National Library of Energy BETA

Sample records for hall student union

  1. SubTER Presentation at Town Hall- American Geophysical Union

    Broader source: Energy.gov [DOE]

    Subter, the Subsurface Crosscut at the Energy Department, conducted a Town Hall meeting to share information and create a dialogue regarding the grand challenges of energy production and storage in the subsurface.

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

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

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

  3. 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)

  4. ARM - Welcome to Study Hall

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

    govEducationWelcome to Study Hall Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Welcome to Study Hall FAQ_book2

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

    Energy Savers [EERE]

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

  6. 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...

  7. Fermilab Wilson Hall and Vicinity

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

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

  8. Fall 2007 American Geophysical Union Meeting Student Travel Support for Environmental Nanomaterials Session (#B35) (December 10-14, 2007)

    SciTech Connect (OSTI)

    Michael F. Hochella, Jr.

    2007-10-01

    The purpose of award no. DE-FG02-08ER15925 was to fund travel for students to present at the Fall 2007 American Geophysical Meeting. This was done successfully, and five students (Bin Xie, Qiaona Hu, Katie Schreiner, Daria Kibanova, and Frank-Andreas Weber) gave excellent oral and poster presentations at the meeting. Provided are the conference abstracts for their presentations.

  9. Mary Hall Salishan

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

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

  10. Jefferson Lab Experimental Hall D

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

    Information Hall D General Information Hall D Meetings Calendar (Regina) Hall D Civil - selected drawings (pdf) Hall D equipment location - selected drawings (pdf) Hall D Basic Equipment Description on Hall D Wiki JLab Experimental Schedule Schedule: ENP page the current schedule and the scheduling procedures Schedule: Accelerator page Run Information Current/latest run: Feb 5 - Apr 13 2016 Shift Schedule and Sign-Up Safety documents and training GlueX Collaboration Information Meetings:

  11. Agreement Type Union

    National Nuclear Security Administration (NNSA)

    Union of North America 872 14 International Union of Oprating Engineers (Maintenance Engineers) 501 22 Local Joint Executive Board of Las vegas Culinary Workers 226 49...

  12. Experimental Hall B | Jefferson Lab

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

    Experiemental Hall B A detector from Jefferson Lab's Experimental Hall B. A D D I T I O N A L L I N K S: Hall B Home Hall B Staff Public Interest CLAS Physics Publications 12 GeV Upgrade Detector Support Group top-right bottom-left-corner bottom-right-corner Experimental Hall B Jefferson Lab has four experimental halls. Hall B is the smallest of the experimental staging areas. It is 98 feet in diameter and 65 feet from floor to ceiling. Experiments that take data in Hall B employ beams of either

  13. Experimental Hall C | Jefferson Lab

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

    Experimental Hall C An overhead view of Jefferson Lab's experimental Hall C. A D D I T I O N A L L I N K S: Hall C Home Hall C Staff Public Interest CEBAF Status Experiments 12 GeV Upgrade top-right bottom-left-corner bottom-right-corner Experimental Hall C Jefferson Lab has four experimental halls. Hall C is 150 feet in diameter and 60 feet tall. Hall C houses a High Momentum Spectrometer and provides space for large-installation experiments. These are stand-alone experiments requiring unique

  14. Experimental Hall D | Jefferson Lab

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

    Hall D superconducting solenoid Hall D spectrometer is based on a superconducting solenoid. A D D I T I O N A L L I N K S: Hall D Home Hall D Staff CEBAF Status Publications Detector Support Group top-right bottom-left-corner bottom-right-corner Experimental Hall D Jefferson Lab's fourth experimental hall, known as Hall D, began receiving beam for calibration and commissioning purposes late in 2014. The Hall D complex consists of an extension to the accelerator tunnel to house a transport line

  15. 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.

  16. Hall A Annual Report 2013

    SciTech Connect (OSTI)

    Dalton, Mark M.

    2014-02-01

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

  17. 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."

  18. Jefferson Lab Experimental Hall B

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

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

  19. Enel Union Fenosa Renovables EUFER formerly Union Fenosa Energia...

    Open Energy Info (EERE)

    Fenosa Renovables EUFER formerly Union Fenosa Energia Especiales Jump to: navigation, search Name: Enel Union Fenosa Renovables (EUFER) (formerly Union Fenosa Energia Especiales)...

  20. Experimental Hall A | Jefferson Lab

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

    Hall A This photo shows one of the two High Resolution Spectrometers - a 450 ton particle detector assembly - in Jefferson Lab's Experimental Hall A. A D D I T I O N A L L I N K S: Hall A Home Technical Page Publications CEBAF Status Experiments 12 GeV Upgrade top-right bottom-left-corner bottom-right-corner Experimental Hall A Jefferson Lab has four experimental halls. Hall A is the largest of these four experimental staging areas. It is 174 feet across and 80 feet tall from the floor to the

  1. Directions to Wilson Hall, Fermilab

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

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

  2. Cylindrical geometry hall thruster

    DOE Patents [OSTI]

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

    2002-01-01

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

  3. QER- Comment of Addison Hall

    Broader source: Energy.gov [DOE]

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

  4. Anthony Kathryn Hall | Open Energy Information

    Open Energy Info (EERE)

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

  5. Agreement Type Union

    National Nuclear Security Administration (NNSA)

    Type Union Local #/Name Number of Employees Project Labor Agreement International Association of Heat and Frost Insulators and Allied Workers 135 2 International Brothehood of Boilermakers, Iron Ship Builders, Blacksmith Forgers and Helpers 92 0 International Union of Bricklayers & Allied Craftsmen 13 0 Regional Council of Carpenters 1780 & 1977 13 Operative Plasterers and Cement Mason International Association Operative Plasterers and Cement Mason International Association 1

  6. Union Valley | Department of Energy

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

    Union Valley Union Valley This document discusses Union Valley. Topics include: * The area's safety * Any use limitations for the area * History and cleanup background for this area * How DOE's cleanup program addressed the problem PDF icon Union Valley More Documents & Publications Melton Valley Watershed Groundwater Contamination and Treatment at Department of Energy Sites Groundwater Contamination and Treatment at Department of Energy Sites - 2008

  7. Science and Energy Town Hall

    Broader source: Energy.gov [DOE]

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

  8. Unions, LANL sign labor agreements

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

    Unions, LANL sign labor agreements Unions, LANL sign labor agreements The New Mexico Building and Construction Trades Council and Los Alamos National Security LLC, announced the signing of a series of labor agreements that affect nearly 750 construction and maintenance workers. September 21, 2012 Jay Johnson renews the contracts with the Laboratory's union workers. Jay Johnson (left) associate director for maintenance and infrastructure planning, renews the contracts with the Laboratory's union

  9. MEETINGS WITH UNION OFFICIALS | Department of Energy

    Energy Savers [EERE]

    MEETINGS WITH UNION OFFICIALS MEETINGS WITH UNION OFFICIALS Guidance as to how to handle requests from union officials to meet with Department officials so that there is no undue legal risk. PDF icon GC GUIDANCE ON MEETINGS WITH UNION OFFICIALS More Documents & Publications AFGE Local 928 MEETINGS WITH UNION OFFICIALS NETL AFGE 1995 MEETINGS WITH UNION OFFICIALS NETL AFGE 1104

  10. Jefferson Lab Experimental Hall C

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

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

  11. Town Hall meeting | OpenEI Community

    Open Energy Info (EERE)

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

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

    Energy Savers [EERE]

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

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

    SciTech Connect (OSTI)

    D. Egan

    2010-04-13

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

  14. Building Green in Greensburg: City Hall Building

    Broader source: Energy.gov [DOE]

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

  15. 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

  16. Spin Hall effects in metallic antiferromagnets - perspectives...

    Office of Scientific and Technical Information (OSTI)

    Title: Spin Hall effects in metallic antiferromagnets - perspectives for future spin-orbitronics Authors: Sklenar, Joseph 1 ; Zhang, Wei 2 ; Jungfleisch, Matthias B. 2 ; ...

  17. Hall-effect arc protector

    DOE Patents [OSTI]

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

    1997-05-13

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

  18. Town Hall with Secretary Moniz

    ScienceCinema (OSTI)

    Energy Secretary Ernest Moniz; Deputy Secretary of Energy Daniel Poneman

    2013-07-25

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

  19. Hall-effect arc protector

    DOE Patents [OSTI]

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

    1997-01-01

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

  20. Unions, LANL sign labor agreements

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

    the contracts with the Laboratory's union workers. To the right of Johnson are Ray Baca of the New Mexico Building and Construction Trades Council and Tim Babicke and Gerard...

  1. Students--

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

    , 2015 Students-- All current students pursuing a degree (with the exception of High School Co-ops) are required to submit official transcripts to the Student Programs' Office...

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

    Office of Scientific and Technical Information (OSTI)

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

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

    Office of Scientific and Technical Information (OSTI)

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

  4. Microscopic theory of quantum anomalous Hall effect in graphene...

    Office of Scientific and Technical Information (OSTI)

    Microscopic theory of quantum anomalous Hall effect in graphene Citation Details In-Document Search Title: Microscopic theory of quantum anomalous Hall effect in graphene Authors: ...

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

    Energy Savers [EERE]

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

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

    Open Energy Info (EERE)

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

  7. GC GUIDANCE ON MEETINGS WITH UNION OFFICIALS

    Office of Environmental Management (EM)

    MEETINGS WITH UNION OFFICIALS Department officials often receive requests to meet with officials of labor unions whose members are employees of Department contractors. Department officials should feel free to meet with such union officials subject to this guidance. Department officials must take care, however, not to insert themselves or the government inappropriately into the relationship between the unions and the contractors Sometimes unions will wish to meet with Department officials simply

  8. FORT UNION DEEP

    SciTech Connect (OSTI)

    Lyle A. Johnson Jr.

    2002-03-01

    Coalbed methane (CBM) is currently the hottest area of energy development in the Rocky Mountain area. The Powder River Basin (PRB) is the largest CBM area in Wyoming and has attracted the majority of the attention because of its high permeability and relatively shallow depth. Other Wyoming coal regions are also being targeted for development, but most of these areas have lower permeability and deeper coal seams. This project consists of the development of a CBM stimulation system for deep coal resources and involves three work areas: (1) Well Placement, (2) Well Stimulation, and (3) Production Monitoring and Evaluation. The focus of this project is the Washakie Basin. Timberline Energy, Inc., the cosponsor, has a project area in southern Carbon County, Wyoming, and northern Moffat County, Colorado. The target coal is found near the top of the lower Fort Union formation. The well for this project, Evans No.1, was drilled to a depth of 2,700 ft. Three coal seams were encountered with sandstone and some interbedded shale between seams. Well logs indicated that the coal seams and the sandstone contained gas. For the testing, the upper seam at 2,000 ft was selected. The well, drilled and completed for this project, produced very little water and only occasional burps of methane. To enhance the well, a mild severity fracture was conducted to fracture the coal seam and not the adjacent sandstone. Fracturing data indicated a fracture half-length of 34 ft, a coal permeability of 0.2226 md, and permeability of 15.3 md. Following fracturing, the gas production rate stabilized at 10 Mscf/day within water production of 18 bpd. The Western Research Institute (WRI) CBM model was used to design a 14-day stimulation cycle followed by a 30-day production period. A maximum injection pressure of 1,200 psig to remain well below the fracture pressure was selected. Model predictions were 20 Mscf/day of air injection for 14 days, a one-day shut-in, then flowback. The predicted flowback was a four-fold increase over the prestimulation rate with production essentially returning to prestimulation rates after 30 days. The physical stimulation was conducted over a 14-day period. Problems with the stimulation injection resulted in a coal bed fire that was quickly quenched when production was resumed. The poststimulation, stabilized production was three to four times the prestimulation rate. The methane content was approximately 45% after one day and increased to 65% at the end of 30 days. The gas production rate was still two and one-half times the prestimulation rate at the end of the 30-day test period. The field results were a good match to the numerical simulator predictions. The physical stimulation did increase the production, but did not produce a commercial rate.

  9. FORT UNION DEEP

    SciTech Connect (OSTI)

    Lyle A. Johnson Jr.

    2002-09-01

    Coalbed methane (CBM) is currently the hottest area of energy development in the Rocky Mountain area. The Powder River Basin (PRB) is the largest CBM area in Wyoming and has attracted the majority of the attention because of its high permeability and relatively shallow depth. Other Wyoming coal regions are also being targeted for development, but most of these areas have lower permeability and deeper coal seams. This project consists of the development of a CBM stimulation system for deep coal resources and involves three work areas: (1) Well Placement, (2) Well Stimulation, and (3) Production Monitoring and Evaluation. The focus of this project is the Washakie Basin. Timberline Energy, Inc., the cosponsor, has a project area in southern Carbon County, Wyoming, and northern Moffat County, Colorado. The target coal is found near the top of the lower Fort Union formation. The well for this project, Evans No.1, was drilled to a depth of 2,700 ft. Three coal seams were encountered with sandstone and some interbedded shale between seams. Well logs indicated that the coal seams and the sandstone contained gas. For the testing, the upper seam at 2,000 ft was selected. The well, drilled and completed for this project, produced very little water and only occasional burps of methane. To enhance the well, a mild severity fracture was conducted to fracture the coal seam and not the adjacent sandstone. Fracturing data indicated a fracture half-length of 34 ft, a coal permeability of 0.2226 md, and permeability of 15.3 md. Following fracturing, the gas production rate stabilized at 10 Mscf/day within water production of 18 bpd. The Western Research Institute (WRI) CBM model was used to design a 14-day stimulation cycle followed by a 30-day production period. A maximum injection pressure of 1,200 psig to remain well below the fracture pressure was selected. Model predictions were 20 Mscf/day of air injection for 14 days, a one-day shut-in, then flowback. The predicted flowback was a four-fold increase over the prestimulation rate with production essentially returning to prestimulation rates after 30 days. The physical stimulation was conducted over a 14-day period. Problems with the stimulation injection resulted in a coal bed fire that was quickly quenched when production was resumed. The poststimulation, stabilized production was three to four times the prestimulation rate. The methane content was approximately 45% after one day and increased to 65% at the end of 30 days. The gas production rate was still two and one-half times the prestimulation rate at the end of the 30-day test period. The field results were a good match to the numerical simulator predictions. The physical stimulation did increase the production, but did not produce a commercial rate.

  10. Secretary Chu to Tour Sandia National Laboratories and Highlight...

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

    also host a State of the Union Town Hall with students at the University of New Mexico. ... State of the Union Town Hall at University of New Mexico WHO: Energy Secretary Steven Chu ...

  11. 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...

  12. OpenEI Community - Town Hall meeting

    Open Energy Info (EERE)

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

  13. International Union for Conservation of Nature | Open Energy...

    Open Energy Info (EERE)

    Union for Conservation of Nature Jump to: navigation, search Logo: International Union for Conservation of Nature Name: International Union for Conservation of Nature Address: Rue...

  14. Agro Unione Ltda | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Agro Unione Ltda Place: Brazil Product: Sugar and ethanol producer. References: Agro Unione Ltda1 This article is a stub. You can help OpenEI...

  15. Students--

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

    , 2015 Students-- All current students pursuing a degree (with the exception of High School Co-ops) are required to submit official transcripts to the Student Programs' Office yearly. Students, who are on a semester system, have a submission deadline of February 27, 2015. Students, who are on a quarter system, have a submission deadline of April 30, 2015. Transcripts should include all course work to-date and Spring, 2015 enrollment. If your school has the ability to send electronic official

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

    Broader source: Energy.gov [DOE]

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

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

    Office of Scientific and Technical Information (OSTI)

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

  18. Spring 2015 Henderson Hall Education and Career Fair

    Broader source: Energy.gov [DOE]

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

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

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

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

  20. Lecture & Dining Halls - Combustion Energy Frontier Research Center

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

    FAQ » Lecture & Dining Halls Lecture & Dining Halls Lecture Halls: Friend Center See Schedule of Events for schedule and location of lectures. How far are the lecture halls from the dormitories? Friend Center is a quick 10 minute walk from the Butler dormitories. See campus map for walking directions. There is also a free campus shuttle that will take you from outside the Icahn Lab on Washington Road to the Friend Center. See

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

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

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

  2. Students

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

    Adam Sayre, Undergraduate Matt Brown, Student Benefits You Get Rewards, recognition, health and wellness benefits, tax savings...these are just some of the things that can...

  3. Newmark-Hall synthetic history development

    SciTech Connect (OSTI)

    Aramayo, G.A.

    1990-11-01

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

  4. Fractional Quantization of the Hall Effect

    DOE R&D Accomplishments [OSTI]

    Laughlin, R. B.

    1984-02-27

    The Fractional Quantum Hall Effect is caused by the condensation of a two-dimensional electron gas in a strong magnetic field into a new type of macroscopic ground state, the elementary excitations of which are fermions of charge 1/m, where m is an odd integer. A mathematical description is presented.

  5. Union Eolica Panamena UEP | Open Energy Information

    Open Energy Info (EERE)

    Eolica Panamena UEP Jump to: navigation, search Name: Union Eolica Panamena (UEP) Place: Granada, Spain Sector: Wind energy Product: Granada-based wind project developer company,...

  6. June 11, 2009, HSS/Union Task Meeting on 2009 HSS/Union Task Progress - Agenda

    Office of Environmental Management (EM)

    06-05-09 HSS/Union Working Group Meeting June 11, 2009 1:00 - 2:30 pm EST FORS 7E-069 Call-in: 301-903-0688 SUBJECT: 2009 HSS/Union Task Progress Union Working Group Participants: 2008 Topical Union Leads Ron Ault/Tom Schaffer..................AFL-CIO Metal Trades Department Pete Stafford...................................... Building and Construction Trades Department Center for Construction Research & Training (BCTD CPWR) Chico McGill/Dennis Phelps............International Brotherhood of

  7. June 11, 2009, HSS/Union Task Meeting on 2009 HSS/Union Task Progress - Summary

    Office of Environmental Management (EM)

    23-09 HSS/Union Working Group Meeting 2009 HSS/Union Task Progress and Next Steps June 11, 2009 In introductory remarks, Glenn Podonsky, Chief Health, Safety and Security Officer, underscored HSS's commitment to engage in this collective effort with the Unions and stakeholders to improve worker health, safety and security across the DOE Complex. He provided an overview of the past several years of the HSS Focus Group effort in which the worker, through Union representatives and stakeholders,

  8. union publique HR

    ScienceCinema (OSTI)

    None

    2011-10-06

    Chers Collègues,Je me permets de vous rappeler qu'une réunion publique organisée par le Département HR se tiendra aujourd'hui:Vendredi 30 avril 2010 à 9h30 dans l'Amphithéâtre principal (café offert dès 9h00).Durant cette réunion, des informations générales seront données sur:le CERN Admin e-guide, qui est un nouveau guide des procédures administratives du CERN ayant pour but de faciliter la recherche d'informations pratiques et d'offrir un format de lecture convivial;le régime d'Assurance Maladie de l'Organisation (présentation effectuée par Philippe Charpentier, Président du CHIS Board) et;la Caisse de Pensions (présentation effectuée par Théodore Economou, Administrateur de la Caisse de Pensions du CERN).Une transmission simultanée de cette réunion sera assurée dans l'Amphithéâtre BE de Prévessin et également disponible à l'adresse suivante: http://webcast.cern.chJe me réjouis de votre participation!Meilleures salutations,Anne-Sylvie CatherinChef du Département des Ressources humaines__________________________________________________________________________________Dear Colleagues,I should like to remind you that a plublic meeting organised by HR Department will be held today:Friday 30 April 2010 at 9:30 am in the Main Auditorium (coffee from 9:00 am).During this meeting, general information will be given about:the CERN Admin e-guide which is a new guide to the Organization's administrative procedures, drawn up to facilitate the retrieval of practical information and to offer a user-friendly format;the CERN Health Insurance System (presentation by Philippe Charpentier, President of the CHIS Board) and;the Pension Fund (presentation by Theodore Economou, Administrator of the CERN Pension Fund).A simultaneous transmission of this meeting will be broadcast in the BE Auditorium at Prévessin and will also be available at the following address. http://webcast.cern.chI look forward to your participation!Best regards,Anne-Sylvie CatherinHead, Human Resources Department

  9. Advisory Board Seats New Student Representatives

    Broader source: Energy.gov [DOE]

    The Oak Ridge Site Specific Advisory Board (ORSSAB) welcomed two new student representatives at its May meeting. Gracie Hall and Julia Riley will serve on the board through April 2014.

