graphene Films Grown on the Si-Face of 6H-SiC(0001). Abstract not provided.

  4. Disorder Matters in the 5/2 Fractional Quantum Hall Effect (invited).

    Office of Scientific and Technical Information (OSTI)

    (Conference) | SciTech Connect Disorder Matters in the 5/2 Fractional Quantum Hall Effect (invited). Citation Details In-Document Search Title: Disorder Matters in the 5/2 Fractional Quantum Hall Effect (invited). Abstract not provided. Authors: Pan, Wei Publication Date: 2015-01-01 OSTI Identifier: 1244839 Report Number(s): SAND2015-20724C 555991 DOE Contract Number: AC04-94AL85000 Resource Type: Conference Resource Relation: Conference: Proposed for presentation at the International

  5. Tunable Anderson metal-insulator transition in quantum spin-Hall insulators

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Tunable Anderson metal-insulator transition in quantum spin-Hall insulators Citation Details In-Document Search This content will become publicly available on June 3, 2016 Title: Tunable Anderson metal-insulator transition in quantum spin-Hall insulators Authors: Chen, Chui-Zhen ; Liu, Haiwen ; Jiang, Hua ; Sun, Qing-feng ; Wang, Ziqiang ; Xie, X. C. Publication Date: 2015-06-04 OSTI Identifier: 1183777 Grant/Contract Number: FG02-99ER45747 Type:

  6. Understanding the physics of a possible non-Abelian fractional quantum hall

    Office of Scientific and Technical Information (OSTI)

    effect state. (Technical Report) | SciTech Connect SciTech Connect Search Results Technical Report: Understanding the physics of a possible non-Abelian fractional quantum hall effect state. Citation Details In-Document Search Title: Understanding the physics of a possible non-Abelian fractional quantum hall effect state. We wish to present in this report experimental results from a one-year Senior Council Tier-1 LDRD project that focused on understanding the physics of a possible non-Abelian

  7. Energy Department Launches Five New Solar Ready Vets Training Locations,

    Office of Environmental Management (EM)

    Natural Resources | Department of Energy Tribal, and State Officials Receive Training on Restoring Damaged Natural Resources EM, Tribal, and State Officials Receive Training on Restoring Damaged Natural Resources December 29, 2015 - 12:45pm Addthis Willie Preacher was a member of the Shoshone-Bannock Tribes of Fort Hall, Idaho. Willie Preacher was a member of the Shoshone-Bannock Tribes of Fort Hall, Idaho. NEW ORLEANS - Senior EM, Tribal, and state officials gathered for a training on the

  8. Structure transitions induced by the Hall term in homogeneous and isotropic magnetohydrodynamic turbulence

    SciTech Connect (OSTI)

    Miura, H., E-mail: miura.hideaki@nifs.ac.jp [Department of Helical Plasma Research, National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292 (Japan); Araki, K. [Faculty of Engineering, Okayama University of Science, 1-1 Ridai-cho, Okayama 700-0005 (Japan)

    2014-07-15

    Hall effects on local structures in homogeneous, isotropic, and incompressible magnetohydrodynamic turbulence are studied numerically. The transition of vortices from sheet-like to tubular structures induced by the Hall term is found, while the kinetic energy spectrum does not distinguish the two types of structures. It is shown by the use of the sharp low-pass filter that the transition occurs not only in the scales smaller than the ion skin depth but also in a larger scale. The transition is related with the forward energy transfer in the spectral space. Analyses by the use of the sharp low-pass filter show that the nonlinear energy transfer associated with the Hall term is dominated by the forward transfer and relatively local in the wave number space. A projection of the simulation data to a Smagorinsky-type sub-grid-scale model shows that the high wave number component of the Hall term may possibly be replaced by the model effectively.

  9. Analysis of Impacts of a Clean Energy Standard as requested by Chairman Hall

    Reports and Publications (EIA)

    2011-01-01

    This report responds to a request from Chairman Ralph M. Hall for an analysis of the impacts of a Clean Energy Standard (CES). The request, as outlined in the letter included in Appendix A, sets out specific assumptions and scenarios for the study.

  10. Newport News School Board Member Hosting Town Hall Thursday (Daily Press) |

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

    Jefferson Lab Newport News School Board Member Hosting Town Hall Thursday (Daily Press) External Link: http://articles.dailypress.com/2012-03-05/news/dp-nws-ednotebook-0305-20120304_1... By jlab_admin on Tue, 2012-03-06

  11. The impact of Hall physics on magnetized high energy density plasma jets

    SciTech Connect (OSTI)

    Gourdain, P.-A.; Seyler, C. E.; Atoyan, L.; Greenly, J. B.; Hammer, D. A.; Kusse, B. R.; Pikuz, S. A.; Potter, W. M.; Schrafel, P. C.; Shelkovenko, T. A.

    2014-05-15

    Hall physics is often neglected in high energy density plasma jets due to the relatively high electron density of such jets (n{sub e}???10{sup 19}?cm{sup ?3}). However, the vacuum region surrounding the jet has much lower densities and is dominated by Hall electric field. This electric field redirects plasma flows towards or away from the axis, depending on the radial current direction. A resulting change in the jet density has been observed experimentally. Furthermore, if an axial field is applied on the jet, the Hall effect is enhanced and ignoring it leads to serious discrepancies between experimental results and numerical simulations. By combining high currents (?1 MA) and magnetic field helicity (15 angle) in a pulsed power generator such as COBRA, plasma jets can be magnetized with a 10?T axial field. The resulting field enhances the impact of the Hall effect by altering the density profile of current-free plasma jets and the stability of current-carrying plasma jets (e.g., Z-pinches)

  12. WIPP Employee Inducted Into Mine Rescue Hall of Fame- WIPP Teams Recognized at National Competition

    Broader source: Energy.gov [DOE]

    CARLSBAD, N.M., August 2, 2013 - Long-time Waste Isolation Pilot Plant (WIPP) employee Gary Kessler was inducted into the Metal/Non-Metal National Mine Rescue Hall of Fame on Aug. 1, 2013 at the biennial mine rescue competition in Reno, Nevada.

  13. September 24, 2014 in 100E Hildebrand Hall | Center for Gas

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

    SeparationsRelevant to Clean Energy Technologies | Blandine Jerome 4, 2014 in 100E Hildebrand Hall Previous Next List Jihye Park (Dept. of Chemistry, Texas A&M University) Photochromic MOFs: Reversible Generation of Singlet Oxygen Kyungmin Choi (Dept. of Chemistry, UC Berkeley) Supercapacitors of Nanocrystalline Metal-Organic Frameworks

  14. Sandia National Laboratories: Locations: Livermore, California...

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

    Locations Maps and Directions to SandiaCalifornia SandiaCalifornia is located at 7011 East Avenue in Livermore, Calif., a suburban community about 45 miles east of San Francisco. ...

  15. Alternative Fueling Station Locator | Department of Energy

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

    Alternative Fueling Station Locator Alternative Fueling Station Locator Find alternative fueling stations near an address or ZIP code or along a route in the United States. Enter a state to see a station count

  16. Enhanced spin Hall effect by electron correlations in CuBi alloys

    SciTech Connect (OSTI)

    Gu, Bo Xu, Zhuo; Mori, Michiyasu; Maekawa, Sadamichi; Ziman, Timothy

    2015-05-07

    A recent experiment in CuBi alloys obtained a large spin Hall angle (SHA) of ?0.24 (Niimi et al., Phys. Rev. Lett. 109, 156602 (2012)). We find that the SHA can be dramatically enhanced by Bi impurities close to the Cu surface. The mechanisms of this enhancement are two-fold. One is that the localized impurity state on surface has a decreased hybridization and combined with Coulomb correlation effect. The other comes from the low-dimensional state of conduction electrons on surface, which results in a further enhancement of skew scattering by impurities. Furthermore, we note that a discrepancy in sign of SHA between the experiment and previous theories is simply caused by different definitions of SHA. This re-establishes skew scattering as the essential mechanism underlying the spin Hall effect in CuBi alloys.

  17. Edge-channel interferometer at the graphene quantum Hall pn junction

    SciTech Connect (OSTI)

    Morikawa, Sei; Moriya, Rai; Masubuchi, Satoru Machida, Tomoki; Watanabe, Kenji; Taniguchi, Takashi

    2015-05-04

    We demonstrate a quantum Hall edge-channel interferometer in a high-quality graphene pn junction under a high magnetic field. The co-propagating p and n quantum Hall edge channels traveling along the pn interface functions as a built-in Aharonov-Bohm-type interferometer, the interferences in which are sensitive to both the external magnetic field and the carrier concentration. The trajectories of peak and dip in the observed resistance oscillation are well reproduced by our numerical calculation that assumes magnetic flux quantization in the area enclosed by the co-propagating edge channels. Coherent nature of the co-propagating edge channels is confirmed by the checkerboard-like pattern in the dc-bias and magnetic-field dependences of the resistance oscillations.

  18. Sheath oscillation characteristics and effect on near-wall conduction in a krypton Hall thruster

    SciTech Connect (OSTI)

    Zhang, Fengkui Kong, Lingyi; Li, Chenliang; Yang, Haiwei; Li, Wei

    2014-11-15

    Despite its affordability, the krypton Hall-effect thruster in applications always had problems in regard to performance. The reason for this degradation is studied from the perspective of the near-wall conductivity of electrons. Using the particle-in-cell method, the sheath oscillation characteristics and its effect on near-wall conduction are compared in the krypton and xenon Hall-effect thrusters both with wall material composed of BNSiO{sub 2}. Comparing these two thrusters, the sheath in the krypton-plasma thruster will oscillate at low electron temperatures. The near-wall conduction current is only produced by collisions between electrons and wall, thereby causing a deficiency in the channel current. The sheath displays spatial oscillations only at high electron temperature; electrons are then reflected to produce the non-oscillation conduction current needed for the krypton-plasma thruster. However, it is accompanied with intensified oscillations.

  19. Variational principle for linear stability of flowing plasmas in Hall magnetohydrodynamics

    SciTech Connect (OSTI)

    Hirota, M.; Yoshida, Z.; Hameiri, E.

    2006-02-15

    Linear stability of equilibrium states with flow is studied by means of the variational principle in Hall magnetohydrodynamics (MHD). The Lagrangian representation of the linearized Hall MHD equation is performed by considering special perturbations that preserves some constants of motion (the Casimir invariants). The resultant equation has a Hamiltonian structure which enables the variational principle. There is however some difficulties in showing the positive definiteness of the quadratic form in the presence of flow. The dynamically accessible variation is a more restricted class of perturbations which, by definition, preserves all the Casimir invariants. For such variations, the quadratic form (the second variation of Hamiltonian) can be positive definite. Some conditions for stability are derived by applying this variational principle to the double Beltrami equilibrium.

  20. Minimum energy states of the cylindrical plasma pinch in single-fluid and Hall magnetohydrodynamics

    SciTech Connect (OSTI)

    Khalzov, I. V.; Schnack, D. D.; Mirnov, V. V.; Ebrahimi, F.

    2012-01-15

    Relaxed states of a plasma column are found analytically in single-fluid and Hall magnetohydrodynamics (MHD). We perform complete minimization of the energy with constraints imposed by invariants inherent in the corresponding models. It is shown that the relaxed state in Hall MHD is a force-free magnetic field with uniform axial flow and/or rigid azimuthal rotation. In contrast, the relaxed states in single-fluid MHD are more complex due to the coupling between velocity and magnetic field. Cylindrically and helically symmetric relaxed states are considered for both models. Helical states may be time dependent and analogous to helical waves, propagating on a cylindrically symmetric background. Application of our results to reversed-field pinches (RFP) is discussed. The radial profile of the parallel momentum predicted by the single-fluid MHD relaxation theory is shown to be in reasonable agreement with experimental observation from the Madison symmetric torus RFP experiment.

  1. Helicopter magnetic survey conducted to locate wells

    SciTech Connect (OSTI)

    Veloski, G.A.; Hammack, R.W.; Stamp, V.; Hall, R.; Colina, K.

    2008-07-01

    A helicopter magnetic survey was conducted in August 2007 over 15.6 sq mi at the Naval Petroleum Reserve No. 3s (NPR-3) Teapot Dome Field near Casper, Wyoming. The surveys purpose was to accurately locate wells drilled there during more than 90 years of continuous oilfield operation. The survey was conducted at low altitude and with closely spaced flight lines to improve the detection of wells with weak magnetic response and to increase the resolution of closely spaced wells. The survey was in preparation for a planned CO2 flood for EOR, which requires a complete well inventory with accurate locations for all existing wells. The magnetic survey was intended to locate wells missing from the well database and to provide accurate locations for all wells. The ability of the helicopter magnetic survey to accurately locate wells was accomplished by comparing airborne well picks with well locations from an intense ground search of a small test area.

  2. A spin-filter made of quantum anomalous Hall insulator nanowires

    SciTech Connect (OSTI)

    Wu, Jiansheng

    2014-07-28

    Topological end states (TES) in quantum anomalous Hall insulator nanowires can induce tunneling within the gap. Such TES are spin polarized, thus the induced current is spin polarized as well, which can be used to construct a spin-filter applied in spintronics. An interferometry device is designed to control the polarized current as well. The advantage and finite size effect on this system are discussed.

  3. The Honorable Rudolph Giuliani City Hall New York, New York 10007

    Office of Legacy Management (LM)

    Deparhent of Eneigy Washington, DC 20585 ,, , The Honorable Rudolph Giuliani City Hall New York, New York 10007 Dear Mayor Giuljani: :. / Secretary of Energy Hazel O'Leary has announced- a new approach to opennes ', -the Department of Energy (DOE).and,its communications with the public.- I support of this initiative, we are pleased to forward the enclosed inforo related to the Ledoux and Co. site in your jurisdiction that performed wa for DOE's predecessor agencies. 'information, use, and

  4. February 26, 2014 in 100E Hildebrand Hall | Center for Gas

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

    SeparationsRelevant to Clean Energy Technologies | Blandine Jerome February 26, 2014 in 100E Hildebrand Hall Previous Next List Dawei Feng (Dept. of Chemistry, Texas A&M University) Alkylamine-Tethered Porous Polymer Networks for CO2 Capture Walter Drisdell (Materials Sciences Division, LBNL) Investigating CO2 Adsorption in an Amine-Appended Metal-Organic Framework using NEXAFS Spectroscopy

  5. Building America Top Innovations Hall of Fame Profile … Ducts in Conditioned Space

    Energy Savers [EERE]

    A duct chase in a dropped hallway ceiling provides an affordable way to put ducts in conditioned space, a technique that saves energy and improves indoor air quality. Moving ductwork into the home's conditioned space can save 8%-15% on homeowner air-conditioning bills. Thousands of homes are now applying this important best practice promoted by Building America research. BUILDING AMERICA TOP INNOVATIONS HALL OF FAME PROFILE INNOVATIONS CATEGORY: 1. Advanced Technologies and Practices 1.1

  6. Building America Top Innovations Hall of Fame Profile … Low-Cost Ventilation in Production Housing

    Energy Savers [EERE]

    simple, cost-effective techniques for providing fresh air throughout the home, including exhaust-only and central fan-integrated supply ventilation. Building America has refined simple whole-house ventilation systems that cost less than $350 to install. BUILDING AMERICA TOP INNOVATIONS HALL OF FAME PROFILE INNOVATIONS CATEGORY: 1. Advanced Technologies and Practices 1.3 Assured Health, Safety, and Durability Low-Cost Ventilation in Production Housing As high-performance homes get more air-tight

  7. Hyperspectral Remote Sensing Techniques For Locating Geothermal...

    Open Energy Info (EERE)

    Remote Sensing Techniques For Locating Geothermal Resources Jump to: navigation, search OpenEI Reference LibraryAdd to library Poster: Hyperspectral Remote Sensing Techniques For...

  8. RADIOLOGICAL EVALUATION OF DECONTAMINATION DEBRIS LOCATED AT...

    Office of Legacy Management (LM)

    DEBRIS LOCATED AT THE FUTURA CHEMICAL COMPANY FACILITY 9200 LATTY AVENUE ... Plan View of the Futura Chemical Company Property at 9200 Latty Avenue. . . . . . . . . . ...

  9. Sandia National Laboratories: Locations: Kauai Test Facility

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

    KTF provides the following location-enabled operations: Joint experiments with launches from Vandenberg Air Force Base or orbiting objects Experiments on phenomena occurring in the ...

  10. Uranium Lease Tracts Location Map | Department of Energy

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

    Uranium Lease Tracts Location Map Uranium Lease Tracts Location Map Uranium Lease Tracts Location Map PDF icon Uranium Lease Tracts Location Map More Documents & Publications ...

  11. Hall-effect-controlled gas dynamics in protoplanetary disks. I. Wind solutions at the inner disk

    SciTech Connect (OSTI)

    Bai, Xue-Ning

    2014-08-20

    The gas dynamics of protoplanetary disks (PPDs) is largely controlled by non-ideal magnetohydrodynamic (MHD) effects including Ohmic resistivity, the Hall effect, and ambipolar diffusion. Among these the role of the Hall effect is the least explored and most poorly understood. In this series, we have included, for the first time, all three non-ideal MHD effects in a self-consistent manner to investigate the role of the Hall effect on PPD gas dynamics using local shearing-box simulations. In this first paper, we focus on the inner region of PPDs, where previous studies (Bai and Stone 2013; Bai 2013) excluding the Hall effect have revealed that the inner disk up to ?10 AU is largely laminar, with accretion driven by a magnetocentrifugal wind. We confirm this basic picture and show that the Hall effect modifies the wind solutions depending on the polarity of the large-scale poloidal magnetic field B{sub 0} threading the disk. When B{sub 0}??>0, the horizontal magnetic field is strongly amplified toward the disk interior, leading to a stronger disk wind (by ?50% or less in terms of the wind-driven accretion rate). The enhanced horizontal field also leads to much stronger large-scale Maxwell stress (magnetic braking) that contributes to a considerable fraction of the wind-driven accretion rate. When B{sub 0}??<0, the horizontal magnetic field is reduced, leading to a weaker disk wind (by ? 20%) and negligible magnetic braking. Under fiducial parameters, we find that when B{sub 0}??>0, the laminar region extends farther to ?10-15 AU before the magnetorotational instability sets in, while for B{sub 0}??<0, the laminar region extends only to ?3-5 AU for a typical accretion rate of ?10{sup 8} to10{sup 7} M {sub ?} yr{sup 1}. Scaling relations for the wind properties, especially the wind-driven accretion rate, are provided for aligned and anti-aligned field geometries.

  12. Assessment of User Home Location Geoinference Methods

    SciTech Connect (OSTI)

    Harrison, Joshua J.; Bell, Eric B.; Corley, Courtney D.; Dowling, Chase P.; Cowell, Andrew J.

    2015-05-29

    This study presents an assessment of multiple approaches to determine the home and/or other important locations to a Twitter user. In this study, we present a unique approach to the problem of geotagged data sparsity in social media when performing geoinferencing tasks. Given the sparsity of explicitly geotagged Twitter data, the ability to perform accurate and reliable user geolocation from a limited number of geotagged posts has proven to be quite useful. In our survey, we have achieved accuracy rates of over 86% in matching Twitter user profile locations with their inferred home locations derived from geotagged posts.

  13. Method of locating underground mines fires

    DOE Patents [OSTI]

    Laage, Linneas; Pomroy, William

    1992-01-01

    An improved method of locating an underground mine fire by comparing the pattern of measured combustion product arrival times at detector locations with a real time computer-generated array of simulated patterns. A number of electronic fire detection devices are linked thru telemetry to a control station on the surface. The mine's ventilation is modeled on a digital computer using network analysis software. The time reguired to locate a fire consists of the time required to model the mines' ventilation, generate the arrival time array, scan the array, and to match measured arrival time patterns to the simulated patterns.

  14. Mobile Truck Stop Electrification Site Locator

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

    of the zip code area instead of the actual location. If you're having difficulty, please contact the technical response team at 800-254-6735. They will be able to assist you. TSE...

  15. Date Time Event Description/Participants Location

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

    Updated: 06112015 Date Time Event DescriptionParticipants Location Point of Contact 11 thru 12 All Day Meeting Todd Allen, deputy director of Science and Technology at INL, has...

  16. Sandia National Laboratories: Locations: Livermore, California: Visiting

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

    Sandia/California California Livermore, California administration building Our location and hours of operation Sandia/California is located at 7011 East Avenue in Livermore, Calif., a suburban community about 45 miles east of San Francisco. Positioned at the eastern edge of the San Francisco Bay Area, Sandia is within easy commuting distance of many affordable housing communities in San Joaquin County and the Central Valley. The official hours of operation at Sandia/California are from 7:30

  17. Field effect in the quantum Hall regime of a high mobility graphene wire

    SciTech Connect (OSTI)

    Barraud, C., E-mail: cbarraud@phys.ethz.ch, E-mail: clement.barraud@univ-paris-diderot.fr; Choi, T.; Ihn, T.; Ensslin, K. [Solid State Physics Laboratory, ETH Zrich, CH-8093 Zrich (Switzerland); Butti, P.; Shorubalko, I. [Swiss Federal Laboratories of Materials Science and Technologies, EMPA Elect. Metrol. Reliabil. Lab., CH-8600 Dbendorf (Switzerland); Taniguchi, T.; Watanabe, K. [National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan)

    2014-08-21

    In graphene-based electronic devices like in transistors, the field effect applied thanks to a gate electrode allows tuning the charge density in the graphene layer and passing continuously from the electron to the hole doped regime across the Dirac point. Homogeneous doping is crucial to understand electrical measurements and for the operation of future graphene-based electronic devices. However, recently theoretical and experimental studies highlighted the role of the electrostatic edge due to fringing electrostatic field lines at the graphene edges [P. Silvestrov and K. Efetov, Phys. Rev. B 77, 155436 (2008); F. T. Vasko and I. V. Zozoulenko, Appl. Phys. Lett. 97, 092115 (2010)]. This effect originates from the particular geometric design of the samples. A direct consequence is a charge accumulation at the graphene edges giving a value for the density, which deviates from the simple picture of a plate capacitor and also varies along the width of the graphene sample. Entering the quantum Hall regime would, in principle, allow probing this accumulation thanks to the extreme sensitivity of this quantum effect to charge density and the charge distribution. Moreover, the presence of an additional and counter-propagating edge channel has been predicted [P. Silvestrov and K. Efetov, Phys. Rev. B 77, 155436 (2008)] giving a fundamental aspect to this technological issue. In this article, we investigate this effect by tuning a high mobility graphene wire into the quantum Hall regime in which charge carriers probe the electrostatic potential at high magnetic field close to the edges. We observe a slight deviation to the linear shift of the quantum Hall plateaus with magnetic field and we study its evolution for different filling factors, which correspond to different probed regions in real space. We discuss the possible origins of this effect including an increase of the charge density towards the edges.

  18. Recent results and challenges in development of metallic Hall sensors for fusion reactors

    SciTech Connect (OSTI)

    ?uran, Ivan; Mulek, Radek; Kova?k, Karel; Sentkerestiov, Jana; Kohout, Michal

    2014-08-21

    Reliable and precise diagnostic of local magnetic field is crucial for successful operation of future thermonuclear fusion reactors based on magnetic confinement. Magnetic sensors at these devices will experience an extremely demanding operational environment with large radiation and thermal loads in combination with required long term, reliable, and service-free performance. Neither present day commercial nor laboratory measurement systems comply with these requirements. Metallic Hall sensors based on e.g. copper or bismuth could potentially satisfy these needs. We present the technology for manufacturing of such sensors and some initial results on characterization of their properties.

  19. AC-magnetotransport of a 2DEG in the quantum Hall regime

    SciTech Connect (OSTI)

    Hernndez, C.; Chaubet, C.

    2014-05-15

    In this paper we present an ac-magneto-transport study of a two-dimensional electron gas (2DEG) in the quantum Hall effect (QHE) regime, for frequencies in the range [100Hz, 1MHz]. We present a new approach to understand admittance measurements based in the Landauer-Buttiker formalism for QHE edge channels and taking into account the capacitance and the topology of the cables connected to the contacts used in the measurements. Our model predicts an universal behavior with the a-dimensional parameter RC? where R is the 2 wires resistance of the 2DEG, C the capacitance cables and the angular frequency, in agreement with experiments.

  20. The Honoradle':Rudolf Juiliani City'Hall New York, New York I0007

    Office of Legacy Management (LM)

    1 / .' Department oft Endrgy :. ' . ' . Wasthgton, DC 20585 ' ,,' . .' . . _ s ,' FEi,l 6 jg& ,. . . ' I s. i ,-' .' / ,, -. ,. The Honoradle':Rudolf Juiliani City'Hall New York, New York I0007 i ', 1" Dear MayorJuilianiz ,. : ", ,. Secretary'of,Energy,Hazel O'Leary has announced a new approach to openness'in the, Department of Energy (DOE)and its communications with the public-~ :'In support of this initiative,, we are pleased to .forward,the'enclpsed. information related.to the

  1. Upgraded photon calorimeter with integrating readout for Hall A Compton Polarimeter at Jefferson Lab

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

    Friend, M.; Parno, D.; Benmokhtar, F.; Camsonne, A.; Dalton, M. M.; Franklin, G. B.; Mamyan, V.; Michaels, R.; Nanda, S.; Nelyubin, V.; et al

    2012-06-01

    The photon arm of the Compton polarimeter in Hall A of Jefferson Lab has been upgraded to allow for electron beam polarization measurements with better than 1% accuracy. The data acquisition system (DAQ) now includes an integrating mode, which eliminates several systematic uncertainties inherent in the original counting-DAQ setup. The photon calorimeter has been replaced with a Ce-doped Gd2SiO5 crystal, which has a bright output and fast response, and works well for measurements using the new integrating method at electron beam energies from 1 to 6 GeV.

  2. Quantum Hall effect in HgTe quantum wells at nitrogen temperatures

    SciTech Connect (OSTI)

    Kozlov, D. A. Kvon, Z. D.; Mikhailov, N. N.; Dvoretskii, S. A.; Weishupl, S.; Krupko, Y.; Portal, J.-C.

    2014-09-29

    We report on the observation of quantized Hall plateaus in a system of two-dimensional Dirac fermions, implemented in a 6.6?nm HgTe quantum well at magnetic fields up to 34?T at nitrogen temperatures. The activation energies determined from the temperature dependence of the longitudinal resistivity are found to be almost equal for the filling factors ? of 1 and 2. This indicates that the large values of the g-factor (about 3040) remain unchanged at very strong magnetic fields.

