Sample records for hall lodge hall

  1. .......Agnew Hall .......Air Conditioning Facility

    E-Print Network [OSTI]

    Buehrer, R. Michael

    /Burleson Tennis Center .......Burruss Hall .......Campbell Hall .......Cassell Coliseum .......Central Stores .......Dietrick Hall .......Durham Hall .......Eggleston Hall .......Engel Hall D.....English Field .......Femoyer .......Golf Course Clubhouse .......Graduate Life Center at ........Donaldson Brown .......Greenhouses

  2. The Hall

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over Our InstagramStructureProposedPAGESafetyTed5,AuditThe FiveBiofuelsGEThe H2The H2Hall

  3. Bing Concert Hall, under construction

    E-Print Network [OSTI]

    Houses Schwab Residential Center Lyman Graduate Residences Sterling Quad Mirrielees Pearce Mitchell Godzilla Thornton Center Bambi Roble Gym Terman Engineering Center Forsythe Hall Spruce Hall Cypress Hall

  4. TRINITY HALL PUBLICATION SCHEME

    E-Print Network [OSTI]

    Lasenby, Joan

    TRINITY HALL PUBLICATION SCHEME PART 2 Main categories The main groups of classes of information Trinity Hall was founded in 1350 by William Bateman, Bishop of Norwich, as a common law corporation to the University and College Statutes. The Education (Listed Bodies) Order 1997 recognises Trinity Hall

  5. TRINITY HALL Trinity Hall, Dartry Road, Dublin 6,

    E-Print Network [OSTI]

    O'Mahony, Donal E.

    TRINITY HALL Trinity Hall, Dartry Road, Dublin 6, Ireland. Tel +353-1-4971772 E-Mail: trinity.hall@tcd.ie & warden@tcd.ie www.wardentrinityhall.tcdlife.ie/ RESIDENTS HANDBOOK 2010/2011 TRINITY HALL Students are advised to read this information in conjunction with the Conditions of Occupancy Trinity Hall 2010

  6. Florence Moore Wilbur Hall

    E-Print Network [OSTI]

    Bogyo, Matthew

    Gardens Braun Music Center The Knoll Bechtel International Center Post Office Clubhouse Old Union 590 500 Truck Hse. Clock Tower Owen Bolivar House Haas Center Galvez Modular Sweet Hall Bookstore Law School. Hoover Tower Cummings Art Art Gallery Manzanita Dining Commons Burnham Pavilion Ford Center Montag Hall

  7. TRINITY HALL PUBLICATION SCHEME

    E-Print Network [OSTI]

    Lasenby, Joan

    TRINITY HALL PUBLICATION SCHEME PART 1 INTRODUCTION 1. Legal requirement 1.1 Adopting a publication and whether or not charges will be made. 3. The `model' publication scheme for higher education 3.1 Trinity and is committed to publishing the information it describes. 4. Who we are 4.1 Trinity Hall is a college within

  8. Hall A Annual Report 2013

    SciTech Connect (OSTI)

    Dalton, Mark M.

    2014-02-01T23:59:59.000Z

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

  9. 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."

  10. The Monty Hall Problem Richard D. Gill

    E-Print Network [OSTI]

    Gill, Richard D.

    the Monty Hall problem is often called the Monty Hall para- dox. The key to accepting and understanding

  11. Housing services Zinfandel Hall

    E-Print Network [OSTI]

    Ravikumar, B.

    Housing services Zinfandel Hall (707) 664-2541 Fax: (707) 664-4158 e-mail: ssu.housing@sonoma.edu www.sonoma.edu/housing On-Campus Housing The Residential Community provides comfortable, convenient cam- pus housing for 3,000 single students. The Community is a unique mix of nontraditional resident

  12. TRINITY HALL ACCOUNTS FOR THE YEAR ENDED

    E-Print Network [OSTI]

    Talbot, James P.

    TRINITY HALL CAMBRIDGE ACCOUNTS FOR THE YEAR ENDED 30 June 2011 #12;TRINITY HALL Index Balance Sheet 19 Cash Flow Statement 20 - 32 Notes to the Accounts #12;TRINITY HALL Governing Body;Status Trinity Hall, or The Master, Fellows and Scholars of the College or Hall of the Holy Trinity

  13. Cylindrical geometry hall thruster

    DOE Patents [OSTI]

    Raitses, Yevgeny (Princeton, NJ); Fisch, Nathaniel J. (Princeton, NJ)

    2002-01-01T23:59:59.000Z

    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.

  14. Town Hall with Secretary Moniz

    Broader source: Energy.gov [DOE]

    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.

  15. Bing Concert Hall, Under Construction

    E-Print Network [OSTI]

    Prinz, Friedrich B.

    Freidenrich Center, Under Construction Terman Engineering Center, Demolition Frost Amphitheater Ford Plaza Hall Cowell Houses Schwab Residential Center Lyman Graduate Residences Sterling Quad Mirrielees Pearce

  16. K-7109Agnew Hall M-2204Air Conditioning Plant

    E-Print Network [OSTI]

    Buehrer, R. Michael

    Building] K-4171Burchard Hall L-4176Burruss Hall L-637Campbell Hall - East Wing L-636Campbell Hall - Main Center at Donaldson Brown L-9124Greenhouse Q-10 241Grounds Building (Central Stores) J-4 158Hahn Hall

  17. WORKFORCE DIVERSITY TOWN HALL

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment of Energy MicrosoftVOLUMEWORKFORCE DIVERSITY TOWN HALL DECEMBER

  18. 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.

  19. Rhodes Hall Ross Heart Hospital

    E-Print Network [OSTI]

    Howat, Ian M.

    Emergency 315 315 26 Rhodes Hall Ross Heart Hospital James Cancer Hospital Martha Morehouse.m. James Cancer Hospital 7:10 a.m. Rhodes Hall 7:13 a.m. Ross Heart Hospital 7:15 a.m. Martha Morehouse

  20. CONFERENCES | EVENTS | FINE DINING TRINITY HALL

    E-Print Network [OSTI]

    Lasenby, Joan

    CONFERENCES | EVENTS | FINE DINING #12;32 WELCOME WELCOME TO TRINITY HALL CONFERENCE AND EVENTS "If and point the way to the gardens of Trinity Hall. "HENRY JAMES 1878 Trinity Hall is the fifth oldest college from the hustle and bustle of the City, Trinity Hall has a quiet, peaceful air making it perfect

  1. 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)

  2. Infrared Hall Effect in cuprates*

    E-Print Network [OSTI]

    Fominov, Yakov

    Diagram #12;Fermi surfaces H. KONTANI, K. KANKI, AND K. UEDA PRB 59 (1999). #12;IR Hall EffectB i m c = - 2 2 4 ( ) p H xy i = - =1000 cm-1 Schmadel, et al, PRB (2007) #12;Opt. Bi(2212): Far IR Hall H H i = - 84 cm-1 Schmadel, et al, PRB (2007) H ~ 0.3 cm-1/T H ~ aT1.65 #12

  3. Optimization of Cylindrical Hall Thrusters

    SciTech Connect (OSTI)

    Yevgeny Raitses, Artem Smirnov, Erik Granstedt, and Nathaniel J. Fi

    2007-07-24T23:59:59.000Z

    The cylindrical Hall thruster features high ionization efficiency, quiet operation, and ion acceleration in a large volume-to-surface ratio channel with performance comparable with the state-of-the-art annular Hall thrusters. These characteristics were demonstrated in low and medium power ranges. Optimization of miniaturized cylindrical thrusters led to performance improvements in the 50-200W input power range, including plume narrowing, increased thruster efficiency, reliable discharge initiation, and stable operation. __________________________________________________

  4. Optimization of Cylindrical Hall Thrusters

    SciTech Connect (OSTI)

    Yevgeny Raitses, Artem Smirnov, Erik Granstedt, and Nathaniel J. Fisch

    2007-11-27T23:59:59.000Z

    The cylindrical Hall thruster features high ionization efficiency, quiet operation, and ion acceleration in a large volume-to-surface ratio channel with performance comparable with the state-of-the-art annular Hall thrusters. These characteristics were demonstrated in low and medium power ranges. Optimization of miniaturized cylindrical thrusters led to performance improvements in the 50-200W input power range, including plume narrowing, increased thruster efficiency, reliable discharge initiation, and stable operation.

  5. Haaren Hall North Hall WestportNew Building BMW 54th St. Annex Getting Around

    E-Print Network [OSTI]

    Rosen, Jay

    Haaren Hall North Hall WestportNew Building BMW 54th St. Annex Getting Around 4th Edition September . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BMW · Floor 6

  6. UBC Video Collection / Raymond J. Hall (collector)

    E-Print Network [OSTI]

    Handy, Todd C.

    UBC Video Collection / Raymond J. Hall (collector) Compiled by Christopher Hives (2011) University / Physical Description Collector's Biographical Sketch Custodial History Scope and Content Item List (collector). - 1992-2002. 30 video recordings. Collector's Biographical Sketch Raymond Hall came to Vancouver

  7. City Hall plazas : they're different

    E-Print Network [OSTI]

    Hall, Kristen E. (Kristen Elizabeth)

    2008-01-01T23:59:59.000Z

    This essay explores the form, goals, and ideals behind city hall plazas by asking the questions: What is the difference between a city hall plaza and any other urban plaza? What are the uses intended by the city in the ...

  8. The Monty Hall Problem Afra Zomorodian

    E-Print Network [OSTI]

    Zomorodian, Afra

    The Monty Hall Problem's origin is from the TV show, "Let's Make A Deal" hosted by Monty Hall. The statement curtain but before the curtain is lifted, the emcee lifts one of the other curtains, revealing an empty

  9. The Monty Hall Problem Afra Zomorodian

    E-Print Network [OSTI]

    Zomorodian, Afra

    The Monty Hall Problem's origin is from the TV show, ``Let's Make A Deal'' hosted by Monty Hall have picked one curtain but before the curtain is lifted, the emcee lifts one of the other curtains

  10. Experimental Hall D | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMFormsGasReleaseSpeechesHall A This photo shows one of theHall D

  11. ThompsonHall DimondLibrary

    E-Print Network [OSTI]

    Congreve Hall ThompsonHall Murkland Hall DeMer Ha DimondLibrary Bounce House Bounce House 13-30 31 Durham Business Association 96A Durham: It's Where U Live 164 Ecological Advocates 14 Education Crime Investigation Association 49 Hillell 167 Horsemen's Club 29 Housing 138 Improv Anonymous 13

  12. Graduate Hall Director Office of Residential Programs

    E-Print Network [OSTI]

    Hone, James

    Page 1 Graduate Hall Director Office of Residential Programs Housing Guidelines #12;Page 2 Graduate Hall Director for Residential Programs Guidelines for Residence This document is intended for the Office of Residential Programs Graduate Hall Directors (GHDs) who obtain housing on campus as part

  13. THalumni.net Trinity Hall's online community

    E-Print Network [OSTI]

    Lasenby, Joan

    THalumni.net Trinity Hall's online community Joining THalumni.net allows members to: · Check or location and send a private message to other Trinity Hall members. · Join the careers directory if you or loca- tion and send Trinity Hall members a private message. · Book and pay for events online and see

  14. Bing Concert Hall, Under Construction

    E-Print Network [OSTI]

    Prinz, Friedrich B.

    BioE/ChemE Building Bing Concert Hall, Under Construction Arrillaga Family Dining Commons West Campus Recreation Center, Under Construction BioE/ChemE Building, Under Construction Terman Engineering Moore Materials Rsrch. Durand David Packard Elect. Eng. Paul G. Allen Building Roble Pool Roble Modulars

  15. Spin Hall Effect For Anyons

    E-Print Network [OSTI]

    S. Dhar; B. Basu; Subir Ghosh

    2007-06-27T23:59:59.000Z

    We explain the intrinsic spin Hall effect from generic anyon dynamics in the presence of external electromagnetic field. The free anyon is represented as a spinning particle with an underlying non-commutative configuration space. The Berry curvature plays a major role in the analysis.

  16. Bing Concert Hall, Under Construction

    E-Print Network [OSTI]

    Straight, Aaron

    a Tresidder Union Dinkelspiel AuditoriumFaculty Club Kingscote Gardens Braun Music Center The Knoll Bechtel Meyer Library Fire Truck Hse. Clock Tower Owen Bolivar House Haas Center Galvez Modular Bookstore Crothers Memorial Encina Commons Encina HallBing Wing Lou Henry Hoover Bldg.Hoover Tower Cummings Art Art

  17. William James Granville Stanley Hall

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    William James Harvard Granville Stanley Hall Johns Hopkins James Rowland Angell Chicago Morton Leon Festinger U. of Iowa Stanley Schacther U. Of Michigan Richard Nisbett Columbia Timothy D. Wilson U. of Michigan G. Daniel Lassiter U. of Virginia Ian Handley Ohio University Max Frederick Meyer U. Of Missouri

  18. The fluctuation induced Hall effect

    SciTech Connect (OSTI)

    Shen, W.; Prager, S.C.

    1993-02-01T23:59:59.000Z

    The fluctuation induced Hall term, [le][approximately][ovr J] [times] [approximately][ovr B][ge], has been measured in the MST reversed field pinch. The term is of interest as a possible source of current self-generation (dynamo). It is found to be non-negligible, but small in that it can account for less than 25% of the dynamo driven current.

  19. The fluctuation induced Hall effect

    SciTech Connect (OSTI)

    Shen, W.; Prager, S.C.

    1993-02-01T23:59:59.000Z

    The fluctuation induced Hall term, {le}{approximately}{ovr J} {times} {approximately}{ovr B}{ge}, has been measured in the MST reversed field pinch. The term is of interest as a possible source of current self-generation (dynamo). It is found to be non-negligible, but small in that it can account for less than 25% of the dynamo driven current.

  20. Building Green in Greensburg: City Hall Building

    Office of Energy Efficiency and Renewable Energy (EERE)

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

  1. Hall Magnetohydrodynamics of weakly-ionized plasma

    E-Print Network [OSTI]

    B. P. Pandey; Mark Wardle

    2006-08-02T23:59:59.000Z

    We show that the Hall scale in a weakly ionized plasma depends on the fractional ionization of the medium and, Hall MHD description becomes important whenever the ion-neutral collision frequency is comparable to the ion-gyration frequency, or, the ion-neutral collisional mean free path is smaller than the ion gyro-radius. Wave properties of a weakly-ionized plasma also depends on the fractional ionization and plasma Hall parameters, and whistler mode is the most dominant mode in such a medium. Thus Hall MHD description will be important in astrophysical disks, dark molecular clouds, neutron star crusts, and, solar and planetary atmosphere.

  2. 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

  3. Hall viscosity from gauge/gravity duality

    E-Print Network [OSTI]

    Omid Saremi; Dam Thanh Son

    2011-03-24T23:59:59.000Z

    In (2+1)-dimensional systems with broken parity, there exists yet another transport coefficient, appearing at the same order as the shear viscosity in the hydrodynamic derivative expansion. In condensed matter physics, it is referred to as "Hall viscosity". We consider a simple holographic realization of a (2+1)-dimensional isotropic fluid with broken spatial parity. Using techniques of fluid/gravity correspondence, we uncover that the holographic fluid possesses a nonzero Hall viscosity, whose value only depends on the near-horizon region of the background. We also write down a Kubo's formula for the Hall viscosity. We confirm our results by directly computing the Hall viscosity using the formula.

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

    Energy Savers [EERE]

    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...

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

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

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

  6. May 20, 2014 Klarman Hall Construction Project Update

    E-Print Network [OSTI]

    Davis, H. Floyd

    May 20, 2014 Klarman Hall Construction Project Update The Klarman Hall will sound. At this signal, construction personnel will clear pedestrians from

  7. Town Hall with Secretary Moniz

    SciTech Connect (OSTI)

    Energy Secretary Ernest Moniz; Deputy Secretary of Energy Daniel Poneman

    2013-07-18T23:59:59.000Z

    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.

  8. 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.

  9. Town Hall with Secretary Moniz

    ScienceCinema (OSTI)

    Energy Secretary Ernest Moniz; Deputy Secretary of Energy Daniel Poneman

    2013-07-25T23:59:59.000Z

    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.

  10. Experimental Hall A | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMFormsGasReleaseSpeechesHall A This photo shows one of the two High

  11. Experimental Hall B | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMFormsGasReleaseSpeechesHall A This photo shows one of the two

  12. Experimental Hall C | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMFormsGasReleaseSpeechesHall A This photo shows one of the

  13. ARM - Welcome to Study Hall

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMForms About Become agovEducationWelcome to Study Hall Outreach Home

  14. BIOGRAPHIES Randolph Hall: Networks, Emergency Response,

    E-Print Network [OSTI]

    Southern California, University of

    BIOGRAPHIES Randolph Hall: Networks, Emergency Response, Mathematical Modeling Hall, the center: Emergency Response Larson, former co-director of the MIT Operations Research Center, was one of the youngest and more than 75 scientific articles, primarily in emergency response, queuing, logistics and workforce

  15. Lodging

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |Is Your HomeLatestCenter (LMI-EFRC)DepartmentSecurityLodging Lodging

  16. Negative nonlocal resistance in mesoscopic gold Hall bars : absence of giant spin Hall effect.

    SciTech Connect (OSTI)

    Mihajlovic, G.; Pearson, J. E.; Garcia, M. A.; Bader, S. D.; Hoffmann, A.; Univ. Complutense de Madrid

    2009-01-01T23:59:59.000Z

    We report the observation of negative nonlocal resistances in multiterminal mesoscopic gold Hall bar structures whose characteristic dimensions are larger than the electron mean-free path. Our results can only be partially explained by a classical diffusive model of the nonlocal transport, and are not consistent with a recently proposed model based on spin Hall effects. Instead, our analysis suggests that a quasiballistic transport mechanism is responsible for the observed negative nonlocal resistance. Based on the sensitivity of our measurements and the spin Hall effect model, we find an upper limit for the spin Hall angle in gold of 0.023 at 4.5 K.

  17. Topological insulators in silicene: Quantum hall, quantum spin hall and quantum anomalous hall effects

    SciTech Connect (OSTI)

    Ezawa, Motohiko [Department of Applied Physics, University of Tokyo, Hongo 7-3-1, Tokyo 113-8656 (Japan)

    2013-12-04T23:59:59.000Z

    Silicene is a monolayer of silicon atoms forming a two-dimensional honeycomb lattice, which shares almost every remarkable property with graphene. The low energy dynamics is described by Dirac electrons, but they are massive due to relatively large spin-orbit interactions. I will explain the following properties of silicene: 1) The band structure is controllable by applying an electric field. 2) Silicene undergoes a phase transition from a topological insulator to a band insulator by applying external electric field. 3) The topological phase transition can be detected experimentally by way of diamagnetism. 4) There is a novel valley-spin selection rules revealed by way of photon absorption. 5) Silicene yields a remarkably many phases such as quantum anomalous Hall phase and valley polarized metal when the exchange field is additionally introduced. 6) A silicon nanotubes can be used to convey spin currents under an electric field.

  18. 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...

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

    Office of Legacy Management (LM)

    '. 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...

  20. Theory of the Anomalous Hall Effect in the Insulating Regime

    E-Print Network [OSTI]

    Liu, Xiongjun

    2012-10-19T23:59:59.000Z

    The Hall resistivity in ferromagnetic materials has an anomalous contribution proportional to the magnetization, which is defined as the anomalous Hall effect (AHE). Being a central topic in the study of ferromagnetic materials for many decades...

  1. Alexander Hall (1) D4 Alumni Center (2) D2

    E-Print Network [OSTI]

    Nelson, Tim

    Cremona Classrooms (77) E3 Demaray Hall (DH) (8) B2 Eaton Hall (EH) (25) C3 Facility Operations Center Floor Peterson (20) C3 Corporate, Foundation, and Major Gifts, WAC (28) B3 Development, WAC (23) F3

  2. ORIGINAL PAPER Eric J. Hall Basil V. Worgul Lubomir Smilenov

    E-Print Network [OSTI]

    Brenner, David Jonathan

    ORIGINAL PAPER Eric J. Hall Ã? Basil V. Worgul Ã? Lubomir Smilenov Carl D. Elliston Ã? David J his colleagues. E. J. Hall (&) Ã? L. Smilenov Ã? C. D. Elliston Ã? D. J. Brenner Center for Radiological

  3. TRINITY HALL HAS INSTALLED CCTV ON THESE PREMISES FOR

    E-Print Network [OSTI]

    Lasenby, Joan

    TRINITY HALL HAS INSTALLED CCTV ON THESE PREMISES FOR YOUR SAFETY AND PROTECTION #12; Trinity Hall Trinity Lane Cambridge CB2 1TJ Tel: 01223 33 25 00 For all enquiries and questions

  4. Unconventional Integer Quantum Hall effect in graphene

    E-Print Network [OSTI]

    V. P. Gusynin; S. G. Sharapov

    2005-08-16T23:59:59.000Z

    Monolayer graphite films, or graphene, have quasiparticle excitations that can be described by 2+1 dimensional Dirac theory. We demonstrate that this produces an unconventional form of the quantized Hall conductivity $\\sigma_{xy} = - (2 e^2/h)(2n+1)$ with $n=0,1,...$, that notably distinguishes graphene from other materials where the integer quantum Hall effect was observed. This unconventional quantization is caused by the quantum anomaly of the $n=0$ Landau level and was discovered in recent experiments on ultrathin graphite films.

  5. Integer Quantum Hall Effect in Graphene

    E-Print Network [OSTI]

    Jellal, Ahmed

    2015-01-01T23:59:59.000Z

    We study the quantum Hall effect in a monolayer graphene by using an approach based on thermodynamical properties. This can be done by considering a system of Dirac particles in an electromagnetic field and taking into account of the edges effect as a pseudo-potential varying continuously along the $x$ direction. At low temperature and in the weak electric field limit, we explicitly determine the thermodynamical potential. With this, we derive the particle numbers in terms of the quantized flux and therefore the Hall conductivity immediately follows.

  6. Integer Quantum Hall Effect in Graphene

    E-Print Network [OSTI]

    Ahmed Jellal

    2015-04-24T23:59:59.000Z

    We study the quantum Hall effect in a monolayer graphene by using an approach based on thermodynamical properties. This can be done by considering a system of Dirac particles in an electromagnetic field and taking into account of the edges effect as a pseudo-potential varying continuously along the $x$ direction. At low temperature and in the weak electric field limit, we explicitly determine the thermodynamical potential. With this, we derive the particle numbers in terms of the quantized flux and therefore the Hall conductivity immediately follows.

  7. Checklists for: Oklahoma 4-H Hall of Fame

    E-Print Network [OSTI]

    Balasundaram, Balabhaskar "Baski"

    Checklists for: Oklahoma 4-H Hall of Fame National 4-H Youth Congress Name County Oklahoma 4-H Hall of Fame National 4-H Youth Congress Oklahoma 4-H Hall of Fame has the following requirements: Oklahoma 4-H on the front page of the Oklahoma 4-H Report Form and on the heading for Section I Member must be 16 years

  8. Making a gift: Trinity Hall is a registered charity

    E-Print Network [OSTI]

    Lasenby, Joan

    Making a gift: Trinity Hall is a registered charity and gifts to the College can be made tax. For more information please see: www.trinhall.cam.ac.uk/giving2012 Development Office, Trinity Hall)1223 765157 Trinity Hall Cambridge registered charity number 1137458 "Receiving funding has made a huge

  9. Comparison of Secondary Islands in Collisional Reconnection to Hall Reconnection

    SciTech Connect (OSTI)

    Shepherd, L. S.; Cassak, P. A. [Department of Physics, West Virginia University, Morgantown, West Virginia, 26506 (United States)

    2010-07-02T23:59:59.000Z

    Large-scale resistive Hall-magnetohydrodynamic simulations of the transition from Sweet-Parker (collisional) to Hall (collisionless) magnetic reconnection are presented; the first to separate secondary islands from collisionless effects. Three main results are described. There exists a regime with secondary islands but without collisionless effects, and the reconnection rate is faster than Sweet-Parker, but significantly slower than Hall reconnection. This implies that secondary islands do not cause the fastest reconnection rates. The onset of Hall reconnection ejects secondary islands from the vicinity of the X line, implying that energy is released more rapidly during Hall reconnection. Coronal applications are discussed.

  10. Plasma relaxation and topological aspects in Hall magnetohydrodynamics

    SciTech Connect (OSTI)

    Shivamoggi, B. K. [University of Central Florida, Orlando, Florida 32816-1364 (United States)

    2012-07-15T23:59:59.000Z

    Parker's formulation of isotopological plasma relaxation process in magnetohydrodynamics (MHD) is extended to Hall MHD. The torsion coefficient {alpha} in the Hall MHD Beltrami condition turns out now to be proportional to the potential vorticity. The Hall MHD Beltrami condition becomes equivalent to the potential vorticity conservation equation in two-dimensional (2D) hydrodynamics if the Hall MHD Lagrange multiplier {beta} is taken to be proportional to the potential vorticity as well. The winding pattern of the magnetic field lines in Hall MHD then appears to evolve in the same way as potential vorticity lines in 2D hydrodynamics.

  11. Alan Turing, Marshall Hall, and the Alignment

    E-Print Network [OSTI]

    Wright, Francis

    Alan Turing, Marshall Hall, and the Alignment of WW2 Japanese Naval Intercepts Peter W. Donovan M work in all areas, from the Japanese codes to the German Enigma machine which Alan Turing had begun of communications intelligence to the WW2 Allies in the Pacific. Alan Turing's Work on Applied Probability

  12. Hall effect in incompressible magnetic reconnection

    E-Print Network [OSTI]

    Dasso, Sergio

    . Go´mez Instituto de Astronomi´a y Fi´sica del Espacio (IAFE), Departamento de Fi´sica, Facultad de region. Citation: Morales, L. F., S. Dasso, and D. O. Go´mez (2005), Hall effect in incompressible

  13. The practical revised simplex method Julian Hall

    E-Print Network [OSTI]

    Hall, Julian

    The practical revised simplex method Julian Hall School of Mathematics University of Edinburgh January 25th 2007 The practical revised simplex method #12;Overview #12;Overview Part 1: · The mathematics of linear programming #12;Overview Part 1: · The mathematics of linear programming · The simplex method

  14. Air Temperature in the Undulator Hall

    SciTech Connect (OSTI)

    Not Available

    2010-12-07T23:59:59.000Z

    Various analyses have been performed recently to estimate the performance of the air conditioning (HVAC) system planned for the Undulator Hall. This reports summarizes the results and provides an upgrade plan to be used if new requirements are needed in the future. The estimates predict that with the planned loads the tunnel air temperature will be well within the allowed tolerance during normal operation.

  15. 235 Clements Hall Math Department, SMU

    E-Print Network [OSTI]

    Xu, Sheng

    Sheng Xu 235 Clements Hall Math Department, SMU Dallas, TX 75275-0156 (214) 768-2985(O), (214)768-2355(F) sxu@smu.edu http://faculty.smu.edu/sxu computational fluid dynamics and scientific computing (SMU) Engineer, April 2006 - July 2006 Steam Turbine Aerodynamics Group, GE Energy Post

  16. The Quantum Hall Effect in Graphene

    E-Print Network [OSTI]

    Paolo Cea

    2012-04-24T23:59:59.000Z

    We investigate the quantum Hall effect in graphene. We argue that in graphene in presence of an external magnetic field there is dynamical generation of mass by a rearrangement of the Dirac sea. We show that the mechanism breaks the lattice valley degeneracy only for the $n=0$ Landau levels and leads to the new observed $\

  17. Start: Statler Hotel (star) Finish: Upson Hall

    E-Print Network [OSTI]

    Keinan, Alon

    route: Green dashed line that starts from Statler Hotel and meets read line (backwards) at Bailey Hall been accomplished by a pair of local rock climbers. Uris Library (around towards the Slope) o Show west campus, downtown, Cayuga lake Uris Library (inside) o Cornell has 19 libraries which hold more

  18. Welcome to the Faculty of Engineering and Applied Science Beamish Munro Hall

    E-Print Network [OSTI]

    Ellis, Randy

    Hall Tour #3 1:30 pm ­ 2:05 pm 2:10 pm ­ 2:40 pm 2:45 pm ­ 3:30 pm · Engineering Physics, Stirling Hall Tour #1 · Engineering Physics, Stirling Hall Tour #2 · Engineering Physics, Stirling Hall Tour #3 1Welcome to the Faculty of Engineering and Applied Science Beamish Munro Hall 45 Union Street

  19. Fast Camera Imaging of Hall Thruster Ignition

    SciTech Connect (OSTI)

    C.L. Ellison, Y. Raitses and N.J. Fisch

    2011-02-24T23:59:59.000Z

    Hall thrusters provide efficient space propulsion by electrostatic acceleration of ions. Rotating electron clouds in the thruster overcome the space charge limitations of other methods. Images of the thruster startup, taken with a fast camera, reveal a bright ionization period which settles into steady state operation over 50 ?s. The cathode introduces azimuthal asymmetry, which persists for about 30 ?s into the ignition. Plasma thrusters are used on satellites for repositioning, orbit correction and drag compensation. The advantage of plasma thrusters over conventional chemical thrusters is that the exhaust energies are not limited by chemical energy to about an electron volt. For xenon Hall thrusters, the ion exhaust velocity can be 15-20 km/s, compared to 5 km/s for a typical chemical thruster

  20. Fractional Quantum Hall States in Graphene

    E-Print Network [OSTI]

    Ahmed Jellal; Bellati Malika

    2011-04-27T23:59:59.000Z

    We quantum mechanically analyze the fractional quantum Hall effect in graphene. This will be done by building the corresponding states in terms of a potential governing the interactions and discussing other issues. More precisely, we consider a system of particles in the presence of an external magnetic field and take into account of a specific interaction that captures the basic features of the Laughlin series \

  1. Geometric Spin Hall Effect of Light

    E-Print Network [OSTI]

    Andrea Aiello; Christoph Marquardt; Gerd Leuchs

    2009-02-26T23:59:59.000Z

    We describe a novel phenomenon occurring when a polarized Gaussian beam of light is observed in a Cartesian reference frame whose axes are not parallel to the direction of propagation of the beam. Such phenomenon amounts to an intriguing spin-dependent shift of the position of the center of the beam, with manners akin to the spin Hall effect of light. We demonstrate that this effect is unavoidable when the light beam possesses a nonzero transverse angular momentum.

  2. U.S. WRESTLING FEDERATION HALL

    E-Print Network [OSTI]

    Veiga, Pedro Manuel Barbosa

    S-86 S-87 S-36 S-85 S-90 S-75 S-76 HOUSE #6 S-89 S-91 OFFICE CENTER AGRICULTURE U.S.D.A. S-92 S-88. SMITH HALL ALUMNI CENTER HOUSING - JPI PHASE 1 BUILDING 3 HOUSING - JPI PHASE 1 BUILDING 4 STUDENT UNION. LAUNDRY RESOURCE Y CAGE LAB. POULTRY BATTERY LAB. BROODER FIRE TECH. OUTDOOR LAB. MO. LAB. GY CONS. CHAPEL

  3. The Hall D Physics Program at JLab

    SciTech Connect (OSTI)

    Leckey, John P. [Indiana U.

    2012-09-01T23:59:59.000Z

    GlueX is one of the flagship experiments of the 12 GeV era at the Thomas Jefferson National Accelerator Facility (JLab). The energy of the electron accelerator at JLab is presently undergoing an upgrade from 6 GeV to 12 GeV and a 4th experimental hall (Hall D) is being added. The GlueX experimental apparatus consists of a tagged coherent bremsstrahlung photon beam incident on a liquid hydrogen target. The photoproduced mesons, which are created inside of a 2.2 T solenoid, will then pass through a pair of drift chambers and eventually deposit their energy into either of two calorimeters, depending on their respective angles. GlueX will attempt to map out the light meson spectrum and search for meson-gluon hybrids to better understand the confinement of quarks and gluons in quantum chromodynamics (QCD). There is little data on the photoproduction of light mesons and the GlueX experiment will exceed the current photoproduction data by several orders of magnitude in the first year alone. Photoproduction is specifically well suited to search for meson-gluon hybrids because in the flux tube model the production cross-sections are higher for meson-gluon hybrids from photons, with the spins of the virtual quark-antiquark pair aligned, than from other sources such as pions, with the spins of the quark-antiquark pair anti-aligned. There are also other Hall D experiments proposed to look for physics beyond the Standard Model by studying Eta rare or forbidden decay channels such as eta to two neutral pions. The 12 GeV upgrade of the JLab accelerator and the complete physics program of Hall D will be presented.

  4. SCHOOL OF COMPUTING SCIENCE Exam Code Exam Name Day Exam date Time Exam Hall Hall Split

    E-Print Network [OSTI]

    Glasgow, University of

    :00 Room 601 Rankine Building COMPSCI4062_1 Cyber Security 4 Wed 07/05/2014 09:30 - 11:30 Room 201 John Mc5063_1 Cyber Security M Wed 07/05/2014 09:30 - 11:30 Fore Hall COMPSCI4014_1 CS3W:Interactive Systems 3/05/2014 09:30 - 11:30 Fore Hall COMPSCI4019_1 Distributed Algs & Systems 4 Thu 08/05/2014 14:00 - 16

  5. A Satisficing Model for Project Selection Nicholas G. Hall ?† Zhuoyu ...

    E-Print Network [OSTI]

    2009-12-29T23:59:59.000Z

    Dec 29, 2009 ... plemented by maximizing the entropic satisficing measure. Thus, our ...... Using the guidelines of Hall and Posner (2001), (a) we generate a ...

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

    SciTech Connect (OSTI)

    Not Available

    2010-04-01T23:59:59.000Z

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

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

    SciTech Connect (OSTI)

    Not Available

    2010-09-01T23:59:59.000Z

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

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

    Office of Energy Efficiency and Renewable Energy (EERE)

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

  9. Schedule and cost estimate for an innovative Boston Harbor concert hall

    E-Print Network [OSTI]

    Coste, Amelie, 1982-

    2004-01-01T23:59:59.000Z

    This thesis formulates a cost estimate and schedule for constructing the Boston Concert Hall, an innovative hypothetical building composed of two concert halls and a restaurant. Concert Halls are complex and expensive ...

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

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

    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...

  11. Hamerschlag Hall Green Roof Storm Water Retention and Runoff Reduction Performance Lucheng Chen

    E-Print Network [OSTI]

    Andrews, Peter B.

    Hamerschlag Hall Green Roof Storm Water Retention and Runoff Reduction Performance ......................................................................................................................... 2 2. Hamerschlag Hall Green Roof .............................................................................. 13 4. Methods of Storm Analysis and Green Roof Performance Analysis

  12. Hypernuclear spectroscopy program at JLab Hall C

    SciTech Connect (OSTI)

    Hashimoto, Osamu; Hashimoto, Osamu; Nakamura, Satoshi; Acha Quimper, Armando; Ahmidouch, Abdellah; Androic, Darko; Asaturyan, Arshak; Asaturyan, Razmik; Baker, O.; Baturin, Pavlo; Benmokhtar, Fatiha; Bosted, Peter; Carlini, Roger; Chen, X.; Christy, Michael; Cole, Leon; Danagoulian, Samuel; Daniel, AJI; Dharmawardane, Kahanawita; Egiyan, Kim; Elaasar, Mostafa; Ent, Rolf; Fenker, Howard; Fujii, Yu; Furic, Miroslav; Gan, Liping; Gaskell, David; Gasparian, Ashot; Gibson, Edward; Gueye, Paul; Halkyard, Rebekah; Honda, D.; Horn, Tanja; Hu, Bitao; Hu, S.; Hungerford, Ed; Ispiryan, Mikayel; Johnston, Kathleen; Jones, Mark; Kalantarians, Narbe; Kaneta, M.; Kato, F.; Kato, Seigo; Kawama, Daisuke; Keppel, Cynthia; Li, Ya; Luo, Wei; Mack, David; Margaryan, Amur; Marikyan, Gagik; Maruyama, Nayuta; Matsumura, Akihiko; Miyoshi, Toshinobu; Mkrtchyan, Arthur; Mkrtchyan, Hamlet; Navasardyan, Tigran; Niculescu, Gabriel; Niculescu, Maria-Ioana; Nomura, Hiroshi; Nonaka, Kenichi; Ohtani, Atsushi; Okayasu, Yuichi; Pamela, Priscilla; Perez, Naipy; Petkovic, Tomislav; Randeniya, Kapugodage; Reinhold, Joerg; Rivera Castillo, Roberto; Roche, Julie; Rodriguez, Victor; Sato, Yoshinori; Seva, Tomislav; Tang, Liguang; Simicevic, Neven; Smith, Gregory; Sumihama, Mizuki; Song, Y.; Tadevosyan, Vardan; Takahashi, Toshiyuki; Tamura, Hirokazu; Tvaskis, Vladas; Vulcan, William; Wang, B.; Wells, Steven; Yan, Chen; Yuan, Lulin; Zamkochian, S.