  10. Second Generation Fractional Quantum Hall Effect

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

    Generation Fractional Quantum Hall Effect - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Fuel Cycle Defense Waste Management

  11. Hypernuclei in Hall C | Jefferson Lab

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

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

  12. Forest County Potawatomi Community Wundar Hall Project

    Office of Environmental Management (EM)

    Wundar Hall Project Department of Energy Tribal Energy Program Review October 27, 2010 Mercedes E. Vega Legal Office Administrator Forest County Potawatomi Community 2 Background on Forest County Potawatomi Community  FCPC has trust land in northern Wisconsin and the City of Milwaukee.  Facilities include tribal government offices, a health and wellness center, a cultural museum, a former college campus, a hotel, two casinos and various other smaller support facilities and enterprises. 3

  13. The Honorable Edward Rendell City Hall

    Office of Legacy Management (LM)

    ' ,Department of Energy ' , Washington, DC 20585 The Honorable Edward Rendell City Hall Philadelphia, Pennsylvania 19107 Dear'MayorRendell: ,, _, Secretary of Energy Hazel O'Leary has announced a new approach to openness.in the Department of Energy (DOE) and its communicatiohs with the public. In support of this initiative, we'are pleased to forward the enclosed information 'related to the formerMinneapolis-Honeywell Regulator Co. site in your jurisdiction that performed work for DOE or its

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

    Office of Legacy Management (LM)

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

  15. Union Temporal de Empresas UTE | Open Energy Information

    Open Energy Info (EERE)

    Temporal de Empresas UTE Jump to: navigation, search Name: Union Temporal de Empresas (UTE) Place: Spain Sector: Solar Product: Developer of PV solar parks. References: Union...

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

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

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

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

    Office of Scientific and Technical Information (OSTI)

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

  18. Town Hall with Secretary Moniz | Department of Energy

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

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

  19. OSDBU Federal Contracting Town Hall Meeting | Department of Energy

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

    OSDBU Federal Contracting Town Hall Meeting OSDBU Federal Contracting Town Hall Meeting John Hale III pictured 4th from the left. Susan Au Allen pictured in the center. John Hale III pictured 4th from the left. Susan Au Allen pictured in the center. In June of 2015, John Hale III, Director of the Office of Small and Disadvantaged Business Utilization, served as the moderator for the Federal Contracting Town Hall Meeting during the CelebrAsian procurement conference; the largest procurement

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

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

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

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

    Open Energy Info (EERE)

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

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

    SciTech Connect (OSTI)

    Not Available

    2010-09-01

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

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

    Broader source: Energy.gov [DOE]

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

  4. Secretary Moniz Leads DOE Town Hall | Department of Energy

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

    Leads DOE Town Hall Secretary Moniz Leads DOE Town Hall May 22, 2013 - 6:30pm Addthis Secretary Moniz and Deputy Secretary Poneman address questions from Department of Energy employees in a town hall. Erin R. Pierce Erin R. Pierce Former Digital Communications Specialist, Office of Public Affairs Secretary Moniz: Week One Watch the swearing-in ceremony. See a video recap of Secretary Moniz's first day in office. View a slideshow of photos from the DOE Town Hall. "I have a lot of hope and

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

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

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

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

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

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

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

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

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

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

    Office of Scientific and Technical Information (OSTI)

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

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

    Open Energy Info (EERE)

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

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

    Open Energy Info (EERE)

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

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

    SciTech Connect (OSTI)

    Not Available

    2010-04-01

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

  12. AVIC Changli Union Energy | Open Energy Information

    Open Energy Info (EERE)

    Beijing Municipality, China Product: China-based JV to manufacture and sell zinc-air batteries. References: AVIC Changli Union Energy1 This article is a stub. You can help...

  13. Union, Ohio: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    is a stub. You can help OpenEI by expanding it. Union is a city in Miami County and Montgomery County, Ohio. It falls under Ohio's 8th congressional district and Ohio's 3rd...

  14. Union of Concerned Scientists | Open Energy Information

    Open Energy Info (EERE)

    http:www.ucsusa.org About "The Union of Concerned Scientists is the leading science-based nonprofit working for a healthy environment and a safer world. UCS combines...

  15. Segmented electrode hall thruster with reduced plume

    DOE Patents [OSTI]

    Fisch, Nathaniel J.; Raitses, Yevgeny

    2004-08-17

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

  16. Jefferson Lab Experimental Hall D: Staff

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

    Staff NAME OFFICE PHONE PAGER ORG E-MAIL Additional Information Hall D Group Leader Eugene Chudakov 12_1/A111 6959 PHALLD gen@jlab.org Scientific Staff Mark Dalton 12/A121 6931 PHALLD dalton@jlab.org Alexandre Deur 12/A109 7526 PHALLD deurpam@jlab.org Hovanes Egiyan 12/A119 5356 PHALLD hovanes@jlab.org Sergey Furletov 12/A102 5332 PHALLD furletov@jlab.org Mark Ito 12/A104 5295 PHALLD marki@jlab.org David Lawrence 12/A105 5567 PHALLD davidl@jlab.org Lubomir Pentchev 12/A115 5310 PHALLD

  17. Lees-Kubota Lecture Hall, Guggenheim 101

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

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

  18. Undulator Hall Air Temperature Fault Scenarios

    SciTech Connect (OSTI)

    Sevilla, J.; Welch, J.; ,

    2010-11-17

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

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

    SciTech Connect (OSTI)

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

    2012-05-15

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

  20. Pair spectrometer hodoscope for Hall D at Jefferson Lab

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

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

    2015-09-21

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

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

    Office of Scientific and Technical Information (OSTI)

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

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

    Office of Scientific and Technical Information (OSTI)

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

  3. Secretary Chu to Visit Houston to Highlight Obama's State of...

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

    tour a recently completed major energy efficiency upgrade at the Texas Medical Center, and host a State of the Union Town Hall with students from Houston Community College. ...

  4. Spin Hall magnetoresistance at high temperatures

    SciTech Connect (OSTI)

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

    2015-02-02

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

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

    Office of Environmental Management (EM)

    Missed the Town Hall with Secretary Chu? Missed the Town Hall with Secretary Chu? January 31, 2011 - 11:40am Addthis Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs Editor's Note: This entry has been cross-posted from DOE's Energy Blog. We have the video of the online town hall event with Secretary Chu up and ready for your viewing. Check it out below. During the event, Secretary Chu highlighted several parts of the President Obama's clean energy and

  6. Clay-Union Electric Coop | Open Energy Information

    Open Energy Info (EERE)

    Clay-Union Electric Coop Jump to: navigation, search Name: Clay-Union Electric Coop Place: South Dakota Phone Number: 605-624-2673 Website: www.clayunionelectric.coop Facebook:...

  7. EERE Success Story-Iowa: West Union Green Transformation Project...

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

    West Union Green Transformation Project EERE Success Story-Iowa: West Union Green ... These grant funds will be used to close up their buildings-making them more energy ...

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

    Open Energy Info (EERE)

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

  9. Public invited to LANL-sponsored Energy Town Hall

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

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

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

    Office of Scientific and Technical Information (OSTI)

    Hall states in graphene via metal-atom adsorption: An ab-initio study Authors: Ding, Jun ; Qiao, Zhenhua ; Feng, Wanxiang ; Yao, Yugui ; Niu, Qian Publication Date: 2011-11-15...

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

    Office of Scientific and Technical Information (OSTI)

    Title: Fractional quantum spin Hall effect in flat-band checkerboard lattice model Authors: Li, Wei ; Sheng, D. N. ; Ting, C. S. ; Chen, Yan Publication Date: 2014-08-04 OSTI ...

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

    Open Energy Info (EERE)

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

  13. 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...

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

    Office of Scientific and Technical Information (OSTI)

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

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

    Office of Scientific and Technical Information (OSTI)

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

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

    Office of Scientific and Technical Information (OSTI)

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

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

    Energy Savers [EERE]

    America's Top Innovations Propel the Home Building Industry toward Higher Performance | Department of Energy 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 Profile - Building America's Top Innovations Propel the Home Building Industry toward Higher Performance This Building America Innovations profile describes the concept for the U.S. Department of Energy

  18. U.S.-European Union Joint Statement | Department of Energy

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

    -European Union Joint Statement U.S.-European Union Joint Statement U.S.-European Union Joint Statement prepared as part of the International Partnership for a Hydrogen Economy PDF icon us_eu_hydrogen_summit_statement.pdf More Documents & Publications Microsoft Word - Document1 International Partnerships for the Hydrogen Economy Fact Sheet International Partnerships for the Hydrogen Economy Fact Sheet

  19. US - Former Soviet Union environmental management activities

    SciTech Connect (OSTI)

    1995-09-01

    The Office of Environmental Management (EM) has been delegated the responsibility for US DOE`s cleanup of nuclear weapons complex. The nature and the magnitude of the waste management and environmental remediation problem requires the identification of technologies and scientific expertise from domestic and foreign sources. This booklet makes comparisons and describes coordinated projects and workshops between the USA and the former Soviet Union.

  20. Conversion and enrichment in the Soviet Union

    SciTech Connect (OSTI)

    1991-04-01

    In the Soviet Union, just as in the West, the civilian nuclear industry emerged from research work undertaken for nuclear weapons development. At first, researchers tried various techniques for physical separation of uranium isotopes: electromagnetic and molecular-kinetic thermo-diffusion methods; gaseous diffusion; and centrifuge methods. All of those methods, which are based primarily on differences in the atomic mass of uranium isotopes, called for extensive research and the development of new, technically unprecedented equipment. Gradually gaseous diffusion and gas centrifuge technology became recognized as most feasible for industrial use, so research on other methods was terminated. Industrial-scale uranium enrichment in the Soviet Union began in 1949 using the gaseous diffusion method; by the early 1960s, centrifuge technology was in use on an industrial scale. All Soviet production of highly-enriched, weapons-grade uranium was halted in 1987. The Soviet Union now has four enrichment plants in operation (at classified locations), solely for civilian nuclear power needs. All four enrichment plants have centrifuge modules, and enrichment provided by gaseous diffusion accounts for less than 5% of their total output. Two of the four enrichment plants also incorporate facilities for conversion to uranium hexafluoride (UF{sub 6}).

  1. Stability of Hall equilibria in neutron star crusts

    SciTech Connect (OSTI)

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

    2014-12-01

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

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

    SciTech Connect (OSTI)

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

    2013-05-15

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

  3. On the question of hysteresis in Hall magnetohydrodynamic reconnection

    SciTech Connect (OSTI)

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

    2010-11-15

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

  4. Reconnection events in two-dimensional Hall magnetohydrodynamic turbulence

    SciTech Connect (OSTI)

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

    2012-09-15

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

  5. Admittance of multiterminal quantum Hall conductors at kilohertz frequencies

    SciTech Connect (OSTI)

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

    2014-03-28

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

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

    SciTech Connect (OSTI)

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

    2010-11-15

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

  7. Nanoconstriction-based spin-Hall nano-oscillator

    SciTech Connect (OSTI)

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

    2014-10-27

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

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

    SciTech Connect (OSTI)

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

    2015-06-01

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

  9. Microsoft Word - Town-Hall-meeting_notes_090215.docx

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

    Group Town Hall meeting, 09/02/2015 Location: Iran Thomas Auditorium, SNS site, ORNL, during the 2015 CNMS User Meeting. Meeting was called to order at 15:35 by Nazanin Bassiri-Gharb, UEC Chair with approximately 100 User Meeting attendees present. -- See accompanying slides on pp. 3-30 of this document -- * Nazanin began by introducing all the UEC members present at the Town Hall meeting * She then led a discussion of the UEC roles including issues such as capital equipment purchases * There

  10. Quantum anomalous Hall effect in topological insulator memory

    SciTech Connect (OSTI)

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

    2015-05-07

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

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

    Broader source: Energy.gov [DOE]

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

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

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

    After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green EECBG Success Story: After 105 Years, Historic City Hall in West Des Moines, Iowa Goes Green May 9, 2011 -...

  13. President Obama's Final State of the Union - Energy Department Supercut |

    Energy Savers [EERE]

    Department of Energy President Obama's Final State of the Union - Energy Department Supercut President Obama's Final State of the Union - Energy Department Supercut Addthis From climate change to wind and solar power to electric vehicles, President Obama touched on a lot of key energy topics in his final State of the Union address. He mentioned how the United States has cut carbon pollution more than any other country on earth and the fact that clean energy is cheaper than ever before.

  14. Deputy Secretary Roundtable Meeting with Unions | Department of Energy

    Office of Environmental Management (EM)

    Deputy Secretary Roundtable Meeting with Unions Deputy Secretary Roundtable Meeting with Unions Meeting Date: March 16, 2010 Documents Available for Download PDF icon Meeting Agenda PDF icon Meeting Summary PDF icon Safety and Security Reform Plan PDF icon Union Contact List More Documents & Publications Technical Standards Newsletter - December 2008 DOE Safety and Security Reform Meeting Active DPF for Off-Road Particulate Matter (PM) Control

  15. The City of Union City | Open Energy Information

    Open Energy Info (EERE)

    Sector Wind energy Facility Type Community Wind Facility Status In Service Owner Performance Services Energy Purchaser AEP - Indiana Michigan Power Location Union City IL...

  16. Union County, Ohio: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Places in Union County, Ohio Dublin, Ohio Magnetic Springs, Ohio Marysville, Ohio Milford Center, Ohio Plain City, Ohio Richwood, Ohio Unionville Center, Ohio Retrieved from...

  17. Kraftwerk Union KWU Siemens Power Generation | Open Energy Information

    Open Energy Info (EERE)

    Services Product: KWU is a provider of components and services to the commercial nuclear utility industry. References: Kraftwerk Union (KWU) - Siemens Power Generation.1...

  18. Illustrative Scenarios Tool (European Union) | Open Energy Information

    Open Energy Info (EERE)

    Summary LAUNCH TOOL Name: Illustrative Scenarios Tool (European Union) Focus Area: Propane Topics: Opportunity Assessment & Screening Website: www.eutransportghg2050.eucms...

  19. High Temperature Fuel Cells in the European Union

    Broader source: Energy.gov [DOE]

    Presentation on High Temperature Fuel Cells in the European Union to the High Temperature Membrane Working Group, May 25, 2004 in Philadelphia, PA.

  20. Union County, South Carolina: Energy Resources | Open Energy...

    Open Energy Info (EERE)

    Carlisle, South Carolina Jonesville, South Carolina Lockhart, South Carolina Monarch Mill, South Carolina Union, South Carolina Retrieved from "http:en.openei.orgw...

  1. Union County, Illinois: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Pass, Illinois Anna, Illinois Cobden, Illinois Dongola, Illinois Jonesboro, Illinois Mill Creek, Illinois Retrieved from "http:en.openei.orgwindex.php?titleUnionCounty,Il...

  2. Union County, Florida: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Climate Zone Number 2 Climate Zone Subtype A. Places in Union County, Florida Lake Butler, Florida Raiford, Florida Worthington Springs, Florida Retrieved from "http:...

  3. Union Bridge, Maryland: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Union Bridge, Maryland: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 39.5689895, -77.176927 Show Map Loading map... "minzoom":false,"mapping...

  4. West Union, New York: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    "alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":"" Hide Map West Union is a town in Steuben County, New York.1 References US Census Bureau...

  5. New Mars rover findings revealed at American Geophysical Union...

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

    Mars rover findings revealed at AGU conference New Mars rover findings revealed at American Geophysical Union conference A group of scientists revealed that the Curiosity rover...

  6. Union County, Arkansas: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Number 3 Climate Zone Subtype A. Places in Union County, Arkansas Calion, Arkansas El Dorado, Arkansas Felsenthal, Arkansas Huttig, Arkansas Junction City, Arkansas Norphlet,...

  7. Union County, New Jersey: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    New Jersey Strategic Energy LLC (New Jersey) Places in Union County, New Jersey Berkeley Heights, New Jersey Clark, New Jersey Cranford, New Jersey Elizabeth, New Jersey...

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

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

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

  9. December 4, 2008; HSS/Union Working Group Meeting on 2008 HSS/Union Topical Wrap Up - Agenda

    Office of Environmental Management (EM)

    Union Working Group Meeting December 4, 2008 1:00 - 4:00 pm EST FORS 7E-069 SUBJECT: 2008 HSS/Union Topical Wrap Up Meeting Facilitation by 2008 Topical Union Leads Ron Ault/Tom Schaffer............... AFL-CIO Metal Trades Department Pete Stafford/Patricia Quinn/.............Building and Construction Trades Department Center for Don Ellenberger Construction Research & Training (BCTD CPWR) Dennis Phelps.............................International Brotherhood of Electrical Workers [IBEW] Gary

  10. DOE Roundtable Meeting with Union Leaders | Department of Energy

    Office of Environmental Management (EM)

    Roundtable Meeting with Union Leaders DOE Roundtable Meeting with Union Leaders Meeting Date: January 25, 2011 Documents Available for Download PDF icon Meeting Agenda PDF icon Meeting Summary and Participants More Documents & Publications DOE/Labor Leadership Roundtable Meeting DOE/Labor Leadership Roundtable Meeting

  11. December 4, 2008; HSS/Union Working Group Meeting on 2008 HSS/Union Topical Wrap Up - Union Lead Action Priorities

    Office of Environmental Management (EM)

    UNION TOPICAL LEAD PRIORITY ACTION SUBMITTALS FOR DECEMBER 4 HSS/UNION TOPICAL WRAP UP MEETING SMWIA Submittal of Action Priorities: The priorities below reflect SMWIA/training subcommittee input for moving forward in 2009 and beyond. 1. A pre-requisite requirement of OSHA-10 Hour Training for workers to gain access to DOE sites 2. Standardized training requirements across the DOE network of facilities supported by the NIEHS model for support for all building trades and sub crafts 3. Support for

  12. Physics of Accelerators and Related Technology for International Students (PARTI).

    Broader source: Energy.gov [DOE]

    Fermilab's PARTI program offers ten-week summer internships to students from universities in the former Soviet Union majoring in physics and engineering. These internships offer a chance for...

  13. State of the Union 2015: President Obama's Remarks on Energy | Department

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

    of Energy State of the Union 2015: President Obama's Remarks on Energy State of the Union 2015: President Obama's Remarks on Energy

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

    SciTech Connect (OSTI)

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

    2013-05-15

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

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

    SciTech Connect (OSTI)

    Jiang, Xiaodong

    2013-10-01

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

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

    SciTech Connect (OSTI)

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

    2009-04-24

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

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

    SciTech Connect (OSTI)

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

    2015-05-04

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

  18. Fractionally charged skyrmions in fractional quantum Hall effect

    SciTech Connect (OSTI)

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

    2015-11-26

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

  19. Quasiparticle Aggregation in the Fractional Quantum Hall Effect

    DOE R&D Accomplishments [OSTI]

    Laughlin, R. B.

