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Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Peter Dent, Electron Energy Corporation, Strategies for More...  

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

Peter Dent, Electron Energy Corporation, Strategies for More Effective Critical Materials Use Peter Dent, Electron Energy Corporation, Strategies for More Effective Critical...

2

Dent, Ohio: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Dent, Ohio: Energy Resources Dent, Ohio: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 39.185891°, -84.6513353° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.185891,"lon":-84.6513353,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

3

Dent County, Missouri: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Dent County, Missouri: Energy Resources Dent County, Missouri: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 37.544666°, -91.443469° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.544666,"lon":-91.443469,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

4

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly...  

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

Fossil Energy DOE Award No.: DE-NT0005668 Quarterly Report October 2009 to April 2011 Gas Hydrate Characterization in the GoM using Marine EM Methods Submitted by: Scripps...

5

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly Report  

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

1 to September 2011 1 to September 2011 Gas Hydrate Characterization in the GoM using Marine EM Methods Submitted by: Scripps Institution of Oceanography University of California San Diego La Jolla, CA 92093-0225 Principal Investigator: Steven Constable Prepared for: United States Department of Energy National Energy Technology Laboratory October 27, 2011 Oil & Natural Gas Technology TABLE OF CONTENTS Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Progress, Results, and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Milestone Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly Report  

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

1 to June 2011 1 to June 2011 Gas Hydrate Characterization in the GoM using Marine EM Methods Submitted by: Scripps Institution of Oceanography University of California San Diego La Jolla, CA 92093-0225 Principal Investigator: Steven Constable Prepared for: United States Department of Energy National Energy Technology Laboratory August 4 2011 Oil & Natural Gas Technology TABLE OF CONTENTS Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Progress, Results, and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Milestone Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly Report  

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

09 to March 2009 09 to March 2009 Gas Hydrate Characterization in the GoM using Marine EM Methods Submitted by: Scripps Institution of Oceanography University of California San Diego La Jolla, CA 92093-0225 Principal Investigator: Steven Constable Prepared for: United States Department of Energy National Energy Technology Laboratory April 30, 2009 Oil & Natural Gas Technology TABLE OF CONTENTS Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Progress, Results, and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Cost Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly Report  

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

10 to June 2010 10 to June 2010 Gas Hydrate Characterization in the GoM using Marine EM Methods Submitted by: Scripps Institution of Oceanography University of California San Diego La Jolla, CA 92093-0225 Principal Investigator: Steven Constable Prepared for: United States Department of Energy National Energy Technology Laboratory August 2, 2010 Oil & Natural Gas Technology TABLE OF CONTENTS Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Progress, Results, and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Cost Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly Report  

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

0 to March 2010 0 to March 2010 Gas Hydrate Characterization in the GoM using Marine EM Methods Submitted by: Scripps Institution of Oceanography University of California San Diego La Jolla, CA 92093-0225 Principal Investigator: Steven Constable Prepared for: United States Department of Energy National Energy Technology Laboratory April 12, 2010 Oil & Natural Gas Technology TABLE OF CONTENTS Executive Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Progress, Results, and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Cost Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10

Modeling fatique behavior of dents in petroleum pipelines.  

E-Print Network (OSTI)

??Dents in pipelines can seriously reduce the design life of a pipeline. Dents cause stress concentrations to develop which make dents susceptible to fatigue failures. (more)

Hoffmann, Roger Lynn

2012-01-01T23:59:59.000Z

11

Student Affairs Decker StuDent  

E-Print Network (OSTI)

Student Affairs Decker StuDent HeAltH ServiceS center HeAltH.bingHAmton.eDu The Decker Student Health Services Center is accredited by the Accreditation Association for Ambulatory Health Care (AAAHC and PPD). Fees will be charged for other vaccines, injections and laboratory testing. HeAltH eDucAtion Our

Suzuki, Masatsugu

12

Genesis Electronics | Open Energy Information  

Open Energy Info (EERE)

Solar Product Technology company, focusing on consumer applications for solar energy and alternative energy sources. References Genesis Electronics1 LinkedIn Connections...

13

Dented Diamonds, Carbon Cages and Exceptional Potential | U.S. DOE Office  

Office of Science (SC) Website

News » Featured Articles » 2012 » Dented News » Featured Articles » 2012 » Dented Diamonds, Carbon Cages and Exceptional Potential News Featured Articles 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 Science Headlines Presentations & Testimony News Archives Contact Information Office of Science U.S. Department of Energy 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 08.27.12 Dented Diamonds, Carbon Cages and Exceptional Potential Office of Science supported researchers develop new material with amazing hardness and exciting possibilities. Print Text Size: A A A Subscribe FeedbackShare Page Click to enlarge photo. Enlarge Photo Simulated structures showing the starting material of carbon-60 Image courtesy of Carnegie Institute of Washington Simulated structures showing the starting material of carbon-60

14

Energy Storage & Power Electronics 2008 Peer Review - Power Electronic...  

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

& Power Electronics 2008 Peer Review - Power Electronics (PE) Systems Presentations Energy Storage & Power Electronics 2008 Peer Review - Power Electronics (PE) Systems...

15

Electronics Stewardship | Department of Energy  

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

Electronics Electronics Stewardship Electronics Stewardship Mission The team promotes sustainable management of LM's electronic equipment by integrating the relevant requirements of Executive Order (EO) 13423, Strengthening Federal Environmental, Energy, and Transportation Management, and (EO) 13514, Federal Leadership in Environmental, Energy, and Economic Performance, and DOE Order 436.1, Departmental Sustainability, with LM activities, as approved by LM. The team advocates environmentally sound electronic stewardship practices. Scope The team uses a life-cycle approach to reduce the negative environmental impacts posed by electronic equipment. Established processes evaluate beneficial acquisition, use, and disposition of electronic equipment. Key Expectations Propose electronic stewardship goals/targets.

16

under Award Number DE-NT0006558."  

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

Acknowledgment: "This material is based upon work supported by the Department of Energy Acknowledgment: "This material is based upon work supported by the Department of Energy under Award Number DE-NT0006558." Disclaimer: "This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement,

17

Vibrational and Electronic Energy Level Searches  

Science Conference Proceedings (OSTI)

... options based on vibrational and electronic energies are available: ... the tabulated vibrational and electronic energy level data ... All rights reserved. ...

2013-07-15T23:59:59.000Z

18

Kk electronic A S | Open Energy Information  

Open Energy Info (EERE)

Kk electronic A S Jump to: navigation, search Name kk-electronic AS Place Herning, Denmark Zip DK-7400 Sector Wind energy Product Provides electronic wind turbine controllers....

19

LOW ENERGY BEAM PROCESSES IN ELECTRONIC MATERIALS ...  

Science Conference Proceedings (OSTI)

LOW ENERGY BEAM PROCESSES IN ELECTRONIC MATERIALS: Session II: Shallow Junction and Low Energy Implantation. Sponsored by: EMPMD Thin...

20

You are now leaving Energy.gov | Department of Energy  

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

arstechnica.comgamingnews201204how-a-console-firmware-update-could-make-a-small-dent-in-our-energy-problem.ars...

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Microsoft Word - DE-NT0005667 Quarterly Report 1-09 to 3-09_1.doc  

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

DOE Award No.: DE-NT0005667 Quarterly Progress Report January 2009 - March 2009 ASSESSING THE EFFICACY OF THE AEROBIC METHANOTROPHIC BIOFITER IN METHANE HYDRATE ENVIRONMENTS Submitted by: University of California Santa Barbara CA 93106 Principal Investigator: David L. Valentine Prepared for: United States Department of Energy National Energy Technology Laboratory April 20, 2009 Office of Fossil Energy 1 TABLE OF CONTENTS Executive Summary.......................................................................................... 2 Progress, Results and Discussion........................................................................... 3 Conclusion..................................................................................................... 4

22

Energy Storage & Power Electronics 2008 Peer Review - Power Electronics  

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

& Power Electronics 2008 Peer Review - Power & Power Electronics 2008 Peer Review - Power Electronics (PE) Systems Presentations Energy Storage & Power Electronics 2008 Peer Review - Power Electronics (PE) Systems Presentations The 2008 Peer Review Meeting for the DOE Energy Storage and Power Electronics Program (ESPE) was held in Washington DC on Sept. 29-30, 2008. Current and completed program projects were presented and reviewed by a group of industry professionals. The 2008 agenda was composed of 28 projects that covered a broad range of new and ongoing, state-of-the-art, energy storage and power electronics technologies, including updates on the collaborations among DOE/ESPE, CEC in California, and NYSERDA in New York. Power Electronics (PE) Systems presentations are available below. ESPE 2008 Peer Review - High Power Density Silicon Carbide Power Electronic

23

Energy Storage & Power Electronics 2008 Peer Review - Energy...  

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

Energy Storage Systems (ESS) Presentations Energy Storage & Power Electronics 2008 Peer Review - Energy Storage Systems (ESS) Presentations The 2008 Peer Review Meeting for the...

24

Electron Linacs for High Energy Physics  

Science Conference Proceedings (OSTI)

The purpose of this article is to introduce some of the basic physical principles underlying the operation of electron linear accelerators (electron linacs). Electron linacs have applications ranging from linacs with an energy of a few MeV, such that the electrons are approximately relativistic, to future electron-positron linear colliders having a collision energy in the several-TeV energy range. For the most part, only the main accelerating linac is treated in this article.

Wilson, Perry B.; /SLAC

2011-11-08T23:59:59.000Z

25

Electronic Materials Science Challenges in Renewable Energy  

Science Conference Proceedings (OSTI)

This work was supported in part by the U.S. Dept. of Energy through the NREL High- ... ...but electronic materials impact many more aspects of renewable energy...

26

Nanotechnology for Energy, Environment, Electronics & Industry  

Science Conference Proceedings (OSTI)

Symposium, Nanotechnology for Energy, Environment, Electronics & Industry ... Electrochemical Optimization of TiO2 Nanotubular Structure Formation and...

27

DE-NT0005667 Final Report  

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

Final Report Final Report October 2008 - September 2012 ASSESSING THE EFFICACY OF THE AEROBIC METHANOTROPHIC BIOFIL- TER IN METHANE HYDRATE ENVIRONMENTS Submitted by: University of California Santa Barbara CA 93106 Principal Investigator: David L. Valentine Prepared for: United States Department of Energy National Energy Technology Laboratory September 14, 2012 Office of Fossil Energy 1 TABLE OF CONTENTS Executive Summary 3 Publications Arising 4 Chapter 1: Methanotrophy in Microbial Mats 6 Chapter 2: Pelagic Methanotrophy: Studies from the Pacific Ocean 32 Chapter 3: Pelagic Methanotrophy: Studies from the Gulf of Mexico 72 Concluding Remarks 91 Acknowledgment 93 Disclaimer 93 LIST OF FIGURES

28

Energy Efficient Electronics Cooling Project  

SciTech Connect

Parker Precision Cooling Business Unit was awarded a Department of Energy grant (DE-EE0000412) to support the DOE-ITP goal of reducing industrial energy intensity and GHG emissions. The project proposed by Precision Cooling was to accelerate the development of a cooling technology for high heat generating electronics components. These components are specifically related to power electronics found in power drives focused on the inverter, converter and transformer modules. The proposed cooling system was expected to simultaneously remove heat from all three of the major modules listed above, while remaining dielectric under all operating conditions. Development of the cooling system to meet specific customer's requirements and constraints not only required a robust system design, but also new components to support long system functionality. Components requiring further development and testing during this project included pumps, fluid couplings, cold plates and condensers. All four of these major categories of components are required in every Precision Cooling system. Not only was design a key area of focus, but the process for manufacturing these components had to be determined and proven through the system development.

Steve O'Shaughnessey; Tim Louvar; Mike Trumbower; Jessica Hunnicutt; Neil Myers

2012-02-17T23:59:59.000Z

29

Appliances & Electronics | Department of Energy  

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

Appliances & Electronics Appliances & Electronics Appliances & Electronics Looking for ways to save energy? Check out these tips -- which include using a power strip and switching to ENERGY STAR appliances -- that every homeowner should try. Looking for ways to save energy? Check out these tips -- which include using a power strip and switching to ENERGY STAR appliances -- that every homeowner should try. Over the past couple of decades, advances in appliances and electronics -- from microwaves and dishwashers to smartphones and computers -- have changed the way we use energy in our homes. Through the Energy Department's appliance standards, manufacturers are making great strides in developing new, more efficient appliances that are

30

Advance Electronics | Open Energy Information  

Open Energy Info (EERE)

Advance Electronics Jump to: navigation, search Name Advance Electronics Place United Kingdom Zip LL14 3YR Product Develop and deliver power conditioners, transient suppressors,...

31

Laparoscopic tumor therapy using high energy electron ...  

The e-beam is transported through a laparoscopic tube proximate a target tumor for electron irradiation ... Biomass and Biofuels; Building Energy Efficiency;

32

LOW ENERGY PROCESSES IN ELECTRONIC MATERIALS: IV ...  

Science Conference Proceedings (OSTI)

LOW ENERGY PROCESSES IN ELECTRONIC MATERIALS: Session IV: Plasma ... Goorsky, H.P. Gillis, A.M. Andrews, University of California, Los Angeles, CA.

33

Ionization Energies, Electron Affinities and Electronegativies ... - TMS  

Science Conference Proceedings (OSTI)

Jun 28, 2007 ... Periodic table of the elements containing ionization energies, electron affinities, and electronegativities. CITATION: : R.E. Dickerson, H.B. Gray...

34

Electronic Materials Science Challenges in Renewable Energy  

Science Conference Proceedings (OSTI)

Presentation Title, Electronic Materials Science Challenges in Renewable Energy. Author(s), Richard R. King. On-Site Speaker (Planned), Richard R. King.

35

Oil & Natural Gas Technology DOE Award No.: DE-NT0005227 Final Report  

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

Oil & Natural Gas Technology Oil & Natural Gas Technology DOE Award No.: DE-NT0005227 Final Report Membrane Technology for Produced Water in Lea County Submitted by: Lea County Government 100 N. Main Lovington, NM 88260 And New Mexico Institute of Mining and Technology 801 Leroy Place Socorro, NM 87801 Report Authors: Cecilia E. Nelson, Principal Investigator Lea County Government and Ashok Kumar Ghosh, Ph.D., P.E. Principal Researcher, New Mexico Institute of Mining and Technology Prepared for: United States Department of Energy National Energy Technology Laboratory Office of Fossil Energy Report Date: September 20, 2011 Reporting Period: October 1, 2008 - June 30, 2011 2 DISCLAIMER This report was prepared as an account of work sponsored by an agency of the United

36

Energy Scavenging for Mobile and Wireless Electronics  

Science Conference Proceedings (OSTI)

Different techniques exist for harvesting power to augment or replace batteries in mobile and low-power electronics. From historical inventions to current research, energy harvesting has grown from long-established concepts into devices aimed at powering ... Keywords: power harvesting, energy scavenging, parasitic power, human-powered systems, low-power electronics, ubiquitous computing sensors

Joseph A. Paradiso; Thad Starner

2005-01-01T23:59:59.000Z

37

Steam Generator Management Program: PWR Steam Generator Top-of-Tubesheet Denting  

Science Conference Proceedings (OSTI)

Denting of steam generator tubing is the reduction in tube diameter due to the forces exerted by corrosion products on the outer diameter surfaces. This deformation can increase the risk of stress corrosion cracking due to the high stresses, strains, and cold work developed in the tube. Historically, denting at carbon steel tube support plate locations was a significant factor necessitating the early replacement of several steam generators. Currently, denting and stress corrosion cracking are being exper...

2012-06-06T23:59:59.000Z

38

Page not found | Department of Energy  

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

91 - 8000 of 31,917 results. 91 - 8000 of 31,917 results. Rebate Renewables Portfolio Standard '''''Note: The New Mexico Public Regulation Commission (PRC) [http://www.nmprc.state.nm.us/administrative-services/docs/press-releases... passed an order] in December 2012, making some significant... http://energy.gov/savings/renewables-portfolio-standard-8 Download VBH-0007- In the Matter of Salvatore Gionfriddo On December 28, 1998, Salvatore Gionfriddo (Complainant) filed a Complaint of Reprisal with the Director of the Federal Energy Technology Center of the Department of Energy (DOE) pursuant to 10 C.F... http://energy.gov/oha/downloads/vbh-0007-matter-salvatore-gionfriddo Download Peter Dent, Electron Energy Corporation, Strategies for More Effective Critical Materials Use http://energy.gov/pi/office-policy-and-international-affairs/downloads/peter-dent-electron-energy-corporation

39

Sharp Electronics Corporation USA | Open Energy Information  

Open Energy Info (EERE)

USA USA Jump to: navigation, search Name Sharp Electronics Corporation (USA) Place Huntington Beach, California Zip 92647 Product North American division of Japanese electronics company References Sharp Electronics Corporation (USA)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Sharp Electronics Corporation (USA) is a company located in Huntington Beach, California . References ↑ "Sharp Electronics Corporation (USA)" Retrieved from "http://en.openei.org/w/index.php?title=Sharp_Electronics_Corporation_USA&oldid=350899" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages Printable version

40

Cookson Electronics | Open Energy Information  

Open Energy Info (EERE)

Place Providence, Rhode Island Zip 2903 Product Rhode Island-based materials science company. The division produces PV junction boxes. References Cookson Electronics1...

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Energy Storage & Power Electronics 2008 Peer Review - Energy Storage  

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

& Power Electronics 2008 Peer Review - Energy & Power Electronics 2008 Peer Review - Energy Storage Systems (ESS) Presentations Energy Storage & Power Electronics 2008 Peer Review - Energy Storage Systems (ESS) Presentations The 2008 Peer Review Meeting for the DOE Energy Storage and Power Electronics Program (ESPE) was held in Washington DC on Sept. 29-30, 2008. Current and completed program projects were presented and reviewed by a group of industry professionals. The 2008 agenda was composed of 28 projects that covered a broad range of new and ongoing, state-of-the-art, energy storage and power electronics technologies, including updates on the collaborations among DOE/ESPE, CEC in California, and NYSERDA in New York. Energy Storage Systems (ESS) presentations are available below. ESPE 2008 Peer Review - EAC Energy Storage Subcommittee - Brad Roberts, S&C

42

Evaluation of Miscellaneous and Electronic Device Energy Use...  

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

loads, energy utilisation intensity, healthcare facilities, hospital energy use, energy consumption. Abstract Miscellaneous and electronic loads (MELs) consume about...

43

The Free Energy of Electron Gas  

Science Conference Proceedings (OSTI)

The energy and free energy of a semi?degenerate gas obeying the Fermi statistics are computed as functions of temperature and concentration. The significance of the deviation of the free energy from the limiting high temperature value is illustrated by calculating the degree of thermal ionization of potassium vapor under conditions of high electron concentration.

A. R. Gordon

1936-01-01T23:59:59.000Z

44

Estimating Appliance and Home Electronic Energy Use | Department of Energy  

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

Estimating Appliance and Home Electronic Energy Use Estimating Appliance and Home Electronic Energy Use Estimating Appliance and Home Electronic Energy Use November 11, 2013 - 4:23pm Addthis Estimate the energy consumption and cost to operate an appliance when making a purchase. Investing in an energy-efficient product may save you money in the long run. | Photo courtesy of iStockphoto.com/wh1600. Estimate the energy consumption and cost to operate an appliance when making a purchase. Investing in an energy-efficient product may save you money in the long run. | Photo courtesy of iStockphoto.com/wh1600. If you're trying to decide whether to invest in a more energy-efficient appliance or you'd like to determine your electricity loads, you may want to estimate appliance energy consumption. Formula for Estimating Energy Consumption

45

Estimating Appliance and Home Electronic Energy Use | Department of Energy  

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

Estimating Appliance and Home Electronic Energy Use Estimating Appliance and Home Electronic Energy Use Estimating Appliance and Home Electronic Energy Use November 11, 2013 - 4:23pm Addthis Estimate the energy consumption and cost to operate an appliance when making a purchase. Investing in an energy-efficient product may save you money in the long run. | Photo courtesy of iStockphoto.com/wh1600. Estimate the energy consumption and cost to operate an appliance when making a purchase. Investing in an energy-efficient product may save you money in the long run. | Photo courtesy of iStockphoto.com/wh1600. If you're trying to decide whether to invest in a more energy-efficient appliance or you'd like to determine your electricity loads, you may want to estimate appliance energy consumption. Formula for Estimating Energy Consumption

46

Estimating Appliance and Home Electronic Energy Use | Department of Energy  

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

Appliance and Home Electronic Energy Use Appliance and Home Electronic Energy Use Estimating Appliance and Home Electronic Energy Use November 11, 2013 - 4:23pm Addthis Estimate the energy consumption and cost to operate an appliance when making a purchase. Investing in an energy-efficient product may save you money in the long run. | Photo courtesy of iStockphoto.com/wh1600. Estimate the energy consumption and cost to operate an appliance when making a purchase. Investing in an energy-efficient product may save you money in the long run. | Photo courtesy of iStockphoto.com/wh1600. If you're trying to decide whether to invest in a more energy-efficient appliance or you'd like to determine your electricity loads, you may want to estimate appliance energy consumption. Formula for Estimating Energy Consumption

47

Manasa Electronics | Open Energy Information  

Open Energy Info (EERE)

Manasa Electronics Manasa Electronics Jump to: navigation, search Name Manasa Electronics Place Ghaziabad, Uttar Pradesh, India Zip 201 005 Sector Solar Product Ghaziabad-based manufacturer of solar PV products. Coordinates 28.673°, 77.41619° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":28.673,"lon":77.41619,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

48

Intermediate energy nuclear physics with electrons  

SciTech Connect

Inclusive electron scattering has made an enormous contribution to our understanding of hadron and of nuclear structure and to defining the questions which are driving the field in new directions. With intense CW intermediate energy electron beams and with the opportunity to exploit spin observables, central contributions to many of the most crucial questions are anticipated. (AIP)

Moniz, E.J.

1987-10-10T23:59:59.000Z

49

Energy Storage Systems 2007 Peer Review - Power Electronics Presentati...  

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

Power Electronics Presentations Energy Storage Systems 2007 Peer Review - Power Electronics Presentations The U.S. DOE Energy Storage Systems Program (ESS) held an annual peer...

50

Low-energy electron and low-energy positron holography  

Science Conference Proceedings (OSTI)

We demonstrate holographic reconstruction using low-energy electron-diffraction (LEED) and low-energy positron-diffraction (LEPD) intensity spectra. Calculated LEED and LEPD intensity spectra from a multiple-scattering method are inverted to produce high-fidelity images of near-neighbor atoms whose positions are measured from an adatom. We show that low-energy positron diffraction is better suited for holographic reconstruction because positron scattering in solids is weaker than that of electrons.

Tong, S.Y.; Huang, H.; Guo, X.Q. (Laboratory for Surface Studies and Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, Wisconsin 53201 (United States))

1992-12-21T23:59:59.000Z

51

Electron energy loss spectroscopy of disilane  

SciTech Connect

Electron energy loss spectra of disilane have been recorded over an excitation energy range of 20 eV employing electrons of 20 and 200 eV incident energy for scattering angles of 0/sup 0/--90/sup 0/. Every transition detected except one appears at an energy consistent with the first observed members of Rydberg series converging to one of four possible ion states. The first two observed transitions belong to (2a/sub 1//sub g/)/sup 2/..-->../sup 1//sup ,//sup 3/(2a/sub 1//sub g/,4s) dipole forbidden channels appearing at excitation energies of )similarreverse arrowto)6.3 and 7.05 eV for the triplet and singlet, respectively. Evidence is presented for the identification of additional forbidden transitions as well as possible low-lying valence transition

Dillon, M.A.; Spence, D.; Boesten, L.; Tanaka, H.

1988-04-01T23:59:59.000Z

52

New Superhard Form of Carbon Dents Diamond | U.S. DOE Office...  

Office of Science (SC) Website

20585 P: (301) 903-7486 F: (301) 903-4846 E: sc.ascr@science.doe.gov More Information August 2012 New Superhard Form of Carbon Dents Diamond Squeezing creates new class of...

53

Casimir vacuum energy and the semiclassical electron  

E-Print Network (OSTI)

In 1953 Casimir proposed a semiclassical model for the electron based on the concept that net inward radiation pressure from the electromagnetic vacuum fluctuations fields (as in the Casimir effect, generally) might play the role of Poincare stresses, compensating outward coulomb pressure to yield a stable configuration at small dimensions. Given that in scattering experiments the electron appears point-like, critical to the success of the proposed model is demonstration that the self-energy corresponding to the divergent coulomb field does not contribute to the electron mass. Here we develop a self-consistent, vacuum-fluctuation-based model that satisfies this requirement and thereby resolves the issue of what would otherwise appear to be an incompatibility between a point-like electron and finite mass.

H. E. Puthoff

2006-10-06T23:59:59.000Z

54

ElectronVault | Open Energy Information  

Open Energy Info (EERE)

ElectronVault ElectronVault Jump to: navigation, search Name ElectronVault Place Woodside, California Zip 94062 Product ElectronVault is developing battery-agnostic energy storage systems for transport applications. Coordinates 40.747061°, -73.902726° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":40.747061,"lon":-73.902726,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

55

A Study of Conversion Reactions Using Electron Energy Loss  

Science Conference Proceedings (OSTI)

In this study, conversion mechanism in NiO was studied using high resolution transmission electron microscopy and electron energy loss spectroscopy (EELS).

56

SkyPower Pekon Electronics JV | Open Energy Information  

Open Energy Info (EERE)

search Name SkyPower-Pekon Electronics JV Place India Sector Wind energy Product Joint venture for development of Indian wind farms. References SkyPower-Pekon Electronics...

57

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

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

Integrated Dynamic Electron Solutions, Inc. America's Next Top Energy Innovator Challenge 333 likes Integrated Dynamic Electron Solutions, Inc. Lawrence Livermore National...

58

Electron Solar Energy Formerly Envigra Inc | Open Energy Information  

Open Energy Info (EERE)

Electron Solar Energy Formerly Envigra Inc Electron Solar Energy Formerly Envigra Inc Jump to: navigation, search Name Electron Solar Energy (Formerly Envigra Inc) Place Miami, Florida Zip 33137 Sector Solar Product US-based distributor of electrical equipments such as batteries, solar panels, inverters and wires. Coordinates 25.728985°, -80.237419° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":25.728985,"lon":-80.237419,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

59

Energy Storage & Power Electronics 2008 Peer Review - Agenda...  

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

AgendaPresentation List Energy Storage & Power Electronics 2008 Peer Review - AgendaPresentation List The 2008 Peer Review Meeting for the DOE Energy Storage and Power...

60

Recovery of Water from Boiler Flue Gas Using Condensing Heat Exchangers ProMIS/Project No.: DE-NT0005648  

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

Edward Levy Edward Levy Principal Investigator Director, Lehigh University Energy Research Center RecoveRy of WateR fRom BoileR flue Gas usinG condensinG Heat excHanGeRs PRomis/PRoject no.: de-nt0005648 Background As the United States' population grows and demand for electricity and water increases, power plants located in some parts of the country will find it increasingly difficult to obtain the large quantities of water needed to maintain operations. Most of the water used in a thermoelectric power plant is used for cooling, and the U.S. Department of Energy (DOE) has been focusing on possible techniques to reduce the amount of fresh water needed for cooling. Many coal-fired power plants operate with stack temperatures in the 300 °F range to minimize fouling and corrosion problems due to sulfuric acid condensation and to

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Diamondoid monolayers as electron emitters - Energy Innovation ...  

Provided are electron emitters based upon diamondoid monolayers, preferably self-assembled higher diamondoid monolayers. High intensity electron ...

62

Solera Sustainable Energies Company formerly Phantom Electron Corp | Open  

Open Energy Info (EERE)

Solera Sustainable Energies Company formerly Phantom Electron Corp Solera Sustainable Energies Company formerly Phantom Electron Corp Jump to: navigation, search Name Solera Sustainable Energies Company (formerly Phantom Electron Corp) Place Toronto, Ontario, Canada Zip M1V 5N2 Sector Solar Product Toronto-based provider of utility-grid connected solar power. References Solera Sustainable Energies Company (formerly Phantom Electron Corp)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Solera Sustainable Energies Company (formerly Phantom Electron Corp) is a company located in Toronto, Ontario, Canada . References ↑ "Solera Sustainable Energies Company (formerly Phantom Electron Corp)" Retrieved from "http://en.openei.org/w/index.php?title=Solera_Sustainable_Energies_Company_formerly_Phantom_Electron_Corp&oldid=351467

63

Energy Storage Systems 2007 Peer Review - Power Electronics Presentations |  

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

Power Electronics Power Electronics Presentations Energy Storage Systems 2007 Peer Review - Power Electronics Presentations The U.S. DOE Energy Storage Systems Program (ESS) held an annual peer review on September 27, 2007 in San Francisco, CA. Eighteen presentations were divided into categories; those related to power electronics are below. Other presentation categories were: Economics - Benefit Studies and Environment Benefit Studies Utility & Commercial Applications of Advanced Energy Storage Systems International Energy Storage Programs Innovations in Energy Storage Systems ESS 2007 Peer Review - StatCom with Energy Storage to Smooth Intermittent Power Output of Wind Farms - Mesut Baran, NC State.pdf ESS 2007 Peer Review - Cyber-Physical Systems Distributed Control - Mariesa

64

Effect of location and orientation of two short dents on ultimate compressive strength of a thin square steel plate  

Science Conference Proceedings (OSTI)

Thin plates are subject to several imperfections (including dents) which reduce the ultimate strength of plates. In this work, nearness effect of two short dents of same size on the ultimate strength of a thin square steel plate is numerically investigated. ...

A. V. Raviprakash; B. Prabu; N. Alagumurthi

2012-10-01T23:59:59.000Z

65

Tips: Home Office and Electronics | Department of Energy  

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

Home Office and Electronics Home Office and Electronics Tips: Home Office and Electronics April 24, 2012 - 6:52pm Q&A How do you save energy when working at home? Ask Us Addthis Keep Your Home Office Efficient with ENERGY STAR. 1 of 2 Keep Your Home Office Efficient with ENERGY STAR. Laptops are far more efficient than desktop computers, especially ENERGY STAR qualified models. Use Smart Power Strips to Save Energy. 2 of 2 Use Smart Power Strips to Save Energy. Many electronics go into standby mode when you turn them off. Reduce wasted (vampire) power by plugging electronics into a smart power strip, which can turn your electronics off completely. Shop for ENERGY STAR® Office Products Computers Imaging equipment (copiers, printers, fax machines, scanners) Monitors and other displays Many people work from home at least one day per week. Working from home

66

Medium energy pitch angle distribution during substorm injected electron clouds  

E-Print Network (OSTI)

Medium energy pitch angle distribution during substorm injected electron clouds A. A° snes,1 J, N. ?stgaard, and M. Thomsen (2005), Medium energy pitch angle distribution during substorm injected to obtain pitch angle resolved electron distribution data for measurements at energies 10 eV to 47 keV. [3

Bergen, Universitetet i

67

DOE Reaches Agreement with LG Electronics, USA, On Refrigerator Energy  

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

Reaches Agreement with LG Electronics, USA, On Refrigerator Reaches Agreement with LG Electronics, USA, On Refrigerator Energy Matter DOE Reaches Agreement with LG Electronics, USA, On Refrigerator Energy Matter November 14, 2008 - 4:47pm Addthis ENERGY STAR® Program Continues to Help American Consumers Make Energy Efficient Choices WASHINGTON - The U.S. Department of Energy (DOE) today announced an agreement with LG Electronics, USA, Inc. (LG), resolving concerns related to energy usage measurements reported on LG French Door refrigerators with through-the-door ice and water service. The ENERGY STAR® program helps American consumers make energy efficient choices, saving billions of dollars while protecting the environment by using identified energy efficient products and practices. "DOE believes that the actions LG plans to take will benefit consumers and

68

NIST Vibrational and electronic energy levels of polyatomic ...  

Science Conference Proceedings (OSTI)

... The types of measurement surveyed include spectrometer and laser-based ... ground-state vibrational fundamentals, the electronic energy levels, and ...

2010-10-08T23:59:59.000Z

69

Experimental Observation of Energy Modulation in Electron Beams...  

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

OBSERVATION OF ENERGY MODULATION IN ELECTRON BEAMS PASSING THROUGH TERAHERTZ DIELECTRIC WAKEFIELD STRUCTURES* S. Antipov , C. Jing, P. Schoessow, and A. Kanareykin, Euclid...

70

T O T Section 7. Total Energy L E N E R G Y Total Energy Consumption  

U.S. Energy Information Administration (EIA)

Residential Sector Solar thermal direct use energy and photovoltaic electricity net generation ... dent population as published by the U.S. Department of Commerce, Bu-

71

In Focus: Dented Diamonds, Carbon Cages, and Exceptional Potential...  

Office of Science (SC) Website

by the Energy Frontier Research in Extreme Environments (EFree) center, an EFRC led by Ho-kwang Mao at the Carnegie Institution of Washington. Last modified: 3272013...

72

Electron energy recovery system for negative ion sources  

DOE Patents (OSTI)

An electron energy recovery system for negative ion sources is provided. The system, employing crossed electric and magnetic fields, separates the electrons from the ions as they are extracted from the ion source plasma generator and before the ions are accelerated to their full energy. With the electric and magnetic fields oriented 90/sup 0/ to each other, the electrons remain at approximately the electrical potential at which they were generated. The electromagnetic forces cause the ions to be accelerated to the full accelerating supply voltage energy while being deflected through an angle of less than 90/sup 0/. The electrons precess out of the accelerating field region into an electron recovery region where they are collected at a small fraction of the full accelerating supply energy. It is possible, by this method, to collect > 90% of the electrons extracted along with the negative ions from a negative ion source beam at < 4% of full energy.

Dagenhart, W.K.; Stirling, W.L.

1979-10-25T23:59:59.000Z

73

Home Office and Electronics | Department of Energy  

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

Home Office Efficient with ENERGY STAR. Laptops are far more efficient than desktop computers, especially ENERGY STAR qualified models. Use Smart Power Strips to Save Energy. 2...

74

Tunable Graphene Electronic Devices - Energy Innovation Portal  

Energy Innovation Portal ... Wind Energy; Partners (27) Visual ... non-toxic dopants are effective Applications and Industries * Superconducting single photon ...

75

Feasibility of Electron Cooling for Low-Energy RHIC operation April 18, 2008 FEASIBILITY OF ELECTRON COOLING FOR LOW-ENERGY RHIC  

E-Print Network (OSTI)

for RHIC low-energy cooling. 5.1 DC cooler Electron cooling with electron beam kinetic energies Ek,e=0 for the DC and RF electron beam approach. It suggests that the cost of such a cooler for Low-Energy RHIC;Feasibility of Electron Cooling for Low-Energy RHIC operation April 18, 2008 A.2 Parameters of DC electron

76

Validation of Geant4 simulation of electron energy deposition  

E-Print Network (OSTI)

Geant4-based simulations of the energy deposited by electrons in various materials are quantitatively compared to high precision calorimetric measurements taken at Sandia Laboratories. The experimental data concern electron beams of energy between a few tens of keV and 1 MeV at various incidence angles. Two experimental scenarios are evaluated: the longitudinal energy deposition pattern in a finely segmented detector, and the total energy deposited in a larger size calorimeter. The simulations are produced with Geant4 versions from 9.1 to 9.6; they involve models of electron-photon interactions in the standard and low energy electromagnetic packages, and various implementations of electron multiple scattering. Significant differences in compatibility with experimental data are observed in the longitudinal energy deposition patterns produced by the examined Geant4 versions, while the total deposited energy exhibits smaller variations across the various Geant4 versions, with the exception Geant4 9.4. The valida...

Batic, Matej; Pia, Maria Grazia; Saracco, Paolo; Weidenspointner, Georg

2013-01-01T23:59:59.000Z

77

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

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

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

78

Site-specific electronic configurations of Fe 3d states by energy loss by channeled electrons  

SciTech Connect

Site-specific configurations of Fe 3d electrons in a spinel ferrite were investigated by electron energy loss spectroscopy under electron channeling conditions. Site-specific spectra were extracted by applying a multivariate curve resolution (MCR) technique to the data set. An electronic difference in the Fe sites caused by ligand field splitting of trivalent Fe was probed. This demonstrated the promise of site-specific valence and spin state analysis in spintronics applications of spinel ferrites.

Tatsumi, Kazuyoshi; Muto, Shunsuke; Nishida, Ikuo [Department of Materials, Physics, and Energy Engineering, Nagoya University, Chikusa, Nagoya 464-8603 (Japan); Rusz, Jan [Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala (Sweden)

2010-05-17T23:59:59.000Z

79

Bharat Electronics Limited BEL | Open Energy Information  

Open Energy Info (EERE)

Limited BEL Limited BEL Jump to: navigation, search Name Bharat Electronics Limited (BEL) Place Bangalore, India Zip 560015 Sector Solar Product Major supplier of products and turnkey systems with expertise in solar products and systems, defence communication, radars & sensors, telecommunication, broadcasting equipments, e-governance networks and other components. References Bharat Electronics Limited (BEL)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Bharat Electronics Limited (BEL) is a company located in Bangalore, India . References ↑ "Bharat Electronics Limited (BEL)" Retrieved from "http://en.openei.org/w/index.php?title=Bharat_Electronics_Limited_BEL&oldid=342709

80

Shanghai Electric Xantrex Power Electronics Co Ltd | Open Energy  

Open Energy Info (EERE)

Electric Xantrex Power Electronics Co Ltd Electric Xantrex Power Electronics Co Ltd Jump to: navigation, search Name Shanghai Electric Xantrex Power Electronics Co Ltd Place Shanghai Municipality, China Zip 201315 Sector Renewable Energy, Solar, Wind energy Product JV company that will design, manufacture and sell solar and wind power inverters and control-monitoring system for the renewable energy market in China from a facility to be built in Shanghai, China. References Shanghai Electric Xantrex Power Electronics Co Ltd[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Shanghai Electric Xantrex Power Electronics Co Ltd is a company located in Shanghai Municipality, China . References ↑ "Shanghai Electric Xantrex Power Electronics Co Ltd"

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

An interference wiggler for precise diagnostics of electron beam energy  

SciTech Connect

Relativistic electrons passing through two identical magnetic sections generate synchrotron radiation whose spectrum is strongly modulated as the photon energy varies. The modulation is caused by the interference of radiation from each section, and has been observed in the spectrum of spontaneous radiation from transverse optical klystron which utilizes two undulators. In this paper, another device based on two simple wigglers is analyzed. The device, which will be called the interference wiggler, can be used for precise diagnostics of electron beam energy; by analyzing the modulated spectrum with a monochromator, the electron energy can be determined up to an accuracy of 10/sup -3/ or 10/sup -4/. General design criteria for interference wigglers are developed. Several example designs are given for measurement of the electron energy for the planned electron beam facility at CEBAF for the 1 to 2 GeV Light Source at Berkeley.

Kim, Kwang-Je

1987-03-01T23:59:59.000Z

82

Energy Sharing in the 2-Electron Attosecond Streak Camera  

E-Print Network (OSTI)

Using the recently developed concept of the 2-electron streak camera (see NJP 12, 103024 (2010)), we have studied the energy-sharing between the two ionizing electrons in single-photon double ionization of He(1s2s). We find that the most symmetric and asymmetric energy sharings correspond to different ionization dynamics with the ion's Coulomb potential significantly influencing the latter. This different dynamics for the two extreme energy sharings gives rise to different patterns in asymptotic observables and different time-delays between the emission of the two electrons. We show that the 2-electron streak camera resolves the time-delays between the emission of the two electrons for different energy sharings.

Price, H; Emmanouilidou, A

2011-01-01T23:59:59.000Z

83

El Ma Electronic Machining srl | Open Energy Information  

Open Energy Info (EERE)

Ma Electronic Machining srl Ma Electronic Machining srl Jump to: navigation, search Name El.Ma. Electronic Machining srl Place Riva del Garda (TN), Italy Zip 38066 Sector Hydro, Hydrogen, Solar, Wind energy Product String representation "Italy-based, in ... solar sectors." is too long. References El.Ma. Electronic Machining srl[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. El.Ma. Electronic Machining srl is a company located in Riva del Garda (TN), Italy . References ↑ "El.Ma. Electronic Machining srl" Retrieved from "http://en.openei.org/w/index.php?title=El_Ma_Electronic_Machining_srl&oldid=344591" Categories: Clean Energy Organizations Companies Organizations

84

Electron energy recovery system for negative ion sources  

DOE Patents (OSTI)

An electron energy recovery system for negative ion sources is provided. The system, employs crossed electric and magnetic fields to separate the electrons from ions as they are extracted from a negative ion source plasma generator and before the ions are accelerated to their full kinetic energy. With the electric and magnetic fields oriented 90.degree. to each other, the electrons are separated from the plasma and remain at approximately the electrical potential of the generator in which they were generated. The electrons migrate from the ion beam path in a precessing motion out of the ion accelerating field region into an electron recovery region provided by a specially designed electron collector electrode. The electron collector electrode is uniformly spaced from a surface of the ion generator which is transverse to the direction of migration of the electrons and the two surfaces are contoured in a matching relationship which departs from a planar configuration to provide an electric field component in the recovery region which is parallel to the magnetic field thereby forcing the electrons to be directed into and collected by the electron collector electrode. The collector electrode is maintained at a potential slightly positive with respect to the ion generator so that the electrons are collected at a small fraction of the full accelerating supply voltage energy.

Dagenhart, William K. (Oak Ridge, TN); Stirling, William L. (Oak Ridge, TN)

1982-01-01T23:59:59.000Z

85

Energy Spread Reduction of Electron Beams Produced via Laser Wake  

Science Conference Proceedings (OSTI)

Laser wakefield acceleration of electrons holds great promise for producing ultra-compact stages of GeV scale, high quality electron beams for applications such as x-ray free electron lasers and high energy colliders. Ultra-high intensity laser pulses can be self-guided by relativistic plasma waves over tens of vacuum diffraction lengths, to give >1 GeV energy in cm-scale low density plasma using ionization-induced injection to inject charge into the wake at low densities. This thesis describes a series of experiments which investigates the physics of LWFA in the self-guided blowout regime. Beginning with high density gas jet experiments the scaling of the LWFA-produced electron beam energy with plasma electron density is found to be in excellent agreement with both phenomenological theory and with 3-D PIC simulations. It is also determined that self-trapping of background electrons into the wake exhibits a threshold as a function of the electron density, and at the densities required to produce electron beams with energies exceeding 1 GeV a different mechanism is required to trap charge into low density wakes. By introducing small concentrations of high-Z gas to the nominal He background the ionization-induced injection mechanism is enabled. Electron trapping is observed at densities as low as 1.3 x 10{sup 18} cm{sup -3} in a gas cell target, and 1.45 GeV electrons are demonstrated for the first time from LWFA. This is currently the highest electron energy ever produced from LWFA. The ionization-induced trapping mechanism is also shown to generate quasi-continuous electron beam energies, which is undesirable for accelerator applications. By limiting the region over which ionization-induced trapping occurs, the energy spread of the electron beams can be controlled. The development of a novel two-stage gas cell target provides the capability to tailor the gas composition in the longitudinal direction, and confine the trapping process to occur only in a limited, defined region. Using this technique a 460 MeV electron beam was produced with an energy spread of 5%. This technique is directly scalable to multi-GeV electron beam generation with sub-percent energy spreads.

Pollock, B

2012-03-19T23:59:59.000Z

86

Ligitek Electronics Co | Open Energy Information  

Open Energy Info (EERE)

Ligitek Electronics Co Place Taipei Hsien, Taiwan Sector Solar Product Manufacturer of LED based products, planning to open a solar panel production unit and invest USD 12.0m in...

87

Extracting physically interpretable data from electron energy-loss spectra.  

SciTech Connect

Principal component analysis is routinely applied to analyze data sets in electron energy-loss spectroscopy (EELS). We show how physically meaningful spectra can be obtained from the principal components using a knowledge of the scattering of the probe electron and the geometry of the experiment. This approach is illustrated by application to EELS data for the carbon K edge in graphite obtained using a conventional transmission electron microscope. The effect of scattering of the probe electron is accounted for, yielding spectra which are equivalent to experiments using linearly polarized X-rays. The approach is general and can also be applied to EELS in the context of scanning transmission electron microscopy.