    2008-05-01T23:59:59.000Z

    DOI: http://dx.doi.org/10.1016/j.nuclphysa.2008.01.029
    Hypernuclear production by the (e,e?K+) reaction has unique advantages in hypernuclear spectroscopy of the S=?1 regime. The second-generation spectroscopy experiment on 12C, 7Li and 28Si targets has been recently carried out at JLab Hall C with a new experimental configuration (Tilt method) and also using a new high-resolution kaon spectrometer (HKS). The experiment is described and preliminary results are presented together with the empasis of significance of the (e,e?K+) reaction for ? hypernuclear spectroscopy and its future prospects.

  13. Physics program in Hall A at CEBAF

    SciTech Connect (OSTI)

    Saha, A.

    1990-01-01T23:59:59.000Z

    We present here the physics program planned for Hall A at CEBAF. It encompass exclusive as well as inclusive electromagnetic measurements requiring both high precision and accuracy. The program includes measurements of the elementary form factors of the nucleon, systematic studies of the few nucleon systems (d, {sup 3,4}He), high momentum structure of nuclei, their structure at high Q{sup 2} to look for hadronization and quark effects, spin response of nuclei via ({rvec e}, e{prime}{rvec p}) reactions and the study of nuclear pion fields.

  14. Hypernuclei in Hall C | Jefferson Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School footballHydrogen andHypernuclei in Hall C High Resolution

  15. Anthony Kathryn Hall | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-fTriWildcat Place:Alvan2809328°,AnfuNorth,OpenAntaris SolarKathryn Hall

  16. Hall effect at a tunable metal-insulator transition

    E-Print Network [OSTI]

    Teizer, Winfried; Hellman, F.; Dynes, RC.

    2003-01-01T23:59:59.000Z

    Using a rotating magnetic field, the Hall effect in three-dimensional amorphous GdxSi1-x has been measured in the critical regime of the metal-insulator transition for a constant total magnetic field. The Hall coefficient R-0 is negative, indicating...

  17. Hamerschlag Hall Green Roof Project Water Monitoring System

    E-Print Network [OSTI]

    Andrews, Peter B.

    1 Hamerschlag Hall Green Roof Project Water Monitoring System Plans and Specifications Created By: David Carothers Date: 2/17/05 #12;2 Hamerschlag Hall Green Roof Project Date: 2/14/05 Created By: David and the flumes shall be water tight. (Figures 1&2) · The connection between the flume and the green roof membrane

  18. Viscosity of Quantum Hall Fluids J. E. Avron

    E-Print Network [OSTI]

    Viscosity of Quantum Hall Fluids J. E. Avron Department of Physics, Technion, 32000 Haifa, Israel R April 25, 1997 Abstract The viscosity of quantum fluids with an energy gap at zero temperature is non of the parameter space). For a quantum Hall fluid on two dimensional tori this viscosity is computed. In this case

  19. 413 South Hall Bowling Green, OH 43403-0185

    E-Print Network [OSTI]

    Moore, Paul A.

    (Street, City, State, and Zip Code): I , a student at Bowling Green State University give permission413 South Hall Bowling Green, OH 43403-0185 Phone 419-372-8495, TTY 419-372-9455 Fax 419 with specific test results or clinical observations. #12;Page 2 of 4 413 South Hall Bowling Green, OH 43403

  20. Josephson inplane and tunneling currents in bilayer quantum Hall system

    SciTech Connect (OSTI)

    Ezawa, Z. F. [Nishina Center, RIKEN, Saitama 351-0198 (Japan); Tsitsishvili, G. [Georgia Department of Physics, Tbilisi State University, Tbilisi 0179 (Georgia); Sawada, A. [Research Center for Low Temperature and Materials Sciences, Kyoto University, Kyoto 606-8501 (Japan)

    2013-12-04T23:59:59.000Z

    A Bose-Einstein condensation is formed by composite bosons in the quantum Hall state. A composite boson carries the fundamental charge (–e). We investigate Josephson tunneling of such charges in the bilayer quantum Hall system at the total filling ? = 1. We show the existence of the critical current for the tunneling current to be coherent and dissipationless in tunneling experiments with various geometries.

  1. RCP Spring 2011 SPONSORS MEETING PETROLEUM HALL, GREEN CENTER

    E-Print Network [OSTI]

    RCP Spring 2011 SPONSORS MEETING PETROLEUM HALL, GREEN CENTER Colorado School of Mines ­ Friedhoff Hall (Lower Level of Green Center) 1:00 - 2:30 PM Postle Field Reservoir Characterization and Pouce Coupe Fields: Matt Billingsley, CSM and Jared Atkinson, Talisman Energy 3:45 - 5:00 PM

  2. Undulator Hall Air Temperature Fault Scenarios

    SciTech Connect (OSTI)

    Sevilla, J.; Welch, J.; /SLAC; ,

    2010-11-17T23:59:59.000Z

    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.

  3. Cylindrical Hall Thrusters with Permanent Magnets

    SciTech Connect (OSTI)

    Raitses, Yevgeny; Merino, Enrique; Fisch, Nathaniel J.

    2010-10-18T23:59:59.000Z

    The use of permanent magnets instead of electromagnet coils for low power Hall thrusters can offer a significant reduction of both the total electric power consumption and the thruster mass. Two permanent magnet versions of the miniaturized cylindrical Hall thruster (CHT) of different overall dimensions were operated in the power range of 50W-300 W. The discharge and plasma plume measurements revealed that the CHT thrusters with permanent magnets and electromagnet coils operate rather differently. In particular, the angular ion current density distribution from the permanent magnet thrusters has an unusual halo shape, with a majority of high energy ions flowing at large angles with respect to the thruster centerline. Differences in the magnetic field topology outside the thruster channel and in the vicinity of the channel exit are likely responsible for the differences in the plume characteristics measured for the CHTs with electromagnets and permanent magnets. It is shown that the presence of the reversing-direction or cusp-type magnetic field configuration inside the thruster channel without a strong axial magnetic field outside the thruster channel does not lead to the halo plasma plume from the CHT. __________________________________________________

  4. Building Codes for Classrooms 34MK 3401 Market Street JMHH Jon M. Huntsman Hall

    E-Print Network [OSTI]

    Plotkin, Joshua B.

    Building Codes for Classrooms 34MK 3401 Market Street JMHH Jon M. Huntsman Hall 35MK 3550 Market Market Street KWH Kelly Writers House ACHM Anatomy/Chemistry Building L-FH Lauder-Fischer Hall ADDM Fisher-Bennett Hall LIPP Lippincott BLOC Blockley Hall LLAB Leidy Labs CAST Caster Building LRSM Lab

  5. Photonic spin Hall effect in topological insulators

    E-Print Network [OSTI]

    Zhou, Xinxing; Ling, Xiaohui; Chen, Shizhen; Luo, Hailu; Wen, Shuangchun

    2013-01-01T23:59:59.000Z

    In this paper we theoretically investigate the photonic spin Hall effect (SHE) of a Gaussian beam reflected from the interface between air and topological insulators (TIs). The photonic SHE is attributed to spin-orbit coupling and manifests itself as in-plane and transverse spin-dependent splitting. We reveal that the spin-orbit coupling effect in TIs can be routed by adjusting the axion angle variations. Unlike the transverse spin-dependent splitting, we find that the in-plane one is sensitive to the axion angle. It is shown that the polarization structure in magneto-optical Kerr effect is significantly altered due to the spin-dependent splitting in photonic SHE. We theoretically propose a weak measurement method to determine the strength of axion coupling by probing the in-plane splitting of photonic SHE.

  6. Micro-Hall position sensing of magnetic nanowires.

    SciTech Connect (OSTI)

    Mihajlovic, G.; Hoffmann, A.; von Molnar, S.; Materials Science Division; Florida State Univ.

    2009-01-01T23:59:59.000Z

    The Hall voltage output of a micro-Hall magnetic sensor depends on the relative position of a magnetic nanowire with respect to its sensing area. Following this idea, we performed analytical calculations which show that, under certain conditions, these devices can track the position of a magnetic nanowire with subnanometer resolution. Our results suggest that micro-Hall sensors can be utilized to provide a direct electronic readout of the position of magnetic nanowires in their applications as biomolecular manipulators or dynamic components in micro- and nanoscale devices.

  7. accelerator laboratory hall: Topics by E-print Network

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

    Halls Summer Residential Plasma Physics and Fusion Websites Summary: - youth playing sand volleyball or doing sidewalk chalk, picnic set-up at Adams or Ogg) ...and the most,000....

  8. Norm G. Hall Western Australian Marine Research laboratories

    E-Print Network [OSTI]

    Norm G. Hall Western Australian Marine Research laboratories Perth, Western Australia 6020, Western Australia. 61 50. Australia Ian C. Potter* School of Biological and Environmental Sciences, Murdoch University. Murdoch, Western Australia. 6 J50, Australia Comparisons between generalized growth

  9. Replies to Weatherson, Hall, and Lange Michael Strevens

    E-Print Network [OSTI]

    Strevens, Michael

    ; in what follows, I hope to show that Hall's and Lange's contributions as well amount not only to worthy of the outcomes of auctions of oil drilling rights in the Gulf of Mexico, provides a perfect illustration

  10. Fully-kinetic PIC simulations for Hall-effect thrusters

    E-Print Network [OSTI]

    Fox, Justin M., 1981-

    2007-01-01T23:59:59.000Z

    In recent years, many groups have numerically modeled the near-anode region of a Hall thruster in attempts to better understand the associated physics of thruster operation. Originally, simulations assumed a continuum ...

  11. Topological order in the fractional quantum Hall states

    E-Print Network [OSTI]

    Barkeshli, Maissam

    2010-01-01T23:59:59.000Z

    This thesis is focused on the theoretical characterization of topological order in non-Abelian fractional quantum Hall (FQH) states. The first part of the thesis is concerned with the ideal wave function approach to FQH ...

  12. Theoretical and experimental investigation of Hall thruster miniaturization

    E-Print Network [OSTI]

    Warner, Noah Zachary, 1978-

    2007-01-01T23:59:59.000Z

    Interest in small-scale space propulsion continues to grow with the increasing number of small satellite missions, particularly in the area of formation flight. Miniaturized Hall thrusters have been identified as a candidate ...

  13. Hall viscosity and angular momentum in gapless holographic models

    E-Print Network [OSTI]

    Liu, Hong

    We use the holographic approach to compare the Hall viscosity ?[subscript H] and the angular momentum density J in gapless systems in 2 + 1 dimensions at finite temperature. We start with a conformal fixed point and turn ...

  14. 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...

  15. High-frequency Probing Diagnostic for Hall Current Plasma Thrusters

    SciTech Connect (OSTI)

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

    2001-10-25T23:59:59.000Z

    High-frequency oscillations (1-100 MHz) in Hall thrusters have apparently eluded significant experimental scrutiny. A diagnostic setup, consisting of a single Langmuir probe, a special shielded probe connector-positioner, and an electronic impedance-matching circuit, was successfully built and calibrated. Through simultaneous high-frequency probing of the Hall thruster plasma at multiple locations, high-frequency plasma waves have been identified and characterized for various thruster operating conditions.

  16. Hall MHD reconnection in cometary magnetotail

    SciTech Connect (OSTI)

    Jovanovic, Dusan [Institute of Physics, P. O. Box 57, 11001 Belgrade (Serbia and Montenegro); Shukla, Padma Kant [Institut fuer Theoretische Physik IV, Fakultaet fuer Physik und Astronomie, Ruhr-UniverAIP confrence style sitaet Bochum, D-44780 Bochum (Germany); Morfill, Gregor [Max-Planck-Institut fuer Extraterrestrische Physik, D-85740 Garching (Germany)

    2005-10-31T23:59:59.000Z

    The fine structure of cometary tails (swirls, loops and blobs) is studied in the framework of resistive magnetic reconnection without a guide field in a dusty plasma. For a high-beta plasma ({beta} {approx} 1) consisting of electrons, ions, and immobile dust grains, a two-fluid description is used to study electromagnetic perturbations with the frequency below {omega}i, propagating at an arbitrary angle, and including the effects of Hall current. A zero-order current associated with the anti-parallel magnetic configuration may exist even in the limit of zero plasma temperature in a dusty plasma due to a symmetry breaking between electrons and ions by dust grains that yields an E-vector x B-vector current. In the perturbed state, a new linear electromagnetic mode is found in dusty plasma which is evanescent below the Rao cut-off frequency and has the characteristic wavelength comparable to the ion skin depth, which enables the reconnection at short spatial scales. The role of the dust is found to be twofold, yielding a new mode outside of the current sheet and altering the continuity conditions at its edge by an inhomogeneous Doppler shift associated with the E-vector x B-vector current.

  17. The integer quantum hall effect revisited

    SciTech Connect (OSTI)

    Michalakis, Spyridon [Los Alamos National Laboratory; Hastings, Matthew [Q STATION, CALIFORNIA

    2009-01-01T23:59:59.000Z

    For T - L x L a finite subset of Z{sup 2}, let H{sub o} denote a Hamiltonian on T with periodic boundary conditions and finite range, finite strength intetactions and a unique ground state with a nonvanishing spectral gap. For S {element_of} T, let q{sub s} denote the charge at site s and assume that the total charge Q = {Sigma}{sub s {element_of} T} q{sub s} is conserved. Using the local charge operators q{sub s}, we introduce a boundary magnetic flux in the horizontal and vertical direction and allow the ground state to evolve quasiadiabatically around a square of size one magnetic flux, in flux space. At the end of the evolution we obtain a trivial Berry phase, which we compare, via a method reminiscent of Stokes Theorem. to the Berry phase obtained from an evolution around an exponentially small loop near the origin. As a result, we show, without any averaging assumption, that the Hall conductance is quantized in integer multiples of e{sup 2}/h up to exponentially small corrections of order e{sup -L/{zeta}}, where {zeta}, is a correlation length that depends only on the gap and the range and strength of the interactions.

  18. TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ conference@trinhall.cam.ac.uk 01223 764444

    E-Print Network [OSTI]

    Lasenby, Joan

    TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ conference@trinhall.cam.ac.uk 01223 764444 TRINITY HALL, minerally too with subtle nutty oak on a long finish. 1 #12;TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ

  19. Optical detection of spin Hall effect in metals

    SciTech Connect (OSTI)

    Erve, O. M. J. van ‘t, E-mail: Olaf.Vanterve@nrl.navy.mil; Hanbicki, A. T.; McCreary, K. M.; Li, C. H.; Jonker, B. T. [Materials Science and Technology Division, Naval Research Laboratory, Washington, DC 20375 (United States)

    2014-04-28T23:59:59.000Z

    Optical techniques have been widely used to probe the spin Hall effect in semiconductors. In metals, however, only electrical methods such as nonlocal spin valve transport, ferromagnetic resonance, or spin torque transfer experiments have been successful. These methods require complex processing techniques and measuring setups. We show here that the spin Hall effect can be observed in non-magnetic metals such as Pt and ?-W, using a standard bench top magneto-optical Kerr system with very little sample preparation. Applying a square wave current and using Fourier analysis significantly improve our detection level. One can readily determine the angular dependence of the induced polarization on the bias current direction (very difficult to do with voltage detection), the orientation of the spin Hall induced polarization, and the sign of the spin Hall angle. This optical approach is free from the complications of various resistive effects, which can compromise voltage measurements. This opens up the study of spin Hall effect in metals to a variety of spin dynamic and spatial imaging experiments.

  20. Fundamental Difference between the Two Variants of Hall Thrusters: SPT and TAL

    E-Print Network [OSTI]

    Choueiri, Edgar

    , 3]. At this early date in its history, the device was simply called a Hall current ion accel- erator magnetic field and typical particle trajectories. a substantial resurge in interest[12] in Hall thrusters

  1. 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)

    2012-09-15T23:59:59.000Z

    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.

  2. D0 Detector Collision Hall Oxygen Deficiancy Hazard Analysis

    SciTech Connect (OSTI)

    Wu, J.; /Fermilab

    1992-08-06T23:59:59.000Z

    EN-258, D0 Platform ODH Analysts. provided the oxygen deficiency hazard analysts for the D0 detector in the Assembly Hall. This note covers the same analysis. but revised for the Collision Hall. Liquid cryogens. released and warming to atmosphere conditions, expand to, on average, seven hundred times their liquid volume, and displace vital atmospheric oxygen. An oxygen deficiency hazard analysis assesses the increased risk to personnel in areas containing cryogenic systems. The D0 detector Collision Hall ODH analysis has been approached five different ways using established methods. If the low beta quad magnets are powered, and the exhaust rate is below 4220 scfm, the area is ODH class 1. In any other case, the analysis shows the area to be ODH class 0 as equipped (with ventilation fans) and requiring no special safety provisions. System designers have provided for a reduced oxygen level detection and warning system as well as emergency procedures to address fault conditions.

  3. Novel Hall sensors developed for magnetic field imaging systems.

    SciTech Connect (OSTI)

    Cambel, V.; Karapetrov, G.; Novosad, V.; Bartolome, E.; Gregusova, D.; Fedor, J.; Kudela, R.; Soltys, J.; Materials Science Division; Slovak Academy of Sciences; Univ. Autonoma de Barcelona

    2007-09-01T23:59:59.000Z

    We report here on the fabrication and application of novel planar Hall sensors based on shallow InGaP/AlGaAs/GaAs heterostructure with a two-dimensional electron gas (2DEG) as an active layer. The sensors are developed for two kinds of experiments. In the first one, magnetic samples are placed directly on the Hall sensor. Room temperature experiments of permalloy objects evaporated onto the sensor are presented. In the second experiment, the sensor scans close over a multigranular superconducting sample prepared on a YBCO thin film. Large-area and high-resolution scanning experiments were performed at 4.2 K with the Hall probe scanning system in a liquid helium flow cryostat.

  4. An edition of Hall Caine's The Demon Lover

    E-Print Network [OSTI]

    Linnstaedter, Joan

    1993-01-01T23:59:59.000Z

    became the seat of the baronet of his line. He was made a Knight of Her Royal Court in 1918. Hall Caine was a very popular novelist during his own lifetime? popular enough to make his living by writing ? but shortly after his death (31 August 1931... beneath the names of the plays, also in all caps. Short gold lines of approximately half an inch are centered between each of the titles as they are listed. In the very center of the cover Hall Caine appears in the same size caps as the titles...

  5. Electric control of the spin Hall effect by intervalley transitions

    E-Print Network [OSTI]

    Okamoto, N.; Kurebayashi, H.; Trypiniotis, T.; Farrer, I.; Ritchie, D. A.; Saitoh, E.; Sinova, J.; Mašek, J.; Jungwirth, T.; Barnes, C. H. W.

    2014-08-10T23:59:59.000Z

    tunability of the creation/detection efficiency of spin currents, with clear relevance for future memory and logic devices. 8 I. METHODS A. Measurement The sample structure used in this study is Si-doped (the initial electron density n0e=1.01×1016 cm?3) n... ., & Jungwirth T. Spin-injection Hall effect in a planar photovoltaic cell Nature Phys. 5, 675 (2009). 24 Wunderlich, J., Park, B. G., Irvine, A. C., Zarbo, L. P. , Rozkotova, E., Nemec, P., Novak, V., Sinova, J., & Jungwirth, T. Spin Hall effect transistor...

  6. Gauge Potential Formulations of the Spin Hall Effect in Graphene

    E-Print Network [OSTI]

    O. F. Dayi; E. Yunt

    2011-05-27T23:59:59.000Z

    Two different gauge potential methods are engaged to calculate explicitly the spin Hall conductivity in graphene. The graphene Hamiltonian with spin-orbit interaction is expressed in terms of kinematic momenta by introducing a gauge potential. A formulation of the spin Hall conductivity is established by requiring that the time evolution of this kinematic momentum vector vanishes. We then calculated the conductivity employing the Berry gauge fields. We show that both of the gauge fields can be deduced from the pure gauge field arising from the Foldy-Wouthuysen transformations.

  7. Nanoconstriction-based spin-Hall nano-oscillator

    SciTech Connect (OSTI)

    Demidov, V. E., E-mail: demidov@uni-muenster.de [Department of Physics and Center for Nonlinear Science, University of Muenster, Corrensstr. 2-4, 48149 Muenster (Germany); Urazhdin, S.; Zholud, A. [Department of Physics, Emory University, 400 Dowman Dr., Atlanta, Georgia 30322 (United States); Sadovnikov, A. V. [Department of Physics and Center for Nonlinear Science, University of Muenster, Corrensstr. 2-4, 48149 Muenster (Germany); Saratov State University, 83 Astrakhanskaya str., Saratov 410012 (Russian Federation); Demokritov, S. O. [Department of Physics and Center for Nonlinear Science, University of Muenster, Corrensstr. 2-4, 48149 Muenster (Germany); Institute of Metal Physics, Ural Division of RAS, Yekaterinburg 620041 (Russian Federation)

    2014-10-27T23:59:59.000Z

    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.

  8. HIGH ACCURACY BEAM CURRENT MONITOR SYSTEM FOR CEBAF'S EXPERIMENTAL HALL A *

    E-Print Network [OSTI]

    HIGH ACCURACY BEAM CURRENT MONITOR SYSTEM FOR CEBAF'S EXPERIMENTAL HALL A * J.-C. Denard , A. Saha CEBAF accelerator delivers continuous wave (CW) electron beams to three experimental Halls. In Hall A is described. 1 INTRODUCTION The CEBAF accelerator delivers continuous wave (CW) electron beams to three

  9. PUBLICATIONS OF CHARLES A.S. HALL {Chronological} as of October 2012. Books are in bold.

    E-Print Network [OSTI]

    Hall, Charles A.S.

    -21. 12. Hall, C.A.S. 1975. Models and the decision-making process: The Hudson River power plant case Productivity of the Biosphere. Springer-Verlag, New York. 15. (Review) Hall, C.A.S. 1975. Electric Power Plants.A. and C.A.S. Hall. 1972. Systems Analysis and Simulation in Ecology, Vol. 1 edited by B.C. Patten

  10. Take a seat... Development Office, Trinity Hall, Cambridge, CB2 1TJ

    E-Print Network [OSTI]

    Lasenby, Joan

    Take a seat... Take a seat... Development Office, Trinity Hall, Cambridge, CB2 1TJ www.trinhall.cam.ac.uk fundraising@trinhall.cam.ac.uk Tel: 01223 766345 Fax: 01223 765157 Trinity Hall Cambridge registered charity the chair. GIFT AID DECLARATION I would like Trinity Hall, Cambridge to treat all donations that I have made

  11. Physics & Astronomy Open House Schedule UH Manoa Watanabe Hall

    E-Print Network [OSTI]

    Physics & Astronomy Open House Schedule UH Manoa Watanabe Hall 22 November 2014 0830 - 1245 *** Physics & Astronomy info. available at www.phys.hawaii.edu *** Welcome & Overview: Prof. Pui Lam in Physical Science 217 at 0830 ** schedules for groups 1 to 10 below for 0900-1100 ** **solar observing

  12. BREAK HOUSING HALLS NOTICE FOR SPRING SEMESTER HOUSING

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    BREAK HOUSING HALLS NOTICE FOR SPRING SEMESTER HOUSING BRETT | LEWIS | PRINCE | CASHIN NORTH AREA APARTMENTS #12;If you are cancelling your Break Housing assignment for the spring semester, you have two will receive a $100 refund of the Break Housing fee to your fall Bursar account. 2. If you remain beyond 6:00pm

  13. The practical revised simplex method (Part 2) Julian Hall

    E-Print Network [OSTI]

    Hall, Julian

    The practical revised simplex method (Part 2) Julian Hall School of Mathematics University of Edinburgh January 25th 2007 The practical revised simplex method #12;Overview (Part 2) · Practical implementation of the revised simplex method Representation of B-1 #12;Overview (Part 2) · Practical

  14. The future of the simplex method Julian Hall

    E-Print Network [OSTI]

    Hall, Julian

    The future of the simplex method Julian Hall School of Mathematics University of Edinburgh 29th June 2010 The future of the simplex method #12;Overview · Linear programming Introduction Mathematics · Simplex method Algorithm Standard simplex method Revised simplex method · State of the art Hyper

  15. ENGINEERS' DAY 2011 ACTIVITIES 1800 Engineering Hall, 1415 Engineering Drive

    E-Print Network [OSTI]

    Sheridan, Jennifer

    ENGINEERS' DAY 2011 ACTIVITIES 1800 Engineering Hall, 1415 Engineering Drive 5:30 SOCIAL HOUR · Distinguished Achievement Awards · Early-Career Achievement Award · College of Engineering faculty and staff, Chair, E-Day Committee Department of Biomedical Engineering 8:50 COLLEGE UPDATE Dean Paul S. Peercy

  16. Environmental Research Group 2014 Fall Seminar Series, Gregg Hall 320

    E-Print Network [OSTI]

    Environmental Research Group 2014 Fall Seminar Series, Gregg Hall 320 September 26, 2014, 12:00 ­ 1 and environmental impact. This presentation will describe results in non-covalent derivatization and bioinspired care products, solar energy and construction and paving materials are examples of how green chemistry

  17. Math for Poets and Drummers Rachel Wells Hall

    E-Print Network [OSTI]

    Hall, Rachel W.

    Math for Poets and Drummers Rachel Wells Hall Department of Mathematics and Computer Science Saint a meter, is a pattern of stressed and unstressed syllables. English poets use about a dozen different line and "these" in the third line refer to the critics.) 1 #12;But most by Numbers judge a Poet's Song

  18. Security Metrology and the Monty Hall Problem Bennet S. Yee

    E-Print Network [OSTI]

    Yee, Bennet

    Security Metrology and the Monty Hall Problem Bennet S. Yee April 2, 2001 Abstract Evaluating computing systems and classifying them by the security properties they provide is not new [13, 14]. Other researchers [8, 9] have pointed out the difficulty of evaluating security and the apparent binary nature

  19. Security Metrology and the Monty Hall Problem Bennet S. Yee

    E-Print Network [OSTI]

    Yee, Bennet

    Security Metrology and the Monty Hall Problem Bennet S. Yee April 2, 2001 Abstract Evaluating computing systems and classifying them by the security properties they provide is not new [13, 14]. Other researchers [8, 9] have pointed out the diÆculty of evaluating security and the apparent binary nature

  20. Strong Correlation Effects in Graphene in the Quantum Hall Regime

    E-Print Network [OSTI]

    Paris-Sud 11, Université de

    Strong Correlation Effects in Graphene in the Quantum Hall Regime Mark Oliver Goerbig 16 June 2008;Graphene = 2D Graphite 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 degeneracy: spin valley Energy electrons holes k k k ky x x yK' K K' K K K' #12;Correlations in graphene

  1. Valuing Stocksg Copyright 2011 Pearson Prentice Hall. All rights reserved.

    E-Print Network [OSTI]

    Schubart, Christoph

    flows are risky, we must discount them at the equity cost of capital. Copyright © 2011 Pearson Prentice of the stock price to estimates of those two factors. Copyright © 2011 Pearson Prentice Hall. All rights to estimate stock value10. Use comparable firm multiples to estimate stock value. Copyright © 2011 Pearson

  2. UC BERKELEY RETIREMENT CENTER NEWSLETTER 2 Boalt Hall, #7200

    E-Print Network [OSTI]

    Alvarez-Cohen, Lisa

    UC BERKELEY RETIREMENT CENTER NEWSLETTER CONTACT US 2 Boalt Hall, #7200 Berkeley, CA 94720-7200 Tel their proposal for a Retirement Center that would include programs and services for all retired Berkeley faculty in 1990. If not for those early efforts and the spirit of collaboration that still guides its growth

  3. UC BERKELEY RETIREMENT CENTER NEWSLETTER 2 Boalt Hall, #7200

    E-Print Network [OSTI]

    Alvarez-Cohen, Lisa

    UC BERKELEY RETIREMENT CENTER NEWSLETTER CONTACT US 2 Boalt Hall, #7200 Berkeley, CA 94720-7200 Tel Director It is hard to believe that the Retirement Center is beginning the tenth year of its expanded Associations at Cal in the late 70's and early 80's were also instrumental in developing a support structure

  4. RCP Fall 2011 SPONSORS MEETING PETROLEUM HALL, GREEN CENTER

    E-Print Network [OSTI]

    Back into Seismic Interpretation 12:00 - 1:00 PM Lunch Friedhoff Hall 1:00 - 1:30 PM David Hays Seismic: The Business Value Challenge: Alex Martinez and Mike Matheney, ExxonMobil 9:45 - 10:00 AM Delhi Field Time-Lapse Multicomponent Seismic Acquisition: Randy Luckiw and Jeff Hislop, Tesla-Conquest 10

  5. Energy Efficiency in Low Voltage Hall Thrusters Jerry L. Ross

    E-Print Network [OSTI]

    King, Lyon B.

    Energy Efficiency in Low Voltage Hall Thrusters Jerry L. Ross Lyon B. King Energy efficiency/s of xenon. Acceleration and current efficiencies were compared to thrust efficiency over a range of magnet coil current values of 0 A - 2.5 A. Acceleration efficiencies were obtained with a 4-grid Retarding

  6. The Rockefeller University Office of Technology Transfer 502 Founders Hall

    E-Print Network [OSTI]

    The Rockefeller University Office of Technology Transfer 502 Founders Hall 1230 York Avenue New Technology Summary Scientists use digital holographic microscopy for the collection of three-dimensional information about a sample or object of interest. Digital holography is typically expensive, with high costs

  7. WILLARD O. EDDY HALL REVITALIZATION April 10, 2012

    E-Print Network [OSTI]

    Hall Revitalization 4/10/2012 Estimated Costs Remarks Site Survey, Geotechnical $ - Consultants Facilities Project Management $ 140,000 Independent Code Review/Commissioning $ 50,000 Total Professional Project Cost / sqft 99$ COLORADO STATE UNIVERSITY Facilities Planning Design and Construction Subtotal

  8. HALL OF FAME ($10,000+) Thomas A. Andruskevich '73

    E-Print Network [OSTI]

    Napier, Terrence

    HALL OF FAME ($10,000+) Thomas A. Andruskevich '73 Anonymous Bayne Belair '13P ++ Scott A. Belair ++ Eugenia L. Eby '05P '10P ++ Scott A. Edwards '83 ++ Robert J. Esposito '95 ++ Scott V. Fainor Fidelity '67 ++ Kevin L. Clayton '84 '13P ++ Lisa A. Clayton '13P ++ Kenneth F. Clifford '78 ++ William W

  9. Hall of Honor 2014: Pursuing Explanations, Discovering Robert Brooks

    E-Print Network [OSTI]

    Buehrer, R. Michael

    , and in education that inquiry must be guided by practicality, and that technological progress is useless without that inquiry must be guided by practicality, and that technological progress is useless without a dedication, but there is something more about his experience that earns his recognition in the Foundry Management & Technology Hall

  10. Magnetic Catalysis and Quantum Hall Ferromagnetism in Weakly Coupled Graphene

    E-Print Network [OSTI]

    Gordon W. Semenoff; Fei Zhou

    2011-04-25T23:59:59.000Z

    We study the realization in a model of graphene of the phenomenon whereby the tendency of gauge-field mediated interactions to break chiral symmetry spontaneously is greatly enhanced in an external magnetic field. We prove that, in the weak coupling limit, and where the electron-electron interaction satisfies certain mild conditions, the ground state of charge neutral graphene in an external magnetic field is a quantum Hall ferromagnet which spontaneously breaks the emergent U(4) symmetry to U(2)XU(2). We argue that, due to a residual CP symmetry, the quantum Hall ferromagnet order parameter is given exactly by the leading order in perturbation theory. On the other hand, the chiral condensate which is the order parameter for chiral symmetry breaking generically obtains contributions at all orders. We compute the leading correction to the chiral condensate. We argue that the ensuing fermion spectrum resembles that of massive fermions with a vanishing U(4)-valued chemical potential. We discuss the realization of parity and charge conjugation symmetries and argue that, in the context of our model, the charge neutral quantum Hall state in graphene is a bulk insulator, with vanishing longitudinal conductivity due to a charge gap and Hall conductivity vanishing due to a residual discrete particle-hole symmetry.

  11. Environmental Philosophy and Policy Office: 402 Stratton Hall

    E-Print Network [OSTI]

    Syllabus LAIS 421 Environmental Philosophy and Policy Office: 402 Stratton Hall Instructor: Sandy environmental issues, as well as examine the complexity of the issues themselves. Such analyses rest on critical reading, familiarity with fundamental concepts that drive environmental arguments, and the ability

  12. D0 Detector Assemble Hall Platform Oxygen Deficiency Hazard Analysis

    SciTech Connect (OSTI)

    Clark, D.; Michael, J.; /Fermilab

    1991-01-29T23:59:59.000Z

    Liquid cryogens, released and warming to atmosphere conditions, expand to, on average, seven hundred times their liquid volume, and displace vital atmospheric oxygen. An oxygen deficiency hazard analysis assesses the increased risk to personnel in areas containing cryogenic systems. The D0 detector platform area ODH analysis has been approached four different ways using established methods. In each case, the analysis shows the platform area to be ODH class 0 as equipped (with ventilation fans) and requiring no special safety provisions. System designers have provided for a reduced oxygen level detection and warning system as well as emergency procedures to address fault conditions. The Oxygen Deficiency Hazard of any particular area is defined by these parameters: the nature of the accidental supply of inert gas (probability of occurrence and quantity then released), the area's volume, the area's ventilation rate, and to a small degree the elevation of the area. Once this information is assembled, the ODH classification can be determined through standardized calculations. The platform area under the D0 detector contains much of the cryogenic and gas system piping necessary for the D0 experiment. Prior to moving the detector into the Collision Hall, the liquid argon calorimeters are cooled down and operated in the Assembly Hall. The first phase of this operation involved the cooldown of the Central Calorimeter, which was done in February 1991. This engineering note assesses the increased risk to personnel in the platform level to a reduced oxygen atmosphere during the cool down and subsequent operation of the calorimeters in the Assembly Hall. In addition, it outlines the steps taken to warn personnel of an emergency and to direct the subsequent evacuation. This note analyses only the Assembly Hall area. A similar engineering note, EN-332, covers the analysis of the Collision Hall area.

  13. arXiv:cond-mat/0406436v118Jun2004 Charge-Hall effect driven by spin force: reciprocal of the spin-Hall effect

    E-Print Network [OSTI]

    Niu, Qian

    numbers: 72.10.Bg, 72.20.Dp, 73.63.Hs The generation of an electric current in the transverse direction, other variants, such as the thermal Hall effect[3], can manifest when the longitudi- nal electric field of an electric field is known as a Hall effect. The transverse force is usually provided by the Lorentz force

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

    SciTech Connect (OSTI)

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

    2009-04-24T23:59:59.000Z

    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.

  15. Topology-induced phase transitions in quantum spin Hall lattices

    SciTech Connect (OSTI)

    Bercioux, D.; Goldman, N.; Urban, D. F. [Freiburg Institute for Advanced Studies, Albert-Ludwigs-Universitaet, D-79104 Freiburg, Germany and Physikalisches Institut, Albert-Ludwigs-Universitaet, D-79104 Freiburg (Germany); Center for Nonlinear Phenomena and Complex Systems, UniversitAlbert-Ludwigs-Universitaet Libre de Bruxelles (U.L.B.), Code Postal 231, Campus Plaine, B-1050 Brussels (Belgium); Physikalisches Institut, Albert-Ludwigs-Universitaet, D-79104 Freiburg (Germany)

    2011-02-15T23:59:59.000Z

    Physical phenomena driven by topological properties, such as the quantum Hall effect, have the appealing feature that they are robust with respect to external perturbations. Lately, a new class of materials has emerged that manifests topological properties at room temperature and without the need of external magnetic fields. These topological insulators are band insulators with large spin-orbit interactions and exhibit the quantum spin-Hall (QSH) effect. Here we investigate the transition between QSH and normal insulating phases under topological deformations of a two-dimensional lattice. We demonstrate that the QSH phase present in the honeycomb lattice loses its robustness as the occupancy of extra lattice sites is allowed. Furthermore, we propose a method for verifying our predictions with fermionic cold atoms in optical lattices. In this context, the spin-orbit interaction is engineered via an appropriate synthetic gauge field.

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

    SciTech Connect (OSTI)

    Jiang, Xiaodong [LANL

    2013-10-01T23:59:59.000Z

    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.

  17. 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. [A. F. Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 194021 St. Petersburg (Russian Federation); Galperin, Y. M. [Department of Physics, University of Oslo, P.O. Box 1048 Blindern, 0316 Oslo (Norway); A. F. Ioffe Physical-Technical Institute of the Russian Academy of Sciences, 194021 St. Petersburg (Russian Federation); Kummer, M.; Känel, H. von [Laboratorium für Festkörperphysik ETH Zürich, CH-8093 Zürich (Switzerland)

    2014-10-21T23:59:59.000Z

    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.