  3. Gracie Hall

    Broader source: Energy.gov [DOE]

    Gracie is a student representative to the board for FY 2013-14. She is a senior at Oak Ridge High School, where she is a member of the National Honor Society, the Oak Ridge High School marching and...

  4. Utility Locating in the DOE Environment

    SciTech Connect (OSTI)

    Clark Scott; Gail Heath

    2006-04-01

    Some advances have been made in utility locating in recent years and standards have been recently published to try and categorize the level of information known about the utility in the subsurface. At the same time some characterization about the level of effort or technology in the geophysicist approach to utility locating may be generalized. The DOE environment poses some added difficulties and this presentation covers these issues, costs and the technical approach that has been developed at the INEEL to prevent utility hits and how it fits into the generalized classification of effort.

  5. Spin Hall magnetoresistance in CoFe2O4/Pt films

    SciTech Connect (OSTI)

    Wu, Hao; Qintong, Zhang; Caihua, Wan; Ali, Syed Shahbaz; Yuan, Zhonghui; You, Lu; Wang, Junling; Choi, Yongseong; Han, Xiufeng

    2015-05-13

    Pulse laser deposition and magnetron sputtering techniques have been employed to prepare MgO(001)//CoFe2O4/Pt samples. Cross section transmission electron microscope results prove that the CoFe2O4 film epitaxially grew along (001) direction. X-ray magnetic circular dichroism results show that magnetic proximity effect in this sample is negligible. Magnetoresistance (MR) properties confirm that spin Hall MR (SMR) dominates in this system. Spin Hall effect-induced anomalous Hall voltage was also observed in this sample. Lastly, these results not only demonstrate the universality of SMR effect but also demonstrate the utility in spintronics of CoFe2O4 as a new type of magnetic insulator.

  6. Energy Efficiency Improvements to Wundar Hall, a Historic Building on the Concordia Campus, Milwaukee, Wisconsin

    SciTech Connect (OSTI)

    Karman, Nathan

    2012-11-29

    The Forest County Potawatomi Community (??FCPC? or ??Community?) implemented energy efficiency improvements to revitalize Wundar Hall, a 34,000 square foot (??SF?) building that was formerly used as a dormitory and is listed on the National Registry of Historic Places, into an office building. Wundar Hall is the first of many architecturally and historically significant buildings that the Community hopes to renovate at the former Concordia College campus, property on the near west side of Milwaukee that was taken into trust for the Community by the United States on July 10, 1990 (collectively, the ??Concordia Trust Property?). As part of this project, which was conducted with assistance from the Department of Energy??s Tribal Energy Program (??TEP?), the Community updated and/or replaced the building envelope, mechanical systems, the plumbing system, the electrical infrastructure, and building control systems. The project is expected to reduce the building??s natural gas consumption by 58% and the electricity consumption by 55%. In addition, the project was designed to act as a catalyst to further renovation of the Concordia Trust Property and the neighborhood. The City of Milwaukee has identified redevelopment of the Concordia Trust Property as a ??Catalytic Project? for revitalizing the near west side. The Tribe envisions a revitalized, mixed-use campus of community services, education, and economic development??providing services to the Indian community and jobs to the neighborhood.

  7. Beta (β) tungsten thin films: Structure, electron transport, and giant spin Hall effect

    SciTech Connect (OSTI)

    Hao, Qiang; Chen, Wenzhe; Xiao, Gang

    2015-05-04

    We use a simple magnetron sputtering process to fabricate beta (β) tungsten thin films, which are capable of generating giant spin Hall effect. As-deposited thin films are always in the metastable β-W phase from 3.0 to 26.7 nm. The β-W phase remains intact below a critical thickness of 22.1 nm even after magnetic thermal annealing at 280 °C, which is required to induce perpendicular magnetic anisotropy (PMA) in a layered structure of β-W/Co{sub 40}Fe{sub 40}B{sub 20}/MgO. Intensive annealing transforms the thicker films (>22.1 nm) into the stable α-W phase. We analyze the structure and grain size of both β- and α-W thin films. Electron transport in terms of resistivity and normal Hall effect is studied over a broad temperature range of 10 K to at least 300 K on all samples. Very low switching current densities are achieved in β-W/Co{sub 40}Fe{sub 40}B{sub 20}/MgO with PMA. These basic properties reveal useful behaviors in β-W thin films, making them technologically promising for spintronic magnetic random access memories and spin-logic devices.

  8. Source and Extraction for Simultaneous Four-hall Beam Delivery System at CEBAF

    SciTech Connect (OSTI)

    Kazimi, Reza; Wang, Haipeng; Spata, Mike F.; Hansknecht, John C.

    2013-06-01

    A new design for simultaneous delivery of the electron beam to all four 12 GeV CEBAF experimental halls* requires a new 750 MHz RF separator system in the 5th pass extraction region, a 250 MHz repetition rate for its beams, and addition of a fourth laser at the photo-cathode gun. The proposed system works in tandem with the existing 500 MHz RF separators and beam repetition rate on the lower passes. The new 5th pass RF separators will have the same basic design but modified to run at 750 MHz. The change to the beam repetition rate will be at the photo-cathode gun through an innovative upgrade of the seed laser driver system using electro-optic modulators. The new laser system also allows addition of the fourth laser. The new RF separators, the new laser system and other hardware changes required to implement the Four-Hall operation delivery system will be discussed in this paper.

  9. Temperature-driven band inversion in Pb?.??Sn?.??Se: Optical and Hall-effect studies

    SciTech Connect (OSTI)

    Anand, Naween; Gu, Genda; Buvaev, Sanal; Hebard, A. F.; Tanner, D. B.; Chen, Zhiguo; Li, Zhiqiang; Choudhary, Kamal; Sinnott, S. B.; Martin, C.

    2014-12-23

    Optical and Hall-effect measurements have been performed on single crystals of Pb?.??Sn?.??Se, a IV-VI mixed chalcogenide. The temperature dependent (10300 K) reflectance was measured over 407000 cm? (5870 meV) with an extension to 15,500 cm? (1.92 eV) at room temperature. The reflectance was fit to the Drude-Lorentz model using a single Drude component and several Lorentz oscillators. The optical properties at the measured temperatures were estimated via Kramers-Kronig analysis as well as by the Drude-Lorentz fit. The carriers were p-type with the carrier density determined by Hall measurements. A signature of valence intraband transition is found in the low-energy optical spectra. It is found that the valence-conduction band transition energy as well as the free carrier effective mass reach minimum values at 100 K, suggesting temperature-driven band inversion in the material. Density function theory calculation for the electronic band structure also make similar predictions.

  10. Temperature-driven band inversion in Pb?.??Sn?.??Se: Optical and Hall-effect studies

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

    Anand, Naween; Gu, Genda; Buvaev, Sanal; Hebard, A. F.; Tanner, D. B.; Chen, Zhiguo; Li, Zhiqiang; Choudhary, Kamal; Sinnott, S. B.; Martin, C.

    2014-12-23

    Optical and Hall-effect measurements have been performed on single crystals of Pb?.??Sn?.??Se, a IV-VI mixed chalcogenide. The temperature dependent (10300 K) reflectance was measured over 407000 cm? (5870 meV) with an extension to 15,500 cm? (1.92 eV) at room temperature. The reflectance was fit to the Drude-Lorentz model using a single Drude component and several Lorentz oscillators. The optical properties at the measured temperatures were estimated via Kramers-Kronig analysis as well as by the Drude-Lorentz fit. The carriers were p-type with the carrier density determined by Hall measurements. A signature of valence intraband transition is found in the low-energy opticalmorespectra. It is found that the valence-conduction band transition energy as well as the free carrier effective mass reach minimum values at 100 K, suggesting temperature-driven band inversion in the material. Density function theory calculation for the electronic band structure also make similar predictions.less

  11. Resonant cavity mode dependence of anomalous and inverse spin Hall effect

    SciTech Connect (OSTI)

    Kim, Sang-Il; Seo, Min-Su; Park, Seung-young

    2014-05-07

    The direct current electric voltage induced by the Inverse Spin Hall Effect (ISHE) and Anomalous Hall Effect (AHE) was investigated in the TE{sub 011} and TE{sub 102} cavities. The ISHE and AHE components were distinguishable through the fitting of the voltage spectrum. The unwanted AHE was minimized by placing the DUT (Device Under Test) at the center of both the TE{sub 011} and TE{sub 102} cavities. The voltage of ISHE in the TE{sub 011} cavity was larger than that in the TE{sub 102} cavity due to the higher quality factor of the former. Despite optimized centering, AHE voltage from TE{sub 011} cavity was also higher. The reason was attributed to the E-field distribution inside the cavity. In the case of the TE{sub 011} cavity, the DUT was easily exposed to the E-field in all directions. Therefore, the parasitic AHE voltage in the TE{sub 102} cavity was less sensitive than that in the TE{sub 011} cavity to decentering problem.

  12. Structure of intermediate shocks in collisionless anisotropic Hall-magnetohydrodynamics plasma models

    SciTech Connect (OSTI)

    Snchez-Arriaga, G.

    2013-10-15

    The existence of discontinuities within the double-adiabatic Hall-magnetohydrodynamics (MHD) model is discussed. These solutions are transitional layers where some of the plasma properties change from one equilibrium state to another. Under the assumption of traveling wave solutions with velocity C and propagation angle ? with respect to the ambient magnetic field, the Hall-MHD model reduces to a dynamical system and the waves are heteroclinic orbits joining two different fixed points. The analysis of the fixed points rules out the existence of rotational discontinuities. Simple considerations about the Hamiltonian nature of the system show that, unlike dissipative models, the intermediate shock waves are organized in branches in parameter space, i.e., they occur if a given relationship between ? and C is satisfied. Electron-polarized (ion-polarized) shock waves exhibit, in addition to a reversal of the magnetic field component tangential to the shock front, a maximum (minimum) of the magnetic field amplitude. The jumps of the magnetic field and the relative specific volume between the downstream and the upstream states as a function of the plasma properties are presented. The organization in parameter space of localized structures including in the model the influence of finite Larmor radius is discussed.

  13. PIA - General Locator Information & Non-Employee System (GLI...

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

    General Locator Information & Non-Employee System (GLI-NES) PIA - General Locator Information & Non-Employee System (GLI-NES) PIA - General Locator Information & Non-Employee...

  14. Research Site Locations for Current and Former EERE Postdoctoral...

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

    Research Site Locations for Current and Former EERE Postdoctoral Awards Research Site Locations for Current and Former EERE Postdoctoral Awards Research Site Locations for Current ...

  15. Smart Grid Demonstration Project Locations | Department of Energy

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

    Demonstration Project Locations Smart Grid Demonstration Project Locations Map of the United States showing the location of Smart Grid Demonstration projects created with funding ...

  16. Major DOE Biofuels Project Locations | Department of Energy

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

    PDF icon Major DOE Biofuels Project Locations More Documents & Publications Major DOE Biofuels Project Locations Major DOE Biofuels Project Locations Algal Biofuel Technologies

  17. TWRS information locator database system design description

    SciTech Connect (OSTI)

    Knutson, B.J.

    1996-09-13

    This document gives an overview and description of the Tank Waste Remediation System (TWRS) Information Locator Database (ILD)system design. The TWRS ILD system is an inventory of information used in the TWRS Systems Engineering process to represent the TWRS Technical Baseline. The inventory is maintained in the form of a relational database developed in Paradox 4.5.

  18. Tune In To Our Online Town Hall With Sec. Chu at 12:45PM EST | Department

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

    of Energy Tune In To Our Online Town Hall With Sec. Chu at 12:45PM EST Tune In To Our Online Town Hall With Sec. Chu at 12:45PM EST January 26, 2011 - 8:35am Addthis Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs During the State of the Union address last night, President Obama placed the national spotlight on clean energy, saying that "we need to out-innovate, out-educate, and out-build the rest of the world," and that we must invest in

  19. Comparison of two data acquisition and processing systems of Moller polarimeter in Hall A of Jefferson Lab

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

    Vereshchaka, Vadym V.; Glamazdin, Oleksandr V.; Pomatsalyuk, Roman I.

    2014-07-01

    Two data acquisition and processing systems are used simultaneously to measure electron beam polarization by Moller polarimeter in Hall A of Jefferson Lab (Newport News, VA, USA). The old system (since 1997) is fully functional, but is not repairable in case of malfunction (system modules arenot manufactured anymore). The new system (since 2010) based on flash-ADC is more accurate, but currently requires more detailed adjustment and further improvement. Description and specifications of two data acquisition and processing systems have been given. The results of polarization measurements during experiments conducted in Hall A from 2010 to 2012 are compared.

  20. Comparison of two data acquisition and processing systems of Moller polarimeter in Hall A of Jefferson Lab

    SciTech Connect (OSTI)

    Vereshchaka, Vadym V.; Glamazdin, Oleksandr V.; Pomatsalyuk, Roman I.

    2014-07-01

    Two data acquisition and processing systems are used simultaneously to measure electron beam polarization by Moller polarimeter in Hall A of Jefferson Lab (Newport News, VA, USA). The old system (since 1997) is fully functional, but is not repairable in case of malfunction (system modules arenot manufactured anymore). The new system (since 2010) based on flash-ADC is more accurate, but currently requires more detailed adjustment and further improvement. Description and specifications of two data acquisition and processing systems have been given. The results of polarization measurements during experiments conducted in Hall A from 2010 to 2012 are compared.

  1. Leak locating microphone, method and system for locating fluid leaks in pipes

    DOE Patents [OSTI]

    Kupperman, David S.; Spevak, Lev

    1994-01-01

    A leak detecting microphone inserted directly into fluid within a pipe includes a housing having a first end being inserted within the pipe and a second opposed end extending outside the pipe. A diaphragm is mounted within the first housing end and an acoustic transducer is coupled to the diaphragm for converting acoustical signals to electrical signals. A plurality of apertures are provided in the housing first end, the apertures located both above and below the diaphragm, whereby to equalize fluid pressure on either side of the diaphragm. A leak locating system and method are provided for locating fluid leaks within a pipe. A first microphone is installed within fluid in the pipe at a first selected location and sound is detected at the first location. A second microphone is installed within fluid in the pipe at a second selected location and sound is detected at the second location. A cross-correlation is identified between the detected sound at the first and second locations for identifying a leak location.

  2. VCSEL fault location apparatus and method

    DOE Patents [OSTI]

    Keeler, Gordon A.; Serkland, Darwin K.

    2007-05-15

    An apparatus for locating a fault within an optical fiber is disclosed. The apparatus, which can be formed as a part of a fiber-optic transmitter or as a stand-alone instrument, utilizes a vertical-cavity surface-emitting laser (VCSEL) to generate a test pulse of light which is coupled into an optical fiber under test. The VCSEL is subsequently reconfigured by changing a bias voltage thereto and is used as a resonant-cavity photodetector (RCPD) to detect a portion of the test light pulse which is reflected or scattered from any fault within the optical fiber. A time interval .DELTA.t between an instant in time when the test light pulse is generated and the time the reflected or scattered portion is detected can then be used to determine the location of the fault within the optical fiber.

  3. google-map-of-argonne-location

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

    goals NNSA Releases 2015 Enterprise Strategic Vision Today, we are pleased to announce the publication of the 2015 DOE/NNSA Enterprise Strategic Vision. This document aligns with the Department of Energy Strategic Plan for 2014-2018 and provides a framework for integrating our missions and direction for pursuing DOE's strategic goals. The...

    Google Map of Argonne Location Map of Building 222 (TRACC)- Green Arrow TRACC RESEARCH Computational Fluid Dynamics Computational Structural Mechanics

  4. Detrecting and Locating Partial Discharges in Transformers

    SciTech Connect (OSTI)

    Shourbaji, A.; Richards, R.; Kisner, R. A.; Hardy, J.

    2005-02-04

    A collaborative research between the Oak Ridge National Laboratory (ORNL), the American Electric Power (AEP), the Tennessee Valley Authority (TVA), and the State of Ohio Energy Office (OEO) has been formed to conduct a feasibility study to detect and locate partial discharges (PDs) inside large transformers. The success of early detection of the PDs is necessary to avoid costly catastrophic failures that can occur if the process of PD is ignored. The detection method under this research is based on an innovative technology developed by ORNL researchers using optical methods to sense the acoustical energy produced by the PDs. ORNL researchers conducted experimental studies to detect PD using an optical fiber as an acoustic sensor capable of detecting acoustical disturbances at any point along its length. This technical approach also has the potential to locate the point at which the PD was sensed within the transformer. Several optical approaches were experimentally investigated, including interferometric detection of acoustical disturbances along the sensing fiber, light detection and ranging (LIDAR) techniques using frequency modulation continuous wave (FMCW), frequency modulated (FM) laser with a multimode fiber, FM laser with a single mode fiber, and amplitude modulated (AM) laser with a multimode fiber. The implementation of the optical fiber-based acoustic measurement technique would include installing a fiber inside a transformer allowing real-time detection of PDs and determining their locations. The fibers are nonconductive and very small (core plus cladding are diameters of 125 μm for single-mode fibers and 230 μm for multimode fibers). The research identified the capabilities and limitations of using optical technology to detect and locate sources of acoustical disturbances such as in PDs in large transformers. Amplitude modulation techniques showed the most promising results and deserve further research to better quantify the technique’s sensitivity and its ability to characterize a PD event. Other sensing techniques have been also identified, such as the wavelength shifting fiber optics and custom fabricated fibers with special coatings.

  5. Our Locations | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Locations The NNSA's nuclear security enterprise spans eight sites, including three national laboratories, with more than six decades of cutting-edge nuclear security experience. That history and technical expertise enables NNSA to accomplish its work across its four mission areas. The NNSA's nuclear security enterprise spans eight sites, including three national laboratories, with more than six decades of cutting-edge nuclear security experience. That history and technical expertise enables

  6. Exploration of deeply virtual Compton scattering on the neutron in the Hall A of Jefferson Laboratory

    SciTech Connect (OSTI)

    Malek Mazouz

    2006-12-08

    Generalized Parton Distributions (GPDs) are universal functions which provide a comprehensive description of hadron properties in terms of quarks and gluons. Deeply Virtual Compton Scattering (DVCS) is the simplest hard exclusive process involving GPDs. In particular, the DVCS on the neutron is mostly sensitive to E, the less constrained GPD, wich allows to access to the quark angular momentum. The first dedicated DVCS experiment on the neutron ran in the Hall A of Jefferson Lab in fall 2004. The high luminosity of the experiment and the resulting background rate recquired specific devices which are decribed in this document. The analysis methods and the experiment results, leading to preliminary constraints on the GPD E, are presented.

  7. Robustness of fractional quantum Hall states with dipolar atoms in artificial gauge fields

    SciTech Connect (OSTI)

    Grass, T.; Baranov, M. A.; Lewenstein, M.

    2011-10-15

    The robustness of fractional quantum Hall states is measured as the energy gap separating the Laughlin ground state from excitations. Using thermodynamic approximations for the correlation functions of the Laughlin state and the quasihole state, we evaluate the gap in a two-dimensional system of dipolar atoms exposed to an artificial gauge field. For Abelian fields, our results agree well with the results of exact diagonalization for small systems but indicate that the large value of the gap predicted [Phys. Rev. Lett. 94, 070404 (2005)] was overestimated. However, we are able to show that the small gap found in the Abelian scenario dramatically increases if we turn to non-Abelian fields squeezing the Landau levels.

  8. EX/P5-4 Two-Fluid Hall Effect on Plasma Relaxation

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

    EX/P5-4 Two-Fluid Hall Effect on Plasma Relaxation in a High-Temperature Plasma W.X. Ding 1,3), V. Mirnov 2,3), A. F. Almagri 2,3), D.L. Brower 1,3), D. Craig 2,3), B.H. Deng 1,3), D. J. Den Hartog 2,3) , G. Fiksel 2,3), C.C. Hegna 2,3), S.C. Prager 2,3), J.S. Sarff 2,3) 1) University of California, Los Angeles, California 90095 USA 2) University of Wisconsin-Madison, Madison, Wisconsin 53706 USA 3) The Center for Magnetic Self-Organization in Laboratory and Astrophysical Plasmas e-mail contact

  9. Optimized electrode placement along the channel of a Hall thruster for ion focusing

    SciTech Connect (OSTI)

    Qing, Shaowei, E-mail: qshaowei@gmail.com [Power Engineering Institute, Chongqing University, Chongqing 400044 (China); E, Peng [Department of Electrical Engineering, Harbin Institute of Technology, Harbin 150001 (China); Xia, Guangqing [State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024 (China); Tang, Ming-Chun [College of Communication Engineering, Chongqing University, Chongqing 400044 (China); Duan, Ping [School of Physics, Dalian Maritime University, Dalian 116026 (China)

    2014-01-21

    An optimal placement of the segmented electrode for increasing the lifetime of the Aton-type Hall thruster, i.e., reducing the plume divergence, is demonstrated using a 2D3V fully kinetic Particle-in-Cell method. Segmented electrodes, embedded near the ionization region of non-segmented case and biased above anode potential, lead to an increased separation between the ionization and acceleration regions and the formation of an efficient acceleration electric field configuration as potential lens. Due to this electrode placement, the sheath near the ceramic walls of the acceleration region is collapsed and an excellent ion beam focusing is demonstrated. The potential contour pockets around the electrodes and the sheath collapse phenomenon are also discussed.

  10. Commissioning and Testing the 1970's Era LASS Solenoid Magnet in JLab's Hall D

    SciTech Connect (OSTI)

    Ballard, Joshua T.; Biallas, George H.; Brown, G.; Butler, David E.; Carstens, Thomas J.; Chudakov, Eugene A.; Creel, Jonathan D.; Egiyan, Hovanes; Martin, F.; Qiang, Yi; Smith, Elton S.; Stevens, Mark A.; Spiegel, Scot L.; Whitlatch, Timothy E.; Wolin, Elliott J.; Ghoshal, Probir K.

    2015-06-01

    JLab refurbished and reconfigured the LASS1, 1.85m bore Solenoid and installed it as the principal analysis magnet for nuclear physics in the newly constructed, Hall D at Jefferson Lab. The magnet contains four superconducting coils within an iron yoke. The magnet was built in the early1970's at Stanford Linear Accelerator Center and used a second time at Los Alamos National Laboratory. The coils were extensively refurbished and individually tested by JLab. A new Cryogenic Distribution Box provides cryogens and their control valving, current distribution bus, and instrumentation pass-through. A repurposed CTI 2800 refrigerator system and new transfer line complete the system. We describe the re-configuration, the process and problems of re-commissioning the magnet and the results of testing the completed magnet.

  11. Record surface state mobility and quantum Hall effect in topological insulator thin films via interface engineering

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

    Koirala, Nikesh; Han, Myung -Geun; Brahlek, Matthew; Salehi, Maryam; Wu, Liang; Dai, Jixia; Waugh, Justin; Nummy, Thomas; Moon, Jisoo; Zhu, Yimei; et al

    2015-11-19

    Material defects remain as the main bottleneck to the progress of topological insulators (TIs). In particular, efforts to achieve thin TI samples with dominant surface transport have always led to increased defects and degraded mobilities, thus making it difficult to probe the quantum regime of the topological surface states. Here, by utilizing a novel buffer layer scheme composed of an In2Se3/(Bi0.5In0.5)2Se3 heterostructure, we introduce a quantum generation of Bi2Se3 films with an order of magnitude enhanced mobilities than before. Furthermore, this scheme has led to the first observation of the quantum Hall effect in Bi2Se3.

  12. Position-Momentum Duality and Fractional Quantum Hall Effect in Chern Insulators

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

    Claassen, Martin; Lee, Ching-Hua; Thomale, Ronny; Qi, Xiao-Liang; Devereaux, Thomas P

    2015-06-11

    We develop a first quantization description of fractional Chern insulators that is the dual of the conventional fractional quantum Hall (FQH) problem, with the roles of position and momentum interchanged. In this picture, FQH states are described by anisotropic FQH liquids forming in momentum-space Landau levels in a fluctuating magnetic field. The fundamental quantum geometry of the problem emerges from the interplay of single-body and interaction metrics, both of which act as momentum-space duals of the geometrical picture of the anisotropic FQH effect. We then present a novel broad class of ideal Chern insulator lattice models that act as dualsmore » of the isotropic FQH effect. The interacting problem is well-captured by Haldane pseudopotentials and affords a detailed microscopic understanding of the interplay of interactions and non-trivial quantum geometry.« less

  13. D0 Silicon Upgrade: D-Zero Assembly Hall ODH Analysis

    SciTech Connect (OSTI)

    Rucinski, Russ; /Fermilab

    1997-03-12

    The ODH analysis presented here covers the high bay and assembly hall docking area of the for the D-Zero detector. It includes the STand Alone helium Refrigerator (STAR) in the building. It also includes the D-Zero detector and it's associated cryogenic and gas systems. An ODH analysis is presented which shows that the D-Zero assembly building high bay including the detector docking area is ODH class O. Probabilities, leak rates, and fatality factors are generated for all items that are sources of inert gas. The scope of analysis included the calorimeter and gas components on the detector, the helium refrigerator/liquifier components, and the future solenoid and visible light photon counter cryogenics that will be added to the D-Zero detector. The analysis demonstrates that the calorimeter and helium refrigerator systems pose no ODH hazard to personnel.

  14. Extrinsic anomalous Hall effect in epitaxial Mn{sub 4}N films

    SciTech Connect (OSTI)

    Meng, M.; Wu, S. X. Ren, L. Z.; Zhou, W. Q.; Wang, Y. J.; Wang, G. L.; Li, S. W.

    2015-01-19

    Anomalous Hall effect (AHE) in ferrimagnetic Mn{sub 4}N epitaxial films grown by molecular-beam epitaxy is investigated. The longitudinal conductivity σ{sub xx} is within the superclean regime, indicating Mn{sub 4}N is a highly conducting material. We further demonstrate that the AHE signal in 40-nm-thick films is mainly due to the extrinsic contributions based on the analysis fitted by ρ{sub AH}=a′ρ{sub xx0}+bρ{sub xx}{sup 2} and σ{sub AH}∝σ{sub xx}. Our study not only provide a strategy for further theoretical work on antiperovskite manganese nitrides but also shed promising light on utilizing their extrinsic AHE to fabricate spintronic devices.