    1984-10-10

    Quasiparticles in the Fractional Quantum Hall Effect behave qualitatively like electrons confined to the lowest landau level, and can do everything electrons can do, including condense into second generation Fractional Quantum Hall ground states. I review in this paper the reasoning leading to variational wavefunctions for ground state and quasiparticles in the 1/3 effect. I then show how two-quasiparticle eigenstates are uniquely determined from symmetry, and how this leads in a natural way to variational wavefunctions for composite states which have the correct densities (2/5, 2/7, ...). I show in the process that the boson, anyon and fermion representations for the quasiparticles used by Haldane, Halperin, and me are all equivalent. I demonstrate a simple way to derive Halperin`s multiple-valued quasiparticle wavefunction from the correct single-valued electron wavefunction. (auth)

  20. Gradient instabilities of electromagnetic waves in Hall thruster plasma

    SciTech Connect (OSTI)

    Tomilin, Dmitry

    2013-04-15

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

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

    Office of Scientific and Technical Information (OSTI)

    Robert B. Laughlin and the Fractional Quantum Hall Effect Resources with Additional Information Robert B. Laughlin Photo Courtesy of LLNL Robert B. Laughlin shared the 1998 Nobel Prize in Physics with Horst L. Störmer and Daniel C. Tsui for 'their discovery of a new form of quantum fluid with fractionally charged excitations'. ' ... [I]n 1982 ... Störmer and Tsui discovered the effect. In 1983, Laughlin, then at the Lawrence Livermore National Laboratory, provided the theoretical explanation

  2. Transition in Electron Transport in a Cylindrical Hall Thruster

    SciTech Connect (OSTI)

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

    2010-06-02

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

  3. NE-24 Gilman Hall, University of California, Certification Documentation

    Office of Legacy Management (LM)

    Gilman Hall, University of California, Certification Documentation Berkeley, California, Conditional Verlette Gatlin, MA-232 I am attaching for entry into the Public Document Room, two copies of the subject documentation. These documents are the backup data for the conditional certification that the site is radiologically acceptable for restricted use as noted in the certification statement published in the Federal Register. Inasmuch as the conditional certification is made public through the

  4. Forest County Potawatomi Community Parking Ramp and Wundar Hall Projects

    Office of Environmental Management (EM)

    Tribal Energy Program Review Forest County Potawatomi Community Parking Ramp and Wundar Hall Projects Background on Forest County Potawatomi Community  FCPC has trust land in northern Wisconsin and City of Milwaukee  Facilities in northern Wisconsin include tribal government offices, a health and wellness center, a cultural museum, a casino and hotel and various other smaller support facilities and enterprises. Trust Land in Milwaukee Project Greenfire  In late 2007, FCPC established

  5. Cogeneration in the former Soviet Union

    SciTech Connect (OSTI)

    Horak, W.C.

    1997-07-01

    The former Soviet Union made a major commitment to Cogeneration. The scale and nature of this commitment created a system conceptually different from Cogeneration in the west. The differences were both in scale, in political commitment, and in socio economic impact. This paper addresses some of the largest scale Cogeneration programs, the technology, and the residual impact of these programs. The integration of the Cogeneration and nuclear programs is a key focus of the paper. Soviet designed nuclear power plants were designed to produce both electricity and heat for residential and industrial uses. Energy systems used to implement this design approach are discussed. The significant dependence on these units for heat created an urgent need for continued operation during the winter. Electricity and heat are also produced in nuclear weapons production facilities, as well as power plants. The Soviets also had designed, and initiated construction of a number of nuclear power plants {open_quotes}ATETs{close_quotes} optimized for production of heat as well as electricity. These were canceled.

  6. Union job fight boiling at DOE cleanup sites

    SciTech Connect (OSTI)

    Setzer, S.W.

    1993-11-15

    The US DOE is facing a growing jurisdictional dispute over which unions will perform the majority of clean-up work at its facilities. Unions affiliated with the AFL-CIO Metal Trades Council representing operations employees at the sites believe they have a fundamental right to work. Unions in the AFL-CIO's Building and Construction Trades Dept. insist that they have a clear mandate under federal labor law and the Davis-Bacon Act. The issue has heated up in recent weeks at the policy level and is boiling in a contentious dispute at DOE's Fernald site in Ohio.

  7. Iowa: West Union Green Transformation Project | Department of Energy

    Office of Environmental Management (EM)

    West Union Green Transformation Project Iowa: West Union Green Transformation Project March 17, 2014 - 11:26am Addthis Utilizing funding from EERE and cost shares from other federal agencies, the City of West Union, Iowa, drilled geothermal wells in order to install a closed-loop geothermal heating and cooling system. The system is designed to serve 330,000 square feet of mixed used space in the downtown area, including 80% of the 60 downtown buildings. Funds have also been allocated to provide

  8. Iowa: West Union Green Transformation Project | Department of Energy

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

    West Union Green Transformation Project Iowa: West Union Green Transformation Project March 17, 2014 - 11:26am Addthis Utilizing funding from EERE and cost shares from other federal agencies, the City of West Union, Iowa, drilled geothermal wells in order to install a closed-loop geothermal heating and cooling system. The system is designed to serve 330,000 square feet of mixed used space in the downtown area, including 80% of the 60 downtown buildings. Funds have also been allocated to provide

  9. UNION CARBIDE MZALS DIVISION tiiAGARA FALLS, NEW YDRK

    Office of Legacy Management (LM)

    PRELIF",INARY SURVEY 0' ELECTRDMET iORPDF.&TiCIN UNION CARBIDE MZALS DIVISION tiiAGARA FALLS, NEW YDRK Work performed by the Health and Safety Research Division Dak Ridge National Laboratory Oak Ridge, Tennessee 37830 OAK RIDGE NATIONAL LABORATORY operated by UNION CARBIDE CORPORATION for the DEPARTMENT OF ENERGY as part of the Fornierly Utilized Sites-- Remedial Action Program ,ELECTRD?'ISi 60RPOR:TION UNiON CARBIDE METALS DIVlSIOti NiASARA FALLS, NEA YORK At the requests o f the

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

    SciTech Connect (OSTI)

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

    2015-10-07

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

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

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

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

    2015-10-07

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

  12. Union City, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    This article is a stub. You can help OpenEI by expanding it. Union City is a city in Alameda County, California. It falls under California's 13th congressional district.12...

  13. Beijing ChangLi Union Energy Company | Open Energy Information

    Open Energy Info (EERE)

    Municipality, China Product: China-based technology company that research in zinc-air batteries (fuel cells). References: Beijing ChangLi Union Energy Company1 This article is a...

  14. Union Hill-Novelty Hill, Washington: Energy Resources | Open...

    Open Energy Info (EERE)

    help OpenEI by expanding it. Union Hill-Novelty Hill is a census-designated place in King County, Washington.1 References US Census Bureau 2005 Place to 2006 CBSA...

  15. Union Suppo Battery Co Ltd | Open Energy Information

    Open Energy Info (EERE)

    Suppo Battery Co Ltd Jump to: navigation, search Name: Union Suppo Battery Co Ltd Place: Shenyang, China Zip: 110015 Product: Liaoning-based manufacturer of rechargeable NiMH...

  16. Union Light, Heat & Power Co | Open Energy Information

    Open Energy Info (EERE)

    Name: Union Light, Heat & Power Co Place: Kentucky References: Energy Information Administration.1 EIA Form 861 Data Utility Id 19446 This article is a stub. You can help OpenEI...

  17. Union Power Cooperative- Residential Energy Efficient Heat Pump Loan Program

    Broader source: Energy.gov [DOE]

    Union Power Cooperative offers low interest loans to help its qualifying residential customers finance new, energy-efficient heat pumps. Interest rates, currently at 9%, will be fixed for the term...

  18. Active Labor Unions Interfacing with DOE – June 2014

    Broader source: Energy.gov [DOE]

    This information book provides an overview of what has been learned through the interface with representative labor unions and related stakeholders as well as accomplishments and current efforts to address any identified areas of concern.

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

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

    Lab Bernhard Mecking Jefferson Lab staff scientist Bernhard Mecking with the CEBAF Large Acceptance Spectrometer (CLAS) in Hall B. Bernhard Mecking steps down as Hall B leader at Jefferson Lab April 2, 2003 On 1 February 2003, Bernhard Mecking stepped down as leader of Hall B to return to full-time research at the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) in Newport News, Virginia. Mecking came to Jefferson Lab from the University of Bonn 18 years

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

    Office of Scientific and Technical Information (OSTI)

    with strength of spin orbit coupling (Journal Article) | DOE PAGES DOE PAGES Search Results Accepted Manuscript: Formation of quantum spin Hall state on Si surface and energy gap scaling with strength of spin orbit coupling Title: Formation of quantum spin Hall state on Si surface and energy gap scaling with strength of spin orbit coupling For potential applications in spintronics and quantum computing, it is desirable to place a quantum spin Hall insulator [i.e., a 2D topological insulator

  1. DOE/Advisory Board Recognize Service of Student Representatives |

    Office of Environmental Management (EM)

    Department of Energy DOE/Advisory Board Recognize Service of Student Representatives DOE/Advisory Board Recognize Service of Student Representatives April 16, 2014 - 12:58pm Addthis The Oak Ridge Site Specific Advisory Board (ORSSAB) and the U.S. Department of Energy's (DOE) Oak Ridge Office recognized outgoing student representatives Gracie Hall and Julia Riley at the April board meeting. ORSSAB is a federally chartered citizens' panel that provides recommendations to the DOE Oak Ridge

  2. Comment submitted by Consumers Union regarding the Energy Star Verification Testing Program

    Broader source: Energy.gov [DOE]

    This document is a comment submitted by Consumers Union regarding the Energy Star Verification Testing Program

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

    Office of Scientific and Technical Information (OSTI)

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

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

    Office of Legacy Management (LM)

    1 .' Department oft Endrgy :. ' . ' . Wasthgton, DC 20585 ' ,,' . .' . . s ,' FEi,l 6 jg& ,. . . ' I s. i ,-' .' ,, -. ,. The Honoradle':Rudolf Juiliani City'Hall New York,...

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

    DOE Patents [OSTI]

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

    1990-01-01

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

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

    DOE Patents [OSTI]

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

    1990-05-29

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

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

    SciTech Connect (OSTI)

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

    2015-01-26

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

  8. Microsoft Word - UEC Town_Hall_Meeting_notes.docx

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

    4/2013 CNMS User Group Town Hall meeting notes Open meeting held in Rooms 202A/B/C of ORNL Conference Center Convened 12:30pm Note: Slides presented at the meeting are attached following p.2. 1. Tony Hmelo, UEC Chair, opened the meeting and introduced the UEC members to the audience. 2. Tony provided an update on UEC activities in 2013 that covered: a. Role of the UEC: We are the link between users and management and influence CNMS activities. b. Telecons: The minutes are archived and available

  9. ,The Honorable Thomas Henino City Hall Plaza I

    Office of Legacy Management (LM)

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

  10. The Honorable'George Kubin City Hall Dear Mayor Kubin:

    Office of Legacy Management (LM)

    _ Department of Energy Washington. QC 20% APR 0 3 1995 The Honorable'George Kubin City Hall Dear Mayor Kubin: Secretary.of Energy.Wazel O'Leary has.announced a new approach to openness in the Department of,Energy [DOE) and its communications with the public. In support'of this initiative, we are pleased to forward the enclosed information related to the former Mtchigan Chemical Corporation site in your jurisdiction that performed work for DOE's predecessor agencies. This information is provided

  11. State of the Union Remarks on Energy in Four Charts | Department of Energy

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

    the Union Remarks on Energy in Four Charts State of the Union Remarks on Energy in Four Charts January 22, 2015 - 10:23am Addthis Daniel Wood Daniel Wood Data Visualization and Cartographic Specialist, Office of Public Affairs Sarah Gerrity Sarah Gerrity Former Multimedia Editor, Office of Public Affairs More State of the Union Coverage Interested in hearing the President's energy and climate change related remarks from the State of the Union? Watch the video! In Tuesday's State of the Union

  12. Hall magnetohydrodynamic reconnection in the plasmoid unstable regime

    SciTech Connect (OSTI)

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

    2011-09-15

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

  13. Fractionally charged skyrmions in fractional quantum Hall effect

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

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

    2015-11-26

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

  14. Refrigeration Recovery for Experiment Hall High Target Loads

    SciTech Connect (OSTI)

    Peter Knudsen, Venkatarao Ganni, Errol Yuksek, Jonathan Creel

    2010-04-01

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

  15. American Geophysical Union (AGU) Fall Meeting | Department of Energy

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

    American Geophysical Union (AGU) Fall Meeting American Geophysical Union (AGU) Fall Meeting December 14, 2015 8:00AM EST to December 18, 2015 6:00PM EST With nearly 24,000 attendees, AGU Fall Meeting is the largest Earth and space science meeting in the world. Now in its 48th year, AGU Fall Meeting is the best place to present your research; hear about the latest discoveries, trends, and challenges in the field; and network and make connections that can enhance your career. AGU Fall Meeting

  16. January 20, 2011, HSS Union Focus Group Meeting - Agenda

    Office of Environmental Management (EM)

    0-11 HSS/Union Focus Group Meeting January 20, 2011 2:00 - 3:00 PM (EST) Call-in: 301-903-0617 Agenda * Opening Remarks [G. Podonsky] * 2011 Strategic Initiatives - Status/Next Steps Overview - Safety & Security Reform Status [B. Eckroade/S. Kirchhoff] - NAPA Worker Dialogue [MJ Campagnone] - Aging Workforce [M. Ardaiz] - Training Assessment Pilots [L. Gasperow/J. Lozoya] * Safety Concerns: Safety Culture [J. Frederick] - DOE/EFCOG ISMS Task Team Report [P. Worthington] * DOE/Union

  17. Quantitative analytical model for magnetic reconnection in hall magnetohydrodynamics

    SciTech Connect (OSTI)

    Simakov, Andrei N

    2008-01-01

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

  18. Hall MHD Stability and Turbulence in Magnetically Accelerated Plasmas

    SciTech Connect (OSTI)

    H. R. Strauss

    2012-11-27

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

  19. The Hall D solenoid helium refrigeration system at JLab

    SciTech Connect (OSTI)

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

    2014-01-01

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

  20. Energy & Science at the State of the Union Tonight

    Broader source: Energy.gov [DOE]

    When the President begins his third State of the Union address this evening at 9pm EST, several important women and men in the fields of energy, science and technology will be sitting in the Capitol Building alongside First Lady Michelle Obama.

  1. May 19, 2011, HSS/Union Focus Group Meeting - Agenda

    Office of Environmental Management (EM)

    16-11 HSS Focus Group Telecom Meeting Worker Health, Safety and Security Improvement Priorities/Task Activities May 19, 2011 Proposed AGENDA Introductory Remarks........................................................................ Glenn Podonsky Meeting Purpose/Intended Outcomes/Process.................. Pete Stafford/Mari-Jo Campagnone Priority Improvement Areas/Tasks Discussion * Safety & Security Reform.................................Bill Eckroade/Steve Kirchhoff/Unions * Background

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

    Office of Scientific and Technical Information (OSTI)

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

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

    SciTech Connect (OSTI)

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

    2010-03-19

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

  4. President Obama Talks Clean Energy At Facebook Town Hall | Department of

    Energy Savers [EERE]

    Energy At Facebook Town Hall President Obama Talks Clean Energy At Facebook Town Hall April 25, 2011 - 10:24am Addthis Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs What does this mean for me? We are investing in new technologies that will help us reduce our dependence on fossil fuels. By investing in STEM education, we are investing in our future. President Obama hosted a town hall at Facebook's headquarters last Wednesday to discuss the

  5. TONIGHT: @Energy Livetweets the State of the Union 2013 | Department of

    Energy Savers [EERE]

    Energy TONIGHT: @Energy Livetweets the State of the Union 2013 TONIGHT: @Energy Livetweets the State of the Union 2013 February 12, 2013 - 12:25pm Addthis Stay tuned as we livetweet the President's annual State of the Union Address later this evening. | Graphic by Sarah Gerrity, Energy Department. Stay tuned as we livetweet the President's annual State of the Union Address later this evening. | Graphic by Sarah Gerrity, Energy Department. Erin R. Pierce Erin R. Pierce Former Digital

  6. December 4, 2008; HSS/Union Working Group Meeting on 2008 HSS/Union Topical Wrap Up - PRIORITY NEAR-TERM ACTION OVERVIEW

    Office of Environmental Management (EM)

    Topical Wrap-Up Meeting December 4, 2008 PRIORITY NEAR-TERM ACTION OVERVIEW Background: Union representatives who participated in the initial 2007 HSS Focus Group meetings agreed to a path forward in which various unions combined to form working groups to address union identified health and safety issues by topical area. 2008 meetings were held to specifically address the topical areas of interest and concern related to worker health and safety at DOE sites: Training, 851 Rule Implementation,

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

    Office of Scientific and Technical Information (OSTI)

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

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

    Open Energy Info (EERE)

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

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

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

    Jefferson Lab 2-03-05/news/dp-nws-ednotebook-0305-20120304_1_town-hall-carlton-ashby-newport-news-sc... Submitted: Tuesday, March 6, 2012 - 1

  10. WIPP Employee Inducted Into Mine Rescue Hall of Fame - WIPP Teams...

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

    award from Neal Merrifield, administrator for the Mine Safety and Health Administration MetalNon-Metal mines, after Kessler was inducted into the National Mine Rescue Hall of Fame...

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

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

    in Laboratory and Astrophysical Plasmas e-mail contact of main author: wding@wisc.edu Abstract. We report on experimental observations that the two-fluid Hall dynamo...