  18. Supersymmetry and Unconventional Quantum Hall Effect in Graphene

    E-Print Network [OSTI]

    Motohiko Ezawa

    2006-06-03T23:59:59.000Z

    We present a unified description of the quantum Hall effect in graphene on the basis of the 8-component Dirac Hamiltonian and the supersymmetric (SUSY) quantum mechanics. It is remarkable that the zero-energy state emerges because the Zeeman splitting is exactly as large as the Landau level separation, as implies that the SUSY is a good symmetry. For nonzero energy states, the up-spin state and the down-spin state form a supermultiplet possessing the spin SU(2) symmetry. We extend the Dirac Hamiltonian to include two indices $j_{\\uparrow}$ and $j_{\\downarrow}$, characterized by the dispersion relation $E(p) \\propto p^{j_{\\uparrow}+j_{\\downarrow}}$ and the Berry phase $\\pi (j_{\\uparrow}-j_{\\downarrow})$. The quantized Hall conductivity is shown to be $\\sigma_{xy}=\\pm (2n+j_{\\uparrow}+j_{\\downarrow}) 2e^{2}/h$.

  19. Excitonic gap, phase transition, and quantum Hall effect in graphene

    E-Print Network [OSTI]

    V. P. Gusynin; V. A. Miransky; S. G. Sharapov; I. A. Shovkovy

    2006-11-23T23:59:59.000Z

    We suggest that physics underlying the recently observed removal of sublattice and spin degeneracies in graphene in a strong magnetic field describes a phase transition connected with the generation of an excitonic gap. The experimental form of the Hall conductivity is reproduced and the main characteristics of the dynamics are described. Predictions of the behavior of the gap as a function of temperature and a gate voltage are made.

  20. Gradient instabilities of electromagnetic waves in Hall thruster plasma

    SciTech Connect (OSTI)

    Tomilin, Dmitry [Department of Electrophysics, Keldysh Research Centre, Moscow 125438 (Russian Federation)

    2013-04-15T23:59:59.000Z

    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.

  1. Mode transition of a Hall thruster discharge plasma

    SciTech Connect (OSTI)

    Hara, Kentaro, E-mail: kenhara@umich.edu; Sekerak, Michael J., E-mail: msekerak@umich.edu; Boyd, Iain D.; Gallimore, Alec D. [University of Michigan, Ann Arbor, Michigan 48109 (United States)

    2014-05-28T23:59:59.000Z

    A Hall thruster is a cross-field plasma device used for spacecraft propulsion. An important unresolved issue in the development of Hall thrusters concerns the effect of discharge oscillations in the range of 10–30?kHz on their performance. The use of a high speed Langmuir probe system and ultra-fast imaging of the discharge plasma of a Hall thruster suggests that the discharge oscillation mode, often called the breathing mode, is strongly correlated to an axial global ionization mode. Stabilization of the global oscillation mode is achieved as the magnetic field is increased and azimuthally rotating spokes are observed. A hybrid-direct kinetic simulation that takes into account the transport of electronically excited atoms is used to model the discharge plasma of a Hall thruster. The predicted mode transition agrees with experiments in terms of the mean discharge current, the amplitude of discharge current oscillation, and the breathing mode frequency. It is observed that the stabilization of the global oscillation mode is associated with reduced electron transport that suppresses the ionization process inside the channel. As the Joule heating balances the other loss terms including the effects of wall loss and inelastic collisions, the ionization oscillation is damped, and the discharge oscillation stabilizes. A wide range of the stable operation is supported by the formation of a space charge saturated sheath that stabilizes the electron axial drift and balances the Joule heating as the magnetic field increases. Finally, it is indicated from the numerical results that there is a strong correlation between the emitted light intensity and the discharge current.

  2. Robert O. Hall, Jr. Jan 2010 Associate Professor

    E-Print Network [OSTI]

    Hall Jr., Robert O.

    . Peterson, J. L. Meyer, W. H. McDowell, S. L. Johnson, S. K. Hamilton, N. B. Grimm, S. V. Gregory, C. N. Dahm, S. V. Gregory, S. L. Johnson, J. L. Meyer, B. J. Peterson, G. C. Poole, H. M. Valett, J. R: 666-680. Solomon, C., E. R. Hotchkiss, J. Moslemi, A. J. Ulseth, E. Stanley, R. O. Hall, and A. S

  3. Magnetic shielding of a laboratory Hall thruster. II. Experiments

    SciTech Connect (OSTI)

    Hofer, Richard R., E-mail: richard.r.hofer@jpl.nasa.gov; Goebel, Dan M.; Mikellides, Ioannis G.; Katz, Ira [Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91109 (United States)

    2014-01-28T23:59:59.000Z

    The physics of magnetic shielding in Hall thrusters were validated through laboratory experiments demonstrating essentially erosionless, high-performance operation. The magnetic field near the walls of a laboratory Hall thruster was modified to effectively eliminate wall erosion while maintaining the magnetic field topology away from the walls necessary to retain efficient operation. Plasma measurements at the walls validate our understanding of magnetic shielding as derived from the theory. The plasma potential was maintained very near the anode potential, the electron temperature was reduced by a factor of two to three, and the ion current density was reduced by at least a factor of two. Measurements of the carbon backsputter rate, wall geometry, and direct measurement of plasma properties at the wall indicate that the wall erosion rate was reduced by a factor of 1000 relative to the unshielded thruster. These changes effectively eliminate wall erosion as a life limitation in Hall thrusters, enabling a new class of deep-space missions that could not previously be attempted.

  4. Magnetic Field Evolution in Neutron Star Crusts due to the Hall Effect and Ohmic Decay

    E-Print Network [OSTI]

    Andrew Cumming; Phil Arras; Ellen G. Zweibel

    2004-02-17T23:59:59.000Z

    We present calculations of magnetic field evolution by the Hall effect and Ohmic decay in neutron star crusts. We first discuss when and for which neutron stars the Hall effect is important relative to Ohmic decay. We compute the evolution of an initial field distribution by Ohmic decay, and give approximate analytic formulas for both the surface and interior fields as a function of time. We then discuss the subsequent evolution by the Hall effect, giving several examples which illustrate how the field configuration evolves. Hall wave eigenfunctions are computed, including the effect of the large density change across the crust. We estimate the response of the crust to the magnetic stresses induced by Hall waves, and give a detailed discussion of the boundary conditions at the solid-liquid interface. Finally, we discuss the implications for the Hall cascade proposed by Goldreich & Reisenegger.

  5. Physics and modeling of an end-Hall (gridless) ion source

    SciTech Connect (OSTI)

    Oudini, N. [Universite de Toulouse, UPS, INPT, LAPLACE (Laboratoire Plasma et Conversion d'Energie), 118 route de Narbonne, F-31062 Toulouse cedex 9 (France); Hagelaar, G. J. M.; Boeuf, J.-P.; Garrrigues, L. [Universite de Toulouse, UPS, INPT, LAPLACE (Laboratoire Plasma et Conversion d'Energie), 118 route de Narbonne, F-31062 Toulouse cedex 9 (France); CNRS, LAPLACE, F-31062 Toulouse (France)

    2011-04-01T23:59:59.000Z

    In an end-Hall source, an ion beam is extracted from a magnetized plasma and accelerated by the plasma electric field without grids. The principle of end-Hall sources is similar to that of Hall effect thrusters (or closed-drift thrusters), but their design is optimized for processing applications (ion beam assisted deposition or substrate cleaning) rather than propulsion. The beam divergence is larger in end-Hall ion sources, and these sources can operate at low ion energies. Although end-Hall sources are commonly used in the surface processing industry, no detailed modeling of these sources is available, and their operation is quite empirical. In this paper, a self-consistent, two-dimensional, quasineutral model of an end-Hall ion source is developed and used in order to improve the understanding of the basic physics of these plasma sources and to quantify the parameters controlling the properties of the extracted ion beam.

  6. Degree Year Name Position Organization Location 1997 Andrew Hall Research Director Siemens St. Louis

    E-Print Network [OSTI]

    Stormo, Gary

    Degree Year Name Position Organization Location 1997 Andrew Hall Research Director Siemens St Hongyu An Faculty UNC Chapel Hill, NC 2001 Randolph Setser Manager Research CollaborationsSiemens

  7. Recents results and future measurements for few body problems in Hall A

    SciTech Connect (OSTI)

    Alexandre Camsonne

    2011-08-01T23:59:59.000Z

    I will summarize the latest results in Hall A linked to Few-Body problems and the future measurements planned after the 12 GeV upgrade.

  8. A photon calorimeter using lead tungstate crystals for the CEBAF Hall A Compton polarimeter

    E-Print Network [OSTI]

    D. Neyret; T. Pussieux

    1999-07-25T23:59:59.000Z

    The performances of the calorimeter of the Jlab Hall A Compton Polarimeter have been measured using the Mainz tagged photon beam.

  9. Earl Oxford Hall: A Brief Biography and Wartime History

    E-Print Network [OSTI]

    Hall, Hal W.

    2008-07-17T23:59:59.000Z

    the lead element pilots are named in the mission reports. On July 19, 1942, Captain Hall, with his crew and several others, left for New Caledonia. The route followed is shown in a map of the South Pacific (Map 1). The planes flew form Hawaii..., Military Services Information Project 77 4 Appendix 16: USAAF Missing Air Crew Report, 1943 85 Appendix 17: USAAF A-2 Periodic Report 91 Appendix 18: 42 nd Bombardment Squadron (H): Missions 18 July 1942 – 1 February 1943 97 Appendix 19...

  10. Toward theory of quantum Hall effect in graphene

    E-Print Network [OSTI]

    E. V. Gorbar; V. P. Gusynin; V. A. Miransky

    2008-11-07T23:59:59.000Z

    We analyze a gap equation for the propagator of Dirac quasiparticles and conclude that in graphene in a magnetic field, the order parameters connected with the quantum Hall ferromagnetism dynamics and those connected with the magnetic catalysis dynamics necessarily coexist (the latter have the form of Dirac masses and correspond to excitonic condensates). This feature of graphene could lead to important consequences, in particular, for the existence of gapless edge states. Solutions of the gap equation corresponding to recently experimentally discovered novel plateaus in graphene in strong magnetic fields are described.

  11. Closed-loop control of ionization oscillations in Hall accelerators

    SciTech Connect (OSTI)

    Barral, S.; Kaczmarczyk, J.; Kurzyna, J. [Institute of Plasma Physics and Laser Microfusion, 01497 Warsaw (Poland); Dudeck, M. [Universite Pierre et Marie Curie, Institut Jean Le Rond d'Alembert, 75252 Paris (France)

    2011-08-15T23:59:59.000Z

    Feedback control of ionization oscillations in Hall accelerators is investigated with a proportional-integral-derivative controller acting on the discharge voltage. The stability of the current is found to systematically improve with proportional control, whereas integral and derivative control have in most cases a detrimental or insignificant impact. At low discharge voltages, proportional control eliminates at the same time ionization breathing oscillations as well as a coexisting low frequency mode. A progressive deterioration of the stability is observed at higher voltage, presumably attributable to the limited output voltage range of the controller. The time-averaged characteristics of the discharge such as average current, thrust and efficiency, remain unchanged within measurement uncertainties.

  12. Quantum spin Hall effect in nanostructures based on cadmium fluoride

    SciTech Connect (OSTI)

    Bagraev, N. T., E-mail: Bagraev@mail.ioffe.ru [Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation); Guimbitskaya, O. N. [St. Petersburg State Polytechnical University (Russian Federation); Klyachkin, L. E.; Koudryavtsev, A. A.; Malyarenko, A. M. [Russian Academy of Sciences, Ioffe Physical Technical Institute (Russian Federation); Romanov, V. V. [St. Petersburg State Polytechnical University (Russian Federation); Ryskin, A. I.; Shcheulin, A. S. [St. Petersburg State University of Information Technologies, Mechanics, and Optics (Russian Federation)

    2010-10-15T23:59:59.000Z

    Tunneling current-voltage (I-V) characteristics and temperature dependences of static magnetic susceptibility and specific heat of the CdB{sub x}F{sub 2-x}/p-CdF{sub 2}-QW/CdB{sub x}F{sub 2-x} planar sandwich structures formed on the surface of an n-CdF{sub 2} crystal have been studied in order to identify superconducting properties of the CdB{sub x}F{sub 2-x} {delta} barriers confining the p-type CdF{sub 2} ultranarrow quantum well. Comparative analysis of current-voltage (I-V) characteristics and conductance-voltage dependences (measured at the temperatures, respectively, below and above the critical temperature of superconducting transition) indicates that there is an interrelation between quantization of supercurrent and dimensional quantization of holes in the p-CdF{sub 2} ultranarrow quantum well. It is noteworthy that detection of the Josephson peak of current in each hole subband is accompanied by the appearance of the spectrum of the multiple Andreev reflection (MAR). A high degree of spin polarization of holes in the edge channels along the perimeter of the p-CdF{sub 2} ultranarrow quantum well appears as a result of MAR and makes it possible to identify the quantum spin Hall effect I-V characteristics; this effect becomes pronounced in the case of detection of nonzero conductance at the zero voltage applied to the vertical gate in the Hall geometry of the experiment. Within the energy range of superconducting gap, the I-V characteristics of the spin transistor and quantum spin Hall effect are controlled by the MAR spectrum appearing as the voltage applied to the vertical gate is varied. Beyond the range of the superconducting gap, the observed I-V characteristic of the quantum spin Hall effect is represented by a quantum conductance staircase with a height of the steps equal to e{sub 2}/h; this height is interrelated with the Aharonov-Casher oscillations of longitudinal and depends on the voltage applied to the vertical gate.

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

    DOE Patents [OSTI]

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

    1990-05-29T23:59:59.000Z

    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.

  14. Controllable spin entanglement production in a quantum spin Hall ring

    E-Print Network [OSTI]

    Anders Ström; Henrik Johannesson; Patrik Recher

    2015-03-13T23:59:59.000Z

    We study the entanglement production in a quantum spin Hall ring geometry where electrons of opposite spins are emitted in pairs from a source and collected in two different detectors. Postselection of coincidence detector events gives rise to entanglement in the system, measurable through correlations between the outcomes in the detectors. We have chosen a geometry such that the entanglement depends on the dynamical phases picked up by the edge states as they move around the ring. In turn, the dependence of the phases on gate potential and Rashba interaction allows for a precise electrical control of the entanglement production in the ring.

  15. Numerical investigation of closed-loop control for Hall accelerators

    SciTech Connect (OSTI)

    Barral, S.; Miedzik, J. [Institute of Plasma Physics and Laser Microfusion, 01497 Warsaw (Poland)

    2011-01-01T23:59:59.000Z

    Low frequency discharge current oscillations in Hall accelerators are conventionally damped with external inductor-capacitor (LC) or resistor-inductor-capacitor (RLC) networks. The role of such network in the stabilization of the plasma discharge is investigated with a numerical model and the potential advantages of proportional-integral-derivative (PID) closed-loop control over RLC networks are subsequently assessed using either discharge voltage or magnetic field modulation. Simulations confirm the reduction of current oscillations in the presence of a RLC network, but suggest that PID control could ensure nearly oscillation-free operation with little sensitivity toward the PID settings.

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

    DOE Patents [OSTI]

    Besmann, Theodore M. (Knoxville, TN); Lowden, Richard A. (Knoxville, TN)

    1990-01-01T23:59:59.000Z

    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.

  17. Earl Oxford Hall: A Brief Biography and Wartime History 

    E-Print Network [OSTI]

    Hall, Hal W.

    2008-07-17T23:59:59.000Z

    Appendix 24: Japanese Aircraft in the South Pacific 151 Appendix 25: Japanese Ships in the South Pacific1 155 5 Preface This booklet started as a way to discover and document the life and last few years of the life of Earl Oxford Hall... Another view of the well-stuck airplane, Earl’s AT-6A Texan trainer. Flight training was in the AT-6A and BT-13 trainers. He noted: “the AT-6A is a sweet ship. It handles more smoothly that the BT-13, but doesn’t seem to have quite as much “feel...

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

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model, click here.Telluric Survey asWest, NewCenterville,LincolnshireCentralHall,

  19. Rebuilding It Better: Greensburg, Kansas, City Hall | Open Energy

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit with form History Facebook iconQuito,JumpReaction SystemsInformation Hall

  20. Town Hall Meeting #3: Green Button | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnualProperty Edit withTianlin Baxin Hydropower Station JumpOpenEI Community Cost PerTown Hall

  1. Parallelising the dual revised simplex method Julian Hall1 Qi Huangfu2 Miles Lubin3

    E-Print Network [OSTI]

    Hall, Julian

    Parallelising the dual revised simplex method Julian Hall1 Qi Huangfu2 Miles Lubin3 1School Parallelising the dual revised simplex method: Overview Background Three approaches Multiple iteration Conclusions Julian Hall Parallelising the dual revised simplex method 2 / 42 Linear programming (LP) minimize

  2. Student Financial Aid 11 Jesse Hall University of Missouri Columbia Columbia, MO 65211-1600

    E-Print Network [OSTI]

    Taylor, Jerry

    Student Financial Aid 11 Jesse Hall University of Missouri ­ Columbia Columbia, MO 65211-1600 PHONE;Student Financial Aid 11 Jesse Hall University of Missouri ­ Columbia Columbia, MO 65211-1600 PHONE (573 ________________________________________________________________________________________________________________________ Name of Host Institution (College or University you will be attending or taking additional classes

  3. Simultaneous Four-Hall Operation for 12 GeV CEBAF

    SciTech Connect (OSTI)

    Kazimi, Reza

    2013-06-01T23:59:59.000Z

    The CEBAF accelerator at Jefferson lab will have a new experimental hall, Hall D, added to its existing three halls as a part of the ongoing 12 GeV upgrade. Under the present CEBAF design, there is no option for sending beam to all four halls simultaneously. At least one hall has to stay down during the machine operation. A new pattern for interleaving the beam bunches is introduced that allows simultaneous operation of all four halls and provide opportunity for additional future experimental beams. The new configuration presents only a minimal change to the existing CEBAF extraction system. In fact all the lower pass extractions will stay as they are and only the frequency of 5th?pass horizontal RF separator will change. In order to make room for the new Hall D beam among the existing three beams, the beam repetition rate is reduced only for the halls taking beam at the highest pass. This and other details of the new configuration and beam pattern will be presented and discussed. A separate paper in this conference will cover the implementation choices including changes to the beam source and extraction region.*

  4. Renormalization group approach to energy level statistics at the integer quantum Hall transition

    E-Print Network [OSTI]

    Chemnitz, Technische Universität

    Renormalization group approach to energy level statistics at the integer quantum Hall transition) approach to study the energy level statistics at the integer quantum Hall (QH) transition. Within the RG, at the transition, the nearest neighbor energy level spacing distribution (LSD) exhibits well-pronounced level

  5. 2228 Engineering Hall 1415 Engineering Drive Madison, Wisconsin 53706-1607 USA

    E-Print Network [OSTI]

    Sheridan, Jennifer

    2228 Engineering Hall 1415 Engineering Drive Madison, Wisconsin 53706-1607 USA Phone: +1 (608) 262 Department of Civil and Environmental Engineering New Jersey Institute of Technology Friday, 16 March 2012 9:30 AM in Room 2321 Engineering Hall Me, Myself and I ­ a woman in engineering (life overview) with Q

  6. THE NEW VME-BASED SYSTEM FOR MAGNETIC MEASUREMENTS WITH HALL SENSORS

    E-Print Network [OSTI]

    Kozak, Victor R.

    requirements to such systems. Note also, that for controlling the peripheral equipment like power supplies. ELECTRONICS OF HALL-SENSOR MEASURING SYSTEM The Figure 1 demonstrates the structure of measuring system CABLES CANBUS Figure 1: The structure of Hall measuring system. Carriage and its Thermostabilization

  7. Magnetic shielding of walls from the unmagnetized ion beam in a Hall thruster

    SciTech Connect (OSTI)

    Mikellides, Ioannis G.; Katz, Ira; Hofer, Richard R.; Goebel, Dan M. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (United States)] [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (United States)

    2013-01-14T23:59:59.000Z

    We demonstrate by numerical simulations and experiments that the unmagnetized ion beam formed in a Hall thruster can be controlled by an applied magnetic field in a manner that reduces by 2-3 orders of magnitude deleterious ion bombardment of the containing walls. The suppression of wall erosion in Hall thrusters to such low levels has remained elusive for decades.

  8. Blake Hall 2 0 1 0 -2 0 1 3 RENOVATIONS

    E-Print Network [OSTI]

    Goodman, Robert M.

    as the interior renovations were being planned, new windows were installed to address both energy efficiencyBlake Hall 2 0 1 0 - 2 0 1 3 RENOVATIONS #12;A 4-PHASE RENOVATION (+ WINDOWS) Blake Hall has been that building renovations should occur before the next accreditation visit in 2011. In addition, the department

  9. Temperature dependence of conductance fluctuations in quantum Hall multilayers H. A. Walling,1

    E-Print Network [OSTI]

    Xu, Jing

    )]. This surface phase dominates vertical transport at low temperatures that freeze out parallel bulk transport.2 fluctuations in low-temperature, vertical transport through quantum Hall multilayers. The mesas studied dependence of reproduc- ible conductance fluctuations in quantum Hall multilayers. The vertical transport

  10. ENERGY HARVESTING & DATA ANALYSIS OF SMART LIGHTING IN SUTARDJA DAI HALL

    E-Print Network [OSTI]

    Agogino, Alice M.

    1 ENERGY HARVESTING & DATA ANALYSIS OF SMART LIGHTING IN SUTARDJA DAI HALL STEFANO MORET AND FUTURE DEVELOPMENT 9 PART II - ENERGY ANALYSIS 11 2.1 ­ SUTARDJA DAI HALL 4TH FLOOR 11 2.2 ­ ENERGY ANALYSIS RESULTS 12 2.3 ­ CONCLUSIONS

  11. Towards Managing Variability in the Safety Design of an Automotive Hall Effect Sensor

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Towards Managing Variability in the Safety Design of an Automotive Hall Effect Sensor Dimitri Van) as the main devel- opment process for an automotive Hall Effect sensor. This versatile component is integrated for every automotive application in which the sensor is to be used. In addition, no support is given

  12. TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ conference@trinhall.cam.ac.uk 01223 764444

    E-Print Network [OSTI]

    Lasenby, Joan

    TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ conference@trinhall.cam.ac.uk 01223 764444 DINING MENUS with Coriander Cream Smoked Haddock Chowder with Poached Quail Egg #12;TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1 & Caramelized Shallot Wellington, Basil Dressing #12;TRINITY HALL TRINITY LANE CAMBRIDGE CB2 1TJ conference

  13. Gluonic Excitations and Experimental Hall-D at Jefferson Lab

    SciTech Connect (OSTI)

    Stevens, Justin [MIT

    2014-07-01T23:59:59.000Z

    A new tagged photon beam facility is being constructed in experimental Hall-D at Jefferson Lab as a part of the 12 GeV upgrade program. The 9 GeV linearly-polarized photon beam will be produced via coherent Bremsstrahlung using the CEBAF electron beam, incident on a diamond radiator. The GlueX experiment in Hall-D will use this photon beam to search for and study the pattern of gluonic excitations in the meson spectrum produced through photoproduction reactions with a liquid hydrogen target. Recent lattice QCD calculations predict a rich spectrum of hybrid mesons, that are formed by exciting the gluonic field that couples the quarks. A subset of these hybrid mesons are predicted to have exotic quantum numbers which cannot be formed from a simple qq^- pair, and thus provide an ideal laboratory for testing QCD in the confinement regime. In these proceedings the status of the construction and installation of the GlueX detector will be presented, in addition to simulation results for some reactions of interest in hybrid meson searches.

  14. Gluonic Excitations and Experimental Hall-D at Jefferson Lab

    E-Print Network [OSTI]

    Justin R. Stevens

    2014-07-08T23:59:59.000Z

    A new tagged photon beam facility is being constructed in experimental Hall-D at Jefferson Lab as a part of the 12 GeV upgrade program. The 9 GeV linearly-polarized photon beam will be produced via coherent Bremsstrahlung using the CEBAF electron beam, incident on a diamond radiator. The GlueX experiment in Hall-D will use this photon beam to search for and study the pattern of gluonic excitations in the meson spectrum produced through photoproduction reactions with a liquid hydrogen target. Recent lattice QCD calculations predict a rich spectrum of hybrid mesons, that are formed by exciting the gluonic field that couples the quarks. A subset of these hybrid mesons are predicted to have exotic quantum numbers which cannot be formed from a simple $q\\bar{q}$ pair, and thus provide an ideal laboratory for testing QCD in the confinement regime. In these proceedings the status of the construction and installation of the GlueX detector will be presented, in addition to simulation results for some reactions of interest in hybrid meson searches.

  15. Krypton charge exchange cross sections for Hall effect thruster models

    SciTech Connect (OSTI)

    Hause, Michael L. [Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts 02159 (United States); Prince, Benjamin D.; Bemish, Raymond J. [Air Force Research Laboratory, Space Vehicles Directorate, Kirtland AFB, New Mexico 87117 (United States)

    2013-04-28T23:59:59.000Z

    Following discharge from a Hall effect thruster, charge exchange occurs between ions and un-ionized propellant atoms. The low-energy cations produced can disturb operation of onboard instrumentation or the thruster itself. Charge-exchange cross sections for both singly and doubly charged propellant atoms are required to model these interactions. While xenon is the most common propellant currently used in Hall effect thrusters, other propellants are being considered, in particular, krypton. We present here guided-ion beam measurements and comparisons to semiclassical calculations for Kr{sup +} + Kr and Kr{sup 2+} + Kr cross sections. The measurements of symmetric Kr{sup +} + Kr charge exchange are in good agreement with both the calculations including spin-orbit effects and previous measurements. For the symmetric Kr{sup 2+} + Kr reaction, we present cross section measurements for center-of-mass energies between 1 eV and 300 eV, which spans energies not previously examined experimentally. These cross section measurements compare well with a simple one-electron transfer model. Finally, cross sections for the asymmetric Kr{sup 2+} + Kr {yields} Kr{sup +} + Kr{sup +} reaction show an onset near 12 eV, reaching cross sections near constant value of 1.6 A{sup 2} with an exception near 70-80 eV.

  16. Crystalline phases of graphene quantum Hall polariton fluids

    E-Print Network [OSTI]

    Francesco M. D. Pellegrino; Vittorio Giovannetti; Allan H. MacDonald; Marco Polini

    2015-05-26T23:59:59.000Z

    There is growing experimental interest in coupling cavity photons to the cyclotron resonance excitations of electron liquids in high-mobility semiconductor quantum wells or graphene sheets. These media offer unique platforms to carry out fundamental studies of exciton-polariton condensation and cavity quantum electrodynamics in a regime in which electron-electron (e-e) interactions are expected to play a pivotal role. Focusing on graphene, we present a theoretical study of the impact of e-e interactions on a quantum Hall polariton fluid (QHPF), i.e. a fluid of magneto-excitons resonantly coupled to cavity photons. We show that e-e interactions are responsible for an instability of graphene integer QHPFs towards a crystalline phase. We demonstrate that this phase can be detected by measuring the collective excitation spectra, which soften at a characteristic wave vector of the order of the inverse magnetic length.

  17. Quantum spin Hall effect and topological insulators for light

    E-Print Network [OSTI]

    Bliokh, Konstantin Y

    2015-01-01T23:59:59.000Z

    We show that free-space light has intrinsic quantum spin-Hall effect (QSHE) properties. These are characterized by a non-zero topological spin Chern number, and manifest themselves as evanescent modes of Maxwell equations. The recently discovered transverse spin of evanescent modes demonstrates spin-momentum locking stemming from the intrinsic spin-orbit coupling in Maxwell equations. As a result, any interface between free space and a medium supporting surface modes exhibits QSHE of light with opposite transverse spins propagating in opposite directions. In particular, we find that usual isotropic metals with surface plasmon-polariton modes represent natural 3D topological insulators for light. Several recent experiments have demonstrated transverse spin-momentum locking and spin-controlled unidirectional propagation of light at various interfaces with evanescent waves. Our results show that all these experiments can be interpreted as observations of the QSHE of light.

  18. The Hall D solenoid helium refrigeration system at JLab

    SciTech Connect (OSTI)

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

    2014-01-01T23:59:59.000Z

    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.

  19. Hall viscosity to entropy ratio in higher derivative theories

    E-Print Network [OSTI]

    Dibakar Roychowdhury

    2014-09-18T23:59:59.000Z

    In this paper based on the basic principles of gauge/gravity duality we compute the hall viscosity to entropy ratio in the presence of various higher derivative corrections to the dual gravitational description embedded in an asymptotically $ AdS_{4} $ space time. As the first step of our analysis, considering the back reaction we impose higher derivative corrections to the abelian gauge sector of the theory where we notice that the ratio indeed gets corrected at the leading order in the coupling. Considering the probe limit as a special case we compute this leading order correction over the fixed background of the charged black brane solution. Finally we consider higher derivative ($ R^{2} $) correction to the gravity sector of the theory where we notice that the above ratio might get corrected at the sixth derivative level.

  20. Hall MHD Stability and Turbulence in Magnetically Accelerated Plasmas

    SciTech Connect (OSTI)

    H. R. Strauss

    2012-11-27T23:59:59.000Z

    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.

  1. Intrinsic Spin Hall Effect Induced by Quantum Phase Transition in HgCdTe Quantum Wells

    SciTech Connect (OSTI)

    Yang, Wen; Chang, Kai; /Beijing, Inst. Semiconductors; Zhang, Shou-Cheng; /Stanford U., Phys. Dept.

    2010-03-19T23:59:59.000Z

    Spin Hall effect can be induced both by the extrinsic impurity scattering and by the intrinsic spin-orbit coupling in the electronic structure. The HgTe/CdTe quantum well has a quantum phase transition where the electronic structure changes from normal to inverted. We show that the intrinsic spin Hall effect of the conduction band vanishes on the normal side, while it is finite on the inverted side. This difference gives a direct mechanism to experimentally distinguish the intrinsic spin Hall effect from the extrinsic one.

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

    SciTech Connect (OSTI)

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

    2010-03-19T23:59:59.000Z

    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.

  3. Hall B superconducting magnets for the CLAS12 detector at JLAB

    SciTech Connect (OSTI)

    L. Quettier, V. Burkert, L. Elouadrhiri, D. Kashy, E. Leung, W. Schneider

    2011-02-01T23:59:59.000Z

    Hadron physics has been an essential part of the physics program with the CLAS detector in experimental hall B at Thomas Jefferson National Accelerator Facility (Jefferson Lab). With the 12 GeV upgrade of the CEBAF machine, hadron physics in Hall B will be extended to a new domain of higher mass resonances and the range of higher transferred momentum using up to 11 GeV electron beams and the upgraded CLAS12 detector. In this paper, status of the hall B superconducting magnets for the 12 GeV upgrade is presented.

  4. Status of Hall B superconducting magnets for the CLAS12 detector at JLab

    SciTech Connect (OSTI)

    Quettier, L; Kashy, D; Elouadrhiri, L; Salpietro, E; Schneider, W; Small, R; Leung, E; Juang, T; McMullin, J; Taylor, C; Xu, L; Wagner, B; Wang, B; Wang, M

    2011-12-01T23:59:59.000Z

    Hadron physics has been an essential part of the physics program with the CLAS detector in experimental hall B at Thomas Jefferson National Accelerator Facility (Jefferson Lab). With the 12 GeV upgrade of the CEBAF machine, hadron physics in Hall B will be extended to a new domain of higher mass resonances and the range of higher transferred momentum using up to 11 GeV electron beams and the upgraded CLAS12 detector. In this paper, status of the hall B superconducting magnets for the CLAS12 detector is presented.

  5. University Engagement and Outreach Committee Chair: PVC (IA), Prof. M Cardew-Hall

    E-Print Network [OSTI]

    Botea, Adi

    University Engagement and Outreach Committee Chair: PVC (IA), Prof. M Cardew-Hall Alternate Chair: PVC (IO), Dr. Erik Lithander Secretary: Ms. Jan O'Connor (Jan.OConnor@anu.edu.au) / Ms. Joanne Gash

  6. Daniel A. Goldstein 501 Campbell Hall #3411 1 Cyclotron Road MS 50B-4206

    E-Print Network [OSTI]

    Backer, Don

    Daniel A. Goldstein 501 Campbell Hall #3411 1 Cyclotron Road MS 50B-4206 Department of Astronomy., Brown, P.J., Finley, D. A., Fischer, J., Goldstein, D., et al. DES13S2cmm: The First Superluminous

  7. Control of the electric-field profile in the Hall thruster A. Fruchtman

    E-Print Network [OSTI]

    Control of the electric-field profile in the Hall thruster A. Fruchtman Holon Academic Institute of Technology, 52 Golomb Street, P.O. Box 305, Holon 58102, Israel N. J. Fisch and Y. Raitses Princeton Plasma

  8. Parallelization of particle-in-cell simulation modeling Hall-effect thrusters

    E-Print Network [OSTI]

    Fox, Justin M., 1981-

    2005-01-01T23:59:59.000Z

    MIT's fully kinetic particle-in-cell Hall thruster simulation is adapted for use on parallel clusters of computers. Significant computational savings are thus realized with a predicted linear speed up efficiency for certain ...

  9. Hall photovoltage deep-level spectroscopy of GaN films I. Shalish*

    E-Print Network [OSTI]

    Shalish, Ilan

    in semiconductor Hall voltage is proposed as a method to charac- terize deep levels. An analytical expression nucleation layer at temperatures lower than the typical growth temperature providing a bridge over

  10. The $?$-deformed Segal-Bargmann transform is a Hall type transform

    E-Print Network [OSTI]

    Stephen Bruce Sontz

    2009-07-13T23:59:59.000Z

    We present an explanation of how the $\\mu$-deformed Segal-Bargmann spaces, that are studied in various articles of the author in collaboration with Angulo, Echevarria and Pita, can be viewed as deserving their name, that is, how they should be considered as a part of Segal-Bargmann analysis. This explanation relates the $\\mu$-deformed Segal-Bargmann transforms to the generalized Segal-Bargmann transforms introduced by B. Hall using heat kernel analysis. All the versions of the $\\mu$-deformed Segal-Bargmann transform can be understood as Hall type transforms. In particular, we define a $\\mu$-deformation of Hall's "Version C" generalized Segal-Bargmann transform which is then shown to be a $\\mu$-deformed convolution with a $\\mu$-deformed heat kernel followed by analytic continuation. Our results are generalizations and analogues of the results of Hall.

  11. Nonparametric Bootstrap Recycling Val'erie Ventura, Department of Statistics, Baker Hall 132

    E-Print Network [OSTI]

    Nonparametric Bootstrap Recycling Val'erie Ventura, Department of Statistics, Baker Hall 132 adjustments. The amount of computation involved is usually considerable, and recycling provides a less computer intensive alternative. Recycling consists of using repeatedly the same samples drawn from

  12. Emergency phones, exterior residence hall phones, and pay phones Pay-by-Space Parking

    E-Print Network [OSTI]

    Emergency phones, exterior residence hall phones, and pay phones Pay-by-Space Parking Meter Parking Pay-by- Space Parking VehicleThoroughfares N Pitkin Street Lake Street College Avenue Underpass Annual

  13. Multi-DOF precision positioning methodology using two-axis Hall-effect sensors

    E-Print Network [OSTI]

    Kawato, Yusuke

    2006-08-16T23:59:59.000Z

    A novel sensing methodology using two-axis Hall-effect sensors is proposed, where the absolute positioning of a device atop any magnet matrix is possible. This methodology has the capability of micrometer-order positioning resolution as well...

  14. Electrically tunable quantum spin Hall state in topological crystalline insulator thin films

    E-Print Network [OSTI]

    Liu, Junwei

    Based on electronic structure calculations and theoretical analysis, we predict the (111) thin films of the SnTe class of three-dimensional (3D) topological crystalline insulators (TCIs) realize the quantum spin Hall phase ...

  15. Higgs Mechanism and Anomalous Hall Effect in Three-Dimensional Topological Superconductors

    E-Print Network [OSTI]

    Nogueira, Flavio S; Eremin, Ilya

    2015-01-01T23:59:59.000Z

    We demonstrate that the Higgs mechanism in three-dimensional topological superconductors exhibits unique features with experimentally observable consequences. The Higgs model we discuss has two superconducting components and an axion-like magnetoelectric term with the phase difference of the superconducting order parameters playing the role of the axion field. Due to this additional term, quantum electromagnetic and phase fluctuations lead to a robust topologically non-trivial state that cannot be continuously deformed into a topologically non-trivial one. In the low frequency London regime an anomalous Hall effect is induced in the presence of an applied electric field parallel to the surface. This anomalous Hall current is induced by a Lorentz-like force arising from the axion term, and it involves the relative superfluid velocity of the superconducting components. The anomalous Hall current has a negative sign, a situation reminiscent, but quite distinct in physical origin, of the anomalous Hall effect obs...

