Sample records for glossary plasma dictionary

  1. MSDS Glossary

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

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

  2. Module 11: Glossary and Conversions

    Broader source: Energy.gov [DOE]

    This glossary covers words, phrases, and acronyms that are used with fuel cell engines and hydrogen fueled vehicles.

  3. Dictionary of Computer Graphics

    E-Print Network [OSTI]

    Fisher, R.B.; Werghi, N.

    Fisher,R.B. Werghi,N. The CRC Dictionary of Computer Science, Engineering and Technology, CRC Press CRC Press

  4. Haitian-English Dictionary

    E-Print Network [OSTI]

    Freeman, Bryant C.; Laguerre, Jowel C.

    1996-01-01T23:59:59.000Z

    Abbreviations xxxv Haitian-English Dictionary I PREFACE Most of us experience the need from time to time to consult a dictionary, but few of us feci the inclination to read a dictionary preface. For those few who do, we hope that their curiosity..., and increasingly so, the language of politics administration, business, education, culture, elegant society, and of course religion, not only in the country "s towns hut in its capital city as well. With this ever-widening use comes the need for an ever...

  5. Haitian-English Dictionary

    E-Print Network [OSTI]

    Freeman, Bryant C.; Laguerre, Jowel C.

    2000-01-01T23:59:59.000Z

    o-n xlii Abbreviations xliii Haitian-English Dictionary 1 vii P R E F A C E Most of us experience the need from time to time to consult a dictionary, but few of us feel the inclination to read a dictionary preface. For those few who do, we hope...-widening use comes the need for an ever-widening vocabulary, re­ sulting by necessity in an ever-increasing number of terms, many of which would in all probability be unknown to the average peasant, but which are becoming, or have become, part of the language...

  6. Glossary: Carbon dioxide and climate

    SciTech Connect (OSTI)

    Not Available

    1990-08-01T23:59:59.000Z

    This Glossary contains definitions of selected CO{sub 2}-related terms as well as tables containing information related to CO{sub 2} and climate. Each term is defined with an emphasis on its relationship to CO{sub 2} and climate. Many of the definitions are then followed by a more detailed description of the term and its use. References to the literature from which the definitions were taken are listed at the end of the Glossary.

  7. SNODOG Glossary: Part 1, Introduction

    SciTech Connect (OSTI)

    Watson, C.R.

    1993-04-15T23:59:59.000Z

    The SNODOG Glossary is used by the DOE-supported life-span beagle studies to describe medical observations in a standardized format. It is an adaptation of the human medical glossary, SNOMED, which lists 107,165 terms. Each of the five laboratories, Argonne National Laboratory, the Inhalation Toxicology Research Institute, the Pacific Northwest Laboratory, the University of California at Davis, and the University of Utah, has selected an appropriate subset from the published SNOMED glossary and added beagle and research-specific terms. The National Radiobiology Archives is the coordinator of these enhancements, and periodically distributes SNODOG to the respective laboratories. Information donated by Colorado State University and Oak Ridge National Laboratory has been related to SNODOG and is available in a standardized format. This document is designed for the database manager and the scientist who will be managing or coding medical observations. It is also designed for the scientist analyzing coded information. The document includes: an overview of the NRA and the SNODOG glossary, a discussion of hardware requirements, a review of the SNODOG code structure and printed lists of the 4,770 terms which have been used at least once. Instructions for obtaining electronic copies of the glossary and for nominating additional terms are provided. This document describes the origins and structure of the SNODOG codes, explains code usage at each participating institution, and presents a usage frequency tabulation of the terms for neoplasia. A diskette or magnetic tape containing 15,641 SNODOG codes and translations is available on request.

  8. Servant dictionary battery, map

    E-Print Network [OSTI]

    Rosenthal, Jeffrey S.

    Attic *** book teachest Servant dictionary scarf [11] Winery demijohn battery, map AuntLair X Cupboard1 wireless Potting gloves aunt[3] Storage dumbwaiter wrench OldFurn parcel, med whistle Over] EastAnnex battery[4] Cupboard2 [2] mask DeadEnd rucksack AlisonWriting [16] TinyBalcony [17] gold key

  9. SIX GOING ON SEVEN Database Dictionary

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

    SIX GOING ON SEVEN Database Dictionary This database dictionary provides a brief explanation of measure naming schemes and mapping used to align the Northwest Power and...

  10. BEDES Glossary | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataEnergyDepartmentWind Siting ArticlesAugust 2014BackgroundGlossary BEDES

  11. DOE Acquisition and Project Management (APM) Glossary of Terms...

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

    DOE Acquisition and Project Management (APM) Glossary of Terms Handbook FINAL VERSION 9-30-2014 DOE Acquisition and Project Management (APM) Glossary of Terms Handbook FINAL...

  12. REDD Glossary | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere I GeothermalPotentialBiopowerSolidGenerationMethodInformationeNevada <REC Solar (Colorado) JumpGlossary

  13. Glossary

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

    F-77), and Bunker C fuel oil. Residual fuel oil is used for the production of electric power, space heating, vessel bunkering, and various industrial purposes. Retailer: A firm...

  14. Glossary

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

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

  15. Glossary

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearper Thousand Cubic Feet)2.4

  16. Glossary

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearper Thousand Cubic Feet)2.46 441 the

  17. Glossary

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearper Thousand Cubic Feet)2.46 441

  18. Dictionary Design for Distributed Compressive Sensing

    E-Print Network [OSTI]

    Chen, Wei; Wassell, Ian J.; Rodrigues, Miguel R. D.

    2014-08-20T23:59:59.000Z

    -signal correlation; and iii) inter-signal correlation. Simulation results showthat our dictionary design leads to an improved DCS reconstruction performance in com- parison to other designs. Index Terms— Compressive sensing, dictionary learning, dis- tributed... 1Dictionary Design for Distributed Compressive Sensing Wei Chen, Member, IEEE and Ian J. Wassell and Miguel R. D. Rodrigues, Member, IEEE Abstract—Conventional dictionary learning frameworks at- tempt to find a set of atoms that promote both signal...

  19. Dictionary of Upriver Halkomelem, Volume I

    E-Print Network [OSTI]

    Galloway, Brent Douglas

    2009-01-01T23:59:59.000Z

    M. 1976. Dictionary of Puget Salish. University of WashintonCl) 10) Lushootseed [Puget (Sound) Salish] (Ld) (Northern

  20. Dictionary of Upriver Halkomelem, Volume I

    E-Print Network [OSTI]

    Galloway, Brent Douglas

    2009-01-01T23:59:59.000Z

    water-lily, yellow pond lily:: qw'emétxw. English-to-Halkomelem Index to Upriver Halkomelem Dictionary lima beans

  1. State Energy Overview. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1983-10-01T23:59:59.000Z

    An overview of selected energy-related data for the United States, for each state, and for the District of Columbia is presented. Included are the quantities of energy produced and consumed, estimates of fuel reserves, the value of nonrenewable fuels produced by type, energy expenditures, and consumer prices. Also provided for each state are selected demographic and energy-related information that have been ranked and expressed as a percent of the national total. This overview provides a ready reference and a quick access to selected state energy information and state rankings for various socioeconomic and energy items. The State Energy Overview is arranged in five sections. The first section presents United States totals and an overview of state rankings. The second depicts data for the 50 states and the District of Columbia. The glossary presents definitions germane to this publication and the fourth section describes methodology and includes remarks concerning the information and methods used to estimate 1982 consumption numbers. The fifth section presents sources of data and information for this publication. A summary of each section is included.

  2. The IEA/ECBCS/Annex 40 Glossary on Commissioning

    E-Print Network [OSTI]

    Akashi, Y.; Castro, N.; Novakovic, V.; Viaud, B.; Jandon, M.

    2004-01-01T23:59:59.000Z

    International Energy Agency's (IEA) Energy Conservation in Building and Community Systems' (ECBCS) Annex 40 has developed a glossary of commissioning terms as one of the first commissioning tools produced within the annex. The glossary consists...

  3. Full Text Glossary | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO2: FinalOffers3.pdf0-45.pdf0 Budget Fossil EnergyFull Text Glossary Full Text Glossary The

  4. Shale Gas Glossary | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideo »UsageSecretary of EnergyFocus Group HSS/UnionGlossary Shale Gas Glossary

  5. Dictionary of Upriver Halkomelem, Volume I

    E-Print Network [OSTI]

    Galloway, Brent Douglas

    2009-01-01T23:59:59.000Z

    man style + cow parsnip) aspen poplar, Lombardy poplar (and perhaps trembling aspen which may have rarely occurredHalkomelem Dictionary aspen (CONT’D) "poplar", probably

  6. Annual resources report. [Glossary on technical terms

    SciTech Connect (OSTI)

    Not Available

    1982-01-01T23:59:59.000Z

    The report is separated into the following sections: acknowledgments; a table of contents; a list of tables and figures; a glossary; an introduction; an overview of the role of energy resources in New Mexico; separate sections on oil and gas, coal, electrical generation, uranium, and geothermal energy; a section on the geologic setting of oil and gas, coal, and uranium; an appendix of additional tables pertaining to oil and gas development; and a listing of selected references. The glossary is a brief listing of technical terms used in the report with simplified definitions for the reader's use. The overview contains highlights of data found in the report as well as comparisons of New Mexico's resources with those of other states and the nation. In general, each section covering a resource area describes reserves, production, prices, consumption, transportation, employment, and revenue statistics over the past ten or more years and projections to the year 2000.

  7. Monthly energy review, December 1991. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-12-23T23:59:59.000Z

    This publication contains data and informative feature articles pertaining to various energy sources. The following topics are discussed: Section 1. energy overview; section 2. energy consumption; Section 3. petroleum; Section 4. natural gas; Section 5. Oil and gas resource development; Section 6. Coal; Section 7. electricity; Section 8. nuclear energy; Section 9. energy prices and Section 10. international energy. Appendix conversion factors a glossary is included. 57 tabs.,

  8. GlossaryMechanical Properties of Materials Page 1 of 9

    E-Print Network [OSTI]

    Paxton, Anthony T.

    GlossaryMechanical Properties of Materials Page 1 of 9 Glossary of Technical terms used that they do not exhibit the same physical properties in all directions, e.g. long chain polymers which have to materials used in medical applications. The specific environment of a living body, being acceptable

  9. Electric Power Monthly, August 1990. [Glossary included

    SciTech Connect (OSTI)

    Not Available

    1990-11-29T23:59:59.000Z

    The Electric Power Monthly (EPM) presents monthly summaries of electric utility statistics at the national, Census division, and State level. The purpose of this publication is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. Data includes generation by energy source (coal, oil, gas, hydroelectric, and nuclear); generation by region; consumption of fossil fuels for power generation; sales of electric power, cost data; and unusual occurrences. A glossary is included.

  10. Glossary of Hydropower Terms | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To: CongestionDevelopment of a downholeReactors |DepartmentThe glossary of

  11. Glossary of Terms | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To: CongestionDevelopment of a downholeReactors |DepartmentThe glossaryThe

  12. PNNL: Center for Molecular Electrocatalysis - Glossary

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear Astrophysics OneOutreach Efforts Excitement Glossary

  13. Compressed Index for Dictionary Matching (extended abstract)

    E-Print Network [OSTI]

    Hon, Wing-Kai; Lam, Tak-Wah; Shah, Rahul; Siu-Lung, Tam; Vitter, Jeffrey Scott

    2008-01-01T23:59:59.000Z

    the kth- order empirical entropy of T, and ¾ is the size of the alphabet. In this paper we study compressed representation for another classical problem of string indexing, which is called dictionary matching in the literature. Precisely, a collection D...

  14. Glossary Glossary

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

    F-77), and Bunker C fuel oil. Residual fuel oil is used for the production of electric power, space heating, vessel bunkering, and various industrial purposes. Retailer: A firm...

  15. Glossary Glossary

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearper Thousand Cubic Feet)2.46 60 60

  16. Energy Generation by State and Technology (2009) - Data dictionary...

    Open Energy Info (EERE)

    Data dictionary for EIA 923 ... Download Data dictionary for EIA 923 database (used to ... URL: http:en.openei.orgdatasetsdataset03f65dc9-ddc9-41ce-806f-edafad486a1fresource...

  17. July 2005 1 Data Dictionary for

    E-Print Network [OSTI]

    Natural Heritage Program This Data Dictionary defines terms used in Potential Conservation Area (PCA protect populations or occurrences, it is necessary to delineate conservation areas. These potential existence of a particular element of natural heritage significance. Potential conservation areas may include

  18. July 2005 1 Data Dictionary for

    E-Print Network [OSTI]

    the Colorado Natural Heritage Program This Data Dictionary defines terms used in Network of Conservation Areas Conservation Areas (PCAs) that share similar species or natural communities and ecological processes. NCAs at a variety of ecological scales. Potential Conservation Area In order to successfully protect populations

  19. Production of an English/Russian glossary of terminology for nuclear materials control and accounting

    SciTech Connect (OSTI)

    Schachowskoj, S.; Smith, H.A. Jr.

    1995-05-01T23:59:59.000Z

    The program plans for Former Soviet Union National Nuclear Materials Control and Accounting (MC and A) Systems Enhancements call for the development of an English/Russian Glossary of MC and A terminology. This glossary was envisioned as an outgrowth of the many interactions, training sessions, and other talking and writing exercises that would transpire in the course of carrying out these programs. This report summarizes the status of the production of this glossary, the most recent copy of which is attached to this report. The glossary contains over 950 terms and acronyms associated with nuclear material control and accounting for safeguards and nonproliferation. This document is organized as follows: English/Russian glossary of terms and acronyms; Russian/English glossary of terms and acronyms; English/Russian glossary of acronyms; and Russian/English glossary of acronyms.

  20. Microsoft Word - GNEP Website Glossary 2006-02-03_no_links.doc...

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

    Glossary 2006-02-03nolinks.doc More Documents & Publications GNEP Glossary Lesson 5 - Fission and Chain Reactions Generation-IV Roadmap Report of the Fuel Cycle Crosscut Group...

  1. Computer surety: computer system inspection guidance. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1981-07-01T23:59:59.000Z

    This document discusses computer surety in NRC-licensed nuclear facilities from the perspective of physical protection inspectors. It gives background information and a glossary of computer terms, along with threats and computer vulnerabilities, methods used to harden computer elements, and computer audit controls.

  2. DOE Competency Dictionary | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613PortsmouthBartlesvilleAbout »Department of Energy SafetyDOE Competency Dictionary

  3. Improved Fast Similarity Search in Dictionaries

    E-Print Network [OSTI]

    Karch, Daniel; Sanders, Peter

    2010-01-01T23:59:59.000Z

    We engineer an algorithm to solve the approximate dictionary matching problem. Given a list of words $\\mathcal{W}$, maximum distance $d$ fixed at preprocessing time and a query word $q$, we would like to retrieve all words from $\\mathcal{W}$ that can be transformed into $q$ with $d$ or less edit operations. We present data structures that support fault tolerant queries by generating an index. On top of that, we present a generalization of the method that eases memory consumption and preprocessing time significantly. At the same time, running times of queries are virtually unaffected. We are able to match in lists of hundreds of thousands of words and beyond within microseconds for reasonable distances.

  4. The semantics of Chemical Markup Language (CML): dictionaries and conventions

    E-Print Network [OSTI]

    Murray-Rust, Peter; Townsend, Joseph A; Adams, Sam; Phadungsukanan, Weerapong; Thomas, Jens

    2011-07-04T23:59:59.000Z

    of Chemistry, Lensfield Road, Cambridge CB2 1EW b Department of Chemical Engineering, Pembroke Street, Cambridge CB2 3RA c STFC Daresbury Laboratory, Daresbury Science and Innovation Campus, Warrington WA4 4AD *pm286@cam.ac.uk Abstract The semantic... scientific units. All conventions, dictionaries and dictionary elements are identifiable and addressable through unique URIs. Introduction From an early stage, Chemical Markup Language (CML) was designed so that it could accommodate an indefinitely...

  5. Glossary - U.S. Energy Information Administration (EIA)

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMFormsGasReleaseSpeechesHallNot Logged In You mustGlossary A B C D E F G

  6. Cogeneration handbook for the pulp and paper industry. [Contains glossary

    SciTech Connect (OSTI)

    Griffin, E.A.; Moore, N.L.; Fassbender, L.L.; Garrett-Price, B.A.; Fassbender, A.G.; Eakin, D.E.; Gorges, H.A.

    1984-03-01T23:59:59.000Z

    The decision of whether to cogenerate involves several considerations, including technical, economic, environmental, legal, and regulatory issues. Each of these issues is addressed separately in this handbook. In addition, a chapter is included on preparing a three-phase work statement, which is needed to guide the design of a cogeneration system. In addition, an annotated bibliography and a glossary of terminology are provided. Appendix A provides an energy-use profile of the pulp and paper industry. Appendices B and O provide specific information that will be called out in subsequent chapters.

  7. Glossary of Transmission Grid Integration Terms | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetec AG Contracting Jump to:Echo,GEF Jump to:GlobalData JumpGloriaGlossary of

  8. Annex I WBS Dictionary Annex I -1

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    /DC Converters 1.5.3 DC Systems 1.5.4 Control and Protection System 1.5.5 General Power Systems and Integration 1 PROJECT 1.1 Torus Systems 1.1.0 Project Integrated Model 1.1.1 Plasma Facing Components 1.1.2 Vacuum System 1.4 Plasma Diagnostics 1.4.1 Plasma Diagnostics 1.5 Power Systems 1.5.1 AC Power Systems 1.5.2 AC

  9. Rfjgecnik.com: English|Serbo-Croatian Electronic Dictionary Faculty of Computer Science

    E-Print Network [OSTI]

    Keselj, Vlado

    Rfjgecnik.com: English|Serbo-Croatian Electronic Dictionary Vlado KE #20; SELJ Faculty of Computer-line English-Serbo-Croatian dictionaries are presented. The dictionary has been on-line for the past #12;ve- tional on-line Serbo-Croatian (SC)-English dic- tionary that has been available on the Internet since

  10. Eye Localization through Multiscale Sparse Dictionaries Fei Yang, Junzhou Huang, Peng Yang and Dimitris Metaxas

    E-Print Network [OSTI]

    Huang, Junzhou

    Eye Localization through Multiscale Sparse Dictionaries Fei Yang, Junzhou Huang, Peng Yang and Dimitris Metaxas Abstract-- This paper presents a new eye localization method via Multiscale Sparse Dictionaries (MSD). We built a pyramid of dictionaries that models context information at multiple scales. Eye

  11. Glossary on the environmental impact of a nuclear war. Technical note

    SciTech Connect (OSTI)

    Verstraete, M.M.

    1986-02-01T23:59:59.000Z

    The glossary defines a number of words, expressions, and acronyms used in the description of the impact of nuclear war on the environment, and associated issues. Selected additional words related to the problems of armaments, disarmament, and nuclear war in general were also added for convenience, although terms and expressions specifically related to the medical aspects of the problem were not included. The glossary is an enlarged and updated version of the glossary that was published as part of the SCOPE-Enuwar study on the same subject, and published by Wiley (Pittock et al., 1986).

  12. English/Russian and Russian/English glossary of physical protection terms

    SciTech Connect (OSTI)

    Soo Hoo, M.S. [ed.

    1995-07-01T23:59:59.000Z

    This glossary was prepared in fulfillment of the Glossary Preparation Task identified in the Program Plan for providing Assistance to the Russian Federation in Nuclear Material Control and Accounting and Physical Protection. The Program Plan is part of the Cooperative Threat Reduction Program as provided for under House Resolution (H.R.) 3807 (Title II, as referenced under Public Law (P.L.) 102-229. The terms in this glossary were derived from physical protection training material prepared at Sandia. The training material, and thus refinements to the glossary, has undergone years of development in presentation to both domestic and international audiences. Also, Russian Colleagues and interpreters have reviewed the translations for accuracy.

  13. Compressed Index for Dictionary Matching with One Error

    E-Print Network [OSTI]

    Hon, Wing-Kai; Lam, Tak-Wah; Shah, Rahul; Siu-Lung, Tam; Vitter, Jeffrey Scott

    2011-03-29T23:59:59.000Z

    . (1999), which requires O(n^{1+epsilon}) words of space and reports all occurrences in O(|T|loglog n + occ) time. Recently, there have been successes in compressing the dictionary matching index while keeping the query time optimal (Belazzougui, 2010, Hon...

  14. Dictionaries Using Variable-Length Keys and Data, with Applications *

    E-Print Network [OSTI]

    Blelloch, Guy E.

    (Isil- logn, 1) + Itil) and Isil is the length of bit string si. We assume a word length w > log m. We present string Isil > 1, Itil > 1 for all bit-strings si and ti. Fox' fixed-length keys the dictionary problem

  15. MOTMOT PROJECT: BUILDING A MULTILINGUAL LEXICAL SYSTEM VIA BILINGUAL DICTIONARIES

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    is the prohibitive construction cost for large amounts of data. For example, the Electronic Dictionary Research-years of work. Its selling price of approximately 84,000 is far below the actual costs of construction, costs will be given a level of quality, as well as for each contributor. Index Terms--- multilingual lexicography

  16. The New Palgrave Dictionary of Economics Online extreme poverty

    E-Print Network [OSTI]

    The New Palgrave Dictionary of Economics Online extreme poverty Jeffrey D. Sachs and Gordon C. Mc://www.dictionaryofeconomics.com/article?id=pde2008_E000293 Abstract Households living in extreme poverty face deprivations that cost millions of lives annually. Ending extreme poverty requires an understanding of poverty traps, including the effects

  17. Offline Dictionary Attack on Password Authentication Schemes using Smart Cards

    E-Print Network [OSTI]

    decades of intensive research in the security community, and the current crux lies in how to achieve truly scenario and gives rise to the strongest adversary model so far (Note that Wang's PSCAV scheme is secure poorly-chosen passwords from the notorious offline dictionary attacks and thus confirms the feasibility

  18. Interim performance criteria for photovoltaic energy systems. [Glossary included

    SciTech Connect (OSTI)

    DeBlasio, R.; Forman, S.; Hogan, S.; Nuss, G.; Post, H.; Ross, R.; Schafft, H.

    1980-12-01T23:59:59.000Z

    This document is a response to the Photovoltaic Research, Development, and Demonstration Act of 1978 (P.L. 95-590) which required the generation of performance criteria for photovoltaic energy systems. Since the document is evolutionary and will be updated, the term interim is used. More than 50 experts in the photovoltaic field have contributed in the writing and review of the 179 performance criteria listed in this document. The performance criteria address characteristics of present-day photovoltaic systems that are of interest to manufacturers, government agencies, purchasers, and all others interested in various aspects of photovoltaic system performance and safety. The performance criteria apply to the system as a whole and to its possible subsystems: array, power conditioning, monitor and control, storage, cabling, and power distribution. They are further categorized according to the following performance attributes: electrical, thermal, mechanical/structural, safety, durability/reliability, installation/operation/maintenance, and building/site. Each criterion contains a statement of expected performance (nonprescriptive), a method of evaluation, and a commentary with further information or justification. Over 50 references for background information are also given. A glossary with definitions relevant to photovoltaic systems and a section on test methods are presented in the appendices. Twenty test methods are included to measure performance characteristics of the subsystem elements. These test methods and other parts of the document will be expanded or revised as future experience and needs dictate.