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

    Open Energy Info (EERE)

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

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

    Office of Scientific and Technical Information (OSTI)

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

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

    SciTech Connect (OSTI)

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

    2004-06-24

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

  15. Non-abelian fractional quantum hall effect for fault-resistant topological

    Office of Scientific and Technical Information (OSTI)

    quantum computation. (Technical Report) | SciTech Connect Technical Report: Non-abelian fractional quantum hall effect for fault-resistant topological quantum computation. Citation Details In-Document Search Title: Non-abelian fractional quantum hall effect for fault-resistant topological quantum computation. Topological quantum computation (TQC) has emerged as one of the most promising approaches to quantum computation. Under this approach, the topological properties of a non-Abelian

  16. Large Spin-Wave Bullet in a Ferrimagnetic Insulator Driven by the Spin Hall

    Office of Scientific and Technical Information (OSTI)

    Effect (Journal Article) | DOE PAGES Publisher's Accepted Manuscript: Large Spin-Wave Bullet in a Ferrimagnetic Insulator Driven by the Spin Hall Effect This content will become publicly available on January 31, 2017 « Prev Next » Title: Large Spin-Wave Bullet in a Ferrimagnetic Insulator Driven by the Spin Hall Effect Authors: Jungfleisch, M. B. ; Zhang, W. ; Sklenar, J. ; Ding, J. ; Jiang, W. ; Chang, H. ; Fradin, F. Y. ; Pearson, J. E. ; Ketterson, J. B. ; Novosad, V. ; Wu, M. ;

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

    Office of Scientific and Technical Information (OSTI)

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

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

    Office of Scientific and Technical Information (OSTI)

    Hadron Spectrometer (Journal Article) | SciTech Connect Performance of the Two Aerogel Cherenkov Detectors of the JLab Hall A Hadron Spectrometer Citation Details In-Document Search Title: Performance of the Two Aerogel Cherenkov Detectors of the JLab Hall A Hadron Spectrometer × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical Information (OSTI) and is provided as a public service. Visit

  19. Concept for Reducing Hall Thruster Chamber Wall Erosion with Lithium Vapor

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

    Shielding. | Princeton Plasma Physics Lab Concept for Reducing Hall Thruster Chamber Wall Erosion with Lithium Vapor Shielding. Hall thrusters have been established as a compact and reliable means for satellite applications. Erosion of the surfaces of such thrusters, however, has been a serious factor in limiting their lifetimes. Replacing eroded surfaces by replenishing them is generally unattractive because of the mechanical complexity and added weight that could be required. This

  20. 06.27.14 SRS Retirees Town Hall Meeting-Dave Hepner Page 1

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

    Meeting-Dave Hepner Page 1 SRSRA TOWN HALL MEETING New Ellenton Community Center JUNE 27, 2014 After reviewing the notes and discussing the Town Hall Meeting held on June 27, 2014, Dave Hepner, DOE-SR Acquisitions Operations Division Director, has made the following commitments, in accordance with the attendees' questions and stated concerns. Commitment: Date: Status:  Quarterly meetings with SRSRA Board Ongoing August 28, 2014 December 11, 2014  Annual meetings with SRSRA membership

  1. Former Herring-Hall-Marvin Safe Company Site in Hbmilton, Ohio

    Office of Legacy Management (LM)

    Remedial Action Performed at the Former Herring-Hall-Marvin Safe Company Site in Hbmilton, Ohio Department' of Energy Former Sites Restoration Division Oak Ridge Operations Office December 1996 @ Printed on recyclsdlmcyclable paper. 4.1838151.1 s CERTIFICATION DOCKET FOR THE REMEDIAL ACTION PERFORMED AT THE FORMER HERRING-HALL-MARVIN SAFE COMYANY SITE IN HAMILTON, OHIO DECEMBER 1996 . "I. Prepared for United States Department of Energy Oak Ridge Operations Office Under Contract No.

  2. Sandians Participate in 46th Annual American Geophysical Union (AGU)

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

    Conference Participate in 46th Annual American Geophysical Union (AGU) Conference - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing

  3. Amitava Bhattacharjee Elected a Fellow of the American Geophysical Union |

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

    Princeton Plasma Physics Lab Amitava Bhattacharjee Elected a Fellow of the American Geophysical Union By Raphael Rosen September 18, 2015 Tweet Widget Google Plus One Share on Facebook PPPL Physicist Amitava Bhattacharjee (Photo by Elle Starkman) PPPL Physicist Amitava Bhattacharjee Amitava Bhattacharjee, head of the Theory Department at the Princeton Plasma Physics Laboratory (PPPL) and professor of astrophysical sciences at Princeton University, has been elected a fellow of the American

  4. President Obama Praises NAMII in State of the Union Address

    Broader source: Energy.gov [DOE]

    In his 2013 State of the Union address, President Obama used the National Additive Manufacturing Institute (NAMII) as a model of the potential for innovation in manufacturing in the U.S. His address made it clear that his Administration is making the revitalization of the manufacturing sector a priority, stating that he plans to make the U.S. "a magnet for new jobs and manufacturing." He laid out a plan for spurring growth in manufacturing in the following statement:

  5. Rotary union for use with ultrasonic thickness measuring probe

    DOE Patents [OSTI]

    Nachbar, Henry D. (Schenectady, NY)

    1992-01-01

    A rotary union for rotatably supporting an ultrasonic probe operable to nondestructively measure the thickness of steam generator tubes to determine the amount of corrosion experienced by the tubes includes a stationary body having a bore therethrough and an outlet drain, and a fitting rotatably mounted within the upper end of the body. The fitting has a bore aligned with the bore of the body. An electrical cable positioned within a water supply tube in an annular arrangement passes through the bore of the body and the bore of the fitting. This annular arrangement, in turn, is positioned within a connector element which extends outwardly from the fitting bore and is connected to the ultrasonic probe. An elastomeric lower bushing seals the annular arrangement to the lower end of the rotary union body and an elastomeric upper bushing seals the connector element to the fitting to permit the connector element and the ultrasonic probe connected thereto to rotate with the fitting relative to the body. The lower and upper bushings permit water to be passed through the annular arrangement and into the ultrasonic probe and thereafter discharged between the annular arrangement and the connector element to the outlet drain of the rotary union body.

  6. Rotary union for use with ultrasonic thickness measuring probe

    DOE Patents [OSTI]

    Nachbar, H.D.

    1992-09-15

    A rotary union for rotatably supporting an ultrasonic probe operable to nondestructively measure the thickness of steam generator tubes to determine the amount of corrosion experienced by the tubes includes a stationary body having a bore therethrough and an outlet drain, and a fitting rotatably mounted within the upper end of the body. The fitting has a bore aligned with the bore of the body. An electrical cable positioned within a water supply tube in an annular arrangement passes through the bore of the body and the bore of the fitting. This annular arrangement, in turn, is positioned within a connector element which extends outwardly from the fitting bore and is connected to the ultrasonic probe. An elastomeric lower bushing seals the annular arrangement to the lower end of the rotary union body and an elastomeric upper bushing seals the connector element to the fitting to permit the connector element and the ultrasonic probe connected thereto to rotate with the fitting relative to the body. The lower and upper bushings permit water to be passed through the annular arrangement and into the ultrasonic probe and thereafter discharged between the annular arrangement and the connector element to the outlet drain of the rotary union body. 5 figs.

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

    SciTech Connect (OSTI)

    Sandler, Nancy P.; Fradkin, Eduardo

    2001-06-15

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

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

    SciTech Connect (OSTI)

    Osborne, Hunter

    2009-07-23

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

  9. ASU EFRC - Undergraduate students

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

    Undergraduate students Emily North undergraduate student Michael Kenney Undergraduate student

  10. Planning for a Sustainable Future of the Cincinnati Union Terminal

    SciTech Connect (OSTI)

    2012-04-30

    The Cincinnati Museum Center invited a number of local stakeholders, political leaders, nationally and internationally recognized design professionals and the Design Team, that has been engaged to help shape the future of this remarkable resource, to work together in a Workshop that would begin to shape a truly sustainable future for both the Museum and its home, the Union Terminal, one of the most significant buildings in America. This report summarizes and highlights the discussions that took place during the Workshop and presents recommendations for shaping a direction and a framework for the future.

  11. Union City, New Jersey 07087 Dear Mayor Walter:

    Office of Legacy Management (LM)

    En&igy ' - Washyon, DC20585 APR 0 3 ,I995 ,, -,,w ' -..-- -....-.. r- 11--a.-._ 3715 Paisade Avenue - .*<;1 Union City, New Jersey 07087 Dear Mayor Walter: Secretary of Energy Hazel O'Leary has announced a new approach to openness in the Department of Energy (DOE) and its communications with the public. In support of this initiative, we to forward the enclosed information related,to the former Callite performed work for DOE or its site in your jurisdiction that agencies.' This'information

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

    SciTech Connect (OSTI)

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

    2011-07-15

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

  13. Watch Energy Highlights from the 2016 State of the Union | Department of

    Energy Savers [EERE]

    Energy 2016 State of the Union Watch Energy Highlights from the 2016 State of the Union January 13, 2016 - 3:19pm Addthis Watch the Energy highlights from President Obama's final State of the Union delivered January 12, 2016. | Video by Simon Edelman, Energy Department. Simon Edelman Simon Edelman Chief Creative Officer Allison Lantero Allison Lantero Digital Content Specialist, Office of Public Affairs From climate change to wind and solar power to electric vehicles, President Obama touched

  14. Cooperation with the New Independent States of the Former Soviet Union |

    Office of Environmental Management (EM)

    Department of Energy Cooperation with the New Independent States of the Former Soviet Union Cooperation with the New Independent States of the Former Soviet Union The following Acquisition Letter 95-14 includes the terms and conditions (both intellectual property and non-intellectual property) that are to be used in subcontracts between DOE national laboratories and institutes in the New Independent States of the Former Soviet Union (NIS). There are two patent and data clauses - one for the

  15. #SOTU Roundup: Energy Highlights from the 2014 State of the Union |

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

    Department of Energy #SOTU Roundup: Energy Highlights from the 2014 State of the Union #SOTU Roundup: Energy Highlights from the 2014 State of the Union January 29, 2014 - 12:45pm Addthis On January 28, 2014, President Obama delivered his fifth State of the Union address at the U.S. Capitol Building. Above, check out the energy and climate change highlights from the speech. | Video compilation by Matty Greene, Energy Department. Marissa Newhall Marissa Newhall Director of Digital Strategy

  16. PRELIMINARY SURVEY OF THE UNION CARBIDE CORPORATION METALS DIVISION PLANT, NIAGARA FALLS, NEW YORK

    Office of Legacy Management (LM)

    e - .' N"lr 7% PRELIMINARY SURVEY OF THE UNION CARBIDE CORPORATION METALS DIVISION PLANT, NIAGARA FALLS, NEW YORK Work performed by the Health and Safety Research Division Oak Ridge Natjonal Laboratory Oak Ridge, Tennessee 37830 December 1980 OAK RIDGE NATIONAL LABORATORY operated by UNION CARBIDE CORPORATION for the DEPARTMENT OF ENERGY as part of the Formerly Utilized Sites-- Remedial Action Program PRELIMINARY SURVEY OF THE UNION CARBIDE CORPORATION METALS DIVISION PLANT, NIAGARA FALLS,

  17. June 11, 2009, HSS/Union Task Meeting on 2009 HSS/Union Task Progress - Assessing Training Gaps in ORPS

    Office of Environmental Management (EM)

    Assessing Training Gaps Using DOE's Occurrence Reporting and Processing System (ORPS) HSS/Union Meeting June 11, 2009 2 Highlights Training is a contributing cause in about 15% of DOE operational events (about 150 per year) * Poor management practices are the most common training cause * Poor training programs are next (cited about 50 times per year) Of ORPS-reported injuries, about 17% had training as a contributing cause (101 of 594) * About 30 per year HS-30 will develop a report with a few

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

    SciTech Connect (OSTI)

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

    2015-05-11

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

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

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

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

    2015-01-09

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

  20. A look back at Union Carbides [first] 20 Years in Nuclear Energy...

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

    first 20 Years in Nuclear Energy The Gaseous Diffusion Plants Note: Union Carbide Nuclear Division, which started out as Carbide and Carbon Chemicals Company, operated the...

  1. Union zur F rderung von Oel und Proteinpflanzen Ufop | Open Energy...

    Open Energy Info (EERE)

    zur F rderung von Oel und Proteinpflanzen Ufop Jump to: navigation, search Name: Union zur Frderung von Oel- und Proteinpflanzen (Ufop) Place: Germany Product: Germany-based...

  2. Join @Energy for the 2016 State of the Union Address | Department of Energy

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

    @Energy for the 2016 State of the Union Address Join @Energy for the 2016 State of the Union Address January 11, 2016 - 11:10am Addthis Join us for live coverage of the State of the Union, starting at 9PM ET on Tuesday. | Image courtesy of Carly Wilkins. Join us for live coverage of the State of the Union, starting at 9PM ET on Tuesday. | Image courtesy of Carly Wilkins. Allison Lantero Allison Lantero Digital Content Specialist, Office of Public Affairs How can I participate? Follow along with

  3. April 30, 2008; HSS/Union Working Group Meeting to address training...

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

    ... direct marketing and public relations; and reports ... Department Safety and Health Committee American National Standards ... The union's official journal, The Electrical Worker, ...

  4. Join Energy.gov at the 2014 State of the Union | Department of Energy

    Office of Environmental Management (EM)

    Energy.gov at the 2014 State of the Union Join Energy.gov at the 2014 State of the Union January 28, 2014 - 11:23am Addthis Join Energy.gov tonight as we livetweet about all the major energy points in the President's State of the Union address. | Graphic by <a href="/node/379579">Sarah Gerrity</a>, Energy Department. Join Energy.gov tonight as we livetweet about all the major energy points in the President's State of the Union address. | Graphic by Sarah Gerrity, Energy

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

    SciTech Connect (OSTI)

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

    2011-06-15

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

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

    Office of Scientific and Technical Information (OSTI)

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

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

    Office of Scientific and Technical Information (OSTI)

    with strength of spin orbit coupling (Journal Article) | SciTech Connect Formation of quantum spin Hall state on Si surface and energy gap scaling with strength of spin orbit coupling Citation Details In-Document Search Title: Formation of quantum spin Hall state on Si surface and energy gap scaling with strength of spin orbit coupling × You are accessing a document from the Department of Energy's (DOE) SciTech Connect. This site is a product of DOE's Office of Scientific and Technical

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

    SciTech Connect (OSTI)

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

    2014-04-07

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

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

    Office of Scientific and Technical Information (OSTI)

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

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

    SciTech Connect (OSTI)

    Brochen, Stphane; Feuillet, Guy; Pernot, Julien

    2014-04-28

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

  11. Union Pacific Railroad`s LNG locomotive test program

    SciTech Connect (OSTI)

    Grimaila, B.

    1995-12-31

    Union Pacific Railroad is testing LNG in six locomotives through 1997 to determine if the liquefied natural gas technology is right for them. Two of the six LNG test locomotives are switch, or yard, locomotives. These 1,350 horsepower locomotives are the industry`s first locomotives totally fueled by natural gas. They`re being tested in the yard in the Los Angeles area. The other four locomotives are long-haul locomotives fueled by two tenders. These units are duel-fueled, operating on a mixture of LNG and diesel and are being tested primarily on the Los Angeles to North Platte, Nebraska corridor. All the information concerning locomotive emissions, locomotive performance, maintenance requirements, the overall LNG system design and the economic feasibility of the project will be analyzed to determine if UPR should expand, or abandon, the LNG technology.

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

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

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

  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)

    2014-07-15

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

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

    Broader source: Energy.gov [DOE]

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

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

    Reports and Publications (EIA)

    2011-01-01

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

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

    SciTech Connect (OSTI)

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

    2014-05-15

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

  17. January 22, 2014 in 100E Hildebrand Hall | Center for Gas

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

    SeparationsRelevant to Clean Energy Technologies | Blandine Jerome January 22, 2014 in 100E Hildebrand Hall Previous Next List Miguel Gonzalez (Dept. of Chemistry, UC Berkeley) Designing Metal-Organic Frameworks for Catalysis Richard Martin (Computational Research Division, LBNL) Advances in Computational Design of Nanoporous Materials

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

    Broader source: Energy.gov [DOE]

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

  19. CNS, labor union donate $15,000 to local March of Dimes | Y-12 National

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

    Security Complex CNS, labor union donate ... CNS, labor union donate $15,000 to local March of Dimes Posted: March 26, 2015 - 4:07pm At a recent kickoff luncheon, Y-12 Site Manager Bill Tindal (right) and Kimberly Mitchell of the Atomic Trades and Labor Council (left) gave a $15,000 check to Susie Racek, executive director of the local chapter of March of Dimes (center). The ATLC, an organization that represents 16 International Unions with more than 2,100 members, and Consolidated Nuclear

  20. Secretary Chu to Visit Houston to Highlight Obama's State of the Union

    Energy Savers [EERE]

    Address, Discuss "All of the Above" Energy Strategy | Department of Energy Visit Houston to Highlight Obama's State of the Union Address, Discuss "All of the Above" Energy Strategy Secretary Chu to Visit Houston to Highlight Obama's State of the Union Address, Discuss "All of the Above" Energy Strategy February 1, 2012 - 3:47pm Addthis Washington, D.C. - As part of the Energy Department's ongoing efforts to highlight President Obama's State of the Union address

  1. September 8, 2011, HSS/Union Focus Group Work Group Telecom - Meeting Overview and Action Summary

    Energy Savers [EERE]

    09-12-11 Draft DRAFT Meeting Overview and Action Summary HSS/Union Focus Group Work Group Telecom September 8, 2011 Meeting Overview: Glenn Podonsky reflected on the HSS Focus Group's 5 year history and reported that 24 HSS/Union Focus group meetings have been held to date. He emphasized the value of the relationships that have been developed between HSS and the unions and the need to re-energize efforts and rally to move the ball forward in addressing worker health and safety concerns through

  2. September 8, 2011, HSS/Union Focus Group Work Group Telecom - Work Group matrix

    Energy Savers [EERE]

    Rev 09-19-11) Work Group / HSS and Union Leads Union/Stakeholder/HSS Participants Improvement Issues/Goals Initial/Current Tasks Outputs 10CFR 851 -Implementation -Training HSS Leads: Pat Worthington / Bill McArthur Union Lead: Doug Stephens -USW Co-Lead: Barb McCabe - IUOE TBD - BCTD Dianne Whitten - HAMTC Stan Scott - HAMMER Gary Gustafson - LIUNA Steve Simonson - HSS Tom Staker - HSS Collectively work to ensure implementation of health and safety programs (851 Rule) within and among DOE site

  3. State of the Union Highlights Clean Energy Progress | Department of Energy

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

    State of the Union Highlights Clean Energy Progress State of the Union Highlights Clean Energy Progress February 5, 2014 - 12:00am Addthis President Obama focused on a variety of renewable energy and energy efficiency issues in his State of the Union address on January 28, highlighting progress toward a "shift to a cleaner energy economy" and spotlighting solar energy and fuel efficiency. "The shift to a cleaner energy economy won't happen overnight, and it will require tough

  4. Watch Energy Highlights from the State of the Union | Department of Energy

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

    Watch Energy Highlights from the State of the Union Watch Energy Highlights from the State of the Union January 21, 2015 - 11:46am Addthis Matty Greene Matty Greene Former Videographer From low gas prices to growth in renewable energy sources like wind and solar, energy featured prominently in President Obama's sixth State of the Union address last night. From the way we produce energy to how we use it in our homes and businesses, the President laid out key ways that he plans to fight climate

  5. Postdocs, Students

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

    Postdocs, Students /collaboration/_assets/images/icon-collaboration.jpg Postdocs, Students Explore the multiple dimensions of a career at LANL: work with the best minds on the planet in an inclusive environment that is rich in intellectual vitality and opportunities for growth. Postdocs» Students» STUDENTS AND POSTDOCS: what they are researching at LANL Postdoc Claire White Postdoc Jason Haraldsen Postdoc Raja Chellappa Nate Sanchez Student Nate Sanchez Student Claire White Postdoc Jason

  6. APRIL 30, 2008, HSS/UNION MEETING TO ADDRESS TRAINING INTEGRATED EXECUTIVE SUMMARY AND FINAL ACTION LIST

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

    HSS/UNION MEETING TO ADDRESS TRAINING INTEGRATED EXECUTIVE SUMMARY AND FINAL ACTION LIST HSS and the labor unions who participated in the initial 2007 HSS Focus Group meetings agreed to a path forward in which various unions combined to form core working groups to address union identified issues by topical area. The following is a synthesis of actions/activities identified in the April 30 HSS/Union meeting to address training issues with focus in the areas of the development of DOE-wide HAMMER

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

    SciTech Connect (OSTI)

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

    2012-01-15

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

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

    SciTech Connect (OSTI)

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

    2014-11-15

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

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

    SciTech Connect (OSTI)