  16. Quantum Hall effect and Landau-level crossing of Dirac fermions in trilayer graphene

    E-Print Network [OSTI]

    Taychatanapat, Thiti

    The physics of Dirac fermions in condensed-matter systems has received extraordinary attention following the discoveries of two new types of quantum Hall effect in single-layer and bilayer graphene1, 2, 3. The electronic ...

  17. Effective field theory and projective construction for Z[subscript k] parafermion fractional quantum Hall states

    E-Print Network [OSTI]

    Wen, Xiao-Gang

    The projective construction is a powerful approach to deriving the bulk and edge field theories of non-Abelian fractional quantum Hall (FQH) states and yields an understanding of non-Abelian FQH states in terms of the ...

  18. Hall mobility of cuprous oxide thin films deposited by reactive direct-current magnetron sputtering

    E-Print Network [OSTI]

    Lee, Yun Seog

    Cuprous oxide (Cu[subscript 2]O) is a promising earth-abundant semiconductor for photovoltaic applications. We report Hall mobilities of polycrystalline Cu[subscript 2]O thin films deposited by reactive dc magnetron ...

  19. Seo 226 CSE/DISCENTES (ALUNOS) (CSE) : Hall do Bloco B -CSE

    E-Print Network [OSTI]

    Floeter, Sergio Ricardo

    Seção 226 ­ CSE/DISCENTES (ALUNOS) (CSE) : Hall do Bloco B - CSE SE��O NOME LOCAL / CATEGORIA 226-alunos 226 LENIO GNECCO J�NIOR CSE-alunos #12;Seção 226 ­ CSE/DISCENTES (ALUNOS) (CSE) : Hall do Bloco B SANTOS FUSINATO CSE-alunos 226 LEONARDO SAQUETE GON�ALVES CSE-alunos 226 LEONARDO SCHMIDT DURAND

  20. College Lodge Residence Hall (200 Students, Co-ed by Room / Tier 1 Double Occupancy Fee)

    E-Print Network [OSTI]

    Kunkle, Tom

    storage. Kneespace is wide open to allow for vertical computer towers. There is no shelving above the desk, but you are allowed to provide your own lightweight shelving (think plastic & stackable) as long

  1. Topological superconductivity, topological confinement, and the vortex quantum Hall effect

    SciTech Connect (OSTI)

    Diamantini, M. Cristina; Trugenberger, Carlo A. [INFN and Dipartimento di Fisica, University of Perugia, via A. Pascoli, I-06100 Perugia (Italy); SwissScientific, chemin Diodati 10, CH-1223 Cologny (Switzerland)

    2011-09-01T23:59:59.000Z

    Topological matter is characterized by the presence of a topological BF term in its long-distance effective action. Topological defects due to the compactness of the U(1) gauge fields induce quantum phase transitions between topological insulators, topological superconductors, and topological confinement. In conventional superconductivity, because of spontaneous symmetry breaking, the photon acquires a mass due to the Anderson-Higgs mechanism. In this paper we derive the corresponding effective actions for the electromagnetic field in topological superconductors and topological confinement phases. In topological superconductors magnetic flux is confined and the photon acquires a topological mass through the BF mechanism: no symmetry breaking is involved, the ground state has topological order, and the transition is induced by quantum fluctuations. In topological confinement, instead, electric charge is linearly confined and the photon becomes a massive antisymmetric tensor via the Stueckelberg mechanism. Oblique confinement phases arise when the string condensate carries both magnetic and electric flux (dyonic strings). Such phases are characterized by a vortex quantum Hall effect potentially relevant for the dissipationless transport of information stored on vortices.

  2. Topological solitons in the noncommutative plane and quantum Hall Skyrmions

    SciTech Connect (OSTI)

    Ezawa, Z.F. [Department of Physics, Tohoku University, Sendai, 980-8578 (Japan); Tsitsishvili, G. [Department of Physics, Tohoku University, Sendai, 980-8578 (Japan); Department of Theoretical Physics, A. Razmadze Mathematical Institute, Tbilisi, 380093 (Georgia)

    2005-10-15T23:59:59.000Z

    We analyze topological solitons in the noncommutative plane by taking a concrete instance of the quantum Hall system with the SU(N) symmetry, where a soliton is identified with a Skyrmion. It is shown that a topological soliton induces an excitation of the electron number density from the ground-state value around it. When a judicious choice of the topological charge density J{sub 0}(x) is made, it acquires a physical reality as the electron density excitation {delta}{rho}{sup cl}(x) around a topological soliton, {delta}{rho}{sup cl}(x)=-J{sub 0}(x). Hence a noncommutative soliton carries necessarily the electric charge proportional to its topological charge. A field-theoretical state is constructed for a soliton state irrespectively of the Hamiltonian. In general, it involves an infinitely many parameters. They are fixed by minimizing its energy once the Hamiltonian is chosen. We study explicitly the cases where the system is governed by the hard-core interaction and by the noncommutative CP{sup N-1} model, where all these parameters are determined analytically and the soliton excitation energy is obtained.

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

    SciTech Connect (OSTI)

    Osborne, Hunter [Shoshone Bannock Tribes

    2009-07-23T23:59:59.000Z

    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.

  4. The Quantum Spin Hall Effect: Theory and Experiment

    SciTech Connect (OSTI)

    Konig, Markus; Buhmann, Hartmut; Molenkamp, Laurens W.; /Wurzburg U.; Hughes, Taylor L.; /Stanford U., Phys. Dept.; Liu, Chao-Xing; /Tsinghua U., Beijing /Stanford U., Phys. Dept.; Qi, Xiao-Liang; Zhang, Shou-Cheng; /Stanford U., Phys. Dept.

    2010-03-19T23:59:59.000Z

    The search for topologically non-trivial states of matter has become an important goal for condensed matter physics. Recently, a new class of topological insulators has been proposed. These topological insulators have an insulating gap in the bulk, but have topologically protected edge states due to the time reversal symmetry. In two dimensions the helical edge states give rise to the quantum spin Hall (QSH) effect, in the absence of any external magnetic field. Here we review a recent theory which predicts that the QSH state can be realized in HgTe/CdTe semiconductor quantum wells. By varying the thickness of the quantum well, the band structure changes from a normal to an 'inverted' type at a critical thickness d{sub c}. We present an analytical solution of the helical edge states and explicitly demonstrate their topological stability. We also review the recent experimental observation of the QSH state in HgTe/(Hg,Cd)Te quantum wells. We review both the fabrication of the sample and the experimental setup. For thin quantum wells with well width d{sub QW} < 6.3 nm, the insulating regime shows the conventional behavior of vanishingly small conductance at low temperature. However, for thicker quantum wells (d{sub QW} > 6.3 nm), the nominally insulating regime shows a plateau of residual conductance close to 2e{sup 2}/h. The residual conductance is independent of the sample width, indicating that it is caused by edge states. Furthermore, the residual conductance is destroyed by a small external magnetic field. The quantum phase transition at the critical thickness, d{sub c} = 6.3 nm, is also independently determined from the occurrence of a magnetic field induced insulator to metal transition.

  5. Magnetic shielding of Hall thrusters at high discharge voltages

    SciTech Connect (OSTI)

    Mikellides, Ioannis G., E-mail: Ioannis.G.Mikellides@jpl.nasa.gov; Hofer, Richard R.; Katz, Ira; Goebel, Dan M. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (United States)

    2014-08-07T23:59:59.000Z

    A series of numerical simulations and experiments have been performed to assess the effectiveness of magnetic shielding in a Hall thruster operating in the discharge voltage range of 300–700?V (I{sub sp}???2000–2700?s) at 6?kW, and 800?V (I{sub sp} ? 3000) at 9?kW. At 6?kW, the magnetic field topology with which highly effective magnetic shielding was previously demonstrated at 300?V has been retained for all other discharge voltages; only the magnitude of the field has been changed to achieve optimum thruster performance. It is found that magnetic shielding remains highly effective for all discharge voltages studied. This is because the channel is long enough to allow hot electrons near the channel exit to cool significantly upon reaching the anode. Thus, despite the rise of the maximum electron temperature in the channel with discharge voltage, the electrons along the grazing lines of force remain cold enough to eliminate or reduce significantly parallel gradients of the plasma potential near the walls. Computed maximum erosion rates in the range of 300–700?V are found not to exceed 10{sup ?2}?mm/kh. Such rates are ?3 orders of magnitude less than those observed in the unshielded version of the same thruster at 300?V. At 9?kW and 800?V, saturation of the magnetic circuit did not allow for precisely the same magnetic shielding topology as that employed during the 6-kW operation since this thruster was not designed to operate at this condition. Consequently, the maximum erosion rate at the inner wall is found to be ?1 order of magnitude higher (?10{sup ?1}?mm/kh) than that at 6?kW. At the outer wall, the ion energy is found to be below the sputtering yield threshold so no measurable erosion is expected.

  6. 2D massless QED Hall half-integer conductivity and graphene

    E-Print Network [OSTI]

    A. Pérez Martínez; E. Rodriguez Querts; H. Pérez Rojas; R. Gaitan; S. Rodriguez Romo

    2011-10-13T23:59:59.000Z

    Starting from the photon self-energy tensor in a magnetized medium, the 3D complete antisymmetric form of the conductivity tensor is found in the static limit of a fermion system $C$ non-invariant under fermion-antifermion exchange. The massless relativistic 2D fermion limit in QED is derived by using the compactification along the dimension parallel to the magnetic field. In the static limit and at zero temperature the main features of quantum Hall effect (QHE) are obtained: the half-integer QHE and the minimum value proportional to $e^2/h$ for the Hall conductivity . For typical values of graphene the plateaus of the Hall conductivity are also reproduced.

  7. Experimental Observation of the Inverse Spin Hall Effect at Room Temperature

    SciTech Connect (OSTI)

    Liu, Baoli; Shi, Junren; Wang, Wenxin; Zhao, Hongming; Li, Dafang; /Beijing, Inst. Phys.; Zhang, Shoucheng; /Stanford U., Phys. Dept.; Xue, Qikun; Chen, Dongmin; /Beijing, Inst. Phys.

    2010-03-16T23:59:59.000Z

    We observe the inverse spin Hall effect in a two-dimensional electron gas confined in Al-GaAs/InGaAs quantum wells. Specifically, they find that an inhomogeneous spin density induced by the optical injection gives rise to an electric current transverse to both the spin polarization and its gradient. The spin Hall conductivity can be inferred from such a measurement through the Einstein relation and the onsager relation, and is found to have the order of magnitude of 0.5(e{sup 2}/h). The observation is made at the room temperature and in samples with macroscopic sizes, suggesting that the inverse spin Hall effects is a robust macroscopic transport phenomenon.

  8. Hall-Coefficient for Oriented Tl2ba2cacu2o8+delta Thin-Films

    E-Print Network [OSTI]

    WANG, PS; WILLIAMS, JC; RATHNAYAKA, KDD; HENNINGS, BD; Naugle, Donald G.; KAISER, AB.

    1993-01-01T23:59:59.000Z

    Measurements of the Hall coefficient and resistivity for highly oriented Tl2Ba2CaCu2O8+delta thin films are reported. The temperature dependence of cotTHETA(H), where THETA(H) is the normal-state Hall angle, for a single-phase (2:2:1:2) film sample...

  9. High-frequency probing diagnostic for Hall current plasma thrusters A. A. Litvak, Y. Raitses, and N. J. Fisch

    E-Print Network [OSTI]

    is restricted by sputtering of the probe material, which can produce a short circuit between the probe tipsHigh-frequency probing diagnostic for Hall current plasma thrusters A. A. Litvak, Y. Raitses, and N-matching circuit, was successfully built and calibrated. Through simultaneous high-frequency probing of the Hall

  10. Holographic Spontaneous Parity Breaking and Emergent Hall Viscosity and Angular Momentum

    E-Print Network [OSTI]

    Dam Thanh Son; Chaolun Wu

    2014-08-30T23:59:59.000Z

    We study the spontaneous parity breaking and generating of Hall viscosity and angular momentum in holographic p+ip model, which can describe strongly-coupled chiral superfluid states in many quantum systems. The dual gravity theory, an SU(2) gauge field minimally coupled to Einstein gravity, is parity-invariant but allows a black hole solution with vector hair corresponding to a parity-broken superfluid state. We show that this state possesses a non-vanishing parity-odd transport coefficient -- Hall viscosity -- and an angular momentum density. We first develop an analytic method to solve this model near the critical regime and to take back-reactions into account. Then we solve the equation for the tensor mode fluctuations and obtain the expression for Hall viscosity via Kubo formula. We also show that a non-vanishing angular momentum density can be obtained through the vector mode fluctuations and the corresponding boundary action. We give analytic results of both Hall viscosity and angular momentum density near the critical regime in terms of physical parameters. The near-critical behavior of Hall viscosity is different from that obtained from a gravitational Chern-Simons model. We find that the magnitude of Hall viscosity to angular momentum density ratio is numerically consistent with being equal to 1/2 at large SU(2) coupling corresponding to the probe limit, in agreement with previous results obtained for various quantum fluid systems and from effective theory approaches. In addition, we find the shear viscosity to entropy density ratio remains above the universal bound.

  11. Inert Anode/Cathode Program: Fiscal Year 1986 annual report. [For Hall-Heroult cells

    SciTech Connect (OSTI)

    Brenden, B.B.; Davis, N.C.; Koski, O.H.; Marschman, S.C.; Pool, K.H.; Schilling, C.H.; Windisch, C.F.; Wrona, B.J.

    1987-06-01T23:59:59.000Z

    Purpose of the program is to develop long-lasting, energy-efficient anodes, cathodes, and ancillary equipment for Hall-Heroult cells used by the aluminum industry. The program is divided into four tasks: Inert Anode Development, Cathode Materials Evaluation, Cathode Bonding Development, and Sensor Development. To devise sensors to control the chemistry of Hall-Heroult cells using stable anodes and cathodes. This report highlights the major FY86 technical accomplishments, which are presented in the following sections: Management, Materials Development, Materials Evaluation, Thermodynamic Evaluation, Laboratory Cell Tests, Large-Scale Tests, Cathode Materials Evaluation, Cathode Bonding Development, and Sensor Development.

  12. Correlation between the extraordinary Hall constant and electrical resistivity minima in Co-rich metallic glasses

    E-Print Network [OSTI]

    Majumdar, AK; Khatua, PK; Rathnayaka, KDD; Naugle, Donald G.

    2004-01-01T23:59:59.000Z

    . INTRODUCTION The Hall resistivity srHd in a crystalline ferromagnet is, for T!Tc, given by1 rH = R0B + m0RsMs, s1d where B is the magnetic induction and m0 is the permeability of free space. The Lorentz force acting on the charge carriers is responsible... as the ?extraordinary? or the ?spontaneous? Hall constant. In Eq. (1) R0 and Rs have the same units of Vm/T in SI. Two different mechanisms are responsible for Rs. A. Nonclassical transport It has been shown1 that whenever the dimensionless pa- rameter " /t...

  13. Radial scale effect on the performance of low-power cylindrical Hall plasma thrusters

    SciTech Connect (OSTI)

    Seo, Mihui; Lee, Jongsub; Choe, Wonho [Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)] [Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701 (Korea, Republic of); Seon, Jongho [School of Space Research, Kyung Hee University, 1732 Deokyoungdaero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701 (Korea, Republic of)] [School of Space Research, Kyung Hee University, 1732 Deokyoungdaero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701 (Korea, Republic of); June Lee, Hae [Department of Electrical Engineering, Pusan National University, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 609-735 (Korea, Republic of)] [Department of Electrical Engineering, Pusan National University, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 609-735 (Korea, Republic of)

    2013-09-23T23:59:59.000Z

    Investigation of the radial scale effect on low-power cylindrical Hall thrusters has been undertaken by comparing the thrusters with three different channel diameters of 28, 40, and 50 mm. The investigation found that both the anode efficiency and the thrust of the larger thruster are higher as the anode power is raised. On the other hand, higher current and propellant utilizations are achieved for the smaller thruster, which is due to higher neutral density and better electron confinement. The large plume angle of the small cylindrical Hall thruster causes thrust loss, resulting in the reduction of anode efficiency.

  14. Temperature dependent spin transport properties of platinum inferred from spin Hall magnetoresistance measurements

    SciTech Connect (OSTI)

    Meyer, Sibylle, E-mail: sibylle.meyer@wmi.badw-muenchen.de; Althammer, Matthias; Geprägs, Stephan; Opel, Matthias; Goennenwein, Sebastian T. B. [Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching (Germany); Gross, Rudolf [Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, 85748 Garching (Germany); Physik-Department, Technische Universität München, 85748 Garching (Germany)

    2014-06-16T23:59:59.000Z

    We study the temperature dependence of the spin Hall magnetoresistance (SMR) in yttrium iron garnet/platinum hybrid structures via magnetization orientation dependent magnetoresistance measurements. Our experiments show a decrease of the SMR magnitude with decreasing temperature. Using the sensitivity of the SMR to the spin transport properties of the normal metal, we interpret our data in terms of a decrease of the spin Hall angle in platinum from 0.11 at room temperature to 0.075 at 10?K, while the spin diffusion length and the spin mixing conductance of the ferrimagnetic insulator/normal metal interface remain almost constant.

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

    SciTech Connect (OSTI)

    Laczkowski, P.; Rojas-Sánchez, J.-C. [Unité Mixte de Physique CNRS/Thales and Université Paris-Sud 11, 91767 Palaiseau (France); INAC/SP2M, CEA-Université Joseph Fourier, F-38054 Grenoble (France); Savero-Torres, W.; Notin, L.; Beigné, C.; Marty, A.; Attané, J.-P.; Vila, L. [INAC/SP2M, CEA-Université Joseph Fourier, F-38054 Grenoble (France); Jaffrès, H.; Reyren, N.; Deranlot, C.; George, J.-M.; Fert, A. [Unité Mixte de Physique CNRS/Thales and Université Paris-Sud 11, 91767 Palaiseau (France)

    2014-04-07T23:59:59.000Z

    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.

  16. Effects of ionization distribution on plasma beam focusing characteristics in Hall thrusters

    SciTech Connect (OSTI)

    Ning Zhongxi; Liu Hui; Yu Daren [Plasma Propulsion Laboratory, Harbin Institute of Technology, Harbin 150001 (China); Zhou Zhongxiang [Department of Physics, Harbin Institute of Technology, Harbin 150001 (China)

    2011-11-28T23:59:59.000Z

    The relationship between ionization distribution and divergence of plasma beam in a Hall thruster is investigated using spectrum and probe methods. Experimental results indicate that the shift of ionization region towards the exit of channel causes the reduction of accelerating field and the enhancement of electron thermal pressure effect, which result in further deviation of equipotential lines to magnetic field lines and further increase in divergence of plasma beam. It is, therefore, suggested that to put the ionization region deep inside the channel and separate it from the acceleration region at the design, and development stage is helpful to improve the plasma beam focusing characteristics of a Hall thruster.

  17. arXiv:0910.4460v2[math.QA]1Dec2009 LECTURES ON CANONICAL AND CRYSTAL BASES OF HALL

    E-Print Network [OSTI]

    Proudfoot, Nicholas

    ] into a geometric one. This geometric lift amounts to replacing the "naive" space of functions on the set MA" Hall algebra (or rather, Hall category) QA and the "algebraic" Hall algebra HA. Such a geometric lift. The relevant language for a general theory is likely to be [TV1]. Rather than embarking on the (probably risky

  18. JOURNAL DE PHYSIQUE Colloque C5, suppliment au no 5, Tome 40, Mai 1979,page C5-46 High-temperature Hall effect in rare earth metals

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    -temperature Hall effect in rare earth metals M. V. Vedernikov, V. G. Dvunitkin and N. I. Moreva A. F. Ioffe. Abstract. - Up to date the Hall effect in rare earth metals (REM) was studied rather extensively below at http://dx.doi.org/10.1051/jphyscol:1979518 #12;HIGH-TEMPERATURE HALL EFFECT IN RARE EARTH METALS C5

  19. Development Office, Trinity Hall, Cambridge, CB2 1TJ www.trinhall.cam.ac.uk fundraising@trinhall.cam.ac.uk

    E-Print Network [OSTI]

    Lasenby, Joan

    Development Office, Trinity Hall, Cambridge, CB2 1TJ www.trinhall.cam.ac.uk fundraising@trinhall.cam.ac.uk Tel: 01223 766345 Fax: 01223 765157 Trinity Hall Cambridge registered charity number 1137458 Making of financial background, and we are committed to nurturing the talent of the diverse Trinity Hall community

  20. UCLA-DOE Biochemistry Instrumentation Facility: The following equipment is located in Room 5062 Young Hall

    E-Print Network [OSTI]

    Koehler, Carla

    Young Hall: Nexcelom Bioscience Automatic Cell Counter (Cellometer Auto M10) Thermo Scientific Nanodrop 2000 Spectrophotometer Hewlett-Packard HP8453 diode-array UV/Visible spectrophotometer with Peltier Dichroism spectrophotometer, with Peltier temperature control and auto-titration attachments Applied

  1. Page 28 Housing Services Sonoma State University 2011-2012 Catalog Zinfandel Hall

    E-Print Network [OSTI]

    Ravikumar, B.

    Page 28 Housing Services Sonoma State University 2011-2012 Catalog Zinfandel Hall (707) 664-2541 Fax: (707) 664-4158 e-mail: ssu.housing@sonoma.edu www.sonoma.edu/housing On-Campus Housing The Residential Community provides comfortable, convenient cam- pus housing for 3,000 single students

  2. Page 28 Housing Services Sonoma State University 2012-2013 Catalog Zinfandel Hall

    E-Print Network [OSTI]

    Ravikumar, B.

    Page 28 Housing Services Sonoma State University 2012-2013 Catalog Zinfandel Hall (707) 664-2541 Fax: (707) 664-4158 e-mail: ssu.housing@sonoma.edu www.sonoma.edu/housing On-Campus Housing The Residential Community provides comfortable, convenient cam- pus housing for 3,000 single students

  3. Pacific Northwest Demand Response Project Lee Hall, BPA Smart Grid Program Manager

    E-Print Network [OSTI]

    Pacific Northwest Demand Response Project Lee Hall, BPA Smart Grid Program Manager February 14 utilities to invest in DR Regional situational analysis ­ issues to address #12;Nationally ­ Demand ResponseSource: FERC Demand Response & Advanced Metering Report, February 2011 Peak DR 65,000 MW 1,062 MW Peak DR

  4. See Chair's Message, page 5 moved to the few halls with

    E-Print Network [OSTI]

    Gilchrist, James F.

    See Chair's Message, page 5 moved to the few halls with power (e.g. Brodhead), whereas many others Whitaker Laboratory 5 E. Packer Ave. Bethlehem, PA 18015 www.lehigh.edu/ ~inmatsci Chair's MessageChair's MessageChair's MessageChair's Message #12;P A G E 2 Mat Camp extends outside Valley The MSE department

  5. National Residence Hall Honorary Shamrock Chapter Awards (2004-2005 to Present)

    E-Print Network [OSTI]

    Missouri-Rolla, University of

    Maloney Tori Seely #12; 2008-2009 Advisor of the Year Joni Burch Community of the Year MacAnerney Hall 2 Cunningham Jon Leek Josh Cardenzana #12; 2009-2010 Advisor of the Year Joni Burch Community of the Year of the Year Make a Child Smile Desk Attendant of the Year Eric Murray Diversity Program of the Year Lasting

  6. A high performance dual revised simplex solver Julian Hall, Qi Huangfu and Edmund Smith

    E-Print Network [OSTI]

    Hall, Julian

    A high performance dual revised simplex solver Julian Hall, Qi Huangfu and Edmund Smith School of Mathematics University of Edinburgh 2nd December 2010 A high performance dual revised simplex solver #12;Overview · LP problems and the dual simplex method · Why use dual simplex method · Why exploit parallelism

  7. A task-parallel scheme for the revised simplex method Julian Hall

    E-Print Network [OSTI]

    Hall, Julian

    SYNPLEX A task-parallel scheme for the revised simplex method Julian Hall School of Mathematics University of Edinburgh June 15th 2005 SYNPLEX, a task-parallel scheme for the revised simplex method #12;Overview · The (standard and revised) simplex method for linear programming #12;Overview · The (standard

  8. A task-parallel scheme for the revised simplex method Julian Hall

    E-Print Network [OSTI]

    Hall, Julian

    SYNPLEX A task-parallel scheme for the revised simplex method Julian Hall School of Mathematics University of Edinburgh June 23rd 2005 SYNPLEX, a task-parallel scheme for the revised simplex method #12;Overview · The (standard and revised) simplex method for linear programming #12;Overview · The (standard

  9. Parallelizing the dual revised simplex method Q. Huangfu and J. A. J. Hall

    E-Print Network [OSTI]

    Hall, Julian

    Parallelizing the dual revised simplex method Q. Huangfu and J. A. J. Hall August 29, 2014 Abstract This paper introduces the design and implementation of two par- allel dual simplex solvers for general large PAMI in achieving speedup when PAMI results in slowdown. Keywords: Revised simplex method, simplex

  10. MSU Human Resources 19 Montana Hall ~ PO Box 172520 ~ Bozeman, MT 59717-2520

    E-Print Network [OSTI]

    Dyer, Bill

    MSU Human Resources 19 Montana Hall ~ PO Box 172520 ~ Bozeman, MT 59717-2520 Tel (406) 994 with the Social Security Administration and State policies, the Human Resources procedure for Name and Address changes has been modified. The Human Resources Department uses two separate forms ­ one for name changes

  11. arXiv:cond-mat/0411737v223Nov2005 Quantum Spin Hall Effect in Graphene

    E-Print Network [OSTI]

    Cobden, David

    reported progress in the preparation of single layer graphene films. These films exhibit the expectedarXiv:cond-mat/0411737v223Nov2005 Quantum Spin Hall Effect in Graphene C.L. Kane and E.J. Mele Dept orbit interactions on the low energy electronic structure of a sin- gle plane of graphene. We find

  12. Quantum Spin Hall Effect in Graphene C. L. Kane and E. J. Mele

    E-Print Network [OSTI]

    Kane, Charles

    reported progress in the preparation of single layer graphene films. These films exhibit the expectedQuantum Spin Hall Effect in Graphene C. L. Kane and E. J. Mele Dept. of Physics and Astronomy of a single plane of graphene. We find that in an experimentally accessible low temperature regime

  13. 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)

    2014-07-15T23:59:59.000Z

    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.

  14. Stability of the Hall sensors performance under neutron irradiation , J. Stckela

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Nuclear Research Institute plc, Husinec-Rez 130, 25068 Czech Republic, c Lviv Polytechnic National are addressed in the paper. The results of irradiation tests of candidate Hall sensors in LVR-15 and IBR-2 outside the ITER vessel. 16 2 17 2 01.30.Cc, 52.55.Fa, 52.70.Ds 1. Introduction The need for steady state

  15. 2008. The Cartographic Section, Dept. of Geography, UWO /#19-09/kv To Spencer Hall

    E-Print Network [OSTI]

    Lennard, William N.

    Perth Hall University Child Care Centre UWO Books Plus Platt's Lane Estates TD Waterhouse Stadium Wind 367363357 UNIVERSITY PLATT'SLANE LAMBTON OXFORD KENT UNIVERSITY PERTH SARNIA ROAD BURNLEA WALK BRESCIALANE's University College at UWO HURON WINDERMERE ROAD GLENMORE ELGIN WESTERN ROAD PLATT'SLANE UNIVERSITY HILL

  16. Technique to Collimate Ions in a Hall-Effect Thruster Discharge Chamber

    E-Print Network [OSTI]

    Walker, Mitchell

    Technique to Collimate Ions in a Hall-Effect Thruster Discharge Chamber Kunning G. Xu and Mitchell in the discharge chamber to repel ions away from the wall and focus them toward centerline. The electrodes repel ions with trajectories that intersect the chamber wall, which results in a more collimated ion exhaust

  17. Division of Enrollment Management S107 Criser Hall Office for Student Financial Affairs PO Box 114025

    E-Print Network [OSTI]

    Pilyugin, Sergei S.

    14/15 Division of Enrollment Management S107 Criser Hall Office for Student Financial Affairs PO or withheld from earnings), including amounts reported on the W-2 forms Boxes 12a through 12d, codes D, E, F of the military, clergy, and others (including cash payments and cash value of benefits). Don't include the value

  18. Division of Enrollment Management S107 Criser Hall Office for Student Financial Affairs PO Box 114025

    E-Print Network [OSTI]

    Slatton, Clint

    12/13 Division of Enrollment Management S107 Criser Hall Office for Student Financial Affairs PO earnings), including amounts reported on the W-2 forms Boxes 12a through 12d, codes D, E, F, G, H of the military, clergy, and others (including cash payments and cash value of benefits). Don't include the value

  19. Division of Enrollment Management S107 Criser Hall Office for Student Financial Affairs PO Box 114025

    E-Print Network [OSTI]

    Pilyugin, Sergei S.

    14/15 Division of Enrollment Management S107 Criser Hall Office for Student Financial Affairs PO earnings), including amounts reported on the W-2 forms Boxes 12a through 12d, codes D, E, F, G, H and S of the military, clergy, and others (including cash payments and cash value of benefits). Don't include the value

  20. Division of Enrollment Management S107 Criser Hall Office for Student Financial Affairs PO Box 114025

    E-Print Network [OSTI]

    Pilyugin, Sergei S.

    13/14 Division of Enrollment Management S107 Criser Hall Office for Student Financial Affairs PO earnings), including amounts reported on the W-2 forms Boxes 12a through 12d, codes D, E, F, G, H cash payments and cash value of benefits). Don't include the value of on-base military housing

  1. Division of Enrollment Management S107 Criser Hall Office for Student Financial Affairs PO Box 114025

    E-Print Network [OSTI]

    Pilyugin, Sergei S.

    13/14 Division of Enrollment Management S107 Criser Hall Office for Student Financial Affairs PO or withheld from earnings), including amounts reported on the W-2 forms Boxes 12a through 12d, codes D, E, F, clergy, and others (including cash payments and cash value of benefits). Don't include the value of on

  2. Genomic instability and bystander effects induced by high-LET radiation Eric J Hall*,1

    E-Print Network [OSTI]

    of the radiobiological effects of high- linear energy transfer (LET) radiation is essential for radiation protectionGenomic instability and bystander effects induced by high-LET radiation Eric J Hall*,1 and Tom K, it has always been accepted that the deleterious effects of ionizing radiation, such as mutation

  3. Coulomb Oscillations in Antidots in the Integer and Fractional Quantum Hall Regimes

    E-Print Network [OSTI]

    A. Kou; C. M. Marcus; L. N. Pfeiffer; K. W. West

    2012-01-08T23:59:59.000Z

    We report measurements of resistance oscillations in micron-scale antidots in both the integer and fractional quantum Hall regimes. In the integer regime, we conclude that oscillations are of the Coulomb type from the scaling of magnetic field period with the number of edges bound to the antidot. Based on both gate-voltage and field periods, we find at filling factor {\

  4. Resistance Fluctuations and AharonovBohm-Type Oscillations in Antidot Arrays in the Quantum Hall Regime

    E-Print Network [OSTI]

    Iye, Yasuhiro

    Resistance Fluctuations and Aharonov­Bohm-Type Oscillations in Antidot Arrays in the Quantum Hall fluctuations (RFs) and the other is the Aharonov­Bohm (AB)-type oscillations. Their dependences on the magnetic field and the gate voltage are quite distinct. While the aperiodic RFs are attributed to the complex

  5. Coulomb Oscillations in Antidots in the Integer and Fractional Quantum Hall Regimes

    E-Print Network [OSTI]

    Kou, A; Pfeiffer, L N; West, K W

    2012-01-01T23:59:59.000Z

    We report measurements of resistance oscillations in micron-scale antidots in both the integer and fractional quantum Hall regimes. In the integer regime, we conclude that oscillations are of the Coulomb type from the scaling of magnetic field period with the number of edges bound to the antidot. Based on both gate-voltage and field periods, we find at filling factor {\

  6. Understanding Pound-Drever-Hall locking using voltage controlled radio-frequency oscillators: An undergraduate experiment

    E-Print Network [OSTI]

    Le Roy, Robert J.

    Understanding Pound-Drever-Hall locking using voltage controlled radio-frequency oscillators. The three main pieces of equipment are a commercial voltage controlled oscillator, a resonating cavity of the voltage controlled oscillator. The cavity resonance is then observed by scanning the frequency

  7. Non-parametric Bootstrap Recycling Val erie Ventura, Department of Statistics, Baker Hall 132

    E-Print Network [OSTI]

    Non-parametric Bootstrap Recycling Val#19;erie Ventura, Department of Statistics, Baker Hall 132 adjustments. The amount of computation involved is usually considerable, and recycling provides a less computer intensive alternative. Recycling consists of using repeatedly the same samples drawn from

  8. Nonparametric Bootstrap Recycling Val'erie Ventura, Department of Statistics, Baker Hall 132

    E-Print Network [OSTI]

    Nonparametric Bootstrap Recycling Val'erie Ventura, Department of Statistics, Baker Hall 132. The amount of computation involved is usually considerable, and recycling provides a less computer intensive alternative. Recycling consists of using repeatedly the same samples drawn from a recycling distribution G

  9. HIGH ACCURACY BEAM CURRENT MONITOR SYSTEM FOR CEBAF'S EXPERIMENTAL HALL A *

    E-Print Network [OSTI]

    Boyer, Edmond

    HIGH ACCURACY BEAM CURRENT MONITOR SYSTEM FOR CEBAF'S EXPERIMENTAL HALL A * J.-C. Denard , A. Saha, Université Blaise Pascal IN2P3-CNRS Abstract CEBAF accelerator delivers continuous wave (CW) electron beams for measuring accurately the linearity is described. 1 INTRODUCTION The CEBAF accelerator delivers continuous

  10. 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. [Cornell University, Ithaca, New York 14853 (United States)] [Cornell University, Ithaca, New York 14853 (United States)

    2014-05-15T23:59:59.000Z

    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)

  11. Effective anomalous Hall coefficient in an ultrathin Co layer sandwiched by Pt layers

    SciTech Connect (OSTI)

    Zhang, Peng; Wu, Di; Jiang, Zhengsheng; Sang, Hai, E-mail: weiwei.lin@u-psud.fr, E-mail: haisang@nju.edu.cn [National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093 (China); Lin, Weiwei, E-mail: weiwei.lin@u-psud.fr, E-mail: haisang@nju.edu.cn [National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093 (China); Institut d'Electronique Fondamentale, Université Paris-Sud, Orsay 91405 (France)

    2014-02-14T23:59:59.000Z

    Anomalous Hall effect in Co/Pt multilayer is important to study the effect of interface with strong spin-orbit coupling. However, the shunting effect of the layers in such system and the circuit in the plane perpendicular to the injected current were overlooked in most works and thus, anomalous Hall coefficient in Co/Pt multilayer has not been determined accurately. Considering the shunting effect and the equivalent circuit, we show that the effective anomalous Hall coefficient of a 0.5?nm thick Co layer sandwiched by Pt layers R{sub S} is 0.29?±?0.01????cm/T at the zero temperature limit and increases to about 0.73????cm/T at the temperature of 300?K. R{sub S} is one order larger than that in bulk Co film, indicating the large contribution of the Co/Pt interface. R{sub S} increases with the resistivity of Co as well as a resistivity independent contribution of ?0.23?±?0.01????cm/T. The equivalent anomalous Hall current in the Co layer has a maximum of 1.1% of the injected transverse current in the Co layer around the temperature of 80?K.

  12. Confinement-deconfinement transition due to spontaneous symmetry breaking in quantum Hall bilayers

    E-Print Network [OSTI]

    Pikulin, D I; Hyart, T

    2015-01-01T23:59:59.000Z

    Band-inverted electron-hole bilayers support quantum spin Hall insulator and exciton condensate phases [1-4]. We investigate such a bilayer in an external magnetic field. We show that the interlayer correlations lead to a formation of a helical quantum Hall exciton condensate state. In contrast to the chiral edge states of the quantum Hall exciton condensate in electron-electron bilayers [5-7], existence of the electron and hole counterpropagating edge modes result in formation of a ground state spin-texture not supporting gapless single-particle excitations. This feature has deep consequences for the low energy behavior of the system. Namely, the charged edge excitations in a sufficiently narrow Hall bar are confined i.e. a charge on one of the edges always gives rise to an opposite charge on the other edge. Moreover, we show that a magnetic field and gate voltages allow to control a confinement-deconfinement transition of charged edge excitations, which can be probed with nonlocal conductance. Confinement-d...

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

    Reports and Publications (EIA)

    2011-01-01T23:59:59.000Z

    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.

  14. Non-Commutative Geometry in Higher Dimensional Quantum Hall Effect as A-Class Topological Insulator

    E-Print Network [OSTI]

    Kazuki Hasebe

    2014-08-04T23:59:59.000Z

    We clarify relations between the higher dimensional quantum Hall effect and A-class topological insulator. In particular, we elucidate physical implications of the higher dimensional non-commutative geometry in the context of A-class topological insulator. This presentation is based on arXiv:1403.5066.