  19. R{j}ecnik.com: English--Serbo-Croatian Electronic Dictionary Vlado KESELJ

    E-Print Network [OSTI]

    Keselj, Vlado

    R{j}ecnik.com: English--Serbo-Croatian Electronic Dictionary Vlado KESELJ Faculty of Computer@serbiantranslator.com Abstract The features of R{j}ecnik.com dictionary, as one of the first on-line English-Serbo-Croatian-stamped and archived as such. In this paper, we present a bilingual bidirec- tional on-line Serbo-Croatian (SC

  20. Pierre-Yves Saunier Entry for The Palgrave Dictionary of Transnational History (2009)

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    2009-01-01T23:59:59.000Z

    1 Pierre-Yves Saunier Entry for The Palgrave Dictionary of Transnational History (2009 Dictionary of Transnational History, Akira Iriye et Pierre-Yves Saunier (Ed.) (2009) 1047-1055" #12 to name the highways that made it possible for automobiles to connect distant parts of the United States

  1. Causality in Economics and Econometrics An Entry for the New Palgrave Dictionary of Economics

    E-Print Network [OSTI]

    Fitelson, Branden

    Causality in Economics and Econometrics An Entry for the New Palgrave Dictionary of Economics Kevin;Causality in Economics and Econometrics K.D. Hoover 9 June 2006 Abstract of Causality in Economics and Econometrics An entry for the New Palgrave Dictionary of Economics. Traces the history of causality

  2. Robot Glossary This appendix section briefly describes each of the robot projects discussed in this thesis.

    E-Print Network [OSTI]

    discussed in this thesis. The glossary is organized in alphabetical order by the robot's name. Baygon Palmer and is pictured on page 80. Blind The second robot of the David Hogg/Katie Lilienkamp team, Blind. Blind exploited the fact that the initial position of the puck was a known distance from the initial

  3. Glossary of CERCLA, RCRA and TSCA related terms and acronyms. Environmental Guidance

    SciTech Connect (OSTI)

    Not Available

    1993-10-01T23:59:59.000Z

    This glossary contains CERCLA, RCRA and TSCA related terms that are most often encountered in the US Department of Energy (DOE) Environmental Restoration and Emergency Preparedness activities. Detailed definitions are included for key terms. The CERCLA definitions included in this glossary are taken from the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA), as amended and related federal rulemakings. The RCRA definitions included in this glossary are taken from the Resource Conservation and Recovery Act (RCRA) and related federal rulemakings. The TSCA definitions included in this glossary are taken from the Toxic Substances and Control Act (TSCA) and related federal rulemakings. Definitions related to TSCA are limited to those sections in the statute and regulations concerning PCBs and asbestos.Other sources for definitions include additional federal rulemakings, assorted guidance documents prepared by the US Environmental Protection Agency (EPA), guidance and informational documents prepared by the US Department of Energy (DOE), and DOE Orders. The source of each term is noted beside the term. Terms presented in this document reflect revised and new definitions published before July 1, 1993.

  4. California ISO Glossary CAL I F O R N IA I S O

    E-Print Network [OSTI]

    California ISO Glossary CAL I F O R N IA I S O A watt is a measure of electricity. If you have 10 under less pressure for delivery through the straws. The ISO's job is to make sure that in the high; the ISO refers to utilities like PG&E as "load-serving entities" because that's what they do, they serve

  5. Tank Characterization Database (TCD) Data Dictionary: Version 4.0

    SciTech Connect (OSTI)

    NONE

    1996-04-01T23:59:59.000Z

    This document is the data dictionary for the tank characterization database (TCD) system and contains information on the data model and SYBASE{reg_sign} database structure. The first two parts of this document are subject areas based on the two different areas of the (TCD) database: sample analysis and waste inventory. Within each subject area is an alphabetical list of all the database tables contained in the subject area. Within each table defintiion is a brief description of the table and alist of field names and attributes. The third part, Field Descriptions, lists all field names in the data base alphabetically.

  6. Glossary of Terms Used in DOE NEPA Documents | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To: CongestionDevelopment of a downholeReactors |DepartmentThe glossary

  7. COCS GLOSSARY

    National Nuclear Security Administration (NNSA)

    and sanitary systems. Include the following job titles: sanitary engineer and transportation engineer. Do not include occupations concerned with the design and construction of...

  8. ARM - Glossary

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006Datastreamstwrcam40m DocumentationJanuary 9, 2009 [Events, FeatureListGeneral Changes in

  9. Manufacturing Glossary

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40 Buildingto China (Million Cubic Feet) 3 00.0 0.0 0.0 0.0 0.0 0.0 S ˆ0.Energy

  10. COCS GLOSSARY

    National Nuclear Security Administration (NNSA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA Approved:AdministrationAnalysisDarby/%2AO 474.2 Chg U.S. S p e c t eCHAPTERm

  11. Activity regulation for building dictionaries on an on-line collaborative platform

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Activity regulation for building dictionaries on an on-line collaborative platform Christophe.Mangeot@univ-savoie.fr Abstract--This paper discusses automatic regulation in par- ticipative Web systems. We present a generic-based system (TBS) called CARTE (Collec- tion, activity Analysis and Regulation based on Traces Enriched

  12. COUPLED DICTIONARY TRAINING FOR EXEMPLAR-BASED SPEECH ENHANCEMENT Deepak Baby Tuomas Virtanen

    E-Print Network [OSTI]

    Virtanen, Tuomas

    COUPLED DICTIONARY TRAINING FOR EXEMPLAR-BASED SPEECH ENHANCEMENT Deepak Baby Tuomas Virtanen Tom.Barker}@tut.fi ABSTRACT In exemplar-based speech enhancement systems, lower dimen- sional features are preferred over of modulation envelope features for the exemplar-based speech enhancement. Index Terms-- Non-negative matrix

  13. CONTENT-ADAPTIVE SPEECH ENHANCEMENT BY A SPARSELY-ACTIVATED DICTIONARY PLUS LOW RANK DECOMPOSITION

    E-Print Network [OSTI]

    Ellis, Dan

    CONTENT-ADAPTIVE SPEECH ENHANCEMENT BY A SPARSELY-ACTIVATED DICTIONARY PLUS LOW RANK DECOMPOSITION.papadopoulos[at]lss.supelec.fr dpwe[at]ee.columbia.edu ABSTRACT One powerful approach to speech enhancement employs strong models, we proposed a speech enhancement model that decomposes the spectrogram into sparse activation

  14. Speech enhancement by low-rank and convolutive dictionary spectrogram decomposition

    E-Print Network [OSTI]

    Ellis, Dan

    Speech enhancement by low-rank and convolutive dictionary spectrogram decomposition Zhuo Chen1 Computer Science Institute, Berkeley, CA, USA zc2204@columbia.edu Abstract A successful speech enhancement, performance will suffer. In previous work, we proposed a speech enhance- ment framework based on decomposing

  15. Secure Communication and Authentication Against Off-line Dictionary Attacks in Smart Grid Systems

    E-Print Network [OSTI]

    Wang, Yongge

    Secure Communication and Authentication Against Off-line Dictionary Attacks in Smart Grid Systems This paper studies the security requirements for remote authentication and communication in smart grid to smart grid systems. For example, in order to unlock the credentials stored in tamper

  16. An XML Markup Language Framework for Lexical Databases Environments: the Dictionary Markup Language.

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    . Unfortunately, despite numerous existing standards like TEI, MARTIF, GENELEX, EAGLES/PAROLE, etc. each resource as they are encoded in XML, consultation of other resources via remote servers through API, possibility of adding pre consultation of the database via client API. The construction of new dictionaries can be done by a community

  17. ANALYSIS, VISUALIZATION, AND TRANSFORMATION OF AUDIO SIGNALS USING DICTIONARY-BASED METHODS

    E-Print Network [OSTI]

    California at Santa Barbara, University of

    This article provides an overview of dictionary-based meth- ods (DBMs), and reviews recent work synthesis, DBMs can be seen as the analytical counterpart to a generalized granular synthesis, where a sound is built by combining heterogeneous atoms selected from a user-defined dictio- nary. As such, DBMs provide

  18. Dual-dictionary learning-based iterative image reconstruction for spectral computed tomography application

    E-Print Network [OSTI]

    Wang, Ge

    Dual-dictionary learning-based iterative image reconstruction for spectral computed tomography-based iterative image reconstruction for spectral computed tomography application Bo Zhao1 , Huanjun Ding1 , Yang discriminating photon-counting detectors, such as cadmium­zinc­telluride (CZT), in spectral computed tomography

  19. Point and find: the intuitive user experience in accessing spatially structured dialect dictionaries

    E-Print Network [OSTI]

    Wandl-Vogt, Eveline

    2010-02-01T23:59:59.000Z

    — 35 — Point and find: the intuitive user experience in accessing spatially structured dialect dictionaries eveline wanDl-voGt Institut für Österreichische Dialekt- und Namenlexika (I DINAMLEX), Wohllebengasse 12-14/2, A – 1040 Wien..., Eveline.Wandl-Vogt@oeaw.ac.at ?lanek predstavlja dolgoro?ni projekt izdelave avstrijskega akademskega nare?nega slovarja bavarskih nare?ij v Avstriji – Wörterbuch der bairischen Mundarten in Österreich (WBÖ). Projekt DBÖ – Datenbank der bairischen...

  20. Status Report on the Creation of a Preliminary Data Model and Dictionary for a New Petrologic Database

    SciTech Connect (OSTI)

    Mackley, Rob D.; Serkowski, John A.; Last, George V.

    2008-06-30T23:59:59.000Z

    A preliminary database has been developed that will allow mineralogy and bulk-rock geochemical information to be managed under configuration control and facilitate electronic querying. The database is currently developed in Microsoft Access as a collection of tables, views, and entry forms. Each field and table has been described in a data dictionary.

  1. Top-Down Visual Saliency via Joint CRF and Dictionary Learning Jimei Yang and Ming-Hsuan Yang

    E-Print Network [OSTI]

    Yang, Ming-Hsuan

    Top-Down Visual Saliency via Joint CRF and Dictionary Learning Jimei Yang and Ming-Hsuan Yang University of California at Merced {jyang44,mhyang}@ucmerced.edu Abstract Top-down visual saliency facilities for reducing the search space. In this paper, we propose a novel top-down saliency model that jointly learns

  2. Annual Report of the EURATOM/CCFE Fusion Programme 2010/11 11 Glossary

    E-Print Network [OSTI]

    coils Cryostat Biological shield Divertor He Fuel processing plant T D+ Steam generator Turbines T Figure 11.2: Schematic of a Fusion Power Plant including the production of neutrons (n) and helium (He of a power plant. Alcator C-Mod A tokamak at MIT (Boston, USA) with diverted plasmas. One of three major

  3. Nostratic Dictionary

    E-Print Network [OSTI]

    Dolgopolsky, Aharon

    2008-05-07T23:59:59.000Z

    .} 'clear, obvious', {Wn.} 'ouvertement, publiquement', Tc B {Ad.} pa2kre '? in the open' ¶ WP II 122-3, P 1O4-5, see EI 352-3, 5 1 3 (*b?eh€- 'shine'), F II 982-4, Wn. 35O-1 (all of them do not distinguish this ? from *b?e2- 'shine, be bright'), Ad. 364... be open to discussion and doubt, and it is on the basis of a significant number of proposed roots and of their descendent counterparts that the matter must be judged. That sufficient sample is presented in the pages that follow. The matter might relate...

  4. Plasma accelerator

    DOE Patents [OSTI]

    Wang, Zhehui (Los Alamos, NM); Barnes, Cris W. (Santa Fe, NM)

    2002-01-01T23:59:59.000Z

    There has been invented an apparatus for acceleration of a plasma having coaxially positioned, constant diameter, cylindrical electrodes which are modified to converge (for a positive polarity inner electrode and a negatively charged outer electrode) at the plasma output end of the annulus between the electrodes to achieve improved particle flux per unit of power.

  5. Environmental effects of dredging: Methods for the assessment of the genotoxic effects of environmental contaminants. Glossary and references. Technical notes

    SciTech Connect (OSTI)

    Honeycutt, M.E.; Jarvis, A.S.; McFarland, V.A.

    1995-07-01T23:59:59.000Z

    This technical note is the third in a series of three that outline and describe the principal methods that have been developed to test the potential of environmental contaminants to cause mutagenic, carcinogenic, and teratogenic effects. The first in this series (EEDP-04-24) describes methods used to discern genotoxic effects at the sub cellular level, while the second (EEDP-04-25) describes methods used to discern genotoxic effects at the cellular and organ/organism level. Recent literature citations for each topic referenced in this series of technical notes are provided in this technical note, in addition to a glossary of terms. The information in these technical notes is intended to provide Corps of Engineers personnel with a working knowledge of the terminology and conceptual basis of genotoxicity testing. To develop an improved understanding of the concepts of genotoxicity, readers are encouraged to review A Primer in Genotoxicity (Jarvis, Reilly, and Lutz 1993), presented in Volume D-93-3 of the Environmental Effects of Dredging information exchange bulletin.

  6. Sulfur and ash reduction potential and selected chemical and physical properties of United States coals. [Contains glossary

    SciTech Connect (OSTI)

    Cavallaro, J.A.; Deurbrouck, A.W.; Killmeyer, R.P.; Fuchs, W. (USDOE Pittsburgh Energy Technology Center, PA (USA). Coal Preparation Div.); Jacobsen, P.S. (Burns and Roe Services Corp., Pittsburgh, PA (USA))

    1991-02-01T23:59:59.000Z

    This report presents the washability and comprehensive characterization results of 184 raw coal channel samples, including anthracite, bituminous and lignite coals, collected from the Central Region of the United States. This is the second of a three volume report on the coals of the United States. All the data are presented in six appendices. Statistical techniques and definitions are presented in Appendix A, and a glossary of terms is presented in Appendix B. The complete washability data and an in-depth characterization of each sample are presented alphabetically by state in Appendix C. In Appendix D, a statistical evaluation is given for the composited washability data, selected chemical and physical properties and washability data interpolated at various levels of Btu recovery. This presentation is shown by state, section, and region where four or more samples were collected. Appendix E presents coalbed codes and names for the Central Region coals. Graphical summations are presented by state, section and region showing the effects of crushing on impurity reductions, and the distribution of raw and clean coal samples meeting various levels of SO{sub 2} emissions. 35 figs., 5 tabs.

  7. Glossary and Acronyms SRS GLOSSARY AND ACRONYMS

    E-Print Network [OSTI]

    of neutrons by uranium, and other materials present in a nuclear reactor. An example is plutonium-239 produced The Savannah River Site Dose Reconstruction Project Phase II: Source Term Calculation and Ingestion Pathway

  8. Glossary 11 Aug 2011 GLOSSARY OF TERMS

    E-Print Network [OSTI]

    University of Technology, Sydney

    and Communication Unit MSS Manager Self-Service (Neo) NEO UTS HR/Finance System NMH Faculty of Nursing, Midwifery and People Development, HRU PDRI Plan, Do, Review, Improve (UTS quality management cycle) PEP Professional - Curtin; Uni of SA; RMIT; UTS; QUT ATO Australian Taxation Office AUQA Australian Universities Quality

  9. The U.S. national nuclear forensics library, nuclear materials information program, and data dictionary

    SciTech Connect (OSTI)

    Lamont, Stephen Philip [Los Alamos National Laboratory; Brisson, Marcia [DOE-IN; Curry, Michael [DEPT. OF STATE

    2011-02-17T23:59:59.000Z

    Nuclear forensics assessments to determine material process history requires careful comparison of sample data to both measured and modeled nuclear material characteristics. Developing centralized databases, or nuclear forensics libraries, to house this information is an important step to ensure all relevant data will be available for comparison during a nuclear forensics analysis and help expedite the assessment of material history. The approach most widely accepted by the international community at this time is the implementation of National Nuclear Forensics libraries, which would be developed and maintained by individual nations. This is an attractive alternative toan international database since it provides an understanding that each country has data on materials produced and stored within their borders, but eliminates the need to reveal any proprietary or sensitive information to other nations. To support the concept of National Nuclear Forensics libraries, the United States Department of Energy has developed a model library, based on a data dictionary, or set of parameters designed to capture all nuclear forensic relevant information about a nuclear material. Specifically, information includes material identification, collection background and current location, analytical laboratories where measurements were made, material packaging and container descriptions, physical characteristics including mass and dimensions, chemical and isotopic characteristics, particle morphology or metallurgical properties, process history including facilities, and measurement quality assurance information. While not necessarily required, it may also be valuable to store modeled data sets including reactor burn-up or enrichment cascade data for comparison. It is fully expected that only a subset of this information is available or relevant to many materials, and much of the data populating a National Nuclear Forensics library would be process analytical or material accountability measurement data as opposed to a complete forensic analysis of each material in the library.

  10. Glossary API Gravity: An

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

    Products known as No. 1, No. 2, and No. 4 diesel fuel are used in on-highway diesel engines, such as those in railroad locomotives and agricultural machinery. Products known...

  11. Glossary API Gravity: An

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

    known as No. 1, No. 2, and No. 4 fuel oils are used primarily for space heating and electric power generation. 1. No. 1 Distillate: A light petroleum distillate that can be...

  12. GLOSSARY: ARMY RANK, ACRONYMS,

    E-Print Network [OSTI]

    Kasman, Alex

    by a relentless insurgency and by a horrific expansion of sectarian violence between Sunni and Shia factions

  13. Glossary | Department of Energy

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

    Protection Agency (EPA) groundwater standards at a site regulated under the Uranium Mill Tailings Radiation Control Act (UMTRCA). Contaminant: An undesirable substance from...

  14. Glossary | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To: CongestionDevelopment of a downholeReactors |DepartmentThe

  15. Glossary | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM Flash2011-12 OPAMGeneral Guidance onGlenn PodonskyAn overview

  16. Word Pro - Glossary

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade Year-0E (2001)gasoline prices4 Oil demand expected2Wind and836chemical

  17. LCLS CDR Glossary

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 - -/e),,s - 6157Bioenergy09913 35 FEL789 X-RayC

  18. Chapter 7 - Glossary

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office511041clothAdvanced Materials Advanced. C o w l i t z C oCNMSStaffCeriumfor theChapter 3 -4-16-1 CHAPTER

  19. Glossary API Gravity: An

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearper Thousand Cubic Feet)2.46 60 60

  20. Glossary API Gravity: An

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearper Thousand Cubic Feet)2.46 60 60 5

  1. Glossary | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdf Flash2006-52.pdf0.pdfDepartmentCounselGlass Coating MakesNow Open

  2. Plasma Physics

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomassPPPOPetroleum38 (1996) A213-A225. Printed in the UK4 Plasma

  3. Anomalous radial transport in tokamak edge plasma

    E-Print Network [OSTI]

    Bodi, Vasudeva Raghavendra Kowsik

    2010-01-01T23:59:59.000Z

    Transport in tokamak plasma . . . . . . . . . . . . . . .Numerical simulations of tokamak plasma . . . . . . . . .of blobs in tokamak edge plasmas . . . . . . . . . . . . . .

  4. Plasma PhysicsPlasma Physics Atoms Beams and PlasmasAtoms Beams and Plasmas

    E-Print Network [OSTI]

    Strathclyde, University of

    of plasma research and understanding their dynamics is cutting edge topic in physics Small instabilities

  5. Plasma sweeper. [Patents

    DOE Patents [OSTI]

    Motley, R.W.; Glanz, J.

    1982-10-25T23:59:59.000Z

    A device is described for coupling RF power (a plasma sweeper) from RF power introducing means to a plasma having a magnetic field associated therewith comprises at least one electrode positioned near the plasma and near the RF power introducing means. Means are described for generating a static electric field at the electrode directed into the plasma and having a component substantially perpendicular to the plasma magnetic field such that a non-zero vector cross-product of the electric and magnetic fields exerts a force on the plasma causing the plasma to drift.

  6. The Absence of Plasma in "Spark Plasma Sintering"

    E-Print Network [OSTI]

    Hulbert, Dustin M.

    2008-01-01T23:59:59.000Z

    investigations on the spark plasma sintering/synthesisinvestigations on the spark plasma sintering/synthesisenhancement in spark-plasma sintering: Impact of high

  7. oxygen-plasma | EMSL

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

    oxygen-plasma oxygen-plasma Leads No leads are available at this time. Conversion of 1,2-Propylene Glycol on Rutile TiO2(110). Abstract: We have studied the reactions of...

  8. Thermionic energy conversion plasmas

    SciTech Connect (OSTI)

    Rasor, N.S. (Rasor Associates, Inc., Sunnyvale, CA (United States))

    1991-12-01T23:59:59.000Z

    In this paper the history, application options, and ideal basic performance of the thermionic energy converter are outlined. The basic plasma types associated with various modes of converter operation are described, with emphasis on identification and semi-quantitative characterization of the dominant physical processes and utility of each plasma type. The frontier plasma science issues in thermionic converter applications are briefly summarized.

  9. Large ELMs Triggered by MHD in JET Advanced Tokamak Plasmas: Impact on Plasmas Profiles, Plasmas Facing Components and Heating Systems

    E-Print Network [OSTI]

    Large ELMs Triggered by MHD in JET Advanced Tokamak Plasmas: Impact on Plasmas Profiles, Plasmas Facing Components and Heating Systems

  10. Plasma-Therm Workshop: Fundamentals of Plasma Processing (Etching & Deposition)

    E-Print Network [OSTI]

    Martin, Jan M.L.