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

    2006-02-15

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

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

    SciTech Connect (OSTI)

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

    2015-05-07

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

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

    SciTech Connect (OSTI)

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

    2015-05-04

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

  12. Building America Top Innovations Hall of Fame Profile … Basement Insulation Systems

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

    and durable construction practices are critical for basements because basements can account for 10% to 30% of a home's total heat loss and provide significant risk of moisture problems due to extensive cold surfaces at the walls and slab. BUILDING AMERICA TOP INNOVATIONS HALL OF FAME PROFILE INNOVATIONS CATEGORY: 1. Advanced Technologies and Practices 1.1 Building Science Solutions Basement Insulation Systems Building America research has provided essential guidance for one of the most

  13. New Physics Division Safety Officer and New Hall A Work Coordinator Named |

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

    Jefferson Lab Physics Division Safety Officer and New Hall A Work Coordinator Named: A Message from Rolf Ent It is with great pleasure that we announce that Ed Folts will assume the responsibilities as Physics Division Safety Officer starting January 1st, 2016. In this role, Ed will report to Patrizia Rossi, and Participate at a management level for ensuring that a safe, healthy and environmentally sound work environment exists for all Division staff members and Users of the Jefferson lab

  14. February 25, 2015 in 100E Hildebrand Hall starts at 11:45am | Center for

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

    Gas SeparationsRelevant to Clean Energy Technologies | Blandine Jerome 5, 2015 in 100E Hildebrand Hall starts at 11:45am Previous Next List Anne Marti (National Energy Technology Laboratory) Metal Organic Framework Development for CO2 Selective Mixed Matrix Membranes Kyriakos Stylianou (EPFL, Switzerland/The Molecular Foundry, LBNL) Spray-drying generation of MOF based composites with enhanced hydrolytic stability Time: 11:45am

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

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

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

  16. June 24, 2015 in 100E Hildebrand Hall | Center for Gas SeparationsRelevant

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

    to Clean Energy Technologies | Blandine Jerome 4, 2015 in 100E Hildebrand Hall Previous Next List Stephen Meckler (Lawrence Berkeley National Laboratory) Layered Zif-Polymer Composites Accessed through Metal Oxide Precursors Zachary Smith (University of California Berkeley) Mixed-Matrix Membranes Formed from M2(dobdc) Nanocrystals and Polyimide-based Copolymers Time: 12:00pm (Pacific time) Location: 100E

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

    SciTech Connect (OSTI)

    Wu, Jiansheng

    2014-07-28

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

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

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

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

  19. Microsoft PowerPoint - Town Hall Slides 5-15-14 rev.0

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

    15, 2014 Meeting Agenda * Opening Comments - Mayor Janway * Panel Member Introductions - John Heaton (Moderator) * CBFO Manager Remarks - Dana Bryson * Update on Phase 3 Activities - Tammy Reynolds * May 10 Entry * Today's Entry * Ventilation System Status * Close-out of Bioassay Program - Jim Stafford * Audience Questions * One question at a time please OPENING COMMENTS Dana Bryson, CBFO Deputy Manager This Week's Events * Joe Franco in Washington * Town Hall Agenda * May 10 and May 15 Entries

  20. Microsoft PowerPoint - Town_Hall_Slides_3_5_15_Final

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

    Carlsbad Town Hall Meeting Sponsored by the U.S. Department of Energy and the City of Carlsbad, NM March 5, 2015 www.energy.gov/EM 2 Agenda * Opening Comments - Mayor Dale Janway * Update on CBFO and WIPP activities - Dana Bryson * Recovery Status - Tammy Reynolds * Radiological Contamination - Jim Blankenhorn * Audience Questions * In house * Internet * Closing Comments - Dana Bryson www.energy.gov/EM 3 Update on CBFO and WIPP Activities Dana Bryson, CBFO Deputy Manager www.energy.gov/EM 4 *

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

    Office of Legacy Management (LM)

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

  2. Fuxin Union Wind Power Co Ltd formerly known as Liaoning Zhangwu...

    Open Energy Info (EERE)

    Wind Power Co Ltd formerly known as Liaoning Zhangwu Xiehe Wind Power Co Ltd Jump to: navigation, search Name: Fuxin Union Wind Power Co Ltd (formerly known as Liaoning Zhangwu...

  3. President Bush Highlights Energy in the State of the Union Address |

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

    Department of Energy Highlights Energy in the State of the Union Address President Bush Highlights Energy in the State of the Union Address February 3, 2005 - 10:01am Addthis "To keep our economy growing, we also need reliable supplies of affordable, environmentally responsible energy. Nearly four years ago, I submitted a comprehensive energy strategy that encourages conservation, alternative sources, a modernized electricity grid, and more production here at home -- including safe,

  4. April 30, 2008; HSS/Union Working Group Meeting to address training … Meeting Summary

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

    * * training. * area discussed. Center (NTC) National Training Center. * * * Conduct of Meeting. A 1. 2. 3. 4. HAMMER. HSS/UNION MEETING TO ADDRESS TRAINING DRAFT MEETING SUMMARY Introductory Remarks. Glenn Podonsky made the following points: More than a dialogue, the intent of HSS is to participate in a productive manner, to develop working relationships with the unions, to work the issues, identify actions, and institutionalize a process for addressing and resolving issues to improve worker

  5. September 8, 2011, HSS/Union Focus Group Work Group Telecom - Work Group Guidance

    Energy Savers [EERE]

    -29-11 Draft Collaboration provides an opportunity to serve as an entity that is greater than the sum of its parts. HSS FOCUS GROUP DRAFT PROPOSED WORK GROUP GUIDANCE BACKGROUND: The HSS Focus Group provides a forum for communication and collaboration related to worker health, safety and security among HSS management and staff, labor unions, DOE Programs and stakeholders. Based on the foundation that labor union representatives are an essential source of frontline perspective in identifying,

  6. November 17, 2009 HSS/Union Lead Checkpoint Meeting on Integrated Collaborative Oversight - Accomplishments Overview

    Energy Savers [EERE]

    November 17, 2008 2009 Priority Activities Accomplishments/Path Forward Overview Training Assessments Accomplishments: * HSS (NTC)/NIEHS/Union Collaboration - Completed Safety Training Workshop for the Oak Ridge Office (ORO) and the Y-12 Site Office (YSO) in July, 2009 - Over 50 attendees participated including representatives from Federal, contractor and union organizations (local and international) - ORO/YSO Safety Training Workshop Report completed and provided to ORO/YSO management -

  7. July 17, 2008; HSS/Union Working Group Meeting, Safety Standards, 10 CFR 851 - Agenda

    Office of Environmental Management (EM)

    6-24-08 Draft HSS/Union Working Group Meeting July 17, 2008 1:00 - 4:00 pm EST FORS 7E-069 Call-in: 301-903-9197 SUBJECT: SAFETY STANDARDS / 10 CFR 851 Core Union Working Groups Safety Standards: Metal Trades Department AFL-CIO - Lead International Brotherhood of Electrical Workers (IBEW) Operative Plasterers' & Cement Masons' International Association (OPCMIA) 10 CFR 851: United Steel, Paper and Forestry, Rubber, Manufacturing, Energy, Allied Industrial and Service Workers International

  8. May 19, 2011, HSS/Union Focus Group Meeting - Summary and Participants

    Office of Environmental Management (EM)

    - Final Draft 07-11-11 HSS Focus Group May 19 Teleconference with Union Representatives Reconciliation of HSS/Union Work Groups MEETING DISCUSSION Glenn Podonsky, Chief Health, Safety and Security Officer - Opening Remarks: * DOE Administration's strategic goals are supported by continued focus on national prosperity and security through energy, environmental, nuclear and science and technology advancement solutions. * Melvin Williams is recently appointed in the new position of Associate Deputy

  9. The European Union's emissions trading system in perspective

    SciTech Connect (OSTI)

    A. Denny Ellerman; Paul L. Joskow

    2008-05-15

    The performance of the European Union's Emissions Trading System (EU ETS) to date cannot be evaluated without recognizing that the first three years from 2005 through 2007 constituted a 'trial' period and understanding what this trial period was supposed to accomplish. Its primary goal was to develop the infrastructure and to provide the experience that would enable the successful use of a cap-and-trade system to limit European GHG emissions during a second trading period, 2008-12, corresponding to the first commitment period of the Kyoto Protocol. The trial period was a rehearsal for the later more serious engagement and it was never intended to achieve significant reductions in CO{sub 2} emissions in only three years. In light of the speed with which the program was developed, the many sovereign countries involved, the need to develop the necessary data, information dissemination, compliance and market institutions, and the lack of extensive experience with emissions trading in Europe, we think that the system has performed surprisingly well. Although there have been plenty of rough edges, a transparent and widely accepted price for tradable CO{sub 2} emission allowances emerged by January 1, 2005, a functioning market for allowances has developed quickly and effortlessly without any prodding by the Commission or member state governments, the cap-and-trade infrastructure of market institutions, registries, monitoring, reporting and verification is in place, and a significant segment of European industry is incorporating the price of CO{sub 2} emissions into their daily production decisions. The development of the EU ETS and the experience with the trial period provides a number of useful lessons for the U.S. and other countries. 27 refs., 7 figs., 5 tabs.

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

    SciTech Connect (OSTI)

    Bai, Xue-Ning

    2014-08-20

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

  11. ASU EFRC - Graduate students

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

    Graduate students Alex Volosin Graduate student Anindya Roy Graduate student Antaeres' Antoniuk-Pablant Graduate Student Arnab Dutta Graduate student Ben Sherman Graduate student Bradley Brennan Graduate student Brian Watson Graduate student Chelsea Brown Graduate student Chelsea McIntosh Graduate student Dalvin Mendez Graduate student Daniel Mieritz Graduate student Danielle Ladd Graduate student Dinesh Medpelli Graduate student Dong Wang Graduate student Ian Pahk Graduate student Jaro Arero

  12. Students' Association

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

    the Student's Association (SA) Executive Board by email at saleaders@lanl.gov. We look forward to meeting you For new students... Join us on Facebook Check out Living in Los...

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

    SciTech Connect (OSTI)

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

    2014-08-21

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

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

    SciTech Connect (OSTI)

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

    2014-09-29

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

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

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

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

    2012-06-01

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

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

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

    YerPI physicist Kim Egiyan | Jefferson Lab long-time colleague, Hall B staff scientist and senior YerPI physicist Kim Egiyan August 25, 2006 Kim Egiyan Kim Egiyan K.Sh. Egiyan was born on 18 June 1935 in the Armenian village of Mirzik in the Khanlar region of Azerbaijan. Kim attended the Yerevan State University, Yerevan (Armenia) and in 1957, after finishing his studies at the university, he joined Yerevan Physics Institute as a junior scientist. In the nearly 50 years since then, Kim

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

    SciTech Connect (OSTI)

    Hernndez, C.; Chaubet, C.

    2014-05-15

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

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

    SciTech Connect (OSTI)

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

    2014-08-21

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

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

    Office of Legacy Management (LM)

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

  20. July 17, 2008; HSS/Union Working Group Meeting, Safety Standards, 10 CFR 851 … Meeting Summary

    Office of Environmental Management (EM)

    10 CFR 851 and DOE Safety Standards Implementation July 17, 2008 Integrated Executive Summary and Final Action List HSS and the labor unions who participated in the initial 2007 HSS Focus Group meetings agreed to a path forward in which various unions combined to form core working groups to address union identified health and safety issues by topical area. The following is an overview of actions/activities identified in the July 17 HSS/Union meeting to address 851 Rule and DOE Safety Standards

  1. The Hall

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

    rotation which measures equilibrium and fluctuating magnetic field and current density. ... The nonperturbing probe beams are frequency offset and have counter-rotating circular ...

  2. Join @Energy for the 2015 State of the Union Address | Department of Energy

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

    us for live coverage of the State of the Union, starting at 9PM ET. | Image courtesy of Sarah Gerrity. Join us for live coverage of the State of the Union, starting at 9PM ET. | Image courtesy of Sarah Gerrity. Pat Adams Pat Adams Digital Content Specialist, Office of Public Affairs How can I participate? Follow along with @Energy on Twitter Starting at 9 p.m. ET tonight. Ask questions and share your thoughts by tweeting at @Energy using #SOTU. Tune in tomorrow at 1 p.m. ET for Big Block of

  3. Innovation and Energy at the State Of The Union | Department of Energy

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

    President Obama will deliver the State of the Union to Congress & to the American people tonight at 9pm ET. | Official White House Photo by Chuck Kennedy. President Obama will deliver the State of the Union to Congress & to the American people tonight at 9pm ET. | Official White House Photo by Chuck Kennedy. April Saylor April Saylor Former Digital Outreach Strategist, Office of Public Affairs How can I participate? President Obama will address the nation Tuesday, Feb. 12 at 9pm EST Tune

  4. July 17, 2008; HSS/Union Working Group Meeting, Safety Standards, 10 CFR 851 - Information Package

    Office of Environmental Management (EM)

    10 CFR 851 / Safety Standards July 17, 2008 July 17, 2008 ds 06-24-08 Draft HSS/Union Working Group Meeting July 17, 2008 1:00 - 4:00 pm EST FORS 7E-069 Call-in: 301-903-9197 SUBJECT: SAFETY STANDARDS / 10 CFR 851 Core Union Working Groups Safety Standards: Metal Trades Department AFL-CIO - Lead International Brotherhood of Electrical Workers (IBEW) Operative Plasterers' & Cement Masons' International Association (OPCMIA) 10 CFR 851: United Steel, Paper and Forestry, Rubber, Manufacturing,

  5. DOE - Office of Legacy Management -- Union Mines Development Corp - NY 0-22

    Office of Legacy Management (LM)

    Mines Development Corp - NY 0-22 FUSRAP Considered Sites Site: UNION MINES DEVELOPMENT CORP. (NY.0-22) Eliminated from consideration under FUSRAP Designated Name: Not Designated Alternate Name: Union Carbide NY.0-22-1 Location: New York , New York NY.0-22-1 Evaluation Year: 1987 NY.0-22-1 Site Operations: The company owned uranium mines or reserves located in the western U.S. NY.0-22-1 Site Disposition: Eliminated - No reason to believe radioactive material was used at this site NY.0-22-1

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

    SciTech Connect (OSTI)

    Karman, Nathan

    2012-11-29

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

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

    SciTech Connect (OSTI)

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

    2013-06-01

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

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

    SciTech Connect (OSTI)

    Snchez-Arriaga, G.

    2013-10-15

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

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

    SciTech Connect (OSTI)

    Hao, Qiang; Chen, Wenzhe; Xiao, Gang

    2015-05-04

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

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

    SciTech Connect (OSTI)

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

    2014-12-23

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

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

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

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

    2014-12-23

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

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

    SciTech Connect (OSTI)

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

    2014-05-07

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

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

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

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

    2014-07-01

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

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

    SciTech Connect (OSTI)

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

    2014-07-01

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

  15. ON E WA Y N E W L O N D O N R D R A Y ST C L E V E L A N D A

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

    Bldg Du Pont Hall Hullihen Hall Morris Library Memorial Hall Perkins Student Center Russell Complex Christiana Towers Apartments Clayton Hall Conference Center Ray Street...

  16. Student Supervisors

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

    Student Supervisors Student Supervisors may include: LLNL scientists and senior technicians with proper safety training, qualification in working with high-power lasers, appropriate work experience in the JLF, and approval by JLF Facility Operations. External scientists with proper safety training, qualification in working with high-power lasers, more than one month of appropriate work experience in the JLF, and approval by JLF Facility Operations. Supervisors of students must have taken and

  17. September 8, 2011, HSS/Union Focus Group Work Group Telecom - Agenda

    Energy Savers [EERE]

    Focus Group HSS/Union Work Group Telecom September 8, 2011 Call-In: 301-903-0620 PROPOSED AGENDA Work Group Framework 3:00 - 4:00 pm EST Introductory Remarks...................................................Glenn Podonsky Meeting Purpose/Process..........................................Mari-Jo Campagnone Group Discussion Facilitation...............................................Pete Stafford Discussion...................................................................................All (1)

  18. Students' Association

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

    cutting-edge simulation technology within GET training. Heather has also been an ESL instructor in Ohio working with adult international students from various countries....

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

    SciTech Connect (OSTI)

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

    2014-01-21

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

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

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

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

    2015-11-19

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

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

    DOE Patents [OSTI]

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

    2014-05-13

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

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

    SciTech Connect (OSTI)

    Rucinski, Russ; /Fermilab

    1997-03-12

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

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

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

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

    2015-06-11

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

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

    SciTech Connect (OSTI)

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

    2015-01-19

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

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

    SciTech Connect (OSTI)

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

    2007-09-15

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

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

    SciTech Connect (OSTI)

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

    2015-06-01

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

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

    SciTech Connect (OSTI)

    Carlos Munoz Camacho

    2005-12-01

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

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

    SciTech Connect (OSTI)

    Malek Mazouz

    2006-12-08

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

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

    SciTech Connect (OSTI)

    Jensen, T.; Whitmore, C. |

    1999-01-05

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

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

    SciTech Connect (OSTI)

    David Bell

    2004-03-01

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

  11. September 16, 2008; HSS/Union Working Group Meeting, Former Worker and Energy Compensation Programs, CAIRS Reporting, Central Worker Data Tracking … Meeting Summary

    Energy Savers [EERE]

    7 10-10-08 Draft HSS/Union Meeting To Address Former Worker and Energy Employee Occupational Illness Compensation Programs, CAIRS Reporting, and Central Worker Data Tracking September 16, 2008 Integrated Executive Summary and Final Action List Background: HSS and the labor unions who participated in the initial 2007 HSS Focus Group meetings agreed to a path forward in which various unions combined to form core working groups to address union identified health and safety issues by topical area.

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

    SciTech Connect (OSTI)

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

    2015-05-07

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

  13. Short-Term Energy Tests of a Credit Union Building in Idaho (Draft)

    SciTech Connect (OSTI)

    Subbarao, K.; Balcomb, J. D.

    1993-01-01

    This report describes tests and results of the energy performance of a credit union building in Idaho. The building is in the Energy Edge Program administered by the Bonneville Power Administration (BPA). BPA provided incentives to incorporate innovative features designed to conserve energy use by the building. It is of interest to determine the actual performance of these features. The objective of this project was to evaluate the applicability of the SERI short-term energy monitoring (STEM) method to nonresidential buildings.