  15. Hall magnetohydrodynamics simulations of end-shorting induced rotation in field-reversed configurations

    SciTech Connect (OSTI)

    Macnab, A. I. D.; Milroy, R. D.; Kim, C. C.; Sovinec, C. R.

    2007-09-15

    End-shorting of the open field lines that surround a field-reversed configuration (FRC) is believed to contribute to its observed rotation. In this study, nonlinear extended magnetohydrodynamics (MHD) simulations were performed that detail the end-shorting process and the resulting spin-up of the FRC. The tangential component of the electric field E{sub T} is set to zero at the axial boundaries in an extended MHD model that includes the Hall and {nabla}P{sub e} terms. This shorting of the electric field leads to the generation of toroidal fields on the open field lines, which apply a torque leading to a rotation of the ions on the open field lines. The FRC then gains angular momentum through a viscous transfer from the open field line region. In addition, it is shown that spin-up is still induced when insulating boundaries are assumed.

  16. Diffusion Compton profondement virtuelle dans le Hall A au Jefferson Laboratory

    SciTech Connect (OSTI)

    Carlos Munoz Camacho

    2005-12-01

    Generalized Parton Distributions (GPDs), introduced in the late 90s, provide a universal description of hadrons in terms of the underlying degrees of freedom of Quantum Chromodynamics: quarks and gluons. GPDs appear in a wide variety of hard exclusive reactions and the advent of high luminosity accelerator facilities has made the study of GPDs accessible to experiment. Deeply Virtual Compton Scattering (DVCS) is the golden process involving GPDs. The first dedicated DVCS experiment ran in the Hall A of Jefferson Lab in Fall 2004. An electromagnetic calorimeter and a plastic scintillator detector were constructed for this experiment, together with specific electronics and acquisition system. The experiment preparation, data taking and analysis are described in this document. Results on the absolute cross section difference for opposite beam helicities provide the first measurement of a linear combination of GPDs as a function of the momentum transfer to the nucleon.

  17. Systems and methods for cylindrical hall thrusters with independently controllable ionization and acceleration stages

    DOE Patents [OSTI]

    Diamant, Kevin David; Raitses, Yevgeny; Fisch, Nathaniel Joseph

    2014-05-13

    Systems and methods may be provided for cylindrical Hall thrusters with independently controllable ionization and acceleration stages. The systems and methods may include a cylindrical channel having a center axial direction, a gas inlet for directing ionizable gas to an ionization section of the cylindrical channel, an ionization device that ionizes at least a portion of the ionizable gas within the ionization section to generate ionized gas, and an acceleration device distinct from the ionization device. The acceleration device may provide an axial electric field for an acceleration section of the cylindrical channel to accelerate the ionized gas through the acceleration section, where the axial electric field has an axial direction in relation to the center axial direction. The ionization section and the acceleration section of the cylindrical channel may be substantially non-overlapping.

  18. Non Invasive estimation of aluminum concentration in Hall-Heroult reduction cells

    SciTech Connect (OSTI)

    David Bell

    2004-03-01

    The present best practice for the preparation of primary aluminum is by electrolysis of alumina in the traditional Hall-Heroult reduction cell. The process conditions in the electrolyte of this cell required for the reduction to proceed are sufficiently harsh to have precluded the implementation of in situ sensing of the electrolyte composition, specifically the concentration of the ionized alumina. This report reveals the theoretical basis for a non-invasive method for estimation of the ionized alumina concentration which does not require the use of any sensor in direct contact with the cell electrolyte. The proposed method can in principle be applied with equal efficacy to the so-called drained cathode cell designs and to cells having any anode composition, because only knowledge of the electrolyte conduction behavior is required a priori. For an operating cell, the proposed method requires only readily available electrical measurements and the facilities to process the acquired signals. The proposed method rests on the ability to identify certain characteristics of the transients in the reduction cell terminal voltages caused by the quasiperiodic introduction of alumina. It will be shown that these voltage transients manifest measurable properties, in a statistical sense, that should permit estimation of the ionized alumina concentration with a delay of one alumina feed cycle. The next logical step following the present work, consistent with the Aluminum Technology Roadmap [1], is to experimentally verify the predictions made here; no doubt practical refinements to the proposed approach will evolve during the course of experimentation. Successful verification of the proposed estimation method will permit the design of reduction cell control algorithms based directly on the mass balance of alumina in the electrolyte. This report assumes that the reader understands certain basic concepts important to the operation of electrolytic cells, and the Hall-Heroult cell in particular. References [2,3] provide such concepts in a manner accessible to the technically educated reader; reference [6] is a more thorough treatment.

  19. Thickness measurement locations of mechanical integrity

    SciTech Connect (OSTI)

    Decker, J.R.; Rivas, N.

    1996-07-01

    This paper will describe the importance of establishing thickness measurement location (TNE) criteria. It will also seek to quantify the frequency of inspections and review the methods for establishing techniques to ensure reliability and repeatability of inspections at TMLs using qualified inspectors. Also discussed will be the most useful way to document the results of an inspection and how to effectively maintain consistency in the mechanical integrity program. It reviews different methods of inspection and uses lessons learned from in-service experience with numerous mechanical projects in the petrochemical industry. The importance of qualified inspectors, quality inspection, electronic data acquisition and electronic data storage will be discussed.

  20. Algae Biofuels Co-Location Assessment Tool

    Energy Science and Technology Software Center (OSTI)

    2013-09-18

    ABCLAT was built to help any model user with spatially explicit Nitrogen, Phosphorous, and Carbon Dioxide nutrient flux information, and solar resource information evaluate algal cultivation potential. Initial applications of this modeling framework include Algae Biofuels Co-Location Assessment Tool Canada and Australia. The Canadian application was copyrighted November 29th 2011 as the Algae Biofuels Co-Location Assessment Tool for Canada. This copyright assertion is for the general framework from which any country or region with themore » requisite data could create a regionally specific application. The ABCLAT model framework developed by SNL looks at the growth potential in a given region as a function of available nutrients from wastewater and other sources, carbon dioxide from power plants, available solar potential, and if available, land cover and use information. The model framework evaluates the biomass potential, fixed carbon dioxide, potential algal biocrude and required land area for nutrient sources. ABCLAT is built with an object-oriented software program that can provide an easy to use interface for exploring questions related to aigal biomass production.« less

  1. Analysis of the spin Hall effect in CuIr alloys: Combined approach of density functional theory and Hartree-Fock approximation

    SciTech Connect (OSTI)

    Xu, Zhuo Gu, Bo; Mori, Michiyasu; Maekawa, Sadamichi; Ziman, Timothy

    2015-05-07

    We analyze the spin Hall effect in CuIr alloys in theory by the combined approach of the density functional theory (DFT) and Hartree-Fock (HF) approximation. The spin Hall angle (SHA) is obtained to be negative without the local correlation effects. After including the local correlation effects of the 5d orbitals of Ir impurities, the SHA becomes positive with realistic correlation parameters and consistent with experiment [Niimi et al., Phys. Rev. Lett. 106, 126601 (2011)]. Moreover, our analysis shows that the DFT?+?HF approach is a convenient and general method to study the influence of local correlation effects on the spin Hall effect.

  2. Locating hardware faults in a parallel computer

    DOE Patents [OSTI]

    Archer, Charles J.; Megerian, Mark G.; Ratterman, Joseph D.; Smith, Brian E.

    2010-04-13

    Locating hardware faults in a parallel computer, including defining within a tree network of the parallel computer two or more sets of non-overlapping test levels of compute nodes of the network that together include all the data communications links of the network, each non-overlapping test level comprising two or more adjacent tiers of the tree; defining test cells within each non-overlapping test level, each test cell comprising a subtree of the tree including a subtree root compute node and all descendant compute nodes of the subtree root compute node within a non-overlapping test level; performing, separately on each set of non-overlapping test levels, an uplink test on all test cells in a set of non-overlapping test levels; and performing, separately from the uplink tests and separately on each set of non-overlapping test levels, a downlink test on all test cells in a set of non-overlapping test levels.

  3. Location Independent Professional Project: A Pilot Study

    SciTech Connect (OSTI)

    Hudson, J.A.; Long, J.P.; Miller, M.M.

    1999-02-01

    This pilot study project explored the problem of providing access to the nomadic worker who desires to connect a computer through network access points at a number of different locations within the SNL/NM campus as well as outside the campus. The design and prototype development gathered knowledge that may allow a design to be developed that could be extended to a larger number of SNL/NM network drop boxes. The focus was to provide a capability for a worker to access the SNL IRN from a network drop box (e.g. in a conference room) as easily as when accessing the computer network from the office normally used by the worker. Additional study was done on new methods to authenticate the off campus worker, and protect and control access to data.

  4. Location performance objectives for the NNWSI area-to-location screening activity

    SciTech Connect (OSTI)

    Sinnock, S.; Fernandez, J.A.

    1984-01-01

    Fifty-four objectives were identified to guide the screening of the Nevada Research and Development Area of the Nevada Test Site for relatively favorable locations for the disposal of nuclear waste in a mined geologic repository. The objectives were organized as a hierarchy composed of 4 upper-level, 12 middle-level, and 38 lower-level objectives. The four upper-level objectives account for broad national goals to contain and isolate nuclear waste in an environmentally sound and economically acceptable manner. The middle-level objectives correspond to topical categories that logically relate the upper-level objectives to site-specific concerns such as seismicity, sensitive species, and flooding hazards (represented by the lower-level objectives). The relative merits of alternative locations were compared by an application of decision analysis based on standard utility theory. The relative favorabilities of pertinent physical conditions at each alternative location were weighted in relation to the importance of objectives, and summed to produce maps indicating the most and the least favorable locations. Descriptions of the objectives were organized by the hierarchical format; they detail the applicability of each objective to geologic repository siting, previously published siting criteria corresponding to each objective, and the rationale for the weight assigned to each objective, and the pertinent attributes for evaluating locations with respect to each objective. 51 references, 47 figures, 4 tables.

  5. Alternative Fuels Data Center: Alternative Fueling Station Locator

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

    Locate Stations Printable Version Share this resource Send a link to Alternative Fuels Data Center: Alternative Fueling Station Locator to someone by E-mail Share Alternative Fuels Data Center: Alternative Fueling Station Locator on Facebook Tweet about Alternative Fuels Data Center: Alternative Fueling Station Locator on Twitter Bookmark Alternative Fuels Data Center: Alternative Fueling Station Locator on Google Bookmark Alternative Fuels Data Center: Alternative Fueling Station Locator on

  6. Alternative Fuels Data Center: Biodiesel Fueling Station Locations

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

    Fueling Station Locations to someone by E-mail Share Alternative Fuels Data Center: Biodiesel Fueling Station Locations on Facebook Tweet about Alternative Fuels Data Center: Biodiesel Fueling Station Locations on Twitter Bookmark Alternative Fuels Data Center: Biodiesel Fueling Station Locations on Google Bookmark Alternative Fuels Data Center: Biodiesel Fueling Station Locations on Delicious Rank Alternative Fuels Data Center: Biodiesel Fueling Station Locations on Digg Find More places to

  7. Alternative Fuels Data Center: Ethanol Fueling Station Locations

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

    Station Locations to someone by E-mail Share Alternative Fuels Data Center: Ethanol Fueling Station Locations on Facebook Tweet about Alternative Fuels Data Center: Ethanol Fueling Station Locations on Twitter Bookmark Alternative Fuels Data Center: Ethanol Fueling Station Locations on Google Bookmark Alternative Fuels Data Center: Ethanol Fueling Station Locations on Delicious Rank Alternative Fuels Data Center: Ethanol Fueling Station Locations on Digg Find More places to share Alternative

  8. Alternative Fuels Data Center: Natural Gas Fueling Station Locations

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

    Station Locations to someone by E-mail Share Alternative Fuels Data Center: Natural Gas Fueling Station Locations on Facebook Tweet about Alternative Fuels Data Center: Natural Gas Fueling Station Locations on Twitter Bookmark Alternative Fuels Data Center: Natural Gas Fueling Station Locations on Google Bookmark Alternative Fuels Data Center: Natural Gas Fueling Station Locations on Delicious Rank Alternative Fuels Data Center: Natural Gas Fueling Station Locations on Digg Find More places to

  9. Alternative Fuels Data Center: Propane Fueling Station Locations

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

    Station Locations to someone by E-mail Share Alternative Fuels Data Center: Propane Fueling Station Locations on Facebook Tweet about Alternative Fuels Data Center: Propane Fueling Station Locations on Twitter Bookmark Alternative Fuels Data Center: Propane Fueling Station Locations on Google Bookmark Alternative Fuels Data Center: Propane Fueling Station Locations on Delicious Rank Alternative Fuels Data Center: Propane Fueling Station Locations on Digg Find More places to share Alternative

  10. Fault Locating, Prediction and Protection (FLPPS)

    SciTech Connect (OSTI)

    Yinger, Robert, J.; Venkata, S., S.; Centeno, Virgilio

    2010-09-30

    One of the main objectives of this DOE-sponsored project was to reduce customer outage time. Fault location, prediction, and protection are the most important aspects of fault management for the reduction of outage time. In the past most of the research and development on power system faults in these areas has focused on transmission systems, and it is not until recently with deregulation and competition that research on power system faults has begun to focus on the unique aspects of distribution systems. This project was planned with three Phases, approximately one year per phase. The first phase of the project involved an assessment of the state-of-the-art in fault location, prediction, and detection as well as the design, lab testing, and field installation of the advanced protection system on the SCE Circuit of the Future located north of San Bernardino, CA. The new feeder automation scheme, with vacuum fault interrupters, will limit the number of customers affected by the fault. Depending on the fault location, the substation breaker might not even trip. Through the use of fast communications (fiber) the fault locations can be determined and the proper fault interrupting switches opened automatically. With knowledge of circuit loadings at the time of the fault, ties to other circuits can be closed automatically to restore all customers except the faulted section. This new automation scheme limits outage time and increases reliability for customers. The second phase of the project involved the selection, modeling, testing and installation of a fault current limiter on the Circuit of the Future. While this project did not pay for the installation and testing of the fault current limiter, it did perform the evaluation of the fault current limiter and its impacts on the protection system of the Circuit of the Future. After investigation of several fault current limiters, the Zenergy superconducting, saturable core fault current limiter was selected for installation. Because of some testing problems with the Zenergy fault current limiter, installation was delayed until early 2009 with it being put into operation on March 6, 2009. A malfunction of the FCL controller caused the DC power supply to the superconducting magnet to be turned off. This inserted the FCL impedance into the circuit while it was in normal operation causing a voltage resonance condition. While these voltages never reached a point where damage would occur on customer equipment, steps were taken to insure this would not happen again. The FCL was reenergized with load on December 18, 2009. A fault was experienced on the circuit with the FCL in operation on January 14, 2010. The FCL operated properly and reduced the fault current by about 8%, what was expected from tests and modeling. As of the end of the project, the FCL was still in operation on the circuit. The third phase of the project involved the exploration of several advanced protection ideas that might be at a state where they could be applied to the Circuit of the Future and elsewhere in the SCE electrical system. Based on the work done as part of the literature review and survey, as well as a number of internal meetings with engineering staff at SCE, a number of ideas were compiled. These ideas were then evaluated for applicability and ability to be applied on the Circuit of the Future in the time remaining for the project. Some of these basic ideas were implemented on the circuit including measurement of power quality before and after the FCL. It was also decided that we would take what was learned as part of the Circuit of the Future work and extend it to the next generation circuit protection for SCE. Also at this time, SCE put in a proposal to the DOE for the Irvine Smart Grid Demonstration using ARRA funding. SCE was successful in obtaining funding for this proposal, so it was felt that exploration of new protection schemes for this Irvine Smart Grid Demonstration would be a good use of the project resources. With this in mind, a protection system that uses fault interrupting switches, high speed communications, and looping two radial distribution circuits would have the potential for significant reductions in interruption time and number of interruptions for customers.

  11. Methodology for Use of Reclaimed Water at Federal Locations ...

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

    Methodology for Use of Reclaimed Water at Federal Locations Methodology for Use of Reclaimed Water at Federal Locations Fact sheet offers guidelines to help Federal agencies use ...

  12. Research Site Locations for Current EERE Postdoctoral Awards...

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

    Site Locations for Current EERE Postdoctoral Awards Research Site Locations for Current EERE Postdoctoral Awards Image icon mappostdoctoral-researchawards.png More Documents & ...

  13. Property:EIA/861/NercLocation | Open Energy Information

    Open Energy Info (EERE)

    type String. Description: Nerc Location NERC Location: The North American Electric Reliability Corporation (NERC) region where the utility has its primary business operations...

  14. The Influence of Building Location on Combined Heat and Power...

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

    The Influence of Building Location on Combined Heat and Power Hydrogen (Tri-Generation) ... location on the economics of Combined Heat and Power Hydrogen (Tri-Generation) systems. ...

  15. Alternative Fuels Data Center: Alternative Fueling Station Locator

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

    19,706 alternative fuel stations in the United States Excluding private stations Location details are subject to change. We recommend calling the stations to verify location, hours...

  16. Homodyne impulse radar hidden object locator

    DOE Patents [OSTI]

    McEwan, Thomas E.

    1996-01-01

    An electromagnetic detector is designed to locate an object hidden behind a separator or a cavity within a solid object. The detector includes a PRF generator for generating 2 MHz pulses, a homodyne oscillator for generating a 2 kHz square wave, and for modulating the pulses from the PRF generator. A transmit antenna transmits the modulated pulses through the separator, and a receive antenna receives the signals reflected off the object. The receiver path of the detector includes a sample and hold circuit, an AC coupled amplifier which filters out DC bias level shifts in the sample and hold circuit, and a rectifier circuit connected to the homodyne oscillator and to the AC coupled amplifier, for synchronously rectifying the modulated pulses transmitted over the transmit antenna. The homodyne oscillator modulates the signal from the PRF generator with a continuous wave (CW) signal, and the AC coupled amplifier operates with a passband centered on that CW signal. The present detector can be used in several applications, including the detection of metallic and non-metallic objects, such as pipes, studs, joists, nails, rebars, conduits and electrical wiring, behind wood wall, ceiling, plywood, particle board, dense hardwood, masonry and cement structure. The detector is portable, light weight, simple to use, inexpensive, and has a low power emission which facilitates the compliance with Part 15 of the FCC rules.

  17. Homodyne impulse radar hidden object locator

    DOE Patents [OSTI]

    McEwan, T.E.

    1996-04-30

    An electromagnetic detector is designed to locate an object hidden behind a separator or a cavity within a solid object. The detector includes a PRF generator for generating 2 MHz pulses, a homodyne oscillator for generating a 2 kHz square wave, and for modulating the pulses from the PRF generator. A transmit antenna transmits the modulated pulses through the separator, and a receive antenna receives the signals reflected off the object. The receiver path of the detector includes a sample and hold circuit, an AC coupled amplifier which filters out DC bias level shifts in the sample and hold circuit, and a rectifier circuit connected to the homodyne oscillator and to the AC coupled amplifier, for synchronously rectifying the modulated pulses transmitted over the transmit antenna. The homodyne oscillator modulates the signal from the PRF generator with a continuous wave (CW) signal, and the AC coupled amplifier operates with a passband centered on that CW signal. The present detector can be used in several applications, including the detection of metallic and non-metallic objects, such as pipes, studs, joists, nails, rebars, conduits and electrical wiring, behind wood wall, ceiling, plywood, particle board, dense hardwood, masonry and cement structure. The detector is portable, light weight, simple to use, inexpensive, and has a low power emission which facilitates the compliance with Part 15 of the FCC rules. 15 figs.

  18. SAPLE: Sandia Advanced Personnel Locator Engine.

    SciTech Connect (OSTI)

    Procopio, Michael J.

    2010-04-01

    We present the Sandia Advanced Personnel Locator Engine (SAPLE) web application, a directory search application for use by Sandia National Laboratories personnel. SAPLE's purpose is to return Sandia personnel 'results' as a function of user search queries, with its mission to make it easier and faster to find people at Sandia. To accomplish this, SAPLE breaks from more traditional directory application approaches by aiming to return the correct set of results while placing minimal constraints on the user's query. Two key features form the core of SAPLE: advanced search query interpretation and inexact string matching. SAPLE's query interpretation permits the user to perform compound queries when typing into a single search field; where able, SAPLE infers the type of field that the user intends to search on based on the value of the search term. SAPLE's inexact string matching feature yields a high-quality ranking of personnel search results even when there are no exact matches to the user's query. This paper explores these two key features, describing in detail the architecture and operation of SAPLE. Finally, an extensive analysis on logged search query data taken from an 11-week sample period is presented.

  19. TAGGING, TRACKING AND LOCATING WITHOUT GPS

    SciTech Connect (OSTI)

    Cordaro, J.; Coleman, T.; Shull, D.

    2012-07-08

    The Savannah River National Laboratory (SRNL) was requested to lead a Law Enforcement Working Group that was formed to collaborate on common operational needs. All agencies represented on the working group ranked their need to tag, track, and locate a witting or unwitting target as their highest priority. Specifically, they were looking for technologies more robust than Global Positioning Satellite (GPS), could communicate back to the owner, and worked where normal cell phone communications did not work or were unreliable. SRNL brought together multiple technologies in a demonstration that was held in in various Alaska venues, including metropolitan, wilderness, and at-sea that met the working group's requirements. Using prototypical technologies from Boeing, On Ramp, and Fortress, SRNL was able to demonstrate the ability to track personnel and material in all scenarios including indoors, in heavily wooden areas, canyons, and in parking garages. In all cases GPS signals were too weak to measure. Bi-directional communication was achieved in areas that Wi-Fi, cell towers, or traditional radios would not perform. The results of the exercise will be presented. These technologies are considered ideal for tracking high value material such has nuclear material with a platform that allows seamless tracking anywhere in the world, indoors or outdoors.

  20. Spin Hall switching of the magnetization in Ta/TbFeCo structures with bulk perpendicular anisotropy

    SciTech Connect (OSTI)

    Zhao, Zhengyang; Jamali, Mahdi; Smith, Angeline K.; Wang, Jian-Ping

    2015-03-30

    Spin-orbit torques are studied in Ta/TbFeCo/MgO patterned structures, where the ferrimagnetic material TbFeCo provides a strong bulk perpendicular magnetic anisotropy (bulk-PMA) independent of the interfaces. The current-induced magnetization switching in TbFeCo is investigated in the presence of a perpendicular, longitudinal, or transverse field. An unexpected partial-switching phenomenon is observed in the presence of a transverse field unique to our bulk-PMA material. It is found that the anti-damping torque related with spin Hall effect is very strong, and a spin Hall angle is determined to be 0.12. The field-like torque related with Rashba effect is unobservable, suggesting that the interface play a significant role in Rashba-like torque.

  1. Quantum valley Hall states and topological transitions in Pt(Ni, Pd)-decorated silicene: A first-principles study

    SciTech Connect (OSTI)

    Zhao, Bao; Zhang, Jiayong; Wang, Yicheng; Yang, Zhongqin

    2014-12-28

    The electronic states and topological behaviors of Pt(Ni, Pd)-decorated silicene are investigated by using an ab-initio method. All the three kinds of the adatoms prefer hollow sites of the silicene, guaranteeing the Dirac cones unbroken. The Pt(Ni, Pd)-decorated silicene systems all present quantum valley Hall (QVH) states with the gap opened exactly at the Fermi level. The gaps of the QVH states can be increased substantially by applying a positive electric field. Very fascinating phase transitions from QVH to quantum spin Hall (QSH) and then to QVH again are achieved in the Pt/Ni-decorated silicene when a negative electric field is applied. The QSH state in the Pd case with a negative electric field is, however, quenched because of relatively larger Rashba spin-orbit coupling (SOC) than the intrinsic SOC in the system. Our findings may be useful for the applications of silicene-based devices in valleytronics and spintronics.

  2. Metallic transport and large anomalous Hall effect at room temperature in ferrimagnetic Mn{sub 4}N epitaxial thin film

    SciTech Connect (OSTI)

    Shen, Xi; Shigematsu, Kei; Chikamatsu, Akira Fukumura, Tomoteru; Hirose, Yasushi; Hasegawa, Tetsuya

    2014-08-18

    We report the electrical transport properties of ferrimagnetic Mn{sub 4}N (001) epitaxial thin films grown by pulsed laser deposition on MgO (001) substrates. The Mn{sub 4}N thin films were tetragonally distorted with a ratio of out-of-plane to in-plane lattice constants of 0.987 and showed perpendicular magnetic anisotropy with an effective magnetic anisotropy constant of 0.16?MJ/m{sup 3}, which is comparable with that of a recently reported molecular-beam-epitaxy-grown film. The thin films exhibited metallic transport with a room temperature resistivity of 125??? cm in addition to a large anomalous Hall effect with a Hall angle tangent of 0.023.

  3. First e-/Photon Commissioning Results for the GlueX Experiment/Hall D at CEBAF

    SciTech Connect (OSTI)

    McCaughan, Michael D.; Satogata, Todd J.; Roblin, Yves R.; Benesch, Jay F.

    2015-09-01

    Experimental Hall D, with flagship experiment GlueX, was constructed as part of the 12 GeV CEBAF upgrade. A new magnetically extracted electron beam line was installed to support this hall. Bremsstrahlung photons from retractable radiators, are delivered to the experiment through a series of collimators following a long drift to allow for beam convergence. Coherent Bremsstrahlung generated by interaction with a diamond radiator will achieve a nominal 40% linear polarization and photon energies between 8.5 and 9 GeV from 12.1 GeV electrons, which are then tagged or diverted to a medium power 60kW electron dump. The expected photon flux is 107-108 Hz. This paper discusses the experimental line design, commissioning experience gained since first beam in spring 2014, and the present results of beam commissioning by the experiment.