    The workshop will focus on the fundamentals of plasma etching and deposition. Lectures will includePlasma-Therm Workshop: Fundamentals of Plasma Processing (Etching & Deposition) Nanofabrication an introduction to vacuum technology, the basics of plasma and plasma reactors and an overview of mechanisms

  11. Michigan Institute for Plasma Sci-

    E-Print Network [OSTI]

    Shyy, Wei

    This talk will focus on the achievements of the Drexel Plasma Institute in direct application of plasmasMichigan Institute for Plasma Sci- ence and Engi- neering Seminar Plasma Medicine: Mechanisms of Direct Non-Thermal Plasma Interaction with Living Tissue Prof. Alexander Fridman Drexel University

  12. PLASMA PHYSICS PPPL UC Davis

    E-Print Network [OSTI]

    PRINCETON PLASMA PHYSICS LABORATORY PPPL UC Davis PRINCETON PLASMA PHYSICS LABORATORY PPPL UC Davis. Domier and N.C. Luhmann, Jr. UC at Davis at Workshop on Long Time Simulations of Kinetic Plasmas April 21, 2006 Hyatt Regency, Dallas, TX #12;PRINCETON PLASMA PHYSICS LABORATORY PPPL UC Davis PRINCETON PLASMA

  13. Princeton Plasma Physics Laboratory

    SciTech Connect (OSTI)

    Not Available

    1990-01-01T23:59:59.000Z

    This report discusses the following topics: principal parameters achieved in experimental devices fiscal year 1990; tokamak fusion test reactor; compact ignition tokamak; Princeton beta experiment- modification; current drive experiment-upgrade; international collaboration; x-ray laser studies; spacecraft glow experiment; plasma processing: deposition and etching of thin films; theoretical studies; tokamak modeling; international thermonuclear experimental reactor; engineering department; project planning and safety office; quality assurance and reliability; technology transfer; administrative operations; PPPL patent invention disclosures for fiscal year 1990; graduate education; plasma physics; graduate education: plasma science and technology; science education program; and Princeton Plasma Physics Laboratory reports fiscal year 1990.

  14. BNL | ATF Plasma Diagnostics

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

    diagnostic enables measurement of plasma wakefields on the picosecond timescale using ultrafast optical probe pulses. Although in this frequency domain interferometry has yet...

  15. Measuring the plasma density of a ferroelectric plasma source in an expanding plasma

    E-Print Network [OSTI]

    Measuring the plasma density of a ferroelectric plasma source in an expanding plasma A. Dunaevsky and N. J. Fisch Princeton Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New temperature at the surface of a ferroelectric plasma source were deduced from floating probe measurements

  16. High-Energy Plasma Fusion

    E-Print Network [OSTI]

    Guruangan, Karthik

    2014-01-01T23:59:59.000Z

    Simulations of Dense Plasma Focus Z-Pinch Devices.pdfSimulations of Dense-Plasma Focus Z-Pinch Device. Physicalplasmas and dense-plasma focus (DPF) Z-Pinch devices. DPF

  17. Haitian-English Dictionary

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2010-01-01T23:59:59.000Z

    .prop.n. inhabitant of Haut- Palmiste (Tortuga Island, Dept. North-West) palmye n. [Fr.] palm tree ~ a Iwil oil palm Palo prop.n. Palau (Western Pacific) paloud, palout n. clam (seafood) palpa conj. let alone, much less; even more, all the more palpab: prdv... to another) papiydt n. fine quality of paper (used in Haiti esp. in kite-making) papdt n. doorstep, threshold; doorway; front (of house) papou adj. full-feathered (bird); in need of a haircut paprika n. paprika (cf poud piman) papsis v. to fail, flop...

  18. Haitian-English Dictionary

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2004-01-01T23:59:59.000Z

    . With this ever-widening use comes the need for an ever-widening vocabulary, resulting by necessity in an ever-increasing number of terms, many of which would in all probability be unknown to the average peasant, but which are becoming, or have become, part... of the language. Every language grows to meet the needs of its speakers, and as needs vary, terms unknown to many necessarily come into usage - but which nonetheless are authentic components of the language. Because people living in remote areas might not know...

  19. English-Haitian Dictionary

    E-Print Network [OSTI]

    Freeman, Bryant C.

    2010-01-01T23:59:59.000Z

    . aksyonnen, balanse acuity n. finis, w i kl i Acul-du-Nord (Dept. North) prop. n. Akildind inhabitant of ~ prop.n. Nddikili; f.prop.n Nddikiliz acumen n konpreyansyon, pisepsyon, ensten, finis, nen fen acupuncture n. tretman ak zepeng, akiponkti... ~ Lafrik Santral North - Lafrik (di) N6 South - Lafrik (di) Sid Sub-Sahara ~ Lafrik Nwa West- (Lafr ik) Ginen African prop.n. Afriken; /.prop.n. Afrikin; prop.adj. afriken Central - Republic Lafrik Santral South - Sidafriken African-American n...

  20. A South Efate Dictionary

    E-Print Network [OSTI]

    Thieberger, Nicholas

    -sided filefish. fumatol n. fish sp. fum ? os n. fish sp. strongskin dark coloured (Orange-lined triggerfish?). funfnoi vintr. fade, disappear. See: surfunfnoi; krakfunfnoi. funre n. ant sp. white ant, termite. See: ofet. fup ? el n. fish sp. Sand bass... Subject). aaf n. fish sp. Anthiases (small Groupers, Perchlets, Basslets, Soapfishes). Serranidae. aaf ni nariuriu n. fish sp. Cigar wrasse. Cheilio inermis. aal n. shellfish sp. kind of Turbo. Turbo chrysostomus; petholatus. aas n. coconut crab...

  1. Common Platform Enumeration: Dictionary

    E-Print Network [OSTI]

    and Christopher McCormick of Booz Allen Hamilton, Seth Hanford of Cisco Systems, Inc., Tim Keanini of n

  2. Nostratic Dictionary - Third Edition

    E-Print Network [OSTI]

    Dolgopolsky, Aharon

    2012-01-01T23:59:59.000Z

    ka4r, Tc B pa2kri {Ad.} 'clear, obvious', {Wn.} 'ouvertement, publiquement', Tc B {Ad.} pa2kre '? in the open' ¶ EI 352-3, 513 (*b?eh€- 'shine'), F II 982-4, Wn. I 35O-1 (all of them do not distinguish this ? from *b?e2- 'shine, be bright'), Ad. 364... . The controversial IE cns. cluster is still to be investigated. In one root ( [{EI} ] 'earth') it may result from metathesis (IE {EI} > ). In another case ( / ? 'yesterday') is likely to go back to N (cf. entry 6O3a 'late, evening'). 1O. According to AD LZL 364...

  3. Dictionary - Hanford Site

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

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

  4. Fundamentals of Plasma Physics

    E-Print Network [OSTI]

    Callen, James D.

    of students (from physics, engineering physics, elec- trical engineering, nuclear engineering and other un;PREFACE Plasma physics is a relatively new branch of physics that became a mature science over the last). Thus, plasma physics has developed in large part as a branch of applied or engineering physics

  5. Plasma technology directory

    SciTech Connect (OSTI)

    Ward, P.P.; Dybwad, G.L.

    1995-03-01T23:59:59.000Z

    The Plasma Technology Directory has two main goals: (1) promote, coordinate, and share plasma technology experience and equipment within the Department of Energy; and (2) facilitate technology transfer to the commercial sector where appropriate. Personnel are averaged first by Laboratory and next by technology area. The technology areas are accelerators, cleaning and etching deposition, diagnostics, and modeling.

  6. Diamagnetism of rotating plasma

    SciTech Connect (OSTI)

    Young, W. C.; Hassam, A. B.; Romero-Talamas, C. A.; Ellis, R. F.; Teodorescu, C. [IREAP, University of Maryland, College Park, Maryland 20742 (United States)

    2011-11-15T23:59:59.000Z

    Diamagnetism and magnetic measurements of a supersonically rotating plasma in a shaped magnetic field demonstrate confinement of plasma pressure along the magnetic field resulting from centrifugal force. The Grad-Shafranov equation of ideal magnetohydrodynamic force balance, including supersonic rotation, is solved to confirm that the predicted angular velocity is in agreement with spectroscopic measurements of the Doppler shifts.

  7. Plasma opening switch

    DOE Patents [OSTI]

    Savage, Mark E. (Albuquerque, NM); Mendel, Jr., Clifford W. (Albuquerque, NM)

    2001-01-01T23:59:59.000Z

    A command triggered plasma opening switch assembly using an amplification stage. The assembly surrounds a coaxial transmission line and has a main plasma opening switch (POS) close to the load and a trigger POS upstream from the main POS. The trigger POS establishes two different current pathways through the assembly depended on whether it has received a trigger current pulse. The initial pathway has both POS's with plasma between their anodes and cathodes to form a short across the transmission line and isolating the load. The final current pathway is formed when the trigger POS receives a trigger current pulse which energizes its fast coil to push the conductive plasma out from between its anode and cathode, allowing the main transmission line current to pass to the fast coil of the main POS, thus pushing its plasma out the way so as to establish a direct current pathway to the load.

  8. Plasma Diagnostics and Plasma-Surface Interactions in Inductively Coupled Plasmas

    E-Print Network [OSTI]

    Titus, Monica Joy

    2010-01-01T23:59:59.000Z

    intensities for pure Ar plasmas focus on the dominant 104.8emitted from pure A r plasmas focus on the intensities ofdissertation work focuses on plasma and wafer diagnostics as

  9. Appendix B: Glossary Appendix B: Glossary B-3

    E-Print Network [OSTI]

    Pennycook, Steve

    , or carbon, hydrogen, and chlorine, such as carbon tetrachloride, chloroform, and tetrachloroethene, temperature, period of contact, and other factors. chlorocarbons -- Compounds of carbon and chlorine

  10. Appendix B: Glossary Appendix B: Glossary B-3

    E-Print Network [OSTI]

    Pennycook, Steve

    , such as carbon tetrachloride, chloroform, and tetrachloroe factors. chlorocarbons -- Compounds of carbon and chlorine, or carbon, hydrogen, and chlorine

  11. Appendix B. Glossary Appendix B. Glossary B-3

    E-Print Network [OSTI]

    Pennycook, Steve

    , or carbon, hydrogen, and chlorine, such as carbon tetrachloride, chloroform, and tetrachloroethene, temperature, period of contact, and other factors. chlorocarbons -- Compounds of carbon and chlorine

  12. Appendix H: Glossary Appendix H: Glossary H-3

    E-Print Network [OSTI]

    Pennycook, Steve

    , hydrogen, and chlorine, such as carbon tetrachloride, chloroform, tetrachloroethene, etc. They are among, period of contact, and other factors. chlorocarbons -- Compounds of carbon and chlorine, or carbon

  13. Appendix B. Glossary Appendix B. Glossary B-3

    E-Print Network [OSTI]

    Pennycook, Steve

    , or carbon, hydrogen, and chlorine, such as carbon tetrachloride, chlorofo, temperature, period of contact, and other factors. chlorocarbons -- Compounds of carbon and chlorine

  14. Appendix B: Glossary Appendix B: Glossary B-3

    E-Print Network [OSTI]

    Pennycook, Steve

    and chlorine, or carbon, hydrogen, and chlorine, such as carbon tetrachloride, chloroform of reagent, temperature, period of contact, and other factors. chlorocarbons -- Compounds of carbon

  15. Appendix C. Glossary Appendix C. Glossary C-3

    E-Print Network [OSTI]

    Pennycook, Steve

    , or carbon, hydrogen, and chlorine, such as carbon tetrachloride, chloroform, and tetrachloroethene, temperature, period of contact, and other factors. chlorocarbons -- Compounds of carbon and chlorine

  16. Proposal for PLASMA LENS EXPERIMENT AT

    E-Print Network [OSTI]

    Proposal for PLASMA LENS EXPERIMENT AT THE FINAL FOCUS TEST BEAM April 1, 1997 THE PLASMA LENS.....................................................................................3 1.1 Plasma Focusing ......................................................................3 1.2 Previous Plasma Lens Experiments.................................................4 1.3 Plasma Lens

  17. CHAPTER 1. COLLECTIVE PLASMA PHENOMENA 1 Collective Plasma

    E-Print Network [OSTI]

    Callen, James D.

    CHAPTER 1. COLLECTIVE PLASMA PHENOMENA 1 Chapter 1 Collective Plasma Phenomena The properties of a medium are determined by the microscopic processes in it. In a plasma the microscopic processes is actually limited to a distance of order the Debye length in a plasma. On length scales longer than

  18. Measuring the Plasma Density of a Ferroelectric Plasma Source in an Expanding Plasma

    SciTech Connect (OSTI)

    A. Dunaevsky; N.J. Fisch

    2003-10-02T23:59:59.000Z

    The initial density and electron temperature at the surface of a ferroelectric plasma source were deduced from floating probe measurements in an expanding plasma. The method exploits negative charging of the floating probe capacitance by fast flows before the expanding plasma reaches the probe. The temporal profiles of the plasma density can be obtained from the voltage traces of the discharge of the charged probe capacitance by the ion current from the expanding plasma. The temporal profiles of the plasma density, at two different distances from the surface of the ferroelectric plasma source, could be further fitted by using the density profiles for the expanding plasma. This gives the initial values of the plasma density and electron temperature at the surface. The method could be useful for any pulsed discharge, which is accompanied by considerable electromagnetic noise, if the initial plasma parameters might be deduced from measurements in expanding plasma.

  19. Plasma-based accelerator structures

    SciTech Connect (OSTI)

    Schroeder, Carl B.

    1999-12-01T23:59:59.000Z

    Plasma-based accelerators have the ability to sustain extremely large accelerating gradients, with possible high-energy physics applications. This dissertation further develops the theory of plasma-based accelerators by addressing three topics: the performance of a hollow plasma channel as an accelerating structure, the generation of ultrashort electron bunches, and the propagation of laser pulses is underdense plasmas.

  20. Inductively coupled helium plasma torch

    DOE Patents [OSTI]

    Montaser, Akbar (Potomac, MD); Chan, Shi-Kit (Washington, DC); Van Hoven, Raymond L. (Alexandria, VA)

    1989-01-01T23:59:59.000Z

    An inductively coupled plasma torch including a base member, a plasma tube and a threaded insert member within the plasma tube for directing the plasma gas in a tangential flow pattern. The design of the torch eliminates the need for a separate coolant gas tube. The torch can be readily assembled and disassembled with a high degree of alignment accuracy.

  1. Monthly energy review. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1992-04-01T23:59:59.000Z

    The Monthly Energy Review is prepared by the Energy Information Administration. Statistical data and information are provided on the topics of energy consumption, petroleum, natural gas, oil and gas resource development, coal, electricity, nuclear energy, energy prices, and international energy. (VC)

  2. A Glossary of LOGO Primitives

    E-Print Network [OSTI]

    Abelson, Hal

    1974-12-01T23:59:59.000Z

    This is a brief description of the primitives in PDP 11 LOGO. It is intended to provide a quick reference for users who are already familiar with LOGO basics. For a more detailed and comprehensive description of LOGO, ...

  3. Energy Efficiency Report--Glossary

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,128 2,469DecadeOrigin State1,237ContactElectricityRegionalHome

  4. Geothermal Glossary | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy ChinaofSchaefer To: Congestion StudyForecasting.Energy InDOE Geothermalof

  5. Microsoft Word - Glossary_2014.docx

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade EnergyTennesseeYearUndergroundCubicDecadeFeet)Proved 3Adopted by

  6. Alternative Fuels Data Center: Glossary

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWP TWP RelatedCellulase C.Tier 2NorthAvailability to someoneAFDC

  7. Glossary of Nuclear Waste Terms

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC) Environmental AssessmentsGeoffrey(SC) GettingGit GitGlobal Warming andGlobus

  8. Microsoft Word - glossary.doc

    Office of Legacy Management (LM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, DisposalFourth Five-Year38 Annual04500MSE

  9. EMSL - oxygen-plasma

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

    oxygen-plasma en Conversion of 1,2-Propylene Glycol on Rutile TiO2(110). http:www.emsl.pnl.govemslwebpublicationsconversion-12-propylene-glycol-rutile-tio2110

  10. Induction plasma tube

    DOE Patents [OSTI]

    Hull, D.E.

    1982-07-02T23:59:59.000Z

    An induction plasma tube having a segmented, fluid-cooled internal radiation shield is disclosed. The individual segments are thick in cross-section such that the shield occupies a substantial fraction of the internal volume of the plasma enclosure, resulting in improved performance and higher sustainable plasma temperatures. The individual segments of the shield are preferably cooled by means of a counterflow fluid cooling system wherein each segment includes a central bore and a fluid supply tube extending into the bore. The counterflow cooling system results in improved cooling of the individual segments and also permits use of relatively larger shield segments which permit improved electromagnetic coupling between the induction coil and a plasma located inside the shield. Four embodiments of the invention, each having particular advantages, are disclosed.

  11. Induction plasma tube

    DOE Patents [OSTI]

    Hull, Donald E. (Los Alamos, NM)

    1984-01-01T23:59:59.000Z

    An induction plasma tube having a segmented, fluid-cooled internal radiation shield is disclosed. The individual segments are thick in cross-section such that the shield occupies a substantial fraction of the internal volume of the plasma enclosure, resulting in improved performance and higher sustainable plasma temperatures. The individual segments of the shield are preferably cooled by means of a counterflow fluid cooling system wherein each segment includes a central bore and a fluid supply tube extending into the bore. The counterflow cooling system results in improved cooling of the individual segments and also permits use of relatively larger shield segments which permit improved electromagnetic coupling between the induction coil and a plasma located inside the shield. Four embodiments of the invention, each having particular advantages, are disclosed.

  12. Simulation of Fusion Plasmas

    ScienceCinema (OSTI)

    Chris Holland

    2010-01-08T23:59:59.000Z

    The upcoming ITER experiment (www.iter.org) represents the next major milestone in realizing the promise of using nuclear fusion as a commercial energy source, by moving into the ?burning plasma? regime where the dominant heat source is the internal fusion reactions. As part of its support for the ITER mission, the US fusion community is actively developing validated predictive models of the behavior of magnetically confined plasmas. In this talk, I will describe how the plasma community is using the latest high performance computing facilities to develop and refine our models of the nonlinear, multiscale plasma dynamics, and how recent advances in experimental diagnostics are allowing us to directly test and validate these models at an unprecedented level.

  13. Laser Plasma Interactions

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

    processes. A typical configuration uses a low intensity laser beam (2nd, 3rd, or 4th harmonic of 1054-nm) to probe a plasma volume. The Thomson scattered light is collected by a...

  14. Accelerating Particles with Plasma

    SciTech Connect (OSTI)

    Litos, Michael; Hogan, Mark

    2014-11-05T23:59:59.000Z

    Researchers at SLAC explain how they use plasma wakefields to accelerate bunches of electrons to very high energies over only a short distance. Their experiments offer a possible path for the future of particle accelerators.

  15. Electrostatics of moving plasma

    SciTech Connect (OSTI)

    Ignatov, A. M. [Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation)] [Russian Academy of Sciences, Prokhorov General Physics Institute (Russian Federation)

    2013-07-15T23:59:59.000Z

    The stability of charge distribution over the surface of a conducting body in moving plasma is analyzed. Using a finite-width plate streamlined by a cold neutralized electron flow as an example, it is shown that an electrically neutral body can be unstable against the development of spontaneous polarization. The plasma parameters at which such instability takes place, as well as the frequency and growth rate of the fundamental mode of instability, are determined.

  16. Plasma Screen Floating Mount

    DOE Patents [OSTI]

    Eakle, Robert F. (New Ellenton, SC); Pak, Donald J. (Martine, GA)

    2004-10-26T23:59:59.000Z

    A mounting system for a flat display screen, particularly a plasma display screen, suspends the screen separately in each of the x-, y- and z-directions. A series of frames located by linear bearings and isolated by springs and dampers allows separate controlled movement in each axis. The system enables the use of relatively larger display screens in vehicles in which plasma screen are subject to damage from vibration.

  17. Plasma jet ignition device

    DOE Patents [OSTI]

    McIlwain, Michael E. (Franklin, MA); Grant, Jonathan F. (Wayland, MA); Golenko, Zsolt (North Reading, MA); Wittstein, Alan D. (Fairfield, CT)

    1985-01-15T23:59:59.000Z

    An ignition device of the plasma jet type is disclosed. The device has a cylindrical cavity formed in insulating material with an electrode at one end. The other end of the cylindrical cavity is closed by a metal plate with a small orifice in the center which plate serves as a second electrode. An arc jumping between the first electrode and the orifice plate causes the formation of a highly-ionized plasma in the cavity which is ejected through the orifice into the engine cylinder area to ignite the main fuel mixture. Two improvements are disclosed to enhance the operation of the device and the length of the plasma plume. One improvement is a metal hydride ring which is inserted in the cavity next to the first electrode. During operation, the high temperature in the cavity and the highly excited nature of the plasma breaks down the metal hydride, liberating hydrogen which acts as an additional fuel to help plasma formation. A second improvement consists of a cavity insert containing a plurality of spaced, metal rings. The rings act as secondary spark gap electrodes reducing the voltage needed to maintain the initial arc in the cavity.

  18. Plasma Astrophysics | Princeton Plasma Physics Lab

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItemResearch > TheNuclear AstrophysicsPayroll,Physics Physics An errorPlantPlasma

  19. Perturbations in a plasma

    E-Print Network [OSTI]

    Evangelos Chaliasos

    2005-10-20T23:59:59.000Z

    The perturbations of a homogeneous non-relativistic two-component plasma are studied in the Coulomb gauge. Starting from the solution found [2] of the equations of electromagnetic self consistency in a plasma [1], we add small perturbations to all quantities involved, and we enter the perturbed quantities in the equations, keeping only the first order terms in the perturbations. Because the unperturbed quantities are solutions of the equations, they cancel each other, and we are left with a set of 12 linear equations for the 12 perturbations (unknown quantities). Then we solve this set of linearized equations, in the approximation of small ratio of the masses of electrons over those of ions, and under the assumption that the plasma remains homogeneous.

  20. Nonequilibrium lighting plasmas

    SciTech Connect (OSTI)

    Dakin, J.T. (GE Lighting, Nela Park, Cleveland, OH (US))

    1991-12-01T23:59:59.000Z

    In this paper the science of a variety of devices employing nonequilibrium lighting plasmas is reviewed. The devices include the fluorescent lamp, the low-pressure sodium lamp, the neon sign, ultraviolet lamps, glow indicators, and a variety of devices used by spectroscopists, such as the hollow cathode light source. The plasma conditions in representative commercial devices are described. Recent research on the electron gas, the role of heavy particles, spatial and temporal inhomogeneities, and new electrodeless excitation schemes is reviewed. Areas of future activity are expected to be in new applications of high-frequency electronics to commercial devices, new laser-based diagnostics of plasma conditions, and more sophisticated models requiring more reliable and extensive rate coefficient data.