  14. #SOTU Roundup: Energy Highlights from the 2014 State of the Union |

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

    Department of Energy On January 28, 2014, President Obama delivered his fifth State of the Union address at the U.S. Capitol Building. Above, check out the energy and climate change highlights from the speech. | Video compilation by Matty Greene, Energy Department. Marissa Newhall Marissa Newhall Director of Digital Strategy & Communications #SOTU 2014 Learn how the Energy Department is fighting climate change and growing the clean energy economy. Energy topics featured prominently in

  15. Visit us at the American Geophysical Union (AGU) Fall Meeting, Booth#1211 |

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

    Dec 14-18th us at the American Geophysical Union (AGU) Fall Meeting, Booth#1211 | Dec 14-18th - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization

  16. SF6432-NI Fixed Price Contracts with the Newly Independent States of the Former Soviet Union

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

    Department Release Date: 11/17/15 Page 1 of 15 Printed copies of this document are uncontrolled. Retrieve latest version electronically. SANDIA CORPORATION SF 6432-NI (11/2015) SECTION II STANDARD TERMS AND CONDITIONS FOR FIXED PRICE CONTRACTS WITH THE NEWLY INDEPENDENT STATES OF THE FORMER SOVIET UNION THE FOLLOWING CLAUSES APPLY TO REQUESTS FOR QUOTATION AND CONTRACTS AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN

  17. SF6432-NI Fixed Price Contracts with the Newly Independent States of the Former Soviet Union

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

    NI (04/2015) SECTION II STANDARD TERMS AND CONDITIONS FOR FIXED PRICE CONTRACTS WITH THE NEWLY INDEPENDENT STATES OF THE FORMER SOVIET UNION THE FOLLOWING CLAUSES APPLY TO REQUESTS FOR QUOTATION AND CONTRACTS AS INDICATED UNLESS SPECIFICALLY DELETED, OR EXCEPT TO THE EXTENT THEY ARE SPECIFICALLY SUPPLEMENTED OR AMENDED IN WRITING IN THE SIGNATURE PAGE OR SECTION I. (CTRL+CLICK ON A LINK BELOW TO ADVANCE DIRECTLY TO THAT SECTION) ACCEPTANCE OF TERMS AND CONDITIONS APPLICABLE LAW ASSIGNMENT

  18. I' I OAK RIDGE NATIONAL LABORATORY OPERATED B Y UNION CARBIDE CORPORATION

    Office of Legacy Management (LM)

    / I' I OAK RIDGE NATIONAL LABORATORY OPERATED B Y UNION CARBIDE CORPORATION NUCLEAR DIVISION POST OFFICE BOK X OAK RIDGE, TENNESSEE 37830 August 21, 1979 Department of Energy, Oak Ridge Operations Attention: E. L. Keller, Director for Technical Services Division Post Office Box E Oak Ridge, Tennessee 37830 Gentlemen: Formerly Utilized Site-Remedial Action Program - Post Decontamination Radiological Survey of a portion of the Former Kellex Laboratory Site, Jersey City, New Jersey Decontamination

  19. November 17, 2009 HSS/Union Lead Checkpoint Meeting - Integrated Collaborative Oversight Concept

    Energy Savers [EERE]

    Collaborative Oversight (ICO) Concept Evolution - Emerged from Insights HSS Gained through: * Laboratory Sustainability Pilot Studies * Visiting Speaker Program * Union Focus Group Meetings ICO Concept Overview * Goals - Transition DOE into a better balance between oversight and reliable mission execution as a first step toward 21 st century governance - Maintain the health, safety, and security of DOE site workers and facilities - Create a highly competent process through inclusion *

  20. November 17, 2009 HSS/Union Lead Checkpoint Meeting on Integrated Collaborative Oversight - Agenda

    Energy Savers [EERE]

    10:30 - 11:30 pm EST FORS 7E-069 Union Leads: Ron Ault.................. ............... AFL-CIO Metal Trades Department Pete Stafford................................Building and Construction Trades Department Center for Construction Research & Training (BCTD CPWR) Chico McGill/Dennis Phelps...........International Brotherhood of Electrical Workers [IBEW] Tommy Fuller............................Sheet Metal Workers International Association [SMWIA] James Frederick/Doug Stephens........United

  1. DOE - Office of Legacy Management -- Union Carbide and Carbon Co - TN 10

    Office of Legacy Management (LM)

    Carbide and Carbon Co - TN 10 FUSRAP Considered Sites Site: Union Carbide and Carbon Co (TN.10) Designated Name: Alternate Name: Location: Evaluation Year: Site Operations: Site Disposition: Radioactive Materials Handled: Primary Radioactive Materials Handled: Radiological Survey(s): Site Status: This site is one of a group of 5 FUSRAP considered sites for which records are available that provide a reasonably complete historical account of their operations and relationship, if any, with MED/AEC

  2. OAK RIDGE NATIONAL LABORATORY OPER*TEO BY UNION CARBIDE CORPORATION

    Office of Legacy Management (LM)

    ~$ ., . .Y.' ~. : ' : ,,, OAK RIDGE NATIONAL LABORATORY OPER*TEO BY UNION CARBIDE CORPORATION NUCLEAR DIVISION ' . ' : .m POST OFFICE BOX X OAK RIDGE, TENNESSEE ,X,0 ,. June 20, 1980 .~ ,, M r. Arthur J. 'Whitman Environmental and Safety 'Engineering Division U.S. Department of Energy ,) Washington, Oit. 20545 ., Dear Art: Soil Sample Analysis, City of Woburn Landfill, Woburn, Massachusetts ,,During a.radiological survey of the old.and new city of Woburn landfills (i-e: trip report.to Woburn,

  3. May 19, 2011, HSS/Union Focus Group Meeting - Draft Work Group Matrix

    Office of Environmental Management (EM)

    06-22-11) WORK GROUPS HSS/ Union/ Stakeholder Leads Work Group Participants Improvement Issues/Goals Initial/Current Tasks Outputs 10 CFR 851 Pat Worthington CPWR USW Collectively work to ensure implementation of health and safety programs (851 Rule) within and among DOE site contractors to eliminate/minimize inconsistent requirements among M&I, M&O, LLC and SBA contractors/subcontractors. - Identify leads and participants - Develop charter - Goals/ Intended Output - Develop Task

  4. Marriage or Civil Unions for Single Cells and Metagenomics (Metagenomics Informatics Challenges Workshop: 10K Genomes at a Time)

    ScienceCinema (OSTI)

    Rusch, Doug [J. Craig Venter Institute

    2013-01-22

    JCVI's Doug Rusch on "Marriage or Civil Unions for Single Cells and Metagenomes" at the Metagenomics Informatics Challenges Workshop held at the DOE JGI on October 12-13, 2011.

  5. In Charlotte, Senior DOE Official to Amplify State of the Union, Call to Give Drivers More Options at the Pump

    Broader source: Energy.gov [DOE]

    Assistant Secretary for Energy Efficiency and Renewable Energy Dr. David Danielson will join officials from NASCAR and Sprint Corp. in Charlotte, N.C., to highlight the President’s State of the Union address

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

    SciTech Connect (OSTI)

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

    2014-05-07

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

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

    SciTech Connect (OSTI)

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

    2015-09-01

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

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

    SciTech Connect (OSTI)

    Zhang, X. Zou, L. K.

    2014-12-29

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

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

    SciTech Connect (OSTI)

    Srinivasan, B.; Shumlak, U.

    2011-09-15

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

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

    SciTech Connect (OSTI)

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

    2014-12-28

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

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

    SciTech Connect (OSTI)

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

    2014-08-18

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

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

    Energy Savers [EERE]

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

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

    SciTech Connect (OSTI)

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

    2011-10-15

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

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

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

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

    2015-06-11

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

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

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

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

    2015-06-11

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

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

    SciTech Connect (OSTI)

    Escobar, D.; Ahedo, E.

    2014-04-15

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

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

    SciTech Connect (OSTI)

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

    2014-08-04

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

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

    SciTech Connect (OSTI)

    Eric Fuchey

    2010-06-01

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

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

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

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

    2015-11-03

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

  20. Jefferson Lab: Student Affairs

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

    User Liaison Office HEP Home Student Affairs Calendar print version Student Information New Student Checklist Graduate Student Survey Users Group Education Opportunities Employment Opportunities Graduate Student Contacts GRE Practice Tests JLab Life Insider (Internal News) Computer Center Stockroom User Liaison Library & Publications On the Menu Local Community Local Restaurants Newport News Events Hampton Roads Events Hampton AMC Theater Student Opportunities Graduate Students

  1. Summer Student

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

    Summer Students Summer Student New Hires Employees and retirees are the building blocks of the Lab's success. Our employees get to contribute to the most pressing issues facing the nation. Contact (505) 667-4451, Option 6 Email Before you begin work, review the following guidance and complete outlined steps The new-hire process, including the official pre-arrival period, does not begin until you receive and accept your written offer letter. Pre-Arrival New Hire Process Benefit Options For your

  2. President Obama Talks Energy at the State of the Union 2013 | Department of

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

    Energy Obama speaks about energy independence, climate change, and investing in renewable energy and technology during the State of the Union on February 12, 2013. Amanda Scott Amanda Scott Former Managing Editor, Energy.gov How can I participate? Got questions about the energy section of last night's speech? Head to WhiteHouse.gov to dig in to speech line-by-line and respond. You can also ask question today at 4pm ET. Visit WhiteHouse.gov/live to chat with Heather Zichal, the Deputy

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

    SciTech Connect (OSTI)

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

    2015-07-17

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

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

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

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

    2015-07-17

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

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

    SciTech Connect (OSTI)

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

    2014-01-27

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

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

    SciTech Connect (OSTI)

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

    2013-01-01

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

  7. Student Spotlight

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

    Mekena McGrew Mekena McGrew First-year physics PhD student University of California, Merced Area of NIF: Advanced Radiographic Capability (ARC) Project: Created a Single-shot, Second Harmonic Generation Frequency Resolved Optical Gating (SHG FROG) system for damage testing Tell us about your work at NIF.FROG is a technique for characterizing ultra-short pulses. With them, we can measure pulse parameters, such as the pulse intensity, pulse width, spectrum, and spectral phase. It is important to

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

    SciTech Connect (OSTI)

    Clements, M; Wiesmeyer, M

    2014-06-15

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

  9. Jefferson Lab: Student Affairs

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

    Student Affairs Privacy and Security Notice Skip over navigation Search the JLab Site Higher Education Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is accessible to any browser. Concerns? User Liaison Office Student Affairs print version Student Information New Student Brochure New Student Checklist Graduate Student Survey Users Group Education Opportunities Employment Opportunities Graduate Student and Post

  10. Jefferson Lab - Student Affairs

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

    Graduate Student Association HEP Home Student Affairs Calendar print version Student Information New Student Checklist Graduate Student Survey Users Group Education Opportunities Employment Opportunities Graduate Student Contacts GRE Practice Tests JLab Life Insider (Internal News) Computer Center Stockroom User Liaison Library & Publications On the Menu Local Community Local Restaurants Newport News Events Hampton Roads Events Hampton AMC Theater Graduate Student Survey One goal of the JLab

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

    SciTech Connect (OSTI)

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

    2015-02-21

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

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

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

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

    2014-12-23

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

  13. How Science, Innovation, and Mikayla Nelson are Changing the State of Our Union

    Broader source: Energy.gov [DOE]

    The faces of America’s future success in science and engineering are everywhere. She might be the friendly employee at a neighborhood store... or be seated with the First Lady at the State of the Union. In the case of Mikayla Nelson, she’s both. Last night, the high school freshman from Billings, Montana was seated next to the First Lady. Mikayla earned her place there – as well as personal recognition from the President – by leading her team to a first place finish at the Department of Energy’s National Science Bowl for the design document of their solar car. During her visit to D.C., Mikayla came by the Department's headquarters and met with Secretary Steven Chu and Director of Science Bill Brinkman. She also answered a few questions about her experiences and inspirations.

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

    SciTech Connect (OSTI)

    Denison, K; Smith, S

    2014-06-15

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

  15. Undergraduate Student Program

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

    while they are pursuing an undergraduate degree. Contact Program Manager Scott Robbins Student Programs (505) 667-3639 Email Program Coordinator Emily Robinson Student...

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

    SciTech Connect (OSTI)

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

    2015-05-01

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

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

    SciTech Connect (OSTI)

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

    2014-10-06

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

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

    SciTech Connect (OSTI)

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

    2015-09-01

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

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

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

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

    2015-05-01

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

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

    SciTech Connect (OSTI)

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

    2014-05-26

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

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

    SciTech Connect (OSTI)

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

    2015-05-07

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

  2. United States-assisted studies on dose reconstruction in the former Soviet Union

    SciTech Connect (OSTI)

    Anspaugh, L.R.; Bouville, A.

    1995-12-01

    Following the Chernobyl accident, the US and the USSR entered into an agreement to work on the safety of civilian nuclear reactors; one aspect of that work was to study the environmental transport and health effects of radionuclides released by the accident. After the break-up of the USSR separate agreements were established between the US and Ukraine, Belarus, and Russia to continue work on dose reconstruction and epidemiologic studies of health effects from exposure to external radiation and the incorporation of radionuclides. Studies in Belarus and Ukraine related to the Chernobyl accident now emphasize epidemiologic: studies of childhood-thyroid cancer and leukemia, and eye-lens-cataract formation in liquidators. Supporting studies on dose reconstruction emphasize a variety of ecological, physical, and biological techniques. Studies being conducted in Russia currently emphasize health effects in the workers and the population around the Mayak Industrial Association. As this production complex is an analogue of the US Hanford Works, advantage is being taken of the US experience in conducting a similar, recently completed dose-reconstruction study. In all cases the primary work on dose reconstruction is being performed by scientists from the former Soviet Union. US assistance is in the form of expert consultation and participation, exchange visits, provision of supplies and equipment, and other forms of local assistance.

  3. Graduate, Undergraduate Student Travel

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

    Graduate, Undergraduate Travel Graduate, Undergraduate Student Travel Travel reimbursement process information for participants in the Graduate Research Assistant (GRA) and Undergraduate Student (UGS) programs Contact Travel Reservations (505) 667-1692 Email Student Travel (505) 667-5859 Email Graduate, undergraduate student travel process Travel by employees who participate in the Graduate Research Assistant (GRA) and Undergraduate Student (UGS) programs will be reimbursed only when the

  4. Wind Technology, Cost, and Performance Trends in Denmark, Germany, Ireland, Norway, the European Union, and the United States: 2007 - 2012; NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    Hand, Maureen

    2015-06-15

    This presentation provides a summary of IEA Wind Task 26 report on Wind Technology, Cost, and Performance Trends in Denmark, Germany, Ireland, Norway, the European Union, and the United States: 2007-2012

  5. In Texas, Energy Sec. Moniz to Echo President’s State of the Union Call to Foster Advanced Manufacturing and Innovation

    Broader source: Energy.gov [DOE]

    Secretary of Energy Ernest Moniz will travel to Austin and San Antonio, Texas to highlight the President’s State of the Union Address and the Administration’s efforts to foster innovation and advanced manufacturing

  6. September 16, 2008; HSS/Union Working Group Meeting, Former Worker and Energy Compensation Programs, CAIRS Reporting, Central Worker Data Tracking - Information Package

    Energy Savers [EERE]

    DOE Former Worker/Energy Compensation CAIRS Central Worker Data Tracking September 16, 2008 September 16, 2008 CAIRS Central Worker Data Tracking September 16, 2008 n The information contained in this package is intended to be reference materials pertaining to the September 16, 2008 HSS/Union working group meeting. The informational pieces have been retrieved from the Internet or submitted by HSS and Union representatives for inclusion in the package, and does not necessarily reflect the view,

  7. Exemplary Student Research Program | Argonne National Laboratory

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

    Exemplary Student Research Program 2013 Exemplary Student Research Program - Student Poster Presentations 1 of 6 2013 Exemplary Student Research Program - Student Poster...

  8. National Geothermal Student Competition

    Broader source: Energy.gov [DOE]

    The National Geothermal Student Competition will be an intercollegiate competition where student teams compete to advance the understanding of the potential for geothermal energy to supply a major component of the nations energy needs in the coming decades.

  9. Student Volunteer Internship Application

    Office of Energy Efficiency and Renewable Energy (EERE)

    U.S. Department of Energy (DOE) Energy Efficiency and Renewable Energy Student Volunteer Internship Program application.

  10. Bisfuel - Student conferences

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

    Student conferences 11 Apr 2013 Graduate students from the Bisfuel Center will take part in a student-focused conference exploring renewable energy research activities at ASU and U of A that will be held at University of Arizona on April 11-12, 2013. The conference will feature student talks and poster presentations on basic science of solar energy conversion and formation of chemical fuels from sunlight, development of new photovoltaic technologies, and new programs dealing with energy policy

  11. Student Internship Program

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

    Internship Program The NIF and Photon Science Directorate often has opportunities for undergraduate and graduate-level students to engage in cutting-edge scientific research to further their educational and research goals. The Student Internship Program can provide undergraduate and graduate students research opportunities in lasers, plasma physics, electro-optics, software development, and optical, x-ray, and nuclear instrument development and testing. Students work alongside scientists at

  12. Students (K-12)

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

    Students (K-12) Students (K-12) Our K-12 education programs' goal is to encourage students in Northern New Mexico to pursue science, technology, engineering and math careers. Contact Education Janelle Vigil-Maestas Community Relations & Partnerships (505) 665-4329 Email "When the going gets tough, encourage them to keep going." - LANL Director Charlie McMillan Student Challenge Opportunities High School Co-Op Program and Internship Opportunities at LANL LANL Foundation Scholarships

  13. Dependence of inverse-spin Hall effect and spin-rectified voltage on tantalum thickness in Ta/CoFeB bilayer structure

    SciTech Connect (OSTI)

    Kim, Sang-Il; Seo, Min-Su; Park, Seung-Young; Kim, Dong-Jun; Park, Byong-Guk

    2015-01-19

    Ta-layer thickness (t{sub Ta}) dependence of the measured DC voltage V from the inverse-spin Hall effect (ISHE) in Ta/CoFeB bilayer structure is experimentally investigated using the ferromagnetic resonance in the TE{sub 011} resonant cavity. The ISHE signals excluding the spin-rectified effect (SRE) were separated from the fitted curve of V against t{sub Ta}. For t{sub Ta} ≈ λ{sub Ta} (Ta-spin diffusion length = 2.7 nm), the deviation in ISHE voltage V{sub ISH} between the experimental and theoretical values is significantly increased because of the large SRE contribution, which also results in a large deviation in the spin Hall angle θ{sub SH} (from 10% to 40%). However, when t{sub Ta} ≫ λ{sub Ta}, the V{sub ISH} values are consistent with theoretical values because the SRE terms become negligible, which subsequently improves the accuracy of the obtained θ{sub SH} within 4% deviation. The results will provide an outline for an accurate estimation of the θ{sub SH} for materials with small λ value, which would be useful for utilizing the spin Hall effect in a 3-terminal spintronic devices in which magnetization can be controlled by in-plane current.

  14. Shockley-Read-Hall recombination in pre-filled and photo-filled intermediate band solar cells

    SciTech Connect (OSTI)

    Mayani, Maryam Gholami; Reenaas, Turid Worren

    2014-08-18

    In this work, we study how Shockley-Read-Hall (SRH) recombination via energy levels in the bandgap, caused by defects or impurities, affects the performance of both photo-filled and pre-filled intermediate band solar cells (IBSCs). For a pre-filled cell, the IB is half-filled in equilibrium, while it is empty for the photo-filled cell in equilibrium. The energy level, density, and capture cross-sections of the defects/impurities are varied systematically. We find that the photo-filled cells are, in general, less efficient than pre-filled cells, except when the defect level is between the conduction band and the IB. In that case, for a range of light intensities, the photo-filled cell performs better than the pre-filled. When the defect level is at the same energy as the IB, the efficiency is above 82% of the defect-free case, when less than 50% of the states at the IB lead to SRH recombination. This shows that even if SRH recombination via the IB takes place, high efficiencies can be achieved. We also show that band gap optimization can be used to reduce the SRH recombination.

  15. Graduate Student Research Fellowship

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

    Research Fellowship Graduate Student Research Fellowship Point your career towards Los Alamos Lab: work with the best minds on the planet in an inclusive environment that is rich in intellectual vitality and opportunities for growth. Contact Student Programs (505) 665-0987 Email The Department of Energy's (DOE) Office of Science is pleased to announce that the Office of Science Graduate Student Research (SCGSR) program is now accepting applications for the 2016 Solicitation 1. Applications are

  16. NEUP Student Resources

    Broader source: Energy.gov [DOE]

    Through the Integrated University Program, The Department of Energy is awarding $5 million for 39 undergraduate scholarships and 31 graduate fellowships to students in nuclear energy-related...