  4. The spin Hall angle and spin diffusion length of Pd measured by spin pumping and microwave photoresistance

    SciTech Connect (OSTI)

    Tao, X. D.; Feng, Z.; Miao, B. F.; Sun, L.; You, B.; Wu, D.; Du, J.; Zhang, W.; Ding, H. F., E-mail: hfding@nju.edu.cn [Department of Physics, National Laboratory of Solid State Microstructures, Nanjing University, 22 Hankou Road, Nanjing 210093 (China)

    2014-05-07

    We present the experimental study of the spin Hall angle (SHA) and spin diffusion length of Pd with the spin pumping and microwave photoresistance effects. The Py/Pd bilayer stripes are excited with an out-of-plane microwave magnetic field. The pure spin current is thus pumped and transforms into charge current via the inverse spin Hall effect (ISHE) in Pd layer, yielding an ISHE voltage. The ISHE voltage can be distinguished from the unwanted signal caused by the anisotropic magnetoresistance according to their different symmetries. Together with Pd thickness dependent measurements of in and out-of-plane precessing angles and effective spin mixing conductance, the SHA and spin-diffusion length of Pd are quantified as 0.0056??0.0007 and 7.3??0.7?nm, respectively.

  5. Planar Hall effect in Y{sub 3}Fe{sub 5}O{sub 12}/IrMn films

    SciTech Connect (OSTI)

    Zhang, X. Zou, L. K.

    2014-12-29

    The planar Hall effect of IrMn on an yttrium iron garnet (YIG = Y{sub 3}Fe{sub 5}O{sub 12}) was measured in the magnetic field rotating in the film plane. The magnetic field angular dependence of planar Hall resistance (PHR) was observed in YIG/IrMn bilayer at different temperatures, while the Gd{sub 3}Ga{sub 5}O{sub 12}/IrMn film shows constant PHR for different magnetic field angles at both 10 K and 300 K. This provides evidence that IrMn has interfacial spins which can be led by ferrimagnetic layer in YIG/IrMn structure. A hysteresis can be observed in PHR-magnetic field angle loop of YIG/IrMn film at 10 K, indicative of the irreversible switching of IrMn interfacial spins at low temperature.

  6. Analytical and computational study of the ideal full two-fluid plasma model and asymptotic approximations for Hall-magnetohydrodynamics

    SciTech Connect (OSTI)

    Srinivasan, B.; Shumlak, U.

    2011-09-15

    The 5-moment two-fluid plasma model uses Euler equations to describe the ion and electron fluids and Maxwell's equations to describe the electric and magnetic fields. Two-fluid physics becomes significant when the characteristic spatial scales are on the order of the ion skin depth and characteristic time scales are on the order of the ion cyclotron period. The full two-fluid plasma model has disparate characteristic speeds ranging from the ion and electron speeds of sound to the speed of light. Two asymptotic approximations are applied to the full two-fluid plasma to arrive at the Hall-MHD model, namely negligible electron inertia and infinite speed of light. The full two-fluid plasma model and the Hall-MHD model are studied for applications to an electromagnetic plasma shock, geospace environmental modeling (GEM challenge) magnetic reconnection, an axisymmetric Z-pinch, and an axisymmetric field reversed configuration (FRC).

  7. Microsoft PowerPoint - Town_Hall_Slides_8_6_15

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

    415 - at 6 p.m. the WIPP Emergency Operations Center (EOC) was activated when Radiation Control Technicians detected radioactive contamination at the Station B sampler location...

  8. Building America Top Innovations Hall of Fame Profile … Integration of HVAC System Design with Simplified Duct Distribution

    Energy Savers [EERE]

    research team IBACOS worked with S&A Homes to design a compact HVAC layout with all ducts in conditioned space in several homes in Pittsburgh. Poor-quality HVAC design and installation can reduce the overall HVAC system energy efficiency up to 30%. HVAC quality installation practices are essential to realizing the promise of high-performance homes. BUILDING AMERICA TOP INNOVATIONS HALL OF FAME PROFILE INNOVATIONS CATEGORY: 1. Advanced Technologies and Practices 1.1 Building Science Solutions

  9. Fermilab | Newsroom | Press Releases | 2010 | Fatality at Fermilab

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

    Fermi National Accelerator Laboratory. Around 10:50 a.m. employees investigating a noise found a young female lying in the atrium of Wilson Hall. Batavia paramedics pronounced...

  10. Current Status of Access to Fermilab

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

    site maps to guide them to the public areas. The public areas extend into the Lederman Education Center and to the ground floor and atrium of Wilson Hall, and Ramsey Auditorium....

  11. Isotropic Hall effect and ''freeze-in'' of carriers in the InGaAs self-assembled quantum wires

    SciTech Connect (OSTI)

    Kunets, Vas. P.; Prosandeev, S.; Mazur, Yu. I.; Ware, M. E.; Teodoro, M. D.; Dorogan, V. G.; Lytvyn, P. M.; Salamo, G. J.

    2011-10-15

    Using molecular beam epitaxy, we prepared an anisotropic media consisting of InGaAs quantum wires epitaxially grown on GaAs (311)A. Anisotropy is observed in the lateral conductivity and photoluminescence polarization. However, an isotropic Hall effect is observed in the same samples. We show that the Hall effect in this anisotropic heterostructure remains isotropic regardless of the change of the doping in GaAs barriers and regardless of the InGaAs coverage, whereas the conductivity anisotropy experiences a strong change under these actions. In addition, we observed an anomalous increase in carrier density, ''freeze-in,'' at low temperatures. In order to explain this, we generalized the theory of Look [D. C. Look, Phys. Rev B 42, 3578 (1990)] by considering the low field magneto-transport in anisotropic media. This theory confirms that the Hall constant remains isotropic in anisotropic semiconductor heterostructures, agreeing with our experiment and explains the anomalous behavior of carriers as a result of multi-band conductivity.

  12. Low frequency azimuthal stability of the ionization region of the Hall thruster discharge. I. Local analysis

    SciTech Connect (OSTI)

    Escobar, D.; Ahedo, E.

    2014-04-15

    Results based on a local linear stability analysis of the Hall thruster discharge are presented. A one-dimensional azimuthal framework is used including three species: neutrals, singly charged ions, and electrons. A simplified linear model is developed with the aim of deriving analytical expressions to characterize the stability of the ionization region. The results from the local analysis presented here indicate the existence of an instability that gives rise to an azimuthal oscillation in the +E??B direction with a long wavelength. According to the model, the instability seems to appear only in regions where the ionization and the electric field make it possible to have positive gradients of plasma density and ion velocity at the same time. A more complex model is also solved numerically to validate the analytical results. Additionally, parametric variations are carried out with respect to the main parameters of the model to identify the trends of the instability. As the temperature increases and the neutral-to-plasma density ratio decreases, the growth rate of the instability decreases down to a limit where azimuthal perturbations are no longer unstable.

  13. Large anomalous Hall effect in ferromagnetic insulator-topological insulator heterostructures

    SciTech Connect (OSTI)

    Alegria, L. D.; Petta, J. R.; Ji, H.; Cava, R. J.; Yao, N.; Clarke, J. J.

    2014-08-04

    We demonstrate the van der Waals epitaxy of the topological insulator compound Bi{sub 2}Te{sub 3} on the ferromagnetic insulator Cr{sub 2}Ge{sub 2}Te{sub 6}. The layers are oriented with (001)Bi{sub 2}Te{sub 3}||(001)Cr{sub 2}Ge{sub 2}Te{sub 6} and (110)Bi{sub 2}Te{sub 3}||(100)Cr{sub 2}Ge{sub 2}Te{sub 6}. Cross-sectional transmission electron microscopy indicates the formation of a sharp interface. At low temperatures, bilayers consisting of Bi{sub 2}Te{sub 3} on Cr{sub 2}Ge{sub 2}Te{sub 6} exhibit a large anomalous Hall effect (AHE). Tilted field studies of the AHE indicate that the easy axis lies along the c-axis of the heterostructure, consistent with magnetization measurements in bulk Cr{sub 2}Ge{sub 2}Te{sub 6}. The 61 K Curie temperature of Cr{sub 2}Ge{sub 2}Te{sub 6} and the use of near-stoichiometric materials may lead to the development of spintronic devices based on the AHE.

  14. Electroproduction de pions neutres dans le Hall A au Jefferson Laboratory

    SciTech Connect (OSTI)

    Eric Fuchey

    2010-06-01

    The past decade has seen a strong evolution of the study of the hadron structure through exclusive processes, allowing to access to a more complete description of this structure. Exclusive processes include DVCS (Deeply Virtual Compton Scattering) as well as hard exclusive meson production. This document is particularly focussed on the latter, and more particularly on exclusive neutral pion production. In this thesis is described the analysis of triple coincidence events H(e, e'{gamma}{gamma})X, which were a consequent by-product of the DVCS experiment which occured during Fall 2004 at Jefferson Lab Hall A, to extract the ep {yields} ep{pi}{sup 0} cross section. This cross section has been measured at two values of four-momentum transfer Q{sup 2} = 1.9 GeV{sup 2} and Q{sup 2} = 2.3 GeV{sup 2}. The statistical precision for these measurements is achieved at better than 5 %. The kinematic range allows to study the evolution of the extracted cross section as a function of Q{sup 2} and W. Results are be confronted with Regge inspired calculations and Generalized (GPD) predictions. An intepretation of our data within the framework of semi-inclusive deep inelastic scattering is also discussed.

  15. Influence of Mn concentration on magnetic topological insulator MnxBi2−xTe3 thin-film Hall-effect sensor

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

    Ni, Y.; Zhang, Z.; Nlebedim, I. C.; Hadimani, R. L.; Jiles, D. C.

    2015-06-11

    Hall-effect (HE) sensors based on high-quality Mn-doped Bi2Te3 topological insulator (TI) thin films have been systematically studied in this paper. Improvement of Hall sensitivity is found after doping the magnetic element Mn into Bi2Te3. The sensors with low Mn concentrations, MnxBi2-xTe3, x = 0.01 and 0.08 show the linear behavior of Hall resistance with sensitivity about 5 Ω/T. And their Hall sensitivity shows weak dependence on temperature. For sensors with high Mn concentration (x = 0.23), the Hall resistance with respect to magnetic field shows a hysteretic behavior. Moreover, its sensitivity shows almost eight times as high as that ofmore »the HE sensors with low Mn concentration. The highest sensitivity can reach 43 Ω/T at very low magnetic field. This increase of Hall sensitivity is caused by the occurrence of anomalous HE (AHE) after ferromagnetic phase transition. Our work indicates that the magnetic-element-doped TIs with AHE are good candidates for HE sensors.« less

  16. Influence of Mn concentration on magnetic topological insulator MnxBi2−xTe3 thin-film Hall-effect sensor

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

    Ni, Y.; Zhang, Z.; Nlebedim, I. C.; Hadimani, R. L.; Jiles, D. C.

    2015-06-11

    Hall-effect (HE) sensors based on high-quality Mn-doped Bi2Te3 topological insulator (TI) thin films have been systematically studied in this paper. Improvement of Hall sensitivity is found after doping the magnetic element Mn into Bi2Te3. The sensors with low Mn concentrations, MnxBi2-xTe3, x = 0.01 and 0.08 show the linear behavior of Hall resistance with sensitivity about 5 Ω/T. And their Hall sensitivity shows weak dependence on temperature. For sensors with high Mn concentration (x = 0.23), the Hall resistance with respect to magnetic field shows a hysteretic behavior. Moreover, its sensitivity shows almost eight times as high as that ofmore » the HE sensors with low Mn concentration. The highest sensitivity can reach 43 Ω/T at very low magnetic field. This increase of Hall sensitivity is caused by the occurrence of anomalous HE (AHE) after ferromagnetic phase transition. Our work indicates that the magnetic-element-doped TIs with AHE are good candidates for HE sensors.« less

  17. Alternative Fuels Data Center: Electric Vehicle Charging Station Locations

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

    Electric Vehicle Charging Station Locations to someone by E-mail Share Alternative Fuels Data Center: Electric Vehicle Charging Station Locations on Facebook Tweet about Alternative Fuels Data Center: Electric Vehicle Charging Station Locations on Twitter Bookmark Alternative Fuels Data Center: Electric Vehicle Charging Station Locations on Google Bookmark Alternative Fuels Data Center: Electric Vehicle Charging Station Locations on Delicious Rank Alternative Fuels Data Center: Electric Vehicle

  18. Alternative Fuels Data Center: Hydrogen Fueling Station Locations

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

    Hydrogen Printable Version Share this resource Send a link to Alternative Fuels Data Center: Hydrogen Fueling Station Locations to someone by E-mail Share Alternative Fuels Data Center: Hydrogen Fueling Station Locations on Facebook Tweet about Alternative Fuels Data Center: Hydrogen Fueling Station Locations on Twitter Bookmark Alternative Fuels Data Center: Hydrogen Fueling Station Locations on Google Bookmark Alternative Fuels Data Center: Hydrogen Fueling Station Locations on Delicious Rank

  19. File:VallesLocationMap.pdf | Open Energy Information

    Open Energy Info (EERE)

    VallesLocationMap.pdf Jump to: navigation, search File File history File usage Metadata File:VallesLocationMap.pdf Size of this preview: 800 479 pixels. Full resolution (934...

  20. Locations of Smart Grid Demonstration and Large-Scale Energy...

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

    Locations of Smart Grid Demonstration and Large-Scale Energy Storage Projects Locations of Smart Grid Demonstration and Large-Scale Energy Storage Projects Map of the United States ...

  1. A Look at Health Care Buildings - Where are they located

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

    Location Return to: A Look at Health Care Buildings How large are they? How many employees are there? Where are they located? How old are they? Who owns and occupies them? Are they...

  2. Alternative Fueling Station Locator App Provides Info at Your Fingertips |

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

    Department of Energy Alternative Fueling Station Locator App Provides Info at Your Fingertips Alternative Fueling Station Locator App Provides Info at Your Fingertips November 15, 2013 - 10:12am Addthis The Alternative Fueling Station Locator iPhone app helps you find fueling stations that offer electricity, natural gas, biodiesel, E85, propane, or hydrogen. | Energy Department The Alternative Fueling Station Locator iPhone app helps you find fueling stations that offer electricity, natural

  3. Grain-boundary strengthening in nanocrystalline chromium and the Hall- Petch coefficient of body-centered cubic metals

    SciTech Connect (OSTI)

    Wu, Dong; Junyan, Zhang; Huang, J C; Bei, Hongbin; Nieh, Tai-Gang

    2013-01-01

    Nanocrystalline Cr (nc-Cr) was synthesized by electrodeposition. Samples with various grain sizes (19 57 nm) were prepared by annealing the as-deposited sample. Microstructures were examined using X-ray and electron microscopy, and the mechanical prop- erties were evaluated using nanoindentation. The strength of nc-Cr samples apparently obeyed the classical Hall Petch relationship. It was found that hardening potency caused by grain refinement was generally higher in body-centered cubic metals than that in face-centered cubic and hexagonal close-packed metals. A possible explanation was offered.

  4. Radiation and ionization energy loss simulation for the GDH sum rule experiment in Hall-A at Jefferson Lab

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

    Yan, Xin -Hu; Ye, Yun -Xiu; Chen, Jian -Ping; Lu, Hai -Jiang; Zhu, Peng -Jia; Jiang, Feng -Jian

    2015-07-17

    The radiation and ionization energy loss are presented for single arm Monte Carlo simulation for the GDH sum rule experiment in Hall-A at Jefferson Lab. Radiation and ionization energy loss are discussed formore » $$^{12}C$$ elastic scattering simulation. The relative momentum ratio $$\\frac{\\Delta p}{p}$$ and $$^{12}C$$ elastic cross section are compared without and with radiation energy loss and a reasonable shape is obtained by the simulation. The total energy loss distribution is obtained, showing a Landau shape for $$^{12}C$$ elastic scattering. This simulation work will give good support for radiation correction analysis of the GDH sum rule experiment.« less

  5. Temperature dependence of the photo-induced inverse spin Hall effect in Au/InP hybrid structures

    SciTech Connect (OSTI)

    Khamari, Shailesh K. Porwal, S.; Dixit, V. K.; Sharma, T. K.

    2014-01-27

    Photo-induced Inverse Spin Hall Effect (ISHE) measurements on Au/InP hybrid structures are performed over a temperature range of 45 to 300?K. Dependence of the spin current density on the degree of circular polarization and also on the angle of incidence of laser beam confirms the ISHE origin of measured signal. The magnitude of ISHE increases with sample cooling. A numerical model based on the spin relaxation of non-equilibrium spin-polarized electrons is proposed for predicting the temperature dependence of ISHE. Our results indicate that the proposed device can be used as a spin photodetector over a wide temperature range.

  6. MO-PIS-Exhibit Hall-01: Tools for TG-142 Linac Imaging QA I

    SciTech Connect (OSTI)

    Clements, M; Wiesmeyer, M

    2014-06-15

    Partners in Solutions is an exciting new program in which AAPM partners with our vendors to present practical hands-on information about the equipment and software systems that we use in our clinics. The therapy topic this year is solutions for TG-142 recommendations for linear accelerator imaging QA. Note that the sessions are being held in a special purpose room built on the Exhibit Hall Floor, to encourage further interaction with the vendors. Automated Imaging QA for TG-142 with RIT Presentation Time: 2:45 3:15 PM This presentation will discuss software tools for automated imaging QA and phantom analysis for TG-142. All modalities used in radiation oncology will be discussed, including CBCT, planar kV imaging, planar MV imaging, and imaging and treatment coordinate coincidence. Vendor supplied phantoms as well as a variety of third-party phantoms will be shown, along with appropriate analyses, proper phantom setup procedures and scanning settings, and a discussion of image quality metrics. Tools for process automation will be discussed which include: RIT Cognition (machine learning for phantom image identification), RIT Cerberus (automated file system monitoring and searching), and RunQueueC (batch processing of multiple images). In addition to phantom analysis, tools for statistical tracking, trending, and reporting will be discussed. This discussion will include an introduction to statistical process control, a valuable tool in analyzing data and determining appropriate tolerances. An Introduction to TG-142 Imaging QA Using Standard Imaging Products Presentation Time: 3:15 3:45 PM Medical Physicists want to understand the logic behind TG-142 Imaging QA. What is often missing is a firm understanding of the connections between the EPID and OBI phantom imaging, the software algorithms that calculate the QA metrics, the establishment of baselines, and the analysis and interpretation of the results. The goal of our brief presentation will be to establish and solidify these connections. Our talk will be motivated by the Standard Imaging, Inc. phantom and software solutions. We will present and explain each of the image quality metrics in TG-142 in terms of the theory, mathematics, and algorithms used to implement them in the Standard Imaging PIPSpro software. In the process, we will identify the regions of phantom images that are analyzed by each algorithm. We then will discuss the process of the creation of baselines and typical ranges of acceptable values for each imaging quality metric.

  7. Spectral shape deformation in inverse spin Hall voltage in Y{sub 3}Fe{sub 5}O{sub 12}|Pt bilayers at high microwave power levels

    SciTech Connect (OSTI)

    Lustikova, J. Shiomi, Y.; Handa, Y.; Saitoh, E.

    2015-02-21

    We report on the deformation of microwave absorption spectra and of the inverse spin Hall voltage signals in thin film bilayers of yttrium iron garnet (YIG) and platinum at high microwave power levels in a 9.45-GHz TE{sub 011} cavity. As the microwave power increases from 0.15 to 200 mW, the resonance field shifts to higher values, and the initially Lorentzian spectra of the microwave absorption intensity as well as the inverse spin Hall voltage signals become asymmetric. The contributions from opening of the magnetization precession cone and heating of YIG cannot well reproduce the data. Control measurements of inverse spin Hall voltages on thin-film YIG|Pt systems with a range of line widths underscore the role of spin-wave excitations in spectral deformation.

  8. Temperature-driven band inversion in Pb0.77Sn0.23Se: Optical and Hall effect studies

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

    Anand, Naween; Buvaev, Sanal; Hebard, A. F.; Tanner, D. B.; Chen, Zhiguo; Li, Zhiqiang; Choudhary, Kamal; Sinnott, S. B.; Gu, Genda; Martin, C.

    2014-12-23

    Optical and Hall-effect measurements have been performed on single crystals of Pb₀.₇₇Sn₀.₂₃Se, a IV-VI mixed chalcogenide. The temperature dependent (10–300 K) reflectance was measured over 40–7000 cm⁻¹ (5–870 meV) with an extension to 15,500 cm⁻¹ (1.92 eV) at room temperature. The reflectance was fit to the Drude-Lorentz model using a single Drude component and several Lorentz oscillators. The optical properties at the measured temperatures were estimated via Kramers-Kronig analysis as well as by the Drude-Lorentz fit. The carriers were p-type with the carrier density determined by Hall measurements. A signature of valence intraband transition is found in the low-energy opticalmore » spectra. It is found that the valence-conduction band transition energy as well as the free carrier effective mass reach minimum values at 100 K, suggesting temperature-driven band inversion in the material. Thus, density function theory calculation for the electronic band structure also make similar predictions.« less

  9. NETL Emergency Preparedness and Contact Information by Location

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

    NETL Emergency Information by Location There are currently no emergency events at any NETL location. General Emergency Preparedness Information by location Monongalia County, West Virginia Allegheny County, Pennsylvania Linn County, Oregon Shelter-in-Place or Evacuation A release of hazardous materials from an NETL site, may require a shelter-in-place or evacuation instructions. Shelter-in-place means that you should stay in your home, shut all the windows and doors, and shut off any fans that

  10. Automated detection and location of indications in eddy current signals

    DOE Patents [OSTI]

    Brudnoy, David M.; Oppenlander, Jane E.; Levy, Arthur J.

    2000-01-01

    A computer implemented information extraction process that locates and identifies eddy current signal features in digital point-ordered signals, signals representing data from inspection of test materials, by enhancing the signal features relative to signal noise, detecting features of the signals, verifying the location of the signal features that can be known in advance, and outputting information about the identity and location of all detected signal features.

  11. Energy Department Announces Locations of Consent-Based Siting

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

    Initiative's Eight Public Meetings | Department of Energy Energy Department Announces Locations of Consent-Based Siting Initiative's Eight Public Meetings Energy Department Announces Locations of Consent-Based Siting Initiative's Eight Public Meetings February 18, 2016 - 12:10pm Addthis News Media Contact 202-586-4940 DOENews@hq.doe.gov WASHINGTON - The U.S. Department of Energy today announced the locations of eight public meetings on the Department's consent-based siting initiative. These

  12. Energy Department Announces Student Teams, New Location for Solar Decathlon

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

    2013 | Department of Energy Student Teams, New Location for Solar Decathlon 2013 Energy Department Announces Student Teams, New Location for Solar Decathlon 2013 January 26, 2012 - 10:56am Addthis WASHINGTON, DC - At an event today in Albuquerque, New Mexico, U.S. Department of Energy Secretary Steven Chu announced the 20 collegiate teams selected to compete in the U.S. Department of Energy Solar Decathlon 2013 and unveiled the competition's location, the Orange County Great Park in Irvine,

  13. ARM: Ship navigational location and attitude: Position and Heading Data

    Office of Scientific and Technical Information (OSTI)

    (Dataset) | Data Explorer Ship navigational location and attitude: Position and Heading Data Title: ARM: Ship navigational location and attitude: Position and Heading Data Ship navigational location and attitude: Position and Heading Data Authors: Scott Walton Publication Date: 2012-11-03 OSTI Identifier: 1150248 DOE Contract Number: DE-AC05-00OR22725 Resource Type: Dataset Data Type: Numeric Data Research Org: Atmospheric Radiation Measurement (ARM) Archive, Oak Ridge National Laboratory

  14. Locations of Industrial Assessment Centers | Department of Energy

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

    Industrial Assessment Centers (IACs) Locations of Industrial Assessment Centers ... John Gardner Phone: (208) 426-5702 E-mail: jgardner@boisestate.edu Address: CAES Energy ...

  15. Evaluation of Potential Locations for Siting Small Modular Reactors...

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

    Evaluation of Proposed Hampton Roads Area Sites for Using Small Modular Reactors to Support Federal Clean Energy Goals Population Sensitivity Evaluation of Two Candidate Locations ...

  16. Alternative Fueling Station Locator - Mobile | Open Energy Information

    Open Energy Info (EERE)

    version of the Alternative Fueling Station Locator, part of the Department of Energy's Alternative Fuels and Advanced Vehicles Datacenter, allows users to search for alternative...

  17. Location | U.S. DOE Office of Science (SC)

    Office of Science (SC) Website

    OPA Home About Director Staff & Responsibilities Location Jobs Project Management SC ... Project Assessment U.S. Department of Energy ... access control system at the badge ...

  18. EIS-0463: Notice of Public Meeting Location Change | Department...

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

    More Documents & Publications Northern Pass Transmission Line Project Environmental Impact Statement: Announcement of Change in Public Meeting Location: Federal Register Notice ...

  19. Condensing Heating and Water Heating Equipment Workshop Location...

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

    Condensing Heating and Water Heating Equipment Workshop Location: Washington Gas Light Appliance Training Facility 6801 Industrial Road Springfield, VA Date: October 9, 2014 Time: ...

  20. Enhancement of the visibility of objects located below the surface...

    Office of Scientific and Technical Information (OSTI)

    Enhancement of the visibility of objects located below the surface of a scattering medium ... The enhancement of the image contrast of a subsurface structure is based on the ...

  1. Title 33 CFR 115 Bridge Locations and Clearances: Administrative...

    Open Energy Info (EERE)

    115 Bridge Locations and Clearances: Administrative Procedures Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- Federal RegulationFederal...

  2. Located in historic Los Alamos, New Mexico against the backdrop...

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

    Located in historic Los Alamos, New Mexico against the backdrop of the lush Jemez Mountains, ... Teachers develop skills in basic physics concepts, the solar system, Earth's ...

  3. Wind Turbine Manufacturers in the U. S.: Locations and Local...

    Wind Powering America (EERE)

    Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Wind Turbine Manufacturers in the U.S.: Locations and Local Impacts WINDPOWER 2010 Conference...

  4. Argonne Site Map Showing CNM Location | Argonne National Laboratory

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

    Argonne Site Map Showing CNM Location Find your way to the Center for Nanoscale Materials on the Argonne National Laboratory campus. PDF icon CNM-Argonne_map

  5. Research Site Locations for Current and Former EERE Postdoctoral Awards

    Broader source: Energy.gov [DOE]

    Research Site Locations for Current and Former EERE Postdoctoral Awards, from the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy.

  6. NSO Explores Closure Options for Historic Nuclear Testing Locations

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

    NSO Explores Closure Options for Historic Nuclear Testing Locations Recent environmental restoration work at the Nevada National Security Site (NNSS) focuses on a number of ...

  7. LEDS Collaboration in Action Workshop Location | Open Energy...

    Open Energy Info (EERE)

    location close to London (Underground direct to Little Chalfont), the M25 and Heathrow Airport. The Conference Centre is designed around a major presentation suite and offers...