Witte, C.; Zaluzec, N. J.; Allen, L. J.; Materials Science Division; Univ. of Melbourn

2010-10-30T23:59:59.000Z

88

Lasers, Electron Beams and New Years Resolutions | Department of Energy  

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

Lasers, Electron Beams and New Years Resolutions Lasers, Electron Beams and New Years Resolutions Lasers, Electron Beams and New Years Resolutions March 2, 2011 - 3:43pm Addthis Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science What are the key facts? The electron beam that powers Jefferson Lab's Free-Electron Laser pumped out a record power input of 500 kilvolts using an innovative energy-recovery system that amplifies energy with far less power. A sufficiently powerful laser could make an effective defensive weapon, as well as accurate detection and tracking. The few folks still keeping their New Year's resolutions to work out might be the first to appreciate the recent record-breaking lift by the Energy Department's Jefferson Lab. Take a steel dumbbell. Hoist it up - lift with your legs! - onto a stand. Then add another ...and another

89

Consumer Electronics Show 2013 Highlights Sustainable Energy Technology |  

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

Consumer Electronics Show 2013 Highlights Sustainable Energy Consumer Electronics Show 2013 Highlights Sustainable Energy Technology Consumer Electronics Show 2013 Highlights Sustainable Energy Technology January 18, 2013 - 4:52pm Addthis Excited attendees flood into the Central Hall exhibits to see the latest and greatest in technology at the 2013 International CES. | 2013 International CES Excited attendees flood into the Central Hall exhibits to see the latest and greatest in technology at the 2013 International CES. | 2013 International CES Erik Hyrkas Erik Hyrkas Media Relations Specialist, Office of Energy Efficiency & Renewable Energy What does this mean for me? Watch for the new sustainable technologies displayed at CES this year. Energy savings aren't all about efficient heating and cooling these days.

90

Consumer Electronics Show 2013 Highlights Sustainable Energy Technology |  

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

Consumer Electronics Show 2013 Highlights Sustainable Energy Consumer Electronics Show 2013 Highlights Sustainable Energy Technology Consumer Electronics Show 2013 Highlights Sustainable Energy Technology January 18, 2013 - 4:52pm Addthis Excited attendees flood into the Central Hall exhibits to see the latest and greatest in technology at the 2013 International CES. | 2013 International CES Excited attendees flood into the Central Hall exhibits to see the latest and greatest in technology at the 2013 International CES. | 2013 International CES Erik Hyrkas Erik Hyrkas Media Relations Specialist, Office of Energy Efficiency & Renewable Energy What does this mean for me? Watch for the new sustainable technologies displayed at CES this year. Energy savings aren't all about efficient heating and cooling these days.

91

Central Electronics Limited CEL | Open Energy Information  

Open Energy Info (EERE)

Electronics Limited CEL Electronics Limited CEL Jump to: navigation, search Name Central Electronics Limited (CEL) Place Sahibabad, Uttar Pradesh, India Zip 201010 Sector Solar Product String representation "Sahibabad-based ... nment of India." is too long. Coordinates 28.67127°, 77.371002° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":28.67127,"lon":77.371002,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

92

EcoElectron Ventures | Open Energy Information  

Open Energy Info (EERE)

EcoElectron Ventures EcoElectron Ventures Jump to: navigation, search Name EcoElectron Ventures Address 1106 2nd Street Place Encinitas, California Zip 92024 Region Southern CA Area Product Seed stage capital investment fund Phone number (760) 635-1681 Website http://www.ecoelectron.com/ Coordinates 33.037816°, -117.293986° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.037816,"lon":-117.293986,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

93

Micro Power Electronics Inc | Open Energy Information  

Open Energy Info (EERE)

Power Electronics Inc Power Electronics Inc Jump to: navigation, search Name Micro Power Electronics Inc Place Hillsboro, Oregon Zip 97124-7165 Product Leading battery system integrator. Coordinates 43.651735°, -90.341144° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.651735,"lon":-90.341144,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

94

Green Electronics Council | Open Energy Information  

Open Energy Info (EERE)

Electronics Council Electronics Council Jump to: navigation, search Name Green Electronics Council Place Portland, Oregon Product Oregon-based program that supports the design, manufacture, use and recovery of electric products. Coordinates 45.511795°, -122.675629° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.511795,"lon":-122.675629,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

95

How Do You Save Energy With Your Electronics? | Department of...  

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

only thing that's easy to leave on more than you need. Do you have any tips for saving energy with your home electronics? You have the chance to share your thoughts on a question...

96

Miscellaneous and Electronic Loads Energy Efficiency Opportunities for  

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

Miscellaneous and Electronic Loads Energy Efficiency Opportunities for Miscellaneous and Electronic Loads Energy Efficiency Opportunities for Commercial Buildings: A Collaborative Study by the United States and India Title Miscellaneous and Electronic Loads Energy Efficiency Opportunities for Commercial Buildings: A Collaborative Study by the United States and India Publication Type Report Refereed Designation Unknown LBNL Report Number LBNL-6287E Year of Publication 2013 Authors Ghatikar, Girish, Iris H. Y. Cheung, and Steven Lanzisera Secondary Authors Wardell, Bob, Manoj Deshpande, Jayraj Ugarkar, and Infosys Technologies Limited Date Published 04/2013 Keywords Electronic loads, energy efficiency opportunities for commercial buildings Short Title MELs Refereed Designation Unknown Attachment Size PDF 1.44 MB Google Scholar BibTex

97

Characterization of Energy, Electronic and Optical Materials  

Science Conference Proceedings (OSTI)

Mar 14, 2012... Chongqing University; John Carpenter, US Department of Energy; Donato .... Riyad Ahmad-Bitar2; 1Al Isra University; 2University of Jordan

98

Home Office and Electronics | Department of Energy  

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

Briefing: Fiscal Year 2012 Budget Slides Secretary Chu's FY 2012 Budget Briefing Science Lecture: Talking the Higgs Boson with Dr. Joseph Incandela Energy 101: Lighting Choices...

99

Nanotechnology for Energy, Environment, Electronics & Industry I  

Science Conference Proceedings (OSTI)

Oct 30, 2013 ... Elegant Magnetic and Electric Field Sensing with Fiber Optic Technologies: ... Energy resources are limited to remote areas, or power failure for...

100

Nanotechnology for Energy, Environment, Electronics and Industry  

Science Conference Proceedings (OSTI)

The benefits can range from higher system properties and energy efficiency, to innovative healthcare solutions, to advanced industry products and solutions.

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

REN Electron srl formerly FIMI Group srl | Open Energy Information  

Open Energy Info (EERE)

Electron srl formerly FIMI Group srl Electron srl formerly FIMI Group srl Jump to: navigation, search Name REN Electron srl (formerly FIMI Group srl) Place Carugate (MI), Italy Zip 20061 Sector Solar Product Italian solar installers. References REN Electron srl (formerly FIMI Group srl)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. REN Electron srl (formerly FIMI Group srl) is a company located in Carugate (MI), Italy . References ↑ "[ REN Electron srl (formerly FIMI Group srl)]" Retrieved from "http://en.openei.org/w/index.php?title=REN_Electron_srl_formerly_FIMI_Group_srl&oldid=350281" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes

102

Dalian Sengu New Power Electronic Co Ltd | Open Energy Information  

Open Energy Info (EERE)

Dalian Sengu New Power Electronic Co Ltd Dalian Sengu New Power Electronic Co Ltd Jump to: navigation, search Name Dalian Sengu New Power Electronic Co Ltd Place Dalian, Liaoning Province, China Zip 116013 Sector Solar, Wind energy Product Active in the manufacturing of vertical axis wind turbines, solar components, solar-wind complementary power supply system, LED lighting system. References Dalian Sengu New Power Electronic Co Ltd[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Dalian Sengu New Power Electronic Co Ltd is a company located in Dalian, Liaoning Province, China . References ↑ "Dalian Sengu New Power Electronic Co Ltd" Retrieved from "http://en.openei.org/w/index.php?title=Dalian_Sengu_New_Power_Electronic_Co_Ltd&oldid=344052

103

Beijing Eastwest Electronics Technology Ltd | Open Energy Information  

Open Energy Info (EERE)

Eastwest Electronics Technology Ltd Eastwest Electronics Technology Ltd Jump to: navigation, search Name Beijing Eastwest Electronics Technology Ltd Place Beijing, Beijing Municipality, China Zip 100029 Sector Solar, Wind energy Product Dedicated to the design, installation, development and maintaince of solar PV and wind power generating systems. References Beijing Eastwest Electronics Technology Ltd[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Beijing Eastwest Electronics Technology Ltd is a company located in Beijing, Beijing Municipality, China . References ↑ "Beijing Eastwest Electronics Technology Ltd" Retrieved from "http://en.openei.org/w/index.php?title=Beijing_Eastwest_Electronics_Technology_Ltd&oldid=342599

104

Methods for Detailed Energy Data Collection of Miscellaneous and Electronic  

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

Methods for Detailed Energy Data Collection of Miscellaneous and Electronic Methods for Detailed Energy Data Collection of Miscellaneous and Electronic Loads in a Commercial Office Building Title Methods for Detailed Energy Data Collection of Miscellaneous and Electronic Loads in a Commercial Office Building Publication Type Report Refereed Designation Unknown LBNL Report Number LBNL-6384E Year of Publication 2013 Authors Lanzisera, Steven, Stephen Dawson-Haggerty, Iris H. Y. Cheung, Jay Taneja, David Culler, and Richard E. Brown Date Published 04/2013 Keywords Commercial Office Building, Data Collection, Electronic loads Abstract Miscellaneous and electronic loads (MELs) consume about 20% of the primary energy used in U.S. buildings, and this share is projected to increase for the foreseeable future. Our understanding, however, of which devices are most responsible for this energy use is still rudimentary due to the difficulty and expense of performing detailed studies on MELs and their energy use. In order to better understand the energy use of MELs and the design of MELs field metering studies, we conducted a year-long study of MELs in an 89,500 sq. ft. (8310 m2) office building.

105

Home Office and Electronics | Department of Energy  

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

Budget Slides Secretary Chu's FY 2012 Budget Briefing Science Lecture: Talking the Higgs Boson with Dr. Joseph Incandela What We Do For You Month by month the clean energy...

106

An electron energy loss spectrometer designed for studies of electronic energy losses and spin waves in the large momentum regime  

Science Conference Proceedings (OSTI)

Based on 143 deg. electrostatic deflectors we have realized a new spectrometer for electron energy loss spectroscopy which is particularly suitable for studies on surface spin waves and other low energy electronic energy losses. Contrary to previous designs high resolution is maintained even for diffuse inelastic scattering due to a specific management of the angular aberrations in combination with an angle aperture. The performance of the instrument is demonstrated with high resolution energy loss spectra of surface spin waves on a cobalt film deposited on the Cu(100) surface.

Ibach, H. [Peter Gruenberg Institut PGI-3, Forschungszentrum Juelich, 52425 Juelich (Germany); Juelich Aachen Research Alliance - Fundamentals of Future Information Technologies (JARA-FIT), 52425 Juelich (Germany); Rajeswari, J.; Schneider, C. M. [Peter Gruenberg Institut PGI-6, Forschungszentrum Juelich, 52425 Juelich (Germany); Juelich Aachen Research Alliance - Fundamentals of Future Information Technologies (JARA-FIT), 52425 Juelich (Germany)

2011-12-15T23:59:59.000Z

107

Light-energized electronics energy management system  

SciTech Connect

An apparatus is described comprising: operational means for at times performing a function other than communication that consumes power at a first rate, and for at other times performing a communication function that consumes power at a second rate higher than the first rate; means for deriving electrical energy from radiant energy incident upon the apparatus; means for storing electrical energy, received from the means for deriving, sufficient so as to power the operational means at the first rate for the function other than communication; connection means for electrically connecting the operational means to an external source of power selectively during all such times as the operational means is performing the communication function; wiring means for constantly electrically connecting the operational means to the means for storing electrical energy; transportable power source means, electrically connected to the operational means by the connection means during all such times as the operational means is performing the communication function, for serving as the external source of power for powering the operational means at the relatively-higher second rate; wherein the powering of the operational means for the communication function by the transportable power source means permits that this communication function, which uses power at the relative-higher second rate, may transpire without substantial diminution of the energy stored in the means for storing energy.

Nielsen, W.Y.; Luck, J.M.

1993-07-20T23:59:59.000Z

108

Electron beam directed energy device and methods of using same  

DOE Patents (OSTI)

A method and apparatus is disclosed for an electron beam directed energy device. The device consists of an electron gun with one or more electron beams. The device includes one or more accelerating plates with holes aligned for beam passage. The plates may be flat or preferably shaped to direct each electron beam to exit the electron gun at a predetermined orientation. In one preferred application, the device is located in outer space with individual beams that are directed to focus at a distant target to be used to impact and destroy missiles. The aimings of the separate beams are designed to overcome Coulomb repulsion. A method is also presented for directing the beams to a target considering the variable terrestrial magnetic field. In another preferred application, the electron beam is directed into the ground to produce a subsurface x-ray source to locate and/or destroy buried or otherwise hidden objects including explosive devices.

Retsky, Michael W. (Trumbull, CT)

2007-10-16T23:59:59.000Z

109

Nanotechnology for Energy, Environment, Electronics & Industry II  

Science Conference Proceedings (OSTI)

Nanomaterials with Enhanced Properties for Energy and Environmental Applications: ... often fail to provide adequate information at economically acceptable costs. ... Also, the effect of dopants on NOx emissions during thermal analysis of ... that nanotechnology-based consumer products are currently entering the market at...

110

A Technology for Electronic Energy Meters Intelligent Accounting Using Distributed Database over TCP/IP Network  

E-Print Network (OSTI)

4 8 A Technology for Electronic Energy Meters Intelligent Accounting Using Distributed Database processing to allow the adequate information integration and resource control in the energy distribution the energy distribution enterprise information. Reading the electronic energy meters is made through

Borissova, Daniela

111

SB Electronics Breaks Ground on New Factory | Department of Energy  

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

SB Electronics Breaks Ground on New Factory SB Electronics Breaks Ground on New Factory SB Electronics Breaks Ground on New Factory April 29, 2010 - 5:22pm Addthis U.S. Rep. Peter Welch (from left), Vermont Lt. Gov. Brian Dubie, SBE board member Win Hunter, SBE board chair Stan Fishkin, Assi U.S. Rep. Peter Welch (from left), Vermont Lt. Gov. Brian Dubie, SBE board member Win Hunter, SBE board chair Stan Fishkin, Assi Paul Lester Communications Specialist, Office of Energy Efficiency and Renewable Energy A Vermont company broke ground on a new factory that will produce cutting-edge technology for electric and hybrid cars and create more than 100 jobs. The event ushering in SB Electronics' power ring capacitor facility in Barre was attended by Vermont Gov. Jim Douglas and federal, state and local

112

Florida Power Electronics Center FPEC | Open Energy Information  

Open Energy Info (EERE)

Electronics Center FPEC Electronics Center FPEC Jump to: navigation, search Name Florida Power Electronics Center (FPEC) Place Orlando, Florida Sector Renewable Energy Product Research institute based at the University of Central Florida, focused on various areas of power electronics for various industries and renewable energy applications. Coordinates 28.538235°, -81.377389° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":28.538235,"lon":-81.377389,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

113

Distance Dependence of Electron Transfer in DNA: The Role of the Reorganization Energy and Free Energy  

E-Print Network (OSTI)

Distance Dependence of Electron Transfer in DNA: The Role of the Reorganization Energy and Free of the solvent reorganization energy and free energy in the heterogeneous DNA environment. DNA is modeled represents water. Model calculations show the importance of including the reorganization energy and the free

Fayer, Michael D.

114

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

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

Integrated Integrated Dynamic Electron Solutions, Inc. America's Next Top Energy Innovator Challenge 333 likes Integrated Dynamic Electron Solutions, Inc. Lawrence Livermore National Laboratory Dynamic Transmission Electron Microscopes DTEM reveal unprecedented details of the mechanisms underlying a host of nanoscale systems that are at the core of our current and future energy economy. A vast and growing number of materials utilized in the energy sector rely on nanostructured materials and their unique dynamic behaviors. DTEM offers researchers the ability to directly interrogate these materials at time and length scales that to-date have either been impossible to access or required the use of multi-billion dollar synchrotrons. DTEM will fundamentally change the approach to basic and applied research in the

115

Undergraduate Research at Jefferson Lab - Determining Electron Beam Energy  

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

Pretzelosity Distribution Pretzelosity Distribution Previous Project (Pretzelosity Distribution) Undergraduate Research Main Index Next Project (Buffered Chemical Polishing) Buffered Chemical Polishing Determining Electron Beam Energy through Spin Precession Methods Student: Gina Mayonado School: McDaniel College Mentored By: Douglas Higinbotham Nuclear physics experiments at Jefferson Lab require that the beam energy of the Continuous Electron Beam Accelerator Facility (CEBAF) accelerator be known to 0.01%. The g-2 spin precession of the electrons as they circulate in the machine can be used to determine the beam energy without relying on the absolute calibration of magnets and devices required for other methods. The precision of this approach needed to be fully investigated. Spin precession methods were investigated by writing an Apple application to

116

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

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

Integrated Integrated Dynamic Electron Solutions, Inc. America's Next Top Energy Innovator Challenge 333 likes Integrated Dynamic Electron Solutions, Inc. Lawrence Livermore National Laboratory Dynamic Transmission Electron Microscopes DTEM reveal unprecedented details of the mechanisms underlying a host of nanoscale systems that are at the core of our current and future energy economy. A vast and growing number of materials utilized in the energy sector rely on nanostructured materials and their unique dynamic behaviors. DTEM offers researchers the ability to directly interrogate these materials at time and length scales that to-date have either been impossible to access or required the use of multi-billion dollar synchrotrons. DTEM will fundamentally change the approach to basic and applied research in the

117

ME EET Seminar: Nanomanufacturing of Flexible Electronics and Energy  

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

ME EET Seminar: Nanomanufacturing of Flexible Electronics and Energy ME EET Seminar: Nanomanufacturing of Flexible Electronics and Energy Systems Speaker(s): Costas Grigoropoulos Date: October 28, 2009 - 12:00pm Location: 90-3122 This talk presents an overview of recent work conducted on the nanomanufacturing of flexible electronics and energy systems. Pulsed lasers have been coupled to near-field-scanning optical microscopes (NSOMs) for nanoprocessing, nanomachining, nanolithography and nanodeposition. Interactions of pulsed laser radiation with nanostructures are investigated and shown to substantially improve contact resistance and device performance compared to furnace annealing. New concepts have been demonstrated for the high throughput, directed growth and assembly of nanostructures. Maskless fabrication of functional devices on flexible

118

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

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

Integrated Integrated Dynamic Electron Solutions, Inc. America's Next Top Energy Innovator Challenge 333 likes Integrated Dynamic Electron Solutions, Inc. Lawrence Livermore National Laboratory Dynamic Transmission Electron Microscopes DTEM reveal unprecedented details of the mechanisms underlying a host of nanoscale systems that are at the core of our current and future energy economy. A vast and growing number of materials utilized in the energy sector rely on nanostructured materials and their unique dynamic behaviors. DTEM offers researchers the ability to directly interrogate these materials at time and length scales that to-date have either been impossible to access or required the use of multi-billion dollar synchrotrons. DTEM will fundamentally change the approach to basic and applied research in the

119

Meson production in high-energy electron-nucleus scattering  

E-Print Network (OSTI)

Experimental studies of meson production through two-photon fusion in inelastic electron-nucleus scattering is now under way. A high-energy photon radiated by the incident electron is fused with a soft photon radiated by the nucleus. The process takes place in the small-angle-Coulomb region of nuclear scattering. We expound the theory for this production process as well as its interference with coherent-radiative-meson production. In particular, we investigate the distortion of the electron wave function due to multiple-Coulomb scattering.

Gran Fldt

2010-06-09T23:59:59.000Z

120

Multi-Agent Systems, Intelligent Robotics, and Cybernetics. Power Electronics, Renewable Energy, and Smart Grid.  

E-Print Network (OSTI)

Electronics, Renewable Energy, and Smart Grid. Computer Science and Engineering. Embedded Systems, Cloud

Wu, Yih-Min

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Methods for detailed energy data collection of miscellaneous and electronic  

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

Methods for detailed energy data collection of miscellaneous and electronic Methods for detailed energy data collection of miscellaneous and electronic loads in a commercial office building Title Methods for detailed energy data collection of miscellaneous and electronic loads in a commercial office building Publication Type Journal Article Year of Publication 2013 Authors Lanzisera, Steven, Stephen Dawson-Haggerty, Iris H. Y. Cheung, Jay Taneja, David Culler, and Richard E. Brown Journal Building and Environment Volume 65 Start Page 170 Pagination 170 - 177 Date Published 7/2013 ISSN 03601323 Keywords benchmarking, field study, MELs, office buildings, Plug-loads Abstract Miscellaneous and electronic loads (MELs) consume about 20% of the primary energy used in U.S. buildings, and this share is projected to increase for the foreseeable future. Our understanding, however, of which devices are most responsible for this energy use is still rudimentary due to the difficulty and expense of performing detailed studies on MELs and their energy use. In order to better understand the energy use of MELs and the design of MELs field metering studies, we conducted a year-long study of MELs in an 89,500 sq. ft. (8310 m2) office building. We present insights obtained from this study using 455 wireless plug-load power meters including the study design process, the tools needed for success, and key other methodology issues. Our study allowed us to quantify, for the study buildings, how many devices we needed to inventory and meter as well as for how long we needed to collect meter data. We find that the study design of earlier work would not have yielded accurate results in our study building. This paper presents these findings along with a brief summary of the energy related results.

122

Electron Energy for H2 + in the Ground State  

Science Conference Proceedings (OSTI)

The 1s? g state of the hydrogen molecular ion is investigated. The result is given as a table in which the electronic energy for a two?Coulomb center is given in seven decimal places for values of internuclear separation R up to 20 in steps of 0.05 a.u.

H. Wind

1965-01-01T23:59:59.000Z

123

Federal Electronics Challenge Gold Award | Department of Energy  

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

Federal Electronics Challenge Gold Award Federal Electronics Challenge Gold Award Federal Electronics Challenge Gold Award June 18, 2009 - 12:24pm Addthis Left to right: EPA Assistant Administrator Jim Jones, Jeff Eagan, Brian Costlow, Kathy Loftin, Tony Castellano, and Kevin Cooke. (photo courtesy of EPA) Left to right: EPA Assistant Administrator Jim Jones, Jeff Eagan, Brian Costlow, Kathy Loftin, Tony Castellano, and Kevin Cooke. (photo courtesy of EPA) On June 18th, DOE Headquarters was presented the Federal Electronics Challenge Gold Award for exemplary performance in Green Computing, including green procurement, energy efficient operations and maintenance, and environmentally safe disposition of surplus equipment. Receiving the award from EPA Assistant Administrator Jim Jones (left) was the

124

Energy of the quasi-free electron in xenon Xianbo Shi a  

E-Print Network (OSTI)

Energy of the quasi-free electron in xenon Xianbo Shi a , Luxi Li a , C.M. Evans a,, G.L. Findley b critical point. The energy of the quasi-free electron, arising from dopant field ionization, in xenon and for the critical isotherm. Key words: supercritical xenon, field ionization, quasi-free electron energy, electron

Evans, Cherice M.

125

Multiplication of high-energy electrons in irradiated materials studied using the Boltzmann kinetic equation  

SciTech Connect

Processes involved in the formation of electron collision cascades created by nonrelativistic high-energy electrons, which can develop in materials exposed to electron and gamma radiation fluxes, have been considered. The problem is solved using the Boltzmann kinetic equation for high-energy electrons moving in a medium. A model scattering indicatrix is constructed for this equation with an arbitrary potential of interaction between colliding particles. Using this scattering indicatrix, the distribution of the particle energies is obtained. Based on this energy distribution (with an arbitrary interparticle interaction potential), a cascade function is found that describes the multiplication of knock-out electrons (electron cascade) generated when a high-energy electron with a certain energy is scattered on the electron subsystem of the irradiated material. The cascade function has been calculated for the Coulomb potential of the interaction between a high-energy electron and atomic-shell electrons.

Ryazanov, A. I., E-mail: ryazanoff@eomail.ru; Mogilyuk, T. I.; Semenov, E. V. [National Research Centre Kurchatov Institute (Russian Federation)

2012-04-15T23:59:59.000Z

126

Kraft Rt Kraft Electronics Inc | Open Energy Information  

Open Energy Info (EERE)

Kraft Rt Kraft Electronics Inc Kraft Rt Kraft Electronics Inc Jump to: navigation, search Name Kraft Rt (Kraft Electronics Inc) Place Budapest, Hungary Zip H-112 Sector Solar Product Equipment manufacturer for the clean energy industry, currently focused on thin-film solar cell production equipment. Coordinates 47.506225°, 19.06482° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":47.506225,"lon":19.06482,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

127

National energy use of consumer electronics in 1999  

SciTech Connect

The major consumer electronics in U.S. homes accounted for nearly 7 percent of U.S. residential electricity consumption in 1999. We attribute more than half of this figure (3.6 percent) to televisions, videocassette recorders, and DVD players, and nearly one-third (1.8 percent) to audio products. Set-top boxes currently account for a relatively small fraction of residential electricity use (0.7 percent), but we expect this end-use to grow quickly with the proliferation of digital set-top boxes, which currently use 40 percent more energy per unit than the average TV set. In all, these consumer electronics plus telephone products consumed 75 TWh in the U.S. in 1999, half of which was consumed while the products were not in use. This energy use is expected to grow as products with new or advanced functionality hit the market.

Rosen, Karen; Meier, Alan; Zandelin, Stefan

2000-02-15T23:59:59.000Z

128

Reduced density matrix hybrid approach: Application to electronic energy transfer  

SciTech Connect

Electronic energy transfer in the condensed phase, such as that occurring in photosynthetic complexes, frequently occurs in regimes where the energy scales of the system and environment are similar. This situation provides a challenge to theoretical investigation since most approaches are accurate only when a certain energetic parameter is small compared to others in the problem. Here we show that in these difficult regimes, the Ehrenfest approach provides a good starting point for a dynamical description of the energy transfer process due to its ability to accurately treat coupling to slow environmental modes. To further improve on the accuracy of the Ehrenfest approach, we use our reduced density matrix hybrid framework to treat the faster environmental modes quantum mechanically, at the level of a perturbative master equation. This combined approach is shown to provide an efficient and quantitative description of electronic energy transfer in a model dimer and the Fenna-Matthews-Olson complex and is used to investigate the effect of environmental preparation on the resulting dynamics.

Berkelbach, Timothy C.; Reichman, David R. [Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027 (United States); Markland, Thomas E. [Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305 (United States)

2012-02-28T23:59:59.000Z

129

ENERGY & ENVIRONMENT DIVISION. ANNUAL REPORT FY 1980  

E-Print Network (OSTI)

are depen- dent on world oil prices. Demographic and econo-Data/Assumptions World Oil Prices HAWAII ENERGY DEMANDunder the RIIA High World Oil Price Scenario, 1976-2000. (

Authors, Various

2010-01-01T23:59:59.000Z

130

Advanced Power Electronics Interfaces for Distributed Energy Workshop Summary: August 24, 2006, Sacramento, California  

DOE Green Energy (OSTI)

The Advanced Power Electronics Interfaces for Distributed Energy Workshop, sponsored by the California Energy Commission Public Interest Energy Research program and organized by the National Renewable Energy Laboratory, was held Aug. 24, 2006, in Sacramento, Calif. The workshop provided a forum for industry stakeholders to share their knowledge and experience about technologies, manufacturing approaches, markets, and issues in power electronics for a range of distributed energy resources. It focused on the development of advanced power electronic interfaces for distributed energy applications and included discussions of modular power electronics, component manufacturing, and power electronic applications.

Treanton, B.; Palomo, J.; Kroposki, B.; Thomas, H.

2006-10-01T23:59:59.000Z

131

Zicom Electronic Security Systems Ltd | Open Energy Information  

Open Energy Info (EERE)

Zicom Electronic Security Systems Ltd Zicom Electronic Security Systems Ltd Jump to: navigation, search Name Zicom Electronic Security Systems Ltd. Place Mumbai, Maharashtra, India Zip 400093 Sector Solar, Wind energy Product Mumbai-based electronic security systems integrator. The firm plans to sell its security business and foray into solar and wind power. Coordinates 19.076191°, 72.875877° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":19.076191,"lon":72.875877,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

132

Electron to Muon Conversion in Low-Energy Electron-Nucleus Scattering  

E-Print Network (OSTI)

We present an estimate of the electron to muon conversion cross section in fixed-target elastic electron scattering. The matrix element $$ is calculated analytically in two scenarios introducing suitable approximations. We consider on the one hand side the case of three light Dirac neutrinos with CKM-type leptonic mixing and on the other hand a typical see-saw scenario. We evaluate the coulombic contribution to the scattering cross section in the limit of vanishing energy transfer to the nucleus and, thus, obtain a realistic estimate for the total conversion cross section. Although we find that in the see-saw scenario the cross section can be enhanced by as much as twenty orders of magnitude in comparison to the Dirac case, it is still not experimentally accessible.

Kai-Peer O. Diener

2004-03-24T23:59:59.000Z

133

Solvent Reorganization Energy and Free Energy Change for Donor/Acceptor Electron Transfer at Micelle Surfaces: Theory and Experiment  

E-Print Network (OSTI)

Solvent Reorganization Energy and Free Energy Change for Donor/Acceptor Electron TransferVed: April 7, 1998 Theories are presented for calculating the solvent reorganization energy and the free region, and the surrounding water. The free energy change accompanying electron transfer can

Fayer, Michael D.

134

How Do You Reduce Energy Use from Computers and Electronics? | Department  

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

Energy Use from Computers and Electronics? Energy Use from Computers and Electronics? How Do You Reduce Energy Use from Computers and Electronics? December 16, 2010 - 6:30am Addthis On Monday, John discussed some ways to reduce the energy used by computers and electronics. Some tips include ensuring your computer is configured for optimal energy savings, turning off devices that aren't in use, and using "smart" power strips. How do you reduce energy use from computers and electronics? Each Thursday, you have the chance to share your thoughts on a question about energy efficiency or renewable energy for consumers. E-mail your responses to the Energy Saver team at consumer.webmaster@nrel.gov. Addthis Related Articles Question of the Week: How Do You Reduce the Energy Used by Computers and Office Electronics?

135

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly...  

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

Marine EM for gas hydrate studies, with first results from the Gulf of Mexico * DoE Atlanta Hydrate Meeting January 25-29, 2010. A talk and Poster presented by KW and SC...

136

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly...  

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

Table 1: Project costing profile for Budget Period 1, Quarter 4 Time period Cost share DoE Plan DoE Actual April 2010 0 8000 7684 May 2010 0 8000 7684 June 2010 0 8000...

137

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly...  

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

We presented some of our results from the Gulf of Mexico gas hydrate cruise at a NETLDoE Hydrate meeting held in Atlanta, Georgia, on January 25-29, 2010. At this meeting we...

138

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly...  

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

the Vulcan technology, representing a form of technology transfer generated from this DOE project. The second collaboration is with Carolyn Ruppel of the USGS to take another...

139

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly...  

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

Table 1: Project costing profile for Budget Period 2, Quarter 4 Time period Cost share DoE Plan DoE Actual October 2010 0 8000 7684 November 2010 0 8000 7684 December 2010...

140

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly...  

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

the Gulf of Mexico gas hydrate CSEM experiment" was presented at AGU and we attended the DoE meeting in late January where we presented our preliminary results in a poster and a 45...

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While these samples are representative of the content of NLEBeta,
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We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly...  

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

that LLNL and USGS sub-awards to Jeff Roberts and Laura Stern would be paid directly by DoE, and instrument purchases would be made with matching funds so that issues of ownership...

142

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly...  

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

2009 i Scripps Institution of Oceanography EXECUTIVE SUMMARY A kick off meeting for the DOE-NETL Hydrate Project was held at the DOE-NETL facility in Morgantown, West Virginia on...

143

Office of Fossil Energy DOE Award No.: DE-NT0005668 Quarterly...  

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

Australia over a gas field in MayJune. While this diverted our attention from the DoE project there was an opportunity to collect a small 15 site CSEM data set over a...

144

How Do You Reduce Energy Use from Computers and Electronics? | Department  

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

How Do You Reduce Energy Use from Computers and Electronics? How Do You Reduce Energy Use from Computers and Electronics? How Do You Reduce Energy Use from Computers and Electronics? December 16, 2010 - 6:30am Addthis On Monday, John discussed some ways to reduce the energy used by computers and electronics. Some tips include ensuring your computer is configured for optimal energy savings, turning off devices that aren't in use, and using "smart" power strips. How do you reduce energy use from computers and electronics? Each Thursday, you have the chance to share your thoughts on a question about energy efficiency or renewable energy for consumers. E-mail your responses to the Energy Saver team at consumer.webmaster@nrel.gov. Addthis Related Articles Question of the Week: How Do You Reduce the Energy Used by Computers and

145

Energy of the Quasi-free Electron in Argon and Krypton C. M. Evans1,  

E-Print Network (OSTI)

Energy of the Quasi-free Electron in Argon and Krypton C. M. Evans1, and G. L. Findley2, 1 these data, a new local Wigner- Seitz model for the density dependent energy V0(P) of a quasi-free electron/medium polarization energy, and includes the thermal kinetic energy of the quasi-free electron. Using this model, V0(P

Evans, Cherice M.

146

Longitudinal bunch profile and electron beam energy spread  

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

Magnets and Power Supplies Up: APS Storage Ring Parameters Previous: Magnets and Power Supplies Up: APS Storage Ring Parameters Previous: Storage Ring Operation Modes Longitudinal bunch profile and electron beam energy spread Longitudinal bunch profile depends mainly on the single bunch charge (or single bunch current). Every APS operating mode has different single bunch current and therefore has different bunch length. The plot below shows measured bunch length dependence on the single bunch current between 1 mA and 18 mA and the fit that uses the formula shown below the plot. The bunch length in this plot is shorter than it was quoted before. Earlier numbers were obtained using a Gaussian fit, present numbers are calculated as true standard deviation. \includegraphics[width=0.8\textwidth]{otherFiles/bunchLength.eps} The following formula obtained by fitting the log of the data above can be

147

Design Considerations for High Energy Electron -- Positron Storage Rings  

DOE R&D Accomplishments (OSTI)

High energy electron-positron storage rings give a way of making a new attack on the most important problems of elementary particle physics. All of us who have worked in the storage ring field designing, building, or using storage rings know this. The importance of that part of storage ring work concerning tests of quantum electrodynamics and mu meson physics is also generally appreciated by the larger physics community. However, I do not think that most of the physicists working tin the elementary particle physics field realize the importance of the contribution that storage ring experiments can make to our understanding of the strongly interacting particles. I would therefore like to spend the next few minutes discussing the sort of things that one can do with storage rings in the strongly interacting particle field.

Richter, B.

1966-11-00T23:59:59.000Z

148

Multi-Agent Systems and Control, Intelligent Robotics, and Cybernetics. Power Electronics, Renewable Energy, and Smart Grid.  

E-Print Network (OSTI)

. Power Electronics, Renewable Energy, and Smart Grid. Computer Science and Engineering. Embedded Systems

Wu, Yih-Min

149

Grant Helps Make U.S. Rare Earth Magnets More Common | Department of Energy  

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

Grant Helps Make U.S. Rare Earth Magnets More Common Grant Helps Make U.S. Rare Earth Magnets More Common Grant Helps Make U.S. Rare Earth Magnets More Common August 6, 2010 - 12:12pm Addthis With sintered rare earth magnets a $4 billion worldwide market, the U.S. could be a bigger producer of these magnets - which are not actually rare - and are used in hybrid vehicle motors and wind turbine generators. | Illustration Courtesy of of Electron Energy Corporation | With sintered rare earth magnets a $4 billion worldwide market, the U.S. could be a bigger producer of these magnets - which are not actually rare - and are used in hybrid vehicle motors and wind turbine generators. | Illustration Courtesy of of Electron Energy Corporation | Kevin Craft Electron Energy Corporation is one of a kind. According to Peter Dent, vice president of business development for the

150

Grant Helps Make U.S. Rare Earth Magnets More Common | Department of Energy  

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

Grant Helps Make U.S. Rare Earth Magnets More Common Grant Helps Make U.S. Rare Earth Magnets More Common Grant Helps Make U.S. Rare Earth Magnets More Common August 6, 2010 - 12:12pm Addthis With sintered rare earth magnets a $4 billion worldwide market, the U.S. could be a bigger producer of these magnets - which are not actually rare - and are used in hybrid vehicle motors and wind turbine generators. | Illustration Courtesy of of Electron Energy Corporation | With sintered rare earth magnets a $4 billion worldwide market, the U.S. could be a bigger producer of these magnets - which are not actually rare - and are used in hybrid vehicle motors and wind turbine generators. | Illustration Courtesy of of Electron Energy Corporation | Kevin Craft Electron Energy Corporation is one of a kind. According to Peter Dent, vice president of business development for the

151

Nanoscale Energy-Filtered Scanning Confocal Electron Microscopy Using a Double-Aberration-Corrected Transmission Electron Microscope  

SciTech Connect

We demonstrate that a transmission electron microscope fitted with two spherical-aberration correctors can be operated as an energy-filtered scanning confocal electron microscope. A method for establishing this mode is described and initial results showing 3D chemical mapping with nanoscale sensitivity to height and thickness changes in a carbon film are presented. Importantly, uncorrected chromatic aberration does not limit the depth resolution of this technique and moreover performs an energy-filtering role, which is explained in terms of a combined depth and energy-loss response function.

Wang Peng; Behan, Gavin; Kirkland, Angus I.; Nellist, Peter D. [Department of Materials, University of Oxford, Parks Road, Oxford OX1 3PH (United Kingdom); Takeguchi, Masaki; Hashimoto, Ayako; Mitsuishi, Kazutaka [National Institute for Materials Science, 3-13 Sakura, Tsukuba, 305-0003 (Japan); Shimojo, Masayuki [Advanced Science Research Laboratory, Saitama Institute of Technology, 1690 Fusaiji, Fukaya 369-0293 (Japan)

2010-05-21T23:59:59.000Z

152

Low-energy positron and electron diffraction and positron-stimulated secondary electron emission from Cu(100)  

Science Conference Proceedings (OSTI)

The results of two series of experiments are reported. In the first, an electrostatically guided beam of low-energy (40-400 eV) positrons, delta/sub p/ was used to study low-energy positron diffraction (LEPD) from a Cu(100) surface under ultrahigh-vacuum conditions. Low-energy electron diffraction (LEED) data were obtained from the same sample in the same apparatus. Comparison of LEPD and LEED intensity versus energy data with model calculations made using computer programs developed by C.B. Duke and collaborators indicated that: LEPD data is adequately modeled using potentials with no exchange-correlation term. The inelastic mean free path, lambda/sub ee/, is shorter for positrons than for electrons at low (LEPD at making a determination of the first-layer spacing of Cu(100) for the particular data set reported. In the second set of experiments, the same apparatus and sample were used to compare positron- and electron-stimulated secondary-electron emission (PSSEE and ESSEE). The results were found to be consistent with existing models of secondary-electron production for metals. The energy distributions of secondary-electrons had broad low-energy (<10 eV) peaks for both positron and electron stimulation. But the PSEE distribution showed no elastic peak. Measurements of secondary-electron angular distributions, found to be cosine-like in both the PSSEE and ESSEE case, were used to obtain total secondary yield ratios, delta, at four beam energies ranging from 40-400 eV. The secondary yield ratio for primary positrons and the yield for primary electrons, delta/sub e/, were similar at these energies. For 400-eV primary particles the secondary yields were found to be delta/sub p/ = 0.94 +/- 0.12 and delta/sub e/ = 0.94 +/- 0./12, giving a ratio of unity for positron-stimulated secondary yield to electron-stimulated secondary yield.

Weiss, A.H.

1983-01-01T23:59:59.000Z

153

Low-energy cutoffs in electron spectra of solar flares: statistical survey  

E-Print Network (OSTI)

The Ramaty High Energy Solar Spectroscopic Imager (RHESSI) X-ray data base (February 2002 -- May 2006) has been searched to find solar flares with weak thermal components and flat photon spectra. Using a regularised inversion technique, we determine the mean electron flux distribution from count spectra of a selection of events with flat photon spectra in the 15--20 keV energy range. Such spectral behaviour is expected for photon spectra either affected by photospheric albedo or produced by electron spectra with an absence of electrons in a given energy range, e.g. a low-energy cutoff in the mean electron spectra of non-themal particles. We have found 18 cases which exhibit a statistically significant local minimum (a dip) in the range of 10--20 keV. The positions and spectral indices of events with low-energy cutoff indicate that such features are likely to be the result of photospheric albedo. It is shown that if the isotropic albedo correction was applied, all low-energy cutoffs in the mean electron spectrum were removed and hence the low energy cutoffs in the mean electron spectrum of solar flares above $\\sim$12 keV cannot be viewed as real features in the electron spectrum. If low-energy cutoffs exist in the mean electron spectra, the energy of low energy cutoffs should be less than $\\sim$12 keV.

E. P. Kontar; E. Dickson; J. Kasparova

2008-05-10T23:59:59.000Z

154

Study on the Effect of Energy Parameter of Electron on the Percentage Depth Dose of Electron Beam Using Monte Carlo Method  

Science Conference Proceedings (OSTI)

In medical linear accelerator, the energy parameter of electron plays important role to produce electron beam. The percentage depth dose of electron beams takes account not only on the value of electron's energy, but also on the type of electron's energy. The aims of this work are to carry on the effect of energy parameter of electron on the percentage depth dose of electron beam. Monte Carlo method is chosen in this project, due to the superior of this method for simulating the random process such as the transport particle in matter. The DOSXYZnrc usercode was used to simulate the electron transport in water phantom. Two aspects of electron's energy parameter were investigated using Monte Carlo simulations. In the first aspect, electron energy's value was varied also its spectrum. In the second aspect, the geometry of electron's energy was taken account on. The parallel beam and the point source were chosen as the geometry of The measurements of percentage depth dose were conducted to compare with its simulation. The ionization chamber was used in these measurements. Presentation of the results of this work is given not only based on the shape of the percentage depth dose from the simulation and measurement, but also on the other aspect in its curve. The result of comparison between the simulation and its measurement shows that the shape of its curve depends on the energy value of electron and the type of its energy. The energy value of electron affected the depth maximum of dose.

Haryanto, Freddy [Department of Physics, Institut Teknologi Bandung (Indonesia)

2010-06-22T23:59:59.000Z

155

A new "In-Use Energy consumption" indicator for the design of energy efficient electr(on)ics  

E-Print Network (OSTI)

A new "In-Use Energy consumption" indicator for the design of energy efficient electr(on)ics Lucie(on)ic industry is the development of energy efficient products during their use. Indeed, regulations, standards energy efficiency more effectively during the design process. The indicator combines the power

Paris-Sud XI, Université de

156

National energy use of consumer electronics in 1999  

E-Print Network (OSTI)

comparison purposes. Estimating National Energy ConsumptionNational energy consumption values for all product typesestimates and national energy consumption estimates, by mode

Rosen, Karen; Meier, Alan; Zandelin, Stefan

2000-01-01T23:59:59.000Z

157

Advanced(Power(Electronics(and( DistributedEnergy(  

NREL%is%anaonal%laboratory%of%the%U.S.%Departmentof%Energy,%O?ce%of%Energy%E?ciency%and%Renewable%Energy ... before%going%to%market.% ... Data(Analysis ...

158

Tips: Home Office and Electronics | Department of Energy  

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

Home Office Efficient with ENERGY STAR. Laptops are far more efficient than desktop computers, especially ENERGY STAR qualified models. Use Smart Power Strips to Save Energy. 2...

159

Suntrack P4Q Electronics SL | Open Energy Information  

Open Energy Info (EERE)

Suntrack P4Q Electronics SL Jump to: navigation, search Name Suntrack (P4Q Electronics SL) Place Alonsotegi, Spain Zip 48810 Sector Solar Product Spain-based firm that manufactures...

160

Next-Generation Power Electronics: Reducing Energy Waste and...  

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

Generation Power Electronics Manufacturing Innovation Institute President Obama Announces New Public-Private Manufacturing Innovation Institute Photovoltaic Cell Material Basics...