  17. Success stories spur students

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

    Success Stories Spur Students Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: Dec. 2015-Jan. 2016 all issues All Issues...

  18. Jefferson Lab - Student Affairs

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

    Graduate Student Association Header Please upgrade your browser. This site's design is only visible in a graphical browser that supports web standards, but its content is...

  19. Students (K-12)

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

    programs' goal is to encourage students in Northern New Mexico to pursue science, technology, engineering and math careers. Contact Education Janelle Vigil-Maestas...

  20. Ombuds Services for Students

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

    access only Ombuds Program Anonymous Help Line Mediation Self Help Resources Standards, Ethics Students Tech Transfer Ombuds RELATED NEWS Nanoscale, multidimensional artificial...

  1. Undergraduate Students | Photosynthetic Antenna Research Center

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

    Undergraduate Students Undergraduate Students Jieun Yim Undergraduate Student Read more about Jieun Yim Jared Ross Undergraduate Student Read more about Jared Ross Ryan...

  2. Past College Student Interns

    Broader source: Energy.gov [DOE]

    Since 2002, the U.S. Department of Energy college student internship program has provided more than 30 Native American undergraduate and graduate students with first-hand experience working on tribal renewable energy projects and direct exposure to issues concerning tribal renewable energy technology use and application.

  3. Student Summer Internships at NERSC

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

    Student Summer Internships at NERSC Student Summer Internships at NERSC March 9, 2011 by Francesca Verdier NERSC has internship positions in cloud computing, data focused science,...

  4. Town Hall Questions Answered

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

    effective dose from intakes. Q. Has there been any investigation into people stopping fracking area around WIPP? A. There is no drilling allowed on the 16-square-mile WIPP Land...

  5. Hall_A

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

  6. Hall_B

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

    N∆ Transition Form Factor & Multipoles The CEBAF Large Acceptance Spectrometer (CLAS) www.jlab.org K. Joo et al., Phys. Rev. Lett. 88 (2002) 122001 F.X. Girod et al. (CLAS Collaboration), Phys. Rev. Lett. 100 (2008) 162002 L. El Fassi et al. (CLAS Collaboration), submitted for publication (2011

  7. Hall_C

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

  8. Hall_D

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

    Dudek et al., Hadron Spectrum Collab. PRD 82:034508 (2010)

  9. Deck Those Halls!

    Broader source: Energy.gov [DOE]

    Preparing to decorate your home for the holiday season? Consider LED lighting as an energy-efficient option.

  10. WORKFORCE DIVERSITY TOWN HALL

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

    ... and Executive Order 13078 of March 13, 1998 (Increasing Employment of Adults With Disabilities), sought to tap the skills of the millions of Americans living with disabilities. ...

  11. Education - Students | Jefferson Lab

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

    A Physics Fest At Jefferson Lab Jefferson Lab offers Physics Fests to the general public and schools. These are events where fun experiments are demonstrated to explain science. A D D I T I O N A L L I N K S: Student Zone About Atoms Games & Puzzles Virginia SOL Education Events Frostbite Theater top-right bottom-left-corner bottom-right-corner Education - Students Welcome to Jefferson Lab's Student Zone. From here you can find a variety of resources that will expand your knowledge and

  12. Student Trainee (Legal Assistant)

    Broader source: Energy.gov [DOE]

    This position is being filled under the Pathways Internship Program. The program is designed to provide students enrolled in a wide variety of educational institutions, from high school to graduate...

  13. Student Trainee (Accounting)

    Broader source: Energy.gov [DOE]

    The Department of Energy (DOE), Office of Science (SC), Integrated Support Center - Chicago (ISC-CH), Office of the Chief Financial Officer (CR) Pathways Internship is designed to provide students...

  14. RECS student sequestration program

    SciTech Connect (OSTI)

    2007-12-31

    The 2007 Research Experiment in Carbon Sequestration (RECS) met at the Montana State University (MSU) and a variety of field sites over the 10-day period of July 29 - Aug 10. This year's group consisted of 17 students from graduate and doctoral programs in the United States and Canada, as well as early career professionals in fields related to carbon mitigation. Appropriately, because greenhouse gas reduction and storage is a global problem, the group included seven international students, from France, Iran, Paraguay, Turkey, Russia and India. Classroom talks featured experts from academia, government, national laboratories, and the private sector, who discussed carbon capture and storage technologies and related policy issues. Then, students traveled to Colstrip, Montana to visit PPL Montana's coal-fired power plant and view the local geology along the Montana/Wyoming border. Finally, students spent several days in the hands-on work at ZERT, using carbon dioxide detection and monitoring equipment. 1 photo.

  15. Education - Students | Jefferson Lab

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

    About Nuclear Physics Education - Students Pulse Laser Deposit Hadware Research at Jefferson Lab leads to the development of technology that has practical applications, such as pulse laser deposit hardware

  16. Student Trainee (Auditing)

    Broader source: Energy.gov [DOE]

    Our internship program provides students the opportunity to gain first-hand experience in a federal agency while learning more about the energy industry and gaining exposure to the Commissions work...

  17. Students | Argonne National Laboratory

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

    Apply for a Job Connect with Argonne LinkedIn Facebook Twitter YouTube Google+ More Social Media » Students Interested in exploring what it would be like to work at a national laboratory? If you are a student in science, technology, engineering or math, you can find out more at Argonne. Through summer and school semester research opportunities, you can discover what being an innovative, groundbreaking scientist or engineer means. Learn More Pre-College Research Participation Program Internship

  18. Division Student Liaisons

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

    Student Liaisons 2015 OFFICE Division Student Liaison Work # Email MailStop DIRECTOR'S OFFICE Principal Associate Directors PADSTE, PADWP, PADGS, PADOPS, PADCAP Associate Directors ADCLES, ADE, ADEPS, ADTSC --- PADSTE ADPSM, ADW, ADX --- PADWP ADTIR ---PADGS ADBI, ADESH, ADNHHO, ADSS --- PADOPS ADEP, ADPM --- PADCAP Audits & Ethics (EA-DO) Tonie V. Baros 665-3104 barost@lanl.gov A249 Chief Prime Contracts (PCM-DO) None Comm. & Public. Affairs (CGA-DO) CPA-CAS: Comm. Arts & Services

  19. Student Internship Program

    Energy Savers [EERE]

    It's Cool to be "Green" & Native TEP Internship Program Sandra Begay-Campbell Principal Member of the Technical Staff Sandia is a multiprogram laboratory operated by Sandia Corporation, a Lockheed Martin Company, for the United States Department of Energy under contract DE-AC04-94AL85000. DOE's Tribal Energy Program offers student internships at Sandia National Laboratories since 2003. Eligibility: Current college upper-classmen and graduate students, who are familiar with Native

  20. Graduate Students | Photosynthetic Antenna Research Center

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

    Graduate Students Graduate Students Wu Zhiyuan Graduate Student Read more about Wu Zhiyuan Guy Mayneord Graduate Student Read more about Guy Mayneord Bryan Fry Graduate Student Read more about Bryan Fry Benjamin Wolf Graduate Student Read more about Benjamin Wolf Jeremy King Graduate Student Read more about Jeremy King Hui-Yuan Chen Graduate Student Read more about Hui-Yuan Chen Nathan Soulier Graduate Student Read more about Nathan Soulier Ming-Yang Ho Graduate Student Read more about Ming-Yang

  1. Argonne's Exemplary Student Research Program | Argonne National Laboratory

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

    Exemplary Student Research Program Share

  2. Basic Plasma Science | Princeton Plasma Physics Lab

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

    Basic Plasma Science Key Laboratory projects include the study of Hall thrusters that satellites and space probes use for propulsion. PPPL's Hall Thruster Experiment (HTX) strives to understand the physics of Hall thrusters and related systems that expel plasma as a propellant. Hall thrusters originated in the Soviet Union in the 1960s and research and development are carried out today in the United States, the European Union, Russia, Japan, Korea and China. PPPL research has expanded knowledge

  3. Single-valley quantum Hall ferromagnet in a dilute MgxZn1-xO/ZnO strongly correlated two-dimensional electron system

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

    Kozuka, Y.; Tsukazaki, A.; Maryenko, D.; Falson, J.; Bell, C.; Kim, M.; Hikita, Y.; Hwang, H. Y.; Kawasaki, M.

    2012-02-03

    We investigate the spin susceptibility (g*m*) of dilute two-dimensional (2D) electrons confined at the MgxZn1-xO/ZnO heterointerface. Magnetotransport measurements show a four-fold enhancement of g*m*, dominated by the increase in the Land 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 thatmorethe ZnO 2D system is ideal for investigating the effect of electron correlations in the QH regime.less

  4. Highly tunable quantum Hall far-infrared photodetector by use of GaAs/Al{sub x}Ga{sub 1?x}As-graphene composite material

    SciTech Connect (OSTI)

    Tang, Chiu-Chun [Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Ling, D. C. [Department of Physics, Tamkang University, Tamsui Dist., New Taipei City 25137, Taiwan (China); Chi, C. C.; Chen, Jeng-Chung [Department of Physics, National Tsing Hua University, Hsinchu 30013, Taiwan (China); Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu 30013, Taiwan (China)

    2014-11-03

    We have developed a highly tunable, narrow band far-infrared (FIR) photodetector which utilizes the characteristic merits of graphene and two-dimensional electron gas (2DEG) in GaAs/Al{sub x}Ga{sub 1?x}As heterostructure in the Quantum Hall states (QHS). The heterostructure surface is covered with chemical vapor-deposited graphene, which functions as a transparent top-gate to vary the electron density of the 2DEG. FIR response observed in the vicinity of integer QH regime can be effectively tuned in a wide range of 27102?cm{sup ?1} with a bias voltage less than ?1?V. In addition, we have found that the presence of graphene can genuinely modulate the photoresponse. Our results demonstrate a promising direction for realizing a tunable long-wavelength FIR detector using QHS in GaAs 2DEG/ graphene composite material.

  5. First-principles study on the relationship between magnetic anisotropy and anomalous Hall effect of bct-Fe{sub 50}Co{sub 50}

    SciTech Connect (OSTI)

    Hyodo, Kazushige Sakuma, Akimasa; Kota, Yohei

    2014-05-07

    We studied quantitative relationship between the intrinsic anomalous Hall conductivity (σ{sub xy}) and the uniaxial magnetic anisotropy constant (K{sub u}) of bct-Fe{sub 50}Co{sub 50} using first-principles calculation because these quantities originate from spin-orbit interaction. We found that the obtained σ{sub xy} and K{sub u} with changing the axial ratio c/a (1≤c/a≤√(2)) exhibit similar behavior mainly arising from the common band mixing of the minority-spin d{sub xy} and d{sub x{sup 2}−y{sup 2}} states near the Fermi level which is sensitive to c/a.

  6. Observation of the inverse spin Hall effect in ZnO thin films: An all-electrical approach to spin injection and detection

    SciTech Connect (OSTI)

    Prestgard, Megan C.; Tiwari, Ashutosh

    2014-03-24

    The inverse spin Hall effect (ISHE) is a newly discovered, quantum mechanical phenomenon where an applied spin current results in the generation of an electrical voltage in the transverse direction. It is anticipated that the ISHE can provide a more simple way of measuring spin currents in spintronic devices. The ISHE was first observed in noble metals that exhibit strong spin-orbit coupling. However, recently, the ISHE has been detected in conventional semiconductors (such as Si and Ge), which possess weak spin-orbit coupling. This suggests that large-spin orbit coupling is not a requirement for observing the ISHE. In this paper, we are reporting the observation of the ISHE in an alternative semiconductor material, zinc oxide (ZnO) using all-electrical means. In our study, we found that when a spin-polarized current is injected into the ZnO film from a NiFe ferromagnetic injector via an MgO tunnel barrier layer, a voltage transverse to both the direction of the current as well as its spin-polarization is generated in the ZnO layer. The polarity of this voltage signal was found to flip on reversing the direction of the injected current as well as on reversing the polarization of the current, consistent with the predictions of the ISHE process. Through careful analysis of the ISHE data, we determined a spin-Hall angle of approximately 1.651 × 10{sup −2} for ZnO, which is two orders of magnitude higher than that of silicon. Observation of a detectable room-temperature ISHE signal in ZnO via electrical injection and detection is a groundbreaking step that opens a path towards achieving transparent spin detectors for next-generation spintronic device technology.

  7. Undergraduate Students | Photosynthetic Antenna Research Center

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

    Undergraduate Students Undergraduate Students Ingrid Archibald Undergraduate Student E-mail: ingridarchibald@wustl.edu Divya Babbula Undergraduate Student E-mail: divya.babbula@wustl.edu Hannah Behar Undergraduate Student Sasha Berger Undergraduate Student E-mail: sashaberger@wustl.edu Stephanie Botkin E-mail: stephanie.botkin@wustl.edu Kyle Cepeda Undergraduate Student E-mail: kcepeda@wustl.edu Maya Dehart Undergraduate Student E-mail: mayadehart@wustl.edu Andrew Ells Undergraduate Student

  8. Secretary Chu and Deputy Secretary of Energy Poneman to Highlight...

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

    upgrade at the Texas Medical Center, and host a State of the Union Town Hall with ... Vice President - Fayetteville Shale Division, from Southwestern Energy will host the tour. ...

  9. Franklin County, Virginia: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    Ferrum, Virginia North Shore, Virginia Penhook, Virginia Rocky Mount, Virginia Union Hall, Virginia Westlake Corner, Virginia Retrieved from "http:en.openei.orgw...

  10. Talk to Secretary Chu Live This Wednesday

    Broader source: Energy.gov [DOE]

    After the State of the Union address this week, Secretary Steven Chu will host an online town hall to discuss President Obama's clean energy agenda.

  11. Local High School Students Tour NERSC

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

    Local High School Students Tour NERSC Local High School Students Tour NERSC Outreach educates students about careers in scientific computing February 17, 2015 Oaktech-bashor.jpg...

  12. Student Internship Programs Program Description

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

    for a summer high school student to 75,000 for a Ph.D. student working full-time for a year. Program Coordinator: Scott Robbins Email: srobbins@lanl.gov Phone number: 663-5621...

  13. Student Internship Programs Program Description

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

    Student Internship Programs Program Description The objective of the Laboratory's student internship programs is to provide students with opportunities for meaningful hands- on experience supporting educational progress in their selected scientific or professional fields. The most significant impact of these internship experiences is observed in the intellectual growth experienced by the participants. Student interns are able to appreciate the practical value of their education efforts in their

  14. at American Geophysical Union

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

    are often associated with environments that provide excellent support for microbial life. Because of this, the science team agreed to make a rare backtrack to investigate it...

  15. 2015 Hydrogen Student Design Contest Challenges Students to Develop...

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

    finance, engineering, public planning, architecture, marketing, and entrepreneurship. ... A full description of prize packages can be found online. Students interested in ...

  16. Measurement of XeI and XeII velocity in the near exit plane of a low-power Hall effect thruster by light induced fluorescence spectroscopy

    SciTech Connect (OSTI)

    Dancheva, Y.; Biancalana, V.; Pagano, D.; Scortecci, F.

    2013-06-15

    Near exit plane non-resonant light induced fluorescence spectroscopy is performed in a Hall effect low-power Xenon thruster at discharge voltage of 250 V and anode flow rate of 0.7 mg/s. Measurements of the axial and radial velocity components are performed, exciting the 6s{sup 2}[3/2]{sub 2}{sup o}{yields}6p{sup 2}[3/2]{sub 2} transition at 823.16 nm in XeI and the 5d[4]{sub 7/2}{yields}6p[3]{sub 5/2}{sup o} transition at 834.724 nm in XeII. No significant deviation from the thermal velocity is observed for XeI. Two most probable ion velocities are registered at a given position with respect to the thruster axis, which are mainly attributed to different areas of creation of ions inside the acceleration channel. The spatial resolution of the set-up is limited by the laser beam size (radius of the order of 0.5 mm) and the fluorescence collection optics, which have a view spot diameter of 8 mm.

  17. IEA Wind Task 26. Wind Technology, Cost, and Performance Trends in Denmark, Germany, Ireland, Norway, the European Union, and the United States: 2007–2012

    SciTech Connect (OSTI)

    Vitina, Aisma; Lüers, Silke; Wallasch, Anna-Kathrin; Berkhout, Volker; Duffy, Aidan; Cleary, Brendan; Husabø, Lief I.; Weir, David E.; Lacal-Arántegui, Roberto; Hand, Maureen; Lantz, Eric; Belyeu, Kathy; Wiser, Ryan H; Bolinger, Mark; Hoen, Ben

    2015-06-01

    The International Energy Agency Implementing Agreement for cooperation in Research, Development, and Deployment of Wind Energy Systems (IEA Wind) Task 26—The Cost of Wind Energy represents an international collaboration dedicated to exploring past, present and future cost of wind energy. This report provides an overview of recent trends in wind plant technology, cost, and performance in those countries that are currently represented by participating organizations in IEA Wind Task 26: Denmark, Germany, Ireland, Norway, and the United States as well as the European Union.

  18. NREL: Education Center - Student Programs

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

    Student Programs Engaging students in science and engineering activities opens the door for study and career opportunities in science, technology, engineering, and mathematics (STEM) disciplines. NREL offers a range of activities for elementary school, middle school, high school, and college students. Our goal is to capture the imagination and curiosity of young scholars and encourage them to pursue careers in science and engineering. To schedule or ask about a program, contact the Education

  19. Retired supercomputers enable student research

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

    Retired supercomputers enable student research Retired supercomputers enable student research Decommissioned supercomputers give systems researchers and students a one-of-a-kind, hands-on lab to learn computational science. October 20, 2012 image description Los Alamos National Laboratory Director Charlie McMillan talks with Andree Jacobson of the New Mexico Consortium in the Parallel Reconfigurable Observational Environment (PRObE) machine room. CONTACT Fred deSousa Communications Office (505)

  20. Welcoming the Laboratory's summer students

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

    2016 all issues All Issues submit Welcoming the Laboratory's summer students A personal message from Alan Bishop, Principal Associate Director for Science, Technology, and...

  1. Adding Students and Multiplying Scientists

    Broader source: Energy.gov [DOE]

    This month, students across the country will begin competing in regional contests for the chance to attend the National Science Bowl in Washington, D.C.

  2. Making Connections for Atlanta Students

    Broader source: Energy.gov [DOE]

    The Atlanta Students in Energy and Climate Forum, held in April 2013, brought together entrepreneurs, and professors to share experiences and motivations in their pursuit of environmental stewardship.

  3. ORISE: Graduate Student Research Experiences

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

    The diverse collection of programs available to graduate students meet a variety of needs across many different career paths. Experiences of graduate participants are...

  4. Challenge Home Student Design Competition

    Broader source: Energy.gov [DOE]

    Check out student designs of zero energy ready homes -- homes that are so efficient they can produce as much energy as the use with a renewable energy system.

  5. Current Students | The Ames Laboratory

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

    fall semester Aug. 24. The students are, left to right, Kathryn White, Shannon Goes, Kaiser Aguirre, and Adam Dziulko. Welcome 2015 fall semester Science Undergraduate Laboratory...

  6. DOE Challenge Home Student Competition

    Broader source: Energy.gov [DOE]

    This document outlines plans for the DOE Challenge Homes Student Competition, which will complement the Solar Decathlon, and launch in 2014.