  8. Drone Detection, Video Feed Interception and Pilot Locating System...

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

    Drone Detection, Video Feed Interception and Pilot Locating System The invention provides the capability of detecting commercially available and custom homemade remotely operated...

  9. TU-PIS-Exhibit Hall-01: CT Dose Optimization Technologies II

    SciTech Connect (OSTI)

    Driesser, I; Angel, E

    2014-06-15

    Partners in Solutions is an exciting new program in which AAPM partners with our vendors to present practical “hands-on” information about the equipment and software systems that we use in our clinics. The imaging topic this year is CT scanner dose optimization capabilities. Note that the sessions are being held in a special purpose room built on the Exhibit Hall Floor, to encourage further interaction with the vendors. Siemens‘ Commitment to the Right Dose in Computed Tomography Presentation Time: 11:15 - 11:45 AM Providing sustainable clinical results at highest patient safety: This is the challenge in medical imaging. Especially for Computed Tomography this means applying not simply the lowest, but the right dose for sound diagnostic imaging. Consequently, Siemens is committed to deliver the right dose in CT. In order to reduce radiation to the right dose, the first step is to provide the right dose technology. Through decades of research and development in CT imaging, Siemens CT has constantly introduced new ideas leading to a comprehensive portfolio of unique CARE technologies to deliver the right dose. For example automated kV adjustment based on patient size and the clinical question with CARE kV and three generations of iterative reconstruction. Based on the right dose technology, the next step is to actually scan at the right dose. For this, it is key to know the right dose targets for every examination. Siemens continuously involves CT experts to push developments further and outline how users can best adapt their procedures to the right dose. For users to know whether they met the right dose targets, it is therefore important to understand and monitor the actual absolute dose values. All scanners are delivered with defined default protocols which automatically use the available right dose technologies. Finally, to deliver the right dose not just in singular cases, but ideally to patients everywhere, organizations need then to manage dose across their institutions. Here Siemens offers the right dose management tools for administrations to analyze and document dose, to train their clinical staff and to continuously optimize the application of the right dose in clinical routine. Siemens CT is not only adhering to the ALARA principle, but is inspired by it. With CARE Right Siemens show their commitment to the right dose in CT. Toshiba Aquilion CT Dose Management Tools Presentation Time: 11:45 - 12:15 PM A practical review of Toshiba’s CT dose management technologies from the physicist’s perspective. This presentation will include an overview of Toshiba’s CT dose reduction technologies and dose safeguards. Content will include answers to frequently asked questions relating to dose management, dose tracking, CTDI measurement, ACR accreditation, ACR QC, and protocol review on Toshiba CT systems. Specific topics will include the following: Toshiba’s mechanism of tube current modulation; Exposure record format and interpretation of the values; Dose reporting and dose safeguard tools; Use of AIDR 3D iterative reconstruction; The configuration of task specific image quality target and its integration with AIDR 3D; Tips for scanning the ACR phantom with wide beam geometry; Measuring CTDI for wide beam geometry; Discussion of daily QC procedures and specifications; Tips for annual QC evaluation; Protocol management tools.

  10. MO-PIS-Exhibit Hall-01: Imaging: CT Dose Optimization Technologies I

    SciTech Connect (OSTI)

    Denison, K; Smith, S

    2014-06-15

    Partners in Solutions is an exciting new program in which AAPM partners with our vendors to present practical hands-on information about the equipment and software systems that we use in our clinics. The imaging topic this year is CT scanner dose optimization capabilities. Note that the sessions are being held in a special purpose room built on the Exhibit Hall Floor, to encourage further interaction with the vendors. Dose Optimization Capabilities of GE Computed Tomography Scanners Presentation Time: 11:15 11:45 AM GE Healthcare is dedicated to the delivery of high quality clinical images through the development of technologies, which optimize the application of ionizing radiation. In computed tomography, dose management solutions fall into four categories: employs projection data and statistical modeling to decrease noise in the reconstructed image - creating an opportunity for mA reduction in the acquisition of diagnostic images. Veo represents true Model Based Iterative Reconstruction (MBiR). Using high-level algorithms in tandem with advanced computing power, Veo enables lower pixel noise standard deviation and improved spatial resolution within a single image. Advanced Adaptive Image Filters allow for maintenance of spatial resolution while reducing image noise. Examples of adaptive image space filters include Neuro 3-D filters and Cardiac Noise Reduction Filters. AutomA adjusts mA along the z-axis and is the CT equivalent of auto exposure control in conventional x-ray systems. Dynamic Z-axis Tracking offers an additional opportunity for dose reduction in helical acquisitions while SmartTrack Z-axis Tracking serves to ensure beam, collimator and detector alignment during tube rotation. SmartmA provides angular mA modulation. ECG Helical Modulation reduces mA during the systolic phase of the heart cycle. SmartBeam optimization uses bowtie beam-shaping hardware and software to filter off-axis x-rays - minimizing dose and reducing x-ray scatter. The DICOM Radiation Dose Structured Report (RDSR) generates a dose report at the conclusion of every examination. Dose Check preemptively notifies CT operators when scan parameters exceed user-defined dose thresholds. DoseWatch is an information technology application providing vendor-agnostic dose tracking and analysis for CT (and all other diagnostic x-ray modalities) SnapShot Pulse improves coronary CTA dose management. VolumeShuttle uses two acquisitions to increase coverage, decrease dose, and conserve on contrast administration. Color-Coding for Kids applies the Broselow-Luten Pediatric System to facilitate pediatric emergency care and reduce medical errors. FeatherLight achieves dose optimization through pediatric procedure-based protocols. Adventure Series scanners provide a child-friendly imaging environment promoting patient cooperation with resultant reduction in retakes and patient motion. Philips CT Dose Optimization Tools and Advanced Reconstruction Presentation Time: 11:45 12:15 PM The first part of the talk will cover Dose Reduction and Dose Optimization Technologies present in Philips CT Scanners. The main Technologies to be presented include: DoseRight and tube current modulation (DoseRight, Z-DOM, 3D-DOM, DoseRight Cardiac) Special acquisition modes Beam filtration and beam shapers Eclipse collimator and ClearRay collimator NanoPanel detector DoseRight will cover automatic tube current selection that automatically adjusts the dose for the individual patient. The presentation will explore the modulation techniques currently employed in Philips CT scanners and will include the algorithmic concepts as well as illustrative examples. Modulation and current selection technologies to be covered include the Automatic Current Selection component of DoseRight, ZDOM longitudinal dose modulation, 3D-DOM (combination of longitudinal and rotational dose modulation), Cardiac Dose right (an ECG based dose modulation scheme), and the DoseRight Index (DRI) IQ index. The special acquisition modes covers acquisition techniques such as prospective gating that

  11. Spin- and valley-dependent commensurability oscillations and electric-field-induced quantum Hall plateaux in periodically modulated silicene

    SciTech Connect (OSTI)

    Shakouri, Kh.; Peeters, F. M. [Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen (Belgium); Vasilopoulos, P.; Vargiamidis, V. [Department of Physics, Concordia University, 7141 Sherbrooke Ouest Montral, Qubec H4B 1R6 (Canada); Hai, G.-Q. [Instituto de Fisica de So Carlos, Universidade de So Paulo, So Carlos, SP 13560-970 (Brazil)

    2014-05-26

    We study the commensurability oscillations in silicene subject to a perpendicular electric field E{sub z}, a weak magnetic field B, and a weak periodic potential V=V{sub 0}cos(Cy),C=2?/a{sub 0} with a{sub 0} its period. The field E{sub z} and/or the modulation lift the spin degeneracy of the Landau levels and lead to spin and valley resolved Weiss oscillations. The spin resolution is maximal when the field E{sub z} is replaced by a periodic one E{sub z}=E{sub 0}cos(Dy),D=2?/b{sub 0}, while the valley one is maximal for b{sub 0}?=?a{sub 0}. In certain ranges of B values, the current is fully spin or valley polarized. Additional quantum Hall conductivity plateaux arise due to spin and valley intra-Landau-level transitions.

  12. Attempt to measure magnetic hyperfine fields in metallic thin wires under spin Hall conditions using synchrotron-radiation Mssbauer spectroscopy

    SciTech Connect (OSTI)

    Mibu, K. Tanaka, M. A.; Mitsui, T.; Masuda, R.; Kitao, S.; Kobayashi, Y.; Seto, M.; Yoda, Y.

    2015-05-07

    Measurement of the magnetic hyperfine fields in metallic thin wires under spin Hall conditions was attempted using the emerging technique, synchrotron-radiation Mssbauer spectroscopy. A Mssbauer probe layer of {sup 57}Fe (0.2?nm), {sup 57}Fe (0.6?nm), or {sup 119}Sn (0.6?nm) was embedded as an electron spin detector near the surfaces of V, Au, Pt, and {sup 56}Fe wires. The magnitudes of the magnetic hyperfine fields at the {sup 57}Fe and {sup 119}Sn nuclear sites that could be enhanced by non-equilibrium conduction-electron spin polarization were measured both without and with the application of an electric current along the wire. Changes in the Mssbauer spectra were not clearly observed, indicating that the magnetic hyperfine field induced by non-equilibrium spin polarization is smaller than the detection limit at least for the measured systems and conditions.

  13. Large size GEM for Super Bigbite Spectrometer (SBS) polarimeter for Hall A 12GeV program at JLab

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

    Gnanvo, Kondo; Liyanage, Nilanga; Nelyubin, Vladimir; Saenboonruang, Kiadtisak; Sacher, Seth; Wojtsekhowski, Bogdan

    2015-05-01

    We report on the R&D effort in the design and construction of a large size GEM chamber for the Proton Polarimeter of the Super Bigbite Spectrometer (SBS) in Hall A at Thomas Jefferson National Laboratory (JLab). The SBS Polarimeter trackers consist of two sets of four large chambers of size 200 cm x 60 cm2. Each chamber is a vertical stack of four GEM modules with an active area of 60 cm x 50 cm. We have built and tested several GEM modules and we describe in this paper the design and construction of the final GEM as well asmore » the preliminary results on performances from tests carried out in our detector lab and with test beams at (Fermilab).« less

  14. Intrinsic synchronization of an array of spin-torque oscillators driven by the spin-Hall effect

    SciTech Connect (OSTI)

    Siracusano, G. Puliafito, V.; Giordano, A.; Azzerboni, B.; Finocchio, G.; Tomasello, R.; La Corte, A.; Carpentieri, M.

    2015-05-07

    This paper micromagnetically studies the magnetization dynamics driven by the spin-Hall effect in a Platinum/Permalloy bi-layer. For a certain field and current range, the excitation of a uniform mode, characterized by a power with a spatial distribution in the whole ferromagnetic cross section, is observed. We suggest to use the ferromagnet of the bi-layer as basis for the realization of an array of spin-torque oscillators (STOs): the Permalloy ferromagnet will act as shared free layer, whereas the spacers and the polarizers are built on top of it. Following this strategy, the frequency of the uniform mode will be the same for the whole device, creating an intrinsic synchronization. The synchronization of an array of parallely connected STOs will allow to increase the output power, as necessary for technological applications.

  15. Large size GEM for Super Bigbite Spectrometer (SBS) polarimeter for Hall A 12GeV program at JLab

    SciTech Connect (OSTI)

    Gnanvo, Kondo; Liyanage, Nilanga; Nelyubin, Vladimir; Saenboonruang, Kiadtisak; Sacher, Seth; Wojtsekhowski, Bogdan

    2015-05-01

    We report on the R&D effort in the design and construction of a large size GEM chamber for the Proton Polarimeter of the Super Bigbite Spectrometer (SBS) in Hall A at Thomas Jefferson National Laboratory (JLab). The SBS Polarimeter trackers consist of two sets of four large chambers of size 200 cm x 60 cm2. Each chamber is a vertical stack of four GEM modules with an active area of 60 cm x 50 cm. We have built and tested several GEM modules and we describe in this paper the design and construction of the final GEM as well as the preliminary results on performances from tests carried out in our detector lab and with test beams at (Fermilab).

  16. Cavity Design, Fabrication and Commission Performance of a 750MHz, 4-rod Separator for CEBAF 4-Hall Beam Delivery System

    SciTech Connect (OSTI)

    Wang, Haipeng; Cheng, Guangfeng; Turlington, Larry T.; Wissmann, Mark J.

    2015-09-01

    A short version of the original CEBAF normal conducting 4-rod separator cavity has been developed into a 750MHz one * since the concept of simultaneous 4-hall operation for CEBAF is introduced **. This work has been advanced further based on the EM design optimization, bench measurement and by conducting RF-thermal coupled simulation using CST and ANSYS to confirm the cavity tuning and thermal performance. The cavity fabrication used matured technology like copper plating and machining. The cavity flanges, couplers, tuners and cooling channels adopted consistent/compatible hardware with the existing 500MHz cavities. The electromagnetic and thermal design simulations have greatly reduced the prototyping and bench tuning time of the first prototype. Four production cavities have reached a typical 1.94MV kick voltage or 3.0kW wall loss on each cavity after a minor multipactoring or no processing, 7.5% overhead power than the design specification.

  17. Spin Hall magnetoresistance at Pt/CoFe{sub 2}O{sub 4} interfaces and texture effects

    SciTech Connect (OSTI)

    Isasa, Miren; Bedoya-Pinto, Amilcar; Vlez, Sal; Golmar, Federico; Snchez, Florencio; Fontcuberta, Josep; Hueso, Luis E.; Casanova, Flix

    2014-10-06

    We report magnetoresistance measurements on thin Pt bars grown on epitaxial (001) and (111) CoFe{sub 2}O{sub 4} (CFO) ferrimagnetic insulating films. The results can be described in terms of the recently discovered spin Hall magnetoresistance (SMR). The magnitude of the SMR depends on the interface preparation conditions, being optimal when the Pt/CFO samples are prepared in situ, in a single process. The spin-mixing interface conductance, the key parameter governing SMR and other relevant spin-dependent phenomena, such as spin pumping or spin Seebeck effect, is found to be different depending on the crystallographic orientation of CFO, highlighting the role of the composition and density of magnetic ions at the interface on spin mixing.

  18. NMOCD - Form G-102 - Geothermal Resources Well Location and Acreage...

    Open Energy Info (EERE)

    Jump to: navigation, search OpenEI Reference LibraryAdd to library General: NMOCD - Form G-102 - Geothermal Resources Well Location and Acreage Dedication Plat Author State of New...

  19. Colorado CRS 29-20-108, Location, Construction, or Improvement...

    Open Energy Info (EERE)

    CRS 29-20-108, Location, Construction, or Improvement of Major Electrical or Natural Gas Facilities Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal...

  20. Implementing Rational Surface Locations Measured From Thomson Scattering Into

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

    Implementing Rational Surface Locations Measured From Thomson Scattering Into MSTfit by Curtis A. Johnson Senior Thesis (Physics) at the University of Wisconsin-Madison 2014 i Abstract Measurements of rational surface (RS) locations in the Madison Symmetric Torus as measured by Thomson Scattering (TS) have been implemented in the equilibrium reconstruction program MSTfit. Possible correlated errors between diagnostics show a small impact on the equilibrium reconstruction done by MSTfit. TS RS

  1. Historical Procurement Information - by Location | Department of Energy

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

    Historical Procurement Information - by Location Historical Procurement Information - by Location Small business contracing is difficult to navigate. We've built the Small Business Opportunities Tool to identify historical records of what the Department of Energy has purchased, which you can use to identify likely future opportunities. Use the downloads below to view historical procurement by state. PDF icon California.pdf PDF icon Colorado.pdf PDF icon DistrictColumbia.pdf PDF icon Georgia.pdf

  2. Microfluidic ultrasonic particle separators with engineered node locations

    Office of Scientific and Technical Information (OSTI)

    and geometries (Patent) | SciTech Connect SciTech Connect Search Results Patent: Microfluidic ultrasonic particle separators with engineered node locations and geometries Citation Details In-Document Search Title: Microfluidic ultrasonic particle separators with engineered node locations and geometries An ultrasonic microfluidic system includes a separation channel for conveying a sample fluid containing small particles and large particles, flowing substantially parallel, adjacent to a

  3. Microfluidic ultrasonic particle separators with engineered node locations

    Office of Scientific and Technical Information (OSTI)

    and geometries (Patent) | SciTech Connect Microfluidic ultrasonic particle separators with engineered node locations and geometries Citation Details In-Document Search Title: Microfluidic ultrasonic particle separators with engineered node locations and geometries An ultrasonic microfluidic system includes a separation channel for conveying a sample fluid containing small particles and large particles, flowing substantially parallel, adjacent to a recovery fluid, with which it is in contact.

  4. Microfluidic ultrasonic particle separators with engineered node locations

    Office of Scientific and Technical Information (OSTI)

    and geometries (Patent) | SciTech Connect Microfluidic ultrasonic particle separators with engineered node locations and geometries Citation Details In-Document Search Title: Microfluidic ultrasonic particle separators with engineered node locations and geometries An ultrasonic microfluidic system includes a separation channel for conveying a sample fluid containing small particles and large particles, flowing substantially parallel, adjacent to a recovery fluid, with which it is in contact.

  5. Microfluidic ultrasonic particle separators with engineered node locations

    Office of Scientific and Technical Information (OSTI)

    and geometries (Patent) | SciTech Connect Microfluidic ultrasonic particle separators with engineered node locations and geometries Citation Details In-Document Search Title: Microfluidic ultrasonic particle separators with engineered node locations and geometries × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a public service. Visit OSTI to utilize

  6. Microfluidic ultrasonic particle separators with engineered node locations

    Office of Scientific and Technical Information (OSTI)

    and geometries (Patent) | SciTech Connect Patent: Microfluidic ultrasonic particle separators with engineered node locations and geometries Citation Details In-Document Search Title: Microfluidic ultrasonic particle separators with engineered node locations and geometries × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a public service. Visit OSTI to

  7. Energy, Interior Departments Announce New Location for Solar Decathlon 2011

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

    | Department of Energy Energy, Interior Departments Announce New Location for Solar Decathlon 2011 Energy, Interior Departments Announce New Location for Solar Decathlon 2011 February 23, 2011 - 12:00am Addthis WASHINGTON -- The Department of Energy and the Department of the Interior today announced that the U.S. Department of Energy Solar Decathlon 2011 will be held at the National Mall's West Potomac Park, on the banks of the Potomac River along the path between the Lincoln and Jefferson

  8. The Department's Fleet Vehicle Sustainability Initiatives at Selected Locations

    Energy Savers [EERE]

    Department's Fleet Vehicle Sustainability Initiatives at Selected Locations DOE/IG-0896 October 2013 U.S. Department of Energy Office of Inspector General Office of Audits and Inspections Department of Energy Washington, DC 20585 October 24, 2013 MEMORANDUM FOR THE SECRETARY FROM: Gregory H. Friedman Inspector General SUBJECT: INFORMATION: Audit Report on "The Department's Fleet Vehicle Sustainability Initiatives at Selected Locations" BACKGROUND In Fiscal Year (FY) 2012, the

  9. Predicting threshold and location of laser damage on optical surfaces

    DOE Patents [OSTI]

    Siekhaus, Wigbert

    1987-01-01

    An apparatus useful in the prediction of the damage threshold of various optical devices, the location of weak spots on such devices and the location, identification, and elimination of optical surface impurities comprising, a focused and pulsed laser, an photo electric detector/imaging means, and a timer. The weak spots emit photoelectrons when subjected to laser intensities that are less than the intensity actually required to produce the damage. The weak spots may be eliminated by sustained exposure to the laser beam.

  10. NSO Explores Closure Options for Historic Nuclear Testing Locations

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

    NSO Explores Closure Options for Historic Nuclear Testing Locations Recent environmental restoration work at the Nevada National Security Site (NNSS) focuses on a number of locations that played a part in nuclear weapons testing programs of the 1950s and 60s. Cleanup experts are challenged with studying the nature and extent of the contamination in these areas and implementing the most suitable closure strategies. In the past two years, the U.S Department of Energy, National Nuclear Security

  11. NREL Developed Mobile App for Alternative Fueling Station Locations

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

    Released - News Releases | NREL NREL Developed Mobile App for Alternative Fueling Station Locations Released New application for iPhone helps users find stations offering electricity, biodiesel, natural gas, and other alternative fuels. November 7, 2013 iPhone users now have access to a free application that locates fueling stations offering alternative fuels, including electricity, natural gas, biodiesel, e85 Ethanol, propane and hydrogen. The Energy Department's (DOE) National Renewable

  12. Mobile Truck Stop Electrification Locator Now Available - News Releases |

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

    NREL Mobile Truck Stop Electrification Locator Now Available Truck drivers can find idle reduction facilities using cell phones and PDAs September 15, 2009 The U.S. Department of Energy's (DOE) National Renewable Energy Laboratory (NREL) expanded its suite of Web-based, fuel-efficiency tools by launching the Mobile Truck Stop Electrification Locator. This comprehensive mobile application helps truck drivers find public truck stops with idle reduction facilities using a cell phone,

  13. Impurity-doped optical shock, detonation and damage location sensor

    DOE Patents [OSTI]

    Weiss, Jonathan D.

    1995-01-01

    A shock, detonation, and damage location sensor providing continuous fiber-optic means of measuring shock speed and damage location, and could be designed through proper cabling to have virtually any desired crush pressure. The sensor has one or a plurality of parallel multimode optical fibers, or a singlemode fiber core, surrounded by an elongated cladding, doped along their entire length with impurities to fluoresce in response to light at a different wavelength entering one end of the fiber(s). The length of a fiber would be continuously shorted as it is progressively destroyed by a shock wave traveling parallel to its axis. The resulting backscattered and shifted light would eventually enter a detector and be converted into a proportional electrical signals which would be evaluated to determine shock velocity and damage location. The corresponding reduction in output, because of the shortening of the optical fibers, is used as it is received to determine the velocity and position of the shock front as a function of time. As a damage location sensor the sensor fiber cracks along with the structure to which it is mounted. The size of the resulting drop in detector output is indicative of the location of the crack.

  14. Impurity-doped optical shock, detonation and damage location sensor

    DOE Patents [OSTI]

    Weiss, J.D.

    1995-02-07

    A shock, detonation, and damage location sensor providing continuous fiber-optic means of measuring shock speed and damage location, and could be designed through proper cabling to have virtually any desired crush pressure. The sensor has one or a plurality of parallel multimode optical fibers, or a singlemode fiber core, surrounded by an elongated cladding, doped along their entire length with impurities to fluoresce in response to light at a different wavelength entering one end of the fiber(s). The length of a fiber would be continuously shorted as it is progressively destroyed by a shock wave traveling parallel to its axis. The resulting backscattered and shifted light would eventually enter a detector and be converted into a proportional electrical signals which would be evaluated to determine shock velocity and damage location. The corresponding reduction in output, because of the shortening of the optical fibers, is used as it is received to determine the velocity and position of the shock front as a function of time. As a damage location sensor the sensor fiber cracks along with the structure to which it is mounted. The size of the resulting drop in detector output is indicative of the location of the crack. 8 figs.

  15. Energy Department Announces Denver as Next Location for Solar Decathlon

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

    Competition in 2017 | Department of Energy Denver as Next Location for Solar Decathlon Competition in 2017 Energy Department Announces Denver as Next Location for Solar Decathlon Competition in 2017 March 11, 2016 - 12:01pm Addthis Under Secretary for Science and Energy Dr. Franklin Orr announces Denver as the host city for the 2017 U.S. Department of Energy Solar Decathlon. | Photo courtesy of Ellen Jaskol Under Secretary for Science and Energy Dr. Franklin Orr announces Denver as the host

  16. Method for locating metallic nitride inclusions in metallic alloy ingots

    DOE Patents [OSTI]

    White, Jack C.; Traut, Davis E.; Oden, Laurance L.; Schmitt, Roman A.

    1992-01-01

    A method of determining the location and history of metallic nitride and/or oxynitride inclusions in metallic melts. The method includes the steps of labeling metallic nitride and/or oxynitride inclusions by making a coreduced metallic-hafnium sponge from a mixture of hafnium chloride and the chloride of a metal, reducing the mixed chlorides with magnesium, nitriding the hafnium-labeled metallic-hafnium sponge, and seeding the sponge to be melted with hafnium-labeled nitride inclusions. The ingots are neutron activated and the hafnium is located by radiometric means. Hafnium possesses exactly the proper metallurgical and radiochemical properties for this use.

  17. Predicting threshold and location of laser damage on optical surfaces

    DOE Patents [OSTI]

    Siekhaus, W.

    1985-02-04

    Disclosed is an apparatus useful in the prediction of the damage threshold of various optical devices, the location of weak spots on such devices and the location, identification, and elimination of optical surface impurities. The apparatus comprises a focused and pulsed laser, a photo electric detector/imaging means, and a timer. The weak spots emit photoelectrons when subjected to laser intensities that are less than the intensity actually required to produce the damage. The weak spots may be eliminated by sustained exposure to the laser beam.

  18. Algae Biofuels Co-Location Assessment Tool for Canada

    Energy Science and Technology Software Center (OSTI)

    2011-11-29

    The Algae Biofuels Co-Location Assessment Tool for Canada uses chemical stoichiometry to estimate Nitrogen, Phosphorous, and Carbon atom availability from waste water and carbon dioxide emissions streams, and requirements for those same elements to produce a unit of algae. This information is then combined to find limiting nutrient information and estimate potential productivity associated with waste water and carbon dioxide sources. Output is visualized in terms of distributions or spatial locations. Distances are calculated betweenmore » points of interest in the model using the great circle distance equation, and the smallest distances found by an exhaustive search and sort algorithm.« less

  19. Algae Biofuels Co-Location Assessment Tool for Canada

    SciTech Connect (OSTI)

    2011-11-29

    The Algae Biofuels Co-Location Assessment Tool for Canada uses chemical stoichiometry to estimate Nitrogen, Phosphorous, and Carbon atom availability from waste water and carbon dioxide emissions streams, and requirements for those same elements to produce a unit of algae. This information is then combined to find limiting nutrient information and estimate potential productivity associated with waste water and carbon dioxide sources. Output is visualized in terms of distributions or spatial locations. Distances are calculated between points of interest in the model using the great circle distance equation, and the smallest distances found by an exhaustive search and sort algorithm.