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Electron energy distribution functions in low-pressure oxygen plasma columns sustained by propagating surface waves  

Science Conference Proceedings (OSTI)

Electron energy distribution functions (EEDFs) were measured in a 50 mTorr oxygen plasma column sustained by propagating surface waves. Trace-rare-gas-optical-emission spectroscopy was used to derive EEDFs by selecting lines to extract ''electron temperature''(T{sub e}) corresponding to either lower energy electrons that excite high-lying levels through stepwise excitation via metastable states or higher energy electrons that excite emission directly from the ground state. Lower energy T{sub e}'s decreased from 8 to 5.5 eV with distance from the wave launcher, while T{sub e}{approx_equal}6 eV for higher energy electrons and T{sub e}>20 eV for a high-energy tail. Mechanisms for such EEDFs are discussed.

Stafford, L.; Margot, J.; Moisan, M. [Departement de Physique, Universite de Montreal, Montreal, Quebec H3C 3J7 (Canada); Khare, R.; Donnelly, V. M. [Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204 (United States)

2009-01-12T23:59:59.000Z

162

Absolute energy calibration for relativistic electron beams with pointing instability from a laser-plasma accelerator  

Science Conference Proceedings (OSTI)

The pointing instability of energetic electron beams generated from a laser-driven accelerator can cause a serious error in measuring the electron spectrum with a magnetic spectrometer. In order to determine a correct electron spectrum, the pointing angle of an electron beam incident on the spectrometer should be exactly defined. Here, we present a method for absolutely calibrating the electron spectrum by monitoring the pointing angle using a scintillating screen installed in front of a permanent dipole magnet. The ambiguous electron energy due to the pointing instability is corrected by the numerical and analytical calculations based on the relativistic equation of electron motion. It is also possible to estimate the energy spread of the electron beam and determine the energy resolution of the spectrometer using the beam divergence angle that is simultaneously measured on the screen. The calibration method with direct measurement of the spatial profile of an incident electron beam has a simple experimental layout and presents the full range of spatial and spectral information of the electron beams with energies of multi-hundred MeV level, despite the limited energy resolution of the simple electron spectrometer.

Cha, H. J.; Choi, I. W.; Kim, H. T.; Kim, I J.; Nam, K. H.; Jeong, T. M.; Lee, J. [Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju 500-712 (Korea, Republic of)

2012-06-15T23:59:59.000Z

163

Imaging doped silicon test structures using low energy electron microscopy.  

SciTech Connect

This document is the final SAND Report for the LDRD Project 105877 - 'Novel Diagnostic for Advanced Measurements of Semiconductor Devices Exposed to Adverse Environments' - funded through the Nanoscience to Microsystems investment area. Along with the continuous decrease in the feature size of semiconductor device structures comes a growing need for inspection tools with high spatial resolution and high sample throughput. Ideally, such tools should be able to characterize both the surface morphology and local conductivity associated with the structures. The imaging capabilities and wide availability of scanning electron microscopes (SEMs) make them an obvious choice for imaging device structures. Dopant contrast from pn junctions using secondary electrons in the SEM was first reported in 1967 and more recently starting in the mid-1990s. However, the serial acquisition process associated with scanning techniques places limits on the sample throughput. Significantly improved throughput is possible with the use of a parallel imaging scheme such as that found in photoelectron emission microscopy (PEEM) and low energy electron microscopy (LEEM). The application of PEEM and LEEM to device structures relies on contrast mechanisms that distinguish differences in dopant type and concentration. Interestingly, one of the first applications of PEEM was a study of the doping of semiconductors, which showed that the PEEM contrast was very sensitive to the doping level and that dopant concentrations as low as 10{sup 16} cm{sup -3} could be detected. More recent PEEM investigations of Schottky contacts were reported in the late 1990s by Giesen et al., followed by a series of papers in the early 2000s addressing doping contrast in PEEM by Ballarotto and co-workers and Frank and co-workers. In contrast to PEEM, comparatively little has been done to identify contrast mechanisms and assess the capabilities of LEEM for imaging semiconductor device strictures. The one exception is the work of Mankos et al., who evaluated the impact of high-throughput requirements on the LEEM designs and demonstrated new applications of imaging modes with a tilted electron beam. To assess its potential as a semiconductor device imaging tool and to identify contrast mechanisms, we used LEEM to investigate doped Si test structures. In section 2, Imaging Oxide-Covered Doped Si Structures Using LEEM, we show that the LEEM technique is able to provide reasonably high contrast images across lateral pn junctions. The observed contrast is attributed to a work function difference ({Delta}{phi}) between the p- and n-type regions. However, because the doped regions were buried under a thermal oxide ({approx}3.5 nm thick), e-beam charging during imaging prevented quantitative measurements of {Delta}{phi}. As part of this project, we also investigated a series of similar test structures in which the thermal oxide was removed by a chemical etch. With the oxide removed, we obtained intensity-versus-voltage (I-V) curves through the transition from mirror to LEEM mode and determined the relative positions of the vacuum cutoffs for the differently doped regions. Although the details are not discussed in this report, the relative position in voltage of the vacuum cutoffs are a direct measure of the work function difference ({Delta}{phi}) between the p- and n-doped regions.

Nakakura, Craig Yoshimi; Anderson, Meredith Lynn; Kellogg, Gary Lee

2010-01-01T23:59:59.000Z

164

Bihar State Electronics Development Corporation Ltd Beltron | Open Energy  

Open Energy Info (EERE)

Bihar State Electronics Development Corporation Ltd Beltron Bihar State Electronics Development Corporation Ltd Beltron Jump to: navigation, search Name Bihar State Electronics Development Corporation Ltd (Beltron) Place Patna, Bihar, India Zip 800023 Sector Services, Solar Product Manufactures solar lanterns and other PV systems, as part of a business involving other electronic and computer goods and services. References Bihar State Electronics Development Corporation Ltd (Beltron)[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. Bihar State Electronics Development Corporation Ltd (Beltron) is a company located in Patna, Bihar, India . References ↑ "Bihar State Electronics Development Corporation Ltd (Beltron)"

165

Plasma parameters and electron energy distribution functions in a magnetically focused plasma  

SciTech Connect

Spatially resolved measurements of ion density, electron temperature, floating potential, and the electron energy distribution function (EEDF) are presented for a magnetically focused plasma. The measurements identify a central plasma column displaying Maxwellian EEDFs at an electron temperature of about 5 eV indicating the presence of a significant fraction of electrons in the inelastic energy range (energies above 15 eV). It is observed that the EEDF remains Maxwellian along the axis of the discharge with an increase in density, at constant electron temperature, observed in the region of highest magnetic field strength. Both electron density and temperature decrease at the plasma radial edge. Electron temperature isotherms measured in the downstream region are found to coincide with the magnetic field lines.

Samuell, C. M.; Blackwell, B. D.; Howard, J.; Corr, C. S. [Plasma Research Laboratory, Research School of Physics and Engineering, Australian National University, Canberra (Australia)

2013-03-15T23:59:59.000Z

166

Energy Storage & Power Electronics 2008 Peer Review - Agenda/Presentation  

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

& Power Electronics 2008 Peer Review - & Power Electronics 2008 Peer Review - Agenda/Presentation List Energy Storage & Power Electronics 2008 Peer Review - Agenda/Presentation List The 2008 Peer Review Meeting for the DOE Energy Storage and Power Electronics Program (ESPE) was held in Washington DC on Sept. 29-30, 2008. Current and completed program projects were presented and reviewed by a group of industry professionals. The 2008 agenda was composed of 28 projects that covered a broad range of new and ongoing, state-of-the-art, energy storage and power electronics technologies, including updates on the collaborations among DOE/ESPE, CEC in California, and NYSERDA in New York. The agenda & project list is below. Presentations Energy Storage Systems (ESS) presentations Power Electronics (PE) Systems presentations

167

EXPERIMENTAL STUDY OF ENERGY SPREAD IN A SPACE-CHARGE DOMINATED ELECTRON BEAM *  

E-Print Network (OSTI)

energy from the gun. It is believed that this DC energy shift is due to the use of mesh and focusingEXPERIMENTAL STUDY OF ENERGY SPREAD IN A SPACE-CHARGE DOMINATED ELECTRON BEAM * Y. Cui , Y. Zou, A Physics, University of Maryland, College Park, Maryland 20742 Abstract Characterization of beam energy

Valfells, Ágúst

168

Low-energy collisions of multiply charged ions with electrons, atoms and surfaces  

DOE Green Energy (OSTI)

Results are presented from recent experiments at the ORNL-ECR Multicharged Ion Research Facility which have addressed low-energy interactions of multiply charged ions with electrons, hydrogen atoms and metal surfaces. The specific processes for which results are reported are electron-impact excitation, electron capture and ion neutralization. The objective of these studies is a more detailed understanding of the mechanisms which govern the interactions of multicharged ions at low (or near-threshold) collision energies. 18 refs., 8 figs.

Phaneuf, R.A.; Meyer, F.W.; Gregory, D.C.; Havener, C.C.; Zeijlmans van Emmichoven, P.A.; Overbury, S.H.; Zehner, D.M. (Oak Ridge National Lab., TN (USA)); Dunn, G.H.; Thompson, J.S.; Waahlin, E.K. (Joint Inst. for Lab. Astrophysics, Boulder, CO (USA)); Smith, A.C.H. (University Coll., London (UK))

1991-01-01T23:59:59.000Z

169

A picosecond time-resolved electron energy spectrometer based on Cerenkov radiation  

Science Conference Proceedings (OSTI)

The energy spectrum of relativistic electrons is an important characterization of high intensity laser-matter interactions. We present a technique that utilizes Cerenkov radiation to measure the time-resolved energy distribution of electrons. Electrons escaping from targets irradiated by high-intensity laser pulses were measured, demonstrating the feasibility of such a novel diagnostic. Limitations on the time resolution of this diagnostic are also discussed.

Elberson, Lee N.; Hill, Wendell T. III [Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742 (United States); Ping, Yuan; Shepherd, Ronnie L.; Patel, Pravesh K.; Mackinnon, Andrew J. [Lawrence Livermore National Laboratory, Livermore, California 94550-9234 (United States)

2009-02-15T23:59:59.000Z

170

Tailoring electron energy distribution functions through energy confinement in dual radio-frequency driven atmospheric pressure plasmas  

SciTech Connect

A multi-scale numerical model based on hydrodynamic equations with semi-kinetic treatment of electrons is used to investigate the influence of dual frequency excitation on the effective electron energy distribution function (EEDF) in a radio-frequency driven atmospheric pressure plasma. It is found that variations of power density, voltage ratio, and phase relationship provide separate control over the electron density and the mean electron energy. This is exploited to directly influence both the phase dependent and time averaged effective EEDF. This enables tailoring the EEDF for enhanced control of non-equilibrium plasma chemical kinetics at ambient pressure and temperature.

O'Neill, C.; Waskoenig, J. [Centre for Plasma Physics, School of Maths and Physics, Queen's University Belfast, Belfast BT7 1NN (United Kingdom); Gans, T. [Centre for Plasma Physics, School of Maths and Physics, Queen's University Belfast, Belfast BT7 1NN (United Kingdom); York Plasma Institute, Department of Physics, University of York, York YO10 5DD (United Kingdom)

2012-10-08T23:59:59.000Z

171

Apower Electronics Co Ltd AEC | Open Energy Information  

Open Energy Info (EERE)

Guangdong Province - based company which researches, makes and sells Lithium Polymer batteries. References Apower Electronics Co, Ltd. (AEC)1 LinkedIn Connections CrunchBase...

172

AlSb/InAs HIGH ELECTRON MOBILITY TRANSISTORS - Energy ...  

The Naval Research Laboratory (NRL) has developed materials growth and fabrication technology for the manufacture of high-speed, low power AlSb/InAs high electron ...

173

Beijing Sevenstar Electronics Co Ltd | Open Energy Information  

Open Energy Info (EERE)

Co., Ltd Place Beijing Municipality, China Zip 100016 Sector Solar Product China-based Solar PV ingot puller manufacturer. References Beijing Sevenstar Electronics Co., Ltd1...

174

DIRECT COOLED POWER ELECTRONICS SUBSTRATE - Energy Innovation Portal  

The disclosure describes directly cooling a three-dimensional, direct metallization (DM) layer in a power electronics device. To enable sufficient cooling, coolant ...

175

China Electronic Engineering Design Institute CEEDI | Open Energy...  

Open Energy Info (EERE)

Login | Sign Up Wiki Browse Latinoamrica Buildings Clean Energy Economy Coordinated Low Emissions Assistance Network Geothermal Incentives and Policies International Clean Energy...

176

A STUDY ON THE CHOICE OF PARAMETERS FOR A HIGH ENERGY ELECTRON RING ACCELERATOR  

SciTech Connect

The production of high energy (multi-GeV) proton beams by an electron ring accelerator is considered. Both the final energy and intensity of the proton beam depend on the choice of parameters for the electron ring. Possible sets of parameters, consistent with all the known requirements of ring stability, and which optimize the energy and (or) the intensity of the proton beam, are presented.

Bovet, C.; Pellegrini, C.

1970-06-26T23:59:59.000Z

177

EPA to Require Electronic Filing of EISs | Department of Energy  

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

EPA to Require Electronic Filing of EISs EPA to Require Electronic Filing of EISs EPA to Require Electronic Filing of EISs September 18, 2012 - 10:41am Addthis Starting October 1, 2012, all Federal agencies must file their draft and final EISs electronically, pursuant to amended EIS Filing System Guidelines issued by the Environmental Protection Agency (EPA) (77 FR 51530; August 24, 2012). As of October 1, EPA will no longer accept paper copies or CDs of EISs for filing purposes. Electronic filing will eliminate the need to prepare an EIS filing letter and to deliver copies of the EIS to EPA and will enable EPA to host EISs on its website. The amended guidelines remind agencies of their responsibilities to transmit an EIS to commenting agencies and make it available to the public before filing it with EPA (40 CFR 1506.9). This will ensure that the EIS is

178

EPA to Require Electronic Filing of EISs | Department of Energy  

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

EPA to Require Electronic Filing of EISs EPA to Require Electronic Filing of EISs EPA to Require Electronic Filing of EISs September 18, 2012 - 10:41am Addthis Starting October 1, 2012, all Federal agencies must file their draft and final EISs electronically, pursuant to amended EIS Filing System Guidelines issued by the Environmental Protection Agency (EPA) (77 FR 51530; August 24, 2012). As of October 1, EPA will no longer accept paper copies or CDs of EISs for filing purposes. Electronic filing will eliminate the need to prepare an EIS filing letter and to deliver copies of the EIS to EPA and will enable EPA to host EISs on its website. The amended guidelines remind agencies of their responsibilities to transmit an EIS to commenting agencies and make it available to the public before filing it with EPA (40 CFR 1506.9). This will ensure that the EIS is

179

A very low energy compact electron beam ion trap for spectroscopic research in Shanghai  

Science Conference Proceedings (OSTI)

In this paper, a new compact low energy electron beam ion trap, SH-PermEBIT, is reported. This electron beam ion trap (EBIT) can operate in the electron energy range of 60-5000 eV, with a current density of up to 100 A/cm{sup 2}. The low energy limit of this machine sets the record among the reported works so far. The magnetic field in the central drift tube region of this EBIT is around 0.5 T, produced by permanent magnets and soft iron. The design of this EBIT allows adjustment of the electron gun's axial position in the fringe field of the central magnetic field. This turned out to be very important for optimizing the magnetic field in the region of the electron gun and particularly important for low electron beam energy operation, since the magnetic field strength is not tunable with permanent magnets. In this work, transmission of the electron beam as well as the upper limit of the electron beam width under several conditions are measured. Spectral results from test operation of this EBIT at the electron energies of 60, 315, 2800, and 4100 eV are also reported.

Xiao, J.; Fei, Z.; Yang, Y.; Jin, X.; Lu, D.; Shen, Y.; Hutton, R.; Zou, Y. [The Key lab of Applied Ion Beam Physics, Ministry of Education, Shanghai (China); Shanghai EBIT lab, Institute of Modern Physics, Fudan University, Shanghai (China); Liljeby, L. [Manne Siegbahn Laboratory, Stockholm University, Stockholm (Sweden)

2012-01-15T23:59:59.000Z

180

DOE Science Showcase - Free-Electron Lasers | OSTI, US Dept of Energy,  

Office of Scientific and Technical Information (OSTI)

Free-Electron Lasers Free-Electron Lasers Free-Electron Lasers absorb and release energy at any wavelength and can be controlled more precisely than conventional lasers by producing intense powerful light in brief bursts with extreme precision. This innovative technology has opened doors to a vast array of possibilities for manufacturing and for basic research. Read more in the white paper In OSTI Collections: Free-Electron Lasers by Dr. William Watson, Physicist, OSTI staff. Free-Electron Lasers Results in DOE Databases Science.gov Ciencia.Science.gov (Español) WorldWideScience.org Energy Citations Database DOE Information Bridge Relevant Subject Clusters FREE ELECTRON LASERS PARTICLE ACCELERATORS ENGINEERING LASERS ELECTRON BEAMS ACCELERATORS WIGGLER MAGNETS EQUIPMENT ELECTROMAGNETIC RADIATION

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Graphene, Hydrogen and Next-Generation Electronics | Department of Energy  

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

Graphene, Hydrogen and Next-Generation Electronics Graphene, Hydrogen and Next-Generation Electronics Graphene, Hydrogen and Next-Generation Electronics July 22, 2011 - 5:32pm Addthis Graphene grains in several different shapes, controlled by hydrogen. | Courtesy of Oak Ridge National Laboratory Graphene grains in several different shapes, controlled by hydrogen. | Courtesy of Oak Ridge National Laboratory A team of Oak Ridge National Laboratory (ORNL) and New Mexico State University researchers have developed a new approach to growing graphene (one-atom thick carbon sheets) that can help advance next-generation electronics including batteries, transistors and computer chips. Growing graphene usually involves a process called chemical vapor deposition method that produces irregularly shaped grains. Little was known

182

Graphene, Hydrogen and Next-Generation Electronics | Department of Energy  

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

Graphene, Hydrogen and Next-Generation Electronics Graphene, Hydrogen and Next-Generation Electronics Graphene, Hydrogen and Next-Generation Electronics July 22, 2011 - 5:32pm Addthis Graphene grains in several different shapes, controlled by hydrogen. | Courtesy of Oak Ridge National Laboratory Graphene grains in several different shapes, controlled by hydrogen. | Courtesy of Oak Ridge National Laboratory A team of Oak Ridge National Laboratory (ORNL) and New Mexico State University researchers have developed a new approach to growing graphene (one-atom thick carbon sheets) that can help advance next-generation electronics including batteries, transistors and computer chips. Growing graphene usually involves a process called chemical vapor deposition method that produces irregularly shaped grains. Little was known

183

Tianjin Tai Yang Photo electronic Technology Co Ltd | Open Energy...  

Open Energy Info (EERE)

Place Tianjin Municipality, China Sector Solar Product China-based CIGS thin-film solar cell maker. References Tianjin Tai Yang Photo-electronic Technology Co., Ltd1 LinkedIn...

184

Mitsubishi Electric and Electronics USA Inc | Open Energy Information  

Open Energy Info (EERE)

Electric and Electronics USA Inc Electric and Electronics USA Inc Jump to: navigation, search Name Mitsubishi Electric and Electronics USA Inc Place Cypress, California Zip 90630 Sector Solar Product Markets and supports consumer, commercial and industrial electronic products in US, including solar powered. Coordinates 29.975226°, -95.680206° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.975226,"lon":-95.680206,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

185

A Report on Energy Efficiency of Consumer Electronic Devices  

Science Conference Proceedings (OSTI)

Growth in the use of consumer electronics technologies and regular introductions of new products are dramatically increasing electrical load density in worldwide residential and commercial sectors. Gaming consoles such as Xbox 360 or Playstation 3, big-screen high-definition liquid crystal display and plasma televisions, Blu-ray Disc players, and a host of other electronic technologies use large amounts of electricity, and their aggregate load could eventually offset or even negate the decades of savings...

2009-12-16T23:59:59.000Z

186

Characterizing the energy distribution of laser-generated relativistic electrons in cone-wire targets  

Science Conference Proceedings (OSTI)

Transport of relativistic electrons in a solid Cu wire target has been modeled with the implicit hybrid particle-in-cell code LSP to investigate the electron energy distribution and energy coupling from the high-intensity, short-pulse laser to electrons entering to the wire. Experiments were performed on the TITAN laser using a 1.5 mm long Cu wire attached to a Au cone tip at the laser intensity of 1 Multiplication-Sign 10{sup 20} W/cm{sup 2} which was irradiated into the cone. The simulated Cu K{alpha} wire profile and yields matched the measurements using a two-temperature energy distribution. These modeling results show that the cold component of the energy spectrum can be determined with {+-}100 keV accuracy from the fit to the initial experimental fall-off of the K{alpha} emission while the simulated profiles were relatively insensitive to the hotter component of the electron distribution (>4 MeV). The slope of measured escaped electrons was used to determine the hotter temperature. Using exponential energy distributions, the laser-to-electron-in-wire coupling efficiencies inferred from the fits decreased from 3.4% to 1.5% as the prepulse energy increases up to 1 J. The comparison of the energy couplings using the exponential and Relativistic Maxwellian distribution functions showed that the energy inferred in the cold component is independent of the type of the distribution function.

Sawada, H.; Beg, F. N. [Center for Energy Research, University of California San Diego, La Jolla, California 92093 (United States); Higginson, D. P.; Ma, T. [Center for Energy Research, University of California San Diego, La Jolla, California 92093 (United States); Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); Link, A.; Wilks, S. C.; McLean, H. S.; Perez, F.; Patel, P. K. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

2012-10-15T23:59:59.000Z

187

Modeling the free energy surfaces of electron transfer in condensed phases  

E-Print Network (OSTI)

PROOF COPY 509037JCP Modeling the free energy surfaces of electron transfer in condensed phases analytical solution for the ET free energy surfaces demonstrates the following features: i the range of ET reaction coordinates is limited by a one-sided fluctuation band, ii the ET free energies are infinite

Matyushov, Dmitry

188

From Nano-Electronics and Photonics to Renewable Energy  

E-Print Network (OSTI)

: · Electrical Energy Distribution · Electric Cars & Batteries · Wind/Solar/Hydro Power Generation · Robotics #12

Smy, Tom

189

In the OSTI Collections: Free-Electron Lasers | OSTI, US Dept of Energy,  

Office of Scientific and Technical Information (OSTI)

Free-Electron Lasers Free-Electron Lasers Existing Free-Electron Lasers Using Free-Electron Lasers for Measurement and Defense New Free-Electron Laser Designs References Research Organizations Reports available from OSTI's Information Bridge While most types of laser produce coherent light from electric charges bound within atoms, molecules, or solids, unbound charges are the light source in free-electron lasers. Lasers of this type can operate at higher frequencies than are easily achieved with bound-electron lasers. Various uses and designs of free-electron lasers are the focus of different projects sponsored through the Department of Energy. Lasers, like any source of light or other electromagnetic waves, produce waves when some of the electric charges they contain go from having a

190

Theorectical Studies of Excitation in Low-Energy Electron-Polyatomic Molecule Collisions  

SciTech Connect

This paper focuses on the channeling of energy from electronic to nuclear degrees of freedom in electron-polyatomic molecule collisions. We examine the feasibility of attacking the full scattering problem, both the fixed-nuclei electronic problem and the post-collision nuclear dynamics, entirely from first principles. The electron-CO{sub 2} system is presented as an example. We study resonant vibrational excitation, showing how a6 initio, fixed-nuclei electronic cross sections can provide the necessary input for a multi-dimensional treatment of the nuclear vibrational dynamics.

Rescigno, T N; McCurdy, C W; Isaacs, W A; Orel, A E; Meyer, H D

2001-08-13T23:59:59.000Z

191

Low-energy electron and positron diffraction measurements and analysis on Cu(100)  

Science Conference Proceedings (OSTI)

The results of an experimental study and quantitative analysis of the intensity versus energy (I-V) curves are reported for low-energy electron diffraction and low-energy positron diffraction (LEPD) with a brightness-enhanced electrostatically focused positron beam. In a close comparative study, the incident electrons and positrons scattered at a large incident polar angle (thetagreater than or equal to50/sup 0/) with respect to the surface normal off clean Cu(100) and the I-V spectra from six and seven diffraction beams were taken with electrons and positrons, respectively. The analysis of the experimental data from the electron studies indicates first- and second-layer relaxation that is consistent with earlier results. Use of the structure derived from the electron studies, analysis of the I-V curves from the LEPD studies suggests that the attenuation for positrons is greater than the value for electrons over the energy range 50--400 eV, possibly as a result of the enhanced electron-image cloud surrounding the positron. The real part of the inner potential is 0 eV for positrons compared with 11 eV for electrons, in rough agreement with predictions. Further, the best agreement between experiment and calculation for LEPD I-V curve analysis tends to favor the potential formed by changing of the sign of the Coulomb term (relative to electrons), eliminating the exchange, and retaining the correlation term.

Mayer, R.; Zhang, C.; Lynn, K.G.; Frieze, W.E.; Jona, F.; Marcus, P.M.

1987-03-01T23:59:59.000Z

192

FLUKA calculations of radionuclides, star, and neutron fluence in soil around high-energy electron and proton linear accelerators  

E-Print Network (OSTI)

FLUKA calculations of radionuclides, star, and neutron fluence in soil around high-energy electron and proton linear accelerators

Puryear, A; Rokni, S H

2002-01-01T23:59:59.000Z

193

Rajasthan Electronics Instruments Ltd REIL | Open Energy Information  

Open Energy Info (EERE)

Electronics Instruments Ltd REIL Electronics Instruments Ltd REIL Jump to: navigation, search Name Rajasthan Electronics & Instruments Ltd. (REIL) Place Jaipur, Rajasthan, India Zip 302012 Sector Solar Product A joint venture between Govt of India and govt. of rajasthan; manufacturers of electronic products for Agro-Dairy Sector, Solar Photovoltaic Sector, Industrial Electronics Sector and Information Technology. Coordinates 26.89876°, 75.79636° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":26.89876,"lon":75.79636,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

194

Ultraviolet stimulated electron source for use with low energy plasma instrument calibration  

E-Print Network (OSTI)

We report the development of a versatile, compact, low to medium energy electron source. A collimated, monoenergetic beam of electrons, up to 50 mm in diameter, is produced with energies ranging from 0.03 to 30 keV. A uniform electron beam profile is generated by illuminating a metal cathode plate with a near ultraviolet (UV) light emitting diode (LED). A parallel electric field accelerates the electrons away from the cathode plate towards a grounded grid. The beam intensity can be controlled from 10 - 10^9 electrons cm-2 s-1 and the angular divergence of the beam is less than 1 degree FWHM for energies greater than 1 keV.

Henderson, Kevin; Funsten, Herb; MacDonald, Elizabeth

2011-01-01T23:59:59.000Z

195

Energy of the Quasi-free Electron in Supercritical Krypton near the Critical Point Luxi Li and C. M. Evans  

E-Print Network (OSTI)

Energy of the Quasi-free Electron in Supercritical Krypton near the Critical Point Luxi Li and C. M by the quasi-free electron that arises from field ionization of the dopant, and the zero point kinetic energy of the free electron. The overall decrease in the shift of the dopant ionization energy near the critical

Evans, Cherice M.

196

Temporal evolution of the electron energy distribution function in oxygen and chlorine gases under dc and ac fields  

E-Print Network (OSTI)

Temporal evolution of the electron energy distribution function in oxygen and chlorine gases under for publication 19 February 1993) An analysis of the temporal evolution of the electron energy distribution of the distribution function is dominant. The electron energy distribution function (EEDF) can be derived from

Economou, Demetre J.

197

Interuniversity Micro Electronics Centre IMEC | Open Energy Information  

Open Energy Info (EERE)

Interuniversity Micro Electronics Centre IMEC Interuniversity Micro Electronics Centre IMEC Jump to: navigation, search Name Interuniversity Micro-Electronics Centre (IMEC) Place Leuven, Belgium Sector Solar Product An independent non-profit research organization specializing in microelectronics which, hosts a renowned research group on photovoltaic solar cells. Coordinates 50.879385°, 4.70367° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":50.879385,"lon":4.70367,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

198

Driving on "Green" Electrons | Department of Energy  

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

Driving on "Green" Electrons Driving on "Green" Electrons Driving on "Green" Electrons September 6, 2011 - 7:30am Addthis Shannon Brescher Shea Communications Manager, Clean Cities Program So you've decided you want to drive on electricity. You've considered your commute, how often you could plug in your car, and whether you want a plug-in hybrid electric (PHEV) or all-electric vehicle (EV) . But you have one more decision to make - your electricity source. Although electricity is cleaner than petroleum once it gets to your car, not all electricity is created equal. Greenhouse gases that contribute to climate change and smog-forming emissions can come from two different sources in cars - the vehicle's tailpipe and the production of the fuel. The total of these sources is the

199

Diamonds are an Electronic Device's Best Friend | Department of Energy  

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

Diamonds are an Electronic Device's Best Friend Diamonds are an Electronic Device's Best Friend Diamonds are an Electronic Device's Best Friend April 17, 2012 - 11:43am Addthis Ultrananocrystalline diamond has a diverse range of applications from the next generation of high-definition flat panel displays to coatings for mechanical pump seals and tools. | Photo courtesy of Argonne National Lab Ultrananocrystalline diamond has a diverse range of applications from the next generation of high-definition flat panel displays to coatings for mechanical pump seals and tools. | Photo courtesy of Argonne National Lab Charles Rousseaux Charles Rousseaux Senior Writer, Office of Science How does it work? As computer performance has improved, engineers have had a hard time dissipating the heat produced. Diamond film may be the answer, as it's much better at absorbing and

200

Komex Electronics Material Inc KEMI | Open Energy Information  

Open Energy Info (EERE)

Komex Electronics Material Inc KEMI Komex Electronics Material Inc KEMI Jump to: navigation, search Name Komex Electronics Material Inc (KEMI) Place Seoul, Seoul, Korea (Republic) Zip 135709 Sector Solar Product Korean supplier of semiconductor materials for the solar industry. Coordinates 37.557121°, 126.977379° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.557121,"lon":126.977379,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

EcoElectron Ventures Inc | Open Energy Information  

Open Energy Info (EERE)

EcoElectron Ventures Inc EcoElectron Ventures Inc Jump to: navigation, search Name EcoElectron Ventures Inc Address 1106 Second Street, PMB 212 Place Encinitas, California Zip 92024 Region Southern CA Area Coordinates 33.052083°, -117.2793685° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":33.052083,"lon":-117.2793685,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

202

Analysis of the second order exchange self energy of a dense electron gas  

E-Print Network (OSTI)

We investigate the evaluation of the six-fold integral representation for the second order exchange contribution to the self energy of a three dimensional electron gas at the Fermi surface.

M. L. Glasser; George Lamb

2006-11-02T23:59:59.000Z

203

Precision shape modification of nanodevices with a low-energy electron beam  

DOE Patents (OSTI)

Methods of shape modifying a nanodevice by contacting it with a low-energy focused electron beam are disclosed here. In one embodiment, a nanodevice may be permanently reformed to a different geometry through an application of a deforming force and a low-energy focused electron beam. With the addition of an assist gas, material may be removed from the nanodevice through application of the low-energy focused electron beam. The independent methods of shape modification and material removal may be used either individually or simultaneously. Precision cuts with accuracies as high as 10 nm may be achieved through the use of precision low-energy Scanning Electron Microscope scan beams. These methods may be used in an automated system to produce nanodevices of very precise dimensions. These methods may be used to produce nanodevices of carbon-based, silicon-based, or other compositions by varying the assist gas.

Zettl, Alex (Kensington, CA); Yuzvinsky, Thomas David (Berkeley, CA); Fennimore, Adam (Berkeley, CA)

2010-03-09T23:59:59.000Z

204

Atomic-Scale Chemical Imaging via Combination of Scanning Tunneling and Electron Energy Loss Spectroscopies  

E-Print Network (OSTI)

Atomic-Scale Chemical Imaging via Combination of Scanning Tunneling and Electron Energy Loss visualization of chemical reaction pathways to provide mechanistic understanding for catalytically important systems at atomic level Develop atomically resolved chemical imaging platform via combination of low

205

Undulator-Based Laser Wakefield Accelerator Electron Beam Energy Spread and Emittance Diagnostic  

Science Conference Proceedings (OSTI)

The design and current status of experiments to couple the Tapered Hybrid Undulator (THUNDER) to the Lawrence Berkeley National Laboratory (LBNL) laser plasma accelerator (LPA) to measure electron beam energy spread and emittance are presented.

Bakeman, M.S.; Van Tilborg, J.; Nakamura, K.; Gonsalves, A.; Osterhoff, J.; Sokollik, T.; Lin, C.; Robinson, K.E.; Schroeder, C.B.; Toth, Cs.; Weingartner, R.; Gruner, F.; Esarey, E.; Leemans, W.P.

2010-06-01T23:59:59.000Z

206

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

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

7AC Technologies, Inc. National Renewable Energy Laboratory 498 likes 7AC Technologies, based in Woburn, Massachusetts, is developing Liquid Desiccant HVAC systems for Commercial...

207

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

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

Element One, Inc. National Renewable Energy Laboratory 191524 likes Element One, based in Boulder, Colorado, has created the only available coatings that change color when...

208

Heat exchanger cleaning in support of ocean thermal energy conversion (OTEC) - electronics subsystems  

DOE Green Energy (OSTI)

Electronics systems supporting the development of biofouling countermeasures for Ocean Thermal Energy Conversion (OTEC) are described. Discussed are the thermistor/thermopile amplifiers, heaters, flowmeters, temperature measurement, control systems for chlorination, flow driven brushes, and recirculating sponge rubber balls. The operation and troubleshooting of each electronic subsystem is documented.

Lott, D.F.

1980-12-01T23:59:59.000Z

209

Determination of the displacement energy of O, Si and Zr under electron beam irradiation  

Science Conference Proceedings (OSTI)

The response of nanocrystalline, stabilizer-free cubic zirconia thin films on a Si substrate to electron beam irradiation with energies of 4, 110 and 200 keV and fluences up to {approx}1.5 x 10{sup 22} e m{sup -2} has been studied to determine the displacement energies. The 110 and 200 keV irradiations were performed in situ using a transmission electron microscope; the 4 keV irradiations were performed ex situ using an electron gun. In all three irradiations, no structural modification of the zirconia was observed, despite the high fluxes and fluences. However the Si substrate on which the zirconia film was deposited was amorphized under the 200 keV electron irradiation. Examination of the electron-solid interactions reveals that the kinetic energy transfer from the 200 keV electrons to the silicon lattice is sufficient to cause atomic displacements, resulting in amorphization. The kinetic energy transfer from the 200 keV electrons to the oxygen sub-lattice of the zirconia may be sufficient to induce defect production, however, no evidence of defect production was observed. The displacement cross-section value of Zr was found to be {approx}400 times greater than that of O indicating that the O atoms are effectively screened from the electrons by the Zr atoms, and, therefore, the displacement of O is inefficient.

Edmondson, Philip D [ORNL; Weber, William J [ORNL; Namavar, Fereydoon [University of Nebraska Medical Center; Zhang, Yanwen [ORNL

2012-01-01T23:59:59.000Z

210

Methods for coupling radiation, ion, and electron energies in grey Implicit Monte Carlo  

Science Conference Proceedings (OSTI)

We present three methods for extending the Implicit Monte Carlo (IMC) method to treat the time-evolution of coupled radiation, electron, and ion energies. The first method splits the ion and electron coupling and conduction from the standard IMC radiation-transport ... Keywords: Implicit Monte Carlo, Thermal radiation transport, Three-temperature model

T. M. Evans; J. D. Densmore

2007-08-01T23:59:59.000Z

211

Relativistic and Nonrelativistic Descriptions of Electron Energy Levels in a Static Magnetic Field  

E-Print Network (OSTI)

The physical consequences of the relativistic and nonrelativistic approaches to describe the energy levels of electrons which propagate in a static homogeneous magnetic field are considered. It is shown that for a given strength of the magnetic field, the quantized energy levels of the electrons calculated by nonrelativistic and relativistic equations differ substantially, up to few orders of magnitude for a magnetic field of about 1 Tesla. Experimental verification to resolve the discrepancy would be very welcome.

H. J. Schreiber; N. B. Skachkov

2008-03-28T23:59:59.000Z

212

Program on Technology Innovation: New Power Converter Topologies for Minimizing Energy Consumption of Electronic Appliances  

Science Conference Proceedings (OSTI)

The growth of consumer electronics in the household and office space has made electronic loads a significant portion of the grid. The total energy consumed by these appliances is typically governed by the energy losses in their idle mode or during lightly loaded operation. The power supplies designed for these appliances are typically optimized for thermal management at the maximum power point and with low cost in mind. Most power supplies have lower efficiencies at light loads than at their rated ...

2012-11-05T23:59:59.000Z

213

Conversion electrons used to monitor the energy scale of electron spectrometer near tritium endpoint - a simulation study  

E-Print Network (OSTI)

Measurements of the endpoint region of the tritium beta-decay spectrum provides good possibility to determine neutrino mass. This, however, needs a perfect monitoring of the spectrometer energy scale. A parallel measurement of electron line of known energy - in particular the 83mKr conversion K-line - may serve well to this purpose. The 83Rb decaying to 83mKr seems to be a very suitable radioactive source due to its halflife of 86.2 day. In this work, we determine the amount of 83Rb which is necessary for a successful monitoring.

M. Rysavy

2006-01-15T23:59:59.000Z

214

FD SOI Hall sensor electronics interfaces for energy measurement  

Science Conference Proceedings (OSTI)

This paper presents a SOI Hall sensor based microsystem for energy measurement. The mixed-mode signal circuitry has been entirely designed and integrated in the experimental 0.5@mm fully depleted SOI 3V technology. It consists of an integrated Hall element, ... Keywords: Energy meter, Hall sensor, Microsystem, SOI

Marija Blagojevic; Maher Kayal; Daniela De Venuto

2006-12-01T23:59:59.000Z

215

Electronic poster: eeclust: energy-efficient cluster computing  

Science Conference Proceedings (OSTI)

The eeClust project aims at reducing the energy consumption of applications on a HPC cluster by an integrated approach of analysis, efficient management of hardware power-states and monitoring of the clusters power consumption. The application is traced ... Keywords: analysis, benchmark, energy, monitoring, power

Michael Knobloch; Timo Minartz; Daniel Molka; Stephan Krempel; Thomas Ludwig; Bernd Mohr

2011-11-01T23:59:59.000Z

216

Impulsive phase flare energy transport by large-scale Alfven waves and the electron acceleration problem  

E-Print Network (OSTI)

The impulsive phase of a solar flare marks the epoch of rapid conversion of energy stored in the pre-flare coronal magnetic field. Hard X-ray observations imply that a substantial fraction of flare energy released during the impulsive phase is converted to the kinetic energy of mildly relativistic electrons (10-100 keV). The liberation of the magnetic free energy can occur as the coronal magnetic field reconfigures and relaxes following reconnection. We investigate a scenario in which products of the reconfiguration - large-scale Alfven wave pulses - transport the energy and magnetic-field changes rapidly through the corona to the lower atmosphere. This offers two possibilities for electron acceleration. Firstly, in a coronal plasma with beta energies on the order of 10 keV and above, including by repeated interactions between electrons and wavefronts. Secondly, when they reflect and mode-convert in the chromosphere, a cascade to high wavenumbers may develop. This will also accelerate electrons by turbulence, in a medium with a locally high electron number density. This concept, which bridges MHD-based and particle-based views of a flare, provides an interpretation of the recently-observed rapid variations of the line-of-sight component of the photospheric magnetic field across the flare impulsive phase, and offers solutions to some perplexing flare problems, such as the flare "number problem" of finding and resupplying sufficient electrons to explain the impulsive-phase hard X-ray emission.

L. Fletcher; H. S. Hudson

2007-12-20T23:59:59.000Z

217

High-energy electron-helium scattering in a Nd:YAG laser field  

SciTech Connect

We report measurements of the scattering of electrons by helium atoms in the presence of 1.17 eV photons from a Nd:YAG laser. The incident energy of the electrons was in the range 50-350 eV, and the polarization of the laser was arranged to be parallel to electrons scattered through 135 deg. Energy-shifted peaks corresponding both to one- and two-photon emission were observed. Calculations using the Kroll-Watson approximation are perfectly consistent with the data.

Harak, B. A. de [Physics Department, Illinois Wesleyan University, P.O. Box 2900, Bloomington, Illinois 61702-2900 (United States); Ladino, L.; MacAdam, K. B.; Martin, N. L. S. [Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055 (United States)

2011-02-15T23:59:59.000Z

218

Sharp Electronics Europe GmbH | Open Energy Information  

Open Energy Info (EERE)

Europe GmbH Europe GmbH Jump to: navigation, search Name Sharp Electronics (Europe) GmbH Place Hamburg, Germany Zip 20097 Sector Solar Product German-based company Sharp Electronics GmbH is an electric appliance maker and a manufacturer of solar photovoltaic materials and systems. Coordinates 53.553345°, 9.992455° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":53.553345,"lon":9.992455,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

219

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

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

7AC Technologies, Inc. 7AC Technologies, Inc. National Renewable Energy Laboratory 498 likes 7AC Technologies, based in Woburn, Massachusetts, is developing Liquid Desiccant HVAC systems for Commercial and Industrial buildings using technology from the National Renewable Energy Laboratory. These Liquid Desiccant HVAC systems deliver a 50 to 75 percent reduction in energy usage over conventional HVAC units. The system consists of a membrane conditioner responsible for drying and cooling the air and a heat-driven regenerator. The liquid desiccant design allows for the utilization of solar or waste heat sources, paving the way for net-zero energy retrofits to existing buildings with costs comparable to conventional HVAC. Learn More Borla Performance Industries, Inc. Oak Ridge National Laboratory

220

Detailed Energy Data Collection for Miscellaneous and Electronic...  

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

and varied usage patterns. Few studies have collected field data on the long-term energy use of MELs, due to the difficulty and expense of traditional power meters. Recent...

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221

Wanxiang Silicon Peak Electronics Co Ltd | Open Energy Information  

Open Energy Info (EERE)

Wanxiang Silicon Peak Electronics Co Ltd Wanxiang Silicon Peak Electronics Co Ltd Jump to: navigation, search Name Wanxiang Silicon-Peak Electronics Co Ltd Place Kaihua, Zhejiang Province, China Zip 324300 Sector Solar Product Maker of monocrystalline silicon ingots and wafers and subsidiary of the Wanxiang Group which includes solar cell and module maker Wanxiang Solar. Coordinates 29.140209°, 118.405113° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":29.140209,"lon":118.405113,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

222

Shenzhen Nenglian Electronic Co Ltd | Open Energy Information  

Open Energy Info (EERE)

Nenglian Electronic Co Ltd Nenglian Electronic Co Ltd Jump to: navigation, search Name Shenzhen Nenglian Electronic Co Ltd Place Shenzhen, Guizhou Province, China Zip 518033 Sector Solar Product Chinese PV power station builder and PV module and PV application products manufacturer; it is also the authorized agent of Shell Solar to market Shell PV products. Coordinates 22.546789°, 114.112556° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":22.546789,"lon":114.112556,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

223

Energy and Effective Mass Dependence of Electron Tunnelling Through Multiple Quantum barriers in Different Heterostructures  

E-Print Network (OSTI)

Tunneling of electrons through the barriers in heterostructures has been studied, within unified transfer matrix approach. The effect of barrier width on the transmission coefficient of the electrons has been investigated for different pairs of semi conducting materials that are gaining much importance recently. These pairs include CdS/CdSe, AlGaAs/GaAs and InAs/AlSb. Barrier dimensions have been reduced from 20nm to 5nm to observe the effect of scaling on tunneling properties. Material depended is highlighted for electrons with energy varying from below the barrier height to above it. The electron effective mass inside the barrier and the well are often different. The results show that the coupling effect leads to significant changes on the transmission effect. . The effective-mass dependant transmission coefficient has been plotted with respect to electron energy. The computation is based on the transfer matrix method by using MATLAB.