  1. Plasma Simulation Program

    SciTech Connect (OSTI)

    Greenwald, Martin

    2011-10-04T23:59:59.000Z

    Many others in the fusion energy and advanced scientific computing communities participated in the development of this plan. The core planning team is grateful for their important contributions. This summary is meant as a quick overview the Fusion Simulation Program's (FSP's) purpose and intentions. There are several additional documents referenced within this one and all are supplemental or flow down from this Program Plan. The overall science goal of the DOE Office of Fusion Energy Sciences (FES) Fusion Simulation Program (FSP) is to develop predictive simulation capability for magnetically confined fusion plasmas at an unprecedented level of integration and fidelity. This will directly support and enable effective U.S. participation in International Thermonuclear Experimental Reactor (ITER) research and the overall mission of delivering practical fusion energy. The FSP will address a rich set of scientific issues together with experimental programs, producing validated integrated physics results. This is very well aligned with the mission of the ITER Organization to coordinate with its members the integrated modeling and control of fusion plasmas, including benchmarking and validation activities. [1]. Initial FSP research will focus on two critical Integrated Science Application (ISA) areas: ISA1, the plasma edge; and ISA2, whole device modeling (WDM) including disruption avoidance. The first of these problems involves the narrow plasma boundary layer and its complex interactions with the plasma core and the surrounding material wall. The second requires development of a computationally tractable, but comprehensive model that describes all equilibrium and dynamic processes at a sufficient level of detail to provide useful prediction of the temporal evolution of fusion plasma experiments. The initial driver for the whole device model will be prediction and avoidance of discharge-terminating disruptions, especially at high performance, which are a critical impediment to successful operation of machines like ITER. If disruptions prove unable to be avoided, their associated dynamics and effects will be addressed in the next phase of the FSP.

  2. QED Plasma and Magnetars

    E-Print Network [OSTI]

    Freytsis, Marat

    2015-01-01T23:59:59.000Z

    Magnetars are surrounded by diffuse plasma in magnetic field strengths well above the quantum electrodynamic critical value. We derive equations of "quantum force-free electrodynamics" for this plasma using an effective field theory arguments. We argue that quantum effects do not modify the large scale structure of the magnetosphere, and in particular that the spin-down rate does not deviate significantly from the classical result. We provide definite evolution equations that can be used to explore potentially important small-scale corrections, such as shock formation, which has been proposed as a mechanism for both burst and quiescent emission from magnetars.

  3. Plasma diagnostic reflectometry

    SciTech Connect (OSTI)

    Cohen, B.I.; Afeyan, B.B.; Garrison, J.C.; Kaiser, T.B. [Lawrence Livermore National Lab., CA (United States); Luhmann, N.C. Jr.; Domier, C.W.; Chou, A.E.; Baang, S. [California Univ., Davis, CA (United States). Dept. of Applied Science

    1996-02-26T23:59:59.000Z

    Theoretical and experimental studies of plasma diagnostic reflectometry have been undertaken as a collaborative research project between the Lawrence Livermore National Laboratory (LLNL) and the University of California Department of Applied Science Plasma Diagnostics Group under the auspices of the Laboratory Directed Research and Development Program at LLNL. Theoretical analyses have explored the basic principles of reflectometry to understand its limitations, to address specific gaps in the understanding of reflectometry measurements in laboratory experiments, and to explore extensions of reflectometry such as ultra-short-pulse reflectometry. The theory has supported basic laboratory reflectometry experiments where reflectometry measurements can be corroborated by independent diagnostic measurements.

  4. Magnetoacoustic solitons in quantum plasma

    SciTech Connect (OSTI)

    Hussain, S.; Mahmood, S. [Theoretical Plasma Physics Division (TPPD), PINSTECH, P.O. Nilore, Islamabad (Pakistan); Department of Physics and Applied Mathematics (DPAM), PIEAS, P.O. Nilore, Islamabad (Pakistan)

    2011-08-15T23:59:59.000Z

    Nonlinear magnetoacoustic waves in collisionless homogenous, magnetized quantum plasma is studied. Two fluid quantum magneto-hydrodynamic model (QMHD) is employed and reductive perturbation method is used to derive Korteweg de Vries (KdV) equation for magnetoacoustic waves. The effects of plasma density and magnetic field intensity are investigated on magnetoacoustic solitary structures in quantum plasma. The numerical results are also presented, which are applicable to explain some aspects of the propagation of nonlinear magnetoacosutic wave in dense astrophysical plasma situations.

  5. Instabilities and pattern formation in lowtemperature plasmas

    E-Print Network [OSTI]

    of the plasma region is approximately 20cm. (Produced by the Plasma Research Laboratory, Dublin City University

  6. Controlled zone microwave plasma system

    DOE Patents [OSTI]

    Ripley, Edward B. (Knoxville, TN); Seals, Roland D. (Oak Ridge, TN); Morrell, Jonathan S. (Knoxville, TN)

    2009-10-20T23:59:59.000Z

    An apparatus and method for initiating a process gas plasma. A conductive plate having a plurality of conductive fingers is positioned in a microwave applicator. An arc forms between the conductive fingers to initiate the formation of a plasma. A transport mechanism may convey process materials through the plasma. A spray port may be provided to expel processed materials.

  7. Dissipation in intercluster plasma

    E-Print Network [OSTI]

    Maxim Lyutikov

    2007-09-11T23:59:59.000Z

    We discuss dissipative processes in strongly gyrotropic, nearly collisionless plasma in clusters of galaxies (ICM). First, we point out that Braginsky theory, which assumes that collisions are more frequent that the system's dynamical time scale, is inapplicable to fast, sub-viscous ICM motion. Most importantly, the electron contribution to collisional magneto-viscosity dominates over that of ions for short-scale Alfvenic motions. Thus, if a turbulent cascade develops in the ICM and propagates down to scales $\\leq 1$ kpc, it is damped collisionally not on ions, but on electrons. Second, in high beta plasma of ICM, small variations of the magnetic field strength, of relative value $\\sim 1/\\beta$, lead to development of anisotropic pressure instabilities (firehose, mirror and cyclotron). Unstable wave modes may provide additional resonant scattering of particles, effectively keeping the plasma in a state of marginal stability. We show that in this case the dissipation rate of a laminar, subsonic, incompressible flows scales as inverse of plasma beta parameter. We discuss application to the problem of ICM heating.

  8. On description of quantum plasma

    E-Print Network [OSTI]

    S. V. Vladimirov; Yu. O. Tyshetskiy

    2011-01-21T23:59:59.000Z

    A plasma becomes quantum when the quantum nature of its particles significantly affects its macroscopic properties. To answer the question of when the collective quantum plasma effects are important, a proper description of such effects is necessary. We consider here the most common methods of description of quantum plasma, along with the related assumptions and applicability limits. In particular, we analyze in detail the hydrodynamic description of quantum plasma, as well as discuss some kinetic features of analytic properties of linear dielectric response function in quantum plasma. We point out the most important, in our view, fundamental problems occurring already in the linear approximation and requiring further investigation. (submitted to Physics-Uspekhi)

  9. Graduate Programs | Princeton Plasma Physics Lab

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

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

  10. Graduate Student Information - MST - UW Plasma Physics

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

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

  11. Princeton Plasma Physics Laboratory:

    SciTech Connect (OSTI)

    Phillips, C.A. (ed.)

    1986-01-01T23:59:59.000Z

    This paper discusses progress on experiments at the Princeton Plasma Physics Laboratory. The projects and areas discussed are: Principal Parameters Achieved in Experimental Devices, Tokamak Fusion Test Reactor, Princeton Large Torus, Princeton Beta Experiment, S-1 Spheromak, Current-Drive Experiment, X-ray Laser Studies, Theoretical Division, Tokamak Modeling, Spacecraft Glow Experiment, Compact Ignition Tokamak, Engineering Department, Project Planning and Safety Office, Quality Assurance and Reliability, and Administrative Operations.

  12. Plasma generating apparatus for large area plasma processing

    DOE Patents [OSTI]

    Tsai, C.C.; Gorbatkin, S.M.; Berry, L.A.

    1991-07-16T23:59:59.000Z

    A plasma generating apparatus for plasma processing applications is based on a permanent magnet line-cusp plasma confinement chamber coupled to a compact single-coil microwave waveguide launcher. The device creates an electron cyclotron resonance (ECR) plasma in the launcher and a second ECR plasma is created in the line cusps due to a 0.0875 tesla magnetic field in that region. Additional special magnetic field configuring reduces the magnetic field at the substrate to below 0.001 tesla. The resulting plasma source is capable of producing large-area (20-cm diam), highly uniform (.+-.5%) ion beams with current densities above 5 mA/cm[sup 2]. The source has been used to etch photoresist on 5-inch diam silicon wafers with good uniformity. 3 figures.

  13. Plasma generating apparatus for large area plasma processing

    DOE Patents [OSTI]

    Tsai, Chin-Chi (Oak Ridge, TN); Gorbatkin, Steven M. (Oak Ridge, TN); Berry, Lee A. (Oak Ridge, TN)

    1991-01-01T23:59:59.000Z

    A plasma generating apparatus for plasma processing applications is based on a permanent magnet line-cusp plasma confinement chamber coupled to a compact single-coil microwave waveguide launcher. The device creates an electron cyclotron resonance (ECR) plasma in the launcher and a second ECR plasma is created in the line cusps due to a 0.0875 tesla magnetic field in that region. Additional special magnetic field configuring reduces the magnetic field at the substrate to below 0.001 tesla. The resulting plasma source is capable of producing large-area (20-cm diam), highly uniform (.+-.5%) ion beams with current densities above 5 mA/cm.sup.2. The source has been used to etch photoresist on 5-inch diam silicon wafers with good uniformity.

  14. Lithium plasma emitter for collisionless magnetized plasma experiment

    SciTech Connect (OSTI)

    Kawamori, Eiichirou; Huang, Yi-Jue; Song, Sung-Xuang; Hsieh, Tung-Yuan [Institute of Space, Astrophysical and Plasma Sciences, National Cheng Kung University, Tainan, Taiwan (China); Lee, Jyun-Yi; Syugu, Wun-Jheng [Department of Physics, National Cheng Kung University, Tainan, Taiwan (China); Cheng, C. Z. [Plasma and Space Science Center, National Cheng Kung University, Tainan, Taiwan (China)

    2011-09-15T23:59:59.000Z

    This paper presents a newly developed lithium plasma emitter, which can provide quiescent and low-temperature collisionless conditions for magnetized plasma experiments. This plasma emitter generates thermal emissions of lithium ions and electrons to produce a lithium plasma. Lithium type beta-eucryptite and lanthanum-hexaboride (LaB{sub 6}) powders were mixed and directly heated with a tungsten heater to synthesize ion and electron emissions. As a result, a plasma with a diameter of {approx}15 cm was obtained in a magnetic mirror configuration. The typical range of electron density was 10{sup 12}-10{sup 13} m{sup -3} and that of electron temperature was 0.1-0.8 eV with the emitter operation temperature of about 1500 K. The amplitude fluctuations for the plasma density were lower than 1%.

  15. Towards Plasma Surgery: Plasma Treatment of Living Cells

    SciTech Connect (OSTI)

    Stoffels, E.; Kieft, I.E.; Sladek, R.E.J.; Slaaf, D.W.; Laan, E.P. van der; Jimenez-Moreno, P.; Steinbuch, M. [Department of Biomedical Engineering, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven (Netherlands); Department of Mechanical Engineering, Eindhoven University of Technology, PO Box 513, 5600 MB, Eindhoven (Netherlands)

    2004-12-01T23:59:59.000Z

    The physical, biological and technical background for high-precision plasma surgery is prepared in a multi-disciplinary team. The aim of the research is to achieve controlled removal of diseased cells and bacteria without harming the healthy rest of the tissue. For this purpose, a small, cold, flexible and non-toxic plasma is developed (the plasma needle) and tested on cultured cells and bacterial samples. The needle is an atmospheric discharge induced by a radio-frequency voltage applied to a metal pin. This plasma operates at room temperature, in the milliwatt power regime; it poses no risk of thermal or electrical damage to living tissues. Several beneficial responses of living cells to plasma treatment have been already identified. Plasma does not cause accidental cell death (necrosis), which leads to inflammation and tissue damage. Instead, it allows to detach cells from each other and from the scaffold, and thus to remove them in a non-destructive way. Moreover, plasma is capable of bacterial inactivation. I parallel, we have determined the electrical and optical properties of the plasma and found a method of precise positioning of the plasma needle with respect to the treated tissue.

  16. 2110 IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 37, NO. 11, NOVEMBER 2009 Low-Pressure Helicon-Plasma Discharge Initiation

    E-Print Network [OSTI]

    Scharer, John E.

    -temperature plasma research. Low- pressure (as low as 1 millitorr) inductively coupled plasmas are used for plasma

  17. Coulomb scattering in plasma revised

    E-Print Network [OSTI]

    S. Gordienko; D. V. Fisher; J. Meyer-ter-Vehn

    2003-05-13T23:59:59.000Z

    A closed expression for the momentum evolution of a test particle in weakly-coupled plasma is derived, starting from quantum many particle theory. The particle scatters from charge fluctuations in the plasma rather than in a sequence of independent binary collisions. Contrary to general belief, Bohr's (rather than Bethe's) Coulomb logarithm is the relevant one in most plasma applications. A power-law tail in the distribution function is confirmed by molecular dynamics simulation.

  18. Progress on laser plasma accelerators

    SciTech Connect (OSTI)

    Chen, P.

    1986-04-01T23:59:59.000Z

    Several laser plasma accelerator schemes are reviewed, with emphasis on the Plasma Beat Wave Accelerator (PBWA). Theory indicates that a very high acceleration gradient, of order 1 GeV/m, can exist in the plasma wave driven by the beating lasers. Experimental results obtained on the PBWA experiment at UCLA confirms this. Parameters related to the PBWA as an accelerator system are derived, among them issues concerning the efficiency and the laser power and energy requirements are discussed.

  19. Purification of tantalum by plasma arc melting

    DOE Patents [OSTI]

    Dunn, Paul S. (Santa Fe, NM); Korzekwa, Deniece R. (Los Alamos, NM)

    1999-01-01T23:59:59.000Z

    Purification of tantalum by plasma arc melting. The level of oxygen and carbon impurities in tantalum was reduced by plasma arc melting the tantalum using a flowing plasma gas generated from a gas mixture of helium and hydrogen. The flowing plasma gases of the present invention were found to be superior to other known flowing plasma gases used for this purpose.

  20. Plasma-based accelerator structures

    E-Print Network [OSTI]

    Schroeder, C.B.

    2011-01-01T23:59:59.000Z

    by a self- modulated intense short laser pulse”. Phys. Rev.High Intensity Short Pulse Laser Plasma Experiments”. [39]Instabilities of Short-Pulse Laser Propagation through

  1. Hollow Plasma in a Solenoid

    E-Print Network [OSTI]

    Anders, Andre

    2011-01-01T23:59:59.000Z

    Kauffeldt, E. M. Oks, and P. K. Roy, "Dense metal plasma inREFERENCES [1] P. K. Roy, S. S. Yu, E. Henestroza, A.

  2. Plasma-based accelerator structures

    E-Print Network [OSTI]

    Schroeder, C.B.

    2011-01-01T23:59:59.000Z

    significant in such ultra-short laser-plasma interactions.of ultra-short electron bunches by using colliding laser

  3. Tritium Plasma Experiment and

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssuesEnergyTransportation Work Package|DepartmenttheJuly 11,Plasma

  4. Analysis of plasma waves observed within local plasma injections seen in Saturn's magnetosphere

    E-Print Network [OSTI]

    Gurnett, Donald A.

    Analysis of plasma waves observed within local plasma injections seen in Saturn's magnetosphere J; published 17 May 2008. [1] Plasma injections or density depletion regions have been reported plasma in a cooler, locally produced plasma background. The injected plasma undergoes dispersion

  5. A dusty plasma device for producing extended, steady state, magnetized, dusty plasma columns

    E-Print Network [OSTI]

    Merlino, Robert L.

    A dusty plasma device for producing extended, steady state, magnetized, dusty plasma columns Wenjun with an existing Q machine, to produce extended, steady state, magnetized plasma columns. The dusty plasma device (DPD) is to be used for the investigation of waves in dusty plasmas and of other plasma/dust aspects

  6. Ion plasma wave and its instability in interpenetrating plasmas

    SciTech Connect (OSTI)

    Vranjes, J., E-mail: jvranjes@yahoo.com [Institute of Physics Belgrade, Pregrevica 118, 11080 Zemun (Serbia); Kono, M., E-mail: kono@fps.chuo-u.ac.jp [Faculty of Policy Studies, Chuo University, Tokyo (Japan)

    2014-04-15T23:59:59.000Z

    Some essential features of the ion plasma wave in both kinetic and fluid descriptions are presented. The wave develops at wavelengths shorter than the electron Debye radius. Thermal motion of electrons at this scale is such that they overshoot the electrostatic potential perturbation caused by ion bunching, which consequently propagates as an unshielded wave, completely unaffected by electron dynamics. So in the simplest fluid description, the electrons can be taken as a fixed background. However, in the presence of magnetic field and for the electron gyro-radius shorter than the Debye radius, electrons can participate in the wave and can increase its damping rate. This is determined by the ratio of the electron gyro-radius and the Debye radius. In interpenetrating plasmas (when one plasma drifts through another), the ion plasma wave can easily become growing and this growth rate is quantitatively presented for the case of an argon plasma.

  7. INSTITUTE OF PHYSICS PUBLISHING PLASMA SOURCES SCIENCE AND TECHNOLOGY Plasma Sources Sci. Technol. 11 (2002) 273278 PII: S0963-0252(02)35617-2

    E-Print Network [OSTI]

    Chen, Francis F.

    2002-01-01T23:59:59.000Z

    of semiconductors, ionospheric plasma research, ion lasers, general plasma physics experiments, and plasma thruster

  8. Laser Plasma Material Interactions

    SciTech Connect (OSTI)

    Schaaf, Peter; Carpene, Ettore [Universitaet Goettingen, II. Physikalisches Institut, Friedrich-Hund-Platz 1, 37077 Goettingen (Germany)

    2004-12-01T23:59:59.000Z

    Surface treatment by means of pulsed laser beams in reactive atmospheres is an attractive technique to enhance the surface features, such as corrosion and wear resistance or the hardness. Many carbides and nitrides play an important role for technological applications, requiring the mentioned property improvements. Here we present a new promising fast, flexible and clean technique for a direct laser synthesis of carbide and nitride surface films by short pulsed laser irradiation in reactive atmospheres (e.g. methane, nitrogen). The corresponding material is treated by short intense laser pulses involving plasma formation just above the irradiated surface. Gas-Plasma-Surface reactions lead to a fast incorporation of the gas species into the material and subsequently the desired coating formation if the treatment parameters are chosen properly. A number of laser types have been used for that (Excimer Laser, Nd:YAG, Ti:sapphire, Free Electron Laser) and a number of different nitride and carbide films have been successfully produced. The mechanisms and some examples will be presented for Fe treated in nitrogen and Si irradiated in methane.

  9. Steady state compact toroidal plasma production

    DOE Patents [OSTI]

    Turner, W.C.

    1983-05-17T23:59:59.000Z

    This invention relates to the confinement of field reversed plasma rings and, more particularly, to the steady state maintainance of field reversed plasma rings produced by coaxial plasma guns.

  10. Control of impurities in toroidal plasma devices

    DOE Patents [OSTI]

    Ohkawa, Tihiro (La Jolla, CA)

    1980-01-01T23:59:59.000Z

    A method and apparatus for plasma impurity control in closed flux plasma systems such as Tokamak reactors is disclosed. Local axisymmetrical injection of hydrogen gas is employed to reverse the normally inward flow of impurities into the plasma.

  11. Hollow Plasma in a Solenoid

    SciTech Connect (OSTI)

    Anders, Andre; Kauffeldt, Marina; Oks, Efim M.; Roy, Prabir K.

    2010-11-30T23:59:59.000Z

    A ring cathode for a pulsed, high-current, multi-spot cathodic arc discharge was placed inside a pulsed magnetic solenoid. Photography is used to evaluate the plasma distribution. The plasma appears hollow for cathode positions close the center of the solenoid, and it is guided closer to the axis when the cathode is away from the center.

  12. Resonant-cavity antenna for plasma heating

    DOE Patents [OSTI]

    Perkins, F.W. Jr.; Chiu, S.C.; Parks, P.; Rawls, J.M.

    1984-01-10T23:59:59.000Z

    This invention relates generally to a method and apparatus for transferring energy to a plasma immersed in a magnetic field, and relates particularly to an apparatus for heating a plasma of low atomic number ions to high temperatures by transfer of energy to plasma resonances, particularly the fundamental and harmonics of the ion cyclotron frequency of the plasma ions. This invention transfers energy from an oscillating radio-frequency field to a plasma resonance of a plasma immersed in a magnetic field.

  13. Filters for cathodic arc plasmas

    DOE Patents [OSTI]

    Anders, Andre (Albany, CA); MacGill, Robert A. (Richmond, CA); Bilek, Marcela M. M. (Engadine, AU); Brown, Ian G. (Berkeley, CA)

    2002-01-01T23:59:59.000Z

    Cathodic arc plasmas are contaminated with macroparticles. A variety of magnetic plasma filters has been used with various success in removing the macroparticles from the plasma. An open-architecture, bent solenoid filter, with additional field coils at the filter entrance and exit, improves macroparticle filtering. In particular, a double-bent filter that is twisted out of plane forms a very compact and efficient filter. The coil turns further have a flat cross-section to promote macroparticle reflection out of the filter volume. An output conditioning system formed of an expander coil, a straightener coil, and a homogenizer, may be used with the magnetic filter for expanding the filtered plasma beam to cover a larger area of the target. A cathodic arc plasma deposition system using this filter can be used for the deposition of ultrathin amorphous hard carbon (a-C) films for the magnetic storage industry.

  14. Quantitative proteomics analysis of adsorbed plasma proteins...

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

    proteomics analysis of adsorbed plasma proteins classifies nanoparticles with different surface properties and size Quantitative proteomics analysis of adsorbed plasma proteins...

  15. Method & apparatus for monitoring plasma processing operations

    DOE Patents [OSTI]

    Smith, Jr., Michael Lane; Ward, Pamela Denise; Stevenson, Joel O'Don

    2004-10-19T23:59:59.000Z

    The invention generally relates to various aspects of a plasma process and, more specifically, to the monitoring of such plasma processes. One aspect relates to a plasma monitoring module that may be adjusted in at least some manner so as to re-evaluate a previously monitored plasma process. For instance, optical emissions data on a plasma process that was previously monitored by the plasma monitoring module may be replayed through the plasma monitoring module after making at least one adjustment in relation to the plasma monitoring module.

  16. Meter scale plasma source for plasma wakefield experiments

    SciTech Connect (OSTI)

    Vafaei-Najafabadi, N.; Shaw, J. L.; Marsh, K. A.; Joshi, C.; Hogan, M. J. [Department of Electrical Engineering, University of California Los Angeles, Los Angeles, CA 90095 (United States); SLAC National Accelerator Laboratory, Menlo Park, CA 94025 (United States)

    2012-12-21T23:59:59.000Z

    High accelerating gradients generated by a high density electron beam moving through plasma has been used to double the energy of the SLAC electron beam [1]. During that experiment, the electron current density was high enough to generate its own plasma without significant head erosion. In the newly commissioned FACET facility at SLAC, the peak current will be lower and without pre-ionization, head erosion will be a significant challenge for the planned experiments. In this work we report on our design of a meter scale plasma source for these experiments to effectively avoid the problem of head erosion. The plasma source is based on a homogeneous metal vapor gas column that is generated in a heat pipe oven [2]. A lithium oven over 30 cm long at densities over 10{sup 17} cm{sup -3} has been constructed and tested at UCLA. The plasma is then generated by coupling a 10 TW short pulse Ti:Sapphire laser into the gas column using an axicon lens setup. The Bessel profile of the axicon setup creates a region of high intensity that can stretch over the full length of the gas column with approximately constant diameter. In this region of high intensity, the alkali metal vapor is ionized through multi-photon ionization process. In this manner, a fully ionized meter scale plasma of uniform density can be formed. Methods for controlling the plasma diameter and length will also be discussed.