  20. Location, Location, Efficiency

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

    Problem Statement: This project addresses the following challenges, barriers, and knowledge gaps: * Perception that investing in efficiency is too expensive or complicated * ...

  1. TWRS information locator database system administrator`s manual

    SciTech Connect (OSTI)

    Knutson, B.J., Westinghouse Hanford

    1996-09-13

    This document is a guide for use by the Tank Waste Remediation System (TWRS) Information Locator Database (ILD) System Administrator. The TWRS ILD System is an inventory of information used in the TWRS Systems Engineering process to represent the TWRS Technical Baseline. The inventory is maintained in the form of a relational database developed in Paradox 4.5.

  2. Energy Department Announces Student Teams, Location for Solar Decathlon 2015

    Broader source: Energy.gov [DOE]

    At an event today in Irvine, Calif., U.S. Deputy Secretary of Energy Daniel Poneman will announce the 20 collegiate teams selected to compete in the U.S. Department of Energy Solar Decathlon 2015 and unveil the competition’s location.

  3. Dependence of inverse-spin Hall effect and spin-rectified voltage on tantalum thickness in Ta/CoFeB bilayer structure

    SciTech Connect (OSTI)

    Kim, Sang-Il; Seo, Min-Su; Park, Seung-Young; Kim, Dong-Jun; Park, Byong-Guk

    2015-01-19

    Ta-layer thickness (t{sub Ta}) dependence of the measured DC voltage V from the inverse-spin Hall effect (ISHE) in Ta/CoFeB bilayer structure is experimentally investigated using the ferromagnetic resonance in the TE{sub 011} resonant cavity. The ISHE signals excluding the spin-rectified effect (SRE) were separated from the fitted curve of V against t{sub Ta}. For t{sub Ta} ≈ λ{sub Ta} (Ta-spin diffusion length = 2.7 nm), the deviation in ISHE voltage V{sub ISH} between the experimental and theoretical values is significantly increased because of the large SRE contribution, which also results in a large deviation in the spin Hall angle θ{sub SH} (from 10% to 40%). However, when t{sub Ta} ≫ λ{sub Ta}, the V{sub ISH} values are consistent with theoretical values because the SRE terms become negligible, which subsequently improves the accuracy of the obtained θ{sub SH} within 4% deviation. The results will provide an outline for an accurate estimation of the θ{sub SH} for materials with small λ value, which would be useful for utilizing the spin Hall effect in a 3-terminal spintronic devices in which magnetization can be controlled by in-plane current.

  4. Shockley-Read-Hall recombination in pre-filled and photo-filled intermediate band solar cells

    SciTech Connect (OSTI)

    Mayani, Maryam Gholami; Reenaas, Turid Worren

    2014-08-18

    In this work, we study how Shockley-Read-Hall (SRH) recombination via energy levels in the bandgap, caused by defects or impurities, affects the performance of both photo-filled and pre-filled intermediate band solar cells (IBSCs). For a pre-filled cell, the IB is half-filled in equilibrium, while it is empty for the photo-filled cell in equilibrium. The energy level, density, and capture cross-sections of the defects/impurities are varied systematically. We find that the photo-filled cells are, in general, less efficient than pre-filled cells, except when the defect level is between the conduction band and the IB. In that case, for a range of light intensities, the photo-filled cell performs better than the pre-filled. When the defect level is at the same energy as the IB, the efficiency is above 82% of the defect-free case, when less than 50% of the states at the IB lead to SRH recombination. This shows that even if SRH recombination via the IB takes place, high efficiencies can be achieved. We also show that band gap optimization can be used to reduce the SRH recombination.

  5. Berry phase mechanism of the anomalous Hall effect in a disordered two-dimensional magnetic semiconductor structure.

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

    Oveshnikov, L. N.; Kulbachinskii, V. A.; Davydov, A. B.; Aronzon, B. A.; Rozhansky, I. V.; Averkiev, N. S.; Kugel, K. I.; Tripathi, V.

    2015-11-24

    In this study, the anomalous Hall effect (AHE) arises from the interplay of spin-orbit interactions and ferromagnetic order and is a potentially useful probe of electron spin polarization, especially in nanoscale systems where direct measurement is not feasible. While AHE is rather well-understood in metallic ferromagnets, much less is known about the relevance of different physical mechanisms governing AHE in insulators. As ferromagnetic insulators, but not metals, lend themselves to gatecontrol of electron spin polarization, understanding AHE in the insulating state is valuable from the point of view of spintronic applications. Among the mechanisms proposed in the literature for AHEmore » in insulators, the one related to a geometric (Berry) phase effect has been elusive in past studies. The recent discovery of quantized AHE in magnetically doped topological insulators - essentially a Berry phase effect - provides strong additional motivation to undertake more careful search for geometric phase effects in AHE in the magnetic semiconductors. Here we report our experiments on the temperature and magnetic field dependences of AHE in insulating, strongly-disordered two-dimensional Mn delta-doped semiconductor heterostructures in the hopping regime. In particular, it is shown that at sufficiently low temperatures, the mechanism of AHE related to the Berry phase is favoured.« less

  6. Formation of quantum spin Hall state on Si surface and energy gap scaling with strength of spin orbit coupling

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

    Zhou, Miao; Ming, Wenmei; Liu, Zheng; Wang, Zhengfei; Yao, Yugui; Liu, Feng

    2014-11-19

    For potential applications in spintronics and quantum computing, it is desirable to place a quantum spin Hall insulator [i.e., a 2D topological insulator (TI)] on a substrate while maintaining a large energy gap. Here, we demonstrate a unique approach to create the large-gap 2D TI state on a semiconductor surface, based on first-principles calculations and effective Hamiltonian analysis. We show that when heavy elements with strong spin orbit coupling (SOC) such as Bi and Pb atoms are deposited on a patterned H-Si(111) surface into a hexagonal lattice, they exhibit a 2D TI state with a large energy gap of ≥0.5more » eV. The TI state arises from an intriguing substrate orbital filtering effect that selects a suitable orbital composition around the Fermi level, so that the system can be matched onto a four-band effective model Hamiltonian. Furthermore, it is found that within this model, the SOC gap does not increase monotonically with the increasing strength of SOC. These interesting results may shed new light in future design and fabrication of large-gap topological quantum states.« less

  7. 200-Area plateau inactive miscellaneous underground storage tanks locations

    SciTech Connect (OSTI)

    Brevick, C.H.

    1997-12-01

    Fluor Daniel Northwest (FDNW) has been tasked by Lockheed Martin Hanford Corporation (LMHC) to incorporate current location data for 64 of the 200-Area plateau inactive miscellaneous underground storage tanks (IMUST) into the centralized mapping computer database for the Hanford facilities. The IMUST coordinate locations and tank names for the tanks currently assigned to the Hanford Site contractors are listed in Appendix A. The IMUST are inactive tanks installed in underground vaults or buried directly in the ground within the 200-East and 200-West Areas of the Hanford Site. The tanks are categorized as tanks with a capacity of less than 190,000 liters (50,000 gal). Some of the IMUST have been stabilized, pumped dry, filled with grout, or may contain an inventory or radioactive and/or hazardous materials. The IMUST have been out of service for at least 12 years.

  8. Fast Flux Test Facility Asbestos Location Tracking Program

    SciTech Connect (OSTI)

    REYNOLDS, J.A.

    1999-04-13

    Procedure Number HNF-PRO-408, revision 0, paragraph 1.0, ''Purpose,'' and paragraph 2.0, ''Requirements for Facility Management of Asbestos,'' relate building inspection and requirements for documentation of existing asbestos-containing building material (ACBM) per each building assessment. This documentation shall be available to all personnel (including contractor personnel) entering the facility at their request. Corrective action was required by 400 Area Integrated Annual Appraisal/Audit for Fiscal Year 1992 (IAA-92-0007) to provide this notification documentation. No formal method had been developed to communicate the location and nature of ACBM to maintenance personnel in the Fast Flux Test Facility (FFTF) 400 Area. The scope of this Data Package Document is to locate and evaluate any ACBM found at FFTF which constitutes a baseline. This includes all buildings within the protected area. These findings are compiled from earlier reports, numerous work packages and engineering evaluations of employee findings.

  9. Location and identification of radioactive waste in Massachusetts Bay

    SciTech Connect (OSTI)

    Colton, D.P.; Louft, H.L.

    1993-12-31

    The accurate location and identification of hazardous waste materials dumped in the world`s oceans are becoming an increasing concern. For years, the oceans have been viewed as a convenient and economical place to dispose of all types of waste. In all but a few cases, major dump sites have been closed leaving behind years of accumulated debris. The extent of past environmental damage, the possibility of continued environmental damage, and the possibility of hazardous substances reaching the human food chain need to be carefully investigated. This paper reports an attempt to accurately locate and identify the radioactive component of the waste material. The Department of Energy`s Remote Sensing Laboratory (RSL), in support of the US Environmental Protection Agency (EPA), provided the precision navigation system and prototype underwater radiological monitoring equipment that were used during this project. The paper also describes the equipment used, presents the data obtained, and discusses future equipment development.

  10. Sandia National Laboratories: Locations: Albuquerque, New Mexico: Life in

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

    Albuquerque Albuquerque Housing Education Recreation Locations Life in Albuquerque Photo of New Mexico landscape Albuquerque is New Mexico's largest city, with a population of more than 545,000. Immerse yourself in our enormous skies, beautiful vistas, and friendly people. Culture Culture New Mexico's ancient cultural traditions endure in the artwork, adobe architecture, and the people. Mesa photo Outdoors Our weather allows year-round outdoor activities like golfing, skiing, hiking, and

  11. Sandia National Laboratories: Locations: Albuquerque, New Mexico: Visiting

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

    Sandia/New Mexico New Mexico Sandia/New Mexico administration building Access to Sandia's Albuquerque, New Mexico, site is limited to visitors with valid business purposes. Arrangements to visit Sandia must be made beforehand with a sponsoring Sandian. Directions Sandia/New Mexico is located on Kirtland Air Force Base (KAFB) in southeastern Albuquerque. If you are driving, you can easily find us by: Proceeding south from I-40 on Eubank Boulevard, or Proceeding south from I-40 on Wyoming

  12. Sandia National Laboratories: Locations: Livermore, California: Life in

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

    Livermore Livermore Housing Education Recreation Locations Life in Livermore Photo of Livermore countryside The Livermore Valley provides a relaxed lifestyle with good schools and friendly people. With a population of nearly 81,000, the city of Livermore maintains a local personality. Whether you are a sports fan, wine connoisseur, or outdoor enthusiast, you will have plenty to see and do. Pavilion Music The Bay Area is a haven for musicians and artists, with many galleries, concerts, and

  13. Structure for identifying, locating and quantifying physical phenomena

    DOE Patents [OSTI]

    Richardson, John G.

    2006-10-24

    A method and system for detecting, locating and quantifying a physical phenomena such as strain or a deformation in a structure. A minimum resolvable distance along the structure is selected and a quantity of laterally adjacent conductors is determined. Each conductor includes a plurality of segments coupled in series which define the minimum resolvable distance along the structure. When a deformation occurs, changes in the defined energy transmission characteristics along each conductor are compared to determine which segment contains the deformation.

  14. Load cell having strain gauges of arbitrary location

    DOE Patents [OSTI]

    Spletzer, Barry

    2007-03-13

    A load cell utilizes a plurality of strain gauges mounted upon the load cell body such that there are six independent load-strain relations. Load is determined by applying the inverse of a load-strain sensitivity matrix to a measured strain vector. The sensitivity matrix is determined by performing a multivariate regression technique on a set of known loads correlated to the resulting strains. Temperature compensation is achieved by configuring the strain gauges as co-located orthogonal pairs.

  15. Scaled Tests and Modeling of Effluent Stack Sampling Location Mixing

    SciTech Connect (OSTI)

    Recknagle, Kurtis P.; Yokuda, Satoru T.; Ballinger, Marcel Y.; Barnett, J. M.

    2009-02-01

    The Pacific Northwest National Laboratory researchers used a computational fluid dynamics (CFD) computer code to evaluate the mixing at a sampling system location of a research and development facility. The facility requires continuous sampling for radioactive air emissions. Researchers sought to determine whether the location would meet the criteria for uniform air velocity and contaminant concentration as prescribed in the American National Standard Institute (ANSI) standard, Sampling and Monitoring Releases of Airborne Radioactive Substances from the Stacks and Ducts of Nuclear Facilities. Standard ANSI/HPS N13.1-1999 requires that the sampling location be well-mixed and stipulates specific tests (e.g., velocity, gas, and aerosol uniformity and cyclonic flow angle) to verify the extent of mixing.. The exhaust system for the Radiochemical Processing Laboratory was modeled with a CFD code to better understand the flow and contaminant mixing and to predict mixing test results. The CFD results were compared to actual measurements made at a scale-model stack and to the limited data set for the full-scale facility stack. Results indicated that the CFD code provides reasonably conservative predictions for velocity, gas, and aerosol uniformity. Cyclonic flow predicted by the code is less than that measured by the required methods. In expanding from small to full scale, the CFD predictions for full-scale measurements show similar trends as in the scale model and no unusual effects. This work indicates that a CFD code can be a cost-effective aid in design or retrofit of a facilitys stack sampling location that will be required to meet Standard ANSI/HPS N13.1-1999.

  16. X-ray focal spot locating apparatus and method

    DOE Patents [OSTI]

    Gilbert, Hubert W.

    1985-07-30

    An X-ray beam finder for locating a focal spot of an X-ray tube includes a mass of X-ray opaque material having first and second axially-aligned, parallel-opposed faces connected by a plurality of substantially identical parallel holes perpendicular to the faces and a film holder for holding X-ray sensitive film tightly against one face while the other face is placed in contact with the window of an X-ray head.

  17. Location of the essential spectrum in curved quantum layers

    SciTech Connect (OSTI)

    Krejčiřík, David; Lu, Zhiqin

    2014-08-15

    We consider the Dirichlet Laplacian in tubular neighbourhoods of complete non-compact Riemannian manifolds immersed in the Euclidean space. We show that the essential spectrum coincides with the spectrum of a planar tube provided that the second fundamental form of the manifold vanishes at infinity and the transport of the cross-section along the manifold is asymptotically parallel. For low dimensions and codimension, the result applies to the location of propagating states in nanostructures under physically natural conditions.

  18. THE LABORATORY Located in Menlo Park, California, SLAC National

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

    THE LABORATORY Located in Menlo Park, California, SLAC National Accelerator Laboratory is home to some of the world's most cutting-edge technologies, used by researchers worldwide to uncover scientifc mysteries on the smallest and the largest scales-from the workings of the atom to the mysteries of the cosmos. The result has been 50 years of discovery and innovation in both basic and applied science, with tangible benefts for our everyday lives. The following examples highlight some of the roles

  19. Locating PHEV exchange stations in V2G

    SciTech Connect (OSTI)

    Pan, Feng; Bent, Russell; Berscheid, Alan; Izraelevitz, David

    2010-01-01

    Plug-in hybrid electric vehicle (PREV) is an environment friendly modem transportation method and has been rapidly penetrate the transportation system. Renewable energy is another contributor to clean power but the associated intermittence increases the uncertainty in power generation. As a foreseen benefit of a vchicle-to-grid (V2G) system, PREV supporting infrastructures like battery exchange stations can provide battery service to PREV customers as well as being plugged into a power grid as energy sources and stabilizer. The locations of exchange stations are important for these two objectives under constraints from both ,transportation system and power grid. To model this location problem and to understand and analyze the benefit of a V2G system, we develop a two-stage stochastic program to optimally locate the stations prior to the realizations of battery demands, loads, and generation capacity of renewable power sources. Based on this model, we use two data sets to construct the V2G systems and test the benefit and the performance of these systems.

  20. Collection of liquid from below-ground location

    DOE Patents [OSTI]

    Phillips, Steven J.; Alexander, Robert G.

    1995-01-01

    A method of retrieving liquid from a below-ground collection area by permitting gravity flow of the liquid from the collection area to a first closed container; monitoring the level of the liquid in the closed container; and after the liquid reaches a given level in the first closed container, transferring the liquid to a second closed container disposed at a location above the first closed container, via a conduit, by introducing into the first closed container a gas which is substantially chemically inert with respect to the liquid, the gas being at a pressure sufficient to propel the liquid from the first closed container to the second closed container.

  1. Microfluidic ultrasonic particle separators with engineered node locations and geometries

    DOE Patents [OSTI]

    Rose, Klint A; Fisher, Karl A; Wajda, Douglas A; Mariella, Jr., Raymond P; Bailey, Christopher; Dehlinger, Dietrich; Shusteff, Maxim; Jung, Byoungsok; Ness, Kevin D

    2015-03-31

    An ultrasonic microfluidic system includes a separation channel for conveying a sample fluid containing small particles and large particles, flowing substantially parallel, adjacent to a recovery fluid, with which it is in contact. An acoustic transducer produces an ultrasound standing wave, that generates a pressure field having at least one node of minimum, pressure amplitude. An acoustic extension structure is located proximate to said separation channel for positioning said acoustic node off center in said acoustic area and concentrating the large particles in said recovery fluid stream.

  2. Microfluidic ultrasonic particle separators with engineered node locations and geometries

    DOE Patents [OSTI]

    Rose, Klint A; Fisher, Karl A; Wajda, Douglas A; Mariella, Jr., Raymond P; Bailey, Christoppher; Dehlinger, Dietrich; Shusteff, Maxim; Jung, Byoungsok; Ness, Kevin D

    2014-05-20

    An ultrasonic microfluidic system includes a separation channel for conveying a sample fluid containing small particles and large particles, flowing substantially parallel, adjacent to a recovery fluid, with which it is in contact. An acoustic transducer produces an ultrasound standing wave, that generates a pressure field having at least one node of minimum pressure amplitude. An acoustic extension structure is located proximate to said separation channel for positioning said acoustic node off center in said acoustic area and concentrating the large particles in said recovery fluid stream.

  3. Methods, systems and devices for detecting and locating ferromagnetic objects

    DOE Patents [OSTI]

    Roybal, Lyle Gene (Idaho Falls, ID) [Idaho Falls, ID; Kotter, Dale Kent (Shelley, ID) [Shelley, ID; Rohrbaugh, David Thomas (Idaho Falls, ID) [Idaho Falls, ID; Spencer, David Frazer (Idaho Falls, ID) [Idaho Falls, ID

    2010-01-26

    Methods for detecting and locating ferromagnetic objects in a security screening system. One method includes a step of acquiring magnetic data that includes magnetic field gradients detected during a period of time. Another step includes representing the magnetic data as a function of the period of time. Another step includes converting the magnetic data to being represented as a function of frequency. Another method includes a step of sensing a magnetic field for a period of time. Another step includes detecting a gradient within the magnetic field during the period of time. Another step includes identifying a peak value of the gradient detected during the period of time. Another step includes identifying a portion of time within the period of time that represents when the peak value occurs. Another step includes configuring the portion of time over the period of time to represent a ratio.

  4. Location deterministic biosensing from quantum-dot-nanowire assemblies

    SciTech Connect (OSTI)

    Liu, Chao; Kim, Kwanoh; Fan, D. L.

    2014-08-25

    Semiconductor quantum dots (QDs) with high fluorescent brightness, stability, and tunable sizes, have received considerable interest for imaging, sensing, and delivery of biomolecules. In this research, we demonstrate location deterministic biochemical detection from arrays of QD-nanowire hybrid assemblies. QDs with diameters less than 10 nm are manipulated and precisely positioned on the tips of the assembled Gold (Au) nanowires. The manipulation mechanisms are quantitatively understood as the synergetic effects of dielectrophoretic (DEP) and alternating current electroosmosis (ACEO) due to AC electric fields. The QD-nanowire hybrid sensors operate uniquely by concentrating bioanalytes to QDs on the tips of nanowires before detection, offering much enhanced efficiency and sensitivity, in addition to the position-predictable rationality. This research could result in advances in QD-based biomedical detection and inspires an innovative approach for fabricating various QD-based nanodevices.

  5. Collection of liquid from below-ground location

    DOE Patents [OSTI]

    Phillips, S.J.; Alexander, R.G.

    1995-05-30

    A method is described for retrieving liquid from a below-ground collection area by permitting gravity flow of the liquid from the collection area to a first closed container; monitoring the level of the liquid in the closed container; and after the liquid reaches a given level in the first closed container, transferring the liquid to a second closed container disposed at a location above the first closed container, via a conduit, by introducing into the first closed container a gas which is substantially chemically inert with respect to the liquid, the gas being at a pressure sufficient to propel the liquid from the first closed container to the second closed container. 3 figs.

  6. Where the Rubber Meets the Road-- the Alternative Fuel Station Locator

    Broader source: Energy.gov [DOE]

    To use the Alternative Fuel Station Locator, travelers with alternative fuel vehicles just enter their address alternative fuel station locator mobile and pick their fuel.

  7. Workforce Diversity Town Hall

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2011-08-18

    On August 18, 2011, President Obama issued an Executive Order, "Establishing a Coordinated Government-wide Initiative to Promote Diversity and Inclusion in the Federal Workforce," directing federal agencies to develop strategic plans to recruit and retain a more diverse workforce.

  8. Hall A Virtual Tour

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

  9. Hall B Virtual Tour

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

  10. Hall C Virtual Tour

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

  11. Hall_A

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

  12. Hall_B

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

    N∆ Transition Form Factor & Multipoles The CEBAF Large Acceptance Spectrometer (CLAS) www.jlab.org K. Joo et al., Phys. Rev. Lett. 88 (2002) 122001 F.X. Girod et al. (CLAS Collaboration), Phys. Rev. Lett. 100 (2008) 162002 L. El Fassi et al. (CLAS Collaboration), submitted for publication (2011

  13. Hall_C

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

  14. Hall_D

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

    Dudek et al., Hadron Spectrum Collab. PRD 82:034508 (2010)

  15. ACOUSTIC DETECTING AND LOCATING GAS PIPE LINE INFRINGEMENT

    SciTech Connect (OSTI)

    John L. Loth; Gary J. Morris; George M. Palmer; Richard Guiler; Patrick Browning

    2004-10-31

    The extensive network of high-pressure natural gas transmission pipelines covering the United States provides an important infrastructure for our energy independence. Early detection of pipeline leaks and infringements by construction equipment, resulting in corrosion fractures, presents an important aspect of our national security policy. The National Energy Technology Laboratory Strategic Center for Natural Gas (SCVG) is and has been funding research on various applicable techniques. The WVU research team has focused on monitoring pipeline background acoustic signals generated and transmitted by gas flowing through the gas inside the pipeline. In case of a pipeline infringement, any mechanical impact on the pipe wall, or escape of high-pressure gas, generates acoustic signals traveling both up and down stream through the gas. Sudden changes in flow noise are detectable with a Portable Acoustic Monitoring Package (PAMP), developed under this contract. It incorporates a pressure compensating microphone and a signal- recording device. Direct access to the gas inside the line is obtained by mounting such a PAMP, with a 1/2 inch NPT connection, to a pipeline pressure port found near most shut-off valves. An FFT of the recorded signal subtracted by that of the background noise recorded one-second earlier appears to sufficiently isolate the infringement signal to allow source interpretation. Using cell phones for data downloading might allow a network of such 1000-psi rated PAMP's to acoustically monitor a pipeline system and be trained by neural network software to positively identify and locate any pipeline infringement.

  16. ACOUSTIC DETECTING AND LOCATING GAS PIPE LINE INFRINGEMENT

    SciTech Connect (OSTI)

    John L. Loth; Gary J. Morris; George M. Palmer; Richard Guiler; Patrick Browning

    2004-12-01

    The extensive network of high-pressure natural gas transmission pipelines covering the United States provides an important infrastructure for our energy independence. Early detection of pipeline leaks and infringements by construction equipment, resulting in corrosion fractures, presents an important aspect of our national security policy. The National Energy Technology Laboratory Strategic Center for Natural Gas (SCVG) is and has been funding research on various applicable techniques. The WVU research team has focused on monitoring pipeline background acoustic signals generated and transmitted by gas flowing through the gas inside the pipeline. In case of a pipeline infringement, any mechanical impact on the pipe wall, or escape of high-pressure gas, generates acoustic signals traveling both up and down stream through the gas. Sudden changes in flow noise are detectable with a Portable Acoustic Monitoring Package (PAMP), developed under this contract. It incorporates a pressure compensating microphone and a signal- recording device. Direct access to the gas inside the line is obtained by mounting such a PAMP, with a 1/2 inch NPT connection, to a pipeline pressure port found near most shut-off valves. An FFT of the recorded signal subtracted by that of the background noise recorded one-second earlier appears to sufficiently isolate the infringement signal to allow source interpretation. Using cell phones for data downloading might allow a network of such 1000-psi rated PAMP's to acoustically monitor a pipeline system and be trained by neural network software to positively identify and locate any pipeline infringement.

  17. Noise pair velocity and range echo location system

    DOE Patents [OSTI]

    Erskine, D.J.

    1999-02-16

    An echo-location method for microwaves, sound and light capable of using incoherent and arbitrary waveforms of wide bandwidth to measure velocity and range (and target size) simultaneously to high resolution is disclosed. Two interferometers having very long and nearly equal delays are used in series with the target interposed. The delays can be longer than the target range of interest. The first interferometer imprints a partial coherence on an initially incoherent source which allows autocorrelation to be performed on the reflected signal to determine velocity. A coherent cross-correlation subsequent to the second interferometer with the source determines a velocity discriminated range. Dithering the second interferometer identifies portions of the cross-correlation belonging to a target apart from clutter moving at a different velocity. The velocity discrimination is insensitive to all slowly varying distortions in the signal path. Speckle in the image of target and antenna lobing due to parasitic reflections is minimal for an incoherent source. An arbitrary source which varies its spectrum dramatically and randomly from pulse to pulse creates a radar elusive to jamming. Monochromatic sources which jigger in frequency from pulse to pulse or combinations of monochromatic sources can simulate some benefits of incoherent broadband sources. Clutter which has a symmetrical velocity spectrum will self-cancel for short wavelengths, such as the apparent motion of ground surrounding target from a sidelooking airborne antenna. 46 figs.

  18. Noise pair velocity and range echo location system

    DOE Patents [OSTI]

    Erskine, David J.