Jatindranath Gain; Madhumita Das Sarkar; Sudakshina Kundu

2010-02-09T23:59:59.000Z

224

TEE-0025 - In the Matter of LG Electronics, Inc. | Department of Energy  

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

5 - In the Matter of LG Electronics, Inc. 5 - In the Matter of LG Electronics, Inc. TEE-0025 - In the Matter of LG Electronics, Inc. This Decision and Order considers an Application for Exception filed by LG Electronics, Inc. (LG) seeking exception relief from the provisions of 10 C.F.R. Part 430, Energy Conservation Program for Consumer Products: Energy Conservation Standards for Refrigerators, Refrigerator-Freezers and Freezers (Refrigerator Efficiency Standards). In its exception request, LG asserts that the firm would suffer a gross inequity if required to adhere to the Refrigerator Efficiency Standards, codified at 10 C.F.R. § 430.32. If LG's Application for Exception were granted, LG would receive exception relief from the energy efficiency standard applicable to a new automatic defrost refrigerator-freezer, with bottom mounted freezer and

225

The Energy Spectra and Relative Abundances of Electrons and Positrons in the Galactic Cosmic Radiation  

E-Print Network (OSTI)

Observations of cosmic-ray electrons and positrons have been made with a new balloon-borne detector, HEAT (the "High-Energy Antimatter Telescope"), first flown in 1994 May from Fort Sumner, NM. We describe the instrumental approach and the data analysis procedures, and we present results from this flight. The measurement has provided a new determination of the individual energy spectra of electrons and positrons from 5 GeV to about 50 GeV, and of the combined "all-electron" intensity (e+ + e-) up to about 100 GeV. The single power-law spectral indices for electrons and positrons are alpha = 3.09 +/- 0.08 and 3.3 +/- 0.2, respectively. We find that a contribution from primary sources to the positron intensity in this energy region, if it exists, must be quite small.

S. W. Barwick; J. J. Beatty; C. R. Bower; C. J. Chaput; S. Coutu; G. A. de Nolfo; M. A. DuVernois; D. Ellithorpe; D. Ficenec; J. Knapp; D. M. Lowder; S. McKee; D. Muller; J. A. Musser; S. L. Nutter; E. Schneider; S. P. Swordy; G. Tarle; A. D. Tomasch; E. Torbet

1997-12-24T23:59:59.000Z

226

Energy spectrum of the electrons accelerated by reconnection electric field: exponential or power-law?  

E-Print Network (OSTI)

The direct current (DC) electric field near the reconnection region has been proposed as an effective mechanism to accelerate protons and electrons in solar flares. A power-law energy spectrum was generally claimed in the simulations of electron acceleration by the reconnection electric field. However, in most of the literature, the electric and magnetic fields were chosen independently. In this paper, we perform test particle simulations of electron acceleration in reconnecting magnetic field, where both the electric and magnetic fields are adopted from numerical simulations of the MHD equations. It is found that the accelerated electrons present a truncated power-law energy spectrum with an exponential tail at high energies, which is analogous to the case of diffusive shock acceleration. The influences of the reconnection parameters on the spectral feature are also investigated, such as the longitudinal and transverse components of the magnetic field and the size of the current sheet. It is suggested that t...

Liu, W J; Ding, M D; Fang, C

2008-01-01T23:59:59.000Z

227

Estimation of the electron density and radiative energy losses in a calcium plasma source based on an electron cyclotron resonance discharge  

SciTech Connect

The parameters of a calcium plasma source based on an electron cyclotron resonance (ECR) discharge were calculated. The analysis was performed as applied to an ion cyclotron resonance system designed for separation of calcium isotopes. The plasma electrons in the source were heated by gyrotron microwave radiation in the zone of the inhomogeneous magnetic field. It was assumed that, in such a combined trap, the energy of the extraordinary microwave propagating from the high-field side was initially transferred to a small group of resonance electrons. As a result, two electron components with different transverse temperatures-the hot resonance component and the cold nonresonance component-were created in the plasma. The longitudinal temperatures of both components were assumed to be equal. The entire discharge space was divided into a narrow ECR zone, where resonance electrons acquired transverse energy, and the region of the discharge itself, where the gas was ionized. The transverse energy of resonance electrons was calculated by solving the equations for electron motion in an inhomogeneous magnetic field. Using the law of energy conservation and the balance condition for the number of hot electrons entering the discharge zone and cooled due to ionization and elastic collisions, the density of hot electrons was estimated and the dependence of the longitudinal temperature T{sub e Parallel-To} of the main (cold) electron component on the energy fraction {beta} lost for radiation was obtained.

Potanin, E. P., E-mail: potanin@imp.kiae.ru; Ustinov, A. L. [National Research Centre Kurchatov Institute (Russian Federation)

2013-06-15T23:59:59.000Z

228

The Cosmic Electron Background in Low Energy IACTs. Effect of the Geomagnetic Field  

E-Print Network (OSTI)

A new generation of low threshold Imaging Atmospheric Cherenkov Telescopes (IACTs) may reach gamma-ray energies about 10 GeV with high sensitivities and very large collection areas. At these low energies cosmic electrons significantly contribute to the telescope background and are in principle indistinguishable from gamma-rays. In this paper we estimate the electron background expected for two configurations of the low energy IACT MAGIC. We discuss in particular the reduction of the background caused by the geomagnetic field at different locations on the Earth's surface.

J. Cortina; J. C. Gonzalez

2000-10-17T23:59:59.000Z

229

Low energy conversion electron detection in superfluid He3 at ultra-low temperature  

E-Print Network (OSTI)

We report on the first results of the MACHe3 (MAtrix of Cells of Helium 3) prototype experiment concerning the measurement of low energy conversion electrons at ultra-low temperature. For the first time, the feasibility of the detection of low energy electrons is demonstrated in superfluid He3-B cooled down to 100 microK. Low energy electrons at 7.3 keV coming from the K shell conversion of the 14.4 keV nuclear transition of a low activity Co57 source are detected, opening the possibility to use a He3-based detector for the detection of Weakly Interacting Massive Particles (WIMPs) which are expected to release an amount of energy higher-bounded by 5.6 keV.

E. Moulin; C. Winkelmann; J. F. Macias-Perez; Yu. M. Bunkov; H. Godfrin; D. Santos

2005-04-12T23:59:59.000Z

230

Assessment of Retro-Fit Energy Savings Devices: Line-Side Electronic Dimmer  

Science Conference Proceedings (OSTI)

The past two decades have seen the introduction of several new technologies, such as retrofit energy saving devices (RESDs), which are intended to save energy. In most cases, RESDs devices are added after-the-fact to existing commercial and industrial electrical systems with the intent to improve energy efficiency, usually without directly affecting end-use equipment. In some cases, an RESD such as an electronic lamp dimmer is part of the original construction of a residential or commercial facility. Dev...

2010-06-01T23:59:59.000Z

231

Harmonic Generation at Lower Electron Energies for a Hard X-ray FEL  

SciTech Connect

There are several schemes currently being investigated to pre-bunch the electron beam and step the coherent bunching up to higher harmonics, all which require modulator sections which introduce additional energy modulation. X-ray FELs operate in a regime where the FEL parameter, {rho} is equal to or less than the effective energy spread introduced from the emittance in the electron beam. Because of this large effective energy spread, the energy modulation introduced from harmonic generation schemes would seriously degrade FEL performance. This problem can be mitigated by incorporating the harmonic generation scheme at a lower electron kinetic energy than the energy at the final undulator. This will help because the effective energy spread from emittance is reduced at lower energies, and can be further reduced by making the beam transversely large. Then the beam can be squeezed down slowly enough in the subsequent accelerator sections so that geometric debunching is mitigated. The beam size inside the dispersive chicanes and in the accelerator sections must be carefully optimized to avoid debunching, and each subharmonic modulator section must generate enough energy modulation to overcome the SASE noise without significantly increasing the gain length in the final undulator. Here we show analytical results that demonstrate the feasibility of this harmonic pre-bunching scheme.

Marksteiner, Quinn R. [Los Alamos National Laboratory

2011-01-01T23:59:59.000Z

232

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

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

TrakLok Corporation TrakLok Corporation Oak Ridge National Laboratory 463 likes TrakLok, Inc., based in Knoxville, Tenn., intends to use an Oak Ridge National Laboratory (ORNL)-developed, technology for tagging, tracking, locating and communicating with cargo containers and trailers in transit. The ORNL technology provides an avenue to meet increasing requirements for shipping containers to be "smart boxes" that can be tracked electronically. TrakLok uses GPS technology and satellite communications as part of its tracking and warning capability and international container locking technology to protect against container tampering, theft, vandalism and smuggling. Shipments can be tracked through a web-accessible, information technology-based global tracking system to provide real time visibility of

233

Integrated Dynamic Electron Solutions, Inc. | Department of Energy  

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

Element One, Inc. Element One, Inc. National Renewable Energy Laboratory 191524 likes Element One, based in Boulder, Colorado, has created the only available coatings that change color when detecting hydrogen and other hazardous gas leaks, either reversibly or non-reversibly, to provide both current and historical information about leaks. Element One's patented gas indicators and sensors use catalyzed thin films or nanoparticles of a transition metal oxide to create very low cost sensors for use in industrial and consumer environments, greatly reducing the potential for undetected leaks and their cost and safety implications. This technology is also being integrated for use in refineries, industry gas and fuel cells systems and was developed using technology from the National Renewable Energy Laboratory.

234

Electron energy losses near pulsar polar caps: a Monte Carlo approach  

E-Print Network (OSTI)

We use Monte Carlo approach to study the energetics of electrons accelerated in a pulsar polar gap. As energy-loss mechanisms we consider magnetic Compton scattering of thermal X-ray photons and curvature radiation. The results are compared with previous calculations which assumed that changes of electron energy occurred smoothly according to approximations for the average energy loss rate due to the Compton scattering. We confirm a general dependence of efficiency of electron energy losses due to inverse Compton mechanism on the temperature and size of a thermal polar cap and on the pulsar magnetic field. However, we show that trajectories of electrons in energy-altitude space as calculated in the smooth way do not always coincide with averaged Monte Carlo behaviour. In particular, for pulsars with high magnetic field strength ($B_{pc} > 3\\times 10^{12}$ G) and low thermal polar cap temperatures ($T < 5\\times 10^6$ K) final electron Lorentz factors computed with the two methods may differ by a few orders of magnitude. We discuss consequences for particular objects with identified thermal X-ray spectral components like Geminga, Vela, and PSR B1055-52.

J. Dyks; B. Rudak

2000-03-07T23:59:59.000Z

235

Energy Secretary Chu to Visit Delphi Power Electronics Plant in Kokomo  

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

Visit Delphi Power Electronics Plant in Visit Delphi Power Electronics Plant in Kokomo Indiana Energy Secretary Chu to Visit Delphi Power Electronics Plant in Kokomo Indiana July 14, 2010 - 12:00am Addthis Washington D.C. - On Friday, July 16, Energy Secretary Steven Chu will travel to Kokomo, Indiana to tour Delphi Automotive Systems manufacturing plant with Mayor Greg Goodnight. Remarks will be given following the tour. The trip is part of a nationwide initiative led by President Obama and members of the cabinet to highlight the nation's success in launching an advanced battery and electric vehicle manufacturing industry in the United States. Under the American Recovery and Reinvestment Act Delphi received an award of $89.3 million to build the power electronics manufacturing facility in Kokomo. This award is a part of the Recovery Act's $2 billion investments

236

Low energy electron beam induced vacancy activation in GaN  

Science Conference Proceedings (OSTI)

Experimental evidence on low energy electron beam induced point defect activation in GaN grown by metal-organic vapor phase epitaxy (MOVPE) is presented. The GaN samples are irradiated with a 5-20 keV electron beam of a scanning electron microscope and investigated by photoluminescence and positron annihilation spectroscopy measurements. The degradation of the band-to-band luminescence of the irradiated GaN films is associated with the activation of point defects. The activated defects were identified as in-grown Ga-vacancies. We propose that MOVPE-GaN contains a significant concentration of passive V{sub Ga}-H{sub n} complexes that can be activated by H removal during low energy electron irradiation.

Nykaenen, H.; Suihkonen, S.; Sopanen, M. [Department of Micro- and Nanosciences, Aalto University, P.O. Box 13500, FI-00076 Aalto (Finland); Kilanski, L. [Department of Applied Physics, Aalto University, P.O. Box 11100, FI-00076 Aalto (Finland); Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/56, 02-668 Warsaw (Poland); Tuomisto, F. [Department of Applied Physics, Aalto University, P.O. Box 11100, FI-00076 Aalto (Finland)

2012-03-19T23:59:59.000Z

237

Electron capture in ion-molecule collisions at intermediate energy  

DOE Green Energy (OSTI)

Recent progress of theoretical charge transfer study in ion-molecule collisions at the intermediate energy is reviewed. Concept of close and distant collisions obtained from extensive ion-atom collision studies is identified so that it can be utilized to model two distinct collision processes. For a close collision, explicit representation of the whole collision complex is necessary to describe collision dynamics correctly, while a model potential approach for molecule is appropriate for a distant collision. It is shown that these two distinct models are indeed capable of reproducing experimental charge transfer cross sections. Some remarks for further theoretical study of ion-molecule collisions are also given. 21 refs., 8 figs.

Kumura, M.

1986-01-01T23:59:59.000Z

238

Microsoft Word - DE-NT0005667 Quarterly Report 4-11 to 6-11.doc  

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

DOE A ward N o.: D E---NT0005667 Quarterly Progress Report April 2 011 - J une 2 011 ASSESSING THE EFFICACY OF THE AEROBIC METHANOTROPHIC BIOFIL- TER IN METHANE HYDRATE ENVIRONMENTS Submitted b y: University of California Santa Barbara CA 93106 Principal Investigator: David L. Valentine Prepared for: United S tates D epartment o f E nergy National E nergy T echnology L aboratory July 31, 2011 Office of Fossil Energy 1 TABLE OF CONTENTS Executive Summary.......................................................................................... 2 Progress, Results and Discussion............................................................................3 Conclusion.................................................................................................... 5 Cost Status......................................................................................................6

239

GeV Wakefield acceleration of low energy electron bunches using Petawatt lasers  

Science Conference Proceedings (OSTI)

The possibility of accelerating electrons to the GeV level using a Petawatt laser focused in a uniform plasma is investigated. The proposed scheme relies on the wakefield acceleration of an electron bunch from a state-of-the-art radio-frequency accelerator. Using an analytical model as well as numerical simulations performed with WAKE [P. Mora and T. M. Antonsen, Phys. Plasmas 4, 217 (1997)], a systematical study of the injector parameters is carried out. In particular, it is found that the quality of the accelerated electron bunch--in terms of bunch length and energy spread--depends crucially on the injection energy. Injection energies of a few MeV lead to a GeV electron beam with sub-100 fs bunches and 10% energy spreads. Most of the features of the acceleration process can be explained within the linear response framework, including both the reduction of energy spread and bunch length at low injection energies. The role of nonlinear effects is discussed.

Lifschitz, A.F.; Faure, J.; Malka, V.; Mora, P. [Laboratoire d'Optique Appliquee, Ecole Polytechnique, ENSTA, CNRS, UMR 7639, 91761 Palaiseau (France); Laboratoire de Physique Theorique, Ecole Polytechnique, CNRS, UMR 7644, 91128 Palaiseau (France)

2005-09-15T23:59:59.000Z

240

LEIC - A Polarized Low Energy Electron-ion Collider at Jefferson Lab  

Science Conference Proceedings (OSTI)

A polarized electron-ion collider is envisioned as the future nuclear science program at JLab beyond the 12 GeV CEBAF. Presently, a medium energy collider (MEIC) is set as an immediate goal with options for a future energy upgrade. A comprehensive design report for MEIC has been released recently. The MEIC facility could also accommodate electron and proton/ion collisions in a low CM energy range, covering proton energies from 10 to 25 GeV and ion energies with a similar magnetic rigidity, for additional science reach. In this paper, we present a conceptual design of this low energy collider, LEIC, showing its luminosity can reach above 10{sup 33} cm{sup -2}s{sup -1}. The design specifies that the large booster of the MEIC is converted to a low energy ion collider ring with an interaction region and an electron cooler integrated into it. The design provides options for either sharing the detector with the MEIC or a dedicated low energy detector in a third collision point, with advantages of either a minimum cost or extra detection parallel to the MEIC operation, respectively. The LEIC could be positioned as the first and low cost phase of a multi-stage approach to realize the full MEIC.

Derbenev, Yaroslav S. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Hutton, Andrew M. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Krafft, Geoffrey A. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Li, Rui [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Lin, Fanglei [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Morozov, Vasiliy [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Nissen, Edward W. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Yunn, Byung C. [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Zhang, He [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States); Sullivan, Michael K. [SLAC National Accelerator Laboratory, Menlo Park, CA (United States); Zhang, Yuhong [Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)

2013-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Energy spread inhibition of compact electron bunch driven by circularly polarized laser pulse  

Science Conference Proceedings (OSTI)

The problem of energy dispersion of a direct laser accelerated electron bunch emerging from a nano-meshed graphene target is investigated. To study the effects of the laser polarization state on the energy spread, numerical calculations and particle-in-cell simulations of evolving one-dimensional confined electron bunch dynamics are performed. It is proved that a circularly polarized laser pulse can inhibit energy dispersion more efficiently than a linearly polarized laser pulse with the same laser and target parameters. That is because the Coulomb expansion of the electron bunch gets more attenuated for a circularly polarized laser pulse compared with a linearly polarized pulse due to the slowly varying temporal laser intensity.

Wen Meng [State Key Laboratory of Nuclear Physics and Technology, and Key Lab of High Energy Density Physics Simulation, CAPT, Peking University, Beijing 100871 (China); Institute of Photonics and Photon-Technology, Northwest University, Xi'an 710069 (China); Wu Haicheng; Lu Yuanrong; Chen Jiaer; Yan, Xueqing [State Key Laboratory of Nuclear Physics and Technology, and Key Lab of High Energy Density Physics Simulation, CAPT, Peking University, Beijing 100871 (China); Jin Luling [Department of Physics, Northwest University, Xi'an 710069 (China)

2012-08-15T23:59:59.000Z

242

Cross sections for electron scattering by propane in the low- and intermediate-energy ranges  

Science Conference Proceedings (OSTI)

We present a joint theoretical-experimental study on electron scattering by propane (C{sub 3}H{sub 8}) in the low- and intermediate-energy ranges. Calculated elastic differential, integral, and momentum transfer as well as total (elastic + inelastic) and total absorption cross sections are reported for impact energies ranging from 2 to 500 eV. Also, experimental absolute elastic cross sections are reported in the 40- to 500-eV energy range. A complex optical potential is used to represent the electron-molecule interaction dynamics. A theoretical method based on the single-center-expansion close-coupling framework and corrected by the Pade approximant is used to solve the scattering equations. The experimental angular distributions of the scattered electrons are converted to absolute cross sections using the relative flow technique. The comparison of our calculated with our measured results, as well as with other experimental and theoretical data available in the literature, is encouraging.

Souza, G. L. C. de; Lee, M.-T.; Sanches, I. P.; Rawat, P.; Iga, I.; Santos, A. S. dos; Machado, L. E.; Sugohara, R. T.; Brescansin, L. M.; Homem, M. G. P.; Lucchese, R. R. [Departamento de Quimica, UFSCar, 13565-905 Sao Carlos, SP (Brazil); Departamento de Fisica, UFSCar, 13565-905 Sao Carlos, SP (Brazil); Instituto de Fisica 'Gleb Wataghin', UNICAMP, 13083-970 Campinas, SP (Brazil); Departamento de Fisica, UFSC, 88010-970 Florianopolis, SC (Brazil); Department of Chemistry, Texas A and M University, College Station, Texas 7784-3255 (United States)

2010-07-15T23:59:59.000Z

243

Ultraviolet stimulated electron source for use with low energy plasma instrument calibration  

SciTech Connect

We have developed and demonstrated a versatile, compact electron source that can produce a mono-energetic electron beam up to 50 mm in diameter from 0.1 to 30 keV with an energy spread of <10 eV. By illuminating a metal cathode plate with a single near ultraviolet light emitting diode, a spatially uniform electron beam with 15% variation over 1 cm{sup 2} can be generated. A uniform electric field in front of the cathode surface accelerates the electrons into a beam with an angular divergence of <1 Degree-Sign at 1 keV. The beam intensity can be controlled from 10 to 10{sup 9} electrons cm{sup -2} s{sup -1}.

Henderson, Kevin; Harper, Ron; Funsten, Herb; MacDonald, Elizabeth [Space Science and Applications, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

2012-07-15T23:59:59.000Z

244

Simulation studies for operating electron beam ion trap at very low energy for disentangling edge plasma spectra  

SciTech Connect

Electron beam ion traps (EBITs) are very useful tools for disentanglement studies of atomic processes in plasmas. In order to assist studies on edge plasma spectroscopic diagnostics, a very low energy EBIT, SH-PermEBIT, has been set up at the Shanghai EBIT lab. In this work, simulation studies for factors which hinder an EBIT to operate at very low electron energies were made based on the Tricomp (Field Precision) codes. Longitudinal, transversal, and total kinetic energy distributions were analyzed for all the electron trajectories. Influences from the electron current and electron energy on the energy depression caused by the space charge are discussed. The simulation results show that although the energy depression is most serious along the center of the electron beam, the electrons in the outer part of the beam are more likely to be lost when an EBIT is running at very low energy. Using the simulation results to guide us, we successfully managed to reach the minimum electron beam energy of 60 eV with a beam transmission above 57% for the SH-PermEBIT. Ar and W spectra were measured from the SH-PermEBIT at the apparent electron beam energies (read from the voltage difference between the electron gun cathode and the central drift tube) of 60 eV and 1200 eV, respectively. The spectra are shown in this paper.

Jin Xuelong; Fei Zejie; Xiao Jun; Lu Di; Hutton, Roger; Zou Yaming [Key Lab of Applied Ion Beam Physics, Ministry of Education, China and Shanghai EBIT laboratory, Modern Physics Institute, Fudan University, Shanghai (China)

2012-07-15T23:59:59.000Z

245

Auger, zero-energy photoelectron, coincidence spectroscopy (AZEPECO): Chemical-site-selective Auger electron spectroscopy  

SciTech Connect

The Auger electron spectrum associated with decay of a core-hole on the terminal nitrogen and that associated with the central nitrogen of nitrous oxide, N{sub 2}O, are obtained individually through the use of a coincidence technique. Specifically, each of the two Auger electron spectra is obtained by detection of Auger electrons in coincidence with near zero energy (threshold) photoelectrons at the respective ionization thresholds. These zero energy electrons serve to identify the core-ionization continuum associated with the different Auger electrons. The salient features of the experimental spectra are in good agreement with theoretical calculations. The low counting rate generally associated with coincidence experiments, especially in the gas phase, is not encountered because the low energy electrons are collected over a 4{pi} solid angle. Also, velocity discrimination is accomplished by a spatial filter rather than by time-of-flight to utilize the maximum duty cycle of the synchrotron source. These data are believed to be the first examples of chemical-site-selective molecular Auger spectra.

Lee, K.; Ji, D.; Hanson, D.M. [State Univ. of New York, Stony Brook, NY (United States). Dept. of Chemistry; Hulbert, S.L. [Brookhaven National Lab., Upton, NY (United States). National Synchrotron Light Source; Kuiper, P. [Brookhaven National Lab., Upton, NY (United States). Physics Dept.

1993-12-31T23:59:59.000Z

246

Energy of the quasi-free electron in argon, krypton and xenon Xianbo Shi a,b  

E-Print Network (OSTI)

Energy of the quasi-free electron in argon, krypton and xenon Xianbo Shi a,b , Luxi Li a,b , C. M ionization of the dopant, and (iii) the kinetic energy of the quasi-free electron. The polarization terms are determined by a standard statistical mechanical treatment. However, the kinetic energy of the quasi-free

Evans, Cherice M.

247

542 IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 31, NO. 4, AUGUST 2003 Time-Dependence of the Electron Energy Distribution  

E-Print Network (OSTI)

-Dependence of the Electron Energy Distribution Function in the Nitrogen Afterglow Vasco Guerra, Francisco M. Dias, Jorge, we present an investigation of the time- relaxation of the electron energy distribution function that an equilibrium between the vibrational distribution function of ground-state molecules N2( 16+ ) and low-energy

Guerra, Vasco

248

Double-plateau in the energy distribution of electrons scattered by ions-pairs in a strong laser field  

E-Print Network (OSTI)

Double-plateau in the energy distribution of electrons scattered by ions-pairs in a strong laser) The energy distribution of electrons scattered from single ions and from pairs of ions in a strong laser solution of the energy distribution for instantaneous Coulomb collisions in three dimensions

Kull, Hans-Jörg

249

A hybrid model for particle transport and electron energy distributions in positive column electrical discharges using equivalent species transport  

E-Print Network (OSTI)

A hybrid model for particle transport and electron energy distributions in positive column the fluid portion of the model. Transport coefficients, source functions, and energy distributions for all field has motivated a num- ber of investigations into its effect on the `electron energy distribution

Kushner, Mark

250

Work in progress - integration of hands-on-laboratory experience of power electronics and renewable energy applications  

Science Conference Proceedings (OSTI)

This work-in-progress presents the research and educational activities designed to create a synergy related to aspects of the power electronics laboratory experience using alternative energy, and dissemination of knowledge related to the impact of renewable ... Keywords: educational technology, laboratories, power electronics, solar energy, thermoelectric energy

Eduardo I. Ortiz-Rivera; Marcel J. Castro-Sitiriche

2009-10-01T23:59:59.000Z

251

Synergico: a new "Design for Energy Efficiency" Method enhancing the Design of more environmentally friendly Electr(on)ic Equipments  

E-Print Network (OSTI)

Synergico: a new "Design for Energy Efficiency" Method enhancing the Design of more environmentally efficient products and infrastructures. For the electr(on)ic industry, in-use energy consumption to the Design for Energy Efficiency of electr(on)ic equipments focusing on the use phase. This paper presents

Paris-Sud XI, Université de

252

Energy use of U.S. consumer electronics at the end of the 20th century  

SciTech Connect

The major consumer electronics in U.S. homes accounted for over 10 percent of U.S. residential electricity consumption, which is comparable to the electricity consumed by refrigerators or lighting. We attribute 3.6 percent to video products, 3.3 percent to home office equipment, and 1.8 percent to audio products. Televisions use more energy than any other single product category, but computer energy use now ranks second and is likely to continue growing. In all, consumer electronics consumed 110 THw in the U.S. in 1999, over 60 percent of which was consumed while the products were not in use.

Rosen, Karen; Meier, Alan

2000-08-31T23:59:59.000Z

253

Unfolding linac photon spectra and incident electron energies from experimental transmission data, with direct independent validation  

SciTech Connect

Purpose: In a recent computational study, an improved physics-based approach was proposed for unfolding linac photon spectra and incident electron energies from transmission data. In this approach, energy differentiation is improved by simultaneously using transmission data for multiple attenuators and detectors, and the unfolding robustness is improved by using a four-parameter functional form to describe the photon spectrum. The purpose of the current study is to validate this approach experimentally, and to demonstrate its application on a typical clinical linac. Methods: The validation makes use of the recent transmission measurements performed on the Vickers research linac of National Research Council Canada. For this linac, the photon spectra were previously measured using a NaI detector, and the incident electron parameters are independently known. The transmission data are for eight beams in the range 10-30 MV using thick Be, Al and Pb bremsstrahlung targets. To demonstrate the approach on a typical clinical linac, new measurements are performed on an Elekta Precise linac for 6, 10 and 25 MV beams. The different experimental setups are modeled using EGSnrc, with the newly added photonuclear attenuation included. Results: For the validation on the research linac, the 95% confidence bounds of the unfolded spectra fall within the noise of the NaI data. The unfolded spectra agree with the EGSnrc spectra (calculated using independently known electron parameters) with RMS energy fluence deviations of 4.5%. The accuracy of unfolding the incident electron energy is shown to be {approx}3%. A transmission cutoff of only 10% is suitable for accurate unfolding, provided that the other components of the proposed approach are implemented. For the demonstration on a clinical linac, the unfolded incident electron energies and their 68% confidence bounds for the 6, 10 and 25 MV beams are 6.1 {+-} 0.1, 9.3 {+-} 0.1, and 19.3 {+-} 0.2 MeV, respectively. The unfolded spectra for the clinical linac agree with the EGSnrc spectra (calculated using the unfolded electron energies) with RMS energy fluence deviations of 3.7%. The corresponding measured and EGSnrc-calculated transmission data agree within 1.5%, where the typical transmission measurement uncertainty on the clinical linac is 0.4% (not including the uncertainties on the incident electron parameters). Conclusions: The approach proposed in an earlier study for unfolding photon spectra and incident electron energies from transmission data is accurate and practical for clinical use.

Ali, E. S. M.; McEwen, M. R.; Rogers, D. W. O. [Carleton Laboratory for Radiotherapy Physics, Department of Physics, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6 (Canada); Ionizing Radiation Standards, Institute for National Measurement Standards, National Research Council, M-35 Montreal Road, Ottawa, Ontario K1A 0R5 (Canada); Carleton Laboratory for Radiotherapy Physics, Department of Physics, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6 (Canada)

2012-11-15T23:59:59.000Z

254

Some effects of parallel energy propagation on the structure of dissipative trapped electron modes  

SciTech Connect

The limitation of ballooning by parallel energy propagation is investigated for the dissipative trapped electron mode, wherein the local energy influx is proportional to the poloidally dependent trapped particle fraction. For small energetic asymmetries [mg less than 2.5 ($Omega$/sub i/a/c/sub s/) (a/R/ sup $sup 3$/$sub 4$/] the structure along the field line is predominantly a phase shift, dictated by the condition that the asymmetric energy input be compensated by parallel energy flow. For large asymmetry, mode number, and parallel arc length, the phase and amplitude variations necessitate an integral equation treatment. (auth)

Sauthoff, N. R.

1976-01-01T23:59:59.000Z

255

Parametric Channeling Radiation and its Application to the Measurement of Electron Beam Energy  

SciTech Connect

We have proposed a method for observing parametric channeling radiation (PCR) and of applying it to the measurement of electron beam energy. The PCR process occurs if the energy of the channeling radiation coincides with the energy of the parametric X-ray radiation (PXR). The PCR process can be regarded as the diffraction of 'virtual channeling radiation'. We developed a scheme for beam energy measurement and designed an experimental setup. We also estimated the beam parameters, and calculated the angular distributions of PXR and PCR. These considerations indicate that the observation of PCR is promising.

Takabayashi, Y. [SAGA Light Source, 8-7 Yayoigaoka, Tosu, Saga 841-0005 (Japan)

2010-06-23T23:59:59.000Z

256

Mark Caffarey, UMICORE, "Opportunities and Limits to Recycling...  

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

for Clean Energies SessionC4Caffarey.ppt More Documents & Publications Peter Dent, Electron Energy Corporation, Strategies for More Effective Critical Materials Use Daniel Beat...

257

Daniel Beat Mller, Norwegian University of Science and Technology...  

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

and Limits to Recycling of Critical Materials for Clean Energies Peter Dent, Electron Energy Corporation, Strategies for More Effective Critical Materials Use Steve...

258

EMPIRICAL DETERMINATION OF THE ENERGY LOSS RATE OF ACCELERATED ELECTRONS IN A WELL-OBSERVED SOLAR FLARE  

Science Conference Proceedings (OSTI)

We present electron images of an extended solar flare source, deduced from RHESSI hard X-ray imaging spectroscopy data. We apply the electron continuity equation to these maps in order to determine empirically the form of the energy loss rate for the bremsstrahlung-emitting electrons. We show that this form is consistent with an energy transport model involving Coulomb collisions in a target with a temperature of about 2 Multiplication-Sign 10{sup 7} K, with a continuous injection of fresh deka-keV electrons at a rate of approximately 10{sup -2} electrons s{sup -1} per ambient electron.

Torre, Gabriele; Pinamonti, Nicola; Guo, Jingnan; Piana, Michele [Dipartimento di Matematica, Universita di Genova, Genova, via Dodecaneso 35, 16146 Genova (Italy); Emslie, A. Gordon [Department of Physics and Astronomy, Western Kentucky University, Bowling Green, KY 42101 (United States); Massone, Anna Maria, E-mail: torre@dima.unige.it, E-mail: pinamont@dima.unige.it, E-mail: guo@pitagora.dima.unige.it, E-mail: piana@dima.unige.it, E-mail: emslieg@wku.edu, E-mail: annamaria.massone@cnr.it [CNR-SPIN, Via Dodecaneso 33, I-16146 Genova (Italy)

2012-06-01T23:59:59.000Z

259

EPA ENERGY STAR: Tackling Growth in Home Electronics and Small Appliances  

SciTech Connect

Over a decade ago, the electricity consumption associated with home electronics and other small appliances emerged onto the global energy policy landscape as one of the fastest growing residential end uses with the opportunity to deliver significant energy savings. As our knowledge of this end use matures, it is essential to step back and evaluate the degree to which energy efficiency programs have successfully realized energy savings and where savings opportunities have been missed.For the past fifteen years, we have quantified energy, utility bill, and carbon savings for US EPA?s ENERGY STAR voluntary product labeling program. In this paper, we present a unique look into the US residential program savings claimed to date for EPA?s ENERGY STAR office equipment, consumer electronics, and other small household appliances as well as EPA?s projected program savings over the next five years. We present a top-level discussion identifying program areas where EPA?s ENERGY STAR efforts have succeeded and program areas where ENERGY STAR efforts did not successfully address underlying market factors, technology issues and/or consumer behavior. We end by presenting the magnitude of ?overlooked? savings.

Sanchez, Marla Christine; Brown, Richard; Homan, Gregory

2008-11-17T23:59:59.000Z

260

A Moment-Preserving Single-Event Monte Carlo Model of Electron and Positron Energy-Loss Straggling.  

E-Print Network (OSTI)

??Analog simulation of energy straggling of electrons and positrons is computationally impractical because of long-range Coulomb forces resulting in highly peaked cross sections about small (more)

Gonzales, Matthew

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Universality of electron distributions in high-energy air showers - description of Cherenkov light production  

E-Print Network (OSTI)

The shower simulation code CORSIKA has been used to investigate the electron energy and angular distributions in high-energy showers. Based on the universality of both distributions, we develop an analytical description of Cherenkov light emission in extensive air showers, which provides the total number and angular distribution of photons. The parameterisation can be used e.g. to calculate the contribution of direct and scattered Cherenkov light to shower profiles measured with the air fluorescence technique.

F. Nerling; J. Blmer; R. Engel; M. Risse

2005-06-29T23:59:59.000Z

262

Low energy electron and positron diffraction from surfaces. What you learn. How they differ  

Science Conference Proceedings (OSTI)

An overview of similarities and differences between low-energy (30 Ev to 250 Ev) electron and positron diffraction as probes of material surfaces is given. LEPD may offer greater surface sensitivity, and also better spatial resolution for polyatomic materials. (AIP)

Lessor, D.L. (Pacific Northwest Laboratory, Richland, Washington 99352 (United States)); Canter, K.F. (Brandeis University, Waltham, Massachusetts 02254 (United States)); Duke, C.B. (Xerox Webster Research Center, Webster, New York 14580 (United States))

1994-06-15T23:59:59.000Z

263

Electronic energy transfer between state selected metastable argon atoms and ground state krypton atoms  

E-Print Network (OSTI)

1007 Electronic energy transfer between state selected metastable argon atoms and ground state that the relative populations of the N2 (C, 3nu) product vibrational and rotational substates were dependent,0) atoms to ground state Kr atoms, which also shows large differences between the two metastable Ar states

Paris-Sud XI, Université de

264

Magnetic-field shielding of satellites from high-energy-electron environments  

Science Conference Proceedings (OSTI)

Magnet configurations are found that limit the 6-MeV electrons threatening satellite electronics to <1% of the incident flux. Successful configurations of permanent magnets and electromagnets require magnetic energies of {approximately}8 to 12 kJ to protect each liter of electronics volume. The fundamental strength of materials leads to a required minimum mass of {approximately}48 to 64 kg/liter to support the magnetic pressure. With the electronics requiring {approximately}5 liters, several hundred kilograms are needed for this support. Except for protecting small apertures, magnetic shielding provides little, if any, advantage over that obtained by coating with an equivalent mass using traditional methods. 7 refs., 9 figs., 1 tab.

Vittitoe, C.N.

1990-05-01T23:59:59.000Z

265

Coulomb Distortion Effects for (e,e'p) Reactions at High Electron Energy  

E-Print Network (OSTI)

We report a significant improvement of an approximate method of including electron Coulomb distortion in electron induced reactions at momentum transfers greater than the inverse of the size of the target nucleus. In particular, we have found a new parametrization for the elastic electron scattering phase shifts that works well at all electron energies greater than 300 $MeV$. As an illustration, we apply the improved approximation to the $(e,e'p)$ reaction from medium and heavy nuclei. We use a relativistic ``single particle'' model for $(e,e'p)$ as as applied to $^{208}Pb(e,e'p)$ and to recently measured data at CEBAF on $^{16}O(e,e'p)$ to investigate Coulomb distortion effects while examining the physics of the reaction.

K. S. Kim; L. E. Wright

1999-07-09T23:59:59.000Z

266

Electronic  

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

contribution contribution to friction on GaAs: An atomic force microscope study Yabing Qi, 1,2 J. Y. Park, 2 B. L. M. Hendriksen, 2 D. F. Ogletree, 2 and M. Salmeron 2,3 1 Applied Science and Technology Graduate Group, University of California, Berkeley, California 94720, USA 2 Materials Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, USA 3 Department of Materials Sciences and Engineering, University of California, Berkeley, California 94720, USA ͑Received 23 January 2008; revised manuscript received 11 April 2008; published 7 May 2008͒ The electronic contribution to friction at semiconductor surfaces was investigated by using a Pt-coated tip with 50 nm radius in an atomic force microscope sliding against an n-type GaAs͑100͒ substrate. The GaAs surface was covered by an approximately 1 nm thick oxide layer. Charge accumulation

267

Using Wireless Power Meters to Measure Energy Use of Miscellaneous and Electronic Devices in Buildings  

Science Conference Proceedings (OSTI)

Miscellaneous and electronic devices consume about one-third of the primary energy used in U.S. buildings, and their energy use is increasing faster than other end-uses. Despite the success of policies, such as Energy Star, that promote more efficient miscellaneous and electronic products, much remains to be done to address the energy use of these devices if we are to achieve our energy and carbon reduction goals. Developing efficiency strategies for these products depends on better data about their actual usage, but very few studies have collected field data on the long-term energy used by a large sample of devices due to the difficulty and expense of collecting device-level energy data. This paper describes the development of an improved method for collecting device-level energy and power data using small, relatively inexpensive wireless power meters. These meters form a mesh network based on Internet standard protocols and can form networks of hundreds of metering points in a single building. Because the meters are relatively inexpensive and do not require manual data downloading, they can be left in the field for months or years to collect long time-series energy use data. In addition to the metering technology, we also describe a field protocol used to collect comprehensive, robust data on the miscellaneous and electronic devices in a building. The paper presents sample results from several case study buildings, in which all the plug-in devices for several homes were metered, and a representative sample of several hundred plug-in devices in a commercial office building were metered for several months.

UC Berkeley, Berkeley, CA USA; Brown, Richard; Lanzisera, Steven; Cheung, Hoi Ying (Iris); Lai, Judy; Jiang, Xiaofan; Dawson-Haggerty, Stephen; Taneja, Jay; Ortiz, Jorge; Culler, David

2011-05-24T23:59:59.000Z

268

Nonlinear Ultrafast Spectroscopy of Electron and Energy Transfer in Molecule Complexes  

DOE Green Energy (OSTI)

The proposed research program will focus on the development of a unified dynamical theoretical framework for calculating the optical response of molecular assemblies and applying it towards studying the interplay of energy and charge transfer in artificial chromophore-aggregate complexes. Applications will be made to poly (p phenylene vinylene), (PPV) oligomers, several families of stilbenoid aggregates with stacking through a cyclophane group, coupled porphyrin arrays, and energy funneling in phenylacetylene dendrimers. The approach is based on formulating the problem using the density- matrix and developing Liouville-space techniques which provide physical insight and are particularly suitable for computing both coherent and incoherent transport. A physical picture based on collective electronic normal modes which represent the dynamics of the optically-driven reduced single electron density matrix will be established. Femtosecond signals and optical properties will be directly related to the motions of electron-hole pairs in real space, completely avoiding the calculation of many-electron excited-state wavefunctions, thus, considerably reducing computational effort. Vibrational and solvent effects will be incorporated. Guidelines for the synthesis of new donor/bridge/acceptor molecules with desired properties such as carrier transport, optical response time scales and fluorescence quantum yields will be developed. The analogy with Thz emission spectroscopy which probes charge carrier dynamic is in semiconductor superlattices will be explored. A systematic procedure for identifying the electronic coherence sizes which control the transport and optical properties will be developed. Localization of electronic transition density matrices of large molecules will be used to break the description of their optical response into coupled chromophores. The proposal is divided into four parts: (i) Collective-Oscillator Representation of Electronic Excitations in Molecular Assemblies; (ii) Nonlinear Optical Spectroscopy of Coupled Chromophores; (iii) Long-Range Electron Transfer and Transport in Solvents with Complex Spectral Densities; (iv) Probing Exciton-Migration by Coherent Femtosecond Spectroscopies.

Mukamel, Shaul

2006-02-09T23:59:59.000Z

269

Science Requirements and Conceptual Design for a Polarized Medium Energy Electron-Ion Collider at Jlab  

Science Conference Proceedings (OSTI)

Researchers have envisioned an electron-ion collider with ion species up to heavy ions, high polarization of electrons and light ions, and a well-matched center-of-mass energy range as an ideal gluon microscope to explore new frontiers of nuclear science. In its most recent Long Range Plan, the Nuclear Science Advisory Committee (NSAC) of the US Department of Energy and the National Science Foundation endorsed such a collider in the form of a 'half-recommendation.' As a response to this science need, Jefferson Lab and its user community have been engaged in feasibility studies of a medium energy polarized electron-ion collider (MEIC), cost-effectively utilizing Jefferson Lab's already existing Continuous Electron Beam Accelerator Facility (CEBAF). In close collaboration, this community of nuclear physicists and accelerator scientists has rigorously explored the science case and design concept for this envisioned grand instrument of science. An electron-ion collider embodies the vision of reaching the next frontier in Quantum Chromodynamics - understanding the behavior of hadrons as complex bound states of quarks and gluons. Whereas the 12 GeV Upgrade of CEBAF will map the valence-quark components of the nucleon and nuclear wave functions in detail, an electron-ion collider will determine the largely unknown role sea quarks play and for the first time study the glue that binds all atomic nuclei. The MEIC will allow nuclear scientists to map the spin and spatial structure of quarks and gluons in nucleons, to discover the collective effects of gluons in nuclei, and to understand the emergence of hadrons from quarks and gluons. The proposed electron-ion collider at Jefferson Lab will collide a highly polarized electron beam originating from the CEBAF recirculating superconducting radiofrequency (SRF) linear accelerator (linac) with highly polarized light-ion beams or unpolarized light- to heavy-ion beams from a new ion accelerator and storage complex. Since the very beginning, the design studies at Jefferson Lab have focused on achieving high collider performance, particularly ultrahigh luminosities up to 10{sup 34} cm{sup -2}s{sup -1} per detector with large acceptance, while maintaining high polarization for both the electron and light-ion beams. These are the two key performance requirements of a future electron-ion collider facility as articulated by the NSAC Long Range Plan. In MEIC, a new ion complex is designed specifically to deliver ion beams that match the high bunch repetition and highly polarized electron beam from CEBAF. During the last two years, both development of the science case and optimization of the machine design point toward a medium-energy electron-ion collider as the topmost goal for Jefferson Lab. The MEIC, with relatively compact collider rings, can deliver a luminosity above 10{sup 34} cm{sup -2}s{sup -1} at a center-of-mass energy up to 65 GeV. It offers an electron energy up to 11 GeV, a proton energy up to 100 GeV, and corresponding energies per nucleon for heavy ions with the same magnetic rigidity. This design choice balances the scope of the science program, collider capabilities, accelerator technology innovation, and total project cost. An energy upgrade could be implemented in the future by adding two large collider rings housed in another large tunnel to push the center-of-mass energy up to or exceeding 140 GeV. After careful consideration of an alternative electron energy recovery linac on ion storage ring approach, a ring-ring collider scenario at high bunch repetition frequency was found to offer fully competitive performance while eliminating the uncertainties of challenging R&D on ampere-class polarized electron sources and many-pass energy-recovery linacs (ERLs). The essential new elements of an MEIC facility at Jefferson Lab are an electron storage ring and an entirely new, modern ion acceleration and storage complex. For the high-current electron collider ring, the upgraded 12 GeV CEBAF SRF linac will serve as a full-energy injector, and, if needed, provide top

Abeyratne, S; Ahmed, S; Barber, D; Bisognano, J; Bogacz, A; Castilla, A; Chevtsov, P; Corneliussen, S; Deconinck, W; Degtiarenko, P; Delayen, J; Derbenev, Ya; DeSilva, S; Douglas, D; Dudnikov, V; Ent, R; Erdelyi, B; Evtushenko, P; Fujii, Yu; Filatov, Yury; Gaskell, D; Geng, R; Guzey, V; Horn, T; Hutton, A; Hyde, C; Johnson, R; Kim, Y; Klein, F; Kondratenko, A; Kondratenko, M; Krafft, G; Li, R; Lin, F; Manikonda, S; Marhauser, F; McKeown, R; Morozov, V; Dadel-Turonski, P; Nissen, E; Ostroumov, P; Pivi, M; Pilat, F; Poelker, M; Prokudin, A; Rimmer, R; Satogata, T; Sayed, H; Spata, M; Sullivan, M; Tennant, C; Terzic, B; Tiefenback, M; Wang, M; Wang, S; Weiss, C; Yunn, B

2012-08-01T23:59:59.000Z

270

Ultra high-gradient energy loss by a pulsed electron beam in a plasma  

SciTech Connect

The plasma wake-field mechanism can be used to couple energy at a high rate from a bunched electron beam into a plasma wave. We will present results from the Fermilab A0 facility where a beam with an initial energy of 14 MeV passes through the plasma to emerge with a much broader energy spread, spanning from a low of 3 MeV to a high of over 20 MeV. Over the 8 cm length of the 10{sup 14} cm{sup -3} plasma, this implies a 140 MeV/m deceleration and 72 MeV/m acceleration gradient.