  17. Liquid injection plasma deposition method and apparatus

    DOE Patents [OSTI]

    Kong, Peter C. (Idaho Falls, ID); Watkins, Arthur D. (Idaho Falls, ID)

    1999-01-01T23:59:59.000Z

    A liquid injection plasma torch deposition apparatus for depositing material onto a surface of a substrate may comprise a plasma torch for producing a jet of plasma from an outlet nozzle. A plasma confinement tube having an inlet end and an outlet end and a central bore therethrough is aligned with the outlet nozzle of the plasma torch so that the plasma jet is directed into the inlet end of the plasma confinement tube and emerges from the outlet end of the plasma confinement tube. The plasma confinement tube also includes an injection port transverse to the central bore. A liquid injection device connected to the injection port of the plasma confinement tube injects a liquid reactant mixture containing the material to be deposited onto the surface of the substrate through the injection port and into the central bore of the plasma confinement tube.

  18. Liquid injection plasma deposition method and apparatus

    DOE Patents [OSTI]

    Kong, P.C.; Watkins, A.D.

    1999-05-25T23:59:59.000Z

    A liquid injection plasma torch deposition apparatus for depositing material onto a surface of a substrate may comprise a plasma torch for producing a jet of plasma from an outlet nozzle. A plasma confinement tube having an inlet end and an outlet end and a central bore therethrough is aligned with the outlet nozzle of the plasma torch so that the plasma jet is directed into the inlet end of the plasma confinement tube and emerges from the outlet end of the plasma confinement tube. The plasma confinement tube also includes an injection port transverse to the central bore. A liquid injection device connected to the injection port of the plasma confinement tube injects a liquid reactant mixture containing the material to be deposited onto the surface of the substrate through the injection port and into the central bore of the plasma confinement tube. 8 figs.

  19. Aerospace & Energetics Research Program -University of Washington Plasma Dynamics Group

    E-Print Network [OSTI]

    Shumlak, Uri

    - University of Washington Plasma Dynamics Group q The Boltzmann equation is seven dimensional. qAerospace & Energetics Research Program - University of Washington Plasma Dynamics Group Plasma Research Program - University of Washington Plasma Dynamics Group Abstract Many current plasma simulation

  20. Atmospheric-pressure plasma jet

    DOE Patents [OSTI]

    Selwyn, Gary S. (Los Alamos, NM)

    1999-01-01T23:59:59.000Z

    Atmospheric-pressure plasma jet. A .gamma.-mode, resonant-cavity plasma discharge that can be operated at atmospheric pressure and near room temperature using 13.56 MHz rf power is described. Unlike plasma torches, the discharge produces a gas-phase effluent no hotter than 250.degree. C. at an applied power of about 300 W, and shows distinct non-thermal characteristics. In the simplest design, two concentric cylindrical electrodes are employed to generate a plasma in the annular region therebetween. A "jet" of long-lived metastable and reactive species that are capable of rapidly cleaning or etching metals and other materials is generated which extends up to 8 in. beyond the open end of the electrodes. Films and coatings may also be removed by these species. Arcing is prevented in the apparatus by using gas mixtures containing He, which limits ionization, by using high flow velocities, and by properly shaping the rf-powered electrode. Because of the atmospheric pressure operation, no ions survive for a sufficiently long distance beyond the active plasma discharge to bombard a workpiece, unlike low-pressure plasma sources and conventional plasma processing methods.

  1. Fast pulse nonthermal plasma reactor

    DOE Patents [OSTI]

    Rosocha, Louis A.

    2005-06-14T23:59:59.000Z

    A fast pulsed nonthermal plasma reactor includes a discharge cell and a charging assembly electrically connected thereto. The charging assembly provides plural high voltage pulses to the discharge cell. Each pulse has a rise time between one and ten nanoseconds and a duration of three to twenty nanoseconds. The pulses create nonthermal plasma discharge within the discharge cell. Accordingly, the nonthermal plasma discharge can be used to remove pollutants from gases or break the gases into smaller molecules so that they can be more efficiently combusted.

  2. Plasma Chemistry and Plasma Processing, Vol. 23, No. 1, March 2003 ( 2003) Model of the Negative DC Corona Plasma

    E-Print Network [OSTI]

    Chen, Junhong

    Plasma Chemistry and Plasma Processing, Vol. 23, No. 1, March 2003 ( 2003) Model of the Negative DC Corona Plasma: Comparison to the Positive DC Corona Plasma Junhong Chen1 and Jane H. Davidson1,2 Receiûed March 26, 2002, reûised June 14, 2002 A numerical model of the negatiûe DC corona plasma along a thin

  3. Thermal plasma chemical synthesis of powders

    SciTech Connect (OSTI)

    Vogt, G.J.; Newkirk, L.R.

    1985-01-01T23:59:59.000Z

    Thermal plasma processing has been increasingly used to synthesize submicron powders of high-purity ceramics and metals. The high temperatures generated with the plasma provide a vapor phase reaction zone for elements with high boiling points and refractory materials. An overview is presented on the general plasma technology used in synthesis and on the properties of plasma powders.

  4. ASSOCIATED LABORATORY PLASMA PHYSICS AND ENGINEERING

    E-Print Network [OSTI]

    Lisboa, Universidade Técnica de

    ASSOCIATED LABORATORY ON PLASMA PHYSICS AND ENGINEERING Centro de Fusão Nuclear Centro de Física dos PlasmasCentro de Fusão Nuclear INSTITUTO SUPERIOR TÉCNICO Centro de Física dos Plasmas WORK Units of excellence in Europe, in the fields of Nuclear Fusion, Plasma Physics and Technologies

  5. Penetration of plasma into the wafer-focus ring gap in capacitively coupled plasmas

    E-Print Network [OSTI]

    Kushner, Mark

    Penetration of plasma into the wafer-focus ring gap in capacitively coupled plasmas Natalia Y of capacitively coupled plasma reactors with a wafer-focus ring gap. The penetration of plasma generated species i.e., ions and radicals into the wafer-focus ring gap is discussed. We found that the penetration of plasma

  6. Nonlinear plasma waves excitation by intense ion beams in background plasma

    E-Print Network [OSTI]

    Kaganovich, Igor

    describe the plasma perturbations well.5 Here, we focus on the general case where the plasma density hasNonlinear plasma waves excitation by intense ion beams in background plasma Igor D. Kaganovich, Edward A. Startsev, and Ronald C. Davidson Plasma Physics Laboratory, Princeton University, Princeton

  7. CHAPTER 5. PLASMA DESCRIPTIONS I: KINETIC, TWO-FLUID 1 Plasma Descriptions I

    E-Print Network [OSTI]

    Callen, James D.

    CHAPTER 5. PLASMA DESCRIPTIONS I: KINETIC, TWO-FLUID 1 Chapter 5 Plasma Descriptions I: Kinetic, Two-Fluid Descriptions of plasmas are obtained from extensions of the kinetic theory of gases of charged particles in the plasma, and because the electric and magnetic fields in the plasma must

  8. Phys780: Basic Plasma Physics 1 PHYS 780. Basic Plasma Physics

    E-Print Network [OSTI]

    Phys780: Basic Plasma Physics 1 PHYS 780. Basic Plasma Physics Course objective The course objective is to introduce students to basic concepts of plasma physics and magneto-hydrodynamics with applications to solar-terrestrial physics. The course topics include: plasma classification, basic plasma prop

  9. Experimental Investigation of Non-Thermal Electric Fields and Plasma Waves in Pulsed-Power Plasmas

    E-Print Network [OSTI]

    -field-plasma interaction, particle accelera- tion, growth of instabilities and plasma waves. As yet, to the hest of our and the properties of plasmas under high-power pulses at the nanosecond time scale. The method is based on resonant in a coaxial-pulsed-plasma configura- tion. The plasma is doped with a laser-produced lithium heam, fol- lowed

  10. Atomic phenomena in dense plasmas

    SciTech Connect (OSTI)

    Weisheit, J.C.

    1981-03-01T23:59:59.000Z

    The following chapters are included: (1) the plasma environment, (2) perturbations of atomic structure, (3) perturbations of atomic collisions, (4) formation of spectral lines, and (5) dielectronic recombination. (MOW)

  11. Coherent control of plasma dynamics

    E-Print Network [OSTI]

    He, Z -H; Lebailly, V; Nees, J A; Krushelnick, K; Thomas, A G R

    2015-01-01T23:59:59.000Z

    Coherent control of a system involves steering an interaction to a final coherent state by controlling the phase of an applied field. Plasmas support coherent wave structures that can be generated by intense laser fields. Here, we demonstrate the coherent control of plasma dynamics in a laser wakefield electron acceleration experiment. A genetic algorithm is implemented using a deformable mirror with the electron beam signal as feedback, which allows a heuristic search for the optimal wavefront under laser-plasma conditions that is not known a priori. We are able to improve both the electron beam charge and angular distribution by an order of magnitude. These improvements do not simply correlate with having the `best' focal spot, since the highest quality vacuum focal spot produces a greatly inferior electron beam, but instead correspond to the particular laser phase that steers the plasma wave to a final state with optimal accelerating fields.

  12. Quark-gluon plasma paradox

    E-Print Network [OSTI]

    Dariusz Miskowiec

    2007-07-06T23:59:59.000Z

    Based on simple physics arguments it is shown that the concept of quark-gluon plasma, a state of matter consisting of uncorrelated quarks, antiquarks, and gluons, has a fundamental problem.

  13. Mobile inductively coupled plasma system

    DOE Patents [OSTI]

    D'Silva, Arthur P. (Ames, IA); Jaselskis, Edward J. (Ames, IA)

    1999-03-30T23:59:59.000Z

    A system for sampling and analyzing a material located at a hazardous site. A laser located remote from the hazardous site is connected to an optical fiber, which directs laser radiation proximate the material at the hazardous site. The laser radiation abates a sample of the material. An inductively coupled plasma is located remotely from the material. An aerosol transport system carries the ablated particles to a plasma, where they are dissociated, atomized and excited to provide characteristic optical reduction of the elemental constituents of the sample. An optical spectrometer is located remotely from the site. A second optical fiber is connected to the optical spectrometer at one end and the plasma source at the other end to carry the optical radiation from the plasma source to the spectrometer.

  14. Mobile inductively coupled plasma system

    DOE Patents [OSTI]

    D`Silva, A.P.; Jaselskis, E.J.

    1999-03-30T23:59:59.000Z

    A system is described for sampling and analyzing a material located at a hazardous site. A laser located remotely from the hazardous site is connected to an optical fiber, which directs laser radiation proximate the material at the hazardous site. The laser radiation abates a sample of the material. An inductively coupled plasma is located remotely from the material. An aerosol transport system carries the ablated particles to a plasma, where they are dissociated, atomized and excited to provide characteristic optical reduction of the elemental constituents of the sample. An optical spectrometer is located remotely from the site. A second optical fiber is connected to the optical spectrometer at one end and the plasma source at the other end to carry the optical radiation from the plasma source to the spectrometer. 10 figs.

  15. The Plasma Magnet John Slough

    E-Print Network [OSTI]

    Shepherd, Simon

    windmill) Two polyphase magnetic coils (stator) are used to drive steady ring currents in the local plasma representation in the ring currents formed when the magnetosphere is compressed by the solar wind. The process

  16. News | Princeton Plasma Physics Lab

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

    after tests at PPPL. (Photo by Elle StarkmanPPPL Office of Communications) The titanium coupon being treated in the oxygen plasma. (Photo by Elle StarkmanPPPL Office of...

  17. Laser Assisted Plasma Arc Welding

    SciTech Connect (OSTI)

    FUERSCHBACH,PHILLIP W.

    1999-10-05T23:59:59.000Z

    Experiments have been performed using a coaxial end-effecter to combine a focused laser beam and a plasma arc. The device employs a hollow tungsten electrode, a focusing lens, and conventional plasma arc torch nozzles to co-locate the focused beam and arc on the workpiece. Plasma arc nozzles were selected to protect the electrode from laser generated metal vapor. The project goal is to develop an improved fusion welding process that exhibits both absorption robustness and deep penetration for small scale (< 1.5 mm thickness) applications. On aluminum alloys 6061 and 6111, the hybrid process has been shown to eliminate hot cracking in the fusion zone. Fusion zone dimensions for both stainless steel and aluminum were found to be wider than characteristic laser welds, and deeper than characteristic plasma arc welds.

  18. Layered plasma polymer composite membranes

    DOE Patents [OSTI]

    Babcock, W.C.

    1994-10-11T23:59:59.000Z

    Layered plasma polymer composite fluid separation membranes are disclosed, which comprise alternating selective and permeable layers for a total of at least 2n layers, where n is [>=]2 and is the number of selective layers. 2 figs.

  19. Neutrino dispersion in magnetized plasma

    E-Print Network [OSTI]

    N. V. Mikheev; E. N. Narynskaya

    2008-12-02T23:59:59.000Z

    The neutrino dispersion in the charge symmetric magnetized plasma is investigated. We have studied the plasma contribution into the additional energy of neutrino and obtained the simple expression for it. We consider in detail the neutrino self-energy under physical conditions of weak field, moderate field and strong field limits. It is shown that our result for neutrino dispersion in moderate magnetic field differ substantially from the previous one in the literature.

  20. Flavors in an expanding plasma

    E-Print Network [OSTI]

    Johannes Große; Romuald A. Janik; Piotr Surówka

    2008-02-05T23:59:59.000Z

    We consider the effect of an expanding plasma on probe matter by determining time-dependent D7 embeddings in the holographic dual of an expanding viscous plasma. We calculate the chiral condensate and meson spectra including contributions of viscosity. The chiral condensate essentially confirms the expectation from the static black hole. For the meson spectra we propose a scheme that is in agreement with the adiabatic approximation. New contributions arise for the vector mesons at the order of the viscosity terms.

  1. Chaos in a complex plasma

    SciTech Connect (OSTI)

    Sheridan, T.E. [Department of Physics and Astronomy, Ohio Northern University, Ada, Ohio 45810 (United States)

    2005-08-15T23:59:59.000Z

    Chaotic dynamics is observed experimentally in a complex (dusty) plasma of three particles. A low-frequency sinusoidal modulation of the plasma density excites both the center-of-mass and breathing modes. Low-dimensional chaos is seen for a 1:2 resonance between these modes. A strange attractor with a dimension of 2.48{+-}0.05 is observed. The largest Lyapunov exponent is positive.

  2. Magnetic reconnection in nontoroidal plasmas

    SciTech Connect (OSTI)

    Boozer, Allen H. [Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027 (United States)

    2005-07-15T23:59:59.000Z

    Magnetic reconnection is a major issue in solar and astrophysical plasmas. The mathematical result that the evolution of a magnetic field with only point nulls is always locally ideal limits the nature of reconnection in nontoroidal plasmas. Here it is shown that the exponentially increasing separation of neighboring magnetic field lines, which is generic, tends to produce rapid magnetic reconnection if the length of the field lines is greater than about 20 times the exponentiation, or Lyapunov, length.

  3. RF laser plasma measurements

    SciTech Connect (OSTI)

    Bollen, W.M.

    1984-08-01T23:59:59.000Z

    One of the major difficulties with excimer lasers has been the presence of impurities, introduced, for example, by the electrodes present in the D.C. discharge approach. Use of microwave excitation makes possible an electrodeless discharge, thereby reducing the risk of introducing impurities into the laser mix. In this approach a tube containing the laser mix is inserted in a waveguide or microwave cavity; the microwaves then break down the laser mix to form a discharge and further interact to heat that discharge. In such microwave discharges, strong fluorescence seems limited to approximately 100 ns. In the same time frame, the fluorescence has also been observed to collapse to the wall. The wall collapse may be related to the reduced fluorescence (reduced radiation area), although burn-up of the lasing components seems more likely. The collapse to the wall reduces the ability to lase by decreasing the active volume. A better understanding of this effect needs to be obtained before a microwave-driven laser can be further developed. This research effort was directed towards obtaining a fundamental understanding of the collapse of the fluorescence to the tube walls. The ultimate goal is to understand the collapse sufficiently to prevent or reduce its effects; to this end, a number of basic plasma physics experiments have been carried out. A complete understanding has not yet been reached.

  4. Electric field divertor plasma pump

    DOE Patents [OSTI]

    Schaffer, M.J.

    1994-10-04T23:59:59.000Z

    An electric field plasma pump includes a toroidal ring bias electrode positioned near the divertor strike point of a poloidal divertor of a tokamak, or similar plasma-confining apparatus. For optimum plasma pumping, the separatrix of the poloidal divertor contacts the ring electrode, which then also acts as a divertor plate. A plenum or other duct near the electrode includes an entrance aperture open to receive electrically-driven plasma. The electrode is insulated laterally with insulators, one of which is positioned opposite the electrode at the entrance aperture. An electric field E is established between the ring electrode and a vacuum vessel wall, with the polarity of the bias applied to the electrode being relative to the vessel wall selected such that the resultant electric field E interacts with the magnetic field B already existing in the tokamak to create an E [times] B/B[sup 2] drift velocity that drives plasma into the entrance aperture. The pumped plasma flow into the entrance aperture is insensitive to variations, intentional or otherwise, of the pump and divertor geometry. Pressure buildups in the plenum or duct connected to the entrance aperture in excess of 10 mtorr are achievable. 11 figs.

  5. Electric field divertor plasma pump

    DOE Patents [OSTI]

    Schaffer, Michael J. (San Diego, CA)

    1994-01-01T23:59:59.000Z

    An electric field plasma pump includes a toroidal ring bias electrode (56) positioned near the divertor strike point of a poloidal divertor of a tokamak (20), or similar plasma-confining apparatus. For optimum plasma pumping, the separatrix (40) of the poloidal divertor contacts the ring electrode (56), which then also acts as a divertor plate. A plenum (54) or other duct near the electrode (56) includes an entrance aperture open to receive electrically-driven plasma. The electrode (56) is insulated laterally with insulators (63,64), one of which (64) is positioned opposite the electrode at the entrance aperture. An electric field E is established between the ring electrode (56) and a vacuum vessel wall (22), with the polarity of the bias applied to the electrode being relative to the vessel wall selected such that the resultant electric field E interacts with the magnetic field B already existing in the tokamak to create an E.times.B/B.sup.2 drift velocity that drives plasma into the entrance aperture. The pumped plasma flow into the entrance aperture is insensitive to variations, intentional or otherwise, of the pump and divertor geometry. Pressure buildups in the plenum or duct connected to the entrance aperture in excess of 10 mtorr are achievable.

  6. The Madison plasma dynamo experiment: A facility for studying laboratory plasma astrophysics

    E-Print Network [OSTI]

    Cooper, C. M.

    The Madison plasma dynamo experiment (MPDX) is a novel, versatile, basic plasma research device designed to investigate flow driven magnetohydrodynamic instabilities and other high-? phenomena with astrophysically relevant ...

  7. atmospheric plasma sources: Topics by E-print Network

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

    in active plasma region and plasma parameters (electron density and electron distribution function) are determined. Concentrations of oxygen atoms and ozone in the plasma...

  8. atazanavir plasma concentrations: Topics by E-print Network

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

    Physics and Fusion Websites Summary: The Workshop will concentrate on burning plasma research in the areas of Plasma Transport and Confinement, MHD plasma research; ...

  9. affects plasma concentrations: Topics by E-print Network

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

    Physics and Fusion Websites Summary: The Workshop will concentrate on burning plasma research in the areas of Plasma Transport and Confinement, MHD plasma research; ...

  10. aiv plasma concentrations: Topics by E-print Network

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

    Physics and Fusion Websites Summary: The Workshop will concentrate on burning plasma research in the areas of Plasma Transport and Confinement, MHD plasma research; ...

  11. LASER-PLASMA-ACCELERATOR-BASED GAMMA GAMMA COLLIDERS

    E-Print Network [OSTI]

    Schroeder, C. B.

    2010-01-01T23:59:59.000Z

    LASER-PLASMA-ACCELERATOR-BASED ?? COLLIDERS ? C. B.linear col- lider based on laser-plasma-accelerators arediscussed, and a laser-plasma-accelerator-based gamma-

  12. Laser Plasma Particle Accelerators: Large Fields for Smaller Facility Sources

    E-Print Network [OSTI]

    Geddes, Cameron G.R.

    2010-01-01T23:59:59.000Z

    of high- gradient, laser plasma particle accelerators.accelerators that use laser-driven plasma waves. Theseleft) showing the laser (red), plasma wake density (purple-

  13. Tailored net-shape powder composites by spark plasma sintering

    E-Print Network [OSTI]

    Khaleghi, Evan Aryan

    2012-01-01T23:59:59.000Z

    produced by spark plasma sintering”, Powder Metall. , 51, 59nanoparticles in spark plasma sintering. Mater. Sci. Eng. ,Evolution During Spark Plasma Sintering,” Ceram. Int. , 35,

  14. Extreme hydrogen plasma densities achieved in a linear plasma generator

    SciTech Connect (OSTI)

    Rooij, G. J. van; Veremiyenko, V. P.; Goedheer, W. J.; de Groot, B.; Kleyn, A. W.; Smeets, P. H. M.; Versloot, T. W.; Whyte, D. G.; Engeln, R.; Schram, D. C.; Cardozo, N. J. Lopes [FOM-Institute for Plasma Physics Rijnhuizen, Association EURATOM-FOM, Trilateral Euregio Cluster, Nieuwegein, Uthrecht 3430BE (Netherlands); Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States); FOM-Institute for Plasma Physics Rijnhuizen, Association EURATOM-FOM, Trilateral Euregio Cluster, Nieuwegein, Uthrecht 3430BE (NL) and Eindhoven University of Technology, 5600 MB Eindhoven (Netherlands)

    2007-03-19T23:59:59.000Z

    A magnetized hydrogen plasma beam was generated with a cascaded arc, expanding in a vacuum vessel at an axial magnetic field of up to 1.6 T. Its characteristics were measured at a distance of 4 cm from the nozzle: up to a 2 cm beam diameter, 7.5x10{sup 20} m{sup -3} electron density, {approx}2 eV electron and ion temperatures, and 3.5 km/s axial plasma velocity. This gives a 2.6x10{sup 24} H{sup +} m{sup -2} s{sup -1} peak ion flux density, which is unprecedented in linear plasma generators. The high efficiency of the source is obtained by the combined action of the magnetic field and an optimized nozzle geometry. This is interpreted as a cross-field return current that leads to power dissipation in the beam just outside the source.