    1999-01-01

    An echo-location method for microwaves, sound and light capable of using incoherent and arbitrary waveforms of wide bandwidth to measure velocity and range (and target size) simultaneously to high resolution. Two interferometers having very long and nearly equal delays are used in series with the target interposed. The delays can be longer than the target range of interest. The first interferometer imprints a partial coherence on an initially incoherent source which allows autocorrelation to be performed on the reflected signal to determine velocity. A coherent cross-correlation subsequent to the second interferometer with the source determines a velocity discriminated range. Dithering the second interferometer identifies portions of the cross-correlation belonging to a target apart from clutter moving at a different velocity. The velocity discrimination is insensitive to all slowly varying distortions in the signal path. Speckle in the image of target and antenna lobing due to parasitic reflections is minimal for an incoherent source. An arbitrary source which varies its spectrum dramatically and randomly from pulse to pulse creates a radar elusive to jamming. Monochromatic sources which jigger in frequency from pulse to pulse or combinations of monochromatic sources can simulate some benefits of incoherent broadband sources. Clutter which has a symmetrical velocity spectrum will self-cancel for short wavelengths, such as the apparent motion of ground surrounding target from a sidelooking airborne antenna.

  19. The Effect of Ionospheric Models on Electromagnetic Pulse Locations

    SciTech Connect (OSTI)

    Fenimore, Edward E.; Triplett, Laurie A.

    2014-07-01

    Locations of electromagnetic pulses (EMPs) determined by time-of-arrival (TOA) often have outliers with significantly larger errors than expected. In the past, these errors were thought to arise from high order terms in the Appleton-Hartree equation. We simulated 1000 events randomly spread around the Earth into a constellation of 22 GPS satellites. We used four different ionospheres: simple where the time delay goes as the inverse of the frequency-squared, full Appleton-Hartree, the BobRD integrals and a full raytracing code. The simple and full Appleton-Hartree ionospheres do not show outliers whereas the BobRD and raytracing do. This strongly suggests that the cause of the outliers is not additional terms in the Appleton-Hartree equation, but rather is due to the additional path length due to refraction. A method to fix the outliers is suggested based on fitting a time to the delays calculated at the 5 GPS frequencies with BobRD and simple ionospheres. The difference in time is used as a correction to the TOAs.

  20. Micro-focused Brillouin light scattering study of the magnetization dynamics driven by Spin Hall effect in a transversely magnetized NiFe nanowire

    SciTech Connect (OSTI)

    Madami, M. Carlotti, G.; Gubbiotti, G.; Tacchi, S.; Siracusano, G.; Finocchio, G.; Carpentieri, M.

    2015-05-07

    We employed micro-focused Brillouin light scattering to study the amplification of the thermal spin wave eigenmodes by means of a pure spin current, generated by the spin-Hall effect, in a transversely magnetized Pt(4 nm)/NiFe(4 nm)/SiO{sub 2}(5 nm) layered nanowire with lateral dimensions 500 × 2750 nm{sup 2}. The frequency and the cross section of both the center (fundamental) and the edge spin wave modes have been measured as a function of the intensity of the injected dc electric current. The frequency of both modes exhibits a clear redshift while their cross section is greatly enhanced on increasing the intensity of the injected dc. A threshold-like behavior is observed for a value of the injected dc of 2.8 mA. Interestingly, an additional mode, localized in the central part of the nanowire, appears at higher frequency on increasing the intensity of the injected dc above the threshold value. Micromagnetic simulations were used to quantitatively reproduce the experimental results and to investigate the complex non-linear dynamics induced by the spin-Hall effect, including the modification of the spatial profile of the spin wave modes and the appearance of the extra mode above the threshold.

  1. Joint Urban 2003: Study Overview And Instrument Locations

    SciTech Connect (OSTI)

    Allwine, K Jerry; Flaherty, Julia E.

    2006-08-16

    Quality-assured meteorological and tracer data sets are vital for establishing confidence that indoor and outdoor dispersion models used to simulate dispersal of potential toxic agents in urban atmospheres are giving trustworthy results. The U.S. Department of Defense-Defense Threat Reduction Agency and the U.S. Department of Homeland Security joined together to conduct the Joint Urban 2003 atmospheric dispersion study to provide this critically-needed high-resolution dispersion data. This major urban study was conducted from June 28 through July 31, 2003, in Oklahoma City, Oklahoma, with the participation of over 150 scientists and engineers from over 20 U.S. and foreign institutions. The Joint Urban 2003 lead scientist was Jerry Allwine (Pacific Northwest National Laboratory) who oversaw study design, logistical arrangements and field operations with the help of Joe Shinn (Lawrence Livermore National Laboratory), Marty Leach (Lawrence Livermore National Laboratory), Ray Hosker (Atmospheric Turbulence and Diffusion Division), Leo Stockham (Northrop Grumman Information Technology) and Jim Bowers (Dugway Proving Grounds). This report gives a brief overview of the field campaign, describing the scientific objectives, the dates of the intensive observation periods, and the instruments deployed. The data from this field study is available to the scientific community through an on-line database that is managed by Dugway Proving Ground. This report will be included in the database to provide its users with some general information about the field study, and specific information about the instrument coordinates. Appendix A of this document provides the definitive record of the instrument locations during this field campaign, and Appendix B lists all the study principal investigators and participants.

  2. Location standards for RCRA Treatment, Storage, and Disposal Facilities (TSDFs). RCRA Information Brief

    SciTech Connect (OSTI)

    Not Available

    1993-10-01

    This bulletin describes RCRA location standards for hazardous waste storage and disposal facilities.

  3. Single-valley quantum Hall ferromagnet in a dilute MgxZn1-xO/ZnO strongly correlated two-dimensional electron system

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

    Kozuka, Y.; Tsukazaki, A.; Maryenko, D.; Falson, J.; Bell, C.; Kim, M.; Hikita, Y.; Hwang, H. Y.; Kawasaki, M.

    2012-02-03

    We investigate the spin susceptibility (g*m*) of dilute two-dimensional (2D) electrons confined at the MgxZn1-xO/ZnO heterointerface. Magnetotransport measurements show a four-fold enhancement of g*m*, dominated by the increase in the Landé g-factor. The g-factor enhancement leads to a ferromagnetic instability of the electron gas as evidenced by sharp resistance spikes. At high magnetic field, the large g*m* leads to full spin polarization, where we found sudden increase in resistance around the filling factors of half-integer, accompanied by complete disappearance of fractional quantum Hall (QH) states. Along with its large effective mass and the high electron mobility, our result indicates thatmore » the ZnO 2D system is ideal for investigating the effect of electron correlations in the QH regime.« less

  4. First-principles study on the relationship between magnetic anisotropy and anomalous Hall effect of bct-Fe{sub 50}Co{sub 50}

    SciTech Connect (OSTI)

    Hyodo, Kazushige Sakuma, Akimasa; Kota, Yohei

    2014-05-07

    We studied quantitative relationship between the intrinsic anomalous Hall conductivity (σ{sub xy}) and the uniaxial magnetic anisotropy constant (K{sub u}) of bct-Fe{sub 50}Co{sub 50} using first-principles calculation because these quantities originate from spin-orbit interaction. We found that the obtained σ{sub xy} and K{sub u} with changing the axial ratio c/a (1≤c/a≤√(2)) exhibit similar behavior mainly arising from the common band mixing of the minority-spin d{sub xy} and d{sub x{sup 2}−y{sup 2}} states near the Fermi level which is sensitive to c/a.

  5. Highly tunable quantum Hall far-infrared photodetector by use of GaAs/Al{sub x}Ga{sub 1?x}As-graphene composite material

    SciTech Connect (OSTI)

    Tang, Chiu-Chun [Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Ling, D. C. [Department of Physics, Tamkang University, Tamsui Dist., New Taipei City 25137, Taiwan (China); Chi, C. C.; Chen, Jeng-Chung [Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan (China)

    2014-11-03

    We have developed a highly tunable, narrow band far-infrared (FIR) photodetector which utilizes the characteristic merits of graphene and two-dimensional electron gas (2DEG) in GaAs/Al{sub x}Ga{sub 1?x}As heterostructure in the Quantum Hall states (QHS). The heterostructure surface is covered with chemical vapor-deposited graphene, which functions as a transparent top-gate to vary the electron density of the 2DEG. FIR response observed in the vicinity of integer QH regime can be effectively tuned in a wide range of 27102?cm{sup ?1} with a bias voltage less than ?1?V. In addition, we have found that the presence of graphene can genuinely modulate the photoresponse. Our results demonstrate a promising direction for realizing a tunable long-wavelength FIR detector using QHS in GaAs 2DEG/ graphene composite material.

  6. Observation of the inverse spin Hall effect in ZnO thin films: An all-electrical approach to spin injection and detection

    SciTech Connect (OSTI)

    Prestgard, Megan C.; Tiwari, Ashutosh

    2014-03-24

    The inverse spin Hall effect (ISHE) is a newly discovered, quantum mechanical phenomenon where an applied spin current results in the generation of an electrical voltage in the transverse direction. It is anticipated that the ISHE can provide a more simple way of measuring spin currents in spintronic devices. The ISHE was first observed in noble metals that exhibit strong spin-orbit coupling. However, recently, the ISHE has been detected in conventional semiconductors (such as Si and Ge), which possess weak spin-orbit coupling. This suggests that large-spin orbit coupling is not a requirement for observing the ISHE. In this paper, we are reporting the observation of the ISHE in an alternative semiconductor material, zinc oxide (ZnO) using all-electrical means. In our study, we found that when a spin-polarized current is injected into the ZnO film from a NiFe ferromagnetic injector via an MgO tunnel barrier layer, a voltage transverse to both the direction of the current as well as its spin-polarization is generated in the ZnO layer. The polarity of this voltage signal was found to flip on reversing the direction of the injected current as well as on reversing the polarization of the current, consistent with the predictions of the ISHE process. Through careful analysis of the ISHE data, we determined a spin-Hall angle of approximately 1.651 × 10{sup −2} for ZnO, which is two orders of magnitude higher than that of silicon. Observation of a detectable room-temperature ISHE signal in ZnO via electrical injection and detection is a groundbreaking step that opens a path towards achieving transparent spin detectors for next-generation spintronic device technology.

  7. Validation of Innovative Exploration Technologies for Newberry Volcano: Drill Site Location Map 2010

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jaffe, Todd

    2012-01-01

    Newberry project drill site location map 2010. Once the exploration mythology is validated, it can be applied throughout the Cascade Range and elsewhere to locate and develop blind geothermal resources.

  8. Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010

    Office of Scientific and Technical Information (OSTI)

    (Dataset) | Data Explorer Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010 Title: Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010 Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010. ArcGIS map package containing topographic base map, Township and Range layer, Oski BLM and private leases at time of survey, and locations, with selected shot points, of the five seismic lines. Authors: Michael Lane Publication Date: 2010-01-01

  9. Locations of Smart Grid Demonstration and Large-Scale Energy Storage

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

    Projects | Department of Energy Locations of Smart Grid Demonstration and Large-Scale Energy Storage Projects Locations of Smart Grid Demonstration and Large-Scale Energy Storage Projects Map of the United States showing the location of all projects created with funding from the Smart Grid Demonstration and Energy Storage Project, funded through the American Recovery and Reinvestment Act. PDF icon Locations of Smart Grid Demonstration and Large-Scale Energy Storage Projects More Documents

  10. Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Lane, Michael

    Location of seismic lines carried out under DOE funded project Advanced Seismic Data Analysis Program (The Hot Pot Project).

  11. Alternative Fuels Data Center: U.S. Truck Stop Electrification Locations

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

    Conserve Fuel Printable Version Share this resource Send a link to Alternative Fuels Data Center: U.S. Truck Stop Electrification Locations to someone by E-mail Share Alternative Fuels Data Center: U.S. Truck Stop Electrification Locations on Facebook Tweet about Alternative Fuels Data Center: U.S. Truck Stop Electrification Locations on Twitter Bookmark Alternative Fuels Data Center: U.S. Truck Stop Electrification Locations on Google Bookmark Alternative Fuels Data Center: U.S. Truck Stop

  12. Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Lane, Michael

    2012-01-01

    Location of seismic lines carried out under DOE funded project Advanced Seismic Data Analysis Program (The Hot Pot Project).

  13. IARC - Illinois Accelerator Research Center | Pilot Program | Agenda

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

    Who should attend? Agenda Time Description Speakers 8-8:30 AM Registration, coffee, rolls, networking opportunity (Wilson Hall atrium) Plenary session (Wilson Hall, One West conference room) Time Description Speakers 8:30-8:50 AM Current and future accelerator applications Director Nigel Lockyer, Fermilab 8:50-9:15 AM Leveraging lab-university-industry partnerships Assistant Director Andria Winters, Illinois DCEO 9:15-9:35 AM DOE Accelerator Stewardship Pilot Program Stewardship Program Director

  14. Ames Lab 101: C6: Virtual Engineering

    ScienceCinema (OSTI)

    None

    2012-08-29

    Ames Laboratory scientist Doug McCorkle explains the importance of virtual engineering and talks about the C6. The C6 is a three-dimensional, fully-immersive synthetic environment residing in the center atrium of Iowa State University's Howe Hall.

  15. Win-Win Opportunities at the Sixth Annual U.S.-China Energy Efficiency Forum

    Broader source: Energy.gov [DOE]

    The Atrium Hall of the Ronald Reagan Building was abuzz with excitement as more than 200 government, industry, and NGO leaders from the U.S. and China met together on October 23rd the annual U.S.-China Energy Efficiency Forum (EEF).

  16. Location | JCESR

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

    Road, immediately south of I-55. Follow Northgate Road to the Argonne Information Center. To reach Argonne from Midway Airport, take Cicero Avenue north to I-55. Enter I-55 south...

  17. Location Map

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Lane, Michael

    Map file package containing shaded relief base with Hot Pot project area, major roads, railroads, and rivers. The inset map shows regional Paleozoic structural elements.

  18. Location Map

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Lane, Michael

    2013-06-27

    Map file package containing shaded relief base with Hot Pot project area, major roads, railroads, and rivers. The inset map shows regional Paleozoic structural elements.

  19. Locations of Spent Nuclear Fuel and High-Level Radioactive Waste |

    Energy Savers [EERE]

    Industrial Assessment Centers (IACs) » Locations of Industrial Assessment Centers Locations of Industrial Assessment Centers To apply for an assessment, contact one of the 24 schools across the country that currently participate in the IAC Program. Click on a university name below for contact information for each location. Map of participating schools West Oregon State University San Diego State University San Francisco State University Boise State University Midwest Bradley University Indiana

  20. Population Sensitivity Evaluation of Two Candidate Locations for Possible Small Modular Reactor Siting

    Broader source: Energy.gov [DOE]

    Population Sensitivity Evaluation of Two Candidate Locations for Possible Small Modular Reactor Siting ORNL/TM-2014/300 August 2014

  1. EIA - Natural Gas Pipeline Network - Natural Gas Import/Export Locations

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

    List Pipelines > Import/Export Location List About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Currently, there are 58 locations at which natural gas can be exported or imported into the United States, including 9 LNG (liquefied natural gas) facilities in the continental United States and Alaska (There is a tenth U.S. LNG import facility located in Puerto Rico). At 28 of these locations natural gas or LNG currently can only

  2. Locating an active fault zone in Coso geothermal field by analyzing...

    Open Energy Info (EERE)

    waves from microearthquake data Abstract Active fault systems usually provide high-permeability channels for hydrothermal outflow in geothermal fields. Locating such fault systems...

  3. 7Li MRI of Li batteries reveals location of microstructural lithium...

    Office of Scientific and Technical Information (OSTI)

    Title: 7Li MRI of Li batteries reveals location of microstructural lithium Authors: Chandrashekar, S. ; Trease, Nicole M. ; Chang, Hee Jung ; Du, Lin-Shu ; Grey, Clare P. ; ...

  4. Request for Information: Operation of Regional Test Center Test Bed Located at SolarTAC

    Broader source: Energy.gov [DOE]

    Solicitation Title:  Request for Information: Operation of Regional Test Center Test Bed Located at SolarTAC

  5. Measurement of XeI and XeII velocity in the near exit plane of a low-power Hall effect thruster by light induced fluorescence spectroscopy

    SciTech Connect (OSTI)

    Dancheva, Y.; Biancalana, V.; Pagano, D.; Scortecci, F.

    2013-06-15

    Near exit plane non-resonant light induced fluorescence spectroscopy is performed in a Hall effect low-power Xenon thruster at discharge voltage of 250 V and anode flow rate of 0.7 mg/s. Measurements of the axial and radial velocity components are performed, exciting the 6s{sup 2}[3/2]{sub 2}{sup o}{yields}6p{sup 2}[3/2]{sub 2} transition at 823.16 nm in XeI and the 5d[4]{sub 7/2}{yields}6p[3]{sub 5/2}{sup o} transition at 834.724 nm in XeII. No significant deviation from the thermal velocity is observed for XeI. Two most probable ion velocities are registered at a given position with respect to the thruster axis, which are mainly attributed to different areas of creation of ions inside the acceleration channel. The spatial resolution of the set-up is limited by the laser beam size (radius of the order of 0.5 mm) and the fluorescence collection optics, which have a view spot diameter of 8 mm.

  6. Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Michael Lane

    Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010. ArcGIS map package containing topographic base map, Township and Range layer, Oski BLM and private leases at time of survey, and locations, with selected shot points, of the five seismic lines.

  7. Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Michael Lane

    2010-01-01

    Seismic Line Location Map Hot Pot Project, Humboldt County, Nevada 2010. ArcGIS map package containing topographic base map, Township and Range layer, Oski BLM and private leases at time of survey, and locations, with selected shot points, of the five seismic lines.

  8. DOE - Office of Legacy Management -- Berkeley CA Site - CA 03

    Office of Legacy Management (LM)

    FUSRAP Considered Sites Berkeley, CA Alternate Name(s): University of California Gilman Hall, University of California CA.03-1 Location: Gilman Hall, University of California, ...

  9. Poynting-vector based method for determining the bearing and location of electromagnetic sources

    DOE Patents [OSTI]

    Simons, David J.; Carrigan, Charles R.; Harben, Philip E.; Kirkendall, Barry A.; Schultz, Craig A.

    2008-10-21

    A method and apparatus is utilized to determine the bearing and/or location of sources, such as, alternating current (A.C.) generators and loads, power lines, transformers and/or radio-frequency (RF) transmitters, emitting electromagnetic-wave energy for which a Poynting-Vector can be defined. When both a source and field sensors (electric and magnetic) are static, a bearing to the electromagnetic source can be obtained. If a single set of electric (E) and magnetic (B) sensors are in motion, multiple measurements permit location of the source. The method can be extended to networks of sensors allowing determination of the location of both stationary and moving sources.

  10. EIA - Natural Gas Pipeline Network - Natural Gas Import/Export Locations

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

    Map Export Pipelines > Import/Export Locations Map About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates U.S. Natural Gas Import/Export Locations, as of the end of 2008 Natural Gas Import and Export Locations Source: Energy Information Administration, Office of Oil and Gas, Natural Gas Division, Imports/Export Points Database. The EIA has determined that the informational map displays here do not raise security concerns, based

  11. Net PV Value by location and building type | Open Energy Information

    Open Energy Info (EERE)

    location and building type Jump to: navigation, search Impact of Utility Rates on PV Economics Solar value table: The following table shows the solar value (in kWh) found for...

  12. Methods for the Precise Locating and Forming of Arrays of Curved Features into a Workpiece

    DOE Patents [OSTI]

    Gill, David Dennis; Keeler, Gordon A.; Serkland, Darwin K.; Mukherjee, Sayan D.

    2008-10-14

    Methods for manufacturing high precision arrays of curved features (e.g. lenses) in the surface of a workpiece are described utilizing orthogonal sets of inter-fitting locating grooves to mate a workpiece to a workpiece holder mounted to the spindle face of a rotating machine tool. The matching inter-fitting groove sets in the workpiece and the chuck allow precisely and non-kinematically indexing the workpiece to locations defined in two orthogonal directions perpendicular to the turning axis of the machine tool. At each location on the workpiece a curved feature can then be on-center machined to create arrays of curved features on the workpiece. The averaging effect of the corresponding sets of inter-fitting grooves provide for precise repeatability in determining, the relative locations of the centers of each of the curved features in an array of curved features.

  13. Topographic and Air-Photo Lineaments in Various Locations Related to Geothermal Exploration in Colorado

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Zehner, Richard

    2012-02-01

    These shapefiles was constructed as an aid to geothermal exploration in preparation for a site visit for field checking. We make no claims as to the existence of the lineaments, their location, orientation, and/or nature.

  14. Microwave determination of location and speed of an object inside a pipe

    DOE Patents [OSTI]

    Sinha, Dipen N.

    2010-12-14

    Apparatus and method are described for measuring the location and speed of an object, such as instrumentation on a movable platform, disposed within a pipe, using continuous-wave, amplitude-modulated microwave radiation.

  15. Age and location of volcanic centers less than or equal to 3...

    Office of Scientific and Technical Information (OSTI)

    age, are shown. Location of the volcanic vents and rocks were taken from Luedke and Smith (1978). Ages were obtained from the original literature in all cases except for McKee...

  16. 17 NMAC 9.592 - Location of Large Capacity Plants and Transmission...

    Open Energy Info (EERE)

    NMAC 9.592 - Location of Large Capacity Plants and Transmission Lines Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- RegulationRegulation: 17...

  17. Property:Types of Co-located facilities | Open Energy Information

    Open Energy Info (EERE)

    25 pages using this property. (previous 25) (next 25) A Alden Large Flume + Co-located fish holding facility is ideal for evaluating the impacts of generation devices on fish...

  18. Enhancement of the visibility of objects located below the surface of a scattering medium

    DOE Patents [OSTI]

    Demos, Stavros

    2013-11-19

    Techniques are provided for enhancing the visibility of objects located below the surface of a scattering medium such as tissue, water and smoke. Examples of such an object include a vein located below the skin, a mine located below the surface of the sea and a human in a location covered by smoke. The enhancement of the image contrast of a subsurface structure is based on the utilization of structured illumination. In the specific application of this invention to image the veins in the arm or other part of the body, the issue of how to control the intensity of the image of a metal object (such as a needle) that must be inserted into the vein is also addressed.

  19. Topographic and Air-Photo Lineaments in Various Locations Related to Geothermal Exploration in Colorado

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Zehner, Richard

    These shapefiles was constructed as an aid to geothermal exploration in preparation for a site visit for field checking. We make no claims as to the existence of the lineaments, their location, orientation, and/or nature.

  20. Bioethanol Co-Location Study: August 15, 2000 - February 28, 2002

    SciTech Connect (OSTI)

    Morris, G.

    2002-11-01

    This report describes the results of an analysis of the generic economic feasibility of co-locating ethanol production facilities with California biomass power plants, and with coal-fired power plants in the Southwest.

  1. Apparatus for detecting a magnetic anomaly contiguous to remote location by squid gradiometer and magnetometer systems

    DOE Patents [OSTI]

    Overton, Jr., William C.; Steyert, Jr., William A.

    1984-01-01

    A superconducting quantum interference device (SQUID) magnetic detection apparatus detects magnetic fields, signals, and anomalies at remote locations. Two remotely rotatable SQUID gradiometers may be housed in a cryogenic environment to search for and locate unambiguously magnetic anomalies. The SQUID magnetic detection apparatus can be used to determine the azimuth of a hydrofracture by first flooding the hydrofracture with a ferrofluid to create an artificial magnetic anomaly therein.

  2. Review of the Physical Science Facility Stack Air Sampling Probe Locations

    SciTech Connect (OSTI)

    Glissmeyer, John A.

    2007-09-30

    This letter report reviews compliance of the current design of the Physical Science Facility (PSF) stack air sampling locations with the ANSI/HPS N13.1-1999 standard. The review was based on performance criteria used for locating air sampling probes, the design documents provided and available information on systems previously tested for compliance with the criteria. Recommendations are presented for ways to bring the design into compliance with the requirements for the sampling probe placement.

  3. A reciprocal space approach for locating symmetry elements in Patterson superposition maps

    SciTech Connect (OSTI)

    Hendrixson, T.

    1990-09-21

    A method for determining the location and possible existence of symmetry elements in Patterson superposition maps has been developed. A comparison of the original superposition map and a superposition map operated on by the symmetry element gives possible translations to the location of the symmetry element. A reciprocal space approach using structure factor-like quantities obtained from the Fourier transform of the superposition function is then used to determine the best'' location of the symmetry element. Constraints based upon the space group requirements are also used as a check on the locations. The locations of the symmetry elements are used to modify the Fourier transform coefficients of the superposition function to give an approximation of the structure factors, which are then refined using the EG relation. The analysis of several compounds using this method is presented. Reciprocal space techniques for locating multiple images in the superposition function are also presented, along with methods to remove the effect of multiple images in the Fourier transform coefficients of the superposition map. In addition, crystallographic studies of the extended chain structure of (NHC{sub 5}H{sub 5})SbI{sub 4} and of the twinning method of the orthorhombic form of the high-{Tc} superconductor YBa{sub 2}Cu{sub 3}O{sub 7-x} are presented. 54 refs.

  4. Validation of Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled and seismic test 2012

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jaffe, Todd

    2012-01-01

    Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled & seismic test, 2012

  5. Validation of Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled and seismic test 2012

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jaffe, Todd

    Innovative Exploration Technologies for Newberry Volcano: Map showing location of wells permitted, drilled & seismic test, 2012

  6. Method of locating related items in a geometric space for data mining

    DOE Patents [OSTI]

    Hendrickson, Bruce A.

    1999-01-01

    A method for locating related items in a geometric space transforms relationships among items to geometric locations. The method locates items in the geometric space so that the distance between items corresponds to the degree of relatedness. The method facilitates communication of the structure of the relationships among the items. The method is especially beneficial for communicating databases with many items, and with non-regular relationship patterns. Examples of such databases include databases containing items such as scientific papers or patents, related by citations or keywords. A computer system adapted for practice of the present invention can include a processor, a storage subsystem, a display device, and computer software to direct the location and display of the entities. The method comprises assigning numeric values as a measure of similarity between each pairing of items. A matrix is constructed, based on the numeric values. The eigenvectors and eigenvalues of the matrix are determined. Each item is located in the geometric space at coordinates determined from the eigenvectors and eigenvalues. Proper construction of the matrix and proper determination of coordinates from eigenvectors can ensure that distance between items in the geometric space is representative of the numeric value measure of the items' similarity.