Nikolai Barov et al.

2001-12-19T23:59:59.000Z

271

Energy Boom andEnergy Boom and Groundwater BustGroundwater Bust  

E-Print Network (OSTI)

of energy, but are barely making a dent in fossil-fuel consumption. The scale of the challenge will only trends makes clear that even with aggressive action to reduce energy consumption and curb emissions Argentina Brazil Qatar Kuwait UnitedArabEmirates SaudiArabia Iran Algeria Egypt South Africa Hong Kong

Keller, Arturo A.

272

Reciprocal space mapping by spot profile analyzing low energy electron diffraction  

SciTech Connect

We present an experimental approach for the recording of two-dimensional reciprocal space maps using spot profile analyzing low energy electron diffraction (SPA-LEED). A specialized alignment procedure eliminates the shifting of LEED patterns on the screen which is commonly observed upon variation of the electron energy. After the alignment, a set of one-dimensional sections through the diffraction pattern is recorded at different energies. A freely available software tool is used to assemble the sections into a reciprocal space map. The necessary modifications of the Burr-Brown computer interface of the two Leybold and Omicron type SPA-LEED instruments are discussed and step-by-step instructions are given to adapt the SPA 4.1d software to the changed hardware. Au induced faceting of 4 deg. vicinal Si(001) is used as an example to demonstrate the technique.

Meyer zu Heringdorf, Frank-J.; Horn-von Hoegen, Michael [Institut fuer Experimentelle Physik, Universitaet Duisburg-Essen, 45117 Essen (Germany)

2005-08-15T23:59:59.000Z

273

The influence of external fields on the energy of two interacting electrons in a quantum dot  

SciTech Connect

In this paper, the effects of both an external electric field and an external magnetic field on the energy of two interacting electrons in a two-dimensional parabolic quantum dot are investigated for various quantum states (n,|m|) in the framework of the asymptotic iteration method. It is seen that the energy eigenvalues increase monotonically with increasing electric and magnetic field strengths in the weak- and strong-field regimes. However, the behavior is slightly different in the two regimes. Whereas the energy values increase linearly in the low-electric-field regime, they increase much more than linearly in the strong-field regime. This paper demonstrates that it is possible to obtain the energy eigenvalues of two electrons in a two-dimensional parabolic quantum dot not only for cases with and without an electric field and with and without a magnetic field, but also for cases where magnetic and electric fields (either strong or weak) are present simultaneously. - Highlights: Black-Right-Pointing-Pointer The energy eigenvalues of two electrons in a 2D quantum dot in external electric and magnetic fields are discussed. Black-Right-Pointing-Pointer The effects of the fields on the energies are obtained for strong and weak fields. Black-Right-Pointing-Pointer The energies increase monotonically with increasing field. Black-Right-Pointing-Pointer The increase in the energies in weak fields has a different behavior from that in strong fields. Black-Right-Pointing-Pointer The method used here is very efficient for discovering the effects of external fields on different states.

Soylu, A., E-mail: asimsoylu@gmail.com

2012-12-15T23:59:59.000Z

274

Absolute calibration of image plates for electrons at energy between 100 keV and 4 MeV  

SciTech Connect

We measured the absolute response of image plate (Fuji BAS SR2040) for electrons at energies between 100 keV and 4 MeV using an electron spectrometer. The electron source was produced from a short pulse laser irradiated on solid density targets. This paper presents the calibration results of image plate photon stimulated luminescence per electron at this energy range. The Monte Carlo radiation transport code MCNPX results are also presented for three representative incident angles onto the image plates and corresponding electron energy depositions at these angles. These provide a complete set of tools that allows extraction of our absolute calibration to other spectrometer setting at this electron energy range.

Chen Hui; Back, Norman L.; Eder, David C.; MacPhee, Andrew G.; Ping Yuan; Song, Peter M.; Throop, Alan [Lawrence Livermore National Laboratory, Livermore, California 94550-9234 (United States); Bartal, Teresa; Beg, F. N. [University of California, San Diego, La Jolla, California 92093 (United States); Link, Anthony J.; Van Woerkom, Linn [Ohio State University, Columbus, Ohio 43210 (United States)

2008-03-15T23:59:59.000Z

275

Absolute Calibration of Image Plate for electrons at energy between 100 keV and 4 MeV  

SciTech Connect

The authors measured the absolute response of image plate (Fuji BAS SR2040) for electrons at energies between 100 keV to 4 MeV using an electron spectrometer. The electron source was produced from a short pulse laser irradiated on the solid density targets. This paper presents the calibration results of image plate Photon Stimulated Luminescence PSL per electrons at this energy range. The Monte Carlo radiation transport code MCNPX results are also presented for three representative incident angles onto the image plates and corresponding electron energies depositions at these angles. These provide a complete set of tools that allows extraction of the absolute calibration to other spectrometer setting at this electron energy range.

Chen, H; Back, N L; Eder, D C; Ping, Y; Song, P M; Throop, A

2007-12-10T23:59:59.000Z

276

Energy Spectrum of the Electrons Accelerated by a Reconnection Electric Field: Exponential or Power Law?  

E-Print Network (OSTI)

The direct current (DC) electric field near the reconnection region has been proposed as an effective mechanism to accelerate protons and electrons in solar flares. A power-law energy spectrum was generally claimed in the simulations of electron acceleration by the reconnection electric field. However in most of the literature, the electric and magnetic fields were chosen independently. In this paper, we perform test-particle simulations of electron acceleration in a reconnecting magnetic field, where both the electric and magnetic fields are adopted from numerical simulations of the MHD equations. It is found that the accelerated electrons present a truncated power-law energy spectrum with an exponential tail at high energies, which is analogous to the case of diffusive shock acceleration. The influences of reconnection parameters on the spectral feature are also investigated, such as the longitudinal and transverse components of the magnetic field and the size of the current sheet. It is suggested that the DC electric field alone might not be able to reproduce the observed single or double power-law distributions.

W. J. Liu; P. F. Chen; M. D. Ding; C. Fang

2008-09-07T23:59:59.000Z

277

Pseudo Slice Energy Spread in Dynamics of Electron Beams Moving through Magnetic Bends  

E-Print Network (OSTI)

In the previous canonical formulation of beam dynamics for an electron bunch moving ultrarelativistically through magnetic bending systems, we have shown that the transverse dynamics equation for a particle in the bunch has a driving term which behaves as the centrifugal force caused by the particle's initial potential energy due to collective particle interactions within the bunch. As a result, the initial potential energy at the entrance of a bending system, which we call pseudo (kinetic) energy, is indistinguishable from the usual kinetic energy offset from the design energy in its perturbation to particle optics through dispersion and momentum compaction. In this paper, in identifying this centrifugal force on particles as the remnant of the CSR cancellation effect in transverse particle dynamics, we show how the dynamics equation in terms of the canonical momentum for beam motion on a curved orbit is related to the Panofsky-Wenzel theorem for wakefields for beam motion on a straight path. It is shown tha...

Li, Rui

2014-01-01T23:59:59.000Z

278

Analytical solutions for energy spectra of electrons accelerated by nonrelativistic shock-waves in shell type supernova remnants  

E-Print Network (OSTI)

%context {Recent observations of hard X-rays and very high energy gamma-rays from a number of young shell type supernova remnants indicate the importance of detailed quantitative studies of energy spectra of relativistic electrons formed via diffusive shock acceleration accompanied by intense nonthermal emission through synchrotron radiation and inverse Compton scattering.} %aim {The aim of this work was derivation of exact asymptotic solutions of the kinetic equation which describes the energy distribution of shock-accelerated electrons for an arbitrary energy-dependence of the diffusion coefficient.} %method {The asymptotic solutions at low and very high energy domains coupled with numerical calculations in the intermediate energy range allow analytical presentations of energy spectra of electrons for the entire energy region.} %results {Under the assumption that the energy losses of electrons are dominated by synchrotron cooling, we derived the exact asymptotic spectra of electrons without any restriction on the diffusion coefficient. We also obtained simple analytical approximations which describe, with accuracy better than ten percent, the energy spectra of nonthermal emission of shock-accelerated electrons due to the synchrotron radiation and inverse Compton scattering.} %conclusions {The results can be applied for interpretation of X-ray and gamma-ray observations of shell type supernova remnants, as well as other nonthermal high energy source populations like microquasars and large scale synchrotron jets of active galactic nuclei.

V. N. Zirakashvili; F. Aharonian

2006-12-25T23:59:59.000Z

279

High-Precision Cross Sections for Low-Energy Electron-Atom Collisions  

Science Conference Proceedings (OSTI)

We describe a recently developed B-spline R-matrix method for electron and photon collisions with atoms and ions. Using non-orthogonal sets of orbitals to construct the target description and to represent the scattering functions, this implementation of the close-coupling approach allows us to employ highly correlated target wavefunctions with relatively small configuration expansions. Example results from recent applications of the method for accurate calculations of low-energy electron scattering from He, Zn, Ne, Ar, Xe, and Fe+ are presented.

Bartschat, Klaus; Zatsarinny, Oleg [Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311 (United States)

2007-04-06T23:59:59.000Z

280

Electron Quasielastic Scattering at High Energy from $^{56}$Fe, What Suppression?  

E-Print Network (OSTI)

Quasielastic electron scattering $(e,e')$ from $^{56}$Fe is calculated at large electron energies (2-4 GeV) and large three momentum transfer (0.5-1.5 GeV/c). We use a relativistic mean-field single particle model for the bound and continuum nucleon wavefunctions based on the $\\sigma-\\omega$ model and we include the effects of electron Coulomb distortion in the calculation. The calculations are compared to high energy data from SLAC and more recent data from Jefferson Laboratory, particularly for kinematics where the energy transfer is less than 500 to 600 MeV and the quasielastic process is expected to dominate the cross section. The effects of the predicted weakening of the strong scalar and vector potentials of the $\\sigma-\\omega$ model at high energy are investigated. Possible evidence for `longitudinal suppression' or modifications of nucleon form factors in the medium is considered, but neither is necessary to explain the quasielastic data for four momentum transfers less than 1 (GeV/c)$^2$.

K. S. Kim; L. E. Wright

2002-08-21T23:59:59.000Z

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281

Magnetic Energy Storage System: Superconducting Magnet Energy Storage System with Direct Power Electronics Interface  

Science Conference Proceedings (OSTI)

GRIDS Project: ABB is developing an advanced energy storage system using superconducting magnets that could store significantly more energy than todays best magnetic storage technologies at a fraction of the cost. This system could provide enough storage capacity to encourage more widespread use of renewable power like wind and solar. Superconducting magnetic energy storage systems have been in development for almost 3 decades; however, past devices were designed to supply power only for short durationsgenerally less than a few minutes. ABBs system would deliver the stored energy at very low cost, making it ideal for eventual use in the electricity grid as a costeffective competitor to batteries and other energy storage technologies. The device could potentially cost even less, on a per kilowatt basis, than traditional lead-acid batteries.

None

2010-10-01T23:59:59.000Z

282

HOT ELECTRON ENERGY DISTRIBUTIONS FROM ULTRA-INTENSE LASER SOLID INTERACTIONS  

Science Conference Proceedings (OSTI)

Measurements of electron energy distributions from ultra-intense (>10{sup 19} W/cm{sup 2}) laser-solid interactions using an electron spectrometer are presented. These measurements were performed on the Vulcan petawatt laser at Rutherford Appleton Laboratory and the Callisto laser at Lawrence Livermore National Laboratory. The effective hot electron temperatures (T{sub hot}) have been measured for laser intensities (I{lambda}{sup 2}) from 10{sup 18} W/cm{sup 2} {micro}m{sup 2} to 10{sup 21} W/cm{sup 2} {micro}m{sup 2} for the first time, and T{sub hot} is found to increase as (I{lambda}{sup 2}){sup 0.34} {+-} 0.4. This scaling agrees well with the empirical scaling published by Beg et al. (1997), and is explained by a simple physical model that gives good agreement with experimental results and particle-in-cell simulations.

Chen, H; Wilks, S C; Kruer, W; Patel, P; Shepherd, R

2008-10-08T23:59:59.000Z

283

Anomalous electron heating and energy balance in an ion beam generated plasma  

DOE Green Energy (OSTI)

The plasma described in this report is generated by a 15 to 34 kV ion beam, consisting primarily of protons, passing through an H/sub 2/ gas cell neutralizer. Plasma ions (or ion-electron pairs) are produced by electron capture from (or ionization of) gas molecules by beam ions and atoms. An explanation is provided for the observed anomalous behavior of the electron temperature (T/sub e/): a step-lite, nearly two-fold jump in T/sub e/ as the beam current approaches that which minimizes beam angular divergence; insensitivity of T/sub e/ to gas pressure; and the linear relation of T/sub e/ to beam energy.

Guethlein, G.

1987-04-01T23:59:59.000Z

284

High Energy Electron Signals from Dark Matter Annihilation in the Sun  

Science Conference Proceedings (OSTI)

In this paper we discuss two mechanisms by which high energy electrons resulting from dark matter annihilations in or near the Sun can arrive at the Earth. Specifically, electrons can escape the sun if DM annihilates into long-lived states, or if dark matter scatters inelastically, which would leave a halo of dark matter outside of the sun. Such a localized source of electrons may affect the spectra observed by experiments with narrower fields of view oriented towards the sun, such as ATIC, differently from those with larger fields of view such as Fermi. We suggest a simple test of these possibilities with existing Fermi data that is more sensitive than limits from final state radiation. If observed, such a signal will constitute an unequivocal signature of dark matter.

Schuster, Philip; /SLAC; Toro, Natalia; /Stanford U., ITP; Weiner, Neal; Yavin, Itay; /New York U., CCPP

2012-04-09T23:59:59.000Z

285

Low-energy electron scattering from Ca atoms and photodetachment of Ca{sup -}  

SciTech Connect

The B-spline R-matrix method is used to investigate electron scattering from neutral calcium and photodetachment of Ca{sup -} in the low-energy range from threshold to 4 eV. The multiconfiguration Hartree-Fock method with nonorthogonal orbital sets is employed for an accurate representation of the target wave functions. The close-coupling expansion includes 39 bound states of neutral calcium, covering all states from the ground state to 4s8s {sup 1}S. The present calculations yield good agreement with the few available experimental data for both elastic electron scattering and photodetachment of Ca{sup -}. The prominent resonance structure in the low-energy region is analyzed and discussed.

Zatsarinny, Oleg; Bartschat, Klaus; Gedeon, Sergey; Gedeon, Viktor; Lazur, Vladimir [Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311 (United States); Department of Theoretical Physics, Uzhgorod State University, Uzhgorod 88000 (Ukraine)

2006-11-15T23:59:59.000Z

286

Effect of a phase transition on the electron energy spectrum in Ag{sub 2}S  

Science Conference Proceedings (OSTI)

Temperature dependences of electrical conductivity {sigma}, Hall coefficient R, and thermopower {alpha}{sub 0} in Ag{sub 2}S are reported. It is established that at T {approx} 435 {+-} 5 K, all kinetic parameters vary drastically, which is associated with a change in parameters of the conduction band. It is shown that the dispersion law of electron energy in {beta}-Ag{sub 2}S corresponds to the Kane model.

Aliev, F. F., E-mail: farzali@physics.ab.az; Jafarov, M. B.; Tairov, B. A.; Pashaev, G. P.; Saddinova, A. A.; Kuliev, A. A. [Azerbaijan National Academy of Sciences, Institute of Physics (Azerbaijan)

2008-10-15T23:59:59.000Z

287

Phase II report on energy efficient electronic ballasts for a two-40 watt fluorescent lamp system  

SciTech Connect

The Department of Energy (DOE) has established a project aimed at accelerating the commercialization of electronic ballasts. During the Phase I portion of the project a small quantity of ballasts and other hardware were delivered for independent testing. Results verified the claims for energy savings and other unique and advantageous features of the electronic ballast. Phase II, a large scale field demonstration, is reported. The demonstration is being conducted by LBL and the Pacific Gas and Electric Company in the PG and E headquarters building in downtown San Fracisco. The test demonstration hardware is being procured. Included are two models of energy saving ballasts; two dimmer systems that show the potential for additional power savings; and, two models of Automatic Emergency Light Systems. Installation of ballasts and the beginning of actual test operations were originally scheduled for February 1978. However, slippages in hardware deliveries have caused a three-month delay. Testing at PG and E is now scheduled to begin in June 1978. Even though broad scale results from the Phase II demonstration at PG and E are not yet available, performance and versatility advantages of the electronic ballast have been demonstrated. They offer a clear incentive to the industry for development and production of reliable hardware that will be competitively saleable on a long term cost-of-lighting basis.

1978-07-01T23:59:59.000Z

288

Green Manufacturing IV  

Science Conference Proceedings (OSTI)

Oct 10, 2012 ... Session Chair: Peter Dent, Electron Energy Corporation; Junichi .... Aldabsheh1; Hubert Rahier3; Jan Wastiels3; 1University of Jordan; 23.

289

Steve Duclos, Chief Scientist, GE Global Research, Research Priorities...  

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

for Critical Material Substitutes from a European Corporate Perspective Peter Dent, Electron Energy Corporation, Strategies for More Effective Critical Materials Use Mark...

290

Power Electronics Design Implications of Novel Photovoltaic Collector Geometries and Their Application for Increased Energy Harvest  

E-Print Network (OSTI)

The declining cost of photovoltaic (PV) modules has enabled the vision of ubiquitous photovoltaic (PV) power to become feasible. Emerging PV technologies are facilitating the creation of intentionally non-flat PV modules, which create new applications for this sustainable energy generation currently not possible with the traditional rigid, flat silicon-glass modules. However, since the photovoltaic cells are no longer coplanar, there are significant new requirements for the power electronics necessary to convert the native form of electricity into a usable form and ensure maximum energy harvest. Non-uniform insolation from cell-to-cell gives rise to non-uniform current density in the PV material, which limits the ability to create series-connected cells without bypass diode or other ways to shunt current, which is well known in the maximum power tracking literature. This thesis presents a modeling approach to determine and quantify the variations in generation of energy due to intentionally non-flat PV geometries. This will enable the power electronics circuitry to be optimized to harvest maximum energy from PV pixel elements clusters of PV cells with similar operating characteristics. This thesis systematically compares different geometries with identical two-dimensional projection "footprints" for energy harvest throughout the day. The results show that for the same footprint, a semi-cylindrical surface harvests more energy over a typical day than a flat plate. The modeling approach is then extended to demonstrate that by using non flat geometries for PV panel, the availability of a remotely located stand-alone power system can be increased when compared to a flat panel of same footprint. These results have broad application to a variety of energy scavenging scenarios in which either total energy harvested needs to be maximized or unusual geometries for the PV active surfaces are required, including building-integrated PV. This thesis develops the analysis of the potential energy harvest gain for advanced non-planar PV collectors as a necessary first step towards the design of the power electronics circuits and control algorithms to take advantage of the new opportunities of conformal and non-flat PV collectors.

Karavadi, Amulya

2011-08-01T23:59:59.000Z

291

Temporal evolution of the electron energy distribution function in oxygen and chlorine gases under dc and ac fields  

E-Print Network (OSTI)

by an effective dc field which presumably trans- fers the same energy to the electrons. Although the effec- tive frequency of the electric field. The effective dc field is defined as (14) In the present work the energy(eV) FIG. 1. Steady-stateelectron energy distribution function for 0, dc fields of E/N= 10, 80, 150

Economou, Demetre J.

292

Electron energy-loss spectroscopy of boron-doped layers in amorphous thin film silicon solar cells  

E-Print Network (OSTI)

Electron energy-loss spectroscopy of boron-doped layers in amorphous thin film silicon solar cells. de Bariloche, Argentina 3 ECN Solar Energy, High Tech Campus, Building 5, 5656 AE Eindhoven energy-loss spectroscopy (EELS) is used to study p-doped layers in n-i-p amorphous thin film Si solar

Dunin-Borkowski, Rafal E.

293

A study of fast electron energy transport in relativistically intense laser-plasma interactions with large density scalelengths  

SciTech Connect

A systematic experimental and computational investigation of the effects of three well characterized density scalelengths on fast electron energy transport in ultra-intense laser-solid interactions has been performed. Experimental evidence is presented which shows that, when the density scalelength is sufficiently large, the fast electron beam entering the solid-density plasma is best described by two distinct populations: those accelerated within the coronal plasma (the fast electron pre-beam) and those accelerated near or at the critical density surface (the fast electron main-beam). The former has considerably lower divergence and higher temperature than that of the main-beam with a half-angle of {approx}20 Degree-Sign . It contains up to 30% of the total fast electron energy absorbed into the target. The number, kinetic energy, and total energy of the fast electrons in the pre-beam are increased by an increase in density scalelength. With larger density scalelengths, the fast electrons heat a smaller cross sectional area of the target, causing the thinnest targets to reach significantly higher rear surface temperatures. Modelling indicates that the enhanced fast electron pre-beam associated with the large density scalelength interaction generates a magnetic field within the target of sufficient magnitude to partially collimate the subsequent, more divergent, fast electron main-beam.

Scott, R. H. H.; Norreys, P. A. [Department of Physics, Blackett Laboratory, Imperial College London, Prince Consort Road, London, SW7 2AZ (United Kingdom); Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxford OX11 0QX (United Kingdom); Perez, F.; Baton, S. D. [LULI, Ecole Polytechnique, UMR 7605, CNRS/CEA/UPMC, Route de Saclay, 91128 Palaiseau (France); Santos, J. J.; Nicolai, Ph.; Hulin, S. [Univ. Bordeaux/CNRS/CEA, CELIA, UMR 5107, 33405 Talence (France); Ridgers, C. P. [Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom); Department of Physics, Blackett Laboratory, Imperial College London, Prince Consort Road, London, SW7 2AZ (United Kingdom); Davies, J. R. [GoLP, Instituto de Plasmas e Fusao Nuclear - Laboratorio Associado, Instituto Superior Tecnico, 1049-001 Lisboa (Portugal); Lancaster, K. L.; Trines, R. M. G. M. [Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxford OX11 0QX (United Kingdom); Bell, A. R.; Tzoufras, M. [Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU (United Kingdom); Central Laser Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, Oxford OX11 0QX (United Kingdom); Rose, S. J. [Department of Physics, Blackett Laboratory, Imperial College London, Prince Consort Road, London, SW7 2AZ (United Kingdom)

2012-05-15T23:59:59.000Z

294

Low-energy Electron collisions with O$_2$: Test of Molecular R-matrix without Diagonalization  

E-Print Network (OSTI)

Electron collisions with O$_2$ at scattering energies below 1 eV are studied in the fixed-nuclei approximation for a range of internuclear separations using the ab initio molecular R-matrix method. The $^2\\Pi_g$ scattering eigenphases and quantum defects are calculated. The parameters of the resonance and the energy of the bound negative ion are then extracted. Different models of the target that employ molecular orbitals calculated for the neutral target are compared with models based on anionic orbitals. A model using a basis of anionic molecular orbitals yields physically correct results in good agreement with experiment. An alternative method of calculation of the R-matrix is tested, where instead of performing a single complete diagonalization of the Hamiltonian matrix in the inner region, the system of linear equations is solved individually for every scattering energy. This approach is designed to handle problems where diagonalization of an extremely large Hamiltonian is numerically too demanding.

Tarana, Michal

2013-01-01T23:59:59.000Z

295

Neutron-induced electronic failures around a high-energy linear accelerator  

Science Conference Proceedings (OSTI)

Purpose: After a new in-vault CT-on-rails system repeatedly malfunctioned following use of a high-energy radiotherapy beam, we investigated the presence and impact of neutron radiation on this electronic system, as well as neutron shielding options. Methods: We first determined the CT scanner's failure rate as a function of the number of 18 MV monitor units (MUs) delivered. We then re-examined the failure rate with both 2.7-cm-thick and 7.6-cm-thick borated polyethylene (BPE) covering the linac head for neutron shielding. To further examine shielding options, as well as to explore which neutrons were relevant to the scanner failure, Monte Carlo simulations were used to calculate the neutron fluence and spectrum in the bore of the CT scanner. Simulations included BPE covering the CT scanner itself as well as covering the linac head. Results: We found that the CT scanner had a 57% chance of failure after the delivery of 200 MUs. While the addition of neutron shielding to the accelerator head reduced this risk of failure, the benefit was minimal and even 7.6 cm of BPE was still associated with a 29% chance of failure after the delivery of 200 MU. This shielding benefit was achieved regardless of whether the linac head or CT scanner was shielded. Additionally, it was determined that fast neutrons were primarily responsible for the electronic failures. Conclusions: As illustrated by the CT-on-rails system in the current study, physicists should be aware that electronic systems may be highly sensitive to neutron radiation. Medical physicists should therefore monitor electronic systems that have not been evaluated for potential neutron sensitivity. This is particularly relevant as electronics are increasingly common in the therapy vault and newer electronic systems may exhibit increased sensitivity.

Kry, Stephen F.; Johnson, Jennifer L.; White, R. Allen; Howell, Rebecca M.; Kudchadker, Rajat J.; Gillin, Michael T. [Department of Radiation Physics, M. D. Anderson Cancer Center, University of Texas, 1515 Holcombe Boulevard, Houston, Texas 77030 and Health Science Center Houston, Graduate School of Biomedical Sciences, University of Texas Health Science Center Houston, Houston, Texas 77030 (United States); Department of Radiation Physics, M. D. Anderson Cancer Center, University of Texas, 1515 Holcombe Boulevard, Houston, Texas 77030 (United States); Department of Biostatistics and Applied Mathematics, M. D. Anderson Cancer Center, University of Texas, 1515 Holcombe Boulevard, Houston, Texas 77030 (United States) and Health Science Center Houston, Graduate School of Biomedical Sciences, University of Texas, Houston, Texas 77030 (United States); Department of Radiation Physics, M. D. Anderson Cancer Center, University of Texas, 1515 Holcombe Boulevard, Houston, Texas 77030 (United States) and Health Science Center Houston, Graduate School of Biomedical Sciences, University of Texas, Houston, Texas 77030 (United States); Department of Radiation Physics, M. D. Anderson Cancer Center, University of Texas, 1515 Holcombe Boulevard, Houston, Texas 77030 (United States)

2011-01-15T23:59:59.000Z

296

Calculations on Electron Capture in Low Energy Ion-Molecule Collisions  

DOE Green Energy (OSTI)

Recent progress on the application of a quantal, molecular-orbital, close-coupling approach to the calculation of electron capture in collisions of multiply charged ions with molecules is discussed. Preliminary results for single electron capture by N{sup 2+} with H{sub 2} are presented. Electron capture by multiply charged ions colliding with H{sub 2} is an important process in laboratory and astrophysical plasmas. It provides a recombination mechanism for multiply charged ions in x-ray ionized astronomical environments which may have sparse electron and atomic hydrogen abundances. In the divertor region of a tokamak fusion device, charge exchange of impurity ions with H{sub 2} plays a role in the ionization balance and the production of radiative energy loss leading to cooling, X-ray and ultraviolet auroral emission from Jupiter is believed to be due to charge exchange of O and S ions with H{sub 2} in the Jovian atmosphere. Solar wind ions interacting with cometary molecules may have produced the x-rays observed from Comet Hyakutake. In order to model and understand the behavior of these environments, it is necessary to obtain total, electronic state-selective (ESS), and vibrational (or rotational) state-selective (VSS) capture cross sections for collision energies as low as 10 meV/amu to as high as 100 keV/amu in some instances. Fortunately, charge transfer with molecular targets has received considerable experimental attention. Numerous measurements have been made with flow tubes, ion traps, and ion beams. Flow tube and ion trap studies generally provide information on rate coefficients for temperatures between 800 K and 20,000 K. In this article, we report on the progress of our group in implementing a quantum-mechanical Molecular Orbital Close Coupling (MOCC) approach to the study of electron capture by multiply charged ions in collisions with molecules. We illustrate this with a preliminary investigation of Single Electron Capture (SEC) by N{sup 2+} with H{sub 2}.

Stancil, P.C. [Oak Ridge National Lab., TN (United States); Zygelman, B. [W.M. Keck Lab. for Computational Physics, Univ. of Nevada, Las Vegas, NV (United States); Kirby, K. [Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)

1997-12-31T23:59:59.000Z

297

High-energy electron observations by PPB-BETS flight in Antarctica  

E-Print Network (OSTI)

We have observed cosmic-ray electrons from 10 GeV to 800 GeV by a long duration balloon flight using Polar Patrol Balloon (PPB) in Antarctica. The observation was carried out for 13 days at an average altitude of 35 km in January 2004. The detector is an imaging calorimeter composed of scintillating-fiber belts and plastic scintillators inserted between lead plates with 9 radiation lengths. The performance of the detector has been confirmed by the CERN-SPS beam test and also investigated by Monte-Carlo simulations. New telemetry system using a commercial satellite of Iridium, power supply by solar batteries, and automatic level control using CPU have successfully been developed and operated during the flight. From the long duration balloon observations, we derived the energy spectrum of cosmic-ray electrons in the energy range from 100 GeV to 800 GeV. In addition, for the first time we derived the electron arrival directions above 100 GeV, which is consistent with the isotropic distribution.

S. Torii; T. Yamagami; T. Tamura; K. Yoshida; H. Kitamura; K. Anraku; J. Chang; M. Ejiri; I. Iijima; A. Kadokura; K. Kasahara; Y. Katayose; T. Kobayashi; Y. Komori; Y. Matsuzaka; K. Mizutani; H. Murakami; M. Namiki; J. Nishimura; S. Ohta; Y. Saito; M. Shibata; N. Tateyama; H. Yamagishi; T. Yamashita; T. Yuda

2008-09-04T23:59:59.000Z

298

Low energy electron induced damage to plasmid DNA pQE30  

SciTech Connect

Low energy electrons (LEEs) are produced in copious amounts by the primary radiation used in radiation therapy. The damage caused to the DNA by these secondary electrons in the energy range 5-22 eV has been studied to understand their possible role in radiation induced damage. Electrons are irradiated on dried films of plasmid DNA (pQE30) and analysed using agarose gel electrophoresis. Single strand breaks (SSBs) induced by LEE to supercoiled plasmid DNA show resonance structures at 7, 12, and 15 eV for low doses and 6, 10, and {approx}18 eV at saturation doses. The present measurements have an overall agreement with the literature that LEEs resonantly induce SSBs in DNA. Resonant peaks in the SSBs induced by LEEs at 7, 12, and 15 eV with the lowest employed dose in the current study are somewhat different from those reported earlier by two groups. The observed differences are perhaps related to the irradiation dose, conditions and the nature of DNA employed, which is further elaborated.

Kumar, S. V. K.; Pota, Tasneem; Peri, Dinakar; Dongre, Anushka D.; Rao, Basuthkar J. [Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400 005 (India)

2012-07-28T23:59:59.000Z

299

Performance of GAASP/GAAS Superlattice Photocathodes in High Energy Experiments using Polarized Electrons  

Science Conference Proceedings (OSTI)

The GaAsP/GaAs strained superlattice photocathode structure has proven to be a significant advance for polarized electron sources operating with high peak currents per microbunch and relatively low duty factor. This is the characteristic type of operation for SLAC and is also planned for the ILC. This superlattice structure was studied at SLAC [1], and an optimum variation was chosen for the final stage of E-158, a high-energy parity violating experiment at SLAC. Following E-158, the polarized source was maintained on standby with the cathode being re-cesiated about once a week while a thermionic gun, which is installed in parallel with the polarized gun, supplied the linac electron beams. However, in the summer of 2005, while the thermionic gun was disabled, the polarized electron source was again used to provide electron beams for the linac. The performance of the photocathode 24 months after its only activation is described and factors making this possible are discussed.

Brachmann, A.; Clendenin, J.E.; Maruyama, T.; Garwin, E.L.; Ioakemidi, K.; Prescott, C.Y.; Turner, J.L.; /SLAC; Prepost, R.; /Wisconsin U., Madison

2006-02-27T23:59:59.000Z

300

Accurate Cross-section Calculations for Low-Energy Electron-Atom Collisions  

Science Conference Proceedings (OSTI)

We describe a recently developed fully relativistic B-spline R-matrix method for atomic structure as well as calculations for electron and photon collision with atoms and ions. The method is based on the solution of the many-electron Fock-Dirac equation and allows to employ non-orthogonal sets of atomic orbitals. A B-spline basis is used to generate both the target description and the R-matrix basis functions in the inner region. Employing B-splines of different orders for the large and small components prevents the appearance of spurious states in the spectrum of the Dirac equation. Using term-dependent and thus nonorthogonal sets of one-electron functions enables us to generate accurate and flexible representations of the target states and the scattering function. Our method is based upon the Dirac-Coulomb Hamiltonian and thus may be employed for any complex atom or ion, without the use of phenomenological core potentials. Example results from recent applications of the method for accurate calculations of low-energy electron scattering from noble gases are presented. In most cases we obtained a substantial improvement over results obtained in previous Breit-Pauli R-matrix calculations.

Zatsarinny, Oleg; Bartschat, Klaus [Department of Physics and Astronomy, Drake University, Des Moines, IA 50311 (United States)

2011-05-11T23:59:59.000Z

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Spectroscopic investigation of photo-induced proton-coupled electron transfer and Dexter energy transfer in model systems  

E-Print Network (OSTI)

Spectroscopic investigations of systems designed to advance the mechanistic interrogation of photo-induced proton coupled electron transfer (PCET) and proton-coupled (through-bond) energy transfer (PCEnT) are presented. ...

Young, Elizabeth R. (Elizabeth Renee), 1980-

2009-01-01T23:59:59.000Z

302

A DSP based power electronics interface for alternate/renewable energy systems. Quarterly report 3.  

SciTech Connect

This report is an update on the research project involving the implementation of a DSP based power electronics interface for alternate/renewable energy systems that was funded by the Department of Energy under the Inventions and Innovations program 1998. The objective of this research is to develop a utility interface (dc to ac converter) suitable to interconnect alternate/renewable energy sources to the utility system. The DSP based power electronics interface in comparison with existing methods will excel in terms of efficiency, reliability and cost. Moreover DSP-based control provides the flexibility to upgrade/modify control algorithms to meet specific system requirements. The proposed interface will be capable of maintaining stiffness of the ac voltages at the point of common coupling regardless of variation in the input dc bus voltage. This will be achieved without the addition of any extra components to the basic interface topology but by inherently controlling the inverter switching strategy in accordance to the input voltage variation.

2000-03-31T23:59:59.000Z

303

Patterning of LiNbO3 by means of ion irradiation using the electronic energy deposition and wet etching  

Science Conference Proceedings (OSTI)

In order to investigate the damage formation and etching behavior of lithium niobate (LiNbO"3) due to the electronic energy deposition, x-cut LiNbO"3 was irradiated at room temperature with 5MeV Si-ions at ion fluences between 7x10^1^2 and 1x10^1^4cm^-^2. ... Keywords: Electronic energy deposition, Ion irradiation, LiNbO3, Lithium niobate, Patterning, Wet etching

Th. Gischkat; H. Hartung; F. Schrempel; E. B. Kley; A. Tnnermann; W. Wesch

2009-04-01T23:59:59.000Z

304

ENERGY DISTRIBUTION OF TWO-ELECTRON IONIZATION OF HELIUM IN AN INTENSE LASER FIELD.  

DOE Green Energy (OSTI)

It is well known that a neutral atom interacting with a strong laser field will ionize at sufficiently high intensity even for photon energies well below the ionization threshold. When the required number of photons becomes very large, this process is best described by the suppression of the Coulomb barrier by the laser's oscillating electric field, allowing the electron to tunnel into the continuum. As the laser intensity is increased, more tightly bound electrons may be successively liberated by this mechanism. Such a sequential multiple ionization, long accepted as a reasonable approach to the formidable problem of a multielectron atom interacting nonperturbatively with an intense electromagnetic field, provides fair estimates of the various charge state appearance intensities while the tunneling rates are in excellent agreement with single ionization yields. However, more accurate measurements revealed systematic and very large deviations from the tunneling rates: near appearance intensity under standard experimental conditions, the observed double ion yield is several orders of magnitude larger than predicted by the sequential rate. It soon became clear that electrons could not be considered as independent and that electron-electron correlation had to be taken into account. Dynamic correlations have been considered in several theories. First qualitatively in the shakeoff model; then empirically through the e-2e cross-section in the quantum/classical three-step model (tunnel ionization, acceleration by the oscillating electric field and e-2e recollision with the ion); recently through the so-called intense field many-body-S-matrix theory and a purely empirical model of collective tunnel ionization. The validity of these ideas has been examined using numerical models. The measurement of total ion yields over a dynamic range exceeding ten orders of magnitude, a major breakthrough made possible by the availability of high-repetition rate lasers at the beginning of the 90's, was for a long time the only quantitative data to confront theory.

LAFON,R.; CHALOUPKA,J.L.; SHEEHY,B.; DIMAURO,L.F.; PAUL,P.M.; AGOSTINI,P.; KULANDER,K.C.

2000-09-24T23:59:59.000Z

305

Electron energy and charge albedos - calorimetric measurement vs Monte Carlo theory  

SciTech Connect

A new calorimetric method has been employed to obtain saturated electron energy albedos for Be, C, Al, Ti, Mo, Ta, U, and UO/sub 2/ over the range of incident energies from 0.1 to 1.0 MeV. The technique was so designed to permit the simultaneous measurement of saturated charge albedos. In the cases of C, Al, Ta, and U the measurements were extended down to about 0.025 MeV. The angle of incidence was varied from 0/sup 0/ (normal) to 75/sup 0/ in steps of 15/sup 0/, with selected measurements at 82.5/sup 0/ in Be and C. In each case, state-of-the-art predictions were obtained from a Monte Carlo model. The generally good agreement between theory and experiment over this extensive parameter space represents a strong validation of both the theoretical model and the new experimental method. Nevertheless, certain discrepancies at low incident energies, especially in high-atomic-number materials, and at all energies in the case of the U energy albedos are not completely understood.

Lockwood, G.J.; Ruggles, L.E.; Miller, G.H.; Halbleib, J.A.

1981-11-01T23:59:59.000Z

306

Measurement of the solar neutrino energy spectrum using neutrino-electron scattering  

E-Print Network (OSTI)

A measurement of the energy spectrum of recoil electrons from solar neutrino scattering in the Super--Kamiokande detector is presented. The results shown here are obtained from 504 days of data taken between the 31st of May, 1996 and the 25th of March, 1998. The shape of the measured spectrum is compared with the expectation for solar B8 neutrinos. The comparison takes into account both kinematic and detector related effects in the measurement process. The spectral shape comparison between the observation and the expectation gives a chi-square of 25.3 with 15 degrees of freedom, corresponding to a 4.6% confidence level.

The Super-Kamiokande collaboration

1998-12-08T23:59:59.000Z

307

An Exact Calculation of Electron-Ion Energy Splitting in a Hot Plasma  

SciTech Connect

In this brief report, I summarize the rather involved recent work of Brown, Preston, and Singleton (BPS). In Refs. [2] and [3], BPS calculate the energy partition into ions and electrons as a charged particle traverses a non-equilibrium two-temperature plasma. These results are exact to leading and next-to-leading order in the plasma coupling g, and are therefore extremely accurate in a weakly coupled plasma. The new BPS calculations are compared with the more standard work of Fraley et al. [12]. The results differ substantially at higher temperature when T{sub I} {ne} T{sub e}.

Singleton, Robert L [Los Alamos National Laboratory

2012-09-10T23:59:59.000Z

308

Non-locality of energy separating transformations for Dirac electrons in a magnetic field  

E-Print Network (OSTI)

We investigate a non-locality of Moss-Okninski transformation (MOT) used to separate positive and negative energy states in the 3+1 Dirac equation for relativistic electrons in the presence of a magnetic field. Properties of functional kernels generated by the MOT are analyzed and kernel non-localities are characterized by calculating their second moments parallel and perpendicular to the magnetic field. Transformed functions are described and investigated by computing their variances. It is shown that the non-locality of the energy-separating transformation in the direction parallel to the magnetic field is characterized by the Compton wavelength $\\lambda_c=\\hbar/mc$. In the plane transverse to magnetic field the non-locality depends both on magnetic radius $L=(\\hbar/eB)^{1/2}$ and $\\lambda_c$. The non-locality of MO transformation for the 2+1 Dirac equation is also considered.

Tomasz M. Rusin; Wlodek Zawadzki

2011-10-12T23:59:59.000Z

309

Hard Electron Energy Distribution in the Relativistic Shocks of GRB Afterglows  

E-Print Network (OSTI)

Particle acceleration in relativistic shocks is not a very well understood subject. Owing to that difficulty, radiation spectra from relativistic shocks, such as those in GRB afterglows, have been often modelled by making assumptions about the underlying electron distribution. One such assumption is a relatively soft distribution of the particle energy, which need not be true always, as is obvious from observations of several GRB afterglows. In this paper, we describe modifications to the afterglow standard model to accommodate energy spectra which are `hard'. We calculate the overall evolution of the synchrotron and compton flux arising from such a distribution. We also model two afterglows, GRB010222 and GRB020813, under this assumption and estimate the physical parameters.

L. Resmi; D. Bhattacharya

2008-04-08T23:59:59.000Z

310

Energy levels and decoherence properties of single electron and nuclear spins in a defect center in diamond  

E-Print Network (OSTI)

The coherent behavior of the single electron and single nuclear spins of a defect center in diamond and a 13C nucleus in its vicinity, respectively, are investigated. The energy levels associated with the hyperfine coupling of the electron spin of the defect center to the 13C nuclear spin are analyzed. Methods of magnetic resonance together with optical readout of single defect centers have been applied in order to observe the coherent dynamics of the electron and nuclear spins. Long coherence times, in the order of microseconds for electron spins and tens of microseconds for nuclear spins, recommend the studied system as a good experimental approach for implementing a 2-qubit gate.

I. Popa; T. Gaebel; M. Domhan; C. Wittmann; F. Jelezko; J. Wrachtrup

2004-09-12T23:59:59.000Z

311

Experimental investigation of the trapping and energy loss mechanisms of intense relativistic electron rings in hydrogen gas and plasma  

DOE Green Energy (OSTI)

The results of an experimental study on the trapping and energy loss mechanisms of intense, relativistic electron rings confined in Astron-like magnetic field geometries are presented. The work is subdivided into four sections: gas trapping; average ring electron energetics; plasma trapping, and hollow-beam cusp-injection into gas and plasma. The mechanisms by which the injected beam coalesces into a current ring in the existing Cornell RECE-Berta facility are considered. To investigate the nature of ring electron energy loss mechanisms following completion of the trapping process, a diagnostic was developed utilizing multi-foil X-ray absorption spectroscopy to analyze the Bremsstrahlung generated by the electrons as they impinge upon a thin tungsten wire target suspended in the circulating current. Finally, a set of preliminary experimental results is presented in which an annular electron beam was passed through a coaxial, non-adiabatic magnetic cusp located at one end of a magnetic mirror well.

Smith, A.C. Jr.