  7. Graduate Students | Photosynthetic Antenna Research Center

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

    People / Graduate Students Graduate Students Sam Barnett Graduate Student E-mail: sbarnett1@sheffield.ac.uk Angela Barragan Graduate Student E-mail: ambarrag@gmail.com Hui-Yuan Chen Graduate Student E-mail: chen.hui-yuan@wustl.edu Jack Chidgey Graduate Student E-mail: j.chidgey@sheffield.ac.uk Kaitlyn Faries Kaitlyn Faries Graduate Student E-mail: kaitlyn.faries@wustl.edu Phone: 314.935.6566 Bryan Fry Graduate Student E-mail: bryanfry@mail.med.upenn.edu Kirsty Hacking Graduate Student E-mail:

  8. ORISE: K-12 Student and Teacher Research Experiences

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

    Fellowships Overview Undergraduates Graduate Students Recent Graduates Postdocs Faculty K-12 Students & Teachers Research Experiences Overview Undergraduates Graduate Students...

  9. ORISE: DOE EERE National Geothermal Student Competition

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

    National Geothermal Student Competition Mentor Training Center for Science Education Internships, Scholarships and Fellowships Overview Undergraduates Graduate Students Recent Graduates Postdocs Faculty K-12 Students & Teachers Research Experiences Overview Undergraduates Graduate Students Recent Graduates Postdocs Faculty K-12 Research Teams How ORISE is Making a Difference Overview Postdoc Fellowships in Energy Efficiency and Renewable Energy Stay Rates Impact of Foreign Students ORNL

  10. Minority Educational Institution Student Partnership Program (MEISPP) |

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

    Department of Energy Development » Minority Educational Institution Student Partnership Program (MEISPP) Minority Educational Institution Student Partnership Program (MEISPP) Our Minority Educational Institution Student Partnership Program (MEISPP) offers talented undergraduate and graduate students summer internship positions with the Department of Energy and our National Laboratories, with the goal of reaching underrepresented students in STEM fields, such as women and girls. Positions

  11. 2014MSMap

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

    OFFICE & LAB BLDG PHYSICS HALL WILHELM HALL FRILEY HALL HELSER HALL UNION DRIVE BISSELL ROAD U N I O N D R I V E BEYER COURT UNIO N DRIVE OSBORN DRIVE COMMUNICATIONS BUILDING MOLECULAR BIOLOGY BUILDING METALS DEVELOPMENT BUILDING GENETICS LAB INSECTARY SCIENCE HALL II SCIENCE HALL LAGOMARCINO HALL M E C H . M A IN T . B U IL D IN G P R IN T IN G A N D P U B L IC A T IO N S LIBRARY STORAGE FACILITY ADMINISTRATIVE SERVICES BLDG WANDA DALEY DRIVE STANGE ROAD HORSE BARN RUMINANT NUTRITION LAB

  12. 2015 Race to ZERO Student Design Competition

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy (DOE) Race to Zero Student Design Competition (Race to Zero) is engaging undergraduate students, graduate students, and university faculty to become part of a new...

  13. Student Poster Competition flyer | Department of Energy

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

    Student Poster Competition flyer Student Poster Competition flyer PDF icon 2016 DOE RD Workshop Student Poster Contest Flyer.pdf More Documents & Publications December 2015 Postings February 2015 Postings 2016 DOE SSL R&D Workshop Agenda

  14. Local High School Students Tour NERSC

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

    Local High School Students Tour NERSC Local High School Students Tour NERSC Outreach educates students about careers in scientific computing February 17, 2015 Oaktech-bashor.jpg Jon Bashor, computing sciences' communications manager, gives students an inside look at supercomputing. Last week, two groups of students from East Bay high schools descended on the Oakland Scientific Facility to learn more about supercomputing and networking. On Wednesday, Feb. 11, 30 students from a computer science

  15. Student Temporary Employment Program | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration Federal Employment / Our Jobs / Opportunities for Students / Student Temporary Employment Program Student Temporary Employment Program The Student Temporary Employment Program (STEP) is the perfect work-study combination for high school through graduate school students. Opportunities range from full-time summer employment to positions that can last for as long as you are a student. You might work part-time when school is in session and full-time during semester and summer

  16. Student Programs and Internships | Department of Energy

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

    The Student Temporary Employment Program (STEP) provides maximum flexibility because the nature of the work does not have to be related to the student's academic or career choice. ...

  17. ORISE: DOE EERE National Geothermal Student Competition

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

    for Science Education U.S. Department of Energy Office of Energy Efficiency and Renewable Energy National Geothermal Student Competition 2013 National Geothermal Student...

  18. Research Affiliate Associates & Students | Photosynthetic Antenna...

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

    Affiliate Associates & Students Research Affiliate Associates & Students Michal Gwizdala Postdoctoral Research Associate E-mail: m.s.gwizdala@vu.nl Atsuko Kanazawa Research...

  19. Computer Science and Information Technology Student Pipeline

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

    Science and Information Technology Student Pipeline Program Description Los Alamos ... Students are provided a mentor and challenging projects to demonstrate their capabilities ...

  20. NREL: Education Programs - K-12 Students

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

    K-12 Students NREL's Education Programs seek to promote science, mathematics, and technology education using renewable energy as the vehicle to capture student interest. Engaging...

  1. Intelligence Community Student Opportunities (Virtual Information Session)

    Broader source: Energy.gov [DOE]

    Attendees: Students interested in intelligence internship opportunities Participating Office: Office of Intelligence and Counter-Intelligence POC: Kevin Kremer (IN) Supports: Student Employment Program

  2. New LANL scholarship supports returning students

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

    a new type of scholarship that will include nontraditional students, a student demographic that continues to grow. "This new scholarship opportunity is something our donors...

  3. Solar Energy Education. Industrial arts: student activities....

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

    Industrial arts: student activities. Field test edition Citation Details In-Document Search Title: Solar Energy Education. Industrial arts: student activities. Field test edition ...

  4. Environmental Report Project Transforms Students into Informed...

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

    Students into Informed Stakeholders June 20, 2014 - 9:49am Addthis Portsmouth Gaseous Diffusion Plant Site Lead Joel Bradburne, left, is pictured with faculty, staff and students...

  5. 2012 National Geothermal Student Competition Finalists

    Broader source: Energy.gov [DOE]

    Eight university teams have been selected to compete in the Energy Department's 2012 National Geothermal Student Competition. This student competition challenges teams at universities across the...

  6. Zero Student Design Competition Guide

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

    Race to Zero Student Design Competition | 1 2016 U.S. Department of Energy Race to Zero Student Design Competition Guide August 2015 FOREWORD Race to Zero Student Design Competition | 2 FOREWORD This is an exciting time-a time when zero energy ready homes have become readily achievable and cost-effective. By definition, these high-performance homes are so energy efficient that renewable power can offset all or most of their annual energy consumption. The U.S. Department of Energy (DOE) Race to

  7. Student Trainee (Business/Industry)

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy, Office of Science Pathways Internship is designed to provide students enrolled in a wide variety of educational institutions, from high school to graduate level, with...

  8. H2 Educate! Student Guide

    Fuel Cell Technologies Publication and Product Library (EERE)

    H2 Educate! Teacher and Student Guides - These new guides were developed by the National Energy Education Development (NEED) Project's Teacher Advisory Board for the DOE Hydrogen Program. Sentech, Inc

  9. Competition Challenges Student-Entrepreneurs

    Broader source: Energy.gov [DOE]

    Students and aspiring entrepreneurs from Ohio University in Chillicothe and Shawnee State University in Portsmouth recently went head-to-head in a Regional Business “Pitch” Competition sponsored by DOE.

  10. H2 Educate Student Guide

    Office of Energy Efficiency and Renewable Energy (EERE)

    This H2 Educate Student Guide provides information about hydrogen energy and was developed by the National Energy Education Development (NEED) Project for the U.S. Department of Energy's Hydrogen Program.

  11. EERE RESOURCES FOR UNDERGRADUATE STUDENTS

    Office of Environmental Management (EM)

    RESOURCES FOR UNDERGRADUATE STUDENTS Looking to expand your experience outside of the classroom? The Office of Energy Efficiency and Renewable Energy (EERE) at the U.S. Department of Energy (DOE) has a number of resources available for undergraduate students, including competitions, internships, and career-planning information to help you navigate the education-to-employment pathway in energy. The following is a partial list of the undergraduate activities and programs that are offered. For a

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

    Office of Scientific and Technical Information (OSTI)

    Date: 2013-02-01 OSTI Identifier: 1102031 Type: Publisher's Accepted Manuscript Journal Name: Physical Review Letters Additional Journal Information: Journal Volume: 110;...

  13. 2015 Student Employment Brochure | Department of Energy

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

    5 Student Employment Brochure 2015 Student Employment Brochure This year's brochure listing the veriest programs with in the Department of Energy for students and recent graduates. PDF icon Student Employment Brochure_2015.pdf More Documents & Publications MICKEY LELAND ENERGY FELLOWSHIP 2016 FLYLER Powerpoint on STEM Programs 2016 MEISPP Flyer

  14. Sandia National Laboratories: Careers: Students and Postdocs

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

    Careers Students and Postdocs photo of student Internship & Co-ops Internships Home Technical Institute Programs Intern Benefits How to Apply Intern FAQs Picture of student Fellowships Fellowships Home Fellowship Experiences Critical Skills Master's Program Master's Fellowship Program Truman Fellowship Picture of student Postdoctoral Positions Connect with leaders in your field, and advance your career. Learn more Picture of student Interested in a career at Sandia? Are you looking for

  15. Hispanic Student Programs | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Student Jobs / Hispanic Student Programs Hispanic Student Programs Universities across the country host high school students participating in the Hispanic Youth Symposium. Please visit the Hispanic Youth Symposium website for university locations and instructions on how to apply. NNSA's STEM-related internships for Hispanic college or graduate school students are located in Washington D.C., Texas, New Mexico, California, Nevada, and Tennessee. For information on how to apply, please visit NNSA

  16. For Students and Teachers | Department of Energy

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

    For Students and Teachers For Students and Teachers For Students and Teachers For College Students Mickey Leland Energy Fellowship Program. The Office of Fossil Energy offers summer internships for students who are pursuing degrees in science, technology (IT), engineering, or mathematics (STEM majors). Research Experience in Carbon Sequestration. The intensive 10-day, interactive program combines classroom instruction with group exercises, CCUS site visits and hands-on field activities that

  17. Student Programs and Internships | Department of Energy

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

    Student Programs and Internships Student Programs and Internships Student Internships These student programs allow participants taking at least a half-time academic, technical, or vocational course load in an accredited high school, technical, vocational, two- or four- year college or university, graduate or professional school to be part of a cooperative-learning environment. The program is comprised of two different types of paid internships: The Student Temporary Employment Program (STEP)

  18. Multi-Probe Diagnostic Hall

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

    related to Los Alamos National Laboratory's national security science mission. Molecular dynamics Molecular dynamics simulations are used to model solid-solid phase...

  19. Regular, Postdoc and Student Hires

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

    Regular, Postdocs, Students Regular, Postdoc and Student Hires Employees and retirees are the building blocks of the Lab's success. Our employees get to contribute to the most pressing issues facing the nation. Contact Us (505) 667-4451, Option 5 Email The New Hire process, including the official pre-arrival period, does not begin until you receive and accept your written offer letter. Pre-Arrival New Hire Process Benefit Options For your convenience, download the New Employee App from iTunes

  20. Thermodynamics Student Guide (6 Activities) | Department of Energy

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

    Student Guide (6 Activities) Thermodynamics Student Guide (6 Activities) Information about Thermodynamics, six student activities on energy basics for grades 5-8 and 9-12....

  1. Media invited to join students in crystallography experiment

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

    Media invited to join students in crystallography experiment Media invited to join students in crystallography experiment The student outreach effort is part of the events...

  2. Students analyze artificial implants at ASM Materials Camp |...

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

    Students analyze artificial ... Students analyze artificial implants at ASM Materials Camp Posted: June 10, 2013 - 8:37am Student Hunter Stombaugh loads a material sample into the...

  3. Primary Science of Energy Teacher and Student Guides (42 Activities...

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

    Teacher and Student Guides (42 Activities) Primary Science of Energy Teacher and Student Guides (42 Activities) Below is information about the student activitylesson plan from...

  4. Primary Science of Energy Student Guide (42 Activities) | Department...

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

    Student Guide (42 Activities) Primary Science of Energy Student Guide (42 Activities) Information about Primary Science of Energy, 42 student activities on energy basics for grades...

  5. The Harnessed Atom- Student Edition

    Broader source: Energy.gov [DOE]

    The Harnessed Atom is a middle school science, technology, engineering, and math (STEM) curriculum extension that focuses on nuclear science and energy. It is designed to provide students with accurate, unbiased, and up-to-date information on the roles that energy and nuclear science play in our lives. The curriculum includes essential principles and fundamental concepts of energy science.

  6. Students gain work experience at WIPP

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

    Students Gain Work Experience at WIPP CARLSBAD, N.M., January 10, 2000 -- Students from two Eddy County high schools are gaining valuable experience by spending time with employees...

  7. Hydro Research Program Seeking Graduate Student Applicants

    Broader source: Energy.gov [DOE]

    The Hydro Research Foundation is now accepting graduate student applications for its DOE-funded graduate student research program. The Hydro Research Awards Program is designed to spur innovation...

  8. Boosting Native American students' math scores

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

    Boosting Native American students' math scores Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:Mar. 2016 all issues All Issues » submit Boosting Native American students' math scores Professional development opportunities for teachers provide essential foundation May 5, 2014 Mara Herrera teaches a young student at San Felipe Pueblo Elementary School. Mara Herrera teaches a young student at San Felipe Pueblo Elementary School. Contact

  9. Youth/Student Opportunities | Department of Energy

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

    Youth/Student Opportunities Youth/Student Opportunities George Washington University Environmental Resource Policy Graduate Program Capstone Project - "The Capstone Course is a partnership between the Department and George Washington University. The course provides students in the Environmental Resource Policy Graduate Program hands-on experience analyzing current environmental and energy issues and identifying recommendations or strategies for the Department. The students earn three

  10. Minority Educational Institution Student Partnership Program (MEISPP) |

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

    Department of Energy Minority Educational Institution Student Partnership Program (MEISPP) Minority Educational Institution Student Partnership Program (MEISPP) MEISPP Interns at the Department of Energy Headquarters MEISPP Interns at the Department of Energy Headquarters Come Work for Us! Paid Summer Internships for Talented Students Diversity is our nation's greatest strength and a valued aspect of our work at the Department of Energy. College students from across the United States have

  11. EFRC Graduate Student Postdoctoral Researcher Competition | Photosynthetic

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

    Antenna Research Center EFRC Graduate Student Postdoctoral Researcher Competition EFRC Graduate Student Postdoctoral Researcher Competition PARC Grad Student Kaitlyn Faries was one of three winners of the EFRC Graduate Student Postdoctoral Researcher Competition at the 2015 EFRC PI Meeting. The title of her talk was Expanding the range of light absorbers for bacterial photosynthesis: YFP-enhanced charge separation at the Rhodobacter sphaeroides reaction centre

  12. Graduate Student Information - MST - UW Plasma Physics

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

    Graduate Student Information UW Madison Madison Symmetric Torus Graduate Student Information MST HomeGraduate Student InformationLinksTourControl and Auxiliary SystemsPhysics TopicsDeviceResearch MissionMST People mst logo CPLA Home Directory Publications Links Internal University of Wisconsin Physics Department Research funding includes support from: Department of Energy National Science Foundation Opportunities: At any given time there are about a dozen graduate students doing experimental

  13. Test Anxiety: Considerations for Educators/Students

    Energy Savers [EERE]

    Test Anxiety - Considerations f or Educators/Students Test anxiety... is that a real thing? Yes, it's real. Test anxiety has real symptoms and real effects on student performance. 25% to 50% of students experience test anxiety. Test anxiety looks like this: * Heightened physical and emotional state * Negative w orry t houghts * Reduced performance through impaired memory and focus Test anxiety... but I'm an e ducator not a psychologist. Can I really help? Yes, you can help your students. Test

  14. Hispanic Student Programs | National Nuclear Security Administration

    National Nuclear Security Administration (NNSA)

    Federal Employment / Our Jobs / Opportunities for Students / Hispanic Student Programs Hispanic Student Programs NNSA strives to recruit and hire a highly skilled workforce representing America's rich diversity. Are you a Hispanic high school student interested in building your leadership and technical skills? If you are just beginning the journey from college to career and are interested in learning more about jobs in science, technology, engineering and mathematics (STEM), the Hispanic Youth

  15. Student Temporary Employment Program | National Nuclear Security

    National Nuclear Security Administration (NNSA)

    Administration Student Jobs / Student Temporary Employment Program Student Temporary Employment Program Our Student Temporary Employment Program (STEP) positions are located nationwide. Most of our STEP positions are for summer employment. For STEP eligibility you must be: * a United States citizen; * at least 16 years old; * pursuing a high school diploma or General Equivalency Diploma (GED), vocational/technical certificate, or a college degree; * taking a half-time academic course load; *

  16. University of Delaware | CCEI Students & Postdoctoral Researchers

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

    Students and Postdoctoral Researchers Click column headings to sort Name Institution Title Advisor Name Institution Title Advisor BACK TO TOP

  17. Secretary Chu Chats with Student Energy Leaders

    Office of Energy Efficiency and Renewable Energy (EERE)

    Secretary Chu participated in a video conference call with 48 high school students participating in a Student Global Leadership Institute at Punahou School in Honolulu, Hawaii. The students -- who come from 15 different high schools in China, Japan, Singapore, Jordan and the U.S. -- are implementing their own energy projects.

  18. Computer Science and Information Technology Student Pipeline

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

    Science and Information Technology Student Pipeline Program Description Los Alamos National Laboratory's High Performance Computing and Information Technology Divisions recruit and hire promising undergraduate and graduate students in the areas of Computer Science, Information Technology, Management Information Systems, Computer Security, Software Engineering, Computer Engineering, and Electrical Engineering. Students are provided a mentor and challenging projects to demonstrate their

  19. Allocation of resources in the Soviet Union and China - 1985. Hearing before the Subcommittee on Economic Resources, Competitiveness, and Security Economics of the Joint Economic Committee, Congress of the United States, Ninety-Ninth Congress, Second Session, March 19, 1986

    SciTech Connect (OSTI)

    Not Available

    1986-01-01

    Part II of the hearing record covers a March 19 Executive session, with statements by Douglas MacEachin of the Central Intelligence Agency (CIA), submissions for the record by MacEachin and Admiral Robert Schmitt, and supporting documentation. The purpose of the hearings was to examine economic indicators of the Soviet Union and China in the context of military and national security interests. The study and report represent a cooperative effort on the part of the CIA and the Defense Intelligence Agency. The report focuses on Gorbachev's modernization program, its potential for success, and the military implications if it should fail. The witnesses felt that unlike the Soviets, the Chinese probably understate military expenditures; and the military triangle involving the US, Soviet Union, and China has benefited both the US and China. Submissions for the record make up most of the document.

  20. Education partnerships help students succeed

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

    Education partnerships Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue:Mar. 2016 all issues All Issues » submit Education partnerships help students succeed Programs and events are a community effort July 1, 2015 Laboratory Director Charles McMillan (left) shakes hands with Rio Arriba County Commission Chair Barney Trujillo during a Rio Arriba County Commission meeting in Española. Laboratory Director Charles McMillan (left) shakes