  15. SUSAN BLAKE CURRICULUM VITAE 1033 E. Third St., Sycamore Hall 026, Bloomington, IN 47405

    E-Print Network [OSTI]

    Indiana University

    Blake CV 1 SUSAN BLAKE CURRICULUM VITAE 1033 E. Third St., Sycamore Hall 026, Bloomington, IN 47405 blakes@indiana.edu 217-419-6860 AOS: epistemology; philosophy of perception; Chinese philosophy. AOC, Philosophy PhD program, 2006--present. Dissertation: Mental Content and Epistemic Foundations. Director: Gary

  16. UO Retirement Recognition Reception Pap Reception Hall, J.S. Museum of Art

    E-Print Network [OSTI]

    Oregon, University of

    UO Retirement Recognition Reception Papé Reception Hall, J.S. Museum of Art Thursday, June 16, 2011 Information Services 29½ Years Richard Edwards Early Childhood CARES 11 Years Kayla Hinds Architecture will not be attending the retirement reception. They asked that we announce their retirement. Robert Barton Theatre Arts

  17. Grid Code Facility / Building Name M36 525 Addams Fine Arts Hall

    E-Print Network [OSTI]

    Sharp, Kim

    38 7039 Walnut Street, 3809 N34 620 Williams Hall Athletic Facilities M31 85 Class of 1923 Ice Rink N 80 Class of 1920 Commons M31 85 Class of 1923 Ice Rink P34 92 Clinical Research Building N34 310

  18. Electrical Readout of the Local Nuclear Polarization in the Quantum Hall Effect: A Hyperfine Battery

    E-Print Network [OSTI]

    Lorke, Axel

    Electrical Readout of the Local Nuclear Polarization in the Quantum Hall Effect: A Hyperfine Battery A. Wu¨rtz,1,* T. Mu¨ller,1 A. Lorke,1, D. Reuter,2 and A. D. Wieck2 1 Laboratorium fu¨r Festko which utilizes separately contacted edge states to establish a local nuclear spin polarization

  19. Observation of Chiral Heat Transport in the Quantum Hall Regime G. Granger,1

    E-Print Network [OSTI]

    Eisenstein, Jim

    91125, USA 2 Sandia National Laboratories, Albuquerque, New Mexico 87185, USA (Received 17 October 2008 are based on the thermoelectric effect. In the ¼ 1 integer quantized Hall state, a thermoelectric signal, the thermoelectric signal is reduced, showing that the electrons cool as they propagate along the edge. DOI: 10

  20. "Impact of heavy adatom segregation on the quantum spin Hall phase in graphene"

    E-Print Network [OSTI]

    Escolano, Francisco

    "Impact of heavy adatom segregation on the quantum spin Hall phase in graphene" Impartit per: David physics is to realize a topological insulating phase in 2-dimensional Graphene [1,2]. Recent theoretical studies have shown that dissipation-less edge conducting channels emerge in graphene nanoribbons when

  1. "Impact of heavy adatom segregation on the quantum spin Hall phase in graphene"

    E-Print Network [OSTI]

    Escolano, Francisco

    "Impact of heavy adatom segregation on the quantum spin Hall phase in graphene" Impartido por physics is to realize a topological insulating phase in 2-dimensional Graphene [1,2]. Recent theoretical studies have shown that dissipation-less edge conducting channels emerge in graphene nanoribbons when

  2. "Impact of heavy adatom segregation on the quantum spin Hall phase in graphene"

    E-Print Network [OSTI]

    Escolano, Francisco

    "Impact of heavy adatom segregation on the quantum spin Hall phase in graphene" By: David Soriano is to realize a topological insulating phase in 2-dimensional Graphene [1,2]. Recent theoretical studies have shown that dissipation-less edge conducting channels emerge in graphene nanoribbons when doped with soft

  3. Title: Electron-Hole Asymmetric Integer and Fractional Quantum Hall Effect in Bilayer Graphene

    E-Print Network [OSTI]

    Yacoby, Amir

    Title: Electron-Hole Asymmetric Integer and Fractional Quantum Hall Effect in Bilayer Graphene graphene is predicted to pro- duce novel and tunable FQH ground states. Here we present local electronic compressibility measurements of the FQH effect in the lowest Landau level of bilayer graphene. We observe

  4. Plasma-Induced Erosion on Ceramic Wall Structures in Hall-Effect Thrusters

    E-Print Network [OSTI]

    Walker, Mitchell

    Plasma-Induced Erosion on Ceramic Wall Structures in Hall-Effect Thrusters Thomas Burton University expansion of BN in the amorphous silica matrix. Exfoliation accompanied the microcracking in BN and resulted]. There have been several studies on ion-based erosion in ceramic materials [5­8,10­17]. The mechanisms

  5. High performance computing and the simplex method Julian Hall, Qi Huangfu and Edmund Smith

    E-Print Network [OSTI]

    Hall, Julian

    High performance computing and the simplex method Julian Hall, Qi Huangfu and Edmund Smith School of Mathematics University of Edinburgh 12th April 2011 High performance computing and the simplex method #12;The... ... but methods for all three depend on it! High performance computing and the simplex method 1 #12;Overview · LP

  6. The Effect of Magnetic Field on the Performance of Low-Power Cylindrical Hall Thrusters

    E-Print Network [OSTI]

    The Effect of Magnetic Field on the Performance of Low-Power Cylindrical Hall Thrusters IEPC-2005-099 Presented at the 29th International Electric Propulsion Conference, Princeton University, October 31 for scaling down. The effect of the magnetic field on the discharge characteristics and efficiency of the low

  7. Internal plasma potential measurements of a Hall thruster using plasma lens focusing

    SciTech Connect (OSTI)

    Linnell, Jesse A.; Gallimore, Alec D. [Plasmadynamics and Electric Propulsion Laboratory, Department of Aerospace Engineering, University of Michigan, 1919 Green Road, Room B107, Ann Arbor, Michigan 48109 (United States)

    2006-10-15T23:59:59.000Z

    Magnetic field topology has been found to be a central design concern for high-efficiency Hall thrusters. For future improvements in Hall thruster design, it is necessary to better understand the effects that magnetic field topology has on the internal plasma structure. The Plasmadynamics and Electric Propulsion Laboratory's High-speed Axial Reciprocating Probe system is used in conjunction with a floating emissive probe to map the internal plasma potential structure of the NASA-173Mv1 Hall thruster [R. R. Hofer, R. S. Jankovsky, and A. D. Gallimore, J. Propul. Power 22, 721 (2006); 22, 732 (2006)]. Measurements are taken at 300 and 500 V with a xenon propellant. Electron temperature and electric field are also measured and reported. The acceleration zone and equipotential lines are found to be strongly linked to the magnetic field lines. Moreover, in some cases the ions are accelerated strongly toward the center of the discharge channel. The agreement between magnetic field lines and equipotential lines is best for high-voltage operation. These results have strong implications on the performance and lifetime optimization of Hall thrusters.

  8. Discharge Oscillations in a Permanent Magnet Cylindrical Hall-Effect Thruster

    E-Print Network [OSTI]

    circuit leaves very little room for magnetic pole pieces and heat shields. Propulsion Research EngineerDischarge Oscillations in a Permanent Magnet Cylindrical Hall-Effect Thruster IEPC-2009-122 Presented at the 31st International Electric Propulsion Conference, Ann Arbor, MI September 20-24, 2009 K

  9. Experimental and theoretical studies of cylindrical Hall thrustersa... Artem Smirnov,b

    E-Print Network [OSTI]

    The Hall thruster is a mature electric propulsion device that holds considerable promise in terms for further optimization of this means for low-power space propulsion are suggested. Substantial flexibility in the magnetic field configuration of the CHT is the key tool in achieving the high-efficiency operation. © 2007

  10. Office of Residential Life and Learning, South Hall Call (617) 627-3248

    E-Print Network [OSTI]

    Tufts University

    Office of Residential Life and Learning, South Hall Call (617) 627-3248 Fax (617) 627-3929 Email Commencement Week must have their supervisor or coach submit a group or team list to Residential Life and Learning by 5 p.m. on Friday, April 15, 2011. I understand that the Office of Residential Life and Learning

  11. 262 SDSU General Catalog 2014-2015 OFFICE: Storm Hall 314

    E-Print Network [OSTI]

    Gallo, Linda C.

    as the arrangement of societies on the earth's surface, water and land use patterns, urban- ization and urban life262 SDSU General Catalog 2014-2015 OFFICE: Storm Hall 314 TELEPHONE: 619-594-5437 / FAX: 619 modeling applied to environmental, ecological, health, and geographical systems, is the third holder

  12. Genetic susceptibility to radiation E.J. Hall *, D.J. Brenner, B. Worgul, L. Smilenov

    E-Print Network [OSTI]

    Brenner, David Jonathan

    Genetic susceptibility to radiation E.J. Hall *, D.J. Brenner, B. Worgul, L. Smilenov Columbia the human population includes genetically predisposed radio- sensitive subsets. One possibility Published by Elsevier Ltd on behalf of COSPAR. Keywords: Heavy ions; Cataracts; Transformation; Genetic

  13. Half integer quantum Hall effect in high mobility single layer epitaxial graphene

    E-Print Network [OSTI]

    Half integer quantum Hall effect in high mobility single layer epitaxial graphene Xiaosong Wu,1 of is demonstrated here on a single graphene layer grown on the C-face of 4H silicon carbide. The mobility is 20 000. This is comparable to the best exfoliated graphene flakes on SiO2 and an order of magnitude larger than Si

  14. Quantum Hall phases and plasma analogy in rotating trapped Bose gases

    E-Print Network [OSTI]

    . In this regime, the atoms all condense in the same one-particle state and the gas forms a Bose. Our analysis is based on the interpretation of the densities of quantum Hall trial states as Gibbs-Einstein condensate (BEC). Th

  15. Multigrid Method for a Global Hall Conductor in the Earth's Ionosphere

    E-Print Network [OSTI]

    with those in the interior of the domain is separated with a special boundary condition. The finite element: gyrotropic transfer, Hall conductivity, symmetrization, elliptic equation, varia­ tional principle, finite elements, multigrid method 1 Introduction Mathematical models of ionospherical electric field are boundary

  16. Design and characterization of a low cost dual differential proving ring force sensor utilizing Hall-effect sensors

    E-Print Network [OSTI]

    Rivest, Christopher W. (Christopher Warren)

    2006-01-01T23:59:59.000Z

    A novel dual differential hall-effect based proving ring force sensor has been designed, manufactured, and tested. Strain gauge based force sensors are among the most common methods of measuring static and dynamic forces, ...

  17. Advances in fully-kinetic PIC simulations of near-vacuum Hall thruster and other plasma systems

    E-Print Network [OSTI]

    Fox, Justin M., 1981-

    2007-01-01T23:59:59.000Z

    In recent years, many groups have numerically modeled the near-anode region of a Hall thruster in attempts to better understand the associated physics of thruster operation. Originally, simulations assumed a continuum ...

  18. Maximizing Multiprocessor Performance with the SUIF Compiler Mary W. Hall y Jennifer M. Anderson Saman P. Amarasinghe

    E-Print Network [OSTI]

    Pratt, Vaughan

    Maximizing Multiprocessor Performance with the SUIF Compiler Mary W. Hall y Jennifer M. Anderson and NSF. Jennifer Anderson is currently a researcher with Digital Equipment's Western Research Lab. 1 #12

  19. Probing spin entanglement by gate-voltage-controlled interference of current correlation in quantum spin Hall insulators

    E-Print Network [OSTI]

    Wei Chen; Z. D. Wang; R. Shen; D. Y. Xing

    2014-05-21T23:59:59.000Z

    We propose an entanglement detector composed of two quantum spin Hall insulators and a side gate deposited on one of the edge channels. For an ac gate voltage, the differential noise contributed from the entangled electron pairs exhibits the nontrivial step structures, from which the spin entanglement concurrence can be easily obtained. The possible spin dephasing effects in the quantum spin Hall insulators are also included.

  20. Coulomb interaction and magnetic catalysis in the quantum Hall effect in graphene

    E-Print Network [OSTI]

    E. V. Gorbar; V. P. Gusynin; V. A. Miransky; I. A. Shovkovy

    2012-02-01T23:59:59.000Z

    The dynamics of symmetry breaking responsible for lifting the degeneracy of the Landau levels in the integer quantum Hall effect in graphene is studied in a low-energy model with the Coulomb interaction. The gap equation for Dirac quasiparticles is analyzed for both the lowest and higher Landau levels, taking into account the Landau levels mixing. It is shown that the characteristic feature of the long-range Coulomb interaction is the decrease of the gap parameters with increasing the Landau level index $n$ ("running" gaps). The renormalization (running) of the Fermi velocity as a function of $n$ is also studied. The solutions of the gap equation reproduce correctly the experimentally observed integer quantum Hall plateaus in graphene in strong magnetic fields.

  1. Interface engineering of quantum Hall effects in digital transition metal oxide heterostructures

    SciTech Connect (OSTI)

    Xiao, Di [ORNL; Zhu, Wenguang [University of Tennessee, Knoxville (UTK); Ran, Ying [Boston College, Chestnut Hill; Nagaosa, Naoto [University of Tokyo, Tokyo, Japan; Okamoto, Satoshi [ORNL

    2011-01-01T23:59:59.000Z

    Topological insulators (TIs) are characterized by a non-trivial band topology driven by the spin-orbit coupling. To fully explore the fundamental science and application of TIs, material realization is indispensable. Here we predict, based on tight-binding modeling and first-principles calculations, that bilayers of perovskite-type transition-metal oxides grown along the [111] crystallographic axis are potential candidates for two-dimensional TIs. The topological band structure of these materials can be fine-tuned by changing dopant ions, substrates and external gate voltages. We predict that LaAuO$_3$ bilayers have a topologically non-trivial energy gap of about 0.15~eV, which is sufficiently large to realize the quantum spin Hall effect at room temperature. Intriguing phenomena, such as fractional quantum Hall effect, associated with the nearly flat topologically non-trivial bands found in $e_g$ systems are also discussed.

  2. 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. [Center for Magnetic Self-Organization, University of Wisconsin, 1150 University Avenue, Madison, Wisconsin 53706 (United States); Ebrahimi, F. [University of New Hampshire, 8 College Road, Durham, New Hampshire 03824 (United States)

    2012-01-15T23:59:59.000Z

    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.

  3. A proximity focusing RICH detector for kaon physics at Jefferson lab hall A

    SciTech Connect (OSTI)

    F. Garibaldi; E. Cisbani; S. Colilli; F. Cusanno; S. Frullani; R. Fratoni; F. Giuliani; M. Gricia; M. Iodice; M. Lucentini; L. Pierangeli; F. Santavenere; G.M. Urciuoli; P. Veneroni; G. De Cataldo; R. De Leo; L. Lagamba; E. Nappi; V. Paticchio; J. LeRose; B. Kross; B. Reitz; J. Segal; C. Zorn; H. Breuer

    2003-04-01T23:59:59.000Z

    Important information on the LN interaction can be obtained from High Resolution Hypernuclear Spectroscopy experiments with electromagnetic probes. A challenging experiment on electroproduction of hypernuclei is scheduled for 2003 in Hall A at Jefferson Lab. One of the challenges is the high performance particle identification system needed. The signal is expected to be rare compared to the very high pion and proton backgrounds due to the small electron and kaon detection angles. The ''standard'' Hall A PID apparatus (TOF and two aerogel threshold Cherenkov detectors) does not provide sufficient suppression of the background. Simulations and calculations have shown that a RICH detector would solve the problem. A proximity focusing fluorocarbon/CsI detector similar to the ALICE RICH detector has been designed, built, tested and commissioned. The results show that the detector performs as expected.

  4. Recent results on high resolution hypernuclear spectroscopy by electroproduction at Jefferson Lab, Hall A

    SciTech Connect (OSTI)

    F. Garibaldi; H. Breuer; P. Brindza; P. Bydzovski; G. Chang; E. Cisbani; S. Colilli; F. Cusanno; R. De Leo; G. De Cataldo; K. De Jager; R. Feuerbach; E. Folts; R. Fratoni; S. Frullani; F. Giuliani; M. Gricia; D. Higinbotham; M. Iodice; B. Kross; L. Lagamba; J.J.Le Rose; M. Lucentini; P. Markowitz; S. Marrone; R. Michaels; E. Nappi; Y. Qiang; B. Reitz; F. Santavenere; J. Segal; M. Sotona; G.M.Urciuoli; P. Veneroni; B.Wojtsekhowski; C. Zorn

    2005-12-01T23:59:59.000Z

    The first ''systematic'' study of 1 p shell hypernuclei with electromagnetic probes has started in Hall A at Jefferson Lab [?]. The aim is to perform hypernuclear high resolution spectroscopy by the electroproduction of strangeness on four 1p-shell targets: 12C, 9Be, 16O, 7Li. The first part of the experiment on 12C and 9Be has been performed in 2004, the second part (16O and 7Li) is scheduled for June 2005. To overcome the major experimental difficulties, namely the low counting rate and the challenging Particle IDentification (PID), two septum magnets and a Ring Imaging CHerenkov (RICH) detector had to be added to the existing apparatus. After underlining the particular role the electroproduction reaction plays in hypernuclear physics we describe the challenging modifications of the Hall A apparatus. Preliminary results on 12C and 9Be are presented.

  5. Effect of electron temperature anisotropy on near-wall conductivity in Hall thrusters

    SciTech Connect (OSTI)

    Zhang, Fengkui, E-mail: fengkuizhang@163.com, E-mail: yudaren@hit.edu.cn; Kong, Lingyi; Zhang, Xueyi; Li, Wei [College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001 (China); Yu, Daren, E-mail: fengkuizhang@163.com, E-mail: yudaren@hit.edu.cn [College of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001 (China)

    2014-06-15T23:59:59.000Z

    The electron velocity distribution in Hall thrusters is anisotropic, which not only makes the sheath oscillate in time, but also causes the sheath to oscillate in space under the condition of low electron temperatures. The spatial oscillation sheath has a significant effect on near-wall transport current. In this Letter, the method of particle-in-cell (2D?+?3?V) was adopted to simulate the effect of anisotropic electron temperatures on near-wall conductivity in a Hall thruster. Results show that the electron-wall collision frequency is within the same order in magnitude for both anisotropic and isotropic electron temperatures. The near-wall transport current produced by collisions between the electrons and the walls is much smaller than experimental measurements. However, under the condition of anisotropic electron temperatures, the non-collision transport current produced by slow electrons which reflected by the spatial oscillation sheath is much larger and closes to measurements.

  6. Magnetic shielding of the channel walls in a Hall plasma accelerator

    SciTech Connect (OSTI)

    Mikellides, Ioannis G.; Katz, Ira; Hofer, Richard R.; Goebel, Dan M. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (United States); Grys, Kristi de; Mathers, Alex [Aerojet, Redmond, Washington 98052 (United States)

    2011-03-15T23:59:59.000Z

    In a qualification life test of a Hall thruster it was found that the erosion of the acceleration channel practically stopped after {approx}5600 h. Numerical simulations using a two-dimensional axisymmetric plasma solver with a magnetic field-aligned mesh reveal that when the channel receded from its early-in-life to its steady-state configuration the following changes occurred near the wall: (1) reduction of the electric field parallel to the wall that prohibited ions from acquiring significant impact kinetic energy before entering the sheath, (2) reduction of the potential fall in the sheath that further diminished the total energy ions gained before striking the material, and (3) reduction of the ion number density that decreased the flux of ions to the wall. All these changes, found to have been induced by the magnetic field, constituted collectively an effective shielding of the walls from any significant ion bombardment. Thus, we term this process in Hall thrusters 'magnetic shielding'.

  7. Determination of the Pt spin diffusion length by spin-pumping and spin Hall effect

    SciTech Connect (OSTI)

    Zhang, Wei; Pearson, John E.; Hoffmann, Axel [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)] [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Vlaminck, Vincent [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States) [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Colegio de Ciencias e Ingenería, Universidad San Fransciso de Quito, Quito (Ecuador); Divan, Ralu [Center for Nanoscale Materials, Argonne National Laboratory, Illinois 60439 (United States)] [Center for Nanoscale Materials, Argonne National Laboratory, Illinois 60439 (United States); Bader, Samuel D. [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States) [Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States); Center for Nanoscale Materials, Argonne National Laboratory, Illinois 60439 (United States)

    2013-12-09T23:59:59.000Z

    The spin diffusion length of Pt at room temperature and at 8 K is experimentally determined via spin pumping and spin Hall effect in permalloy/Pt bilayers. Voltages generated during excitation of ferromagnetic resonance from the inverse spin Hall effect and anisotropic magnetoresistance effect were investigated with a broadband approach. Varying the Pt layer thickness gives rise to an evolution of the voltage line shape due to the superposition of the above two effects. By studying the ratio of the two voltage components with the Pt layer thickness, the spin diffusion length of Pt can be directly extracted. We obtain a spin diffusion length of ?1.2 nm at room temperature and ?1.6 nm at 8 K.

  8. Heat transfer in ice hockey halls: measurements, energy analysis and analytical ice pad temperature profile

    E-Print Network [OSTI]

    Andrea Ferrantelli; Klaus Viljanen

    2015-06-30T23:59:59.000Z

    We consider heat transfer processes in an ice hockey hall, during operating conditions, with a bottom-up approach based upon on-site measurements. Detailed temperature data of both the ice pad and the air above the ice rink are used for a heat balance calculation in the steady-state regime, which quantifies the impact of each single heat source. We solve the heat equation in the ice slab in transient regime, and obtain a general analytical formula for the temperature profile. This solution is then applied to the resurfacing process by using our measurements as (time-dependent) boundary conditions (b.c.), and compared to an analogous numerical computation with good agreement. Our analytical formula is given with implicit initial condition and b.c., therefore it can be used not only in ice halls, but in a large variety of engineering applications.

  9. Heat transfer in ice hockey halls: measurements, energy analysis and analytical ice pad temperature profile

    E-Print Network [OSTI]

    Ferrantelli, Andrea

    2015-01-01T23:59:59.000Z

    We consider heat transfer processes in an ice hockey hall, during operating conditions, with a bottom-up approach based upon on-site measurements. Detailed temperature data of both the ice pad and the air above the ice rink are used for a heat balance calculation in the steady-state regime, which quantifies the impact of each single heat source. We solve the heat equation in the ice slab in transient regime, and obtain a general analytical formula for the temperature profile. This solution is then applied to the resurfacing process by using our measurements as (time-dependent) boundary conditions (b.c.), and compared to an analogous numerical computation with good agreement. Our analytical formula is given with implicit initial condition and b.c., therefore it can be used not only in ice halls, but in a large variety of engineering applications.

  10. Breathing oscillations in enlarged cylindrical-anode-layer Hall plasma accelerator

    SciTech Connect (OSTI)

    Geng, S. F.; Wang, C. X. [Southwestern Institute of Physics, Chengdu 610041 (China) [Southwestern Institute of Physics, Chengdu 610041 (China); Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong (China); Tang, D. L.; Qiu, X. M. [Southwestern Institute of Physics, Chengdu 610041 (China)] [Southwestern Institute of Physics, Chengdu 610041 (China); Fu, R. K. Y. [Plasma Technology Limited, Festival Walk Tower, Tat Chee Avenue, Kowloon, Hong Kong (China)] [Plasma Technology Limited, Festival Walk Tower, Tat Chee Avenue, Kowloon, Hong Kong (China); Chu, Paul K. [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong (China)] [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong (China)

    2013-05-28T23:59:59.000Z

    Breathing oscillations in the discharge of an enlarged cylindrical-anode-layer Hall plasma accelerator are investigated by three-dimensional particle-in-cell (PIC) simulation. Different from the traditional breathing mode in a circular Hall plasma accelerator, the bulk plasma oscillation here is trigged by the potential barrier generated by the concentrated ion beam and substantial enough to compete with the anode voltage. The electric field near the anode is suppressed by the potential barrier thereby decreasing the electron density by {approx}36%. The discharge is restored to the normal level after the concentrated beam explodes and then it completes one cycle of electro-driven breathing oscillation. The breathing mode identified by the PIC simulation has a frequency range of {approx}156 kHz-{approx}250 kHz and does not vary monotonically with the discharge voltage.

  11. Characterisation of Fourteenth-Century Bell-Casting Pit in Old Town Hall Sibiu, Romania

    E-Print Network [OSTI]

    Agata Olariu; Petre Munteanu-Besliu

    1999-08-17T23:59:59.000Z

    In this work we have made an analytical investigation by neutron activation analysis and X-ray fluorescence of a number of pieces found on the two hearths and the slag layer discovered at the Old Town Hall from Sibiu, Romania and some bells from the surrounding region of Sibiu. The elemental analyses suggest the fact that the hearths preserve traces of an activity of alloying of copper with tin for casting bells.

  12. Quantum Hall Effect In Bilayer Systems And The Noncommutative Plane: A Toy Model Approach

    E-Print Network [OSTI]

    B. Basu; Subir Ghosh

    2005-07-19T23:59:59.000Z

    We have presented a quantum mechanical toy model for the study of Coulomb interactions in Quantum Hall (QH) system. Inclusion of Coulomb interaction is essential for the study of {\\it{bilayer}} QH system and our model can simulate it, in the compound state, in a perturbative framework. We also show that in the noncommutative plane, the Coulomb interaction is modified at a higher order in the noncommutativity parameter $\\theta$, and only if $\\theta$ varies from layer to layer in the QH system.

  13. SCHOOL OF EDUCATION Exam Code Exam Name Day Exam date Time Exam Hall

    E-Print Network [OSTI]

    Glasgow, University of

    SCHOOL OF EDUCATION Exam Code Exam Name Day Exam date Time Exam Hall EDUC1050_1 Electricity and Electronics T1 Fri 25/04/2014 09:30 - 11:30 Room 237 St Andrew's Building EDUC1013_1 Fundamentals in Education 1B Tue 29/04/2014 14:00 - 16:00 Gym St. Andrews Building EDUC4047_1 Materials and Processes T3 Thu

  14. Wall current closure effects on plasma and sheath fluctuations in Hall thrusters

    SciTech Connect (OSTI)

    Frias, Winston, E-mail: wpf274@mail.usask.ca; Smolyakov, Andrei I. [Department of Physics and Engineering Physics, University of Saskatchewan, 116 Science Place, Saskatoon, Saskatchewan S7N 5E2 (Canada); Kaganovich, Igor D.; Raitses, Yevgeny [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)

    2014-06-15T23:59:59.000Z

    The excitation of negative energy, ion sound type modes driven by the E?×?B drift and the reactive/dissipative response of the wall sheath interface is analyzed for conditions typical in a Hall thruster. Such sheath impedance modes are sensitive to the dielectric properties of the thruster wall material, which therefore may have direct influence (other than via the secondary electron emission) on fluctuations and transport. Our results predict mode frequencies consistent with the frequencies of fluctuations observed experimentally.

  15. Thermopower, electrical and Hall conductivity of undoped and doped iron disilicide single crystals

    SciTech Connect (OSTI)

    Heinrich, A.; Behr, G.; Griessmann, H.; Teichert, S.; Lange, H.

    1997-07-01T23:59:59.000Z

    The electrical transport properties of {beta}-FeSi{sub 2} single crystals have been investigated in dependence on the purity of the source material and on doping with 3d transition metals. The transport properties included are electrical conductivity, Hall conductivity and thermopower mainly in the temperature range from 4K to 300K. The single crystals have been prepared by chemical transport reaction in a closed system with iodine as transport agent. In undoped single crystals prepared with 5N Fe both electrical conductivity and thermopower depend on the composition within the homogeneity range of {beta}-FeSi{sub 2} which is explained by different intrinsic defects at the Si-rich and Fe-rich phase boundaries. In both undoped and doped single crystals impurity band conduction is observed at low temperatures but above 100K extrinsic behavior determined by shallow impurity states. The thermopower shows between 100K and 200K a significant phonon drag contribution which depends on intrinsic defects and additional doping. The Hall resistivity is considered mainly with respect to an anomalous contribution found in p-type and n-type single crystals and thin films. In addition doped single crystals show at temperatures below about 130K an hysteresis of the Hall voltage. These results make former mobility data uncertain. Comparison will be made between the transport properties of single crystals and polycrystalline material.

  16. Traveling waves in Hall-magnetohydrodynamics and the ion-acoustic shock structure

    SciTech Connect (OSTI)

    Hagstrom, George I.; Hameiri, Eliezer [Courant Institute of Mathematical Sciences, New York, New York 10012 (United States)] [Courant Institute of Mathematical Sciences, New York, New York 10012 (United States)

    2014-02-15T23:59:59.000Z

    Hall-magnetohydrodynamics (HMHD) is a mixed hyperbolic-parabolic partial differential equation that describes the dynamics of an ideal two fluid plasma with massless electrons. We study the only shock wave family that exists in this system (the other discontinuities being contact discontinuities and not shocks). We study planar traveling wave solutions and we find solutions with discontinuities in the hydrodynamic variables, which arise due to the presence of real characteristics in Hall-MHD. We introduce a small viscosity into the equations and use the method of matched asymptotic expansions to show that solutions with a discontinuity satisfying the Rankine-Hugoniot conditions and also an entropy condition have continuous shock structures. The lowest order inner equations reduce to the compressible Navier-Stokes equations, plus an equation which implies the constancy of the magnetic field inside the shock structure. We are able to show that the current is discontinuous across the shock, even as the magnetic field is continuous, and that the lowest order outer equations, which are the equations for traveling waves in inviscid Hall-MHD, are exactly integrable. We show that the inner and outer solutions match, which allows us to construct a family of uniformly valid continuous composite solutions that become discontinuous when the diffusivity vanishes.

  17. N T Ex s E L Rabih Talhouk Graduate Council Chairperson 4386 rtalhouk@aub.edu.lb College Hall Room 432

    E-Print Network [OSTI]

    Shihadeh, Alan

    (2192/317) urex Hall (3244) Ne Wo en's Dor s (3362) Fire 5555 E er ency edical Assistance 7777 rotec

  18. Use of emission spectroscopy for real-time assessment of relative wall erosion rate of BHT-200 hall thruster for various regimes of operation

    E-Print Network [OSTI]

    Çelik, Murat Alp

    Radiation emission due to Boron atoms sputtered from the Boron-Nitride ceramic walls of a BHT-200 Hall thruster was measured as

  19. Cavity-enhanced optical Hall effect in two-dimensional free charge carrier gases detected at terahertz frequencies

    E-Print Network [OSTI]

    Knight, S; Darakchieva, V; Kühne, P; Carlin, J -F; Grandjean, N; Herzinger, C M; Schubert, M; Hofmann, T

    2015-01-01T23:59:59.000Z

    The effect of a tunable, externally coupled Fabry-P\\'{e}rot cavity to resonantly enhance the optical Hall effect signatures at terahertz frequencies produced by a traditional Drude-like two-dimensional electron gas is shown and discussed in this communication. As a result, the detection of optical Hall effect signatures at conveniently obtainable magnetic fields, for example by neodymium permanent magnets, is demonstrated. An AlInN/GaN-based high electron mobility transistor structure grown on a sapphire substrate is used for the experiment. The optical Hall effect signatures and their dispersions, which are governed by the frequency and the reflectance minima and maxima of the externally coupled Fabry-P\\'{e}rot cavity, are presented and discussed. Tuning the externally coupled Fabry-P\\'{e}rot cavity strongly modifies the optical Hall effect signatures, which provides a new degree of freedom for optical Hall effect experiments in addition to frequency, angle of incidence and magnetic field direction and stren...

  20. Invited Article: An integrated mid-infrared, far-infrared, and terahertz optical Hall effect instrument

    SciTech Connect (OSTI)

    Kühne, P., E-mail: kuehne@huskers.unl.edu; Schubert, M., E-mail: schubert@engr.unl.edu; Hofmann, T., E-mail: thofmann@engr.unl.edu [Department of Electrical Engineering and Center for Nanohybrid Functional Materials, University of Nebraska-Lincoln, Lincoln, Nebraska 68588 (United States); Herzinger, C. M., E-mail: cherzinger@jawoollam.com; Woollam, J. A., E-mail: jwoollam@jawoollam.com [J. A. Woollam Co., Inc., 645 M Street, Suite 102, Lincoln, Nebraska 68508-2243 (United States)

    2014-07-15T23:59:59.000Z

    We report on the development of the first integrated mid-infrared, far-infrared, and terahertz optical Hall effect instrument, covering an ultra wide spectral range from 3 cm{sup ?1} to 7000 cm{sup ?1} (0.1–210 THz or 0.4–870 meV). The instrument comprises four sub-systems, where the magneto-cryostat-transfer sub-system enables the usage of the magneto-cryostat sub-system with the mid-infrared ellipsometer sub-system, and the far-infrared/terahertz ellipsometer sub-system. Both ellipsometer sub-systems can be used as variable angle-of-incidence spectroscopic ellipsometers in reflection or transmission mode, and are equipped with multiple light sources and detectors. The ellipsometer sub-systems are operated in polarizer-sample-rotating-analyzer configuration granting access to the upper left 3 × 3 block of the normalized 4 × 4 Mueller matrix. The closed cycle magneto-cryostat sub-system provides sample temperatures between room temperature and 1.4 K and magnetic fields up to 8 T, enabling the detection of transverse and longitudinal magnetic field-induced birefringence. We discuss theoretical background and practical realization of the integrated mid-infrared, far-infrared, and terahertz optical Hall effect instrument, as well as acquisition of optical Hall effect data and the corresponding model analysis procedures. Exemplarily, epitaxial graphene grown on 6H-SiC, a tellurium doped bulk GaAs sample and an AlGaN/GaN high electron mobility transistor structure are investigated. The selected experimental datasets display the full spectral, magnetic field and temperature range of the instrument and demonstrate data analysis strategies. Effects from free charge carriers in two dimensional confinement and in a volume material, as well as quantum mechanical effects (inter-Landau-level transitions) are observed and discussed exemplarily.

  1. 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 Zürich, CH-8093 Zürich (Switzerland); Butti, P.; Shorubalko, I. [Swiss Federal Laboratories of Materials Science and Technologies, EMPA Elect. Metrol. Reliabil. Lab., CH-8600 Dübendorf (Switzerland); Taniguchi, T.; Watanabe, K. [National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan)

    2014-08-21T23:59:59.000Z

    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.

  2. Magnetic shielding of a laboratory Hall thruster. I. Theory and validation

    SciTech Connect (OSTI)

    Mikellides, Ioannis G., E-mail: Ioannis.G.Mikellides@jpl.nasa.gov; Katz, Ira; Hofer, Richard R.; Goebel, Dan M. [Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109 (United States)

    2014-01-28T23:59:59.000Z

    We demonstrate a technique by which erosion of the acceleration channel in Hall thrusters can be reduced by at least a few orders of magnitude. The first principles of the technique, now known as “magnetic shielding,” have been derived based on the findings of 2-D numerical simulations. The simulations, in turn, guided the modification of an existing 6-kW laboratory Hall thruster to test the theory and are the main subject of this Part I article. Part II expands on the results of the experiments. Near the walls of the magnetically shielded (MS) thruster theory and experiment agree that (1) the plasma potential has been sustained at values near the discharge voltage, and (2) the electron temperature has been lowered compared to the unshielded thruster. Erosion rates deduced directly from the wall probes show reductions of at least ?3 orders of magnitude at the MS inner wall when an ion energy threshold of 30.5?V is used in the sputtering yield model of the channel material. At the outer wall the probes reveal that the ion energy was below the assumed threshold. Using a threshold of 25?V, the simulations predict a minimum reduction of ?600 at the MS inner wall. At the MS outer wall ion energies are found to be below 25?V. When a 50-V threshold is used the computed ion energies are below the threshold at both sides of the channel. Uncertainties, sensitivities, and differences between theory and experiment are also discussed. The elimination of wall erosion in Hall thrusters solves a problem that has remained unsettled for more than five decades.

  3. All-optical Hall effect by the dynamic toroidal moment in a cavity-based metamaterial

    E-Print Network [OSTI]

    Dong, Zheng-Gao; Yin, Xiaobo; Li, Jiaqi; Lu, Changgui; Zhang, Xiang

    2013-01-01T23:59:59.000Z

    Dynamic dipolar toroidal response is demonstrated by an optical plasmonic metamaterial composed of double disks. This response with a hotspot of localized E-field concentration is a well-behaved toroidal cavity mode that exhibits a large Purcell factor due to its deep-subwavelength mode volume. All-optical Hall effect (photovoltaic) due to this optical toroidal moment is demonstrated numerically, in mimicking the magnetoelectric effect in multiferroic systems. The result shows a promising avenue to explore various optical phenomena associated with this intriguing dynamic toroidal moment.