1977-04-25T23:59:59.000Z

312

Electron 83 Rb / 83m Kr Source for the Energy Scale Monitoring in the KATRIN Experiment  

Science Conference Proceedings (OSTI)

The KATRIN (KArlsruhe TRItium Neutrino) experiment investigates the endpoint region of the tritium ??spectrum aiming for the sensitivity on the neutrino mass of 0.2 eV (90% C.L.). A spectrometer of the MAC?E filter (Magnetic Adiabatic Collimation with an Electrostatic filter) type will be used for a total time of at least 5 years. An unrecognized shift of the filtering potential would directly influence the resulting neutrino mass. To continuously monitor the filtering potential the high voltage (HV) will be simultaneously applied to an additional MAC?E filter spectrometer. In this monitor spectrometer suitable electron sources based on atomic/nuclear standards will be utilized. As one of such monitoring tools the solid 83 Rb / 83m Kr source is intended. It provides conversion electrons from 83m Kr (t 1/2 ?=?1.83? h ) which is continuously generated by 83 Rb (t 1/2 ?86? d ). The Calibration and Monitoring task of the KATRIN project demands the long?term energy stability ?E/E of the K?32 conversion electron line (E?=?17.8? keV ???=?2.7? eV ) of 1.6? ppm / month .

Miroslav Zbo?il; The KATRIN collaboration

2011-01-01T23:59:59.000Z

313

Optimizing a low-energy electron diffraction spin-polarization analyzer for imaging of magnetic surface structures  

Science Conference Proceedings (OSTI)

A newly designed scanning electron microscope with polarization analysis (SEMPA or spin-SEM) for the acquisition of magnetic images is presented. Core component is the spin detector, based on the scattering of low-energy electrons at a W(100) surface in ultrahigh vacuum. The instrument has been optimized with respect to ease of handling and efficiency. The operation and performance of a general low-energy electron diffraction (LEED) detector for SEMPA have been modeled in order to find the optimum operating parameters and to predict the obtainable image asymmetry. Based on the energy dependence of the secondary electron polarization and intensity, the detector output is simulated. For our instrument with optimized performance we demonstrate experimentally 8.6% polarization asymmetry in the domain structure of an iron whisker. This corresponds to 17.2% image contrast, in excellent agreement with the predicted simulated value. A contrast to noise ratio of 27 is achieved at 5 ms acquisition time per pixel.

Froemter, Robert; Hankemeier, Sebastian; Oepen, Hans Peter [Institut fuer Angewandte Physik, Universitaet Hamburg, Jungiusstr. 11, 20355 Hamburg (Germany); Kirschner, Juergen [Max-Planck-Institut fuer Mikrostrukturphysik, Weinberg 2, 06120 Halle (Germany)

2011-03-15T23:59:59.000Z

314

Electron energy boosting in laser-wake-field acceleration with external magnetic field Bapprox1 T and laser prepulses  

SciTech Connect

Hundred-mega-electron-volt electron beams with quasi-monoenergetic distribution, and a transverse geometrical emittance as small as approx0.02 pi mm mrad are generated by low power (7 TW, 45 fs) laser pulses tightly focused in helium gas jets in an external static magnetic field, Bapprox1 T. Generation of monoenergetic beams strongly correlates with appearance of a straight, at least 2 mm length plasma channel in a short time before the main laser pulse and with the energy of copropagating picosecond pedestal pulses (PPP). For a moderate energy PPP, the multiple or staged electron self-injection in the channel gives several narrow peaks in the electron energy distribution.

Hosokai, Tomonao [Photon Pioneers Center, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871, Japan and Japan Science and Technology Agency (JST), CREST, 2-1, Yamadaoka, Suita, Osaka 565-0871 (Japan); Zhidkov, Alexei [Central Research Institute of Electric Power Industry, 2-6-1 Nagasaka, Yokosuka, Kanagawa 240-0196 (Japan); Yamazaki, Atsushi [Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603 (Japan); Mizuta, Yoshio [Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871 (Japan); Uesaka, Mitsuru [Graduate School of Engineering, University of Tokyo, 22-2 Shirane-shirakata, Tokai, Naka, Ibaraki 319-1188 (Japan); Kodama, Ryosuke [Photon Pioneers Center, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871 (Japan) and Japan Science and Technology Agency (JST), CREST, 2-1, Yamadaoka, Suita, Osaka 565-0871 (Japan); Graduate School of Engineering, Osaka University, 2-1, Yamadaoka, Suita, Osaka 565-0871 (Japan)

2010-03-22T23:59:59.000Z

315

Excited state structure, energy and electron transfer dynamics of photosynthetic reaction centers: A hole burning study  

SciTech Connect

The excited state structure, early time energy and electron transfer dynamics for bacterial photosynthetic reaction center of Rhodoseudomonas viridis, Rhodobacter sphaeroides and green plant photosynthetic reaction center of Photosystem 2 (PS 2) have been determined by hole burning spectroscopy. Transient hole burned spectra of the bacterial reaction centers reveal a special pair Franck-Condon marker mode progression with a superimposed zero phonon hole. Such progression is found to be absent in green plant Photosystem 2 which raises the question of structural similarities between the PS 2 and bacterial reaction centers. The excited state decay times are obtained for all systems and found to be consistent with time domain experiments. Similar temperature dependence of the decay kinetics have been observed for both bacterial and PS 2 reaction centers. Study of different preparations of reaction center of Photosystem 2 utilizing hole burning spectroscopy indicates that Triton X-100 detergent significantly affect the absorption and persistent hole burned spectra and disrupts the energy transfer from the accessory chlorophyll to the active pheophytin. The comparison between the bacterial reaction centers and Photosystem 2 has been presented and discussed in order to understand the difference in their early time dynamics and the excited state structure. A theoretical model has been developed based on the principle of linear electron-phonon coupling and imhomogeneous broadening. Our experimental results are found to be in good agreement with the theoretical calculations. 335 refs., 43 figs.

Tang, De-Ming.

1991-03-22T23:59:59.000Z

316

Molecular Structure and Free Energy Landscape for Electron Transport in the Deca-Heme Cytochrome MtrF  

SciTech Connect

The free energy profile for electron flow through the bacterial deca-heme cytochrome MtrF has been computed using thermodynamic integration and classical molecular dynamics. The extensive calculations on two versions of the structure help validate the method and results, because differences in the profiles can be related to differences in the charged amino acids local to specific heme groups. First estimates of reorganization free energies ? yield a range consistent with expectations for partially solvent exposed cofactors, and reveal an activation energy range surmountable for electron flow. Future work will aim at increasing the accuracy of ? with polarizable force field dynamics and quantum chemical energy gap calculations, as well as quantum chemical computation of electronic coupling matrix elements.

Breuer, Marian; Zarzycki, Piotr P.; Shi, Liang; Clarke, Thomas; Edwards, Marcus; Butt, Julea N.; Richardson, David J.; Fredrickson, Jim K.; Zachara, John M.; Blumberger, Jochen; Rosso, Kevin M.

2012-12-01T23:59:59.000Z

317

Minimization of the Energy of the Non-Relativistic One-Electron Pauli-Fierz Model over Quasifree States  

E-Print Network (OSTI)

In this article is proved the existence and uniqueness of a minimizer of the energy for the non-relativistic one electron Pauli-Fierz model, within the class of pure quasifree states. The minimum of the energy on pure quasifree states coincides with the minimum of the energy on quasifree states. Infrared and ultraviolet cutoffs are assumed, along with sufficiently small coupling constant and momentum of the dressed electron. A perturbative expression of the minimum of the energy on quasifree states for a small momentum of the dressed electron and small coupling constant is then given. We also express the Lagrange equation for the minimizer, in terms of the generalized one particle density matrix of the pure quasifree state.

Volker Bach; Sbastien Breteaux; Timmy Tzaneteas

2013-01-05T23:59:59.000Z

318

DIFFUSE HARD X-RAY EMISSION IN STARBURST GALAXIES AS SYNCHROTRON FROM VERY HIGH ENERGY ELECTRONS  

SciTech Connect

The origin of the diffuse hard X-ray (2-10 keV) emission from starburst galaxies is a long-standing problem. We suggest that synchrotron emission of 10-100 TeV electrons and positrons (e {sup {+-}}) can contribute to this emission, because starbursts have strong magnetic fields. We consider three sources of e {sup {+-}} at these energies: (1) primary electrons directly accelerated by supernova remnants, (2) pionic secondary e {sup {+-}} created by inelastic collisions between cosmic ray (CR) protons and gas nuclei in the dense interstellar medium of starbursts, and (3) pair e {sup {+-}} produced between the interactions between 10 and 100 TeV {gamma}-rays and the intense far-infrared (FIR) radiation fields of starbursts. We create one-zone steady-state models of the CR population in the Galactic center (R {<=} 112 pc), NGC 253, M82, and Arp 220's nuclei, assuming a power-law injection spectrum for electrons and protons. We consider different injection spectral slopes, magnetic field strengths, CR acceleration efficiencies, and diffusive escape times, and include advective escape, radiative cooling processes, and secondary and pair e {sup {+-}}. We compare these models to extant radio and GeV and TeV {gamma}-ray data for these starbursts, and calculate the diffuse synchrotron X-ray and inverse Compton (IC) luminosities of these starbursts in the models which satisfy multiwavelength constraints. If the primary electron spectrum extends to {approx}PeV energies and has a proton/electron injection ratio similar to the Galactic value, we find that synchrotron emission contributes 2%-20% of their unresolved, diffuse hard X-ray emission. However, there is great uncertainty in this conclusion because of the limited information on the CR electron spectrum at these high energies. IC emission is likewise a minority of the unresolved X-ray emission in these starbursts, from 0.1% in the Galactic center to 10% in Arp 220's nuclei, with the main uncertainty being the starbursts' magnetic field. We also model generic starbursts, including submillimeter galaxies, in the context of the FIR-X-ray relation, finding that anywhere between 0% and 16% of the total hard X-ray emission is synchrotron for different parameters, and up to 2% in the densest starbursts assuming an E {sup -2.2} injection spectrum and a diffusive escape time of 10 Myr (E/3 GeV){sup -1/2} (h/100 pc). Neutrino observations by IceCube and TeV {gamma}-ray data from HESS, VERITAS, and CTA can further constrain the synchrotron X-ray emission of starbursts. Our models do not constrain the possibility of hard, second components of primary e {sup {+-}} from sources like pulsars in starbursts, which could enhance the synchrotron X-ray emission further.

Lacki, Brian C. [Institute for Advanced Study, Princeton, NJ 08540 (United States)] [Institute for Advanced Study, Princeton, NJ 08540 (United States); Thompson, Todd A. [Department of Astronomy, The Ohio State University, Columbus, OH 43210 (United States)] [Department of Astronomy, The Ohio State University, Columbus, OH 43210 (United States)

2013-01-01T23:59:59.000Z

319

Nuclear physics with a medium-energy Electron-Ion Collider  

E-Print Network (OSTI)

A polarized ep/eA collider (Electron-Ion Collider, or EIC) with variable center-of-mass energy sqrt(s) ~ 20-70 GeV and a luminosity ~ 10^{34} cm^{-2} s^{-1} would be uniquely suited to address several outstanding questions of Quantum Chromodynamics (QCD) and the microscopic structure of hadrons and nuclei: (i) the three-dimensional structure of the nucleon in QCD (sea quark and gluon spatial distributions, orbital motion, polarization, correlations); (ii) the fundamental color fields in nuclei (nuclear parton densities, shadowing, coherence effects, color transparency); (iii) the conversion of color charge to hadrons (fragmentation, parton propagation through matter, in-medium jets). We briefly review the conceptual aspects of these questions and the measurements that would address them, emphasizing the qualitatively new information that could be obtained with the collider. Such a medium-energy EIC could be realized at Jefferson Lab after the 12 GeV Upgrade (MEIC), or at Brookhaven National Lab as the low-energy stage of eRHIC.

A. Accardi; V. Guzey; A. Prokudin; C. Weiss

2011-10-05T23:59:59.000Z

320

Nuclear physics with a medium-energy Electron-Ion Collider  

Science Conference Proceedings (OSTI)

A polarized ep/eA collider (Electron-Ion Collider, or EIC) with variable center-of-mass energy {radical}s {approx} 20-70 GeV and a luminosity {approx}10{sup 34} cm{sup -2} s{sup -1} would be uniquely suited to address several outstanding questions of Quantum Chromodynamics (QCD) and the microscopic structure of hadrons and nuclei: (i) the three-dimensional structure of the nucleon in QCD (sea quark and gluon spatial distributions, orbital motion, polarization, correlations); (ii) the fundamental color fields in nuclei (nuclear parton densities, shadowing, coherence effects, color transparency); (iii) the conversion of color charge to hadrons (fragmentation, parton propagation through matter, in-medium jets). We briefly review the conceptual aspects of these questions and the measurements that would address them, emphasizing the qualitatively new information that could be obtained with the collider. Such a medium-energy EIC could be realized at Jefferson Lab after the 12 GeV Upgrade (MEIC), or at Brookhaven National Lab as the low-energy stage of eRHIC.

A. Accardi, V. Guzey, A. Prokudin, C. Weiss

2012-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Analytical Electron Microscope  

Science Conference Proceedings (OSTI)

... a conventional parallel electron energy-loss spectrometer (EELS) to record spectra of the energy losses experienced by the beam electrons as they ...

2012-10-01T23:59:59.000Z

322

Via Electronic DeliveryU U.S. Department of Energy  

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

July 12, 2010U July 12, 2010U Via Electronic DeliveryU U.S. Department of Energy Office of the General Counsel 1000 Independence Avenue, S.W. Room 6A245 Washington, DC 20585 RE: NBP RFI: Communications Requirements Introduction and Tropos Networks Company Background Tropos Networks is pleased to submit the following commentary and information to the DOE regarding the communication requirements of utilities for Smart Grid applications based on its experience with utility customers. Tropos is a venture backed private company based in Sunnyvale, CA and was founded in 2000. In the 10 years since Tropos was founded, we have developed IP wireless meshing technologies and systems that provides customers a broadband foundation for multiple mission critical

323

HOT ELECTRON ENERGY DISTRIBUTIONS FROM ULTRA-INTENSE LASER SOLID INTERACTIONS  

SciTech Connect

We present experimental data of electron energy distributions from ultra-intense (>10{sup 19} W/cm{sup 2}) laser-solid interactions using the Rutherford Appleton Laboratory Vulcan petawatt laser. These measurements were made using a CCD-based magnetic spectrometer. We present details on the distinct effective temperatures that were obtained for a wide variety of targets as a function of laser intensity. It is found that as the intensity increases from 10{sup 17} W/cm{sup 2} to 10{sup 19} W/cm{sup 2}, a 0.4 dependence on the laser intensity is found. Between 10{sup 19} W/cm{sup 2} and 10{sup 20} W/cm{sup 2}, a gradual rolling off of temperature with intensity is observed.

Chen, H; Wilks, S C; Kruer, W L; Moon, S; Patel, N; Patel, P K; Shepherd, R; Snavely, R

2005-12-08T23:59:59.000Z

324

Electronic film with embedded micro-mirrors for solar energy concentrator systems  

E-Print Network (OSTI)

A novel electronic film solar energy concentrator with embedded micro-mirrors that track the sun is described. The potential viability of this new concept is presented. Due to miniaturization, the amount of material needed for the optical system is minimal. Because it is light-weight and flexible, it can easily be attached to the land or existing structures. This presents an economic advantage over conventional concentrators which require the construction of a separate structure to support them, and motors to orient them to intercept and properly reflect sunlight. Such separate structures must be able to survive gusts, windstorms, earthquakes, etc. This concentrator utilizes the ground or existing edifices which are already capable of withstanding such vicissitudes of nature.

Mario Rabinowitz; Mark Davidson

2004-04-16T23:59:59.000Z

325

EPA ENERGY STAR: Tackling Growth in Home Electronics and Small Appliances  

E-Print Network (OSTI)

Home Electronics and Small Appliances Marla Sanchez, Richardhome electronics and other small appliances emerged onto theother small household appliances as well as EPAs projected

Sanchez, Marla Christine

2008-01-01T23:59:59.000Z

326

Low-energy electron spectrum of a copper target bombarded by {alpha}-particles of {sup 238}Pu  

Science Conference Proceedings (OSTI)

The ({alpha}e) time coincidence method is applied to study the low-energy electron spectrum of a copper target bombarded by {alpha}-particles of {sup 238}Pu. Ionization of atoms bombarded by charged particles is considered as the shaking of electrons into the continuous spectrum due to a sudden perturbation by a flying particle. A comparison of experimental and calculated distributions showed good agreement, which confirms the accuracy of the ionization description as a result of the shaking effect.

Kupryashkin, V. T., E-mail: kupryashkinvt@yahoo.com; Sidorenko, L. P.; Feoktistov, A. I.; Rovenskykh, E. P. [National Academy of Sciences, Institute for Nuclear Research (Ukraine)

2011-04-15T23:59:59.000Z

327

EPA ENERGY STAR: Tackling Growth in Home Electronics and Small Appliances  

E-Print Network (OSTI)

ICF Consulting. 2003. Energy Star Market Penetration ReportConsulting. . 2004. Energy Star Market Penetration Reportmarket data. Figure 4. ENERGY STAR Market Penetration ENERGY

Sanchez, Marla Christine

2008-01-01T23:59:59.000Z

328

Formation of electrostatic structures by wakefield acceleration in ultrarelativistic plasma flows: Electron acceleration to cosmic ray energies  

SciTech Connect

The ever increasing performance of supercomputers is now enabling kinetic simulations of extreme astrophysical and laser produced plasmas. Three-dimensional particle-in-cell (PIC) simulations of relativistic shocks have revealed highly filamented spatial structures and their ability to accelerate particles to ultrarelativistic speeds. However, these PIC simulations have not yet revealed mechanisms that could produce particles with tera-electron volt energies and beyond. In this work, PIC simulations in one dimension (1D) of the foreshock region of an internal shock in a gamma ray burst are performed to address this issue. The large spatiotemporal range accessible to a 1D simulation enables the self-consistent evolution of proton phase space structures that can accelerate particles to giga-electron volt energies in the jet frame of reference, and to tens of tera-electron volt in the Earth's frame of reference. One potential source of ultrahigh energy cosmic rays may thus be the thermalization of relativistically moving plasma.

Dieckmann, M.E.; Shukla, P.K.; Eliasson, B. [Institute of Theoretical Physics IV, Ruhr-University Bochum, D-44780 Bochum (Germany)

2006-06-15T23:59:59.000Z

329

Coherent femtosecond low-energy single-electron pulses for time-resolved diffraction and imaging: A numerical study  

Science Conference Proceedings (OSTI)

We numerically investigate the properties of coherent femtosecond single electron wave packets photoemitted from nanotips in view of their application in ultrafast electron diffraction and non-destructive imaging with low-energy electrons. For two different geometries, we analyze the temporal and spatial broadening during propagation from the needle emitter to an anode, identifying the experimental parameters and challenges for realizing femtosecond time resolution. The simple tip-anode geometry is most versatile and allows for electron pulses of several ten of femtosecond duration using a very compact experimental design, however, providing very limited control over the electron beam collimation. A more sophisticated geometry comprising a suppressor-extractor electrostatic unit and a lens, similar to typical field emission electron microscope optics, is also investigated, allowing full control over the beam parameters. Using such a design, we find {approx}230 fs pulses feasible in a focused electron beam. The main limitation to achieve sub-hundred femtosecond time resolution is the typical size of such a device, and we suggest the implementation of more compact electron optics for optimal performance.

Paarmann, A.; Mueller, M.; Ernstorfer, R. [Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany); Gulde, M.; Schaefer, S.; Schweda, S.; Maiti, M.; Ropers, C. [Courant Research Center Physics and Material Physics Institute, University of Goettingen, Friedrich-Hund-Platz 1, 37077 Goettingen (Germany); Xu, C. [Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin (Germany); Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, 390, Qinghe Road, Jiading, Shanghai 201800 (China); Hohage, T. [Institute of Numerical and Applied Mathematics, University of Goettingen, Lotzestr. 16-18, 37083 Goettingen (Germany); Schenk, F. [Courant Research Center Physics and Material Physics Institute, University of Goettingen, Friedrich-Hund-Platz 1, 37077 Goettingen (Germany); Institute of Numerical and Applied Mathematics, University of Goettingen, Lotzestr. 16-18, 37083 Goettingen (Germany)

2012-12-01T23:59:59.000Z

330

Energy use of U.S. consumer electronics at the end of the 20th century  

E-Print Network (OSTI)

of hours per year. National energy consumption values wereof stock and national energy consumption, by mode and total,Number of Units and National Energy Consumption of Consumer

Rosen, Karen; Meier, Alan

2000-01-01T23:59:59.000Z

331

Ab initio study of low-energy electron collisions with tertafluoroethene, C2F4  

E-Print Network (OSTI)

the overall kinetic energy matrix, while not diagonal, canthe kinetic energy operator has a blocked matrix structure,Matrix elements of derivative operators, such as the kinetic energy,

Trevisan, C.S.; Orel, A.E.; Rescigno, T.N.

2004-01-01T23:59:59.000Z

332

Testing of energy conservation of electronic ballasts for fluorescent lighting. Review of recent results and recommendations for design goals  

SciTech Connect

The performance of two 40-watt T-12 fluorescent lamps driven by both standard core-coil, and electronic ballasts has been measured over a range of temperatures and input voltages that simulate conditions they would experience in typical building installations. When using new energy-efficient lamps and electronic ballasts, an efficiency of 90 lumens/watt has been achieved, which represents an efficiency improvement of over 37% relative to standard lamps and core-coil ballasts. From these results, several design targets are suggested for ballast developers. Additional features of the electronic ballasts, (low noise, no flicker, and light level control), have potential to increase the use of efficient light sources (gas discharge types) as well as permit less costly luminaire construction. The dimming feature should also conserve energy whenever applied.

Verderber, R.R.; Cooper, D.; Ross, D.K.

1978-10-01T23:59:59.000Z

333

Power Electronics for Distributed Energy Systems and Transmission and Distribution Applications: Assessing the Technical Needs for Utility Applications  

DOE Green Energy (OSTI)

Power electronics can provide utilities the ability to more effectively deliver power to their customers while providing increased reliability to the bulk power system. In general, power electronics is the process of using semiconductor switching devices to control and convert electrical power flow from one form to another to meet a specific need. These conversion techniques have revolutionized modern life by streamlining manufacturing processes, increasing product efficiencies, and increasing the quality of life by enhancing many modern conveniences such as computers, and they can help to improve the delivery of reliable power from utilities. This report summarizes the technical challenges associated with utilizing power electronics devices across the entire spectrum from applications to manufacturing and materials development, and it provides recommendations for research and development (R&D) needs for power electronics systems in which the U.S. Department of Energy (DOE) could make a substantial impact toward improving the reliability of the bulk power system.

Tolbert, L.M.

2005-12-21T23:59:59.000Z

334

Laser ablation of electronic materials including the effects of energy coupling and plasma interactions  

E-Print Network (OSTI)

conduction, (2) electron-ion (exothermic) recombination on the cavity walls, (3) short-wavelength thermal plasmaconduction, electron-ion recombination and condensation of vapor on the cavity walls, and the plasma

Zeng, Xianzhong

2004-01-01T23:59:59.000Z

335

Advanced Power Electronic Interfaces for Distributed Energy Systems Part 1: Systems and Topologies  

DOE Green Energy (OSTI)

This report summarizes power electronic interfaces for DE applications and the topologies needed for advanced power electronic interfaces. It focuses on photovoltaic, wind, microturbine, fuel cell, internal combustion engine, battery storage, and flywheel storage systems.

Kramer, W.; Chakraborty, S.; Kroposki, B.; Thomas, H.

2008-03-01T23:59:59.000Z

336

The energy of the quasi-free electron in near critical point nitrogen  

E-Print Network (OSTI)

, Graduate Center ­ CUNY, New York, NY 10016, United States cDepartment of Chemistry, University of Louisiana.L. Findley). Preprint submitted to Elsevier 11 June 2012 #12;1 Introduction The low field electron mobility, 4]. However, to begin to develop models for electron mobility and electron localization in a dense

Findley, Gary L.

337

Audit Report on "Protection of the Department of Energy's Unclassified Sensitive Electronic Information"  

Science Conference Proceedings (OSTI)

The Department of Energy and its contractors store and process massive quantities of sensitive information to accomplish national security, energy, science, and environmental missions. Sensitive unclassified data, such as personally identifiable information (PII), official use only, and unclassified controlled nuclear information require special handling and protection to prevent misuse of the information for inappropriate purposes. Industry experts have reported that more than 203 million personal privacy records have been lost or stolen over the past three years, including information maintained by corporations, educational institutions, and Federal agencies. The loss of personal and other sensitive information can result in substantial financial harm, embarrassment, and inconvenience to individuals and organizations. Therefore, strong protective measures, including data encryption, help protect against the unauthorized disclosure of sensitive information. Prior reports involving the loss of sensitive information have highlighted weaknesses in the Department's ability to protect sensitive data. Our report on Security Over Personally Identifiable Information (DOE/IG-0771, July 2007) disclosed that the Department had not fully implemented all measures recommended by the Office of Management and Budget (OMB) and required by the National Institute of Standards and Technology (NIST) to protect PII, including failures to identify and encrypt PII maintained on information systems. Similarly, the Government Accountability Office recently reported that the Department had not yet installed encryption technology to protect sensitive data on the vast majority of laptop computers and handheld devices. Because of the potential for harm, we initiated this audit to determine whether the Department and its contractors adequately safeguarded sensitive electronic information. The Department had taken a number of steps to improve protection of PII. Our review, however, identified opportunities to strengthen the protection of all types of sensitive unclassified electronic information and reduce the risk that such data could fall into the hands of individuals with malicious intent. In particular, for the seven sites we reviewed: (1) Four sites had either not ensured that sensitive information maintained on mobile devices was encrypted. Or, they had improperly permitted sensitive unclassified information to be transmitted unencrypted through email or to offsite backup storage facilities; (2) One site had not ensured that laptops taken on foreign travel, including travel to sensitive countries, were protected against security threats; and, (3) Although required by the OMB since 2003, we learned that programs and sites were still working to complete Privacy Impact Assessments - analyses designed to examine the risks and ramifications of using information systems to collect, maintain, and disseminate personal information. Our testing revealed that the weaknesses identified were attributable, at least in part, to Headquarters programs and field sites that had not implemented existing policies and procedures requiring protection of sensitive electronic information. In addition, a lack of performance monitoring contributed to the inability of the Department and the National Nuclear Security Administration (NNSA) to ensure that measures were in place to fully protect sensitive information. As demonstrated by previous computer intrusion-related data losses throughout the Department, without improvements, the risk or vulnerability for future losses remains unacceptably high. In conducting this audit, we recognized that data encryption and related techniques do not provide absolute assurance that sensitive data is fully protected. For example, encryption will not necessarily protect data in circumstances where organizational access controls are weak or are circumvented through phishing or other malicious techniques. However, as noted by NIST, when used appropriately, encryption is an effective tool that can, as part of an overall risk-management strat

None

2009-08-01T23:59:59.000Z

338

Many Small Consumers, One Growing Problem: Achieving Energy Savings for Electronic Equipment Operating in Low Power Modes  

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

Small Consumers, One Growing Problem: Achieving Energy Savings Small Consumers, One Growing Problem: Achieving Energy Savings for Electronic Equipment Operating in Low Power Modes Christopher Payne, Lawrence Berkeley National Laboratory Alan Meier, International Energy Agency ABSTRACT An increasing amount of electricity is used by equipment that is neither fully "on" nor fully "off." We call these equipment states low power modes, or "lopomos." "Standby" and "sleep" are the most familiar lopomos, but some new products already have many modes. Lopomos are becoming common in household appliances, safety equipment, and miscellaneous products. Ross and Meier (2000) reports that several international studies have found standby power to be as much as 10% of residential energy consumption. Lopomo energy consumption is

339

Nature and Energies of Electrons and Holes in a Conjugated Polymer...  

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

Asaoka, and John R. Miller J. Am. Chem. Soc. 128, 16073-16082 (2006). Find paper at ACS Publications Abstract: Electrons and holes were injected selectively into...

340

Depletion and harvesting thermal energy from actuator arm electronics in hard disk drives.  

E-Print Network (OSTI)

??In recent years, thermally assistive magnetic recording (TAMR) has been applied on actuator arm electronics (AE) in hard disk drive (HDD). When HDD operates, temperature (more)

Wu, Di

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Precision cutting of nanotubes with a low-energy electron beam  

lective damage has been induced in transmission electron ... During cutting, the SEM was operated in line scan mode at maximum magni?cation s1063d, ...

342

New power converter topologies for minimizing energy consumption of electronic appliances .  

E-Print Network (OSTI)

??The proliferation of electronic equipment that is permanently connected to the grid causes significant parasitic losses. Yet, the design of power supplies for PCs, servers, (more)

Nilakantan, Ravishankar

2011-01-01T23:59:59.000Z

343

Aberration corrected scanning transmission electron microscopy and electron energy loss spectroscopy studies of epitaxial Fe/MgO/(001)Ge heterostructures  

SciTech Connect

Aberration correction in the scanning transmission electron microscope combined with electron energy loss spectroscopy allows simultaneous mapping of the structure, the chemistry and even the electronic properties of materials in one single experiment with spatial resolutions of the order of one Angstrom. Here the authors will apply these techniques to the characterization of epitaxial Fe/MgO/(001)Ge and interfaces with possible applications for tunneling junctions, and the authors will show that epitaxial MgO films can be grown on a (001)Ge substrates by molecular beam epitaxy and how it is possible to map the chemistry of interfaces with atomic resolution. Epitaxial growth of insulator oxides on semiconductors constitutes a key issue within the field of electronics, and a considerably large effort has been devoted to harness the growth of high-k oxides on Si. Ge, due to its high electronic and hole mobility, is a very interesting alternative as a potential substrate for future high performance complementary metal-oxide-semiconductor field-effect transistors. However, a major issue is to avoid the high resistivity at the source and drain contacts ensuing from the pinning of the Fermi level at the valence-band maximum. It has been suggested that this problem could be fixed by depositing a thin insulating tunneling barrier between the Ge substrate and the metal contacts. In this case, single crystal epitaxy would represent an additional benefit, since it would lead to a reduction of interfacial defects and improved performance of the tunneling barrier. MgO has been suggested to fulfill such requisites. Furthermore, MgO has been demonstrated to be a good substrate for epitaxial growth of transition metals thin films, such as Fe and Co, thus avoiding the potential problem of chemical reactivity with Ge. In such a scenario, epitaxial deposition of high quality MgO films on Ge substrates is highly desirable. But in addition, successful epitaxial growth of MgO on a semiconductor would also constitute a plus for applications in spintronics, since the injection of a spin polarized current from a ferromagnetic electrode to a non-magnetic semiconductor requires the presence of a potential barrier. MgO represents a convenient choice because the symmetry filtering properties at the interface with transition metals would allow an efficient spin filtering effect. For this approach to succeed, a suitable semiconducting substrate where MgO can be grown epitaxially must be found. And again, while GaAs and Si have been investigated for such role, Ge has not received much attention so far. In this study the authors report on the atomic resolution characterization of high quality interfaces in Fe/MgO/(001)Ge heterostructures. The study of the defects, the inhomogeneities and the interface structure of such junctions is a must to pave the way toward future applications. For this aim, the combination of scanning transmission electron microscopy (STEM) and electron energy loss spectroscopy (EELS) is a most useful tool, since it allows these features to be probed with atomic resolution. Spherical aberration correction in the STEM allows for increased contrast, allowing even single atoms to be detected both in imaging and spectroscopy.

Gazquez Alabart, Jaume [ORNL; Varela del Arco, Maria [ORNL; Petti, D. [Politecnico di Milano; Cantoni, M. [Politecnico di Milano; Rinaldi, C. [Politecnico di Milano; Brivio, S. [Politecnico di Milano; Bertacco, R. [Politecnico di Milano

2011-01-01T23:59:59.000Z

344

A battery-operated, stabilized, high-energy pulsed electron gun for the production of rare gas excimers  

E-Print Network (OSTI)

We report on the design of a new type of electron gun to be used for experiments of infrared emission spectroscopy of rare gas excimers. It is based on a filament heated by means of a pack of rechargeable batteries floated atop the high-voltage power supply. The filament current is controlled by a feedback circuit including a superluminescent diode decoupled from the high voltage by means of an optical fiber. Our experiment requires that the charge injection is pulsed and constant and stable in time. This electron gun can deliver several tens of nC per pulse of electrons of energy up to $100\\,$keV into the sample cell. This new design eliminates ripples in the emission current and ensures up to 12 hrs of stable performance.

Barcellan, L; Carugno, G; Galet, G; Galeazzi, G; Borghesani, A F

2011-01-01T23:59:59.000Z

345

Energy Performance and Emissions of Electronic Ballasts Powering 4-Foot Fluorescent Lamps  

Science Conference Proceedings (OSTI)

This power quality (PQ) case study presents tests performed at the Worcester Polytechnic Institute, in contract with the EPRI Power Electronics Applications Center (PEAC) to determine the average efficacy (lumens per watt), displacement power factor, total power factor, and current harmonic distortion of modern electronic ballasts powering fluorescent lamps.

2003-12-31T23:59:59.000Z

346

NREL Helps Cool the Power Electronics in Electric Vehicles (Fact Sheet), The Spectrum of Clean Energy Innovation, NREL (National Renewable Energy Laboratory)  

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

Helps Cool the Power Helps Cool the Power Electronics in Electric Vehicles Researchers at the National Renewable Energy Laboratory (NREL) are developing and demonstrating innovative heat-transfer technologies for cooling power electronics devices in hybrid and electric vehicles. In collaboration with 3M and Wolverine Tube, Inc., NREL is using surface enhancements to dissipate heat more effectively, permitting a reduction in the size of power electronic systems and potentially reducing the overall costs of electric vehicles. Widespread use of advanced electric-drive vehicles-including electric vehicles (EVs) and hybrid electric vehicles (HEVs)-could revolutionize transportation and dramatically reduce U.S. oil consumption. Improving the cost and performance of these vehicles' electric-drive systems

347

A system of beam energy measurement based on the Compton backscattered laser photons for the VEPP-2000 electron-positron collider  

E-Print Network (OSTI)

The beam energy measurement system for the VEPP-2000 electron-positron collider is described. The method of Compton backscattering of $CO$ laser photons on the electron beam is used. The relative systematic uncertainty of the beam energy determination is estimated as 6\\cdot10^{-5}. It was obtained through comparison of the results of the beam energy measurements using the Compton backscattering and resonance depolarization methods.

E. V. Abakumova; M. N. Achasov; D. E. Berkaev; V. V. Kaminsky; I. A. Koop; A. A. Korol; S. V. Koshuba; A. A. Krasnov; N. Yu. Muchnoi; E. A. Perevedentsev; E. E. Pyata; P. Yu. Shatunov; Yu. M. Shatunov; D. B. Shwartz

2013-10-29T23:59:59.000Z

348

A system of beam energy measurement based on the Compton backscattered laser photons for the VEPP-2000 electron-positron collider  

E-Print Network (OSTI)

The beam energy measurement system for the VEPP-2000 electron-positron collider is described. The method of Compton backscattering of $CO$ laser photons on the electron beam is used. The relative systematic uncertainty of the beam energy determination is estimated as 6\\cdot10^{-5}. It was obtained through comparison of the results of the beam energy measurements using the Compton backscattering and resonance depolarization methods.

Abakumova, E V; Berkaev, D E; Kaminsky, V V; Koop, I A; Korol, A A; Koshuba, S V; Krasnov, A A; Muchnoi, N Yu; Perevedentsev, E A; Pyata, E E; Shatunov, P Yu; Shatunov, Yu M; Shwartz, D B

2013-01-01T23:59:59.000Z

349

The World's First Free-Electron X-ray Laser | Department of Energy  

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

First Free-Electron X-ray Laser First Free-Electron X-ray Laser The World's First Free-Electron X-ray Laser August 17, 2010 - 6:19pm Addthis The World's First Free-Electron X-ray Laser John Schueler John Schueler Former New Media Specialist, Office of Public Affairs Yesterday, Secretary Chu participated in the dedication of the world's first free-electron and most powerful X-ray laser, the Linac Coherent Light Source (LCLS). In light of this occasion (pun intended), we posted an in-depth look at the innovative nature of this new instrument and its potential to tackle some of life's biggest mysteries. The Secretary seemed just as geeked about the possibilities of the LCLS, stating that "this is a new instrument that will enable us to see the structure of materials that we could not determine by any other means ... Knowing those

350

Dependence on proton energy of degradation of AlGaN/GaN high electron mobility transistors  

Science Conference Proceedings (OSTI)

The effects of proton irradiation energy on dc, small signal, and large signal rf characteristics of AlGaN/GaN high electron mobility transistors (HEMTs) were investigated. AlGaN/GaN HEMTs were irradiated with protons at fixed fluence of 51015/cm2 and energies of 5, 10, and 15 MeV. Both dc and rf characteristics revealed more degradation at lower irradiation energy, with reductions of maximum transconductance of 11%, 22%, and 38%, and decreases in drain saturation current of 10%, 24%, and 46% for HEMTs exposed to 15, 10, and 5MeV protons, respectively. The increase in device degradation with decreasing proton energy is due to the increase in linear energy transfer and corresponding increase in nonionizing energy loss with decreasing proton energy in the active region of the HEMTs. After irradiation, both subthreshold drain leakage current and reverse gate current decreased more than 1 order of magnitude for all samples. The carrier removal rate was in the range 121 336 cm1 over the range of proton energies employed in this study

Liu, L. [University of Florida, Gainesville; Xi, Y. Y. [University of Florida, Gainesville; Wang, Y.l. [University of Florida; Ren, F. [University of Florida; Pearton, S. J. [University of Florida; Kim, H.-Y. [Korea University; Kim, J. [Korea University; Fitch, Robert C [Air Force Research Laboratory, Wright-Patterson AFB, OH; Walker, Dennis E [Air Force Research Laboratory, Wright-Patterson AFB, OH; Chabak, Kelson D [Air Force Research Laboratory, Wright-Patterson AFB, OH; Gillespie, James k [Air Force Research Laboratory, Wright-Patterson AFB, OH; Tetlak, Stephen E [Air Force Research Laboratory, Wright-Patterson AFB, OH; Via, Glen D [Air Force Research Laboratory, Wright-Patterson AFB, OH; Crespo, Antonio [Air Force Research Laboratory, Wright-Patterson AFB, OH; Kravchenko, Ivan I [ORNL

2013-01-01T23:59:59.000Z

351

A battery-operated, stabilized, high-energy pulsed electron gun for the production of rare gas excimers  

Science Conference Proceedings (OSTI)

We report on the design of a new type of hot-filament electron gun delivering fairly high current (a few hundreds of {mu} A) at high voltage (up to 100 kV) in continuous or pulsed mode. Its novel features are that the filament is heated by means of a pack of rechargeable batteries floated atop the high-voltage power supply in order to get rid of bulky isolation transformers, and that the filament current and, hence, the electron gun current, is controlled by a feedback circuit including a superluminescent diode decoupled from the high voltage by means of an optical fiber. This electron gun is intended for general purposes, although we have especially developed it to meet the needs of our experiment on the infrared emission spectroscopy of rare gas excimers. Our experiment requires that the charge injection into the sample is pulsed and constant and stable in time. The new electron gun can deliver several tens of nC per pulse of electrons of energy up to 100 keV into the sample cell. The new design also eliminates ripples in the emission current and ensures up to 12 h of stable performance.

Barcellan, L.; Carugno, G. [INFN Section, Padua (Italy); Berto, E.; Galet, G.; Galeazzi, G. [Department of Physics, University of Padua (Italy); Borghesani, A. F. [INFN Section, Padua (Italy); CNISM Unit, Department of Physics, University of Padua (Italy)

2011-09-15T23:59:59.000Z

352

Electron-Ion Collisions  

Science Conference Proceedings (OSTI)

... Since the ions are created and excited with the same beam of electrons, by changing the electron beam energy one can selectively exclude certain ...

2010-12-07T23:59:59.000Z

353

Low-energy, high-current, ion source with cold electron emitter  

SciTech Connect

An ion source based on a two-stage discharge with electron injection from a cold emitter is presented. The first stage is the emitter itself, and the second stage provides acceleration of injected electrons for gas ionization and formation of ion flow (<20 eV, 5 A dc). The ion accelerating system is gridless; acceleration is accomplished by an electric field in the discharge plasma within an axially symmetric, diverging, magnetic field. The hollow cathode electron emitter utilizes an arc discharge with cathode spots hidden inside the cathode cavity. Selection of the appropriate emitter material provides a very low erosion rate and long lifetime.

Vizir, A. V.; Oks, E. M. [High Current Electronics Institute, Russian Academy of Sciences, Tomsk 634055 (Russian Federation); State University of Control Systems and Radioelectronics, Tomsk 634050 (Russian Federation); Shandrikov, M. V.; Yushkov, G. Yu. [High Current Electronics Institute, Russian Academy of Sciences, Tomsk 634055 (Russian Federation)

2012-02-15T23:59:59.000Z

354

Elimination of two atomic electrons by a single high energy photon  

Science Conference Proceedings (OSTI)

This report discusses the following topics: mechanism of two-electron photoionization; multiple photoionization near inner shell thresholds; double ionization accompanying compton-effect; and the investigation of secondary photon emission in coincidence with double charged ion production.

Amusia, M.Y. [Argonne National Lab., IL (United States); Ioffe, A.F. [AN SSSR, Leningrad (Russian Federation). Fiziko-Tekhnicheskij Inst.

1993-12-31T23:59:59.000Z

355

Using Wireless Power Meters to Measure Energy Use of Miscellaneous and Electronic Devices in Buildings  

E-Print Network (OSTI)

References US DOE. 2009 Buildings Energy Databook. U.S.measurements. Energy and Buildings. Vol. 40. 2008. pp. RothSavings Potential in 2008 by Building Type. TIAX LLC, 2010.

Brown, Richard

2012-01-01T23:59:59.000Z

356

Multi-wavelength analysis of high energy electrons in solar flares: a case study of August 20, 2002 flare  

E-Print Network (OSTI)

A multi-wavelength spatial and temporal analysis of solar high energy electrons is conducted using the August 20, 2002 flare of an unusually flat (gamma=1.8) hard X-ray spectrum. The flare is studied using RHESSI, Halpha, radio, TRACE, and MDI observations with advanced methods and techniques never previously applied in the solar flare context. A new method to account for X-ray Compton backscattering in the photosphere (photospheric albedo) has been used to deduce the primary X-ray flare spectra. The mean electron flux distribution has been analysed using both forward fitting and model independent inversion methods of spectral analysis. We show that the contribution of the photospheric albedo to the photon spectrum modifies the calculated mean electron flux distribution, mainly at energies below 100 keV. The positions of the Halpha emission and hard X-ray sources with respect to the current-free extrapolation of the MDI photospheric magnetic field and the characteristics of the radio emission provide evidence of the closed geometry of the magnetic field structure and the flare process in low altitude magnetic loops. In agreement with the predictions of some solar flare models, the hard X-ray sources are located on the external edges of the Halpha emission and show chromospheric plasma heated by the non-thermal electrons. The fast changes of Halpha intensities are located not only inside the hard X-ray sources, as expected if they are the signatures of the chromospheric response to the electron bombardment, but also away from them.

J. Kasparova; M. Karlicky; E. P. Kontar; R. A. Schwartz; B. R. Dennis

2005-08-30T23:59:59.000Z

357

A reverse Monte Carlo method for deriving optical constants of solids from reflection electron energy-loss spectroscopy spectra  

SciTech Connect

A reverse Monte Carlo (RMC) method is developed to obtain the energy loss function (ELF) and optical constants from a measured reflection electron energy-loss spectroscopy (REELS) spectrum by an iterative Monte Carlo (MC) simulation procedure. The method combines the simulated annealing method, i.e., a Markov chain Monte Carlo (MCMC) sampling of oscillator parameters, surface and bulk excitation weighting factors, and band gap energy, with a conventional MC simulation of electron interaction with solids, which acts as a single step of MCMC sampling in this RMC method. To examine the reliability of this method, we have verified that the output data of the dielectric function are essentially independent of the initial values of the trial parameters, which is a basic property of a MCMC method. The optical constants derived for SiO{sub 2} in the energy loss range of 8-90 eV are in good agreement with other available data, and relevant bulk ELFs are checked by oscillator strength-sum and perfect-screening-sum rules. Our results show that the dielectric function can be obtained by the RMC method even with a wide range of initial trial parameters. The RMC method is thus a general and effective method for determining the optical properties of solids from REELS measurements.