  15. Recent Advances in Plasma Acceleration

    SciTech Connect (OSTI)

    Hogan, Mark

    2007-03-19T23:59:59.000Z

    The costs and the time scales of colliders intended to reach the energy frontier are such that it is important to explore new methods of accelerating particles to high energies. Plasma-based accelerators are particularly attractive because they are capable of producing accelerating fields that are orders of magnitude larger than those used in conventional colliders. In these accelerators a drive beam, either laser or particle, produces a plasma wave (wakefield) that accelerates charged particles. The ultimate utility of plasma accelerators will depend on sustaining ultra-high accelerating fields over a substantial length to achieve a significant energy gain. More than 42 GeV energy gain was achieved in an 85 cm long plasma wakefield accelerator driven by a 42 GeV electron drive beam in the Final Focus Test Beam (FFTB) Facility at SLAC. Most of the beam electrons lose energy to the plasma wave, but some electrons in the back of the same beam pulse are accelerated with a field of {approx}52 GV/m. This effectively doubles their energy, producing the energy gain of the 3 km long SLAC accelerator in less than a meter for a small fraction of the electrons in the injected bunch. Prospects for a drive-witness bunch configuration and high-gradient positron acceleration experiments planned for the SABER facility will be discussed.

  16. Plasma instrumentation for fusion power reactor control

    SciTech Connect (OSTI)

    Sager, G.T.; Bauer, J.F.; Maya, I.; Miley, G.H.

    1985-07-01T23:59:59.000Z

    Feedback control will be implemented in fusion power reactors to guard against unpredicted behavior of the plant and to assure desirable operation. In this study, plasma state feedback requirements for plasma control by systems strongly coupled to the plasma (magnet sets, RF, and neutral beam heating systems, and refueling systems) are estimated. Generic considerations regarding the impact of the power reactor environment on plasma instrumentation are outlined. Solutions are proposed to minimize the impact of the power reactor environment on plasma instrumentation. Key plasma diagnostics are evaluated with respect to their potential for upgrade and implementation as power reactor instruments.

  17. Coupled microwave ECR and radio-frequency plasma source for plasma processing

    DOE Patents [OSTI]

    Tsai, C.C.; Haselton, H.H.

    1994-03-08T23:59:59.000Z

    In a dual plasma device, the first plasma is a microwave discharge having its own means of plasma initiation and control. The microwave discharge operates at electron cyclotron resonance (ECR), and generates a uniform plasma over a large area of about 1000 cm[sup 2] at low pressures below 0.1 mtorr. The ECR microwave plasma initiates the second plasma, a radio frequency (RF) plasma maintained between parallel plates. The ECR microwave plasma acts as a source of charged particles, supplying copious amounts of a desired charged excited species in uniform manner to the RF plasma. The parallel plate portion of the apparatus includes a magnetic filter with static magnetic field structure that aids the formation of ECR zones in the two plasma regions, and also assists in the RF plasma also operating at electron cyclotron resonance. 4 figures.

  18. Coupled microwave ECR and radio-frequency plasma source for plasma processing

    DOE Patents [OSTI]

    Tsai, Chin-Chi (Oak Ridge, TN); Haselton, Halsey H. (Knoxville, TN)

    1994-01-01T23:59:59.000Z

    In a dual plasma device, the first plasma is a microwave discharge having its own means of plasma initiation and control. The microwave discharge operates at electron cyclotron resonance (ECR), and generates a uniform plasma over a large area of about 1000 cm.sup.2 at low pressures below 0.1 mtorr. The ECR microwave plasma initiates the second plasma, a radio frequency (RF) plasma maintained between parallel plates. The ECR microwave plasma acts as a source of charged particles, supplying copious amounts of a desired charged excited species in uniform manner to the RF plasma. The parallel plate portion of the apparatus includes a magnetic filter with static magnetic field structure that aids the formation of ECR zones in the two plasma regions, and also assists in the RF plasma also operating at electron cyclotron resonance.

  19. Plasma-catalyzed fuel reformer

    DOE Patents [OSTI]

    Hartvigsen, Joseph J.; Elangovan, S.; Czernichowski, Piotr; Hollist, Michele

    2013-06-11T23:59:59.000Z

    A reformer is disclosed that includes a plasma zone to receive a pre-heated mixture of reactants and ionize the reactants by applying an electrical potential thereto. A first thermally conductive surface surrounds the plasma zone and is configured to transfer heat from an external heat source into the plasma zone. The reformer further includes a reaction zone to chemically transform the ionized reactants into synthesis gas comprising hydrogen and carbon monoxide. A second thermally conductive surface surrounds the reaction zone and is configured to transfer heat from the external heat source into the reaction zone. The first thermally conductive surface and second thermally conductive surface are both directly exposed to the external heat source. A corresponding method and system are also disclosed and claimed herein.

  20. Particle transport in plasma reactors

    SciTech Connect (OSTI)

    Rader, D.J.; Geller, A.S.; Choi, Seung J. [Sandia National Labs., Albuquerque, NM (United States); Kushner, M.J. [Illinois Univ., Urbana, IL (United States)

    1995-01-01T23:59:59.000Z

    SEMATECH and the Department of Energy have established a Contamination Free Manufacturing Research Center (CFMRC) located at Sandia National Laboratories. One of the programs underway at the CFMRC is directed towards defect reduction in semiconductor process reactors by the application of computational modeling. The goal is to use fluid, thermal, plasma, and particle transport models to identify process conditions and tool designs that reduce the deposition rate of particles on wafers. The program is directed toward defect reduction in specific manufacturing tools, although some model development is undertaken when needed. The need to produce quantifiable improvements in tool defect performance requires the close cooperation among Sandia, universities, SEMATECH, SEMATECH member companies, and equipment manufacturers. Currently, both plasma (e.g., etch, PECVD) and nonplasma tools (e.g., LPCVD, rinse tanks) are being worked on under this program. In this paper the authors summarize their recent efforts to reduce particle deposition on wafers during plasma-based semiconductor manufacturing.

  1. Constricted glow discharge plasma source

    DOE Patents [OSTI]

    Anders, Andre (Albany, CA); Anders, Simone (Albany, CA); Dickinson, Michael (San Leandro, CA); Rubin, Michael (Berkeley, CA); Newman, Nathan (Winnetka, IL)

    2000-01-01T23:59:59.000Z

    A constricted glow discharge chamber and method are disclosed. The polarity and geometry of the constricted glow discharge plasma source is set so that the contamination and energy of the ions discharged from the source are minimized. The several sources can be mounted in parallel and in series to provide a sustained ultra low source of ions in a plasma with contamination below practical detection limits. The source is suitable for applying films of nitrides such as gallium nitride and oxides such as tungsten oxide and for enriching other substances in material surfaces such as oxygen and water vapor, which are difficult process as plasma in any known devices and methods. The source can also be used to assist the deposition of films such as metal films by providing low-energy ions such as argon ions.

  2. Plasma Panel Based Radiation Detectors

    SciTech Connect (OSTI)

    Friedman, Dr. Peter S. [Integrated Sensors, LLC; Varner Jr, Robert L [ORNL; Ball, Robert [University of Michigan; Beene, James R [ORNL; Ben Moshe, M. [Tel Aviv University; Benhammou, Yan [Tel Aviv University; Chapman, J. Wehrley [University of Michigan; Etzion, E [Tel Aviv University; Ferretti, Claudio [University of Michigan; Bentefour, E [Ion Beam Applications; Levin, Daniel S. [University of Michigan; Moshe, M. [Tel Aviv University; Silver, Yiftah [Tel Aviv University; Weaverdyck, Curtis [University of Michigan; Zhou, Bing [University of Michigan

    2013-01-01T23:59:59.000Z

    The plasma panel sensor (PPS) is a gaseous micropattern radiation detector under current development. It has many operational and fabrication principles common to plasma display panels (PDPs). It comprises a dense matrix of small, gas plasma discharge cells within a hermetically sealed panel. As in PDPs, it uses non-reactive, intrinsically radiation-hard materials such as glass substrates, refractory metal electrodes, and mostly inert gas mixtures. We are developing these devices primarily as thin, low-mass detectors with gas gaps from a few hundred microns to a few millimeters. The PPS is a high gain, inherently digital device with the potential for fast response times, fine position resolution (< 50 m RMS) and low cost. In this paper we report here on prototype PPS experimental results in detecting betas, protons and cosmic muons, and we extrapolate on the PPS potential for applications including detection of alphas, heavy-ions at low to medium energy, thermal neutrons and X-rays.

  3. Plasma Production via Field Ionization

    SciTech Connect (OSTI)

    O'Connell, C.L.; Barnes, C.D.; Decker, F.; Hogan, M.J.; Iverson, R.; Krejcik, P.; Siemann, R.; Walz, D.R.; /SLAC; Clayton, C.E.; Huang, C.; Johnson, D.K.; Joshi, C.; Lu,; Marsh, K.A.; Mori, W.; Zhou, M.; /UCLA; Deng, S.; Katsouleas, T.; Muggli, P.; Oz, E.; /Southern California U.

    2007-01-02T23:59:59.000Z

    Plasma production via field ionization occurs when an incoming particle beam is sufficiently dense that the electric field associated with the beam ionizes a neutral vapor or gas. Experiments conducted at the Stanford Linear Accelerator Center explore the threshold conditions necessary to induce field ionization by an electron beam in a neutral lithium vapor. By independently varying the transverse beam size, number of electrons per bunch or bunch length, the radial component of the electric field is controlled to be above or below the threshold for field ionization. Additional experiments ionized neutral xenon and neutral nitric oxide by varying the incoming beam's bunch length. A self-ionized plasma is an essential step for the viability of plasma-based accelerators for future high-energy experiments.

  4. Plasma Wakefield Experiments at FACET

    SciTech Connect (OSTI)

    Hogan, M.J.; England, R.J.; Frederico, J.; Hast, C.; Li, S.Z.; Litos, M.; Walz, D.; /SLAC; An, W.; Clayton, C.E.; Joshi, C.; Lu, W.; Marsh, K.A.; Mori, W.; Tochitsky, S.; /UCLA; Muggli, P.; Pinkerton, S.; Shi, Y.; /Southern California U.

    2011-08-19T23:59:59.000Z

    FACET, the Facility for Advanced Accelerator and Experimental Tests, is a new facility being constructed in sector 20 of the SLAC linac primarily to study beam driven plasma wakefield acceleration beginning in summer 2011. The nominal FACET parameters are 23GeV, 3nC electron bunches compressed to {approx}20{micro}m long and focused to {approx}10{micro}m wide. The intense fields of the FACET bunches will be used to field ionize neutral lithium or cesium vapor produced in a heat pipe oven. Previous experiments at the SLAC FFTB facility demonstrated 50GeV/m gradients in an 85cm field ionized lithium plasma where the interaction distance was limited by head erosion. Simulations indicate the lower ionization potential of cesium will decrease the rate of head erosion and increase single stage performance. The initial experimental program will compare the performance of lithium and cesium plasma sources with single and double bunches. Later experiments will investigate improved performance with a pre-ionized cesium plasma. The status of the experiments and expected performance are reviewed. The FACET Facility is being constructed in sector 20 of the SLAC linac primarily to study beam driven plasma wakefield acceleration. The facility will begin commissioning in summer 2011 and conduct an experimental program over the coming five years to study electron and positron beam driven plasma acceleration with strong wake loading in the non-linear regime. The FACET experiments aim to demonstrate high-gradient acceleration of electron and positron beams with high efficiency and negligible emittance growth.

  5. Relativistic effects on plasma expansion

    SciTech Connect (OSTI)

    Benkhelifa, El-Amine; Djebli, Mourad, E-mail: mdjebli@usthb.dz [USTHB, Faculty of Physics, Theoretical Physics Laboratory, B.P. 32 Bab-Ezzouar, 16079 Algiers (Algeria)

    2014-07-15T23:59:59.000Z

    The expansion of electron-ion plasma is studied through a fully relativistic multi-fluids plasma model which includes thermal pressure, ambipolar electrostatic potential, and internal energy conversion. Numerical investigation, based on quasi-neutral assumption, is performed for three different regimes: nonrelativistic, weakly relativistic, and relativistic. Ions' front in weakly relativistic regime exhibits spiky structure associated with a break-down of quasi-neutrality at the expanding front. In the relativistic regime, ion velocity is found to reach a saturation limit which occurs at earlier stages of the expansion. This limit is enhanced by higher electron velocity.

  6. Plasma Facing Component Science and Technology for Burning Plasma Experiments

    E-Print Network [OSTI]

    HeatFlux(MW/m2 ) Disruptions Reentry Vehicles Fusion Divertor Fusion First Wall Fast Breeder Fission Reactor Radiant Flux at Sun Surface Rocket Nozzles Comparison Relative Heat Fluxes Fusion Plasma #12;MAU prediction of disruptions about 50 ms before they occur with a >90% accuracy ­ Massive gas puffing

  7. Plasma Chemistry and Plasma Processing, Vol. 12, No.4, 1992 Infrared Radiation from an Arc Plasma and Its

    E-Print Network [OSTI]

    Eagar, Thomas W.

    in the electric field of a charged particle, radiation is emitted. In terms of radiation intensity, electronB ) Plasma Chemistry and Plasma Processing, Vol. 12, No.4, 1992 Infrared Radiation from an Arc ifinfraredradiation from an arc plasma can fie used for diagnostic purposes. Tire properties of IR radiation

  8. Rotation generation and transport in tokamak plasmas

    E-Print Network [OSTI]

    Podpaly, Yuri Anatoly

    2012-01-01T23:59:59.000Z

    Plasma toroidal rotation is a factor important for plasma stability and transport, but it is still a fairly poorly understood area of physics. This thesis focuses on three aspects of rotation: momentum transport, Ohmic ...

  9. Magnetron cathodes in plasma electrode pockels cells

    DOE Patents [OSTI]

    Rhodes, Mark A. (Pleasanton, CA)

    1995-01-01T23:59:59.000Z

    Magnetron cathodes, which produce high current discharges, form greatly improved plasma electrodes on each side of an electro-optic crystal. The plasma electrode has a low pressure gas region on both sides of the crystal. When the gas is ionized, e.g., by a glow discharge in the low pressure gas, the plasma formed is a good conductor. The gas electrode acts as a highly uniform conducting electrode. Since the plasma is transparent to a high energy laser beam passing through the crystal, the plasma is transparent. A crystal exposed from two sides to such a plasma can be charged up uniformly to any desired voltage. A typical configuration utilizes helium at 50 millitorr operating. pressure and 2 kA discharge current. The magnetron cathode produces a more uniform plasma and allows a reduced operating pressure which leads to lower plasma resistivity and a more uniform charge on the crystal.

  10. Methane Conversion by Plasma Assisted Methods

    E-Print Network [OSTI]

    and Helge Egsgaard2 1Optics and Plasma Research Department 2Biosystems Department Risø National Laboratory

  11. Plasma Wakefield Acceleration: How it Works

    SciTech Connect (OSTI)

    None

    2014-11-05T23:59:59.000Z

    This animation explains how electrons can be efficiently accelerated to high energy using wakes created in a plasma.

  12. Characterization of the conduction phase of a plasma opening switch using a hydrogen plasma

    E-Print Network [OSTI]

    Characterization of the conduction phase of a plasma opening switch using a hydrogen plasma J. J Pulsed Power Physics Branch, Plasma Physics Division, Naval Research Laboratory, Washington, D.C. 20375 Y 2004; published online 7 January 2005) Plasma opening switch (POS) experiments were conducted

  13. Laser-plasma diamagnetism in the presence of an ambient magnetized plasma

    E-Print Network [OSTI]

    California at Los Angles, University of

    Laser-plasma diamagnetism in the presence of an ambient magnetized plasma M. VanZeelanda) and W cavity created by a dense laser-produced plasma initially, nlpp /n0 1) expanding into an ambient magnetized background plasma (n0 2 1012 cm 3 ) capable of supporting Alfve´n waves. The experiments

  14. Plasma transport in a converging magnetic field with applications to helicon plasma thrusters

    E-Print Network [OSTI]

    Choueiri, Edgar

    .1, which represents a new design criteria for helicon plasma thrusters. I. Introduction ElectrodelessPlasma transport in a converging magnetic field with applications to helicon plasma thrusters IEPC University, Princeton, New Jersey, 08540, USA Plasma transport in the convergent magnetic field region

  15. High-beta plasma blobs in the morningside plasma sheet G. Haerendel1

    E-Print Network [OSTI]

    Boyer, Edmond

    High-beta plasma blobs in the morningside plasma sheet G. Haerendel1 , W. Baumjohann1 , E about 9i during the late-night/early-morning hours. Very high-plasma beta values were found, varying is known about the origin of the high-beta plasma. It is speculated that the morningside boundary layer

  16. Plasma sweeper to control the coupling of RF power to a magnetically confined plasma

    DOE Patents [OSTI]

    Motley, Robert W. (Princeton, NJ); Glanz, James (Lawrenceville, NJ)

    1985-01-01T23:59:59.000Z

    A device for coupling RF power (a plasma sweeper) from a phased waveguide array for introducing RF power to a plasma having a magnetic field associated therewith comprises at least one electrode positioned near the plasma and near the phased waveguide array; and a potential source coupled to the electrode for generating a static electric field at the electrode directed into the plasma and having a component substantially perpendicular to the plasma magnetic field such that a non-zero vector cross-product of the electric and magnetic fields exerts a force on the plasma causing the plasma to drift.

  17. THE SOLAR WIND PLASMA Dr. Joe Borovsky

    E-Print Network [OSTI]

    Shyy, Wei

    involved multidipole plasma devices. Current research interests focus on structure in the solar wind THE SOLAR WIND PLASMA Dr. Joe Borovsky Los Alamos National Laboratory and University, magnetized, collisionless plasma, important for the geomagnetic activity that it drives at Earth and for its

  18. Planar controlled zone microwave plasma system

    DOE Patents [OSTI]

    Ripley, Edward B. (Knoxville, TN); Seals, Roland D. (Oak Ridge, TN); Morrell, Jonathan S. (Knoxvlle, TN)

    2011-10-04T23:59:59.000Z

    An apparatus and method for initiating a process gas plasma. A conductive plate having a plurality of conductive fingers is positioned in a microwave applicator. An arc forms between the conductive fingers to initiate the formation of a plasma. A transport mechanism may convey process materials through the plasma. A spray port may be provided to expel processed materials.

  19. Burning Plasma Experiment Requirements Presented to

    E-Print Network [OSTI]

    -heating(self-organization?) · Test techniques to control and optimize alpha-dominated plasmas. · Sustain alpha-dominated plasmas ? Test Control and Optimization Techniques >0.5 0.4 to 0.6 10 >3 1 Sustain Alpha Dominated Plasmas >0, possible guided slower speed pellets) First wall materials Be tiles, no carbon First wall cooling

  20. Plasmas are Hot and Fusion is Cool

    SciTech Connect (OSTI)

    None

    2011-01-01T23:59:59.000Z

    Plasmas are Hot and Fusion is Cold. The DOE Princeton Plasma Physics Laboratory (PPPL) collaborates to develop fusion as a safe, clean and abundant energy source for the future. This video discusses PPPL's research and development on plasma, the fourth state of matter.

  1. Hydrodynamics of the cascading plasma

    E-Print Network [OSTI]

    Alex Buchel

    2009-06-03T23:59:59.000Z

    The cascading gauge theory of Klebanov et.al realizes a soluble example of gauge/string correspondence in a non-conformal setting. Such a gauge theory has a strong coupling scale Lambda, below which it confines with a chiral symmetry breaking. A holographic description of a strongly coupled cascading gauge theory plasma is represented by a black brane solution of type IIB supergravity on a conifold with fluxes. A characteristic parameter controlling the high temperature expansion of such plasma is 1/ln(T/Lambda). In this paper we study the speed of sound and the bulk viscosity of the cascading gauge theory plasma to order 1/ln(T/Lambda)^4. We find that the bulk viscosity satisfies the bound conjectured in arXiv:0708.3459. We comment on difficulties of computing the transport coefficients to all orders in T/Lambda. Previously, it was shown that a cascading gauge theory plasma undergoes a first-order deconfinement transition with unbroken chiral symmetry at T_c=0.6141111(3) Lambda. We show here that a deconfined chirally symmetric phase becomes perturbatively unstable at T_u=0.8749(0) T_c. Near the unstable point the specific heat diverges as c_V ~ |1-T_u/T|^(-1/2).

  2. How to model quantum plasmas

    E-Print Network [OSTI]

    G. Manfredi

    2005-05-01T23:59:59.000Z

    Traditional plasma physics has mainly focused on regimes characterized by high temperatures and low densities, for which quantum-mechanical effects have virtually no impact. However, recent technological advances (particularly on miniaturized semiconductor devices and nanoscale objects) have made it possible to envisage practical applications of plasma physics where the quantum nature of the particles plays a crucial role. Here, I shall review different approaches to the modeling of quantum effects in electrostatic collisionless plasmas. The full kinetic model is provided by the Wigner equation, which is the quantum analog of the Vlasov equation. The Wigner formalism is particularly attractive, as it recasts quantum mechanics in the familiar classical phase space, although this comes at the cost of dealing with negative distribution functions. Equivalently, the Wigner model can be expressed in terms of $N$ one-particle Schr{\\"o}dinger equations, coupled by Poisson's equation: this is the Hartree formalism, which is related to the `multi-stream' approach of classical plasma physics. In order to reduce the complexity of the above approaches, it is possible to develop a quantum fluid model by taking velocity-space moments of the Wigner equation. Finally, certain regimes at large excitation energies can be described by semiclassical kinetic models (Vlasov-Poisson), provided that the initial ground-state equilibrium is treated quantum-mechanically. The above models are validated and compared both in the linear and nonlinear regimes.