  4. Anomalous Quantum Hall Effect of 4D Graphene in Background Fields

    E-Print Network [OSTI]

    L. B Drissi; H. Mhamdi; E. H Saidi

    2011-09-05T23:59:59.000Z

    Bori\\c{c}i-Creutz (\\emph{BC}) model describing the dynamics of light quarks in lattice \\emph{QCD} has been shown to be intimately linked to the four dimensional extension of 2D graphene refereed below to as four dimensional graphene (\\emph{4D-graphene}). Borrowing ideas from the field theory description of the usual \\emph{2D} graphene, we study in this paper the anomalous quantum Hall effect (AQHE) of the \\emph{BC} fermions in presence of a constant background field strength $\\mathcal{F}_{\\mu \

  5. Hall-Coefficient and Resistivity of Amorphous Ti1-Xalx Films

    E-Print Network [OSTI]

    RATHNAYAKA, KDD; HENNINGS, BD; Naugle, Donald G.

    1993-01-01T23:59:59.000Z

    . INTRODUCTION The Hall coefficients of amorphous metals are general- ly positive when the alloy is dominated by an early- transition-metal component. (See reviews by Howson and Gallager, ' Mizutani, Naugle, and Naugle and Rhie. ) This has been thoroughly... investigated for early- transition-metal ?late-transition-metal (ETM-LTM) al- loys. The Zr-based amorphous alloys [Zr-Cu, ' Zr-Ni, Zr-Co, ' Zr-Fe (Refs. 8 and 11)] compose one of the most completely studied ETM-LTM alloy system. As the composition...

  6. Nonvanishing spin Hall currents in disordered spin-orbit coupling systems 

    E-Print Network [OSTI]

    Nomura, K.; Sinova, Jairo; Jungwirth, T.; Niu, Q.; MacDonald, A. H.

    2005-01-01T23:59:59.000Z

    . 2, are consistent with expectations for this thoroughly studied quantity.35 Our main interest at present, however, is the system size dependence of the spin Hall conductivity ssH and particularly in establish- ing whether or not it vanishes... quasiparticle velocity and the z compo- nent of spin induced by an electric field; for an electric field in the x direction, an up spin is induced in positive y-component velocity majority-band states and a correspond- ing down spin at negative velocities...

  7. Quantum Spin Hall Effect and Topological Phase Transition in HgTe Quantum Wells

    SciTech Connect (OSTI)

    Bernevig, A.

    2010-03-02T23:59:59.000Z

    We show that the quantum spin Hall (QSH) effect, a state of matter with topological properties distinct from those of conventional insulators, can be realized in mercury telluride-cadmium telluride semiconductor quantum wells. When the thickness of the quantum well is varied, the electronic state changes from a normal to an 'inverted' type at a critical thickness d{sub c}. We show that this transition is a topological quantum phase transition between a conventional insulating phase and a phase exhibiting the QSH effect with a single pair of helical edge states. We also discuss methods for experimental detection of the QSH effect.

  8. 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; Benmokhtar, F; Camsonne, A; Dalton, M; Franklin, G B; Mamyan, V; Michaels, R; Nanda, S; Nelyubin, V; Paschke, K; Quinn, B; Rakhman, A; Souder, P

    2012-06-01T23:59:59.000Z

    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.

  9. Characterizing low-frequency oscillation of Hall thrusters by dielectric wall temperature variation

    SciTech Connect (OSTI)

    Ning, Guo [Science and Technology on Vacuum and Cryogenics Technology and Physics Laboratory, Lanzhou 730013 (China); Liqiu, Wei, E-mail: weiliqiu@gmail.com, E-mail: weiliqiu@hit.edu.cn; Yongjie, Ding [Harbin Institute of Technology, Mail Box 3047, Harbin 150001 (China)

    2014-05-15T23:59:59.000Z

    The low-frequency oscillation characteristics of a Hall thruster were investigated by varying the dielectric wall temperature. Experimental results indicate that increasing the dielectric wall temperature can result in an increase in the amplitude of low-frequency oscillation and a slight decrease in its frequency. Physical analysis revealed that this change is related to the secondary electron emissions at different dielectric wall temperatures. The evidence suggests that this technique can serve as an effective way for future studies to examine how secondary electron emissions affect a discharging thruster.

  10. Inverse spin Hall effect induced by spin pumping into semiconducting ZnO

    SciTech Connect (OSTI)

    Lee, Jung-Chuan [Institute of Physics, Academia Sinica, Taipei 11529, Taiwan (China); Huang, Leng-Wei [Graduate Institute of Applied Physics, National Chengchi University, Taipei 11605, Taiwan (China); Hung, Dung-Shing, E-mail: dshung@mail.mcu.edu.tw [Institute of Physics, Academia Sinica, Taipei 11529, Taiwan (China); Department of Information and Telecommunications Engineering, Ming Chuan University, Taipei 111, Taiwan (China); Chiang, Tung-Han [Department of Physics, National Cheng Kung University, Tainan 70101, Taiwan (China); Huang, J. C. A., E-mail: jcahuang@mail.ncku.edu.tw [Department of Physics, National Cheng Kung University, Tainan 70101, Taiwan (China); Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 70101, Taiwan (China); Liang, Jun-Zhi [Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 70101, Taiwan (China); Department of Physics, Fu Jen Catholic University, Taipei 242, Taiwan (China); Lee, Shang-Fan, E-mail: leesf@phys.sinica.edu.tw [Institute of Physics, Academia Sinica, Taipei 11529, Taiwan (China); Graduate Institute of Applied Physics, National Chengchi University, Taipei 11605, Taiwan (China)

    2014-02-03T23:59:59.000Z

    The inverse spin Hall effect (ISHE) of n-type semiconductor ZnO thin films with weak spin-orbit coupling has been observed by utilizing the spin pumping method. In the ferromagnetic resonance condition, the spin pumping driven by the dynamical exchange interaction of a permalloy film injects a pure spin current into the adjacent ZnO layer. This spin current gives rise to a DC voltage through the ISHE in the ZnO layer, and the DC voltage is proportional to the microwave excitation power. The effect is sizeable even when the spin backflow is considered.

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

    SciTech Connect (OSTI)

    ?uran, Ivan; Mušálek, Radek; Kova?ík, Karel [Institute of Plasma Physics AS CR, Za Slovankou 3, 182 00 Praha 8 (Czech Republic); Sentkerestiová, Jana [Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, B?ehová 7, 115 19 Praha 1 (Czech Republic); Kohout, Michal [Institute of Physics AS CR, Na Slovance 1999/2, 182 21 Praha 8 (Czech Republic); Viererbl, Ladislav [Research Centre Rez, Hlavní 130, 250 68 Husinec-?ež (Czech Republic)

    2014-08-21T23:59:59.000Z

    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.

  12. An axially propagating two-stream instability in the Hall thruster plasma

    SciTech Connect (OSTI)

    Tsikata, S., E-mail: sedina.tsikata@cnrs-orleans.fr [ICARE, CNRS (UPR 3021), 1C ave. de la Recherche Scientifique, 45071 Orléans (France); Cavalier, J. [Institute of Plasma Physics ASCR, Prague (Czech Republic); Héron, A. [CPHT, CNRS (UMR 7644), Ecole Polytechnique, Route de Saclay, 91128 Palaiseau (France); Honoré, C.; Grésillon, D. [LPP, CNRS (UMR 7648), Ecole Polytechnique-Univ. Paris-Sud-UPMC Univ. Paris 06, Route de Saclay, 91128 Palaiseau (France); Lemoine, N.; Coulette, D. [IJL, CNRS (UMR 7198), Université de Lorraine, BP 70239, 54506 Vandoeuvre-lès-Nancy (France)

    2014-07-15T23:59:59.000Z

    Collective Thomson scattering experiments reveal the presence of high-frequency, axial electron density fluctuations at millimetric wavelengths in the Hall thruster plasma. The properties of these fluctuations are investigated experimentally and via linear kinetic theory. The relative drift of electrons and ions in the axial direction is found to be insufficient to cause excitation of the observed mode. Instead, the mode is determined to be a two-stream instability arising due to the velocity difference between singly and doubly charged ion populations in the plume.

  13. OpenEI Town Hall Meeting #4 | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluatingGroup |JilinLuOpenNorthOlympia Green FuelsperCivicVersion 2OpenEI Town Hall

  14. Town Hall Meeting July 23th, 2012 | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f <MaintainedInformationThePtyTown Hall Meeting July 23th, 2012 Home

  15. Town Hall Meeting July 9th, 2012 | OpenEI Community

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f <MaintainedInformationThePtyTown Hall Meeting July 23th, 2012

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

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:Ezfeedflag JumpID-f <MaintainedInformationThePtyTown Hall Meeting July 23th,

  17. Mesoscopic spin Hall effect in multiprobe ballistic spin-orbit-coupled semiconductor bridges Branislav K. Nikoli, Liviu P. Zrbo, and Satofumi Souma

    E-Print Network [OSTI]

    Nikolic, Branislav K.

    Mesoscopic spin Hall effect in multiprobe ballistic spin-orbit-coupled semiconductor bridges attached to ballistic quantum-coherent two-dimensional electron gas 2DEG in semiconductor heterostructure current are signatures of the spin Hall effect in four-probe Rashba spin-split semiconductor

  18. E.-H. HALL. 2014 On the rotational Coefficient in nickel and cobalt ( Coefficients de rotation du nickel et du cobalt); Philosophical Magazine, 5e srie, t. XII.

    E-Print Network [OSTI]

    Boyer, Edmond

    509 E.-H. HALL. 2014 On the « rotational Coefficient in nickel and cobalt » ( Coefficients de rotation du nickel et du cobalt); Philosophical Magazine, 5e série, t. XII. p. 157; 1881. E.-H. HALL. 2014 pour le fer, le nickel, l'argent, l'or, le cobalt, l'aluminium, le magnésium; l'effet est bien moindre

  19. Graduate Student, Department of Civil, Structural and Environmental Engineering, 212 Ketter Hall, State University of New York at Buffalo, Buffalo, NY 14260.

    E-Print Network [OSTI]

    Bruneau, Michel

    1 Graduate Student, Department of Civil, Structural and Environmental Engineering, 212 Ketter Hall of Civil, Structural and Environmental Engineering, 130 Ketter Hall, State University of New York to enhance structural performance by reducing seismically induced structural damage. In this paper metallic

  20. Spin Hall and spin-diagonal conductivity in the presence of Rashba and Dresselhaus spin-orbit coupling 

    E-Print Network [OSTI]

    Sinitsyn, NA; Hankiewicz, EM; Teizer, Winfried; Sinova, Jairo.

    2004-01-01T23:59:59.000Z

    new avenues in spintronics research and transport phenomena which may meet the first challenge. The intrinsic spin-Hall effect consists of a dissipationless spin-current contribution generated perpendicular to the driv- ing electric field whenever... that the dc z-component spin-current Hall response to a driv- ing internal electric field, jsz=sxyspinEy, in the clean limit has a universal value whenever the two Rashba split bands are occupied (the usual case), sxyspin=e /8p, and vanishes linearly...

  1. Effect of the magnetic lenses on the electron current due to near wall conductivity in a Hall thruster

    SciTech Connect (OSTI)

    Wu Zhiwen; Liu Xiangyang; Wang Ningfei [School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081 (China); Yu Daren [Harbin Plasma Propulsion Lab, Mail Box 458, Harbin Institute of Technology, Harbin 150001 (China)

    2010-07-15T23:59:59.000Z

    The effect of magnetic lens on the electron current due to near wall conductivity (NWC) in a Hall thruster is studied. A Monte Carlo model is employed to simulate the effect of the large magnetic field incidence angle on the electron current. The simulation results show that the electron current due to NWC decreases in the case of large incidence. The simulation qualitatively agrees with the related experimental result. And the simulation also demonstrates that choosing the curvature angle of the magnetic field is also a key factor to design a Hall thruster with high operation performance.

  2. Alumni & Development Office, Trinity Hall, Trinity Lane, Cambridge, CB2 1TJ | Tel: +44 (0)1223 765265 Fax: +44 (0) 1223 765157 | www.trinhall.cam.ac.uk | merchandise@trinhall.cam.ac.uk | Registered Charity number: 1137458

    E-Print Network [OSTI]

    Lasenby, Joan

    Alumni & Development Office, Trinity Hall, Trinity Lane, Cambridge, CB2 1TJ | Tel: +44 (0 Charity number: 1137458 TRINITY HALL MERCHANDISE ORDER FORM FOR PRINTS OF DRAWINGS BY COLIN HAYES (TH prints of the entire collection of Colin Hayes' series of sepia pen and wash drawings, Trinity Hall

  3. 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.

    2014-12-01T23:59:59.000Z

    Optical and Hall-effect measurements have been performed on single crystals of Pb?.??Sn?.??Se, 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. Density function theory calculation for the electronic band structure also make similar predictions.« less

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

    SciTech Connect (OSTI)

    Karman, Nathan

    2012-11-29T23:59:59.000Z

    The Forest County Potawatomi Community (â??FCPCâ? or â??Communityâ?) implemented energy efficiency improvements to revitalize Wundar Hall, a 34,000 square foot (â??SFâ?) 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 â??Concordia Trust Propertyâ?). As part of this project, which was conducted with assistance from the Department of Energyâ??s Tribal Energy Program (â??TEPâ?), 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 buildingâ??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 â??Catalytic Projectâ? for revitalizing the near west side. The Tribe envisions a revitalized, mixed-use campus of community services, education, and economic developmentâ??providing services to the Indian community and jobs to the neighborhood.

  5. 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.

    2013-06-01T23:59:59.000Z

    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.

  6. Higher Dimensional Quantum Hall Effect as A-Class Topological Insulator

    E-Print Network [OSTI]

    Kazuki Hasebe

    2014-08-02T23:59:59.000Z

    We perform a detail study of higher dimensional quantum Hall effects and A-class topological insulators with emphasis on their relations to non-commutative geometry. There are two different formulations of non-commutative geometry for higher dimensional fuzzy spheres; the ordinary commutator formulation and quantum Nambu bracket formulation. Corresponding to these formulations, we introduce two kinds of monopole gauge fields; non-abelian gauge field and antisymmetric tensor gauge field, which respectively realize the non-commutative geometry of fuzzy sphere in the lowest Landau level. We establish connection between the two types of monopole gauge fields through Chern-Simons term, and derive explicit form of tensor monopole gauge fields with higher string-like singularity. The connection between two types of monopole is applied to generalize the concept of flux attachment in quantum Hall effect to A-class topological insulator. We propose tensor type Chern-Simons theory as the effective field theory for membranes in A-class topological insulators. Membranes turn out to be fractionally charged objects and the phase entanglement mediated by tensor gauge field transforms the membrane statistics to be anyonic. The index theorem supports the dimensional hierarchy of A-class topological insulator. Analogies to D-brane physics of string theory are discussed too.

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

    SciTech Connect (OSTI)

    Kim, Sang-Il; Seo, Min-Su; Park, Seung-young, E-mail: parksy@kbsi.re.kr [Division of Materials Science, Korea Basic Science Institute, Daejeon 305-806 (Korea, Republic of)

    2014-05-07T23:59:59.000Z

    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.

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

    SciTech Connect (OSTI)

    Anand, Naween [Univ. of Florida, Gainesville, FL (United States); Gu, Genda [Brookhaven National Lab. (BNL), Upton, NY (United States); Buvaev, Sanal [Univ. of Florida, Gainesville, FL (United States); Hebard, A. F. [Univ. of Florida, Gainesville, FL (United States); Tanner, D. B. [Univ. of Florida, Gainesville, FL (United States); Chen, Zhiguo [Florida State Univ., Tallahassee, FL (United States); Li, Zhiqiang [Florida State Univ., Tallahassee, FL (United States); Choudhary, Kamal [Univ. of Florida, Gainesville, FL (United States); Sinnott, S. B. [Univ. of Florida, Gainesville, FL (United States); Martin, C. [Ramapo College, Mahwah, NJ (United States)

    2014-12-01T23:59:59.000Z

    Optical and Hall-effect measurements have been performed on single crystals of Pb?.??Sn?.??Se, 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 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.

  9. Scanning Hall Probe Microscopy of Magnetic Vortices inVery Underdoped yttrium-barium-copper-oxide

    SciTech Connect (OSTI)

    Guikema, Janice Wynn; /SLAC, SSRL

    2005-12-02T23:59:59.000Z

    Since their discovery by Bednorz and Mueller (1986), high-temperature cuprate superconductors have been the subject of intense experimental research and theoretical work. Despite this large-scale effort, agreement on the mechanism of high-T{sub c} has not been reached. Many theories make their strongest predictions for underdoped superconductors with very low superfluid density n{sub s}/m*. For this dissertation I implemented a scanning Hall probe microscope and used it to study magnetic vortices in newly available single crystals of very underdoped YBa{sub 2}Cu{sub 3}O{sub 6+x} (Liang et al. 1998, 2002). These studies have disproved a promising theory of spin-charge separation, measured the apparent vortex size (an upper bound on the penetration depth {lambda}{sub ab}), and revealed an intriguing phenomenon of ''split'' vortices. Scanning Hall probe microscopy is a non-invasive and direct method for magnetic field imaging. It is one of the few techniques capable of submicron spatial resolution coupled with sub-{Phi}{sub 0} (flux quantum) sensitivity, and it operates over a wide temperature range. Chapter 2 introduces the variable temperature scanning microscope and discusses the scanning Hall probe set-up and scanner characterizations. Chapter 3 details my fabrication of submicron GaAs/AlGaAs Hall probes and discusses noise studies for a range of probe sizes, which suggest that sub-100 nm probes could be made without compromising flux sensitivity. The subsequent chapters detail scanning Hall probe (and SQUID) microscopy studies of very underdoped YBa{sub 2}Cu{sub 3}O{sub 6+x} crystals with T{sub c} {le} 15 K. Chapter 4 describes two experimental tests for visons, essential excitations of a spin-charge separation theory proposed by Senthil and Fisher (2000, 2001b). We searched for predicted hc/e vortices (Wynn et al. 2001) and a vortex memory effect (Bonn et al. 2001) with null results, placing upper bounds on the vison energy inconsistent with the theory. Chapter 5 discusses imaging of isolated vortices as a function of T{sub c}. Vortex images were fit with theoretical magnetic field profiles in order to extract the apparent vortex size. The data for the lowest T{sub c}'s (5 and 6.5 K) show some inhomogeneity and suggest that {lambda}{sub ab} might be larger than predicted by the T{sub c} {proportional_to} n{sub s}(0)/m* relation first suggested by results of Uemura et al. (1989) for underdoped cuprates. Finally, Chapter 6 examines observations of apparent ''partial vortices'' in the crystals. My studies of these features indicate that they are likely split pancake vortex stacks. Qualitatively, these split stacks reveal information about pinning and anisotropy in the samples. Collectively these magnetic imaging studies deepen our knowledge of cuprate superconductivity, especially in the important regime of low superfluid density.

  10. 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...

  11. CE/EE/ME 263: Multivariable Control Instructor: Henri Gavin, 122 Hudson Hall, henri.gavin@duke.edu

    E-Print Network [OSTI]

    Gavin, Henri

    -Wesley, 1991. [5] J.B. Burl, Linear Optimal Control: H2 and H Methods, Longman, 1998 [6] C-T Chen, Introduction] B.D.O. Anderson and J.B. Moore, Optimal Control: Linear Quadratic Methods, Prentice-Hall, 1990. [2] H. Kwakernaak and R. Sivan, Linear Optimal Control Systems, John Wiley & Sons, 1972. [16] B.P. Lathi

  12. Policy on Building use during Ventilation Outage: School of Science Roger Bacon Hall and Morrell Science Center

    E-Print Network [OSTI]

    Policy on Building use during Ventilation Outage: School of Science Roger Bacon Hall and Morrell) are present. For this reason, the School of Science has a special policy for times when building ventilation is not functioning as designed. A common cause of inadequate building ventilation is a power outage. Laboratory

  13. The fractional quantum Hall effect is a notable example of emergent behavior in which strong Coulomb interactions drive

    E-Print Network [OSTI]

    Weston, Ken

    Coulomb interactions drive the existence of a correlated many-body state. Bilayer graphene represents distinct two-valued quantum numbers: layer index, electron spin, and the sublattice index of the graphene observation of fractional quantum Hall states in bilayer graphene. By placing bilayer graphene (blue in Fig. 1

  14. arXiv:0906.4351v1[cond-mat.mes-hall]23Jun2009 Interfaces Within Graphene Nanoribbons

    E-Print Network [OSTI]

    Yanikoglu, Berrin

    arXiv:0906.4351v1[cond-mat.mes-hall]23Jun2009 Interfaces Within Graphene Nanoribbons J Wurm1,2 , M the conductance through two types of graphene nanostructures: nanoribbon junctions in which the width changes from that experience from electron gas waveguides does not carry over to graphene nanostructures. The interior

  15. Department of Agricultural Education and Communication 305 Rolfs Hall Institute of Food and Agricultural Sciences (IFAS) PO Box 110540

    E-Print Network [OSTI]

    Watson, Craig A.

    Department of Agricultural Education and Communication 305 Rolfs Hall Institute of Food and Agricultural Sciences (IFAS) PO Box 110540 Gainesville, FL 32611-0540 Tel: (352) 392-0502 Fax: (352) 392/OUTREACH Location: DEPARTMENT OF AGRICULTURAL EDUCATION AND COMMUNICATION UNIVERSITY OF FLORIDA INSTITUTE OF FOOD

  16. Economics OFFICE: Nasatir Hall 305 In the College of Arts and Letters TELEPHONE: (619) 594-1675

    E-Print Network [OSTI]

    Gallo, Linda C.

    192 Economics OFFICE: Nasatir Hall 305 In the College of Arts and Letters TELEPHONE: (619) 594 of Arts degree in economics. Major in economics with the B.A. degree in liberal arts and sciences. Emphasis in international economics. Emphasis in preprofessional studies. Minor in economics. The Major

  17. Police Department Organizational Chart Green Hall 750 S. Meridian Avenue 6023 Campus Delivery Fort Collins, CO 80523-6023

    E-Print Network [OSTI]

    Police Department ­ Organizational Chart Green Hall 750 S. Meridian Avenue 6023 Campus DeliveryClure Dispatcher Police Comm. Tech R. Trask CHAIN OF COMMAND AND ORGANIZATIONAL RESPONSIBILITY Each employee is directly responsible to his or her immediate supervisor as delineated in the organizational chart Officers

  18. Detection and quantification of inverse spin Hall effect from spin pumping in permalloy/normal metal bilayers.

    SciTech Connect (OSTI)

    Mosendz, O.; Vlaminck, V.; Pearson, J. E.; Fradin, F. Y.; Bauer, G. E. W.; Bader, S. D.; Hoffmann, A.; Delft Univ. of Technology

    2010-12-01T23:59:59.000Z

    Spin pumping is a mechanism that generates spin currents from ferromagnetic resonance over macroscopic interfacial areas, thereby enabling sensitive detection of the inverse spin Hall effect that transforms spin into charge currents in nonmagnetic conductors. Here we study the spin-pumping-induced voltages due to the inverse spin Hall effect in permalloy/normal metal bilayers integrated into coplanar waveguides for different normal metals and as a function of angle of the applied magnetic field direction, as well as microwave frequency and power. We find good agreement between experimental data and a theoretical model that includes contributions from anisotropic magnetoresistance and inverse spin Hall effect. The analysis provides consistent results over a wide range of experimental conditions as long as the precise magnetization trajectory is taken into account. The spin Hall angles for Pt, Pd, Au, and Mo were determined with high precision to be 0.013 {+-} 0.002, 0.0064 {+-} 0.001, 0.0035 {+-} 0.0003, and -0.0005 {+-} 0.0001, respectively.

  19. The Public Hall of Residence is located in Ferrol town centre, at Magdalena district to be precise. It is easily

    E-Print Network [OSTI]

    Fraguela, Basilio B.

    The Public Hall of Residence is located in Ferrol town centre, at Magdalena district to be precise. It is easily accesible to both Esteiro and Serantes campuses. The Magdalena district is an example of rational. This district preserves eighteenthcentury houses, with wrought iron balconies on stone corbels and glazed white

  20. Spring 1999 Syllabus for PHYS 320: Modern Physics Dr. Alison Baski, Oliver Hall North-Room 2017

    E-Print Network [OSTI]

    Baski, Alison

    Spring 1999 Syllabus for PHYS 320: Modern Physics Instructor Dr. Alison Baski, Oliver Hall North/ Office Hours: Mon 1-3 pm or by appointment (Rm 2017) OPTIONAL Textbook Modern Physics for Scientists be useful to read : 1-10, 12-14, 16, 17. Note: ANY modern physics book will have sections on material

  1. ECE DEPARTMENT TOWER Through the team effort of Professor's Michael Carter and Richard Messner, Kingsbury Hall has

    E-Print Network [OSTI]

    New Hampshire, University of

    ECE DEPARTMENT TOWER Through the team effort of Professor's Michael Carter and Richard Messner, Kingsbury Hall has sprouted a new 70 foot antenna tower this summer, which will expand the capabilities laboratory exercises in software-defined radio, the new tower will host an experimental MIMO cellular base

  2. Local far-infrared spectroscopy of edge states in the quantum Hall regime A. Lorke* and J. P. Kotthaus

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    resolution well below typical Hall bar dimensions,7,8 the other is the use of the edge channels them- selves are as follows: Buffer and smoothing layers, 1 m GaAs, a 15-nm AlxGa1 xAs (x 0.3) spacer layer, 3.9 1012 - cm 2

  3. Cornell's Ranger robot navigated 108.5 times around the Barton Hall indoor track, about 212 meters pe Entertainment

    E-Print Network [OSTI]

    Ruina, Andy L.

    . Unlike other walking robots that use motors to control every movement, the Ranger appears more relaxed could be applied to rehabilitation, prostheses for humans and improving athletic performance. New 6Cornell's Ranger robot navigated 108.5 times around the Barton Hall indoor track, about 212 meters

  4. The design and performance of the electromagnetic calorimeters in Hall C at Jefferson Lab

    SciTech Connect (OSTI)

    Vardan Tadevosyan, Hamlet Mkrtchyan, Arshak Asaturyan, Arthur Mkrtchyan, Simon Zhamkochyan

    2012-12-01T23:59:59.000Z

    The design and performance of the electromagnetic calorimeters in the magnetic spectrometers in Hall C at Jefferson Lab are presented. For the existing HMS and SOS spectrometers, construction information and comparisons of simulated and experimental results are presented. The design and simulated performance for a new calorimeter to be used in the new SHMS spectrometer is also presented. We have developed and constructed electromagnetic calorimeters from TF-1 type lead-glass blocks for the HMS and SOS magnetic spectrometers at JLab Hall C. The HMS/SOS calorimeters are of identical design and construction except for their total size. Blocks of dimension 10 cm × 10 cm × 70 cm are arranged in four planes and stacked 13 and 11 blocks high in the HMS and SOS respectively. The energy resolution of these calorimeters is better than 6%/?E, and pion/electron (?/e) separation of about 100:1 has been achieved in energy range 1–5 GeV. Good agreement has been observed between the experimental and GEANT4 simulated energy resolutions. The HMS/SOS calorimeters have been used nearly in all Hall C experiments, providing good energy resolution and a high pion suppression factor. No significant deterioration in their performance has been observed in the course of use since 1994. For the SHMS spectrometer, presently under construction, details on the calorimeter design and accompanying GEANT4 simulation efforts are given. A Preshower+Shower design was selected as the most cost-effective among several design choices. The preshower will consist of a layer of 28 modules with TF-1 type lead glass radiators, stacked in two columns. The shower part will consist of 224 modules with F-101 type lead glass radiators, stacked in a “fly's eye” configuration of 14 columns and 16 rows. The active area of 120 × 130 cm(2) will encompass the beam envelope at the calorimeter. The anticipated performance of the new calorimeter is simulated over the full momentum range of the SHMS, predicting resolution and yields similar to the HMS calorimeter. Good electron/hadron separation can be achieved by using energy deposition in the Preshower along with total energy deposition in the calorimeter. In this case the PID capability is similar to or better than that attainable with HMS calorimeter, with a pion suppression factor of a few hundreds predicted for 99% electron detection efficiency.

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

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

    Claassen, Martin [SLAC National Accelerator Lab., Menlo Park, CA (United States); Lee, Ching-Hua [Stanford Univ., CA (United States); Thomale, Ronny [Univ. of Wurzburg (Germany); Qi, Xiao-Liang [Stanford Univ., CA (United States); Devereaux, Thomas P [SLAC National Accelerator Lab., Menlo Park, CA (United States)

    2015-06-01T23:59:59.000Z

    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 duals 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.

  6. Color Glass Condensates in dense quark matter and quantum Hall states of gluons

    E-Print Network [OSTI]

    Aiichi Iwazaki

    2006-04-26T23:59:59.000Z

    We apply the effective theory of color glass condensate to the analysis of gluon states in dense quark matter, in which the saturation region of gluons is also present. We find that in the region two point function of gluons shows algebraic long range order. The order is completely the same as the one gluons show in the dense quark matter, which form quantum Hall states. The order leads to the vanishing of massless gluon pole. We also find that the saturation region of gluons extends from small $x$ to even large $x\\lesssim 1$ in much dense quark matter. We point out a universality that the color glass condensate is a property of hadrons at high energy and of quark matter at high baryon density.

  7. Visualizing edge states with an atomic Bose gas in the quantum Hall regime

    E-Print Network [OSTI]

    Stuhl, B K; Aycock, L M; Genkina, D; Spielman, I B

    2015-01-01T23:59:59.000Z

    We engineered a two-dimensional magnetic lattice in an elongated strip geometry, with effective per-plaquette flux ~4/3 times the flux quanta. We imaged the localized edge and bulk states of atomic Bose-Einstein condensates in this strip, with single lattice-site resolution along the narrow direction. Further, we observed both the skipping orbits of excited atoms traveling down our system's edges, analogues to edge magnetoplasmons in 2-D electron systems, and a dynamical Hall effect for bulk excitations. Our lattice's long direction consisted of the sites of an optical lattice and its narrow direction consisted of the internal atomic spin states. Our technique has minimal heating, a feature that will be important for spectroscopic measurements of the Hofstadter butterfly and realizations of Laughlin's charge pump.

  8. Dynamics in the quantum Hall effect and the phase diagram of graphene

    E-Print Network [OSTI]

    E. V. Gorbar; V. P. Gusynin; V. A. Miransky; I. A. Shovkovy

    2008-08-28T23:59:59.000Z

    The dynamics responsible for lifting the degeneracy of the Landau levels in the quantum Hall (QH) effect in graphene is studied by utilizing a low-energy effective model with a contact interaction. A detailed analysis of the solutions of the gap equation for Dirac quasiparticles is performed at both zero and nonzero temperatures. The characteristic feature of the solutions is that the order parameters connected with the QH ferromagnetism and magnetic catalysis scenarios necessarily coexist. The solutions reproduce correctly the experimentally observed novel QH plateaus in graphene in strong magnetic fields. The phase diagram of this system in the plane of temperature and electron chemical potential is analyzed. The phase transitions corresponding to the transitions between different QH plateaus in graphene are described.

  9. Visualizing edge states with an atomic Bose gas in the quantum Hall regime

    E-Print Network [OSTI]

    B. K. Stuhl; H. -I Lu; L. M. Aycock; D. Genkina; I. B. Spielman

    2015-02-09T23:59:59.000Z

    We engineered a two-dimensional magnetic lattice in an elongated strip geometry, with effective per-plaquette flux ~4/3 times the flux quanta. We imaged the localized edge and bulk states of atomic Bose-Einstein condensates in this strip, with single lattice-site resolution along the narrow direction. Further, we observed both the skipping orbits of excited atoms traveling down our system's edges, analogues to edge magnetoplasmons in 2-D electron systems, and a dynamical Hall effect for bulk excitations. Our lattice's long direction consisted of the sites of an optical lattice and its narrow direction consisted of the internal atomic spin states. Our technique has minimal heating, a feature that will be important for spectroscopic measurements of the Hofstadter butterfly and realizations of Laughlin's charge pump.

  10. Understanding Pound-Drever-Hall locking using voltage controlled radio-frequency oscillators: An undergraduate experiment

    E-Print Network [OSTI]

    Liekhus-Schmaltz, C E

    2011-01-01T23:59:59.000Z

    A senior undergraduate experiment has been developed for learning about frequency stabilization techniques using radio-frequency electronics. The primary objective is to frequency stabilize a voltage controlled oscillator to a cavity resonance at 800 MHz using the Pound-Drever-Hall scheme. This technique is commonly applied to stabilize lasers at optical frequencies, but by using radio-frequency equipment exclusively it is possible to systematically study various aspects of the technique more thoroughly, inexpensively, and free from eye hazards. Students also learn about modular radio-frequency electronics and basic feedback control loops. By varying the temperature of the resonator, the students may determine the thermal expansion coefficients of copper, aluminum, and super invar.

  11. Observation of chiral edge states with neutral fermions in synthetic Hall ribbons

    E-Print Network [OSTI]

    Mancini, M; Cappellini, G; Livi, L; Rider, M; Catani, J; Sias, C; Zoller, P; Inguscio, M; Dalmonte, M; Fallani, L

    2015-01-01T23:59:59.000Z

    Chiral edge states are a hallmark of quantum Hall physics. In electronic systems, they appear as a macroscopic consequence of the cyclotron orbits induced by a magnetic field, which are naturally truncated at the physical boundary of the sample. Here we report on the experimental realization of chiral edge states in a ribbon geometry with an ultracold gas of neutral fermions subjected to an artificial gauge field. By imaging individual sites along a synthetic dimension, we detect the existence of the edge states, investigate the onset of chirality as a function of the bulk-edge coupling, and observe the edge-cyclotron orbits induced during a quench dynamics. The realization of fermionic chiral edge states is a fundamental achievement, which opens the door towards experiments including edge state interferometry and the study of non-Abelian anyons in atomic systems.

  12. Effect of the annular region on the performance of a cylindrical Hall plasma thruster

    SciTech Connect (OSTI)

    Seo, Mihui; Lee, Jongsub; Choe, Wonho [Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701 (Korea, Republic of); Seon, Jongho [School of Space Research, Kyung Hee University, 1732 Deokyoungdaero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701 (Korea, Republic of); June Lee, Hae [Department of Electrical Engineering, Pusan National University, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 609-735 (Korea, Republic of)

    2013-02-15T23:59:59.000Z

    Performance characteristics of a cylindrical Hall thruster depending on the depth of the annular region (L{sub a}) in front of the anode were investigated. The effect of the annular region was examined by operating thrusters corresponding to four different values of L{sub a} (0, 4, 6, and 10 mm) and a fixed length of the cylindrical region (25 mm). Various measurements such as electron and ion currents, thrust, anode efficiency, current and propellant utilizations, and ion energy distribution functions were performed. Such measurements lead to an interpretation that (1) a considerable potential difference may exist between the anode and the ionization region, which is presumably located near the end of the annular region where magnetic field lines converge; (2) this potential difference increases with respect to increasing L{sub a}; and (3) the presence of the annular region near the anode reduces the specific impulse and anode efficiency for the examined thrusters.

  13. Observation of chiral edge states with neutral fermions in synthetic Hall ribbons

    E-Print Network [OSTI]

    M. Mancini; G. Pagano; G. Cappellini; L. Livi; M. Rider; J. Catani; C. Sias; P. Zoller; M. Inguscio; M. Dalmonte; L. Fallani

    2015-02-09T23:59:59.000Z

    Chiral edge states are a hallmark of quantum Hall physics. In electronic systems, they appear as a macroscopic consequence of the cyclotron orbits induced by a magnetic field, which are naturally truncated at the physical boundary of the sample. Here we report on the experimental realization of chiral edge states in a ribbon geometry with an ultracold gas of neutral fermions subjected to an artificial gauge field. By imaging individual sites along a synthetic dimension, we detect the existence of the edge states, investigate the onset of chirality as a function of the bulk-edge coupling, and observe the edge-cyclotron orbits induced during a quench dynamics. The realization of fermionic chiral edge states is a fundamental achievement, which opens the door towards experiments including edge state interferometry and the study of non-Abelian anyons in atomic systems.

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

    SciTech Connect (OSTI)

    Malek Mazouz

    2006-12-08T23:59:59.000Z

    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.

  15. Effects of magnetic field strength on the low frequency oscillation in Hall thrusters

    SciTech Connect (OSTI)

    Wang Chunsheng; Wei Liqiu; Ning Zhongxi; Yu Daren [Laboratory of Plasma Propulsion, Mail Box 458, Harbin Institute of Technology, Harbin 150001 (China)

    2011-01-15T23:59:59.000Z

    In order to study the effect of magnetic field strength on low frequency oscillation in Hall thrusters, experiments were carried out with different operating parameters. Experimental results show that the effect of magnetic field strength on the low frequency oscillation changes with operating parameters. In the decline zone of magnetoampere characteristic curve, low frequency oscillation increases with the increase of magnetic field strength at low mass flow rate, while decreases with the increase of magnetic field strength at high mass flow rate. With further experiments and numerical simulations, it is found that the change of electron current at low mass flow rate and the change of ion current at high mass flow rate account for the variations of low frequency oscillation. Finally, the physical analysis is performed.