Da, B.; Sun, Y.; Ding, Z. J. [Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China (China)] [Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China (China); Mao, S. F. [School of Nuclear Science and Technology, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China (China)] [School of Nuclear Science and Technology, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China (China); Zhang, Z. M. [Centre of Physical Experiments, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China (China)] [Centre of Physical Experiments, University of Science and Technology of China, 96 Jinzhai Road, Hefei, Anhui 230026, People's Republic of China (China); Jin, H.; Yoshikawa, H.; Tanuma, S. [Advanced Surface Chemical Analysis Group, National Institute for Materials Science, 1-2-1 Sengen Tsukuba, Ibaraki 305-0047 (Japan)] [Advanced Surface Chemical Analysis Group, National Institute for Materials Science, 1-2-1 Sengen Tsukuba, Ibaraki 305-0047 (Japan)

2013-06-07T23:59:59.000Z

358

Leaking Electricity: Individual Field Measurement of Consumer Electronics David B. Floyd, Florida Solar Energy Center  

E-Print Network (OSTI)

case, a single Vampire can increase network-wide energy usage by a factor of O(N), where N of packets sent remains constant. Safety from Vampire attacks implies that this ratio is 1. Energy use energy to transmit packets, each packet is still more expensive to transmit in the presence of Vampires

359

State-selective electron capture in {sup 3}He{sup 2+} + He collisions at intermediate impact energies  

SciTech Connect

In this work we have measured single-electron capture in collisions of {sup 3}He{sup 2+} projectiles incident on a helium target for energies of 13.3-100 keV/amu with the cold-target recoil-ion momentum spectroscopy setup implemented at the Centro Atomico Bariloche. State-selective single-capture cross sections were measured as a function of the impact energy. They were found to agree with previous existing data from the Frankfurt group, starting at the impact energy of 60 keV/amu; as well as with recent data, at 7.5 keV/amu, from the Lanzhou group. The present experimental results are also contrasted to the classical trajectory Monte Carlo method with dynamical screening.

Alessi, M. [Instituto Balseiro, Av. E. Bustillo 9500, 8400 San Carlos de Bariloche (Argentina); Centro Atomico Bariloche, Av. E. Bustillo 9500, 8400 San Carlos de Bariloche (Argentina); Otranto, S. [CONICET and Departamento de Fisica Universidad Nacional del Sur, Av. Alem 1253, 8000 Bahia Blanca (Argentina); Focke, P. [Centro Atomico Bariloche, Av. E. Bustillo 9500, 8400 San Carlos de Bariloche (Argentina)

2011-01-15T23:59:59.000Z

360

Injection of electrons with predominantly perpendicular energy into an area of toroidal field ripple in a tokamak plasma to improve plasma confinement  

DOE Patents (OSTI)

An electron injection scheme for controlling transport in a tokamak plasma. Electrons with predominantly perpendicular energy are injected into a ripple field region created by a group of localized poloidal field bending magnets. The trapped electrons then grad-B drift vertically toward the plasma interior until they are detrapped, charging the plasma negative. Calculations indicate that the highly perpendicular velocity electrons can remain stable against kinetic instabilities in the regime of interest for tokamak experiments. The penetration distance can be controlled by controlling the "ripple mirror ratio", the energy of the injected electrons, and their v.sub..perp. /v.sub.51 ratio. In this scheme, the poloidal torque due to the injected radial current is taken by the magnets and not by the plasma. Injection is accomplished by the flat cathode containing an ECH cavity to pump electrons to high v.sub..perp..

Ono, Masayuki (Princeton Junction, NJ); Furth, Harold (Princeton, NJ)

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Injection of electrons with predominantly perpendicular energy into an area of toroidal field ripple in a tokamak plasma to improve plasma confinement  

DOE Patents (OSTI)

An electron injection scheme for controlling transport in a tokamak plasma. Electrons with predominantly perpendicular energy are injected into a ripple field region created by a group of localized poloidal field bending magnets. The trapped electrons then grad-B drift vertically toward the plasma interior until they are detrapped, charging the plasma negative. Calculations indicate that the highly perpendicular velocity electrons can remain stable against kinetic instabilities in the regime of interest for tokamak experiments. The penetration distance can be controlled by controlling the ``ripple mirror ratio``, the energy of the injected electrons, and their v{sub {perpendicular}}/v{sub {parallel}}, ratio. In this scheme, the poloidal torque due to the injected radial current is taken by the magnets and not by the plasma. Injection is accomplished by the flat cathode containing an ECH cavity to pump electrons to high v{sub {perpendicular}}.

Ono, M.; Furth, H.

1991-12-31T23:59:59.000Z

362

Energy spread reduction of electron beams produced via laser wakefield acceleration  

E-Print Network (OSTI)

The energy in each pulse entering the regenerative ampli?erenergy to 250 mJ. The Ti:Sapphire crystal in the regenerative (

Pollock, Bradley Bolt

2012-01-01T23:59:59.000Z

363

Optical transition radiation used in the diagnostic of low energy and low current electron beams in particle accelerators  

Science Conference Proceedings (OSTI)

Optical transition radiation (OTR) plays an important role in beam diagnostics for high energy particle accelerators. Its linear intensity with beam current is a great advantage as compared to fluorescent screens, which are subject to saturation. Moreover, the measurement of the angular distribution of the emitted radiation enables the determination of many beam parameters in a single observation point. However, few works deals with the application of OTR to monitor low energy beams. In this work we describe the design of an OTR based beam monitor used to measure the transverse beam charge distribution of the 1.9-MeV electron beam of the linac injector of the IFUSP microtron using a standard vision machine camera. The average beam current in pulsed operation mode is of the order of tens of nano-Amps. Low energy and low beam current make OTR observation difficult. To improve sensitivity, the beam incidence angle on the target was chosen to maximize the photon flux in the camera field-of-view. Measurements that assess OTR observation (linearity with beam current, polarization, and spectrum shape) are presented, as well as a typical 1.9-MeV electron beam charge distribution obtained from OTR. Some aspects of emittance measurement using this device are also discussed.

Silva, T. F.; Bonini, A. L.; Lima, R. R.; Maidana, N. L.; Malafronte, A. A.; Pascholati, P. R.; Vanin, V. R.; Martins, M. N. [Institute of Physics, University of Sao Paulo, CP 66318, 05315-970 Sao Paulo, SP (Brazil)

2012-09-15T23:59:59.000Z

364

Location of hydrogen adsorbed on Rh(111) studied by low-energy electron diffraction and nuclear reaction analysis  

Science Conference Proceedings (OSTI)

The structures of clean and hydrogen-adsorbed Rh(111) surfaces were investigated by dynamical low-energy electron-diffraction (LEED) analysis. Exposure of D{sub 2} induced no additional LEED patterns except for (1x1). Surface-layer relaxation occurs vertically on both clean and D-saturated surfaces. On the clean surface, the interlayer distance between the first and second layers (d{sub 12}) is smaller by 1.2({+-}0.6)% than the corresponding bulk distance of 2.194 A. On the other hand, the contraction of d{sub 12} is removed on the D-saturated surface. Detailed LEED analysis demonstrates that the D atoms are adsorbed on the fcc threefold hollow sites. The absolute saturation coverage of H on Rh(111) was determined to be 0.84 ML by nuclear reaction analysis (NRA). Moreover, the zero-point vibrational energy of H was derived from the analysis of the NRA resonance profile, which is discussed in comparison with the results of high-resolution electron-energy-loss spectroscopy.

Fukuoka, Masayuki; Okada, Michio; Matsumoto, Masuaki; Ogura, Shouhei; Fukutani, Katsuyuki; Kasai, Toshio [Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043 (Japan); Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan and PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012 (Japan); Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 156-8505, Japan and CREST-JST, 4-6-1 Komaba, Meguro-ku, Tokyo 156-8505 (Japan); Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka 560-0043 (Japan)

2007-06-15T23:59:59.000Z

365

High energy electron beam curing of epoxy resin systems incorporating cationic photoinitiators  

DOE Patents (OSTI)

A mixture of epoxy resins such as a semi-solid triglycidyl ether of tris (hydroxyphenyl) methane and a low viscosity bisphenol A glycidyl ether and a cationic photoinitiator such as a diaryliodonium salt is cured by irradiating with a dosage of electron beams from about 50 to about 150 kGy, forming a cross-linked epoxy resin polymer.

Janke, Christopher J. (Powell, TN); Lopata, Vincent J. (Manitoba, CA); Havens, Stephen J. (Knoxville, TN); Dorsey, George F. (Farragut, TN); Moulton, Richard J. (Lafayette, CA)

1999-01-01T23:59:59.000Z

366

Helium, Iron and Electron Particle Transport and Energy Transport Studies on the TFTR Tokamak  

DOE R&D Accomplishments (OSTI)

Results from helium, iron, and electron transport on TFTR in L-mode and Supershot deuterium plasmas with the same toroidal field, plasma current, and neutral beam heating power are presented. They are compared to results from thermal transport analysis based on power balance. Particle diffusivities and thermal conductivities are radially hollow and larger than neoclassical values, except possibly near the magnetic axis. The ion channel dominates over the electron channel in both particle and thermal diffusion. A peaked helium profile, supported by inward convection that is stronger than predicted by neoclassical theory, is measured in the Supershot The helium profile shape is consistent with predictions from quasilinear electrostatic drift-wave theory. While the perturbative particle diffusion coefficients of all three species are similar in the Supershot, differences are found in the L-Mode. Quasilinear theory calculations of the ratios of impurity diffusivities are in good accord with measurements. Theory estimates indicate that the ion heat flux should be larger than the electron heat flux, consistent with power balance analysis. However, theoretical values of the ratio of the ion to electron heat flux can be more than a factor of three larger than experimental values. A correlation between helium diffusion and ion thermal transport is observed and has favorable implications for sustained ignition of a tokamak fusion reactor.

Synakowski, E. J.; Efthimion, P. C.; Rewoldt, G.; Stratton, B. C.; Tang, W. M.; Grek, B.; Hill, K. W.; Hulse, R. A.; Johnson, D .W.; Mansfield, D. K.; McCune, D.; Mikkelsen, D. R.; Park, H. K.; Ramsey, A. T.; Redi, M. H.; Scott, S. D.; Taylor, G.; Timberlake, J.; Zarnstorff, M. C. (Princeton Univ., NJ (United States). Plasma Physics Lab.); Kissick, M. W. (Wisconsin Univ., Madison, WI (United States))

1993-03-00T23:59:59.000Z

367

ELECTRON ENERGY DEPENDENCE OF AMORPHIZATION IN Zr3Fe , L.M. HOWE  

E-Print Network (OSTI)

approximately 23 reactors assuming projects operate for more than 100 years.** Canadian deuterium uranium (CANDU, Nuclear Power in Canada: The CANDU System, July 1990; and Heavy Water, brochure published by Ontario Hydro the Atomic Energy of Canada Limited to develop the peaceful uses of nuclear energy and develop CANDU heavy

Motta, Arthur T.

368

Single- and double-electron capture processes in low-energy collisions of N{sup 3+} with He  

SciTech Connect

Single-electron capture (SEC) and double-electron capture (DEC) processes in collisions of ground state N{sup 3+} (2s{sup 2} {sup 1}S) ions with He are investigated by using the quantum-mechanical molecular-orbital close-coupling (QMOCC) method. The ab initio adiabatic potentials, radial and rotational coupling matrices utilized in QMOCC calculations, are obtained from the multireference single- and double-excitation configuration interaction approach. Total and state-selective SEC and DEC cross sections are presented in the low-energy range from 0.1 eV to 15 keV (i.e., 0.007 eV/u -1.07 keV/u) and rate coefficients in the temperature range from 10{sup 4} to 10{sup 7} K. Our results indicate that the SEC dominates the charge-transfer process in the considered energy region of this collision system and the SEC cross sections are nearly constant in the relatively high-collision energy region, while the DEC cross sections are about 2 orders of magnitude smaller. It is found that, for the SEC processes, in the dominant mechanisms, electrons are captured to exoergic channels N{sup 2+} (2s2p{sup 2} {sup 2}D,{sup 2}S), and for the DEC processes, they are captured to N{sup +} (2s{sup 2}2p{sup 2} {sup 1}D,{sup 1}S). Our calculations also reveal that rotational couplings become important at E > 10 eV/u for SEC and E > 200 eV/u for DEC processes.

Liu, X. J. [Institute of Plasma Physics, Chinese Academy of Sciences, P.O. Box 1126, Hefei 230031 (China); Wang, J. G. [Institute of Applied Physics and Computational Mathematics, P.O. Box 8009, Beijing 100088 (China); Qu, Y. Z. [College of Material Sciences and Optoelectronic Technology, Graduate University of the Chinese Academy of Sciences, P.O. Box 4588, Beijing 100049 (China); Buenker, R. J. [Fachbereich C-Mathematik und Naturwissenschaften, Bergische Universitaet Wuppertal, D-42097 Wuppertal (Germany)

2011-10-15T23:59:59.000Z

369

Automated Electron Microscopy Film Scanner  

Renewable Energy; Environmental Technologies. ... film meets high performance specifications at higher electron energies while digital cameras do not; ...

370

Simple model of bulk and surface excitation effects to inelastic scattering in low-energy electron beam irradiation of multi-walled carbon nanotubes  

SciTech Connect

The effect of bulk and surface excitations to inelastic scattering in low-energy electron beam irradiation of multi-walled carbon nanotubes (MWNTs) is studied using the dielectric formalism. Calculations are based on a semiempirical dielectric response function for MWCNTs determined by means of a many-pole plasmon model with parameters adjusted to available experimental spectroscopic data under theoretical sum-rule constrains. Finite-size effects are considered in the context of electron gas theory via a boundary correction term in the plasmon dispersion relations, thus, allowing a more realistic extrapolation of the electronic excitation spectrum over the whole energy-momentum plane. Energy-loss differential and total inelastic scattering cross sections as a function of electron energy and distance from the surface, valid over the energy range {approx}50-30,000 eV, are calculated with the individual contribution of bulk and surface excitations separated and analyzed for the case of normally incident and escaping electrons. The sensitivity of the results to the various approximations for the spatial dispersion of the electronic excitations is quantified. Surface excitations are shown to have a strong influence upon the shape and intensity of the energy-loss differential cross section in the near surface region whereas the general notion of a spatially invariant inelastic mean free path inside the material is found to be of good approximation.

Kyriakou, Ioanna; Emfietzoglou, Dimitris [Medical Physics Lab, University of Ioannina Medical School, 451 10 Ioannina (Greece); Garcia-Molina, Rafael [Departamento de Fisica - CIOyN, Universidad de Murcia, E-30100 Murcia (Spain); Abril, Isabel [Departament de Fisica Aplicada, Universitat d'Alacant, Apartat 99, E-03080 Alacant (Spain); Kostarelos, Kostas [Nanomedicine Lab, Centre for Drug Delivery Research, The School of Pharmacy, University of London, London WC1N 1AX (United Kingdom)

2011-09-01T23:59:59.000Z

371

Theory of low-energy electron diffraction for detailed structural determination of nanomaterials: Finite-size and disordered structures  

Science Conference Proceedings (OSTI)

We describe how a recent efficient theory of low-energy electron diffraction (LEED) enables the determination of finite-size and disordered nanostructures. Our cluster approach, called NANOLEED, speeds up the computation to scale as n log n, rather than the usual n{sup 3} or n{sup 2}, with n the number of atoms, for example, thereby making nanostructures accessible. To illustrate this method's capability to determine nanoscale structure, we apply it to calculate LEED intensities for Si nanowires of various lengths and thicknesses as well as for various deviations of these nanowires from the ideal Si bulk structure.

Gavaza, G. M.; Tong, S. Y.; Van Hove, M. A. [Department of Physics and Materials Science, City University of Hong Kong (China); Yu, Z. X. [Department of Physics and Materials Science, City University of Hong Kong (China); Department of Physics, Zhongshan University, Guangzhou 510275 (China); Tsang, L. [Department of Electrical Engineering, University of Washington, Seattle, Washington 98195-2350 (United States); Chan, C. H. [Department of Electronic Engineering, City University of Hong Kong (China)

2007-06-15T23:59:59.000Z

372

Oxygen chemisorption on Cu(19 19 1) studied by spot profile analysis low-energy electron diffraction  

SciTech Connect

Cu(110) and the vicinal Cu(19 19 1) surfaces were characterized by recording maps of the reciprocal space by means of spot profile analysis low-energy electron diffraction (SPA-LEED). For both surfaces, kinematic simulations were performed to get insight into the main features of the experimental data. Furthermore, it is shown that chemisorption of oxygen and subsequent annealing lead to the formation of a Cu-CuO stripe phase and induce faceting of the Cu(19 19 1) surface. The evolution from the clean Cu(19 19 1) surface to the coexistence of the (110) and (111) facets with increasing oxygen exposure was characterized by SPA-LEED.

Brandstetter, T.; Draxler, M.; Hohage, M.; Zeppenfeld, P. [Institut fuer Experimentalphysik, Johannes Kepler Universitaet Linz, A-4040 Linz (Austria)

2007-12-15T23:59:59.000Z

373

BNL | CFN: Electronic Nanomaterials  

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

goals of our CFN research program in Electronic Nanomaterials involve implementing nanostructures for photovoltaic, photochemical, and electrochemical energy conversion. Our...

374

Matter & Energy Solar Energy  

E-Print Network (OSTI)

See Also: Matter & Energy Solar Energy· Electronics· Materials Science· Earth & Climate Energy at the University of Illinois, the future of solar energy just got brighter. Although silicon is the industry Electronics Over 1.2 Million Electronics Parts, Components and Equipment. www.AlliedElec.com solar energy

Rogers, John A.

375

Low energy electron stimulated desorption from DNA films dosed with oxygen  

SciTech Connect

Desorption of anions stimulated by 1-18 eV electron impact on self-assembled monolayer (SAM) films of single DNA strands is measured as a function of film temperature (50-250 K). The SAMs, composed of 10 nucleotides, are dosed with O{sub 2}. The OH{sup -} desorption yields increase markedly with exposure to O{sub 2} at 50 K and are further enhanced upon heating. In contrast, the desorption yields of O{sup -}, attributable to dissociative electron attachment to trapped O{sub 2} molecules decrease with heating. Irradiation of the DNA films prior to the deposition of O{sub 2} shows that this surprising increase in OH{sup -} desorption, at elevated temperatures, arises from the reaction of O{sub 2} with damaged DNA sites. These results thus appear to be a manifestation of the so-called 'oxygen fixation' effect, well known in radiobiology.

Mirsaleh-Kohan, Nasrin; Bass, Andrew D.; Cloutier, Pierre; Massey, Sylvain; Sanche, Leon [Groupe en sciences des radiations, Faculte de medecine et des sciences de la sante, Universite de Sherbrooke, Sherbrooke, Quebec J1H 5N4 (Canada)

2012-06-21T23:59:59.000Z

376

Exploring electron and phonon transport at the nanoscale for thermoelectric energy conversion  

E-Print Network (OSTI)

Thermoelectric materials are capable of solid-state direct heat to electricity energy conversion and are ideal for waste heat recovery applications due to their simplicity, reliability, and lack of environmentally harmful ...

Minnich, Austin Jerome

2011-01-01T23:59:59.000Z

377

Biofuels from Solar Energy and Bacteria: Electrofuels Via Direct Electron Transfer from Electrodes to Microbes  

Science Conference Proceedings (OSTI)

Electrofuels Project: UMass is feeding renewable electricity to bacteria to provide the microorganisms with the energy they need to turn carbon dioxide (CO2) directly into liquid fuels. UMass energy-to-fuels conversion process is anticipated to be more efficient than current biofuels approaches in part because this process will leverage the high efficiency of photovoltaics to convert solar energy into electricity. UMass is using bacteria already known to produce biofuel from electric current and CO2 and working to increase the amount of electric current those microorganisms will accept and use for biofuels production. In collaboration with scientists at University of California, San Diego, the UMass team is also investigating the use of hydrogen sulfide as a source of energy to power biofuel production.

None

2010-07-01T23:59:59.000Z

378

Time evolution of endpoint energy of Bremsstrahlung spectra and ion production from an electron cyclotron resonance ion source  

SciTech Connect

Electron cyclotron resonance ion sources (ECRIS) are used to produce high charge state heavy ion beams for the use of nuclear and materials science, for instance. The most powerful ECR ion sources today are superconducting. One of the problems with superconducting ECR ion sources is the use of high radio frequency (RF) power which results in bremsstrahlung radiation adding an extra heat load to the cryostat. In order to understand the electron heating process and timescales in the ECR plasma, time evolution measurement of ECR bremsstrahlung was carried out. In the measurements JYFL 14 GHz ECRIS was operated in a pulsed mode and bremsstrahlung data from several hundred RF pulses was recorded. Time evolution of ion production was also studied and compared to one of the electron heating theories. To analyze the measurement data at C++ program was developed. Endpoint energies of the bremsstrahlung spectra as a function of axial magnetic field strength, pressure and RF power are presented and ion production timescales obtained from the measurements are compared to bremsstrahlung emission timescales and one of the stochastic heating theories.

Tarvainen, Ollie [Los Alamos National Laboratory; Ropponen, Tommi [JYFL; Jones, Peter [JYFL; Kalvas, Taneli [JYFL

2008-01-01T23:59:59.000Z

379

Auger line shape and electron energy loss spectroscopy analysis of amorphous, microcrystalline, and. beta. -SiC  

DOE Green Energy (OSTI)

Auger electron spectroscopy (AES) line shape analysis of the Si-{ital L}{sub 23}{ital VV} and C-{ital KLL} peaks has been performed in conjunction with electron energy loss spectroscopy (EELS) on Hg-sensitized photodeposited amorphous and microcyrstalline SiC films. Mixtures of SiH{sub 4}/CH{sub 3}SiH{sub 3} and SiH{sub 4}/(CH{sub 3}){sub 2}SiH{sub 2} with helium or hydrogen dilution were used for the depositions. AES line shape and EELS analyses were also performed on {beta}-SiC for comparison. Quantitative bulk compositional analysis to determine the Si and C concentrations in these films was performed with an electron microprobe (EMPA) using x-ray wavelength dispersive spectroscopy (WDS). AES and EELS results reveal the predominant Si--C bonding and relative crystallinity in the films as a function of deposition parameters, which includes the gas mixture, pressure, and H{sub 2}/He dilution. These parameters determine the H radical flux during growth, which leads to changes in the film structure.

Nelson, A.J.; Mason, A.R.; Swartzlander, A.B.; Kazmerski, L.L. (Solar Energy Research Institute, Golden, CO (USA)); Saxena, N.; Fortmann, C.M.; Russell, T.W.F. (Institute of Energy Conversion, University of Delaware, Newark, DE (USA))

1990-05-01T23:59:59.000Z

380

The effect of high-energy electron-beam irradiation on microstructural modification of a high-speed steel roll  

SciTech Connect

The purpose of this study is to investigate the microstructural modification in a high-speed steel (HSS) roll irradiated with an accelerated high-energy electron beam. The HSS roll samples were irradiated at the beam travel speeds of 2.5 to 25 mm/s using an electron accelerator (1.4 MeV). The microstructure was examined with a scanning electron microscope (SEM) capable of in situ fracture testing and simultaneous measurement of the apparent fracture toughness. Irradiation changed the matrix phase from tempered martensite to a mixture of retained austenite and martensite. Coarse primary carbides were partially or completely dissolved, depending on the heat input. Irradiation greatly improved the fracture properties because of the presence of retained austenite, which could retard crack propagation, although hardness was decreased. Occasional interior quench cracks were found in the heat-affected region. Appropriate processing methods, such as pre- or postirradiation, were suggested. A heat transfer analysis of the irradiated surface layer was also carried out to elucidate the influence of the irradiation parameters on the microstructure.

Suh, D.; Lee, S.; Koo, Y. [Pohang Univ. of Science and Technology (Korea, Republic of); Lee, H.C. [Kangwon Industries, Ltd., Pohang (Korea, Republic of). Roll Technology Dept.

1996-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Proton irradiation energy dependence of dc and rf characteristics on InAlN/GaN high electron mobility transistors  

Science Conference Proceedings (OSTI)

The effects of proton irradiation energy on dc and rf characteristics of InAlN/GaN high electron mobility transistors (HEMTs) were investigated. A fixed proton dose of 51015 cm2 with 5, 10, and 15 MeV irradiation energies was used in this study. For the dc characteristics, degradation was observed for sheet resistance, transfer resistance, contact resistivity, saturation drain current, maximum transconductance, reverse-bias gate leakage current, and sub-threshold drain leakage current for all the irradiated HEMTs; however, the degree of the degradation was decreased as the irradiation energy increased. Similar trends were obtained for the rf performance of the devices, with 10% degradation of the unity gain cut-off frequency (fT) and maximum oscillation frequency ( fmax) for the HEMTs irradiated with 15 MeV protons but 30% for 5 MeV proton irradiation. The carrier removal rate was in the range 0.66 1.24 cm1 over the range of proton energies investigated

Lo, C. F. [University of Florida; Liu, L. [University of Florida, Gainesville; Ren, F. [University of Florida; Pearton, S. J. [University of Florida; Gila, Brent P. [University of Florida, Gainesville; Kim, H.-Y. [Korea University; Kim, J. [Korea University; Laboutin, O. [Kopin Corporation, Taunton, MA; Cao, Yu [Kopin Corporation, Taunton, MA; Johnson, Wayne J. [Kopin Corporation, Taunton, MA; Kravchenko, Ivan I [ORNL

2012-01-01T23:59:59.000Z

382

Observation of differences between low-energy electron- and positron-diffraction structural determinations of the cleavage faces of CdSe  

Science Conference Proceedings (OSTI)

Low-energy positron diffraction (LEPD) is used in conjunction with low-energy electron diffraction (LEED) to determine the relaxed atomic geometries of the CdSe cleavage surfaces. The LEPD analyses yield optimal fits at smaller top-layer perpendicular relaxations than LEED for both cleavage faces, and significantly better agreement between theoretical and experimental intensity profiles.

Horsky, T.N.; Brandes, G.R.; Canter, K.F.; Duke, C.B.; Horng, S.F.; Kahn, A.; Lessor, D.L.; Mills A.P. Jr.; Paton, A.; Stevens, K.; and others

1989-04-17T23:59:59.000Z

383

All-optical Time-resolved Measurement of Laser Energy Modulation in a Relativistic Electron Beam  

Science Conference Proceedings (OSTI)

Hamiltonian light-front theory has been proposed as a promising method for solving bound states problems in quantum field theory a long time ago, see, e.g., the review article[1] for its various advantages compared to the traditional instant-form theories. Recently the Basis Light-Front Quantization (BLFQ) approach [2, 3] has been developed as a nonperturbative approach to solve Hamiltonian light-front quantum field theory. Numerical efficiency is a key advantage of this approach. The basic idea of BLFQ is to represent the theory in an optimal basis which respects many symmetries of the theory and thus minimizes the dimensionality of the Hamiltonian for a fixed precision. Specifically, the BLFQ approach employs a plane wave basis in the light-front longitudinal direction and a 2D harmonic oscillator basis in the transverse directions. In previous work [3] this approach has been applied to evaluate the anomalous magnetic moment of electrons which are confined in an external trap with an extrapolation to the zero trap limit. In this work we extend and improve this approach in several aspects including the direct evaluation of a free electron system. This article is organized as follows: In Sec. 2 we discuss the key extensions and improvements made in this work over Ref [3]; in Sec. 3 we present the numerical results for the electron anomalous magnetic moment evaluated in different harmonic oscillator bases and compare to the perturbation theory result. Finally we conclude and give an outline for future works in Sec. 4.

Xiang, D.; Colby, E.; Dunning, M.; Gilevich, S.; Hast, C.; Jobe, K.; McCormick, D.; Nelson, J.; Raubenheimer, T.O.; Soong, K.; Stupakov, G.; Szalata, Z.; Walz, D.; Weathersby, S.; Woodley, M.; /SLAC

2012-02-15T23:59:59.000Z

384

Electron-beam-controlled gas lasers: discussion from the engineering viewpoint. Part II. Problems in the electrical design of very high energy systems  

SciTech Connect

Some problem areas in the design of very-high-energy electronbeam- controlled short-pulse gas lasers are discussed. One of the prime areas of interest is the high-voltage pulse generators for driving the electron gun and gas pumping. The use of pulse-forming networks for improving energy-transfer efficiency is discussed. The use of thermionic cathode devices will require a large ac power installation. The properties of alternate electron sources (cold cathode and plasma cathode devices) are reviewed. The impact of laser beam energy density limitations on system geometry and electrical design are discussed last. (auth)

Riepe, K.B.; Stapleton, R.E.

1973-01-01T23:59:59.000Z

385

Effect of electron energy distribution functions on plasma generated vacuum ultraviolet in a diffusion plasma excited by a microwave surface wave  

Science Conference Proceedings (OSTI)

Plasma generated vacuum ultraviolet (VUV) in diffusion plasma excited by a microwave surface wave has been studied by using dielectric-based VUV sensors. Evolution of plasma VUV in the diffusion plasma as a function of the distance from the power coupling surface is investigated. Experimental results have indicated that the energy and spatial distributions of plasma VUV are mainly controlled by the energy distribution functions of the plasma electrons, i.e., electron energy distribution functions (EEDFs). The study implies that by designing EEDF of plasma, one could be able to tailor plasma VUV in different applications such as in dielectric etching or photo resist smoothing.

Zhao, J. P.; Chen, L.; Funk, M.; Sundararajan, R. [Austin Plasma Laboratory, Tokyo Electron America, Inc., Austin, Texas 78741 (United States); Nozawa, T. [Tokyo Electron Limited, TEL Technology Center Sendai, 2-1 Osawa 3-chome, Izumi-ku, Sendai 981-3137 (Japan); Samukawa, S. [Institute of Fluid Science, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577 (Japan)

2013-07-15T23:59:59.000Z

386

Determination of energy scales in few-electron double quantum dots  

SciTech Connect

The capacitive couplings between gate-defined quantum dots and their gates vary considerably as a function of applied gate voltages. The conversion between gate voltages and the relevant energy scales is usually performed in a regime of rather symmetric dot-lead tunnel couplings strong enough to allow direct transport measurements. Unfortunately, this standard procedure fails for weak and possibly asymmetric tunnel couplings, often the case in realistic devices. We have developed methods to determine the gate voltage to energy conversion accurately in the different regimes of dot-lead tunnel couplings and demonstrate strong variations of the conversion factors. Our concepts can easily be extended to triple quantum dots or even larger arrays.

Taubert, D.; Ludwig, S. [Center for NanoScience and Fakultaet fuer Physik, Ludwig-Maximilians-Universitaet Muenchen, Geschwister-Scholl-Platz 1, D-80539 Muenchen (Germany); Schuh, D. [Institut fuer Experimentelle Physik, Universitaet Regensburg, D-93040 Regensburg (Germany); Wegscheider, W. [Laboratory for Solid State Physics, ETH Zuerich, CH-8093 Zuerich (Switzerland)

2011-12-15T23:59:59.000Z

387

Single electron beam rf feedback free electron laser  

DOE Patents (OSTI)

A free electron laser system and electron beam system for a free electron laser which uses rf feedback to enhance efficiency are described. Rf energy is extracted from a single electron beam by decelerating cavities and energy is returned to accelerating cavities using rf returns, such as rf waveguides, rf feedthroughs, resonant feedthroughs, etc. This rf energy is added to rf klystron energy to reduce the required input energy and thereby enhance energy efficiency of the system.

Brau, C.A.; Stein, W.E.; Rockwood, S.D.

1981-02-11T23:59:59.000Z

388

Optical guided modes coupled with Cerenkov radiation excited in Si slab using angular-resolved electron energy-loss spectrum  

SciTech Connect

Retardation effects in the valence electron energy-loss spectrum (EELS) of a Si slab are analyzed by angular-resolved EELS. The dispersion curves of the valence spectra excited in a slab are directly observed from a specimen area with several different thicknesses and are interpreted by performing a calculation of the dispersion relation using Kroeger's formula. The dispersion curves observed below about 3 eV are attributed to guided modes coupled with Cerenkov radiation (CR). The coupling between guided modes and CR is found to be dependent on the sample thickness (t). For the sample with t > 150 nm, the intensity of the guided modes increased linearly with thickness, revealing the coupling with CR. For t < 150 nm, however, the intensity of the guided modes rapidly decreased due to a diminished coupling with CR, resulting from the thickness-dependent dispersion curves of the guided modes.

Saito, H.; Kurata, H. [Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011 (Japan); Chen, C. H. [Center for condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan (China)

2013-03-21T23:59:59.000Z

389

Digital Electronics For The Versatile Array Of Neutron Detectors At Low Energies  

SciTech Connect

A {chi}{sup 2} minimization algorithm has been developed to extract sub-sampling-time information from digitized waveforms, to be used to instrument the future Versatile Array of Neutron Detectors at Low energies. The algorithm performance has been characterized with a fast Arbitrary Function Generator, obtaining time resolution better than 1 ns for signals of amplitudes between 50 mV and 1V, with negligible walk in the whole range. The proof-of-principle measurement of the beta-delayed neutron emission from {sup 89}Br indicates a resolution of 1 ns can be achieved in realistic experimental conditions.

Madurga, M.; Paulauskas, S.; Grzywacz, R.; Padgett, S. W.; Liddick, S. N. [Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States); Bardayan, D. W. [Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States); Batchelder, J. C.; Matei, C.; Peters, W. A.; Rasco, C. [Oak Ridge Associated Universities, Oak Ridge, TN 37831 (United States); Blackmon, J. C. [Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA 708034 (United States); Cizewski, J. A.; O'Malley, P. [Department of Physics and Astronomy, Rutgers University, New Brunswick, NJ 08903, US (Canada); Goans, R. E. [Oak Ridge Associated Universities, Oak Ridge, TN 37831 (United States); Department of Physics and Astronomy, University of Tennessee, Knoxville, TN 37996 (United States); Raiola, F.; Sarazin, F. [Department of Physics, Colorado School of Mines, Golden, CO 80401 (United States)

2011-06-01T23:59:59.000Z

390

Photodissociation of carbon dioxide in singlet valence electronic states. I. Six multiply intersecting ab initio potential energy surfaces  

E-Print Network (OSTI)

The global potential energy surfaces of the first six singlet electronic states of CO$_2$, 1---3$^1/!A'$ and 1---3$^1/!A"$ are constructed using high level ab initio calculations. In linear molecule, they correspond to $\\tilde{X}^1\\Sigma_g^+$, $1^1\\Delta_u$, $1^1\\Sigma_u^-$, and $1^1\\Pi_g$. The calculations accurately reproduce the known benchmarks for all states and establish missing benchmarks for future calculations. The calculated states strongly interact at avoided crossings and true intersections, both conical and glancing. Near degeneracies can be found for each pair of six states and many intersections involve more than two states. In particular, a fivefold intersection dominates the Franck-Condon zone for the ultraviolet excitation from the ground electronic state. The seam of this intersection traces out a closed loop. All states are diabatized, and a diabatic $5\\times 5$ potential matrix is constructed, which can be used in quantum mechanical calculations of the absorption spectrum of the five exci...

Grebenshchikov, Sergy Yu

2013-01-01T23:59:59.000Z

391

Interaction of Metallophthalocyanines (Mpc, M=Co, Ni) on Au(001): Ultraviolet Photoemission Spectroscopy and Low Energy Electron Diffraction Study  

Science Conference Proceedings (OSTI)

Thin films of metallophthalocyanine (MPc,M=Co,Ni) evaporated onto a '5x20' reconstructed Au(001) substrate at room temperature have been investigated by employing low energy electron diffraction (LEED) and ultraviolet photoelectron spectroscopy (UPS). The LEED images from NiPc thin films show that the overlayers are highly ordered with a square unit cell of 12.8x12.8 {angstrom}{sup 2} aligned along the {l_angle}110{r_angle} and {l_angle}1{bar 1}0{r_angle} axes of the Au(001) substrate. For CoPc, the LEED pattern reveals the superposition of multiple rotationally equivalent domains of a 12.9x12.9 {angstrom}{sup 2} square lattice which are rotated by 16{sup o} with respect to each other. The contrast between NiPc and CoPc on Au(001) is further demonstrated in the interfacial electronic structure. UPS studies of the interfacial layers of NiPc deposited on the hexagonally reconstructed gold substrate indicate that NiPc physisorbs on the gold surface as evidenced by a uniform molecular orbital (MO) shift. The CoPc MO's, on the other hand, indicates a charge transfer at the interface, evidenced by the 13a{sub 1g} MO interacting with the Au surface.

Ellis,T.; Park, K.; Ulrich, M.; Hulbert, S.; Rowe, J.

2006-01-01T23:59:59.000Z

392

Effect of a high-energy proton-irradiation dose on the electron mobility in n-Si crystals  

Science Conference Proceedings (OSTI)

n-Si single crystals produced by the floating zone method are studied. The concentration of electrons in the crystals is 6 Multiplication-Sign 10{sup 13} cm{sup -3}. The samples are irradiated with 25-MeV protons at 300 K. The irradiation dose is varied in the range (1.8-8.1) Multiplication-Sign 10{sup 12} cm{sup -2}. The measurements are carried out by means of the Hall technique in the range of temperatures T = 77-300 K. In samples irradiated with different proton doses, a sharp increase in the experimental effective Hall mobility {mu}{sub eff} or a deep minimum in the dependence {mu}{sub eff}(T) in the region of phonon scattering of electrons is observed immediately after irradiation or after aging of the samples, respectively. The observed effect is attributed to the formation of high-conductivity (metal-like) inclusions in the irradiated samples and to changes in the degree of screening of the inclusions by impurity-defect shells in relation to the irradiation dose, the time of natural aging, and the temperature of measurements. The impurity-defect shells are formed around metal-like inclusions during isochronal annealing or natural aging of the irradiated samples. It is suggested that metal-like inclusions formed in the n-Si crystals on irradiation with protons with the energy 25 MeV are atomic nanoclusters with an 80-nm radius.

Pagava, T. A., E-mail: tpagava@gtu.ge; Maisuradze, N. I.; Beridze, M. G. [Georgian Technical University, Department of Physics (Georgia)

2011-05-15T23:59:59.000Z

393

Extended electron energy loss fine structure simulation of the local boron environment in sodium aluminoborosilicate glasses containing gadolinium  

SciTech Connect

Phase separation in sodium-aluminoborosilicate glasses was systematically studied as a function of Gd2O3 concentration with transmission electron microscopy (TEM), energy dispersive x-ray spectroscopy (EDS), and electron energy loss spectroscopy (EELS) methods. Gadolinium-induced phase separation in the three systems can be consistently explained by proposing that Gd cations partition to the borate-rich environments and subsequent agglomeration of the Gd-borate moieties, or short-range ordered structural groups, in the glass. Agglomeration of the Gd-borate rich environments is further discussed within the context of excess metal oxides,[Na2O]ex or[Al2O3]ex=|Na2O - Al2O3|, and excess B2O3,[B2O3]ex, available for incorporating Gd cations. Results showed that agglomeration of the Gd-borate rich environments occurred at a much lower Gd2O3 concentration in the glass without[Na2O]ex or[Al2O3]ex and at a significantly higher Gd2O3 concentration in the glass with either[Na2O]ex or[Al2O3]ex. Assuming 1BO4 : 1Gd : 2BO3 (based on literature-reported Gd-metaborate structure) as a local Gd-borate environment in glass, we introduced the saturation index of boron, SI[B]= Gd2O3/(1/3[B2O3]ex), to examine the glass susceptibility to Gd-induced phase separation for all three alkali-aluminoborosilicate systems. While our results have provided some insight to the glass structure, they also provide insight to the mechanism by which the metal oxide is dissolved into the melt. This appears to occur predominantly through boron complexation of the metal oxide.

Qian, Morris (Charles Evans and Associates) [Charles Evans and Associates; Li, Hong (PPG Industries, Inc) [PPG Industries, Inc; Li, Liyu (BATTELLE (PACIFIC NW LAB)) [BATTELLE (PACIFIC NW LAB); Strachan, Denis M.(BATTELLE (PACIFIC NW LAB)) [BATTELLE (PACIFIC NW LAB)

2003-12-01T23:59:59.000Z

394

Reuse of Produced Water from CO2 Enhanced Oil Recovery, Coal-Bed Methane, and Mine Pool Water by Coal-Based Power Plants: ProMIS/Project No.: DE-NT0005343  

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

seyed Dastgheib seyed Dastgheib Principal Investigator Illinois State Geological Survey 615 E. Peabody Drive Champaign, Illinois 61820-6235 217-265-6274 dastgheib@isgs.uius.edu Reuse of PRoduced WateR fRom co 2 enhanced oil RecoveRy, coal-Bed methane, and mine Pool WateR By coal-Based PoWeR Plants: PRomis /PRoject no. : de-nt0005343 Background Coal-fired power plants are the second largest users of freshwater in the United States. In Illinois, the thermoelectric power sector accounts for approximately 84 percent of the estimated 14 billion gallons per day of freshwater withdrawals and one-third of the state's 1 billion gallons per day of freshwater consumption. Illinois electric power generation capacity is projected to expand 30 percent by 2030, increasing water consumption by

395

Surface Reconstruction of Hexagonal Y-doped HoMnO3 and LuMnO3 Studied using Low-energy Electron Diffraction  

Science Conference Proceedings (OSTI)

We have investigated the (0001) surfaces of several hexagonal manganite perovskites by low-energy electron diffraction (LEED) in order to determine if the surface periodicity is different from that of the bulk materials. These LEED studies were conducted using near-normal incidence geometry with a low energy electron microscope (LEEM)/LEED apparatus from room temperature to 1200 C and with an electron energy in the range of 15-50 eV. Diffraction patterns showed features of bulk-terminated periodicity as well as a 2 x 2 surface reconstruction. Possible origins for this surface reconstruction structure are discussed and comparisons are made with surface studies of other complex oxides.

Vasic, R.; Sadowski, J; Choi, Y; Zhou, H; Wiebe, C; Cheong, S; Rowe, J; Ulrich, M

2010-01-01T23:59:59.000Z

396

Catalac free electron laser  

DOE Patents (OSTI)

A catalac free electron laser using a rf linac (catalac) which acts as a catalyst to accelerate an electron beam in an initial pass through the catalac and decelerate the electron beam during a second pass through the catalac is described. During the second pass through the catalac, energy is extracted from the electron beam and transformed to energy of the accelerating fields of the catalac to increase efficiency of the device. Various embodiments disclose the use of post linacs to add electron beam energy extracted by the wiggler and the use of supplementary catalacs to extract energy at various energy peaks produced by the free electron laser wiggler to further enhance efficiency of the catalac free electron laser. The catalac free electron laser can be used in conjunction with a simple resonator, a ring resonator, or as an amplifier in conjunction with a master oscillator laser.

Brau, C.A.; Swenson, D.A.; Boyd, T.J. Jr.

1979-12-12T23:59:59.000Z

397

Catalac free electron laser  

DOE Patents (OSTI)

A catalac free electron laser using a rf linac (catalac) which acts as a catalyst to accelerate an electron beam in an initial pass through the catalac and decelerate the electron beam during a second pass through the catalac. During the second pass through the catalac, energy is extracted from the electron beam and transformed to energy of the accelerating fields of the catalac to increase efficiency of the device. Various embodiments disclose the use of post linacs to add electron beam energy extracted by the wiggler and the use of supplementary catalacs to extract energy at various energy peaks produced by the free electron laser wiggler to further enhance efficiency of the catalac free electron laser. The catalac free electron laser can be used in conjunction with a simple resonator, a ring resonator or as an amplifier in conjunction with a master oscillator laser.

Brau, Charles A. (Los Alamos, NM); Swenson, Donald A. (Los Alamos, NM); Boyd, Jr., Thomas J. (Los Alamos, NM)

1982-01-01T23:59:59.000Z

398

Electron bunch energy and phase feed-forward stabilization system for the Mark V RF-linac free-electron laser  

SciTech Connect

An amplitude and phase compensation system has been developed and tested at the University of Hawai'i for the optimization of the RF drive system to the Mark V free-electron laser. Temporal uniformity of the RF drive is essential to the generation of an electron beam suitable for optimal free-electron laser performance and the operation of an inverse Compton scattering x-ray source. The design of the RF measurement and compensation system is described in detail and the results of RF phase compensation are presented. Performance of the free-electron laser was evaluated by comparing the measured effects of phase compensation with the results of a computer simulation. Finally, preliminary results are presented for the effects of amplitude compensation on the performance of the complete system.