  7. Method of locating related items in a geometric space for data mining

    DOE Patents [OSTI]

    Hendrickson, B.A.

    1999-07-27

    A method for locating related items in a geometric space transforms relationships among items to geometric locations. The method locates items in the geometric space so that the distance between items corresponds to the degree of relatedness. The method facilitates communication of the structure of the relationships among the items. The method is especially beneficial for communicating databases with many items, and with non-regular relationship patterns. Examples of such databases include databases containing items such as scientific papers or patents, related by citations or keywords. A computer system adapted for practice of the present invention can include a processor, a storage subsystem, a display device, and computer software to direct the location and display of the entities. The method comprises assigning numeric values as a measure of similarity between each pairing of items. A matrix is constructed, based on the numeric values. The eigenvectors and eigenvalues of the matrix are determined. Each item is located in the geometric space at coordinates determined from the eigenvectors and eigenvalues. Proper construction of the matrix and proper determination of coordinates from eigenvectors can ensure that distance between items in the geometric space is representative of the numeric value measure of the items' similarity. 12 figs.

  8. Method for tracking the location of mobile agents using stand-off detection technique

    DOE Patents [OSTI]

    Schmitt, Randal L.; Bender, Susan Fae Ann; Rodacy, Philip J.; Hargis, Jr., Philip J.; Johnson, Mark S.

    2006-12-26

    A method for tracking the movement and position of mobile agents using light detection and ranging (LIDAR) as a stand-off optical detection technique. The positions of the agents are tracked by analyzing the time-history of a series of optical measurements made over the field of view of the optical system. This provides a (time+3-D) or (time+2-D) mapping of the location of the mobile agents. Repeated pulses of a laser beam impinge on a mobile agent, such as a bee, and are backscattered from the agent into a LIDAR detection system. Alternatively, the incident laser pulses excite fluorescence or phosphorescence from the agent, which is detected using a LIDAR system. Analysis of the spatial location of signals from the agents produced by repeated pulses generates a multidimensional map of agent location.

  9. Method for locating underground anomalies by diffraction of electromagnetic waves passing between spaced boreholes

    DOE Patents [OSTI]

    Lytle, R. Jeffrey; Lager, Darrel L.; Laine, Edwin F.; Davis, Donald T.

    1979-01-01

    Underground anomalies or discontinuities, such as holes, tunnels, and caverns, are located by lowering an electromagnetic signal transmitting antenna down one borehole and a receiving antenna down another, the ground to be surveyed for anomalies being situated between the boreholes. Electronic transmitting and receiving equipment associated with the antennas is activated and the antennas are lowered in unison at the same rate down their respective boreholes a plurality of times, each time with the receiving antenna at a different level with respect to the transmitting antenna. The transmitted electromagnetic waves diffract at each edge of an anomaly. This causes minimal signal reception at the receiving antenna. Triangulation of the straight lines between the antennas for the depths at which the signal minimums are detected precisely locates the anomaly. Alternatively, phase shifts of the transmitted waves may be detected to locate an anomaly, the phase shift being distinctive for the waves directed at the anomaly.

  10. Transmission Benefits of Co-Locating Concentrating Solar Power and Wind

    SciTech Connect (OSTI)

    Sioshansi, R.; Denholm, P.

    2012-03-01

    In some areas of the U.S. transmission constraints are a limiting factor in deploying new wind and concentrating solar power (CSP) plants. Texas is an example of one such location, where the best wind and solar resources are in the western part of the state, while major demand centers are in the east. The low capacity factor of wind is a compounding factor, increasing the relative cost of new transmission per unit of energy actually delivered. A possible method of increasing the utilization of new transmission is to co-locate both wind and concentrating solar power with thermal energy storage. In this work we examine the benefits and limits of using the dispatachability of thermal storage to increase the capacity factor of new transmission developed to access high quality solar and wind resources in remote locations.

  11. Multi-Probe Diagnostic Hall

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

    multiscale fluid dynamics, or extreme electromagnetic field interactions with matter. ... compression science, is vital to a broad spectrum of engineering and defense applications ...

  12. Table HC1-8a. Housing Unit Characteristics by Urban/Rural Location,

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

    8a. Housing Unit Characteristics by Urban/Rural Location, Million U.S. Households, 2001 Housing Unit Characteristics RSE Column Factor: Total Urban/Rural Location 1 RSE Row Factors City Town Suburbs Rural 0.5 0.8 1.3 1.3 1.4 Total .............................................................. 107.0 49.9 18.0 21.2 17.9 4.2 Census Region and Division Northeast ..................................................... 20.3 7.7 4.5 4.7 3.4 7.4 New England .............................................

  13. Table HC7-8a. Home Office Equipment by Urban/Rural Location,

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

    8a. Home Office Equipment by Urban/Rural Location, Million U.S. Households, 2001 Home Office Equipment RSE Column Factor: Total Urban/Rural Location 1 RSE Row Factors City Town Suburbs Rural 0.5 0.9 1.3 1.2 1.4 Total .............................................................. 107.0 49.9 18.0 21.2 17.9 4.1 Households Using Office Equipment ......................................... 96.2 43.9 16.0 20.2 16.1 4.1 Personal Computers 2 ................................. 60.0 25.6 9.3 15.0 10.1 4.7

  14. Special Workshop: Building Location Aware Apps on the iPhone

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

    Special Workshop: Building Location Aware Apps on the iPhone Special Workshop: Building Location Aware Apps on the iPhone WHEN: Jul 17, 2015 11:00 AM - 2:00 PM WHERE: Time Out Pizzeria 1350 Central Ave, Los Alamos, USA SPEAKER: Mike Ham CONTACT: Jessica Privette 505 667-0375 CATEGORY: Bradbury INTERNAL: Calendar Login iPhone App Development Class Event Description Learn to build an iPhone app that uses U.S. Global Positioning System (GPS) data! This three-hour course will cover how to build an

  15. Procedure for developing biological input for the design, location, or modification of water-intake structures

    SciTech Connect (OSTI)

    Neitzel, D.A.; McKenzie, D.H.

    1981-12-01

    To minimize adverse impact on aquatic ecosystems resulting from the operation of water intake structures, design engineers must have relevant information on the behavior, physiology and ecology of local fish and shellfish. Identification of stimulus/response relationships and the environmental factors that influence them is the first step in incorporating biological information in the design, location or modification of water intake structures. A procedure is presented in this document for providing biological input to engineers who are designing, locating or modifying a water intake structure. The authors discuss sources of stimuli at water intakes, historical approaches in assessing potential/actual impact and review biological information needed for intake design.

  16. Stratigraphic Profiles for Selected Hanford Site Seismometer Stations and Other Locations

    SciTech Connect (OSTI)

    Last, George V.

    2014-02-01

    Stratigraphic profiles were constructed for eight selected Hanford Site seismometer stations, five Hanford Site facility reference locations, and seven regional three-component broadband seismometer stations. These profiles provide interpretations of the subsurface layers to support estimation of ground motions from past earthquakes, and the prediction of ground motions from future earthquakes. In most cases these profiles terminated at the top of the Wanapum Basalt, but at selected sites profiles were extended down to the top of the crystalline basement. The composite one-dimensional stratigraphic profiles were based primarily on previous interpretations from nearby boreholes, and in many cases the nearest deep borehole is located kilometers away.

  17. The behavior, quantity, and location of undissolved gas in Tank 241-SY-101

    SciTech Connect (OSTI)

    Brewster, M.E.; Gallagher, N.B.; Hudson, J.D.; Stewart, C.W.

    1995-10-01

    Mitigation of episodic flammable gas releases from Hanford Waste Tank 241-SY-101 was accomplished in July 1993 with the installation of a mixer pump that prevents gas retention. But is has not been possible until recently to measure the effects of mixing on the waste or how much gas remains and where it is located. Direct measurements of the void fraction and rheology of the mixed waste by the void fraction instrument (VFI) and ball rheometer along with previous data provide estimates of the location, quantity, and behavior of undissolved gas in the tank. This report documents the compilation and integration of the information that enables this understanding.

  18. Electrochemical impedance spectroscopy system and methods for determining spatial locations of defects

    DOE Patents [OSTI]

    Glenn, David F.; Matthern, Gretchen E.; Propp, W. Alan; Glenn, Anne W.; Shaw, Peter G.

    2006-08-08

    A method and apparatus for determining spatial locations of defects in a material are described. The method includes providing a plurality of electrodes in contact with a material, applying a sinusoidal voltage to a select number of the electrodes at a predetermined frequency, determining gain and phase angle measurements at other of the electrodes in response to applying the sinusoidal voltage to the select number of electrodes, determining impedance values from the gain and phase angle measurements, computing an impedance spectrum for an area of the material from the determined impedance values, and comparing the computed impedance spectrum with a known impedance spectrum to identify spatial locations of defects in the material.

  19. Using Downhole Probes to Locate and Characterize Buried Transuranic and Mixed Low Level Waste

    SciTech Connect (OSTI)

    Steinman, Donald K; Bramblett, Richard L; Hertzog, Russel C

    2012-06-25

    Borehole logging probes were developed and tested to locate and quantify transuranic elements in subsurface disposal areas and in contaminated sites at USDOE Weapons Complex sites. A new method of measuring very high levels of chlroine in the subsurface was developed using pulsed neutron technology from oilfield applications. The probes were demonstrated at the Hanford site in wells containing plutonium and other contaminants.

  20. Analytical and experimental studies of leak location and environment characterization for the international space station

    SciTech Connect (OSTI)

    Woronowicz, Michael; Blackmon, Rebecca; Brown, Martin; Abel, Joshua; Hawk, Doug; Autrey, David; Glenn, Jodie; Bond, Tim; Buffington, Jesse; Cheng, Edward; Ma, Jonathan; Rossetti, Dino; DeLatte, Danielle; Garcia, Kelvin; Mohammed, Jelila; Montt de Garcia, Kristina; Perry, Radford; Tull, Kimathi; Warren, Eric

    2014-12-09

    The International Space Station program is developing a robotically-operated leak locator tool to be used externally. The tool would consist of a Residual Gas Analyzer for partial pressure measurements and a full range pressure gauge for total pressure measurements. The primary application is to demonstrate the ability to detect NH{sub 3} coolant leaks in the ISS thermal control system. An analytical model of leak plume physics is presented that can account for effusive flow as well as plumes produced by sonic orifices and thruster operations. This model is used along with knowledge of typical RGA and full range gauge performance to analyze the expected instrument sensitivity to ISS leaks of various sizes and relative locations (“directionality”). The paper also presents experimental results of leak simulation testing in a large thermal vacuum chamber at NASA Goddard Space Flight Center. This test characterized instrument sensitivity as a function of leak rates ranging from 1 lb{sub m/}/yr. to about 1 lb{sub m}/day. This data may represent the first measurements collected by an RGA or ion gauge system monitoring off-axis point sources as a function of location and orientation. Test results are compared to the analytical model and used to propose strategies for on-orbit leak location and environment characterization using the proposed instrument while taking into account local ISS conditions and the effects of ram/wake flows and structural shadowing within low Earth orbit.

  1. EIS-0293: Transfer of Land Tracts Located at Los Alamos National Laboratory, New Mexico

    Broader source: Energy.gov [DOE]

    NNSA/DOE issued an Amended Record of Decision for the EIS for the conveyance of certain additional tracts of land administered by the DOE and located at Los Alamos National Laboratory, Los Alamos, and Santa Fe Counties, NM. Previous decisions and transfers were announced in the 2000 ROD and the 2002 and 2005 Amended RODs.

  2. Hanford Single-Shell Tank Leak Causes and Locations - 241-B Farm

    SciTech Connect (OSTI)

    Girardot, Crystal L.; Harlow, Donald G.

    2013-07-11

    This document identifies 241-B Tank Farm (B Farm) leak cause and locations for the 100 series leaking tank (241-B-107) identified in RPP-RPT-49089, Hanford B-Farm Leak Inventory Assessments Report. This document satisfies the B Farm portion of the target (T04) in the Hanford Federal Facility Agreement and Consent Order milestone M-045-91F.

  3. Assessment of Wind/Solar Co-located Generation in Texas

    SciTech Connect (OSTI)

    Steven M. Wiese

    2009-07-20

    This paper evaluates the opportunity to load co-located wind and solar generation capacity onto a constrained transmission system while engendering only minimal losses. It quantifies the economic and energy opportunities and costs associated with pursuing this strategy in two Texas locations ?¢???? one in west Texas and the other in south Texas. The study builds upon previous work published by the American Solar Energy Society (ASES) which illuminated the potential benefits of negative correlation of wind and solar generation in some locations by quantifying the economic and energy losses which would arise from deployment of solar generation in areas with existing wind generation and constrained transmission capacity. Clean Energy Associates (CEA) obtained and incorporated wind and solar resource data and the Electric Reliability Council of Texas (ERCOT)) load and price data into a model which evaluates varying levels of solar thermal, solar photovoltaic (PV) and wind capacity against an assumed transmission capacity limit at each of the two locations.

  4. Tumor histology and location predict deep nuclei toxicity: Implications for late effects from focal brain irradiation

    SciTech Connect (OSTI)

    Plaga, Alexis; Shields, Lisa B.E.; Sun, David A.; Vitaz, Todd W.; Spalding, Aaron C.

    2012-10-01

    Normal tissue toxicity resulting from both disease and treatment is an adverse side effect in the management of patients with central nervous system malignancies. We tested the hypothesis that despite these improvements, certain tumors place patients at risk for neurocognitive, neuroendocrine, and neurosensory late effects. Defining patient groups at risk for these effects could allow for development of preventive strategies. Fifty patients with primary brain tumors underwent radiation planning with magnetic resonance imaging scan and computed tomography datasets. Organs at risk (OAR) responsible for neurocognitive, neuroendocrine, and neurosensory function were defined. Inverse-planned intensity-modulated radiation therapy was optimized with priority given to target coverage while penalties were assigned to exceeding normal tissue tolerances. Tumor laterality, location, and histology were compared with OAR doses, and analysis of variance was performed to determine the significance of any observed correlation. The ipsilateral hippocampus exceeded dose limits in frontal (74%), temporal (94%), and parietal (100%) lobe tumor locations. The contralateral hippocampus was at risk in the following tumor locations: frontal (53%), temporal (83%), or parietal (50%) lobe. Patients with high-grade glioma were at risk for ipsilateral (88%) and contralateral (73%) hippocampal damage (P <0.05 compared with other histologies). The pituitary gland and hypothalamus exceeded dose tolerances in patients with pituitary tumors (both 100%) and high-grade gliomas (50% and 75%, P <0.05 compared with other histologies), respectively. Despite application of modern radiation therapy, certain tumor locations and histologies continue to place patients at risk for morbidity. Patients with high-grade gliomas or tumors located in the frontal, temporal, or parietal lobes are at risk for neurocognitive decline, likely because of larger target volumes and higher radiation doses. Data from this study may help to stratify patients at risk for late effects to develop strategies to reduce frequency and severity of radiation sequelae.

  5. Overview of Opportunities for Co-Location of Solar Energy Technologies and Vegetation

    SciTech Connect (OSTI)

    Macknick, J.; Beatty, B.; Hill, G.

    2013-12-01

    Large-scale solar facilities have the potential to contribute significantly to national electricity production. Many solar installations are large-scale or utility-scale, with a capacity over 1 MW and connected directly to the electric grid. Large-scale solar facilities offer an opportunity to achieve economies of scale in solar deployment, yet there have been concerns about the amount of land required for solar projects and the impact of solar projects on local habitat. During the site preparation phase for utility-scale solar facilities, developers often grade land and remove all vegetation to minimize installation and operational costs, prevent plants from shading panels, and minimize potential fire or wildlife risks. However, the common site preparation practice of removing vegetation can be avoided in certain circumstances, and there have been successful examples where solar facilities have been co-located with agricultural operations or have native vegetation growing beneath the panels. In this study we outline some of the impacts that large-scale solar facilities can have on the local environment, provide examples of installations where impacts have been minimized through co-location with vegetation, characterize the types of co-location, and give an overview of the potential benefits from co-location of solar energy projects and vegetation. The varieties of co-location can be replicated or modified for site-specific use at other solar energy installations around the world. We conclude with opportunities to improve upon our understanding of ways to reduce the environmental impacts of large-scale solar installations.

  6. System, method and computer-readable medium for locating physical phenomena

    DOE Patents [OSTI]

    Weseman, Matthew T. [Idaho Falls, ID; Rohrbaugh, David T. [Idaho Falls, ID; Richardson, John G. [Idaho Falls, ID

    2008-02-26

    A method, system and computer product for detecting the location of a deformation of a structure includes baselining a defined energy transmitting characteristic for each of the plurality of laterally adjacent conductors attached to the structure. Each of the plurality of conductors includes a plurality of segments coupled in series and having an associated unit value representative of the defined energy transmitting characteristic. The plurality of laterally adjacent conductors includes a plurality of identity groups with each identity group including at least one of the plurality of segments from each of the plurality of conductors. Each of the plurality of conductors are monitored for a difference in the defined energy transmitting characteristic when compared with a baseline energy transmitting characteristic for each of the plurality of conductors. When the difference exceeds a threshold value, a location of the deformation along the structure is calculated.

  7. Acoustic emission non-destructive testing of structures using source location techniques.

    SciTech Connect (OSTI)

    Beattie, Alan G.

    2013-09-01

    The technology of acoustic emission (AE) testing has been advanced and used at Sandia for the past 40 years. AE has been used on structures including pressure vessels, fire bottles, wind turbines, gas wells, nuclear weapons, and solar collectors. This monograph begins with background topics in acoustics and instrumentation and then focuses on current acoustic emission technology. It covers the overall design and system setups for a test, with a wind turbine blade as the object. Test analysis is discussed with an emphasis on source location. Three test examples are presented, two on experimental wind turbine blades and one on aircraft fire extinguisher bottles. Finally, the code for a FORTRAN source location program is given as an example of a working analysis program. Throughout the document, the stress is on actual testing of real structures, not on laboratory experiments.

  8. Effects of thermocouple installation and location on fuel rod temperature measurements. [PWR; BWR

    SciTech Connect (OSTI)

    McCormick, R.D.

    1983-01-01

    This paper describes the results of analyses of nuclear fuel rod cladding temperature data obtained during in-reactor experiments under steady state and transient (simulated loss-of-coolant accident) operating conditions. The objective of the analyses was to determine the effect of thermocouple attachment method and location on measured thermal response. The use of external thermocouples increased the time to critical heat flux (CHF), reduced the blowdown peak temperature, and enhanced rod quench. A comparison of laser welded and resistance welded external thermocouple responses showed that the laser welding technique reduced the indicated cladding steady state temperatures and provided shorter time-to-CHF. A comparison of internal welded and embedded thermocouples indicated that the welded technique gave generally unsatisfactory cladding temperature measurements. The embedded thermocouple gave good, consistent results, but was possibly more fragile than the welded thermocouples. Detailed descriptions of the thermocouple designs, attachment methods and locations, and test conditions are provided.

  9. Locating hardware faults in a data communications network of a parallel computer

    DOE Patents [OSTI]

    Archer, Charles J.; Megerian, Mark G.; Ratterman, Joseph D.; Smith, Brian E.

    2010-01-12

    Hardware faults location in a data communications network of a parallel computer. Such a parallel computer includes a plurality of compute nodes and a data communications network that couples the compute nodes for data communications and organizes the compute node as a tree. Locating hardware faults includes identifying a next compute node as a parent node and a root of a parent test tree, identifying for each child compute node of the parent node a child test tree having the child compute node as root, running a same test suite on the parent test tree and each child test tree, and identifying the parent compute node as having a defective link connected from the parent compute node to a child compute node if the test suite fails on the parent test tree and succeeds on all the child test trees.

  10. Method and system for assigning a confidence metric for automated determination of optic disc location

    DOE Patents [OSTI]

    Karnowski, Thomas P.; Tobin, Jr., Kenneth W.; Muthusamy Govindasamy, Vijaya Priya; Chaum, Edward

    2012-07-10

    A method for assigning a confidence metric for automated determination of optic disc location that includes analyzing a retinal image and determining at least two sets of coordinates locating an optic disc in the retinal image. The sets of coordinates can be determined using first and second image analysis techniques that are different from one another. An accuracy parameter can be calculated and compared to a primary risk cut-off value. A high confidence level can be assigned to the retinal image if the accuracy parameter is less than the primary risk cut-off value and a low confidence level can be assigned to the retinal image if the accuracy parameter is greater than the primary risk cut-off value. The primary risk cut-off value being selected to represent an acceptable risk of misdiagnosis of a disease having retinal manifestations by the automated technique.

  11. A COMPARISON OF CHALLENGES ASSOCIATED WITH SLUDGE REMOVAL & TREATMENT & DISPOSAL AT SEVERAL SPENT FUEL STORAGE LOCATIONS

    SciTech Connect (OSTI)

    PERES, M.W.

    2007-01-09

    Challenges associated with the materials that remain in spent fuel storage pools are emerging as countries deal with issues related to storing and cleaning up nuclear fuel left over from weapons production. The K Basins at the Department of Energy's site at Hanford in southeastern Washington State are an example. Years of corrosion products and piles of discarded debris are intermingled in the bottom of these two pools that stored more 2,100 metric tons (2,300 tons) of spent fuel. Difficult, costly projects are underway to remove radioactive material from the K Basins. Similar challenges exist at other locations around the globe. This paper compares the challenges of handling and treating radioactive sludge at several locations storing spent nuclear fuel.

  12. Google Earth locations of USA and seafloor hydrothermal vents with associated rare earth element data

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Andrew Fowler

    2016-02-10

    Google Earth .kmz files that contain the locations of geothermal wells and thermal springs in the USA, and seafloor hydrothermal vents that have associated rare earth element data. The file does not contain the actual data, the actual data is available through the GDR website in two tier 3 data sets entitled "Compilation of Rare Earth Element Analyses from US Geothermal Fields and Mid Ocean Ridge (MOR) Hydrothermal Vents" and "Rare earth element content of thermal fluids from Surprise Valley, California"

  13. Hanford Single-Shell Tank Leak Causes and Locations - 241-C Farm

    SciTech Connect (OSTI)

    Girardot, Crystal L.; Harlow, Donald G.

    2013-07-30

    This document identifies 241-C Tank Farm (C Farm) leak causes and locations for the 100 series leaking tanks (241-C-101 and 241-C-105) identified in RPP-RPT-33418, Rev. 2, Hanford C-Farm Leak Inventory Assessments Report. This document satisfies the C Farm portion of the target (T04) in the Hanford Federal Facility Agreement and Consent Order milestone M-045-91F.

  14. Hanford Single-Shell Tank Leak Causes and Locations - 241-U Farm

    SciTech Connect (OSTI)

    Girardot, Crystal L.; Harlow, Donald G.

    2013-12-02

    This document identifies 241-U Tank Farm (U Farm) leak causes and locations for the 100 series leaking tanks (241-U-104, 241-U-110, and 241-U-112) identified in RPP-RPT-50097, Rev. 0, Hanford 241-U Farm Leak Inventory Assessment Report. This document satisfies the U-Farm portion of the target (T04) in the Hanford Federal Facility Agreement and Consent Order milestone M-045-91F.

  15. Hanford Single-Shell Tank Leak Causes and Locations - 241-A Farm

    SciTech Connect (OSTI)

    Girardot, Crystal L.; Harlow, Donald G.

    2013-09-10

    This document identifies 241-A Tank Farm (A Farm) leak causes and locations for the 100 series leaking tanks (241-A-104 and 241-A-105) identified in RPP-ENV-37956, Hanford A and AX Farm Leak Assessment Report. This document satisfies the A Farm portion of the target (T04) in the Hanford Federal Facility Agreement and Consent Order milestone M-045-91F.

  16. HQ State HQ City Primary Awardee Brief Project Description Project Locations

    Energy Savers [EERE]

    Primary Awardee Brief Project Description Project Locations Recovery Act Funding* Participant Share Total Project Value Including Cost Share Los Angeles Los Angeles Department of Water and Power Implement a smart grid demonstration at university campus properties and technology transfer laboratories to establish a fully-integrated Smart Grid system and suite of technologies as applied to demand response, conduct a comprehensive portfolio of behavioral studies, demonstrate next- generation cyber

  17. Method and apparatus for identifying, locating and quantifying physical phenomena and structure including same

    DOE Patents [OSTI]

    Richardson, John G.

    2006-01-24

    A method and system for detecting, locating and quantifying a physical phenomena such as strain or a deformation in a structure. A minimum resolvable distance along the structure is selected and a quantity of laterally adjacent conductors is determined. Each conductor includes a plurality of segments coupled in series which define the minimum resolvable distance along the structure. When a deformation occurs, changes in the defined energy transmission characteristics along each conductor are compared to determine which segment contains the deformation.

  18. Hanford Single Shell Tank Leak Causes and Locations - 241-TX Farm

    SciTech Connect (OSTI)

    Girardot, C. L.; Harlow, D> G.

    2014-07-22

    This document identifies 241-TX Tank Farm (TX Farm) leak causes and locations for the 100 series leaking tanks (241-TX-107 and 241-TX-114) identified in RPP-RPT-50870, Rev. 0, Hanford 241-TX Farm Leak Inventory Assessment Report. This document satisfies the TX Farm portion of the target (T04) in the Hanford Federal Facility Agreement and Consent Order milestone M-045-91F.

  19. Hanford Single-Shell Tank Leak Causes and Locations - 241-T Farm

    SciTech Connect (OSTI)

    Girardot, Crystal L.; Harlow, Donald G.

    2014-05-15

    This document identifies 241-T Tank Farm (T Farm) leak causes and locations for the 100 series leaking tanks (241-T-106 and 241-T-111) identified in RPP-RPT-55084, Rev. 0, Hanford 241-T Farm Leak Inventory Assessment Report. This document satisfies the T Farm portion of the target (T04) in the Hanford Federal Facility Agreement and Consent Order milestone M-045-91F.

  20. Determining resistivity of a geological formation using circuitry located within a borehole casing

    DOE Patents [OSTI]

    Vail III, William Banning

    2006-01-17

    Geological formation resistivity is determined. Circuitry is located within the borehole casing that is adjacent to the geological formation. The circuitry can measure one or more voltages across two or more voltage measurement electrodes associated with the borehole casing. The measured voltages are used by a processor to determine the resistivity of the geological formation. A common mode signal can also be reduced using the circuitry.