  16. Refurbishment and Testing of the 1970's Era LASS Solenoid Coils for JLab's Hall D

    SciTech Connect (OSTI)

    Anumagalla, Ravi; Biallas, George; Brindza, Paul; Carstens, Thomas; Creel, Jonathan; Egiyan, Hovanes; Martin, Floyd; Qiang, Yi; Spiegel, Scot; Stevens, Mark; Wissmann, Mark

    2012-07-01T23:59:59.000Z

    JLab refurbished the LASS1, 1.85 m bore Solenoid, consisting of four superconducting coils to act as the principal analysis magnet for nuclear physics in the newly constructed, Hall D at Jefferson Lab. The coils, built in 1971 at Stanford Linier Accelerator Center and used a second time at the MEGA Experiment at Los Alamos, had electrical shorts and leaks to the insulating vacuum along with deteriorated superinsulation & instrumentation. Root cause diagnosis of the problems and the repair methods are described along with the measures used to qualify the vessels and piping within the Laboratory's Pressure Safety Program (mandated by 10CFR851). The extraordinary refrigerator operational methods used to utilize the obsolete cryogenic apparatus gathered for the off-line, single coil tests are described.

  17. M-Theory Brane as Giant Graviton and the Fractional Quantum Hall Effect

    E-Print Network [OSTI]

    Ran Huo

    2006-07-30T23:59:59.000Z

    A small number of M-theory branes as giant gravitons in the M-theory sector of LLM geometry is studied as a probe. The abelian way shows that the low energy effective action for M-theory brane is exactly the 2d electron subject to a vertical magnetic field. We also briefly discuss the microscopic description of M2-brane giant graviton in this geometry, in the language of a combination of D0-branes as fuzzy 2-spheres. Then we go to the well-established Noncommutative Chern-Simons theory description. After quantization, well behaved Fractional Quantum Hall Effect is demonstrated. This goes beyond the original LLM description and should be some indication of novel geometry.

  18. 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

    2014-05-13T23:59:59.000Z

    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.

  19. Inverted end-Hall-type low-energy high-current gaseous ion source

    SciTech Connect (OSTI)

    Oks, E. M.; Vizir, A. V.; Shandrikov, M. V.; Yushkov, G. Yu.; Grishin, D. M.; Anders, A.; Baldwin, D. A. [High Current Electronics Institute, Russian Academy of Sciences, Tomsk 634055 (Russian Federation); Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States); 4Wave, Inc., Sterling, Virginia 20166 (United States)

    2008-02-15T23:59:59.000Z

    A novel approach to low-energy, high-current, gaseous ion beam generation was explored and an ion source based on this technique has been developed. The source utilizes a dc high-current (up to 20 A) gaseous discharge with electron injection into the region of ion generation. Compared to the conventional end-Hall ion source, the locations of the discharge anode and cathode are inverted: the cathode is placed inside the source and the anode outside, and correspondingly, the discharge current is in the opposite direction. The discharge operates in a diverging axial magnetic field, similar to the end-Hall source. Electron generation and injection is accomplished by using an additional arc discharge with a ''cold'' (filamentless) hollow cathode. Low plasma contamination is achieved by using a low discharge voltage (avoidance of sputtering), as well as by a special geometric configuration of the emitter discharge electrodes, thereby filtering (removing) the erosion products stemming from the emitter cathode. The device produces a dc ion flow with energy below 20 eV and current up to 2.5 A onto a collector of 500 cm{sup 2} at 25 cm from the source edge, at a pressure {>=}0.02 Pa and gas flow rate {>=}14 SCCM. The ion energy spread is 2 to 3 eV (rms). The source is characterized by high reliability, low maintenance, and long lifetime. The beam contains less than 0.1% of metallic ions. The specific electric energy consumption is 400 eV per ion registered at the collector. The source operates with noble gases, nitrogen, oxygen, and hydrocarbons. Utilizing biasing, it can be used for plasma sputtering, etching, and other ion technologies.

  20. Eigen Lecture Hall, MPIbpc, Am Fassberg 11 Dec 5-6 , 2014, Gttingen, GermanyDec 5-6 , 2014, Gttingen, Germany

    E-Print Network [OSTI]

    Gollisch, Tim

    Eigen Lecture Hall, MPIbpc, Am Fassberg 11 Dec 5-6 , 2014, Göttingen, GermanyDec 5-6 , 2014, Göttingen, Germany Membrane Biophysics Symposium Organizers: Stefan Hell, Tobias Moser, Walter Stühmer

  1. INTERNATIONAL SERVICES OFFICE UNIVERSITY OF ROCHESTER 213 Morey Hall, Box 270446, Rochester, NY 14627 Phone: (585) 275-2866 Fax: (585) 276-2943

    E-Print Network [OSTI]

    Mahon, Bradford Z.

    to your University funding, certification from your academic program is required, by signature below: $ Funding Sources University Funding (signature required): Non-University Funding Scholarship: $ PersonalINTERNATIONAL SERVICES OFFICE UNIVERSITY OF ROCHESTER 213 Morey Hall, Box 270446, Rochester, NY

  2. The art of cross-writing in Grove Hall : two centuries of form and place-making in a Boston neighborhood

    E-Print Network [OSTI]

    Rosenzweig, Gilad J

    2013-01-01T23:59:59.000Z

    The Boston neighborhood of Grove Hall is presently engaged in a period of urban revival. New civic, commercial and residential projects are starting to fill in empty lots and rejuvenate historic yet dilapidated structures. ...

  3. THE CHAPEL OF ST HUGH AND ST CHAD IN THE KING'S HALL AND COLLEGE OF BRASENOSE MUSIC LIST, TRINITY TERM 2013

    E-Print Network [OSTI]

    Oxford, University of

    THE CHAPEL OF ST HUGH AND ST CHAD IN THE KING'S HALL AND COLLEGE OF BRASENOSE MUSIC LIST, TRINITY Eucharist, 6pm Congregational Setting: Cullen Motet: Lead me, Lord - SS Wesley 6th Week - Trinity Sunday

  4. Experimental status DVCS e p ---> e p gamma and e n ---> e n gamma at Jefferson Lab-Hall A

    SciTech Connect (OSTI)

    C. Ferdi

    2004-06-02T23:59:59.000Z

    The experiments E00-110 and E03-106 [1] propose to measure the Deep Virtual Compton Scattering process (DVCS) ep --> ep{gamma} and en --> en{gamma} in Hall A at Jefferson Lab with a 5.75 GeV longitudinally polarized electron beam. The exclusivity requires the High Resolution Spectrometer of the Hall A for the detection of the scattered electron ({Delta}p/p = 10^-4), an electromagnetic calorimeter for the detection of the real photon ({sigma}/E<5%) and a scintillator array for the detection of the third particle. A 1 GHz sampling system allows one to deal with pile-up as expected from running detectors at small angles and high luminosity L = 10^37 cm^-2 s^-1. We will describe the apparatus and will explain the method to extract GPDs and evaluate the contributions from higher twists from the measurement of the cross-section difference.

  5. 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)

    2014-05-07T23:59:59.000Z

    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.

  6. Prediction of liquid metal alloy radiant properties from measurements of the Hall coefficient and the direct current resistivity

    SciTech Connect (OSTI)

    Havstad, M.A. [Lawrence Livermore National Lab., CA (United States); Qiu, T. [Massachusetts Institute of Technology, Cambridge, MA (United States)

    1995-04-01T23:59:59.000Z

    The thermal radiative properties of high temperature solid and liquid metal alloys are particularly useful to research and development efforts in laser cladding and machining, electron beam welding and laser isotope separation. However the cost, complexity, and difficulty of measuring these properties have forced the use of crude estimates from the Hagen-Rubens relation, the Drude relations, or extrapolation from low temperature or otherwise flawed data (e.g., oxidized). The authors have found in this work that published values for the Hall coefficient and the electrical resistivity of liquid metal alloys can provide useful estimates of the reflectance and emittance of some groups of binary liquid metal and high temperature solid alloys. The estimation method computes the Drude free electron parameters, and thence the optical constants and the radiant properties from the dependence of the Hall coefficient and direct current resistivity on alloy composition (the Hall coefficient gives the free electron density and the resistivity gives the average time between collisions). They find that predictions of the radiant properties of molten cerium-copper alloy, which use the measured variations in the Hall coefficient and resistivity (both highly nonlinear) as a function of alloy fraction (rather than linear combinations of the values of the pure elements) yield a good comparison to published measurements of the variation of the normal spectral emittance (a different but also nonlinear function) of cerium-copper alloy at the single wavelength available for comparison, 0.645 {mu}m. The success of the approach in the visible range is particularly notable because one expects a Drude based approach to improve with increasing wavelength from the visible into the infrared. Details of the estimation method, the comparison between the calculation and the measured emittance, and a discussion of what groups of elements may also provide agreement is given.

  7. Please return to 2258 Engineering Hall upon requesting a Ph.D. Preliminary Exam Warrant. PhD Minor Requirements

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    Please return to 2258 Engineering Hall upon requesting a Ph.D. Preliminary Exam Warrant. PhD Minor Requirements The purpose of a minor is to give breadth and depth to the PhD program beyond the major area A or Option B to satisfy the PhD minor requirements. A PhD minor proposal form may be obtained from the CEE

  8. Influence of magnetic field strength on potential well in the ionization stage of a double stage Hall thruster

    SciTech Connect (OSTI)

    Yu Daren; Song Maojiang; Liu Hui; Zhang Xu; Li Hong [Lab of Plasma Propulsion, Mail Box 458, Harbin Institute of Technology, Harbin 150001 (China)

    2012-07-15T23:59:59.000Z

    Similar to a single stage Hall thruster, the magnetic field, which controls electron trajectory and electric field distribution, is the most important factor determining the performance of a double stage Hall thruster. Especially, a potential well, which is helpful to reduce the ion loss on the thruster walls, is shaped in the ionization stage due to the existence of an annular magnetic field topology there. In this paper, the influence of magnetic field strength in the ionization stage on the potential well is researched with both experiments and particle-in-cell simulations. It is found that the depth of potential well increases with the magnetic field strength as a result of enhanced magnetic confinement and lowered electron conductivity. Consequently, the plasma density as well as the ion current entering the acceleration stage increases. However, an excessive magnetic field strength leads to an excess of ion loss on the walls of the acceleration stage. Therefore, there is an appropriate magnetic field strength in the ionization stage that results in a proper potential well and consequently an optimal performance of a double stage Hall thruster.

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

    SciTech Connect (OSTI)

    Alegria, L. D.; Petta, J. R. [Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States); Ji, H.; Cava, R. J. [Department of Chemistry, Princeton University, Princeton, New Jersey 08544 (United States); Yao, N. [Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, New Jersey 08544 (United States); Clarke, J. J. [Hitachi High Technologies America, Inc., Clarksburg, Maryland 20871 (United States)

    2014-08-04T23:59:59.000Z

    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.

  10. The lead-glass electromagnetic calorimeters for the magnetic spectrometers in Hall C at Jefferson Lab

    E-Print Network [OSTI]

    H. Mkrtchyan; R. Carlini; V. Tadevosyan; J. Arrington; A. Asaturyan; M. E. Christy; D. Dutta; R. Ent; H. C. Fenker; D. Gaskell; T. Horn; M. K. Jones; C. E. Keppel; D. J. Mack; S. P. Malace; A. Mkrtchyan; M. I. Niculescu; J. Seely; V. Tvaskis; S. A. Wood; S. Zhamkochyan

    2012-04-28T23:59:59.000Z

    The electromagnetic calorimeters of the various magnetic spectrometers in Hall C at Jefferson Lab are presented. For the existing HMS and SOS spectrometers design considerations, relevant construction information, and comparisons of simulated and experimental results are included. The energy resolution of the HMS and SOS calorimeters is better than $\\sigma/E \\sim 6%/\\sqrt E $, and pion/electron ($\\pi/e$) separation of about 100:1 has been achieved in energy range 1 -- 5 GeV. Good agreement has been observed between the experimental and simulated energy resolutions, but simulations systematically exceed experimentally determined $\\pi^-$ suppression factors by close to a factor of two. For the SHMS spectrometer presently under construction details on the design and accompanying GEANT4 simulation efforts are given. The anticipated performance of the new calorimeter is predicted over the full momentum range of the SHMS. Good electron/hadron separation is anticipated by combining the energy deposited in an initial (preshower) calorimeter layer with the total energy deposited in the calorimeter.

  11. Engineering of Quantum Hall Effect from Type IIA String Theory on The K3 Surface

    E-Print Network [OSTI]

    Adil Belhaj; Antonio Segui

    2010-07-02T23:59:59.000Z

    Using D-brane configurations on the K3 surface, we give six dimensional type IIA stringy realizations of the Quantum Hall Effect (QHE) in 1+2 dimensions. Based on the vertical and horizontal lines of the K3 Hodge diamond, we engineer two different stringy realizations. The vertical line presents a realization in terms of D2 and D6-branes wrapping the K3 surface. The horizontal one is associated with hierarchical stringy descriptions obtained from a quiver gauge theory living on a stack of D4-branes wrapping intersecting 2-spheres embedded in the K3 surface with deformed singularities. These geometries are classified by three kinds of the Kac-Moody algebras: ordinary, i.e finite dimensional, affine and indefinite. We find that no stringy QHE in 1+2 dimensions can occur in the quiver gauge theory living on intersecting 2-spheres arranged as affine Dynkin diagrams. Stringy realizations of QHE can be done only for the finite and indefinite geometries. In particular, the finite Lie algebras give models with fractional filling fractions, while the indefinite ones classify models with negative filling fractions which can be associated with the physics of holes in the graphene.

  12. Doppler Ghosts in a Hall of Mirrors: Polarisation Profiles of Scattered Emission Lines

    E-Print Network [OSTI]

    W. J. Henney

    1994-03-12T23:59:59.000Z

    The Doppler shifts of optical emission lines which have been scattered by surrounding dust and electrons can provide useful information about the kinematics, geometry and physical conditions of astrophysical flows. In principle, the scatterers can provide views of the line-emitting gas from different directions, allowing the 3-d velocity field of the emitting gas to be determined and revealing sources which are hidden from direct view. Unfortunately, as in a Hall of Mirrors, the resultant multiple images can be confusing and hard to interpret. In general, the scattering geometry will be unknown, which makes it difficult to disentangle the effect of the motion of the scatterers from that of the motion of the emitting source. In this situation, spectropolarimetric observations can be a great help, since the scattered light will be partially polarised to a degree dependent on the angle of scattering and on the details of the scattering process. Analysis of the polarisation profiles of the scattered emission lines can then determine the relative orientation and velocity of the source and the scatterers. Such techniques are applied to the upstream scattered emission lines in the HH 1 jet, where it is shown that spectropolarimetric measurements would allow an independent determination of the bowshock velocity with respect to the upstream matter, which would test ``multiple outburst'' models of the jet.

  13. A two-dimensional (azimuthal-axial) particle-in-cell model of a Hall thruster

    SciTech Connect (OSTI)

    Coche, P.; Garrigues, L., E-mail: laurent.garrigues@laplace.univ-tlse.fr [LAPLACE (Laboratoire Plasma et Conversion d'Energie), Université de Toulouse, UPS, INPT Toulouse 118, route de Narbonne, F-31062 Toulouse cedex 9 (France); CNRS, LAPLACE, F-31062 Toulouse (France)

    2014-02-15T23:59:59.000Z

    We have developed a two-dimensional Particle-In-Cell model in the azimuthal and axial directions of the Hall thruster. A scaling method that consists to work at a lower plasma density to overcome constraints on time-step and grid-spacing is used. Calculations are able to reproduce the breathing mode due to a periodic depletion of neutral atoms without the introduction of a supplementary anomalous mechanism, as in fluid and hybrid models. Results show that during the increase of the discharge current, an electron-cyclotron drift instability (frequency in the range of MHz and wave number on the order of 3000 rad s{sup ?1}) is formed in the region of the negative gradient of magnetic field. During the current decrease, an axial electric wave propagates from the channel toward the exhaust (whose frequency is on the order of 400?kHz) leading to a broadening of the ion energy distribution function. A discussion about the influence of the scaling method on the calculation results is also proposed.

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

    SciTech Connect (OSTI)

    Escobar, D. [Universidad Politécnica de Madrid, 28040 Madrid (Spain)] [Universidad Politécnica de Madrid, 28040 Madrid (Spain); Ahedo, E., E-mail: eduardo.ahedo@uc3m.es [Universidad Carlos III de Madrid, 28911 Leganés (Spain)

    2014-04-15T23:59:59.000Z

    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.

  15. Feedback Control Of An Azimuthal Oscillation In The ExB Discharge of Hall Thrusters

    SciTech Connect (OSTI)

    Griswold, Martin E.; Ellison, C. L.; Raitses, Y.; Fisch, N. J.

    2012-04-06T23:59:59.000Z

    Feedback control of a low-frequency azimuthal wave known as a "rotating spoke" in the ExB discharge of a cylindrical Hall thruster was demonstrated. The rotating spoke is an m=1 azimuthal variation in density, electron temperature, and potential that rotates at about 10% of the local E x B electron rotation speed. It causes increased electron transport across the magnetic field and is suspected to be an ionization wave. Feedback control of this wave required special consideration because, although it causes a rotating azimuthal variation in the current density to the anode, it does not show up as a signal in the total thruster discharge current. Therefore, an extra source of information was needed to track the oscillation, which was addressed by using a special anode that was split azimuthally into four segments. The current to each segment oscillates as the rotating spoke passes over it, and feedback is accomplished by resistors connected in series with each anode segment which cause the voltage on a segment to decrease in proportion to the current through that segment. The feedback resulted in the disappearance of a coherent azimuthal wave and a decrease in the time-averaged total discharge current by up to 13.2%.

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

    SciTech Connect (OSTI)

    Eric Fuchey

    2010-06-01T23:59:59.000Z

    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.

  17. On the R\\^ole of a Torsion-like Field in a Scenario for the Spin Hall Effect

    E-Print Network [OSTI]

    Godinho, C F L

    2014-01-01T23:59:59.000Z

    Starting from an action that describes a Dirac fermion, we propose and analyze a model based on a low-relativistic Pauli equation coupled to a torsion-like term to study Spin Hall Effect (SHE). We point out a very particular connection between the modified Pauli equation and the (SHE), where what we refer to torsion as field playing an important r\\^ole in the spin-orbit coupling process. In this scenario, we present a proposal of a spin-type current, considering the tiny contributions of torsion in connection with geometrical properties of the material.

  18. Time-domain detection of current controlled magnetization damping in Pt/Ni{sub 81}Fe{sub 19} bilayer and determination of Pt spin Hall angle

    SciTech Connect (OSTI)

    Ganguly, A.; Haldar, A.; Sinha, J.; Barman, A., E-mail: abarman@bose.res.in, E-mail: del.atkinson@durham.ac.uk [Thematic Unit of Excellence on Nanodevice Technology, Department of Condensed Matter Physics and Material Sciences, S. N. Bose National Centre for Basic Sciences, Kolkata 700098 (India); Rowan-Robinson, R. M.; Jaiswal, S.; Hindmarch, A. T.; Atkinson, D. A., E-mail: abarman@bose.res.in, E-mail: del.atkinson@durham.ac.uk [Department of Physics, Durham University, South Road, Durham DH1 3LE (United Kingdom)

    2014-09-15T23:59:59.000Z

    The effect of spin torque from the spin Hall effect in Pt/Ni{sub 81}Fe{sub 19} rectangular bilayer film was investigated using time-resolved magneto-optical Kerr microscopy. Current flow through the stack resulted in a linear variation of effective damping up to ±7%, attributed to spin current injection from the Pt into the Ni{sub 81}Fe{sub 19}. The spin Hall angle of Pt was estimated as 0.11?±?0.03. The modulation of the damping depended on the angle between the current and the bias magnetic field. These results demonstrate the importance of optical detection of precessional magnetization dynamics for studying spin transfer torque due to spin Hall effect.

  19. Spin current and inverse spin Hall effect in ferromagnetic metals probed by Y{sub 3}Fe{sub 5}O{sub 12}-based spin pumping

    SciTech Connect (OSTI)

    Wang, Hailong; Du, Chunhui; Chris Hammel, P., E-mail: hammel@physics.osu.edu; Yang, Fengyuan, E-mail: fyyang@physics.osu.edu [Department of Physics, The Ohio State University, Columbus, Ohio 43210 (United States)

    2014-05-19T23:59:59.000Z

    Using ferromagnetic (FM) resonance spin pumping, we observe injection of spin currents from Y{sub 3}Fe{sub 5}O{sub 12} (YIG) films to FM metals, including Ni{sub 81}Fe{sub 19} (Py), Fe, Co, and Ni, and detection of spin currents by inverse spin Hall effect (ISHE) in the FM metals. We obtain a high effective spin mixing conductance of 6.3?×?10{sup 18}?m{sup ?2} in a YIG/Cu/Py trilayer and a spin Hall angle of 0.020 for Py. The spin pumping signals in Fe, Co, and Ni confirm the mechanism of ISHE in FMs is the inverse process of the anomalous Hall effect.

  20. JOURNAL DE PHYSIQUE Colloque C 2, supplment au no2-3, Tome 29, Fvrier-Mars 1968,page C 2 -83 EFFET HALL DES LAMES MINCES DE NICKEL -PHOSPHORE

    E-Print Network [OSTI]

    Boyer, Edmond

    EFFET HALL DES LAMES MINCES DE NICKEL -PHOSPHORE Laboratoire de Physique de dépôts métalliques, 54-Nancy Résumé. -Nous avons étudié l'effet Hall des films minces de nickel-phosphore obtenus par oxydo nettement celui des ferromagnétiques. Notre étude a porté sur une centaine de lames minces de nickel

  1. The effect of inertia on the Dirac electron, the spin Hall current and the momentum space Berry curvature

    SciTech Connect (OSTI)

    Chowdhury, Debashree, E-mail: debashreephys@gmail.com; Basu, B., E-mail: sribbasu@gmail.com

    2013-02-15T23:59:59.000Z

    We have studied the spin dependent force and the associated momentum space Berry curvature in an accelerating system. The results are derived by taking into consideration the non-relativistic limit of a generally covariant Dirac equation with an electromagnetic field present, where the methodology of the Foldy-Wouthuysen transformation is applied to achieve the non-relativistic limit. Spin currents appear due to the combined action of the external electric field, the crystal field and the induced inertial electric field via the total effective spin-orbit interaction. In an accelerating frame, the crucial role of momentum space Berry curvature in the spin dynamics has also been addressed from the perspective of spin Hall conductivity. For time dependent acceleration, the expression for the spin polarization has been derived. - Highlights: Black-Right-Pointing-Pointer We study the effect of acceleration on the Dirac electron in the presence of an electromagnetic field, where the acceleration induces an electric field. Black-Right-Pointing-Pointer Spin currents appear due to the total effective electric field via the total spin-orbit interaction. Black-Right-Pointing-Pointer We derive the expression for the spin dependent force and the spin Hall current, which is zero for a particular acceleration. Black-Right-Pointing-Pointer The role of the momentum space Berry curvature in an accelerating system is discussed. Black-Right-Pointing-Pointer An expression for the spin polarization for time dependent acceleration is derived.

  2. Energy optimization in ice hockey halls I. The system COP as a multivariable function, brine and design choices

    E-Print Network [OSTI]

    Andrea Ferrantelli; Paul Melóis; Miska Räikkönen; Martti Viljanen

    2013-05-03T23:59:59.000Z

    This work is the first in a series of articles addressing the energy optimization in ice hockey halls. Here we adopt an analytical method, called functional optimization, to find which design and operating conditions maximize the Coefficient Of Performance of the entire cooling system (brine pumps and cooling tower), which we call ${\\rm COP}_{sys}$. This is addressed as a function of several variables, like electric consumption and brine physical properties. By maximizing such function, the best configuration and brine choices for the system can thus be determined accurately and rigorously. We investigate the importance of pipe diameter, depth and brine type (ethylene glycol and ammonia) for average-sized ice rinks. An optimal brine density is found, and we compute the weight of the electric consumption of the brine pumps on ${\\rm COP}_{sys}$. Our formulas are validated with heat flow measurement data obtained at an ice hockey hall in Finland. They are also confronted with technical and cost-related constraints, and implemented by simulations with the program COMSOL Multiphysics. The multivariable approach here discussed is general, and can be applied to the rigorous preliminary study of diverse situations in building physics and in many other areas of interest.

  3. Semi-inclusive DIS Experiments Using Transversely Polarized Targets in Hall-A: Current Results and Future Plans

    SciTech Connect (OSTI)

    Kalyan Allada

    2012-12-01T23:59:59.000Z

    Measurement of single (SSA) and double spin asymmetries (DSA) in semi-inclusive DIS reactions using polarized targets provide a powerful method to probe transverse momentum dependent parton distribution functions (TMDs). In particular, the experimentally measured SSA on nucleon targets can help in extracting the transversity and Sivers distribution functions of u and d-quarks. Similarly, the measured DSA are sensitive to the quark spin-orbital correlations, and provide an access to the TMD parton distribution function (g{sub 1T} ). A recent experiment conducted in Hall-A Jefferson Lab using transversely polarized {sup 3}He provide first such measurements on neutron target. The measurement was performed using 5.9 GeV beam from CEBAF and measured the target SSA/DSA in the SIDIS reaction {sup 3}He{sup {dagger}}(e,e'{pi}{sup {+/-}} )X. The kinematical range, x = 0.19 ~ 0.34, at Q{sup 2} = 1.77 ~ 2.73 (GeV/c){sup 2} , was focused on the valence quark region. The results from this measurement along with our plans for future high precision measurements in Hall-A are presented.

  4. Numerical study of the characteristics of the ion and fast atom beams in an end-Hall ion source

    SciTech Connect (OSTI)

    Oudini, N. [Universite de Toulouse, UPS, INPT, LAPLACE (Laboratoire Plasma et Conversion d'Energie), 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France); Garrigues, L.; Hagelaar, G. J. M.; Boeuf, J. P. [Universite de Toulouse, UPS, INPT, LAPLACE (Laboratoire Plasma et Conversion d'Energie), 118 route de Narbonne, F-31062 Toulouse Cedex 9 (France); CNRS, LAPLACE, F-31062 Toulouse (France)

    2012-10-15T23:59:59.000Z

    An end-Hall ion source is a cylindrical magnetized device of few centimeters in length able to generate an ion beam with a current of typically 1 A and ion energies in the range of 100 eV. This ion source does not use acceleration grids, has a relatively large ion beam divergence, and is well suited for ion assisted deposition processes. In this paper, a self-consistent two-dimensional quasi-neutral model of an end-Hall ion source is used to understand the parameters controlling the characteristics of the extracted. The model results underline the role of charge exchange collisions on beam properties. The calculated energy distribution functions reveal the existence of groups of slow ions and fast neutrals. Ion mean energy corresponds to roughly 60% of the discharge voltage, while the root mean square deviation from the mean energy corresponds to about 33% of the discharge voltage, as in experiments. The influence of the position of the electron emitting source on the ion angular distribution is also shown.

  5. Energy optimization in ice hockey halls I. The system COP as a multivariable function, brine and design choices

    E-Print Network [OSTI]

    Ferrantelli, Andrea; Räikkönen, Miska; Viljanen, Martti

    2012-01-01T23:59:59.000Z

    This work is the first of a series of articles addressing the energy optimization in ice hockey halls. Here we outline an analytic method to predict in which design and operating conditions the COP of the entire cooling system (refrigerator and cooling tower) ${\\rm COP}_{sys}$ is maximum. ${\\rm COP}_{sys}$ is investigated as a function of several variables, like electric consumption and brine physical properties. With this method, the best configuration and brine choices for the system can therefore be determined in advance. We estimate the optimal design of an average-sized ice rink, including pipe diameter, depth and brine type (ethylene glycol and ammonia). We also single out an optimal brine density and show the impact of the electric consumption of the pump on ${\\rm COP}_{sys}$. Our theoretical predictions are validated with heat flow measurement data obtained at an ice hockey hall in Finland. They are also confronted with technical and cost-related constraints, and implemented by simulations with the pr...

  6. Erforsch. biol. Ress. Mongolei (Halle/Saale) 2007 (10): 159-176 Social Networks in Wild Asses: Comparing Patterns and Processes

    E-Print Network [OSTI]

    Rubenstein, Daniel I.

    159 Erforsch. biol. Ress. Mongolei (Halle/Saale) 2007 (10): 159-176 Social Networks in Wild Asses Abstract Asiatic wild asses inhabit some of the most arid environments in the world. All live in fission. Characterizing details of social structure of wild ass populations has been a challenge and has made it difficult

  7. College of Agriculture and Life Sciences Study Abroad Office 111Curtiss Hall, Iowa State University Phone (515)294-8447 Fax (515) 294-9477

    E-Print Network [OSTI]

    Lin, Zhiqun

    College of Agriculture and Life Sciences Study Abroad Office 111Curtiss Hall, Iowa State University Phone (515)294-8447 Fax (515) 294-9477 College of Agriculture and Life Sciences Study Abroad Scholarship Study Abroad office, which are for College of Agriculture and Life Sciences students only. Please refer

  8. Ice Sheets: Byrd Polar Outreach & Education March 2013 It has been a busy month in Scott Hall as we have undertaken a few simple projects to make the

    E-Print Network [OSTI]

    Howat, Ian M.

    in Scott Hall as we have undertaken a few simple projects to make the facility more inviting. The office for a Departmental Impact Grant Apply by Monday, April 1st for the Office of Distance Education & eLearning (ODEE, or enables anytime/anyplace learning. Contact: ltgrants@osu.edu Read more: go.osu.edu/IG #12;Upcoming

  9. Representative Syllabus for P140 Prof. Sandra Shapshay P140 M/W 11:15pm-12:05pm Woodburn Hall 009

    E-Print Network [OSTI]

    Indiana University

    Representative Syllabus for P140 Prof. Sandra Shapshay P140 M/W 11:15pm-12:05pm Woodburn Hall 009-10:30am, SY 021 Syllabus: P140 Introduction to Ethics Welcome to Introduction to Ethics. This is a lecture

  10. Department of Spanish and Portuguese University of Wisconsin--Madison 1018 Van Hise Hall -1220 Linden Drive Madison, WI 53706-1557

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    Department of Spanish and Portuguese University of Wisconsin--Madison 1018 Van Hise Hall - 1220 the Chair Rethinking the mission of the Department Like many departments of Spanish and Portuguese, cultural and linguistic dimensions Spanish has achieved in this country in the last thirty years

  11. Produced by OHSU Strategic Communications, Nov. 30, 2012. If you need printed copies stop by Baird Hall 1048 or call 503 494-8231.

    E-Print Network [OSTI]

    Chapman, Michael S.

    by Baird Hall 1048 or call 503 494-8231. OHSU is moving into a new era, defined by health reform to improve the health and well being of Oregonians. We are partners in more than 200 community health care and retain primary care providers and administers several tax credit programs that help keep rural health

  12. ESM 201 Ecology of Managed Ecosystems (4.0 units) Fall 2011 Tues, Thurs 8:30 -9:45am; Bren Hall 1414

    E-Print Network [OSTI]

    California at Santa Barbara, University of

    ESM 201 Ecology of Managed Ecosystems (4.0 units) Fall 2011 Tues, Thurs 8:30 - 9:45am; Bren Hall@bren.ucsb.edu) This course covers principles of individual, population, community, and ecosystem ecology, with an emphasis on applications (conservation, resource management, ecological effects of pollution and habitat fragmentation, etc

  13. arXiv:1106.5208v3[cond-mat.mes-hall]25Apr2012 Thermoelectric transport with electron-phonon coupling and electron-electron

    E-Print Network [OSTI]

    Li, Baowen

    arXiv:1106.5208v3[cond-mat.mes-hall]25Apr2012 Thermoelectric transport with electron, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA 4 Department of Physics, Zhejiang's functions, we investigate the thermoelectric transport in a single molecular junction with electron

  14. Advanced Econometrics (26:223:655:01) Spring 2008 Meets Tuesdays, 2:30-5:20 PM, GFMC (Ackerson Hall 106)

    E-Print Network [OSTI]

    Lin, Xiaodong

    Advanced Econometrics (26:223:655:01) Spring 2008 Meets Tuesdays, 2:30-5:20 PM, GFMC (Ackerson Hall and generalization of the material covered in Econometrics (26:223:554). The purpose of this course is to develop advanced econometric estimation and hypothesis testing tools to analyze and interpret the empirical

  15. Charge Hall effect driven by spin-dependent chemical potential gradients and Onsager relations in mesoscopic systems RID B-8398-2011 RID A-7392-2009

    E-Print Network [OSTI]

    Hankiewicz, EM; Li, J.; Jungwirth, T.; Niu, Q.; Shen, SQ; Sinova, Jairo.

    2005-01-01T23:59:59.000Z

    -current response generated perpendicular to the driving electric field. Recently, the spin Hall effect was experimentally ob- served by Kato et al.6 in n-doped GaAs using the Kerr effect and by Wunderlich et al.7 in the p-n junction light-emitting diodes based...

  16. Magnetic percolation and giant spontaneous Hall effect in La1 xCaxCoO3 ,,0.2 x 0.5... A. V. Samoilov

    E-Print Network [OSTI]

    Yeh, Nai-Chang

    Magnetic percolation and giant spontaneous Hall effect in La1 xCaxCoO3 ,,0.2 x 0.5... A. V and Center for Space Microelectronics Technology, Jet Propulsion Laboratory, California Institute Technology, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109

  17. arXiv:1007.2404v1[cond-mat.mes-hall]14Jul2010 Electrostatically defined Quantum Dots in a Si/SiGe

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    arXiv:1007.2404v1[cond-mat.mes-hall]14Jul2010 Electrostatically defined Quantum Dots in a Si/SiGe (QD) realized in a molecular beam epitaxy grown Si/SiGe heterostructure. Transport and charge as a spin qubit. Our results promise the suitability of electrostatically defined QDs in Si/SiGe

  18. *Email: kammen@berkeley.edu, Telephone: (510) 642-1640, Fax: (510) 642-1085, Mailing Address: 310 Barrows Hall, University of California, Berkeley, CA 94720, USA

    E-Print Network [OSTI]

    Kammen, Daniel M.

    ' (OAS) Sustainable Energy Policy Initiative Report for Latin America and the Caribbean 2007 (CARICOM Barrows Hall, University of California, Berkeley, CA 94720, USA Renewable Energy Sector Development resources. Here we examine four case studies of renewable energy advancements being made by public utilities

  19. Edge states in graphene quantum dots: Fractional quantum Hall effect analogies and differences at zero magnetic field

    E-Print Network [OSTI]

    Igor Romanovsky; Constantine Yannouleas; Uzi Landman

    2009-01-15T23:59:59.000Z

    We investigate the way that the degenerate manifold of midgap edge states in quasicircular graphene quantum dots with zig-zag boundaries supports, under free-magnetic-field conditions, strongly correlated many-body behavior analogous to the fractional quantum Hall effect (FQHE), familiar from the case of semiconductor heterostructures in high magnetic fields. Systematic exact-diagonalization (EXD) numerical studies are presented for the first time for 5 graphene REMs exhibit in all instances a single (0,N) polygonal-ring molecular (crystalline) structure, with all the electrons localized on the edge. Disruptions in the zig-zag boundary condition along the circular edge act effectively as impurities that pin the electron molecule, yielding single-particle densities with broken rotational symmetry that portray directly the azimuthal localization of the edge electrons.

  20. 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

    2015-02-01T23:59:59.000Z

    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 cm. 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.

  1. Y-shape spin-separator for two-dimensional group-IV nanoribbons based on quantum spin hall effect

    SciTech Connect (OSTI)

    Gupta, Gaurav, E-mail: a0089293@nus.edu.sg; Abdul Jalil, Mansoor Bin; Liang, Gengchiau, E-mail: elelg@nus.edu.sg [Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576 (Singapore); Lin, Hsin [Graphene Research Centre and Department of Physics, National University of Singapore, Singapore 117542 (Singapore); Bansil, Arun [Department of Physics, Northeastern University, Boston, Massachusetts 02115 (United States); Huang, Cheng-Yi; Tsai, Wei-Feng [Department of Physics, National Sun Yat-sen University, Kaohsiung 80424, Taiwan (China)

    2014-01-20T23:59:59.000Z

    An efficient spin-separator that operates in quantum spin hall phase has been investigated for two-dimensional group-IV materials. A three-terminal Y-shaped device has been simulated via non-equilibrium Green Function to demonstrate the separation of unpolarized current at source terminal into spin-polarized current of opposite polarity at the two drain terminals. Device controls, i.e., tunable buckling and perpendicular magnetic field have been modeled comprehensively to evaluate the device feasibility and performance. It is shown that these controls can preferentially steer current between the two drains to create a differential charge current with complementary spin polarization, thus enabling a convenient regulation of output signal.