  3. Princeton University Plasma Physics Laboratory

    E-Print Network [OSTI]

    : Manickam, J., McGuire, K.M., Monticello, D., Nagayama, Y., Park, W., Taylor, G., Drake, J.F., Kleva, R Simulations of Beam­Fueled Supershot­like Plasmas Budny, R.V. 14 pgs. Near Ignition Preprint: March 1993, S.A., Scott, S.D., Stotler, D., Wieland, R., Zarnstorff, M., Zweben, S.J. #12; ­3­ PPPL­2880

  4. Princeton University Plasma Physics Laboratory

    E-Print Network [OSTI]

    : Manickam, J., McGuire, K.M., Monticello, D., Nagayama, Y., Park, W., Taylor, G., Drake, J.F., Kleva, R Simulations of Beam-Fueled Supershot-like Plasmas Budny, R.V. 14 pgs. Near Ignition Preprint: March 1993, S.A., Scott, S.D., Stotler, D., Wieland, R., Zarnstorff, M., Zweben, S.J. #12;-3- PPPL-2880

  5. VISUALIZATION OF MAGNETICALLY CONFINED PLASMAS

    E-Print Network [OSTI]

    of the fusion energy research community. There is presently a great imbalance in the world energy consumption. As an example, in 1990, the per capita consumption of energy in India and China were 1/6 and 1/3 of the world Plasma Physics Laboratory Princeton NJ 08543, USA December 3, 1999 Abstract With the rapid developments

  6. VISUALIZATION OF MAGNETICALLY CONFINED PLASMAS

    E-Print Network [OSTI]

    imbalance in the world energy consumption. As an example, in 1990, the per capita consumption of energy, Princeton Plasma Physics Laboratory Princeton NJ 08543, USA November 30, 1999 Abstract With the rapid developments in experimental and theoretical fu- sion energy research towards more geometric details

  7. Feasibility Study for a Plasma Dynamo Facility to Investigate Fundamental Processes in Plasma Astrophysics. Final report

    SciTech Connect (OSTI)

    Forest, Cary B.

    2013-09-19T23:59:59.000Z

    The scientific equipment purchased on this grant was used on the Plasma Dynamo Prototype Experiment as part of Professor Forest's feasibility study for determining if it would be worthwhile to propose building a larger plasma physics experiment to investigate various fundamental processes in plasma astrophysics. The initial research on the Plasma Dynamo Prototype Experiment was successful so Professor Forest and Professor Ellen Zweibel at UW-Madison submitted an NSF Major Research Instrumentation proposal titled "ARRA MRI: Development of a Plasma Dynamo Facility for Experimental Investigations of Fundamental Processes in Plasma Astrophysics." They received funding for this project and the Plasma Dynamo Facility also known as the "Madison Plasma Dynamo Experiment" was constructed. This experiment achieved its first plasma in the fall of 2012 and U.S. Dept. of Energy Grant No. DE-SC0008709 "Experimental Studies of Plasma Dynamos," now supports the research.

  8. Aerospace & Energetics Research Program -University of Washington Plasma Dynamics Group

    E-Print Network [OSTI]

    Shumlak, Uri

    of Washington Plasma Dynamics Group q The Boltzmann equation is seven dimensional. q As a consequence plasmaAerospace & Energetics Research Program - University of Washington Plasma Dynamics Group Plasma Plasma Dynamics Group Abstract Many current plasma simulation codes are based on the magnetohydrodynamic

  9. Miniaturized cathodic arc plasma source

    DOE Patents [OSTI]

    Anders, Andre (Albany, CA); MacGill, Robert A. (Richmond, CA)

    2003-04-15T23:59:59.000Z

    A cathodic arc plasma source has an anode formed of a plurality of spaced baffles which extend beyond the active cathode surface of the cathode. With the open baffle structure of the anode, most macroparticles pass through the gaps between the baffles and reflect off the baffles out of the plasma stream that enters a filter. Thus the anode not only has an electrical function but serves as a prefilter. The cathode has a small diameter, e.g. a rod of about 1/4 inch (6.25 mm) diameter. Thus the plasma source output is well localized, even with cathode spot movement which is limited in area, so that it effectively couples into a miniaturized filter. With a small area cathode, the material eroded from the cathode needs to be replaced to maintain plasma production. Therefore, the source includes a cathode advancement or feed mechanism coupled to cathode rod. The cathode also requires a cooling mechanism. The movable cathode rod is housed in a cooled metal shield or tube which serves as both a current conductor, thus reducing ohmic heat produced in the cathode, and as the heat sink for heat generated at or near the cathode. Cooling of the cathode housing tube is done by contact with coolant at a place remote from the active cathode surface. The source is operated in pulsed mode at relatively high currents, about 1 kA. The high arc current can also be used to operate the magnetic filter. A cathodic arc plasma deposition system using this source can be used for the deposition of ultrathin amorphous hard carbon (a-C) films for the magnetic storage industry.

  10. Glossary of Technical Terms Technical Terms

    E-Print Network [OSTI]

    del Moral, Roger

    vegetation is in equilibrium with climatic and biotic factors such that no further directional change composi- tion. alternative stable states: as above, but showing no signs of further successional change causes detrimental effects on another by the denial of a limited resource, e.g., nitrogen, light or water

  11. Monthly energy review, September 1991. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-09-26T23:59:59.000Z

    This publication presents current data on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international production of crude oil, consumption of petroleum products, petroleum stocks, and production of electricity from nuclear-powered facilities. 36 figs., 57 tabs.

  12. Petroleum Supply Monthly, September 1990. [Contains glossary

    SciTech Connect (OSTI)

    Whited, D.; Jacobus, P. (eds.)

    1990-11-28T23:59:59.000Z

    Data presented in this PSM describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in Primary Supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. 12 figs., 46 tabs.

  13. Petroleum supply monthly, October 1991. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-10-30T23:59:59.000Z

    Data presented in this report describe the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in Primary Supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importer, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. Data are divided into two sections (1) the Summary Statistics and (2) the Detailed Statistics 14 figs., 56 tabs.

  14. Monthly energy review, October 1991. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-10-25T23:59:59.000Z

    This report presents current data on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international production of crude oil, consumption of petroleum products, petroleum stocks, and production of electricity from nuclear-powered facilities. 36 figs., 57 tabs.

  15. Petroleum supply monthly, October 1990. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1990-12-27T23:59:59.000Z

    Data presented in this report describes the supply and disposition of petroleum products in the United States and major US geographic regions. The data series describe production, imports and exports, inter-Petroleum Administration for Defense (PAD) District movements, and inventories by the primary suppliers of petroleum products in the United States (50 States and the District of Columbia). The reporting universe includes those petroleum sectors in Primary Supply. Included are: petroleum refiners, motor gasoline blenders, operators of natural gas processing plants and fractionators, inter-PAD transporters, importers, and major inventory holders of petroleum products and crude oil. When aggregated, the data reported by these sectors approximately represent the consumption of petroleum products in the United States. 12 figs., 54 tabs.

  16. International energy annual 1990. [Contains Glossary

    SciTech Connect (OSTI)

    none,

    1992-01-23T23:59:59.000Z

    The International Energy Annual presents current data and trends for production, consumption, imports, and exports of primary energy commodities in more than 190 countries, dependencies, and area of special sovereignty. Also included are prices on crude oil, petroleum products, natural gas, electricity, and coal in selected countries. (VC)

  17. Electric power monthly, October 1991. [CONTAINS GLOSSARY

    SciTech Connect (OSTI)

    Not Available

    1991-10-11T23:59:59.000Z

    This publication provides monthly statistics at the national, Census division, and State levels for net generation, fuel consumption, fuel stocks, quantity and quality of fuel, cost of fuel, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fuel are also displayed at the North American Electric Reliability Council (NERC) region level. Additionally, statistics at the company and plant level are published in the EPM on capability of new plants, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fuel. 4 figs., 63 tabs.

  18. Electric Power Monthly, September 1991. [CONTAINS GLOSSARY

    SciTech Connect (OSTI)

    Not Available

    1991-09-12T23:59:59.000Z

    This publication provides monthly statistics at the national, Census division, and state levels for net generation, fuel consumption, fuel stocks, quantity and quality of fuel, cost of fuel, electricity sales, revenue, and average revenue per kilowatthour of electricity sold. Data on net generation, fuel consumption, fuel stocks, quantity and cost of fuel are also displayed at the North American Electric Reliability Council (NERC) region level. Additionally, statistics at the company and plant level are published in the EPM on capability of new plants, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fuel. 4 figs., 63 tabs.

  19. Monthly energy review, July 1991. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-07-25T23:59:59.000Z

    The Monthly Energy Review presents current data on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international production of crude oil, consumption of petroleum products, petroleum stocks, and production of electricity from nuclear-powered facilities.

  20. Monthly energy review, March 1993. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1993-03-26T23:59:59.000Z

    Contains summary data on petroleum, natural gas, coal, electricity, and nuclear energy relative to consumption, distribution, end-use, generation, imports, supply and demand, production, prices, global aspects, and international energy.

  1. Monthly energy review, June 1991. [CONTAINS GLOSSARY

    SciTech Connect (OSTI)

    Not Available

    1991-06-26T23:59:59.000Z

    The Monthly Energy Review presents current data on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international production of crude oil, consumption of petroleum products, petroleum stocks, and production of electricity from nuclear-powered facilities.

  2. Monthly energy review, September 1992. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1992-09-24T23:59:59.000Z

    This report presents data on the following various energy topics and sources: Energy overview; energy consumption; petroleum; natural gas; oil and gas resource development; coal; electricity; nuclear energy; energy prices; and international energy.

  3. Monthly energy review, September 1990. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1990-12-21T23:59:59.000Z

    This report presents current data on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international production of crude oil, consumption of petroleum products, petroleum stocks, and production of electricity from nuclear-powered facilities.

  4. Monthly energy review, August 1991. [CONTAINS GLOSSARY

    SciTech Connect (OSTI)

    Not Available

    1991-08-26T23:59:59.000Z

    This publication presents current data on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international production of crude oil, consumption of petroleum products, petroleum stocks, and production of electricity from nuclear-powered facilities.

  5. Monthly energy review, February 1993. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1993-02-24T23:59:59.000Z

    Contains summary data on petroleum, natural gas, coal, electricity, and nuclear energy relative to consumption, distribution, end-use, generation, imports, supply and demand, production, prices, global aspects, and international markets.

  6. Monthly energy review, May 1992. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1992-05-26T23:59:59.000Z

    The Monthly Energy Review is prepared by the Energy Information Administration. Statistical data and information are provided on the topics of energy production and consumption, petroleum, natural gas, oil and gas resource development, coal, electricity, nuclear energy, energy prices, and international energy.

  7. Monthly energy review, May 1991. [CONTAINS GLOSSARY

    SciTech Connect (OSTI)

    Not Available

    1991-05-28T23:59:59.000Z

    This report presents current data on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international production of crude oil, consumption of petroleum products, petroleum stocks, and production of electricity from nuclear-powered facilities. 58 tabs.

  8. Monthly energy review, February 1992. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1992-02-26T23:59:59.000Z

    The Monthly Energy Review is prepared by the Energy Information Administration. Statistical data and information has been compiled for the following topics: Energy Overview, Energy Consumption, Petroleum, Natural Gas, Oil and Gas Resource Development, Coal, Electricity, Nuclear Energy, Energy Prices, International Energy.

  9. Monthly energy review, April 1993. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1993-04-28T23:59:59.000Z

    Energy production during January 1993 totaled 5.7 quadrillion Btu, a 3.3-percent decrease compared with the level of production during January 1992. Coal production decreased 9.9 percent, petroleum production dropped 3.9 percent, and natural gas production increased 0.5 percent. All other forms of energy production combined were up 4.9 percent from the level of reduction during January 1992. Energy consumption during January 1993 totaled 7.7 quadrillion Btu, 0.4 percent above the level of consumption during January 1992. Coal consumption increased 2.2 percent, natural gas consumption was up 1.3 percent, and petroleum consumption dropped 2.8 percent. Consumption of all other forms of energy combined increased 5.1 percent compared with the level 1 year earlier.

  10. Monthly energy review, December 1992. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1992-12-22T23:59:59.000Z

    The Monthly Energy Review contains summary data on energy consumption, petroleum, natural gas, oil and gas resource development, coal, electricity, nuclear energy, energy prices, and international energy.

  11. Monthly energy review, November 1992. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1992-11-24T23:59:59.000Z

    Contains summary data on petroleum, natural gas, coal, electricity, and nuclear energy relative to consumption, distribution, end-use, generation, imports, supply and demand, production, prices, global aspects, and international markets.

  12. Monthly energy review, January 1992. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1992-01-28T23:59:59.000Z

    Monthly Energy Review contains statistical information on energy sources including petroleum, natural gas, coal and nuclear energy. Information on energy consumption, oil and gas resource development, electricity, energy prices and international energy is provided. (VC)

  13. Monthly energy review, January 1993. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1993-01-26T23:59:59.000Z

    The Monthly Energy Review contains summary data on energy consumption, petroleum, natural gas, oil and gas resource development, coal, electricity, nuclear energy, energy prices, and international energy.

  14. Monthly energy review, August 1992. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1992-08-25T23:59:59.000Z

    This publication presents information and compiled data on energy sources. The following information is presented: energy overview; energy consumption; petroleum; natural gas; oil and gas resource development; coal; electricity; nuclear energy; energy prices; and international energy.

  15. Monthly energy review, November 1991. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-11-25T23:59:59.000Z

    This report presents current data on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international production of crude oil, consumption of petroleum products, petroleum stocks, and production of electricity from nuclear-powered facilities. 30 figs., 57 tabs.

  16. Monthly energy review, January 1991. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1991-01-25T23:59:59.000Z

    This report presents current data on production, consumption, stocks, imports, exports, and prices of the principal energy commodities in the United States. Also included are data on international production of crude oil, consumption of petroleum products, petroleum stocks, and production of electricity from nuclear-powered facilities.

  17. Natural gas monthly, May 1988. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1988-07-28T23:59:59.000Z

    Gross withdrawals of natural gas (wet, after lease separation) from gas and oil wells in the United States during May 1988, were estimated at 1632 billion cubic feet, 1.3 percent above withdrawals during May 1987. Of the total quantity, an estimated 179 billion cubic feet were returned to gas and oil reservoirs for repressuring, pressure maintenance, and cycling; 10 billion cubic feet were vented or flared; and 33 billion cubic feet of nonhydrocarbon gases were removed. The remaining wet marketed production totaled 1410 billion cubic feet. Dry gas production (wet marketed production minus 67 billion cubic feet of extraction loss) totaled an estimated 1343 billion cubic feet, 1.7 percent above the May 1987 level. The total dry gas supply available for disposition in May 1988 was estimated at 1490 billion cubic feet, including 35 billion cubic feet withdrawn from storage, 11 billion cubic feet of supplemental supplies, and 101 billion cubic feet that were imported. In May 1987, dry gas available for disposition totaled 1419 billion cubic feet. Of the total dry gas supply available for disposition in May 1988, an estimated 1259 billion cubic feet were consumed, 294 billion cubic feet were injected into underground storage reservoirs, and 5 billion cubic feet were exported, leaving 68 billion cubic feet unaccounted for.

  18. Natural gas monthly, October 1990. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1990-12-28T23:59:59.000Z

    This report highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. 7 figs., 34 tabs.

  19. GLOSSARY OF WATER RESOURCES TERMS Compiled by

    E-Print Network [OSTI]

    District of Columbia, University of the

    ....................................................................................................109 The activities on which this report is based were financed in part by the Department resulting in land build-up. Acid Mine - Drainage - the water discharge from coal mines, usually highly and is equivalent to 46,560 cubic feet or about 326,000 gallons or 1,233 cubic meters. Activated Carbon Filter

  20. Petroleum Supply Monthly, June 1984. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1984-08-01T23:59:59.000Z

    This issue features a mid-year petroleum review. The article discusses changes in consumption, domestic crude oil production, exploration and development activity, refinery operations, foreign trade, stocks (including the Strategic Petroleum Reserve), and prices. A special summary of changes in petroleum imports is included. The Petroleum Supply Reporting System is reviewed.

  1. Glossary of Environment, Safety and Health Terms

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

    areas or other areas where earthwork is occurring. Derived from 40 CFR 57.103(m) 78. FUSION. The combining of two light nuclei (such as hydrogen isotopes or lithium) to form a...

  2. Guidelines for Home Energy Professionals Project Glossary

    Broader source: Energy.gov [DOE]

    This document contains key terms and definitions used in the Guidelines for Home Energy Professionals Project.

  3. Petroleum Marketing Monthly, January 1991. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1991-01-09T23:59:59.000Z

    The Petroleum Marketing Monthly (PMM) is designed to give information and statistical data about a variety of crude oils and refined petroleum products. The publication provides statistics on crude oil costs and refined petroleum products sales for use by industry, government, private sector analysts, educational institutions, and consumers. Data on crude oil include the domestic first purchase price, the f.o.b. and landed cost of imported crude oil, and the refiners' acquisition cost of crude oil. Sales data for motor gasoline, distillates, residuals, aviation fuels, kerosene, and propane are presented. 12 figs., 55 tabs.

  4. Petroleum marketing monthly, November 1991. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-11-07T23:59:59.000Z

    The Petroleum Marketing Monthly is designed to give information and statistical data about a variety of crude oils and refined petroleum products. The publication provides statistics on crude oil costs and refined petroleum products sales for use by industry, government, private sector analysts, educational institutions, and consumers. Data on crude oil include the domestic first purchase price, the f.o.b. and landed cost of imported crude oil, and the refiners' acquisition cost of crude oil. Sales data for motor gasoline, distillates, residuals, aviation fuels, kerosene, and propane are presented. 12 figs., 53 tabs.

  5. Natural gas monthly, September 1991. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-10-18T23:59:59.000Z

    The Natural Gas Monthly highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production distribution consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. From time to time, the NGM features articles designed to assist readers in using and interpreting natural gas information. The data in this publication are collected on surveys conducted by the EIA to fulfill its responsibilities for gathering and reporting energy data. Some of the data are collected under the authority of the Federal Energy Regulatory Commission (FERC), an independent commission within the DOE, which has jurisdiction primarily in the regulation of electric utilities and the interstate natural gas industry. Geographic coverage is the 50 States and the District of Columbia.

  6. Natural gas monthly, September 1990. [Contains Glossary

    SciTech Connect (OSTI)

    Not Available

    1990-11-30T23:59:59.000Z

    This report highlights activities, events, and analyses of interest to public and private sector organizations associated with the natural gas industry. Volume and price data are presented each month for natural gas production, distribution, consumption, and interstate pipeline activities. Producer-related activities and underground storage data are also reported. 7 figs., 33 tabs.

  7. Rock mechanics models evaluation report. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1987-08-01T23:59:59.000Z

    This report documents the evaluation of the thermal and thermomechanical models and codes for repository subsurface design and for design constraint analysis. The evaluation was based on a survey of the thermal and thermomechanical codes and models that are applicable to subsurface design, followed by a Kepner-Tregoe (KT) structured decision analysis of the codes and models. The primary recommendations of the analysis are that the DOT code be used for two-dimensional thermal analysis and that the STEALTH and HEATING 5/6 codes be used for three-dimensional and complicated two-dimensional thermal analysis. STEALTH and SPECTROM 32 are recommended for thermomechanical analyses. The other evaluated codes should be considered for use in certain applications. A separate review of salt creep models indicate that the commonly used exponential time law model is appropriate for use in repository design studies. 38 refs., 1 fig., 7 tabs.

  8. Petroleum marketing monthly, October 1991. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-10-10T23:59:59.000Z

    This report is designed to give information and statistical data about a variety of crude oils and refined petroleum products. The publication provides statistics on crude oil costs and refined petroleum products sales for use by industry, government, private sector analysts, educational institutions, and consumers. Data on crude oil include the domestic first purchase price, the f.o.b. and landed cost of imported crude oil, and the refiner's acquisition cost of crude oil. Sales data for motor gasoline, distillates, residuals, aviation fuels, kerosene, and propane are presented. 12 figs., 55 tabs.

  9. Your Global Inspection Solution 2 Glossary............................................................3

    E-Print Network [OSTI]

    for Fisheries on a recommendation for civil or criminal action. Program participants and marketers are required. Original and private label logos/brand names and their supporting statements may not use, incorporate

  10. Electric power annual 1989. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-01-17T23:59:59.000Z

    This publication presents a summary of electric utility statistics at the national, regional and state levels. The Industry At A Glance'' section presents a profile of the electric power industry ownership and performance; a review of key statistics for the year; and projections for various aspects of the electric power industry through 2010. Subsequent sections present data on generating capability, including proposed capability additions; net generation; fossil-fuel statistics; electricity sales, revenue and average revenue per kilowatthour sold; financial statistics; environmental statistics; and electric power transactions. In addition, the appendices provide supplemental data on major disturbances and unusual occurrences. Each section contains related text and tables and refers the reader to the appropriate publication that contains more detailed data on the subject matter. 24 figs., 57 tabs.

  11. Human retroviruses and AIDS, 1991. [CONTAINS GLOSSARY

    SciTech Connect (OSTI)

    Myers, G.; Korber, B. (eds.) (Los Alamos National Lab., NM (USA)); Berzofsky, J.A.; Pavlakis, G.N. (eds.) (National Cancer Inst., Bethesda, MD (USA)); Smith, R.F. (ed.) (Harvard Univ. (USA))

    1991-05-01T23:59:59.000Z

    This compendium and the accompanying floppy diskettes are the result of an effort to compile and rapidly publish all relevant molecular data concerning the human immunodeficiency viruses (HIV) and related retroviruses.The scope of the compendium and database is best summarized by the five parts that it comprises: (1) HIV and SIV Nucleotide Sequences; (2) Amino Acid Sequences; (3) Analyses; (4) Related Sequences; and (5) Database Communications. Information within all the parts is updated at least twice in each year, which accounts for the modes of binding and pagination in the compendium.

  12. Electric power monthly, September 1990. [Glossary included

    SciTech Connect (OSTI)

    Not Available

    1990-12-17T23:59:59.000Z

    The purpose of this report is to provide energy decision makers with accurate and timely information that may be used in forming various perspectives on electric issues. The power plants considered include coal, petroleum, natural gas, hydroelectric, and nuclear power plants. Data are presented for power generation, fuel consumption, fuel receipts and cost, sales of electricity, and unusual occurrences at power plants. Data are compared at the national, Census division, and state levels. 4 figs., 52 tabs. (CK)

  13. Electric power monthly, January 1991. [Contains glossary

    SciTech Connect (OSTI)

    Not Available

    1991-01-17T23:59:59.000Z

    This publication provides monthly statistics at the national, Census division, and state levels for net generation, fuel consumption, fuel stocks, quantity and quality of fuel, cost of fuel, electricity sales, and average revenue per kilowatthour of electricity sold. Data on net generation are also displayed at the North American Electric Reliability Council (NERC) region level. Additionally, company and plant level information are published in the EPM on capability of new plants, net generation, fuel consumption, fuel stocks, quantity and quality of fuel, and cost of fuel. 4 figs., 48 tabs.