Hadmack, M. R.; Kowalczyk, J. M. D.; Lienert, B. R.; Madey, J. M. J.; Szarmes, E. B. [Department of Physics and Astronomy, University of Hawai'i at Manoa, Honolulu, Hawaii 96822 (United States); Jacobson, B. T. [RadiaBeam Technologies, Santa Monica, California 90404 (United States)

2013-06-15T23:59:59.000Z

399

Electron bunch energy and phase feed-forward stabilization system for the Mark V RF-linac free-electron laser  

E-Print Network (OSTI)

An amplitude and phase compensation system has been developed and tested at the University of Hawai`i for the optimization of the RF drive system to the Mark V Free-Electron Laser. Temporal uniformity of the RF drive is essential to the generation of an electron beam suitable for optimal free-electron laser performance and the operation of an inverse Compton scattering x-ray source. The design of the RF measurement and compensation system is described in detail and the results of RF phase compensation are presented. Performance of the free-electron laser was evaluated by comparing the measured effects of phase compensation with the results of a computer simulation. Finally, preliminary results are presented for the effects of amplitude compensation on the performance of the complete system.

Hadmack, M R; Kowalczyk, J M D; Lienert, B R; Madey, J M J; Szarmes, E B

2013-01-01T23:59:59.000Z

400

Ultra-stable implanted 83Rb/83mKr electron sources for the energy scale monitoring in the KATRIN experiment  

E-Print Network (OSTI)

The KATRIN experiment aims at the direct model-independent determination of the average electron neutrino mass via the measurement of the endpoint region of the tritium beta decay spectrum. The electron spectrometer of the MAC-E filter type is used, requiring very high stability of the electric filtering potential. This work proves the feasibility of implanted 83Rb/83mKr calibration electron sources which will be utilised in the additional monitor spectrometer sharing the high voltage with the main spectrometer of KATRIN. The source employs conversion electrons of 83mKr which is continuously generated by 83Rb. The K-32 conversion line (kinetic energy of 17.8 keV, natural line width of 2.7 eV) is shown to fulfill the KATRIN requirement of the relative energy stability of +/-1.6 ppm/month. The sources will serve as a standard tool for continuous monitoring of KATRIN's energy scale stability with sub-ppm precision. They may also be used in other applications where the precise conversion lines can be separated from the low energy spectrum caused by the electron inelastic scattering in the substrate.

M. Zbo?il; S. Bauer; M. Beck; J. Bonn; O. Dragoun; J. Jak\\rubek; K. Johnston; A. Kovalk; E. W. Otten; K. Schlsser; M. Slezk; A. palek; T. Thmmler; D. Vnos; J. emli?ka; C. Weinheimer

2012-12-20T23:59:59.000Z

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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401

Frontiers of In Situ Transmission Electron Microscopy  

Science Conference Proceedings (OSTI)

... Direct detection cameras form electron images by directly detecting high energy electrons incident on an active pixel CMOS (complementary metal ...

2013-05-29T23:59:59.000Z

402

NIST energy related inventions: Electronic starter device for fluorescent lamps. Interim report, August--October, 1997  

SciTech Connect

From the Scope of Work document which accompanied the original proposal, three silicon devices were anticipated for development, simulation, and quality assurance fabrication. The status of these are in the same format as the Scope of Work...Attachment-A-: Task 1--design and simulation; Task 2--prototype tooling; Task 3--test engineering; Task 4--product tooling; Task 5--package tooling/manufacturing design and assembly. It is felt the program will meet it`s stated goals of producing a low cost, high performance fluorescent lamp starter which will lower the acquisition and operating cost of fluorescent technology...thus saving significant amounts of energy. The likelihood of success is even greater, now that the TN22 component has been qualified. The challenges of creating a custom ASIC, while still significant, are within the skill and expertise level or the assigned engineers.

Johnson, S.A.

1997-12-01T23:59:59.000Z

403

Electron beam device  

DOE Patents (OSTI)

This patent pertains to an electron beam device in which a hollow target is symmetrically irradiated by a high energy, pulsed electron beam about its periphery and wherein the outer portion of the target has a thickness slightly greater than required to absorb the electron beam pulse energy. (auth)

Beckner, E.H.; Clauser, M.J.

1975-08-12T23:59:59.000Z

404

Many small consumers, one growing problem: Achieving energy savings for electronic equipment operating in low power modes  

E-Print Network (OSTI)

powered devices, where power consumption is critical) canpower consumption. With the advent of electronics, devices

Payne, Christopher T.; Meier, Alan K.

2004-01-01T23:59:59.000Z

405

Polarization effects in low-energy electron-CH sub 4 elastic collisions in an exact exchange treatment  

Science Conference Proceedings (OSTI)

We have investigated the polarization effects in very-low-energy (below 1 eV) electron- CH{sub 4} collisions in an exact-exchange treatment. The two models of the parameter-free polarization potential are employed; one, the {ital V}{sub pol}{sup JT} potential, introduced by Jain and Thompson (J. Phys. B 15, L631 (1982)), is based on an approximate polarized-orbital method, and two, the correlation-polarization potential {ital V}{sub pol}{sup CP}, first proposed by O'Connel and Lane (Phys. Rev. A 27, 1893 (1983)), is given as a simple analytic form in terms of the charge density of the target. In this rather very low-energy region, the polarization effects play a decisive role, particularly in creating structure in the differential cross section (DCS) and producing the Ramsauer-Townsend minimum in the total cross section. Our DCS at 0.2, 0.4, and 0.6 eV are compared with recent measurements. We found that a local parameter-free approximation for the polarization potential is quite successful if it is determined under the polarized-orbital-type technique rather than based on the correlation-polarization approach.

Jain, A.; Weatherford, C.A. (Department of Physics, Box 981, Florida A M University, Tallahassee, Florida 32307 (USA)); Thompson, D.G.; McNaughten, P. (Department of Applied Mathematics and Theoretical Physics The Queen's University, Belfast, BT7 1NN, Northern (Ireland))

1989-12-01T23:59:59.000Z

406

Effect of high-energy electron irradiation in an electron microscope column on fluorides of alkaline earth elements (CaF{sub 2}, SrF{sub 2}, and BaF{sub 2})  

SciTech Connect

The effect of high-energy (150 eV) electron irradiation in an electron microscope column on crystals of fluorides of alkaline earth elements CaF{sub 2}, SrF{sub 2}, and BaF{sub 2} is studied. During structural investigations by electron diffraction and electron microscopy, the electron irradiation causes chemical changes in MF{sub 2} crystals such as the desorption of fluorine and the accumulation of oxygen in the irradiated area with the formation of oxide MO. The fluorine desorption rate increases significantly when the electron-beam density exceeds the threshold value of {approx}2 Multiplication-Sign 10{sup 3} pA/cm{sup 2}). In BaF{sub 2} samples, the transformation of BaO into Ba(OH){sub 2} was observed when irradiation stopped. The renewal of irradiation is accompanied by the inverse transformation of Ba(OH){sub 2} into BaO. In the initial stage of irradiation of all MF{sub 2} compounds, the oxide phase is in the single-crystal state with a lattice highly matched with the MF{sub 2} matrix. When the irradiation dose is increased, the oxide phase passes to the polycrystalline phase. Gaseous products of MF{sub 2} destruction (in the form of bubbles several nanometers in diameter) form a rectangular array with a period of {approx}20 nm in the sample.

Nikolaichik, V. I. [Russian Academy of Sciences, Institute of Microelectronics Technology and High Purity Materials (Russian Federation); Sobolev, B. P., E-mail: sobolev@ns.crys.ras.ru; Zaporozhets, M. A.; Avilov, A. S. [Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)

2012-03-15T23:59:59.000Z

407

Effects of low-energy-electron-capture collisions (H/sub 0/ + c/sup n+/) on the particle and energy balance of tokamak plasmas  

DOE Green Energy (OSTI)

To illustrate the way in which atomic data provides enlightenment in the search for understandable (and thus extrapolable) confinement models, we restrict our scope to electron capture collisions involving H/sub 0/ and multiply-charged ions. Many such foreign (impurity) multiply-charged ion species are found in plasma discharges, as a result of gas recycling and damage to the surrounding surfaces by energetic plasma particles. Typical low-Z ions are carbon and oxygen; the major constituents of the stainless steel wall (Fe, Ni, Cr) are intermediate impurities, while high-Z impurities (Mo, W) enter from limiter plates which constrict the hot plasma zone to reduce direct plasma-wall contact. In this discussion, however, attention will be given only to applications of data involving H/sub 0/ + C/sup n+/ ..-->.. H/sup +/ + C/sup (n-1)+/ reactions with energy 10 eV to 2 keV. This energy range is typical of the plasma edge in present devices.

Hogan, J.T.

1981-01-01T23:59:59.000Z

408

Circular free-electron laser  

DOE Patents (OSTI)

A high efficiency, free electron laser is described utilizing a circular relativistic electron beam accelerator and a circular whispering mode optical waveguide for guiding optical energy in a circular path in the circular relativistic electron beam accelerator such that the circular relativistic electron beam and the optical energy are spatially contiguous in a resonant condition for free electron laser operation. Both a betatron and synchrotron are disclosed for use in the present invention. A free electron laser wiggler is disposed around the circular relativistic electron beam accelerator for generating a periodic magnetic field to transform energy from the circular relativistic electron beam to optical energy.

Brau, C.A.; Kurnit, N.A.; Cooper, R.K.

1982-01-26T23:59:59.000Z

409

Circular free-electron laser  

DOE Patents (OSTI)

A high efficiency, free electron laser utilizing a circular relativistic electron beam accelerator and a circular whispering mode optical waveguide for guiding optical energy in a circular path in the circular relativistic electron beam accelerator such that the circular relativistic electron beam and the optical energy are spatially contiguous in a resonant condition for free electron laser operation. Both a betatron and synchrotron are disclosed for use in the present invention. A free electron laser wiggler is disposed around the circular relativistic electron beam accelerator for generating a periodic magnetic field to transform energy from the circular relativistic electron beam to optical energy.

Brau, Charles A. (Los Alamos, NM); Kurnit, Norman A. (Santa Fe, NM); Cooper, Richard K. (Los Alamos, NM)

1984-01-01T23:59:59.000Z

410

A synchrotron self-Compton model with low energy electron cut-off for the blazar S5 0716+714  

E-Print Network (OSTI)

Rapid inverse Compton cooling sets in when the brightness temperature (T_B) of a self-absorbed synchrotron source with power-law electrons reaches ~10^{12} K. However, T_B inferred from observations of intra-day variable sources (IDV) are well above the "Compton catastrophe" limit. This can be understood if the underlying electron distribution cuts off at low energy. We approximate a low-energy cut-off with monoenergetic electrons. We compute the synchrotron self-Compton (SSC) spectrum of such distribution, and using the IDV source S5~0716+714 as an example, we compare it to the observed SED of S5~0716+714. The hard radio spectrum is well-fitted by this model, and the optical data can be accommodated by a power-law extension to the electron spectrum. We therefore examine the scenario of an injection of electrons that is a double power law in energy with a hard low-energy component that does not contribute to the synchrotron opacity. We show that the double power-law injection model is in good agreement with the observed SED of S5~0716+714. For intrinsic variability, we find that a Doppler factor of D\\geq30 can explain the observed SED provided that low-frequency (<32 GHz) emission originates from a larger region than the higher-frequency emission. To fit the entire spectrum, D\\geq65 is needed. We find the constraint imposed by induced Compton scattering at high T_B is insignificant in our model. We confirm that electron distribution with a low-energy cut-off can explain the high T_B in compact radio sources. We show that synchrotron spectrum from such distributions naturally accounts for the observed hard radio continuum with a softer optical component, without the need for an inhomogeneous source.

Olivia Tsang; J. G. Kirk

2007-10-08T23:59:59.000Z

411

Electron Photon Absorbed Dose  

Science Conference Proceedings (OSTI)

... is in progress, with preliminary results obtained for both high-energy electrons (at the ... of Clinac 12 MeV, 16 MeV and 20 MeV electron beams at ...

2013-03-13T23:59:59.000Z

412

Vehicle Technologies Office: Power Electronics  

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

Power Electronics to Power Electronics to someone by E-mail Share Vehicle Technologies Office: Power Electronics on Facebook Tweet about Vehicle Technologies Office: Power Electronics on Twitter Bookmark Vehicle Technologies Office: Power Electronics on Google Bookmark Vehicle Technologies Office: Power Electronics on Delicious Rank Vehicle Technologies Office: Power Electronics on Digg Find More places to share Vehicle Technologies Office: Power Electronics on AddThis.com... Just the Basics Hybrid & Vehicle Systems Energy Storage Advanced Power Electronics & Electrical Machines Power Electronics Electrical Machines Thermal Control & System Integration Advanced Combustion Engines Fuels & Lubricants Materials Technologies Power Electronics The power electronics activity focuses on research and development (R&D)

413

Electronic circuit for measuring series connected ...  

An electronic circuit for measuring voltage signals in an energy storage device is disclosed. The electronic circuit includes a plurality of energy storage cells ...

414

Rf Feedback free electron laser  

DOE Patents (OSTI)

A free electron laser system and electron beam system for a free electron laser which use rf feedback to enhance efficiency. Rf energy is extracted from an electron beam by decelerating cavities and returned to accelerating cavities using rf returns such as rf waveguides, rf feedthroughs, etc. This rf energy is added to rf klystron energy to lower the required input energy and thereby enhance energy efficiency of the system.

Brau, Charles A. (Los Alamos, NM); Swenson, Donald A. (Los Alamos, NM); Boyd, Jr., Thomas J. (Los Alamos, NM)

1981-01-01T23:59:59.000Z

415

Rf feedback free electron laser  

DOE Patents (OSTI)

A free electron laser system and electron beam system for a free electron laser are provided which use rf feedback to enhance efficiency. Rf energy is extracted from an electron beam by decelerating cavities and returned to accelerating cavities using rf returns such as rf waveguides, rf feedthroughs, etc. This rf energy is added to rf klystron energy to lower the required input energy and thereby enhance energy efficiency of the system.

Brau, C.A.; Swenson, D.A.; Boyd, T.J. Jr.

1979-11-02T23:59:59.000Z

416

Observation of Negative Ion Resonances in Amorphous Ice via Low-Energy (5{endash}40 eV) Electron-Stimulated Production of Molecular Hydrogen  

DOE Green Energy (OSTI)

The {ital D}{sub 2}({sup 1}{Sigma}{sup +}{sub {ital g}}, {ital v}=0{endash}2, {ital J}=0{endash}2) desorbates produced during low-energy (5{endash}40 eV) electron-beam irradiation of amorphous D{sub 2}O ice were monitored using resonance-enhanced laser ionization spectroscopy. We attribute the structure in the D{sub 2} yield as a function of the incident electron energy to core-excited negative ion resonances. These resonances, or the excited states produced after electron autodetachment, decay via molecular elimination to yield {ital D}{sub 2}({sup 1}{Sigma}{sup +}{sub {ital g}}) directly. D{sub 2} is observed with {ital v}=0 or 2 but not {ital v}=1, suggesting a symmetry propensity in the excitation or decay of the resonances. {copyright} {ital 1996 The American Physical Society.}

Kimmel, G.A.; Orlando, T.M. [Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States)] [Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352 (United States)

1996-11-01T23:59:59.000Z

417

Structure of the -Al2O3,,0001... surface from low-energy electron diffraction: Al termination and evidence for anomalously large thermal vibrations  

E-Print Network (OSTI)

Structure of the -Al2O3,,0001... surface from low-energy electron diffraction: Al termination structure of -Al2O3(0001). Sapphire surfaces are prepared in three different ways, and the diffraction, the clearly favored structure has a single Al layer termination and a large first interlayer contraction

Soares, Edmar Avellar

418

Electronic Nanodevices Laboratory  

Science Conference Proceedings (OSTI)

... such as charge and energy transfer occur at ... screened for their potential integration into electronic ... of electrical transport processes in such systems. ...

2010-10-05T23:59:59.000Z

419

ELECTRONS IN NONPOLAR LIQUIDS.  

Science Conference Proceedings (OSTI)

Excess electrons can be introduced into liquids by absorption of high energy radiation, by photoionization, or by photoinjection from metal surfaces. The electron's chemical and physical properties can then be measured, but this requires that the electrons remain free. That is, the liquid must be sufficiently free of electron attaching impurities for these studies. The drift mobility as well as other transport properties of the electron are discussed here as well as electron reactions, free-ion yields and energy levels, Ionization processes typically produce electrons with excess kinetic energy. In liquids during thermalization, where this excess energy is lost to bath molecules, the electrons travel some distance from their geminate positive ions. In general the electrons at this point are still within the coulombic field of their geminate ions and a large fraction of the electrons recombine. However, some electrons escape recombination and the yield that escapes to become free electrons and ions is termed G{sub fi}. Reported values of G{sub fi} for molecular liquids range from 0.05 to 1.1 per 100 eV of energy absorbed. The reasons for this 20-fold range of yields are discussed here.

HOLROYD,R.A.

2002-10-22T23:59:59.000Z

420

Matter & Energy Electronics  

E-Print Network (OSTI)

and workers who handle chemicals have no good equivalent to monitor their exposure to potentially toxic of Illinois) Smart Toxic Gas Monitor Plug/Play sensor 10' extender cable NH3, CO, CL2, H2S, PH3, SO2, AsH3 www.Polyera.com Innovations in Action Advanced Cooling Technologies, Inc. ISO Cert. Heat Pipe Manufacturer www.1-ACT

Suslick, Kenneth S.

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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421

Surface structures from low energy electron diffraction: Atoms, small molecules and an ordered ice film on metal surfaces  

SciTech Connect

We investigated the surface bonding of various adsorbates (0, S, C{sub 2}H{sub 3} and NO) along with the resulting relaxation of the Pt(111) surface using low energy electron diffiraction (LEED). LEED experiments have been performed on these ordered overlayers along with theoretical structural analysis using automated tensor LEED (ATLEED). The resulting surface structures of these ordered overlayers exhibit similar adsorbate-induced relaxations. In all cases the adsorbate occupies the fcc hollow site and induces an approximately 0.1 A buckling of the metal surface. The three metal atoms directly bonded to the adsorbate are ``pulled`` out of the surface and the metal atom that is not bound to the adsorbate is `pushed`` inward. In order to understand the reliability of such details, we have carried out a comprehensive study of various non-structural parameters used in a LEED computation. We also studied the adsorption of water on the Pt(lll) surface. We ordered an ultra thin ice film on this surface. The film`s surface is found to be the (0001) face of hexagonal ice. This surface is apparently terminated by a full-bilayer, in which the uppermost water molecules have large vibrational amplitudes even at temperatures as low as 90 K. We examined two other metal surfaces besides Pt(111): Ni(111) and Fe(lll). On Ni(111), we have studied the surface under a high coverage of NO. On both Ni(111) and Pt(111) NO molecules occupy the hollow sites and the N-0 bond distances are practically identical. The challenging sample preparation of an Fe(111) surface has been investigated and a successful procedure has been obtained. The small interlayer spacing found on Fe(111) required special treatment in the LEED calculations. A new ATLEED program has been developed to handle this surface.

Materer, N.F.

1995-09-01T23:59:59.000Z

422

Measurement of the neutron leakage from a dedicated intraoperative radiation therapy electron linear accelerator and a conventional linear accelerator for 9, 12, 15(16), and 18(20) MeV electron energies  

SciTech Connect

The issue of neutron leakage has recently been raised in connection with dedicated electron-only linear accelerators used for intraoperative radiation therapy (IORT). In particular, concern has been expressed about the degree of neutron production at energies of 10 MeV and higher due to the need for additional, perhaps permanent, shielding in the room in which the device is operated. In particular, three mobile linear accelerators available commercially offer electron energies at or above the neutron threshold, one at 9 MeV, one at 10 MeV, and the third at 12 MeV. To investigate this problem, neutron leakage has been measured around the head of two types of electron accelerators at a distance of 1 m from the target at azimuthal angles of 0 deg., 45 deg., 90 deg., 135 deg., and 180 deg. The first is a dedicated electron-only (nonmobile) machine with electron energies of 6 (not used here), 9, 12, 15, and 18 MeV and the second a conventional machine with electron energies of 6 (also not used here), 9, 12, 16, and 20 MeV. Measurements were made using neutron bubble detectors and track-etch detectors. For electron beams from a conventional accelerator, the neutron leakage in the forward direction in Sv/Gy is 2.1x10{sup -5} at 12 MeV, 1.3x10{sup -4} at 16 MeV, and 4.2x10{sup -4} at 20 MeV, assuming a quality factor (RBE) of 10. For azimuthal angles >0 deg., the leakage is almost angle independent [2x10{sup -6} at 12 MeV; (0.7-1.6)x10{sup -5} at 16 MeV, and (1.6-2.9)x10{sup -5} at 20 MeV]. For the electron-only machine, the neutron leakage was lower than for the conventional linac, but also independent of azimuthal angle for angles >0 deg. : ([0 deg. : 7.7x10{sup -6} at 12 MeV; 3.0x10{sup -5} at 15 MeV; 1.0x10{sup -4} at 18 MeV]; [other angles: (2.6-5.9)x10{sup -7} at 12 MeV; (1.4-2.2)x10{sup -6} at 15 MeV; (2.7-4.7)x10{sup -6} at 18 MeV]). Using the upper limit of 6x10{sup -7} Sv/Gy at 12 MeV for the IORT machine for azimuthal angles >0 deg. and assuming a workload of 200 Gy/wk and an inverse square factor of 10, the neutron dose equivalent is calculated to be 0.012 mSv/wk. For the primary beam at 12 MeV (0 deg. ), the 10x higher dose would be compensated by the attenuation of a primary beam stopper in a mobile linear accelerator. These neutron radiation levels are below regulatory values (National Council on Radiation Protection and Measurements, 'Limitation of exposure to ionizing radiation', NCRP Report No. 116, NCRP Bethesda, MD, 1993)

Jaradat, Adnan K.; Biggs, Peter J. [Department of Physics, University of Massachusetts Lowell, One University Avenue, Lowell, Massachusetts 01854 (United States); Department of Radiation Oncology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts 02114 (United States)

2008-05-15T23:59:59.000Z

423

Energy Efficient Removal of Volatile Organic Compounds (VOCs) and Organic Hazardous Air Pollutants (o-HAPs) from Industrial Waste Streams by Direct Electron Oxidation  

SciTech Connect

This research program investigated and quantified the capability of direct electron beam destruction of volatile organic compounds and organic hazardous air pollutants in model industrial waste streams and calculated the energy savings that would be realized by the widespread adoption of the technology over traditional pollution control methods. Specifically, this research determined the quantity of electron beam dose required to remove 19 of the most important non-halogenated air pollutants from waste streams and constructed a technical and economic model for the implementation of the technology in key industries including petroleum refining, organic & solvent chemical production, food & beverage production, and forest & paper products manufacturing. Energy savings of 75 - 90% and green house gas reductions of 66 - 95% were calculated for the target market segments.

Testoni, A. L.

2011-10-19T23:59:59.000Z

424

Inclusion of electron correlation for the target wave function in low- to intermediate-energy e-N/sub 2/ scattering  

Science Conference Proceedings (OSTI)

In a recent calculation an exact exchange method was developed for use in the partial-differential-equation approach to electron-molecule scattering, and was applied to e-N/sub 2/ scattering in the fixed-nuclei approximation with an adiabatic polarization potential at low energies (0-10 eV). Integrated elastic cross sections were calculated and found to be lower than experiment at energies both below and above the Pi sub g resonance. It was speculated at that time that improved experimental agreement could be obtained if a correlated target representation were used in place of the uncorrelated one. This paper implements this suggestion and demonstrates the improved agreement. These calculations are also extended to higher energies (0-30 eV) so as to include the Sigma sub u resonance. Some discrepancies among the experiments and between experiment and the various calculations at very low energy (<1eV) are noted.

Weatherford, C.A.; Brown, F.B.; Temkin, A.

1987-06-01T23:59:59.000Z

425

Electron energy spectra of H{sup {minus}} autodetaching states resulting from collisions of H{sup {minus}} with He at 1 keV  

SciTech Connect

Electron energy spectra for H{sup {minus}} autodetaching states resulting from collisions H{sup {minus}} with He at 1 keV are rigorously calculated by including couplings between doubly excited states and continuum states and their interference with direct detachment processes. An energy sampling procedure, based on the Gauss quadratures, is used to discretize continuum states. The present theoretical result, for the first time, clarifies mechanisms of excitation to doubly excited states, quantitatively reproduces the experimental spectra first observed by Risley and Geballe in 1974, separates the contributions from each of three autodetaching states, and identifies the cause of the interference between autodetaching and direct-detaching excitation channels.

Kimura, M. [Argonne National Lab., IL (United States); Sato, H. [Argonne National Lab., IL (United States)]|[Rice Univ., Houston, TX (United States). Dept. of Physics; Hino, K.; Matsuzawa, M. [Univ. of Electro-Communications, Chofu, Tokyo (Japan). Dept. of Applied Physics and Chemistry

1995-06-01T23:59:59.000Z

426

DOE/EIA-0314(82) Residential Energy Consumption Survey:  

Gasoline and Diesel Fuel Update (EIA)

4(82) 4(82) Residential Energy Consumption Survey: Housing Characteri stics 1982 Published: August 1984 U-'VVv*' ^**" ^ Energy Information Administration Washington, D.C. This public ation is availa ble from the Supe rinten dent of Docu ments , U.S. Gove rnme nt Printin g Office (GPO ). Order ing inform ation and purch ase of this and other Energ y Inform ation Admi nistra tion (EIA) public ations may be obtain ed from the GPO or the ElA's Natio nal Energ y Inform ation Cente r (NEIC ). Ques tions on energ y statis tics

427

Electron: Cluster interactions  

SciTech Connect

Beam depletion spectroscopy has been used to measure absolute total inelastic electron-sodium cluster collision cross sections in the energy range from E {approximately} 0.1 to E {approximately} 6 eV. The investigation focused on the closed shell clusters Na{sub 8}, Na{sub 20}, Na{sub 40}. The measured cross sections show an increase for the lowest collision energies where electron attachment is the primary scattering channel. The electron attachment cross section can be understood in terms of Langevin scattering, connecting this measurement with the polarizability of the cluster. For energies above the dissociation energy the measured electron-cluster cross section is energy independent, thus defining an electron-cluster interaction range. This interaction range increases with the cluster size.

Scheidemann, A.A. [Washington Univ., Seattle, WA (United States). Dept. of Chemistry; Kresin, V.V. [Lawrence Livermore National Lab., CA (United States); Knight, W.D. [California Univ., Berkeley, CA (United States). Dept. of Physics

1994-02-01T23:59:59.000Z

428

Extended electron energy loss fine structure simulation of the local boron environment in sodium aluminoborosilicate glasses containing gadolinium  

SciTech Connect

Gadolinium can be dissolved in sodium-alumino-borosilicate glasses up to 47 wt% in a baseline borosilicate glass (mol%) 20 B2O3, 5 Al2O3, 60 SiO2,and 20 Na2O. Understanding of Gd dissolution in borosilicate melts is important in glass formulation optimization. Electron energy loss fine structure (ELFS) spectroscopy is chosen, which provides well resolved local atomic structure information for both amorphous and crystalline materials with high sensitivity to low Z elements such as Al, B, Na, O, and Si where the x-ray absorption fine structure (XAFS) technique faces experimental difficulty. In this study, we report our results of boron K-edge ELFS study. Two borosilicate glass samples with 30 and 47 mass% Gd2O3, B20Gd30 and B20Gd47were chosen for B K-edge ELFS study. EEL spectra were acquired on a Philips 430 TEM equipped with Gatan PEELS system 666 and EL/P 2.1 software with Custom function AcqLong. The ELFS data analysis was performed using UWELFS, UWXAFS and FEFF software. From our Gd solubility study, the local structure of Gd in the borate environment possibly resembles double chain structure found in crystalline Gd(BO2)3 as proposed by Chakraborty et al. The B/Gd ratio's in both glasses are smaller then 3, which means the excess Gd atoms in the Si-sites would be 17 and 60 mol% of the total Gd atoms, respectively according to the model, yet the local environment of borate sites saturated with Gd should be remained. To verity above hypothesis, the double chain structure model was applied to fit boron K-edge. The model was shown to well fit experimental boron K-edge EELS spectra for both glasses with some degree of distance distortion which is understandable in amorphous structure. Therefore, it is very likely that Gd stabilized in borate sites has a local structure resembling the double chain Gd(BO2)3 structure as proposed by our solubility study and literature.

Qian, Morris (Charles Evans & Associates) [Charles Evans & Associates; Li, Hong (PPG Industries, Inc) [PPG Industries, Inc; Li, Liyu (BATTELLE (PACIFIC NW LAB)) [BATTELLE (PACIFIC NW LAB); Strachan, Denis M.(BATTELLE (PACIFIC NW LAB)) [BATTELLE (PACIFIC NW LAB)

2003-10-15T23:59:59.000Z

429

Experimental investigation of the trapping and energy loss mechanisms of intense relativistic electron rings in hydrogen gas and plasma  

DOE Green Energy (OSTI)

This volume is a direct continuation of Volume 1. Included are chapters 5 and 6 which deal with the trapping and confinement of electron rings in preionized media, neutral gases, and plasma.

Smith, A.C. Jr.

1977-04-25T23:59:59.000Z

430

Nuclear-size self-energy and vacuum-polarization corrections to the bound-electron g factor  

E-Print Network (OSTI)

The finite nuclear-size effect on the leading bound-electron g factor and the one-loop QED corrections to the bound-electron g factor is investigated for the ground state of hydrogen-like ions. The calculation is performed to all orders in the nuclear binding strength parameter Z\\alpha\\ (where Z is the nuclear charge and \\alpha\\ is the fine structure constant) and for the Fermi model of the nuclear charge distribution. In the result, theoretical predictions for the isotope shift of the 1s bound-electron g factor are obtained, which can be used for the determination of the difference of nuclear charge radii from experimental values of the bound-electron g factors for different isotopes.

Yerokhin, V A; Harman, Z

2013-01-01T23:59:59.000Z

431

Electron-electron interactions in fast neutral-neutral collisions  

DOE Green Energy (OSTI)

Differential electron emission is studied for 50--500 keV H{sup +} and H atom impact on helium. Using the first Born formulation, it is shown that projectile electron-target electron interactions are expected to dominate the differential cross sections for low energy target electron emission induced by fast neutral projectile impact on any target. Measurements of the 15{degrees} electron emission were made in order to investigate this prediction. For low impact energies, a constant ratio between the hydrogen atom and proton impact cross sections was found for emitted electron velocities less than half the projectile velocity, V{sub p} But as the collision energy increased, for electron velocities less than 0.25 V{sub p}, the cross section ratio increased as the emitted electron velocity decreased. This is interpreted as a signature of projectile electron-target electron interactions becoming dominant for distant collisions between neutral particles.

DuBois, R.D. [Pacific Northwest Lab., Richland, WA (United States); Manson, S.T. [Georgia State Univ., Atlanta, GA (United States). Dept. of Physics and Astronomy

1992-11-01T23:59:59.000Z

432

Electron-electron interactions in fast neutral-neutral collisions  

DOE Green Energy (OSTI)

Differential electron emission is studied for 50--500 keV H[sup +] and H atom impact on helium. Using the first Born formulation, it is shown that projectile electron-target electron interactions are expected to dominate the differential cross sections for low energy target electron emission induced by fast neutral projectile impact on any target. Measurements of the 15[degrees] electron emission were made in order to investigate this prediction. For low impact energies, a constant ratio between the hydrogen atom and proton impact cross sections was found for emitted electron velocities less than half the projectile velocity, V[sub p] But as the collision energy increased, for electron velocities less than 0.25 V[sub p], the cross section ratio increased as the emitted electron velocity decreased. This is interpreted as a signature of projectile electron-target electron interactions becoming dominant for distant collisions between neutral particles.

DuBois, R.D. (Pacific Northwest Lab., Richland, WA (United States)); Manson, S.T. (Georgia State Univ., Atlanta, GA (United States). Dept. of Physics and Astronomy)

1992-11-01T23:59:59.000Z

433

Local field effects at Li K edges in electron energy-loss spectra of Li, Li{sub 2}O and LiF  

Science Conference Proceedings (OSTI)

Local field effects (LFEs) in low-losses of electron energy-loss spectra of Li, Li{sub 2}O, and LiF were calculated using the density functional theory under the generalized gradient approximation. By including the lithium 1s semicore state in the pseudopotentials, the amplitude of LFE was assessed all the way up to the Li K edge (from 0 to 80 eV). They are found to be much larger for semicore levels (2s of oxygen, 2s of fluorine, and 1s of lithium) than for the valence electron energy-loss region. LFEs at the Li K edge are studied in detail. In particular, for q=0 they are shown to increase with the inhomogeneities of the compounds (from Li to LiF). The influence of the magnitude and the direction of q is also presented. Both parameters have negligible effect in the case of Li metal but changes are quite substantial for Li{sub 2}O and LiF. This is in agreement with the isotropy and the delocalization of the metallic bonding as compared to the ionic one. LFEs at the Li K edge are, however, whatever the compound, much smaller than those observed at transition metal M{sub 2,3} edges situated at similar energy positions. This result can be accounted for by considering the wave functions associated with the initial and final states involved in both edges. For lithium battery materials, most often presenting a transition metal edge close to the Li K edge, these findings imply significant consequences with respect to the interpretation of their electron energy-loss spectroscopy spectra. In particular, LFE can be expected to be stronger in positive electrodes than in negative ones.

Mauchamp, V.; Moreau, P.; Ouvrard, G.; Boucher, F. [Institut des Materiaux Jean Rouxel, UMR 6502, Universite de Nantes-CNRS, 2, Rue de la Houssiniere, 44322 Nantes Cedex (France)

2008-01-15T23:59:59.000Z

434

Total electron scattering cross sections of ethane, propane, n-butane, 1,3-butadiene and butylene in the energy range 0.3 to 4.0 keV.  

E-Print Network (OSTI)

??The total electron scattering cross sections of Ethane, Propane, n-Butane, 1,3-Butadiene and Butylene were measured in the energy range 0.3 to 4.0 keV using linear (more)

Wickramarachchi, Priyangika.

2006-01-01T23:59:59.000Z

435

Electra: An Electron Beam Pumped KrF Rep-Rate Laser System for Inertial Fusion Energy  

Science Conference Proceedings (OSTI)

High Average Power Laser and Other IFE R&D / Eighteenth Topical Meeting on the Technology of Fusion Energy (Part 1)

P. M. Burns et al.

436

Electron holography  

Science Conference Proceedings (OSTI)

... An electron hologram is a fringe modulated image containing the amplitude and phase information of an electron transparent object. ...

2013-01-08T23:59:59.000Z

437

NIST: Electron-Impact Cross Section Database  

Science Conference Proceedings (OSTI)

... of molecules by electron impact. The database also includes cross sections for some atoms and energy distributions of ejected electrons for H, He ...

2011-12-09T23:59:59.000Z

438

JLAB Electron Driver Capabilities  

Science Conference Proceedings (OSTI)

Several schemes have been proposed for adding a positron beam option at the Continuous Electron Beam Facility (CEBAF) at Jefferson Laboratory (JLAB). They involve using a primary beam of electrons or gamma rays striking a target to produce a positron beam. At JLAB electron beams are produced and used in two different accelerators, CEBAF and the JLAB FEL (Free Electron Laser). Both have low emittance and energy spread. The CEBAF beam is polarized. The FEL beam is unpolarized but the injector can produce a higher current electron beam. In this paper we describe the characteristics of these beams and the parameters relevant for positron production.

Kazimi, Reza [Jefferson Lab, 12000 Jefferson Avenue, Newport News, VA 23606 (United States)

2009-09-02T23:59:59.000Z

439

Page not found | Department of Energy  

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

31 - 21540 of 28,905 results. 31 - 21540 of 28,905 results. Article Summary of Decisions- September 16, 2013 - September 20, 2013 Decisions were issued on: - Personnel Security (10 CFR Part 710) - Whistleblower Appeal (10 CFR Part 708) http://energy.gov/oha/articles/summary-decisions-september-16-2013-september-20-2013 Download Advance Patent Waiver W(A)2009-049 This is a request by SPX COOLING TECHNOLOGIESS for a DOE waiver of domestic and foreign patent rights under agreement DE-NT0005647 http://energy.gov/gc/downloads/advance-patent-waiver-wa2009-049 Article Holographic technology could increase solar efficiency The Torrance, Calif.-based company is working on a product that could help solar energy producers get both kinds of energy out of the same sunlight -- potentially increasing a system's return. Using holographic thin-film,

440

Many small consumers, one growing problem: Achieving energy savings for electronic equipment operating in low power modes  

SciTech Connect

An increasing amount of electricity is used by equipment that is neither fully ''on'' nor fully ''off.'' We call these equipment states low power modes, or ''lopomos.'' ''Standby'' and ''sleep'' are the most familiar lopomos, but some new products already have many modes. Lopomos are becoming common in household appliances, safety equipment, and miscellaneous products. Ross and Meier (2000) reports that several international studies have found standby power to be as much as 10 percent of residential energy consumption. Lopomo energy consumption is likely to continue growing rapidly as products with lopomos that use significant amounts of energy penetrate the market. Other sectors such as commercial buildings and industry also have lopomo energy use, perhaps totaling more in aggregate than that of households, but no comprehensive measurements have been made. In this paper, we propose a research agenda for study of lopomo energy consumption. This agenda has been developed with input from over 200 interested parties. Overall, there is consensus that lopomo energy consumption is an important area for research. Many see this as a critical time for addressing lopomo issues. As equipment designs move from the binary ''on/off'' paradigm to one that encompasses multiple power modes, there is a unique opportunity to address the issue of low power mode energy consumption while technology development paths are still flexible.

Payne, Christopher T.; Meier, Alan K.

2004-08-24T23:59:59.000Z

Note: This page contains sample records for the topic "dent electron energy" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Evolution of surface morphology and electronic structure of few layer graphene after low energy Ar{sup +} ion irradiation  

Science Conference Proceedings (OSTI)

We report on co-existing dual anisotropy ripple formation, sp bonding transformation, and variation in the delocalized {pi} electron system in 1 keV Ar{sup +} ion irradiated few-layer graphene surfaces. Ripples in directions, perpendicular and parallel to the ion beam were found. The irradiation effect and the transition from the sp{sup 2}-bonding to sp{sup 3}-hybridized state were analyzed from the deconvolution of the C (1s) peak and from the shape of the derivative of the Auger transition spectra. The results suggest a plausible mechanism for tailoring of few-layer graphene electronic band structure with interlayer coupling tuned by the ion irradiation.

Al-Harthi, S. H.; Kara'a, A.; Elzain, M. [Physics Department, College of Science, Sultan Qaboos University, P.O. Box 36, Al Khod 123 (Oman); Hysen, T. [Department of Physics, Cochin University of Science and Technology, Cochin-22, Kerala (India); Department of Physics, Christian College, Chengannur, Kerala (India); Al-Hinai, A. T. [Department of Chemistry, College of Science, Sultan Qaboos University, P.O. Box 36, Al Khod 123 (Oman); Myint, M. T. Z. [Center of Excellence in Nanotechnology, Asian Institute of Technology, P.O. Box 4, Klong, Luang, Pathumthani 12120 (Thailand)

2012-11-19T23:59:59.000Z

442

Towards demonstration of electron cooling with bunched electron beam  

SciTech Connect

All electron cooling systems which were in operation so far employed electron beam generated with an electrostatic electron gun in DC operating mode, immersed in a longitudinal magnetic field. At low energies magnetic field is also being used to transport electron beam through the cooling section from the gun to the collector. At higher energies (few MeV), it was shown that one can have simpler electron beam transport without continuous magnetic field. Because of a rather weak magnetic field on the cathode and in the cooling section the latter approach was referred to as 'non-magnetized cooling', since there was no suppression of the transverse angular spread of the electron beam with the magnetic field in the cooling section. Such a cooler successfully operated at FNAL (2005-11) at electron beam energy of 4.3 MeV. Providing cooling at even higher energies would be easier with RF acceleration of electron beam, and thus using bunched electron beam for cooling. Significant efforts were devoted to explore various aspects of such bunched electron beam cooling as part of R and D of high-energy electron cooling for RHIC. However, experimental studies of such cooling are still lacking. Establishing this technique experimentally would be extremely useful for future high-energy applications. Presently there is an ongoing effort to build Proof-of-Principle (PoP) experiment of Coherent Electron Cooling (CEC) at RHIC, which promises to be superior to conventional electron cooling for high energies. Since the CEC experiment is based on bunched electron beam and it has sections where electron beam co-propagates with the ion beam at the same velocity, it also provides a unique opportunity to explore experimentally conventional electron cooling but for the first time with a bunched electron beam. As a result, it allows us to explore techniques needed for the high-energy electron cooling such as 'painting' with a short electron beam and control of ion beam distribution under cooling which is essential if cooling is provided in a collider. The software needed for comparison with the experiments is already developed as part of the previous high-energy electron cooling studies for RHIC. Since electron beam will be non-magnetized and there will be no magnetic field in the cooling section it will be also a first demonstration of fully non-magnetized cooling. The purpose of these studies was to explore whether we would be able to observe conventional electron cooling with parameters expected in the CEC PoP experiment. Below we summarize requirements on electron beam and cooling section needed for such demonstration.

Fedotov, A.

2012-01-11T23:59:59.000Z

443

Transmission Electron Microscopy (TEM)  

Science Conference Proceedings (OSTI)

...Transmission electron microcopy (TEM) has been used since the 1950s to obtain very high resolution images of microstructures. As TEMs were enhanced to include features such as digitally scanned point beams and energy dispersive x-ray detectors

444

Inclusion of electron correlation for the target wave function in low- to intermediate-energy e-N/sub 2/ scattering  

Science Conference Proceedings (OSTI)

In a recent calculation (C. A. Weatherford, K. Onda, and A. Temkin, Phys. Rev. A 31, 3620 (1985)) an exact exchange method was developed for use in the partial-differential-equation approach to electron-molecule scattering, and was applied to e-N/sub 2/ scattering in the fixed-nuclei approximation with an adiabatic polarization potential at low energies (0--10 eV). Integrated elastic cross sections were calculated and found to be lower than experiment at energies both below and above the Pi/sub g/ resonance. It was speculated at that time that improved experimental agreement could be obtained if a correlated target representation were used in place of the uncorrelated one. The present paper implements this suggestion and demonstrates the improved agreement. These calculations are also extended to higher energies (0--30 eV) so as to include the ..sigma../sub u/ resonance. Some discrepancies among the experiments and between experiment and the various calculations at very low energy (<1 eV) are noted.

Weatherford, C.A.; Brown, F.B.; Temkin, A.

1987-06-01T23:59:59.000Z

445

DE-NT0005667 Final Report  

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

the deep plumes from the gulf spill 83 Figure 27: Oxidation potential for methane and propane from the gulf spill 84 Figure 28: Gulf of Mexico sampling stations for September and...

446

Development of beam-plasma instability during the injection a low-energy electron beam into the ionospheric plasma  

SciTech Connect

Results are presented from an active experiment on the injection of charged particle beams into the ionospheric plasma. The experiment was carried out in 1992 onboard the Intercosmos-25 satellite and the Magion-3 daughter satellite (APEX). A specific feature of this experiment was that both the ion and electron beams were injected upward, in the same direction along the magnetic field. The most interesting results are the excitation of HF and VLF-LF waves and the generation of fast charged particle flows, which were recorded on both satellites.

Baranets, N. V.; Sobolev, Ya. P. [Russian Academy of Sciences, Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation (Russian Federation); Ciobanu, M. [Institute for Gravitation and Space Sciences (Romania); Vojta, J.; Smilauer, J. [Academy of Sciences of the Czech Republic, Institute of Atmospheric Physics (Czech Republic); Klos, Z.; Rothkaehl, H.; Kiraga, A. [Polish Academy of Sciences, Space Research Center (Poland); Kudela, K.; Matisin, J. [Slovak Academy of Sciences, Institute of Experimental Physics (Slovakia); Afonin, V. V. [Russian Academy of Sciences, Space Research Institute (Russian Federation); Ryabov, B. S.; Isaev, N. V. [Russian Academy of Sciences, Institute of Terrestrial Magne