  2. 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

    2015-02-01T23:59:59.000Z

    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 cm. 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

  3. ACADEMIC DEPARTMENTAL CONTACTS, 2013-14 University Registrar, 7/15/2013, deptphones13-14.docx 8700 President: Kenneth P. Ruscio Washington Hall Elizabeth Knapp, Senior Asst & Dir of Johnson Prog., 8702 Exec Asst: Tudi Moncure, 8700

    E-Print Network [OSTI]

    Marsh, David

    Senior Research Asst: Melanie Mabry, 4181 8746 The College: Suzanne P. Keen (Interim, 2012-14) Lee. Dean Robert Straughan ; Asst. Dean John Jensen, 8604 Holekamp Hall Admin Assts: Melinda Coleman,8603

  4. CODEJoin Associate Professor of Computer Science Frances Van Scoy at 2:30 p.m., Wednesday, December 11 in G-1, Martin Hall, for "Programming in Processing in 50 Minutes." NO BACK-

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    , December 11 in G-1, Martin Hall, for "Programming in Processing in 50 Minutes." NO BACK- GROUND IN COMPUTER' and show that any- one can learn the basics to be a maker, a creator, an innovator." An Hour of Code

  5. M5-brane defect and quantum Hall effect in AdS{sub 4}xN(1,1)/N=3 superconformal field theory

    SciTech Connect (OSTI)

    Fujita, Mitsutoshi [Department of Physics, Kyoto University, Kyoto 606-8502 (Japan)

    2011-05-15T23:59:59.000Z

    We study the d=11 gravity dual AdS{sub 4}xN(1,1) of the d=3 N=3 flavored Chern-Simons-matter theory. In the dual gravity side, we analyze the M5-brane filling AdS{sub 3} inside AdS{sub 4} and derive the quantized Hall conductivity of the dual gauge theory. In the gauge theory side, this M5-brane intersects the gauge theory at the codimension-one defect.

  6. 413 South Hall 419-372-8495 Email DSS@bgsu.edu Bowling Green, OH 43403-0185 Fax 419-372-8496 www.bgsu.edu

    E-Print Network [OSTI]

    Moore, Paul A.

    to the staff of Disability Services at Bowling Green State University. I further request that this information413 South Hall 419-372-8495 Email DSS@bgsu.edu Bowling Green, OH 43403-0185 Fax 419-372-8496 www 419-372-8495 Email DSS@bgsu.edu Bowling Green, OH 43403-0185 Fax 419-372-8496 www.bgsu.edu RELEASE

  7. Feedback control of an azimuthal oscillation in the E Multiplication-Sign B discharge of Hall thrusters

    SciTech Connect (OSTI)

    Griswold, M. E.; Ellison, C. L.; Raitses, Y.; Fisch, N. J. [Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)

    2012-05-15T23:59:59.000Z

    Feedback control of a low-frequency azimuthal wave known as a 'rotating spoke' in the E Multiplication-Sign B discharge of a cylindrical Hall thruster was demonstrated. The rotating spoke is an m = 1 azimuthal variation in density, electron temperature, and potential that rotates at about 10% of the local E Multiplication-Sign B electron rotation speed. It causes increased electron transport across the magnetic field and is suspected to be an ionization wave. Feedback control of this wave required special consideration because, although it causes a rotating azimuthal variation in the current density to the anode, it does not show up as a signal in the total thruster discharge current. Therefore, an extra source of information was needed to track the oscillation, which was addressed by using a special anode that was split azimuthally into four segments. The current to each segment oscillates as the rotating spoke passes over it, and feedback is accomplished by resistors connected in series with each anode segment which causes the voltage on a segment to decrease in proportion to the current through that segment. The feedback resulted in the disappearance of a coherent azimuthal wave and a decrease in the time-averaged total discharge current by up to 13.2%.

  8. Experimental Study of the Hall Effect and Electron Diffusion Region During Magnetic Reconnection in a Laboratory Plasma

    SciTech Connect (OSTI)

    Ren, Yang; Yamada, Masaaki; Ji, Hantao; Dorfman, Seth; Gerhardt, Stefan; Kulsrud, Russel

    2008-07-02T23:59:59.000Z

    The Hall effect during magnetic reconnection without an external guide field has been extensively studied in the laboratory plasma of the Magnetic Reconnection Experiment (MRX) [Yamada et al., Phys. Plasmas 4, 1936 (1997)] by measuring its key signature, an out-of-plane quadrupole magnetic field, with magnetic probe arrays whose spatial resolution is on the order of the electron skin depth. The in-plane electron flow is deduced from out-of-plane magnetic field measurements. The measured in-plane electron flow and numerical results are in good agreement. The electron diffusion region is identified by measuring the electron outflow channel. The width of the electron diffusion region scales with the electron skin depth (~ 8c/?pe) and the peak electron outflow velocity scales with the electron Alfven velocity (~ 0:11VeA), independent of ion mass. The measured width of the electron diffusion region is much wider and the observed electron outflow is much slower than those obtained in 2D numerical simulations. It is found that the classical and anomalous dissipation present in the experiment can broaden the electron diffusion region and slow the electron outflow. As a consequence, the electron outflow flux remain consistent with numerical simulations. The ions, as measured by a Mach probe, have a much wider outflow channel than the electrons, and their outflow is much slower than the electron outflow everywhere in the electron diffusion region.

  9. Shockley-Read-Hall recombination in pre-filled and photo-filled intermediate band solar cells

    SciTech Connect (OSTI)

    Mayani, Maryam Gholami; Reenaas, Turid Worren, E-mail: turid.reenaas@ntnu.no [Department of Physics, Norwegian University of Science and Technology, 7491 Trondheim (Norway)

    2014-08-18T23:59:59.000Z

    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.

  10. Experimental and theoretical study on effects of magnetic field topology on near wall conductivity in a Hall thruster

    SciTech Connect (OSTI)

    Yu Daren; Li Hong; Ning Zhongxi; Yan Guojun [Laboratory of Plasma Propulsion, Mail Box 458, Harbin Institute of Technology, Harbin 150001 (China); Wu Zhiwen [School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083 (China)

    2009-10-15T23:59:59.000Z

    An experiment has been made to investigate the effect of curved magnetic field topology on near wall conductivity in the ion acceleration region of Hall thrusters. The experimental results show that the electron current due to near wall conductivity is of the minimum in the case of focused topology and increases in the cases of both less-focus and over-focus topologies. This finding cannot be explained properly by the magnetic mirror effect, which is the one and only reported effect related to the magnetic field curvature so far. Based on the analysis of interaction between the plasma and the wall, a new physical effect is proposed. The difference of magnetic field topology causes different electric potential distribution, leads to different ion flux to the wall, results in the change of sheath property and secondary electron emission, and finally affects the electron current due to near wall conductivity. This effect is further justified by the agreement between the experiment and simulation which is performed with a particle-in-cell model. Therefore, we conclude that the ion flow injection is a significant effect to near wall conductivity in the scope of curved magnetic field topology besides the magnetic mirror effect. Moreover, we find that the focus topology of magnetic field is favorable to obtain a high thruster performance from both the ion acceleration aspect and the electron conduction aspect and so is useful practically for thruster optimization.

  11. Joule heating-induced coexisted spin Seebeck effect and spin Hall magnetoresistance in the platinum/Y{sub 3}Fe{sub 5}O{sub 12} structure

    SciTech Connect (OSTI)

    Wang, W. X. [State Key Laboratory of Advance Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China); Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Wang, S. H.; Zou, L. K.; Cai, J. W.; Sun, J. R., E-mail: jrsun@iphy.ac.cn, E-mail: sun-zg@whut.edu.cn [Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Sun, Z. G. [State Key Laboratory of Advance Technology for Material Synthesis and Processing, Wuhan University of Technology, Wuhan 430070 (China)

    2014-11-03T23:59:59.000Z

    Spin Seebeck effect (SSE) and spin Hall magnetoresistance (SMR) are observed simultaneously in the Pt/Y{sub 3}Fe{sub 5}O{sub 12} hybrid structure when thermal gradient is produced by Joule heating. According to their dependences on applied current, these two effects can be separated. Their dependence on heating power and magnetic field is systematically studied. With the increase of heating power, the SSE enhances linearly, whereas the SMR decreases slowly. The origin of the spin currents is further analyzed. The heating power dependences of the spin currents associated with the SSE and the SMR are found to be different.

  12. Francis Hall - 8 

    E-Print Network [OSTI]

    Unknown

    2006-01-01T23:59:59.000Z

    typically appearing in early modern literature courses. Francis J. Bremer and Lynn A. Botelho, eds. The World of John Winthrop: Essays on England and New England 1588-1649. Boston: Massachusetts Historical Society, 2005. 408 pp. $50.00. Review...

  13. Guion Hall - 10 

    E-Print Network [OSTI]

    Unknown

    2005-06-30T23:59:59.000Z

    to consider non-isochoric effects, by which the error introduced into energy and entropy calculations and the validity of the design were evaluated. The simulations were done for methane over a range of densities from 500 to 25,000 mol m[] (0.05 < p[] < 2...

  14. Davis- Gary Hall & Council 

    E-Print Network [OSTI]

    Unknown

    2011-08-17T23:59:59.000Z

    JOYCE GARY ' ', l TEGHNI'&UES OE' GHARAGTERI ZIN" CHARLEY IN CHARLEY IS l~lY DARLING, AllANDA Il'1 'Tl'E l'lOONLIGHT, AN D TABITHA IN A I~'EAREUL JOY A Thesfs VIRGINIA LEE COl/EN Approved as to style and content by: hairman of Committee Heed.... of Department Hem r December 1972 4 v' 4 2 F '~ Joyce Gary's '1'echnioues of Characterizing Charley in Cherie Is H Darlin, Amends in '1'he Hoonli. ht and Tabitha in A Pearful Jo . (Dece!!!ber 197' j Virginia Lee Cowen, B. A. , Pan American University...

  15. Town Hall Questions Answered

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What'sis Taking Over OurThe Iron Spin Transition in2, 2003Tool ofTopo II:7.1 7.0Coupled Earth8, 2014 CBFO

  16. Residence Hall & Furnished

    E-Print Network [OSTI]

    Polly, David

    Air Conditioner Units . . . . . . . . . . . . . . . . . 7 Bunking/Lofting Beds & Air Conditioning . . . . . . . . . . . . 9 Mailing Address

  17. Fermilab's Wilson Hall

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.New Mexico Feb. 13, 2013FocusreceivesTrafficUsersDiversity

  18. Hall_A

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm) Harmonic EngineHIV and evolutionSite H-Area

  19. Hall_B

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm) Harmonic EngineHIV and evolutionSite H-AreaN∆ Transition

  20. Hall_C

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm) Harmonic EngineHIV and evolutionSite H-AreaN∆ Transition

  1. Hall_D

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) EnvironmentalGyroSolé(tm) Harmonic EngineHIV and evolutionSite H-AreaN∆

  2. In Proceedings of the Technology Demonstration Session of the 14th International Conference on Knowledge Engineering and Knowledge Management, EKAW 2004, 5-8th October 2004 -Whittlebury Hall, Northamptonshire, UK.

    E-Print Network [OSTI]

    Tecuci, Gheorghe

    on Knowledge Engineering and Knowledge Management, EKAW 2004, 5-8th October 2004 - Whittlebury Hall assistance from knowledge engineers, to develop knowledge-based agents incorporating their expertise of knowledge bases and agents, by subject matter experts, with limited assistance from knowledge engineers [1

  3. UW School of Oceanography Box 357940 206-543-5062 UW EH&S Radiation Safety Section Box 354400 201 Hall Health Seattle WA 98195-4400 206-543-0463

    E-Print Network [OSTI]

    jeopardize future work on Oceanographic research vessels. Initials Required 9. Radiation Protection ProgramUW School of Oceanography Box 357940 206-543-5062 UW EH&S Radiation Safety Section Box 354400 201-543-5062 UW EH&S Radiation Safety Section Box 354400 201 Hall Health Seattle WA 98195-4400 206

  4. UW EH&S Radiation Safety Section Box 354400 201 Hall Health Seattle WA 98195-4400 206-543-0463 *Your Social Security Number (SSN) is requested to better track and coordinate your records within our

    E-Print Network [OSTI]

    to the best of my knowledge. I agree to conform to the Rules and Regulations for Radiation Protection WAC-246 of Radiation Protection: Where When Instructor Duration b) Radioactivity Measurement StandardizationUW EH&S Radiation Safety Section Box 354400 201 Hall Health Seattle WA 98195-4400 206

  5. arXiv:1102.3798v1[cond-mat.mes-hall]18Feb2011 Graphene on the carbon face of SiC: electronic structure modification by hydrogen

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    arXiv:1102.3798v1[cond-mat.mes-hall]18Feb2011 Graphene on the carbon face of SiC: electronic that the first C layer on the SiC(0001)(2×2)C surface already exhibits graphene- like electronic structure transfer mechanism. Here, we study the effects of interface mod- ifications on the graphene layer using

  6. G-COE International Symposium (Specially Jointed with BK21 Program at Ajou University) "ZERO CARBON ENERGY 2011" (draft) Date: 18 19 August, 2011 Venue: Paldal-Hall (Rooms 108 and 110), Ajou University, Suwon, Korea

    E-Print Network [OSTI]

    Takada, Shoji

    in the Age of Global Warming ­ Toward CO2 Zero-emission Energy System" 11:10-11:50 Plenary Session (Socio3rd G-COE International Symposium (Specially Jointed with BK21 Program at Ajou University) ­ "ZERO CARBON ENERGY 2011" ­ (draft) Date: 18 ­ 19 August, 2011 Venue: Paldal-Hall (Rooms 108 and 110), Ajou

  7. ETME 430 Fluid Power System Design Fall 2011 rev. 9-20-2011 LEC 01 W,F 11:00 11:50 Roberts Hall 209 LAB 02 M 11:00-12:50 EPS 136

    E-Print Network [OSTI]

    Dyer, Bill

    ETME 430 Fluid Power System Design Fall 2011 rev. 9-20-2011 LEC 01 ­ W,F 11:00 ­ 11:50 Roberts Hall and assemble real-world, functional fluid power systems and controls. Understand what engineering references and application of fluid power technology in industry today. Students will learn to select components, design

  8. 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.

    2012-02-01T23:59:59.000Z

    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 that the ZnO 2D system is ideal for investigating the effect of electron correlations in the QH regime.

  9. 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.

    2012-02-01T23:59:59.000Z

    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

  10. Edge and bulk components of lowest-Landau-level orbitals, correlated fractional quantum Hall effect incompressible states, and insulating behavior in finite graphene samples

    E-Print Network [OSTI]

    Constantine Yannouleas; Igor Romanovsky; Uzi Landman

    2010-09-13T23:59:59.000Z

    Many-body calculations of the total energy of interacting Dirac electrons in finite graphene samples exhibit joint occurrence of cusps at angular momenta corresponding to fractional fillings characteristic of formation of incompressible (gapped) correlated states (nu=1/3 in particular) and opening of an insulating energy gap (that increases with the magnetic field) at the Dirac point, in correspondence with experiments. Single-particle basis functions obeying the zigzag boundary condition at the sample edge are employed in exact diagonalization of the interelectron Coulomb interaction, showing, at all sizes, mixed equal-weight bulk and edge components. The consequent depletion of the bulk electron density attenuates the fractional-quantum-Hall-effect excitation energies and the edge charge accumulation results in a gap in the many-body spectrum.

  11. 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)

    2014-11-03T23:59:59.000Z

    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 27–102?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.

  12. Jackson Hot Springs Lodge Space Heating Low Temperature Geothermal...

    Open Energy Info (EERE)

    Hot Springs Lodge Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Jackson Hot Springs Lodge Space Heating Low Temperature Geothermal Facility...

  13. Glenwood Hot Springs Lodge Space Heating Low Temperature Geothermal...

    Open Energy Info (EERE)

    Lodge Space Heating Low Temperature Geothermal Facility Jump to: navigation, search Name Glenwood Hot Springs Lodge Space Heating Low Temperature Geothermal Facility Facility...

  14. Epidemiology and Biostatistics Occupational Health Purvis Hall, 1020 Pine Avenue W. H3A 1A2 Lady Meredith, 1110 Pine Avenue W. H3A 1A3

    E-Print Network [OSTI]

    Barthelat, Francois

    6271 Olivier, M. 17 6257 Saba N. (on leave) 3rd floor 2236 Pai, M. 50 5422 Platt R 46 2191 Public Health Epidemiology Purvis Hall / Lady Meredith TELEPHONE LIST 1 Last Updated on 11/10/2009 Platt, R. 46-4349 Fax: 412-4311 Platt, R. (PT-305) X 23288 Fax: 412-4331 Pless, I.B. 412-4465 Fax: 412-4351 Clinical

  15. Influence of Ga content on the structure and anomalous Hall effect of Fe{sub 1?x}Ga{sub x} thin films on GaSb(100)

    SciTech Connect (OSTI)

    Anh Tuan, Duong; Shin, Yooleemi; Viet Cuong, Tran; Cho, Sunglae, E-mail: slcho@ulsan.ac.kr [Department of Physics and Energy Harvest-Storage Research Center, University of Ulsan, Ulsan 680-749 (Korea, Republic of); Phan, The-Long [Department of Physics, Chungbuk National University, Cheongju 361-763 (Korea, Republic of)

    2014-05-07T23:59:59.000Z

    The Fe{sub 1?x}Ga{sub x} thin films (x?=?0.4, 0.5) have been grown on GaSb(100) substrate using molecular beam epitaxy. An epitaxial film with bcc ?-Fe crystal structure (A2) is observed in Fe{sub 0.6}Ga{sub 0.4} film, while an impure Fe{sub 3}Ga phase with DO{sub 3} structure is appeared in Fe{sub 0.5}Ga{sub 0.5} film. The saturated magnetizations at room temperature are observed to be 570?emu/cm{sup 3} and 180?emu/cm{sup 3} and the coercivities to be 170 and 364?Oe for Fe{sub 0.6}Ga{sub 0.4} and Fe{sub 0.5}Ga{sub 0.5}, respectively. A hysteresis trend in Hall resistance vs. magnetic field is observed for Fe{sub 0.5}Ga{sub 0.5} film. However, there is a weak hysteresis noticed in Fe{sub 0.4}Ga{sub 0.6} thin film.

  16. Micro-focused Brillouin light scattering study of the magnetization dynamics driven by Spin Hall effect in a transversely magnetized NiFe nanowire

    E-Print Network [OSTI]

    Madami, M; Moriyama, T; Tanaka, K; Siracusano, G; Carpentieri, M; Finocchio, G; Tacchi, S; Ono, T; Carlotti, G

    2015-01-01T23:59:59.000Z

    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(4nm)/NiFe(4nm)/SiO2(5nm) layered nanowire with lateral dimensions 500x2750 nm2. 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 d...

  17. Hall, Seebeck, and Nernst Coefficients of Underdoped HgBa2CuO4+?: Fermi-Surface Reconstruction in an Archetypal Cuprate Superconductor

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

    Doiron-Leyraud, Nicolas; Lepault, S.; Cyr-Choinière, O.; Vignolle, B.; Grissonnanche, G.; Laliberté, F.; Chang, J.; Bariši?, N.; Chan, M. K.; Ji, L.; Zhao, X.; Li, Y.; Greven, M.; Proust, C.; Taillefer, Louis

    2013-06-01T23:59:59.000Z

    Charge-density-wave order has been observed in cuprate superconductors whose crystal structure breaks the square symmetry of the CuO2 planes, such as orthorhombic YBa2Cu3Oy (YBCO), but not so far in cuprates that preserve that symmetry, such as tetragonal HgBa2CuO4+? (Hg1201). We have measured the Hall (RH), Seebeck (S), and Nernst (?) coefficients of underdoped Hg1201 in magnetic fields large enough to suppress superconductivity. The high-field RH(T) and S(T) are found to drop with decreasing temperature and become negative, as also observed in YBCO at comparable doping. In YBCO, the negative RH and S are signatures of a small electron pocket caused by Fermi-surface reconstruction, attributed to charge-density-wave modulations observed in the same range of doping and temperature. We deduce that a similar Fermi-surface reconstruction takes place in Hg1201, evidence that density-wave order exists in this material. A striking similarity is also found in the normal-state Nernst coefficient ?(T), further supporting this interpretation. Given the model nature of Hg1201, Fermi-surface reconstruction appears to be common to all hole-doped cuprates, suggesting that density-wave order is a fundamental property of these materials.

  18. The influence of magnetic field strength in ionization stage on ion transport between two stages of a double stage Hall thruster

    SciTech Connect (OSTI)

    Yu Daren; Song Maojiang; Li Hong; Liu Hui; Han Ke [Lab of Plasma Propulsion, Mail Box 458, Harbin Institute of Technology, Harbin 150001 (China)

    2012-11-15T23:59:59.000Z

    It is futile for a double stage Hall thruster to design a special ionization stage if the ionized ions cannot enter the acceleration stage. Based on this viewpoint, the ion transport under different magnetic field strengths in the ionization stage is investigated, and the physical mechanisms affecting the ion transport are analyzed in this paper. With a combined experimental and particle-in-cell simulation study, it is found that the ion transport between two stages is chiefly affected by the potential well, the potential barrier, and the potential drop at the bottom of potential well. With the increase of magnetic field strength in the ionization stage, there is larger plasma density caused by larger potential well. Furthermore, the potential barrier near the intermediate electrode declines first and then rises up while the potential drop at the bottom of potential well rises up first and then declines as the magnetic field strength increases in the ionization stage. Consequently, both the ion current entering the acceleration stage and the total ion current ejected from the thruster rise up first and then decline as the magnetic field strength increases in the ionization stage. Therefore, there is an optimal magnetic field strength in the ionization stage to guide the ion transport between two stages.

  19. Results of the radiological survey at the Firemen's Memorial Park and Fire Hall No. 2, Garibaldi Avenue and Kennedy Drive, Lodi, New Jersey (LJ066)

    SciTech Connect (OSTI)

    Foley, R.D.; Floyd, L.M.; Crutcher, J.W. (Oak Ridge National Lab., TN (USA))

    1989-08-01T23:59:59.000Z

    Maywood Chemical Works (MCW) of Maywood, New Jersey, generated process wastes and residues associated with the production and refining of thorium and thorium compounds from monazite ores from 1916 to 1956. MCW supplied rare earth metals and thorium compounds to the Atomic Energy Commission and various other government agencies from the late 1940s to the mid-1950s. Area residents used the sandlike waste from this thorium extraction process mixed with tea and cocoa leaves as mulch in their yards. Some of these contaminated wastes were also eroded from the site into Lodi Brook. At the request of the US Department of Energy (DOE), a group from Oak Ridge National Laboratory conducts investigative radiological surveys of properties in the vicinity of MCW to determine whether a property is contaminated with radioactive residues, principally {sup 232}Th, derived from the MCW site. The survey typically includes direct measurement of the gamma radiation levels and soil sampling for radionuclide analyses. The survey of this site, the Firemen's Memorial Park and Fire Hall 2, Garibaldi Avenue and Kennedy Drive, Lodi, New Jersey (LJ066) was conducted during 1987. Results of the survey demonstrated radionuclide concentrations in excess of the DOE Formerly Utilized Sites Remedial Action Program criteria. The radionuclide distributions are typical of the type of material originating from the MCW site. 4 refs., 10 figs., 3 tabs.

  20. Influence of damping constant on inverse spin hall voltage of La{sub 0.7}Sr{sub 0.3}MnO{sub 3}(x)/platinum bilayers

    SciTech Connect (OSTI)

    Luo, G. Y. [Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan (China); Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China); Chang, C. R. [Department of Physics, National Taiwan University, Taipei 10617, Taiwan (China); Lin, J. G., E-mail: jglin@ntu.edu.tw [Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan (China)

    2014-05-07T23:59:59.000Z

    Pure spin transport via spin pumping in the condition of ferromagnetic resonance can be transformed to charge current in the ferromagnetic/paramagnetic bilayer systems, based on inverse spin Hall effect (ISHE). Here, we explore La{sub 0.7}Sr{sub 0.3}MnO(x)/Pt(5.5?nm) [x?=?10 to 65 nm] bilayers to investigate the influence of damping constant on spin pumping efficiency. The results show that the ISHE voltage depend on the damping constant of magnetic moment, suggesting that the precession energy tansferred to lattice/electron of normal metal is a key parameter to control the magnitude of spin current.

  1. University Residence Halls Summer Residential

    E-Print Network [OSTI]

    Scharer, John E.

    -style fish boil served on the sho and organic offerings and home baked desserts bring raves from our guests

  2. Optimal Control PRENTICE HALL INFORMATION

    E-Print Network [OSTI]

    Moore, John Barratt

    Optimal Control Optimal Filtering Computer-ControlledSystems: Theory and Design, 21e Statistical & Systems System Identification and Control Design Using P.I.M. + Software System Identification Medical Control 1 1.2 About This Book in Particular 4 1.3 Part and Chapter Outline 5 0 The Standard Regulator

  3. Sounding Number Dr. Rachel Hall

    E-Print Network [OSTI]

    Hall, Rachel W.

    searching for "drum modes vibration" and "chladni plates." (Chladni plates are lat square metal plates-generated animations. Chladni plate experiment and Chladni patterns published by John Tyndall in 1869. From the UCLA

  4. MARY PARK HALL THE VILLAGE

    E-Print Network [OSTI]

    plants on a cooperative plot. Organic food grown straight from your backyard. For More Information: http: Shop for local, fresh food and produce everyThursday from 10am-3pm. For More Information: http://sfbike.org/download/map.pdf Habitat Gardens: The Campus maintains gardens with over 150 species of native plants that provide food

  5. Sounding Number Dr. Rachel Hall

    E-Print Network [OSTI]

    Hall, Rachel W.

    minute (BPM) rather than Hertz. To convert from Hertz from BPM, use dimensional analysis: 1 Hz = 1 cycles second × 60 seconds minute = 60 cycles minute = 60 BPM. EXERCISE . Find the tempo of the ZZ Top example, measured in BPM. Making a dance mix. Suppose you h

  6. Equity Services 503 Robertson Hall

    E-Print Network [OSTI]

    -520-3612 Emergencies: ext. 4444 Community Resources Ottawa Hospital Sexual Assault Partner Abuse Care Program 613 Police Service- Sexual Abuse and Child Abuse Unit 613-236-1222 ext. 5944 #12;

  7. Oregon State University Magruder Hall

    E-Print Network [OSTI]

    Escher, Christine

    in the Oregon Department of Energy State Energy Efficient Design (SEED) program. The result of the analysis

  8. Davis-gary Hall - 2 

    E-Print Network [OSTI]

    Photographer, if not known, put Unknown

    2009-01-01T23:59:59.000Z

    , Michael Edwards Lisako E. McKyer Head of Department, Gary Ellis May 2012 Major Subject: Recreation, Park and Tourism Sciences iii ABSTRACT Youth, Art, and Life on the Border: An Examination of Coping and Support among Participants in a... in their development. One such resource is the opportunity to engage with non-parental caring adults, who provide youth a chance to build a supportive social network (Scales, Benson, Leffert, & Blyth, 2000). OST programs are also beneficial to youth because...

  9. Bing Concert Hall, Under Construction

    E-Print Network [OSTI]

    Prinz, Friedrich B.

    Freidenrich Center, Under Construction Terman Engineering Center, Demolition Frost Amphitheater Ford Plaza Center Lyman Graduate Residences Sterling Quad Mirrielees Pearce Mitchell Houses Stanford Hospital

  10. Bing Concert Hall, Under Construction

    E-Print Network [OSTI]

    Prinz, Friedrich B.

    Center, Under Construction Terman Engineering Center, Demolition Frost Amphitheater Ford Plaza Galvez Houses Schwab Residential Center Lyman Graduate Residences Sterling Quad Mirrielees Pearce Mitchell

  11. UT Arlington Residence Hall Handbook

    E-Print Network [OSTI]

    Huang, Haiying

    ............................................................17 FACILITIES MANAGEMENT .......................... 17 ROOM AND BUILDING MAINTENANCE.........................................................................21 ABANDONED PROPERTY .............................................21 UT ARLINGTON POLICE "OPERATION

  12. Your Guide to Blumel Hall

    E-Print Network [OSTI]

    Latiolais, M. Paul

    to pick up at the move-in station. Laundry Laundry facilities are located on every odd floor near, please inform an RA. If you leave trash, abandoned furniture, and other goods in common areas (including

  13. Directions to Wilson Hall, Fermilab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisitingContract Management FermiDavidDieselDirections Both the Fermilab box office

  14. Jefferson Lab Experimental Hall B

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 Investigation PeerNOON...JanuaryAstronomyEngineerB Privacy

  15. Jefferson Lab Experimental Hall C

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 Investigation PeerNOON...JanuaryAstronomyEngineerB PrivacyC

  16. Jefferson Lab Experimental Hall D

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12 Investigation PeerNOON...JanuaryAstronomyEngineerB

  17. Fermilab Wilson Hall and Vicinity

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField8,Dist.New Mexico Feb. 13, 2013 NAME: University ofWisconsin

  18. Multi-Probe Diagnostic Hall

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your1 SECTIONES2008-54174More DocumentsofNOV 0 1 2013MAR

  19. USLHC | Angels & Demons Lecture Night - The Science Revealed...

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

    Hall Manfred Paulini Manfred Paulini May 7 New York City, NY 7:00 pm 309 Havemeyer Hall, Columbia University John Parsons Anna Kuchment May 7 Ely, MN 7:00 pm Grand Ely Lodge...

  20. Fermilab | Tevatron | Tevatron Symposium | Travel and Lodging

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) Environmental Assessments (EA)Budget »Travel and Lodging Directions to Fermilab

  1. Miwok villages Miwok-Paiute , 1872 Site of Yosemite Lodge

    E-Print Network [OSTI]

    Callender, Craig

    -to-no permanent dwellings... #12;Yosemite lodges #12;Local indigenous out, scientists, tourists, timber concessionaires, oil and mining companies in...? #12;Then ordered to leave, and later, "whites only" Yellowstone

  2. National Energy Literacy Virtual Town Hall

    Broader source: Energy.gov [DOE]

    The webinar will be a dynamic, virtual conversation for educators about ongoing efforts from across the country in utilizing the Department of Energy's Energy Literacy Framework to address one of our nation's’ biggest national challenges, energy illiteracy.

  3. Town Hall Meeting June 8th, 2011

    E-Print Network [OSTI]

    and Western Canada as well as New England have grown nicely 2011 vs. 2010 International growth is driven - University Wide Engagement in Recruitment A positive attitude and energy has taken hold throughout the BU;Enrolment 3) Trends for Bishop's Demographic trends - declining number of 17-24 year olds in Canada

  4. WASHINGTON SQUARE HALL 118 ONE WASHINGTON SQUARE

    E-Print Network [OSTI]

    Su, Xiao

    Impact Assessment Rachel O'Malley Concentration in Environmental Restoration and Resource Management: (408) 924-5477 ENVIRONMENTAL-STUDIES@SJSU.EDU WWW.SJSU.EDU/ENVS SJSU DEPARTMENT OF ENVIRONMENTAL Mulvaney, Rachel O'Malley, and Will Russell BACHELOR OF SCIENCE IN ENVIRONMENTAL STUDIES Bachelor

  5. Spin hall effect in paramagnetic thin films

    E-Print Network [OSTI]

    Xu, Huachun

    2009-05-15T23:59:59.000Z

    the principle of Light Emitting Diode, but changed the design to a coplanar structure with two p-n junctions. A Light-Emitting Diode [27] consists of a chip of semiconductor materials doped with impurities to create a p-n junction. When the LED is forward...

  6. University Residence Hall Move-Out Begins

    E-Print Network [OSTI]

    California at Santa Barbara, University of

    services and the University Center compost all food-prep waste and recycle their used cooking oil the daylight hours. Dining services continues to increase organic and local farms in food supply contracts. Currently, 10% of the produce served is certified organic or local/sustainable, and the seafood served

  7. The BosTon College STOKES HALL

    E-Print Network [OSTI]

    Huang, Jianyu

    's enduring commit- ment to the liberal arts," said Col- lege of Arts & Sciences Dean Da- vid Quigley. "The David Quigley September 30, 2010 Publi

  8. The Open University Library Walton Hall

    E-Print Network [OSTI]

    St Andrews, University of

    Copernic et son époque. 520.92 COP ADA Adams, D. (1835) Arithmetic : in which the principles of operating

  9. Daniel B Reeves 6127 Wilder Hall

    E-Print Network [OSTI]

    for magnetic nanoparticle dynamics Colby College, Waterville, ME -- B.A. in Physics (2010) Honors thesis the magnetization from the excitation field, Journal of Physics D: Jan. 2014 Simulations of magnetic nanoparticle, Nanotechnology: Aug. 2013 Zhang et al. Molecular sensing with magnetic nanoparticles using magnetic spectroscopy

  10. Opening Statement Congressman Ralph M. Hall

    E-Print Network [OSTI]

    product. Once again we are back on energy legislation. This nation needs an energy bill now and we need to ensure that our domestic supply is as secure as we can make it. Much of the crude oil and refined petroleum products we are using today comes from unstable areas of the world. We are at war in the Middle

  11. Senate Council Meeting Minutes 2700 Posvar Hall

    E-Print Network [OSTI]

    Jiang, Huiqiang

    of new officers of student government o Currently attending meetings in Harrisburg on budget issues o February 12 Pitt Day in Harrisburg; hoping that the process will be less #12;2 contentious. Need advocacy

  12. Green Features Tour Duke Environment Hall Landscaping

    E-Print Network [OSTI]

    Reif, John H.

    solar thermal panels (center) provide domestic hot water for the building. Photovoltaic Rooftop Panels More than 50 photovoltaic rooftop panels (left and right of the center panels) produce 45 kilowatts of electricity ­ enough to provide roughly 9

  13. IT Town Hall December 5, 2013

    E-Print Network [OSTI]

    Maxwell, Bruce D.

    Network Analyst Jeff Kimm Network Analyst Brian Schoenrock Database Administrator Clint Sorensen Engineer Lyle Williams Accountant Cheryl McNicholas Windows System Administrator Patrick Baciu.montana.edu/loginsimplification Email Upgrade Network Core Upgrade Internet Connectivity Upgrades Voicemail Upgrade #12

  14. Project: Draper Hall Renovation Owner: Berea College

    E-Print Network [OSTI]

    Baltisberger, Jay H.

    source · Clerestory windows in classrooms for daylighting and passive solar heating · Occupancy sensors Architects, partnering with Steed Hammond Paul, designed and Messer Construction implemented the ecological in Architectural Design. · 52,000 ft.2 / 3 stories with carillon tower · Preservation of original slate roofing

  15. Stephen F. & Camilla T. Brauer Hall

    E-Print Network [OSTI]

    Subramanian, Venkat

    of paramount importance--alternative energy, environmental engineering and sustainable technology; biotechnology; nanotechnology; and information technology." " salvatore p. sutera, Ph.D., Dean & Senior, a cleaner environment, and better health care. It will house the Department of Energy, Environmental

  16. iPortal Town Hall Meeting

    Broader source: Energy.gov [DOE]

    To register for a course, please click here to log into the iPortal. Once logged in, click on iPortal Training icon located on the left-hand side of the screenFor all iPortal Collaboration training...

  17. APRIL 29, 2014 208 SCOATES HALL

    E-Print Network [OSTI]

    practices will be noted as well as those of others that squander strategic volumes of water and energy along food supply chains. Society must enable farmers to be good stewards of water. A first step Research Group Department of Geography King's College London Biological & Agricultural Engineering

  18. Spin hall effect in paramagnetic thin films 

    E-Print Network [OSTI]

    Xu, Huachun

    2009-05-15T23:59:59.000Z

    the principle of Light Emitting Diode, but changed the design to a coplanar structure with two p-n junctions. A Light-Emitting Diode [27] consists of a chip of semiconductor materials doped with impurities to create a p-n junction. When the LED is forward...

  19. Hall of Fame Athletes Reunite at Homecoming

    E-Print Network [OSTI]

    Qiu, Weigang

    College freshmanSteven Gordon, Barack Obama willneverhave toworryaboutfindinghis way home. That's because Gordon shows President Obama his winning new business idea, a tattoo ID, during a meeting,thankyouallforyoursupportandinspiration. In This Issue: Student Gives Obama a Tattoo 3 'Millionaire' Wins $12,500 3 Wexler Library, A Vision Renewed 4

  20. University/Intensive English Program Residence Hall

    E-Print Network [OSTI]

    Johnson Jr.,, Ray

    a las clases regularmente y que completen satisfactoriamente su trabajo asignado recibirán un enseñanza superior importante y que se encuentra, a la vez, a poca distancia en autobús de la ciudad de