  14. Glossary and Acronyms | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 RussianBy: Thomas P. D'Agostino,Glen Wattman - Director, Office of

  15. Glossary of Terms | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 RussianBy: Thomas P. D'Agostino,Glen Wattman - Director, Office ofHere you'llTERM

  16. Glossary of water terminology | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEI Reference LibraryAddInformationEnergyEnergyGWECC

  17. Stanford University Glossary of Clinical Trials Terms

    E-Print Network [OSTI]

    Puglisi, Joseph

    to participate in ongoing clinical trials. OFF-LABEL USE A drug prescribed for conditions other than those approved by the FDA. OPEN-LABEL TRIAL A clinical trial in which doctors & participants know which drug labeling. PHASE IV TRIALS Post-marketing studies to delineate additional information including the drug

  18. Shale Gas Glossary | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreakingMay 2015ParentsMiddle|SecurityDepartment ofSeptemberAir ShaleWater Shale

  19. Solar Energy Glossary | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently AskedEnergyIssues DOE's Nuclear EnergySmart Meters and|Water HeatEvolution

  20. Microsoft Word - Glossary_June15.docx

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1Stocks Nov-14 Dec-14 Jan-15LiquidBG NorthandEnergyConti,09GE

  1. Microsoft Word - Glossary_2009April20.doc

    Gasoline and Diesel Fuel Update (EIA)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for On-Highway4,1,50022,3,,,,6,1,9,1,50022,3,,,,6,1,Decade EnergyTennesseeYearUndergroundCubicDecadeFeet)Proved 3Adopted by

  2. Glossary: Energy-Related Carbon Emissions

    Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122 40CoalLease(Billion2,12803 Table A1.GasYearper Thousand Cubic Feet)2.46 60

  3. Project Financing Glossary | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn April 23, 2014, an OHASeptember 2010 | Department ofPlantLong Island HTS Power

  4. NREL: Biomass Research - Glossary of Biomass Terms

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Saleshttp://www.fnal.gov/directorate/nalcal/nalcal02_07_05_files/nalcal.gifNREL NRELChemical and Catalyst ScienceFacilities

  5. Plasma Basics Plasma is often called the "Fourth State of Matter". Although found in virtually every home and business,

    E-Print Network [OSTI]

    Plasma Basics Plasma is often called the "Fourth State of Matter". Although found in virtually every home and business, gas plasma is not well known. In fact, plasma is quite common - it is estimated that 99% of the visible universe consists of plasma. Earthbound plasmas include lightning, fluorescent

  6. Interpenetration and stagnation in colliding laser plasmas

    SciTech Connect (OSTI)

    Al-Shboul, K. F. [Center for Materials Under eXtreme Environment, School of Nuclear Engineering, Purdue University, West Lafayette, Indiana 47907 (United States) [Center for Materials Under eXtreme Environment, School of Nuclear Engineering, Purdue University, West Lafayette, Indiana 47907 (United States); Department of Nuclear Engineering, Jordan University of Science and Technology, Irbid 22110 (Jordan); Harilal, S. S., E-mail: hari@purdue.edu; Hassan, S. M.; Hassanein, A. [Center for Materials Under eXtreme Environment, School of Nuclear Engineering, Purdue University, West Lafayette, Indiana 47907 (United States)] [Center for Materials Under eXtreme Environment, School of Nuclear Engineering, Purdue University, West Lafayette, Indiana 47907 (United States); Costello, J. T. [School of Physical Sciences and NCPST, Dublin City University, Dublin 9 (Ireland)] [School of Physical Sciences and NCPST, Dublin City University, Dublin 9 (Ireland); Yabuuchi, T.; Tanaka, K. A. [Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 5650871 (Japan)] [Graduate School of Engineering, Osaka University, Yamada-oka 2-1, Suita, Osaka 5650871 (Japan); Hirooka, Y. [National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu (Japan)] [National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu (Japan)

    2014-01-15T23:59:59.000Z

    We have investigated plasma stagnation and interaction effects in colliding laser-produced plasmas. For generating colliding plasmas, two split laser beams were line-focused onto a hemi-circular target and the seed plasmas so produced were allowed to expand in mutually orthogonal directions. This experimental setup forced the expanding seed plasmas to come to a focus at the center of the chamber. The interpenetration and stagnation of plasmas of candidate fusion wall materials, viz., carbon and tungsten, and other materials, viz., aluminum, and molybdenum were investigated in this study. Fast-gated imaging, Faraday cup ion analysis, and optical emission spectroscopy were used for diagnosing seed and colliding plasma plumes. Our results show that high-Z target (W, Mo) plasma ions interpenetrate each other, while low-Z (C, Al) plasmas stagnate at the collision plane. For carbon seed plasmas, an intense stagnation was observed resulting in longer plasma lifetime; in addition, the stagnation layer was found to be rich with C{sub 2} dimers.

  7. Oscillating plasma bubbles. II. Pulsed experiments

    SciTech Connect (OSTI)

    Stenzel, R. L.; Urrutia, J. M. [Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States)

    2012-08-15T23:59:59.000Z

    Time-dependent phenomena have been investigated in plasma bubbles which are created by inserting spherical grids into an ambient plasma and letting electrons and ions form a plasma of different parameters than the ambient one. There are no plasma sources inside the bubble. The grid bias controls the particle flux. There are sheaths on both sides of the grid, each of which passes particle flows in both directions. The inner sheath or plasma potential develops self consistently to establish charge neutrality and divergence free charge and mass flows. When the electron supply is restricted, the inner sheath exhibits oscillations near the ion plasma frequency. When all electrons are excluded, a virtual anode forms on the inside sheath, reflects all ions such that the bubble is empty. By pulsing the ambient plasma, the lifetime of the bubble plasma has been measured. In an afterglow, plasma electrons are trapped inside the bubble and the bubble decays as slow as the ambient plasma. Pulsing the grid voltage yields the time scale for filling and emptying the bubble. Probes have been shown to modify the plasma potential. Using pulsed probes, transient ringing on the time scale of ion transit times through the bubble has been observed. The start of sheath oscillations has been investigated. The instability mechanism has been qualitatively explained. The dependence of the oscillation frequency on electrons in the sheath has been clarified.

  8. Plasma plume MHD power generator and method

    DOE Patents [OSTI]

    Hammer, James H. (Livermore, CA)

    1993-01-01T23:59:59.000Z

    Highly-conducting plasma plumes are ejected across the interplanetary magnetic field from a situs that is moving relative to the solar wind, such as a spacecraft or an astral body, such as the moon, having no magnetosphere that excludes the solar wind. Discrete plasma plumes are generated by plasma guns at the situs extending in opposite directions to one another and at an angle, preferably orthogonal, to the magnetic field direction of the solar wind plasma. The opposed plumes are separately electrically connected to their source by a low impedance connection. The relative movement between the plasma plumes and the solar wind plasma creates a voltage drop across the plumes which is tapped by placing the desired electrical load between the electrical connections of the plumes to their sources. A portion of the energy produced may be used in generating the plasma plumes for sustained operation.

  9. Atmospheric Pressure Plasma Process And Applications

    SciTech Connect (OSTI)

    Peter C. Kong; Myrtle

    2006-09-01T23:59:59.000Z

    This paper provides a general discussion of atmospheric-pressure plasma generation, processes, and applications. There are two distinct categories of atmospheric-pressure plasmas: thermal and nonthermal. Thermal atmospheric-pressure plasmas include those produced in high intensity arcs, plasma torches, or in high intensity, high frequency discharges. Although nonthermal plasmas are at room temperatures, they are extremely effective in producing activated species, e.g., free radicals and excited state atoms. Thus, both thermal and nonthermal atmosphericpressure plasmas are finding applications in a wide variety of industrial processes, e.g. waste destruction, material recovery, extractive metallurgy, powder synthesis, and energy conversion. A brief discussion of recent plasma technology research and development activities at the Idaho National Laboratory is included.

  10. Steady state compact toroidal plasma production

    DOE Patents [OSTI]

    Turner, William C. (Livermore, CA)

    1986-01-01T23:59:59.000Z

    Apparatus and method for maintaining steady state compact toroidal plasmas. A compact toroidal plasma is formed by a magnetized coaxial plasma gun and held in close proximity to the gun electrodes by applied magnetic fields or magnetic fields produced by image currents in conducting walls. Voltage supply means maintains a constant potential across the electrodes producing an increasing magnetic helicity which drives the plasma away from a minimum energy state. The plasma globally relaxes to a new minimum energy state, conserving helicity according to Taylor's relaxation hypothesis, and injecting net helicity into the core of the compact toroidal plasma. Controlling the voltage so as to inject net helicity at a predetermined rate based on dissipative processes maintains or increases the compact toroidal plasma in a time averaged steady state mode.

  11. Neutral-plasma interactions are expected to have a significant influence on edge plasma conditions in the edge region of a tokamak plasma, and thus

    E-Print Network [OSTI]

    Hughes, Jerry

    Neutral-plasma interactions are expected to have a significant influence on edge plasma conditions in the edge region of a tokamak plasma, and thus on global plasma confinement. In particular, the particle source from ionization should be considered in the study of plasma transport within the H-mode pedestal

  12. Redshift of photons penetrating a hot plasma

    E-Print Network [OSTI]

    Ari Brynjolfsson

    2005-10-07T23:59:59.000Z

    A new interaction, plasma redshift, is derived, which is important only when photons penetrate a hot, sparse electron plasma. The derivation of plasma redshift is based entirely on conventional axioms of physics. When photons penetrate a cold and dense plasma, they lose energy through ionization and excitation, Compton scattering on the individual electrons, and Raman scattering on the plasma frequency. But in sparse hot plasma, such as in the solar corona, the photons lose energy also in plasma redshift. The energy loss per electron in the plasma redshift is about equal to the product of the photon's energy and one half of the Compton cross-section per electron. In quiescent solar corona, this heating starts in the transition zone to the corona and is a major fraction of the coronal heating. Plasma redshift contributes also to the heating of the interstellar plasma, the galactic corona, and the intergalactic plasma. Plasma redshift explains the solar redshifts, the redshifts of the galactic corona, the cosmological redshifts, the cosmic microwave background, and the X-ray background. The plasma redshift explains the observed magnitude-redshift relation for supernovae SNe Ia without the big bang, dark matter, or dark energy. There is no cosmic time dilation. The universe is not expanding. The plasma redshift, when compared with experiments, shows that the photons' classical gravitational redshifts are reversed as the photons move from the Sun to the Earth. This is a quantum mechanical effect. As seen from the Earth, a repulsion force acts on the photons. This means that there is no need for Einstein's Lambda term. The universe is quasi-static, infinite, and everlasting.

  13. Plasma conductivity at finite coupling

    E-Print Network [OSTI]

    Babiker Hassanain; Martin Schvellinger

    2011-08-31T23:59:59.000Z

    By taking into account the full order(\\alpha'^3) type IIB string theory corrections to the supergravity action, we compute the leading finite 't Hooft coupling order(\\lambda^{-3/2}) corrections to the conductivity of strongly-coupled SU(N) {\\cal {N}}=4 supersymmetric Yang-Mills plasma in the large N limit. We find that the conductivity is enhanced by the corrections, in agreement with the trend expected from previous perturbative weak-coupling computations.

  14. Cyclotron resonance in plasma flow

    SciTech Connect (OSTI)

    Artemyev, A. V.; Agapitov, O. V.; Krasnoselskikh, V. V. [LPC2E/CNRS-University of Orleans, Orleans (France)] [LPC2E/CNRS-University of Orleans, Orleans (France)

    2013-12-15T23:59:59.000Z

    This paper is devoted to the mechanism of particle acceleration via resonant interaction with the electromagnetic circular wave propagating along the inhomogeneous background magnetic field in the presence of a plasma flow. We consider the system where the plasma flow velocity is large enough to change the direction of wave propagation in the rest frame. This system mimics a magnetic field configuration typical for inner structure of a quasi-parallel shock wave. We consider conditions of gyroresonant interaction when the force corresponding to an inhomogeneity of the background magnetic field is compensated by the Lorentz force of the wave-magnetic field. The wave-amplitude is assumed to be about 10% of the background magnetic field. We show that particles can gain energy if kv{sub sw}>?>kv{sub sw}??{sub c} where k is the wave number, v{sub sw} is a plasma flow velocity, and ? and ?{sub c} are the wave frequency and the particle gyrofrequency, respectively. This mechanism of acceleration resembles the gyrosurfing mechanism, but the effect of the electrostatic field is replaced by the effect of the magnetic field inhomogeneity.

  15. Characterization of jovian plasma embedded dust particles

    E-Print Network [OSTI]

    Amara L. Graps

    2006-09-12T23:59:59.000Z

    As the data from space missions and laboratories improve, a research domain combining plasmas and charged dust is gaining in prominence. Our solar system provides many natural laboratories such as planetary rings, comet comae and tails, ejecta clouds around moons and asteroids, and Earth's noctilucent clouds for which to closely study plasma-embedded cosmic dust. One natural laboratory to study electromagnetically-controlled cosmic dust has been provided by the Jovian dust streams and the data from the instruments which were on board the Galileo spacecraft. Given the prodigious quantity of dust poured into the Jovian magnetosphere by Io and its volcanoes resulting in the dust streams, the possibility of dusty plasma conditions exist. This paper characterizes the main parameters for those interested in studying dust embedded in a plasma with a focus on the Jupiter environment. I show how to distinguish between dust-in-plasma and dusty-plasma and how the Havnes parameter P can be used to support or negate the possibility of collective behavior of the dusty plasma. The result of applying these tools to the Jovian dust streams reveals mostly dust-in-plasma behavior. In the orbits displaying the highest dust stream fluxes, portions of orbits E4, G7, G8, C21 satisfy the minimum requirements for a dusty plasma. However, the P parameter demonstrates that these mild dusty plasma conditions do not lead to collective behavior of the dust stream particles.

  16. Plasma arc torch with coaxial wire feed

    DOE Patents [OSTI]

    Hooper, Frederick M (Albuquerque, NM)

    2002-01-01T23:59:59.000Z

    A plasma arc welding apparatus having a coaxial wire feed. The apparatus includes a plasma arc welding torch, a wire guide disposed coaxially inside of the plasma arc welding torch, and a hollow non-consumable electrode. The coaxial wire guide feeds non-electrified filler wire through the tip of the hollow non-consumable electrode during plasma arc welding. Non-electrified filler wires as small as 0.010 inches can be used. This invention allows precision control of the positioning and feeding of the filler wire during plasma arc welding. Since the non-electrified filler wire is fed coaxially through the center of the plasma arc torch's electrode and nozzle, the wire is automatically aimed at the optimum point in the weld zone. Therefore, there is no need for additional equipment to position and feed the filler wire from the side before or during welding.

  17. Boundary Plasma Turbulence Simulations for Tokamaks

    SciTech Connect (OSTI)

    Xu, X; Umansky, M; Dudson, B; Snyder, P

    2008-05-15T23:59:59.000Z

    The boundary plasma turbulence code BOUT models tokamak boundary-plasma turbulence in a realistic divertor geometry using modified Braginskii equations for plasma vorticity, density (ni), electron and ion temperature (T{sub e}; T{sub i}) and parallel momenta. The BOUT code solves for the plasma fluid equations in a three dimensional (3D) toroidal segment (or a toroidal wedge), including the region somewhat inside the separatrix and extending into the scrape-off layer; the private flux region is also included. In this paper, a description is given of the sophisticated physical models, innovative numerical algorithms, and modern software design used to simulate edge-plasmas in magnetic fusion energy devices. The BOUT code's unique capabilities and functionality are exemplified via simulations of the impact of plasma density on tokamak edge turbulence and blob dynamics.

  18. Magnetic field distribution in the plasma flow generated by a plasma focus discharge

    SciTech Connect (OSTI)

    Mitrofanov, K. N., E-mail: mitrofan@triniti.ru [Troitsk Institute for Innovaiton and Fusion Research (Russian Federation); Krauz, V. I., E-mail: krauz_vi@nrcki.ru; Myalton, V. V.; Velikhov, E. P.; Vinogradov, V. P.; Vinogradova, Yu. V. [National Research Centre Kurchatov Institute (Russian Federation)

    2014-11-15T23:59:59.000Z

    The magnetic field in the plasma jet propagating from the plasma pinch region along the axis of the chamber in a megajoule PF-3 plasma focus facility is studied. The dynamics of plasma with a trapped magnetic flow is analyzed. The spatial sizes of the plasma jet region in which the magnetic field concentrates are determined in the radial and axial directions. The magnetic field configuration in the plasma jet is investigated: the radial distribution of the azimuthal component of the magnetic field inside the jet is determined. It is shown that the magnetic induction vector at a given point in space can change its direction during the plasma flight. Conclusions regarding the symmetry of the plasma flow propagation relative to the chamber axis are drawn.

  19. Resonant-cavity antenna for plasma heating

    DOE Patents [OSTI]

    Perkins, Jr., Francis W. (Princeton, NJ); Chiu, Shiu-Chu (San Diego, CA); Parks, Paul (San Diego, CA); Rawls, John M. (Del Mar, CA)

    1987-01-01T23:59:59.000Z

    Disclosed is a resonant coil cavity wave launcher for energizing a plasma immersed in a magnetic field. Energization includes launching fast Alfven waves to excite ion cyclotron frequency resonances in the plasma. The cavity includes inductive and capacitive reactive members spaced no further than one-quarter wavelength from a first wall confinement chamber of the plasma. The cavity wave launcher is energized by connection to a waveguide or transmission line carrying forward power from a remote radio frequency energy source.

  20. Neutrino magnetic moment in a magnetized plasma

    E-Print Network [OSTI]

    N. V. Mikheev; E. N. Narynskaya

    2010-11-08T23:59:59.000Z

    The contribution of a magnetized plasma to the neutrino magnetic moment is calculated. It is shown that only part of the additional neutrino energy in magnetized plasma connecting with its spin and magnetic field strength defines the neutrino magnetic moment. It is found that the presence of magnetized plasma does not lead to the considerable increase of the neutrino magnetic moment in contrast to the results presented in literature previously.

  1. Nonabelian plasma instabilities in Bjorken expansion

    E-Print Network [OSTI]

    Anton Rebhan

    2008-10-17T23:59:59.000Z

    Plasma instabilities are parametrically the dominant nonequilibrium dynamics of a weakly coupled quark-gluon plasma. In recent years the time evolution of the corresponding collective colour fields has been studied in stationary anisotropic situations. Here I report on recent numerical results on the time evolution of the most unstable modes in a longitudinally expanding plasma as they grow from small rapidity fluctuations to amplitudes where non-Abelian self-interactions become important.

  2. Hydrophilization of Liquid Surfaces by Plasma Treatment

    E-Print Network [OSTI]

    Victor Multanen; Gilad Chaniel; Roman Grynyov; Ron Yosef Loew; Naor Siany; Edward Bormashenko

    2014-09-01T23:59:59.000Z

    The impact of the cold radiofrequency air plasma on the surface properties of silicone oils (polydimethylsiloxane) was studied. Silicone oils of various molecular masses were markedly hydrophilized by the cold air plasma treatment. A pronounced decrease of the apparent water contact angles was observed after plasma treatment. A general theoretical approach to the calculation of apparent contact angles is proposed. The treated liquid surfaces demonstrated hydrophobic recovery. The characteristic time of the hydrophobic recovery grew with the molecular mass of the silicone oil.

  3. Plasma enhancement of combustion of solid fuels

    SciTech Connect (OSTI)

    Askarova, A.S.; Karpenko, E.I.; Messerle, V.E.; Ustimenko, A.B. [Institute of Combustion Problems, Alma Ata (Kazakhstan)

    2006-03-15T23:59:59.000Z

    Plasma fuel systems that increase the coal burning efficiency are discussed. The systems were tested for fuel oil-free startup of boilers and stabilizating a pulverized-coal flame in power-generating boilers equipped with different types of burner and burning all types of power-generating coal. Plasma ignition, thermochemical treatment of an air-fuel mixture prior to combustion, and its burning in a power-generating boiler were numerically simulated. Environmental friendliness of the plasma technology was demonstrated.

  4. Quantum Electrodynamical Effects in Dusty Plasmas

    E-Print Network [OSTI]

    M. Marklund; L. Stenflo; P. K. Shukla; G. Brodin

    2005-05-31T23:59:59.000Z

    A new nonlinear electromagnetic wave mode in a magnetized dusty plasma is predicted. Its existence depends on the interaction of an intense circularly polarized electromagnetic wave with a dusty plasma, where quantum electrodynamical photon-photon scattering is taken into account. Specifically, we consider a dusty electron-positron-ion plasma, and show that the propagation of the new mode is admitted. It could be of significance for the physics of supernova remnants and in neutron star formation.

  5. Plasma sprayed ceria-containing interlayer

    DOE Patents [OSTI]

    Schmidt, Douglas S.; Folser, George R.

    2006-01-10T23:59:59.000Z

    A plasma sprayed ceria-containing interlayer is provided. The interlayer has particular application in connection with a solid oxide fuel cell used within a power generation system. The fuel cell advantageously comprises an air electrode, a plasma sprayed interlayer disposed on at least a portion of the air electrode, a plasma sprayed electrolyte disposed on at least a portion of the interlayer, and a fuel electrode applied on at least a portion of the electrolyte.

  6. Sensitivity of transient synchrotron radiation to tokamak plasma parameters

    SciTech Connect (OSTI)

    Fisch, N.J.; Kritz, A.H.

    1988-12-01T23:59:59.000Z

    Synchrotron radiation from a hot plasma can inform on certain plasma parameters. The dependence on plasma parameters is particularly sensitive for the transient radiation response to a brief, deliberate, perturbation of hot plasma electrons. We investigate how such a radiation response can be used to diagnose a variety of plasma parameters in a tokamak. 18 refs., 13 figs.

  7. James W. Van Dam US Burning Plasma Organization

    E-Print Network [OSTI]

    focus: magnetically confined plasmas #12;Page 5 USBPO What is a "burning" plasma? · "Burning" plasmaJames W. Van Dam US Burning Plasma Organization US ITER Project Office Institute for Fusion Studies Plasmas -- A Tutorial -- Supported by Office of Science #12;Page 2 USBPO The next frontier · Understanding

  8. Progress on a New RF Plasma Generator a

    E-Print Network [OSTI]

    source goal: produce high-recycling, strongly coupled PMI regime, guided by ITER divertor plasma Divertor Plasma Heat & Particle Fluxes ITER divertor channel What source plasma parameters are required? High-recycling plasmas led to new understanding · SOLPS (B2-Eirene) (Jülich; Garching; U. Paris) ­ Models for plasma

  9. Plasma Assisted Catalysis System for NOx Reduction

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

    2 NOXTECH NOXTECH PLASMA ASSISTED CATALYSIS SYSTEM FOR NOx REDUCTION BY NOXTECH With the Support & Cooperation of DOE Noxtech, Inc. *Delaware Corporation registered to do business...

  10. Plasma planar filament instability and Alfven waves

    E-Print Network [OSTI]

    Garcia de Andrade

    2007-03-05T23:59:59.000Z

    Inhomogeneous plasmas filaments instabilities are investigated by using the techniques of classical differential geometry of curves where Frenet torsion and curvature describe completely the motion of curves. In our case the Frenet frame changes in time and also depends upon the other coordinates taking into account the inhomogeneity of the plasma. The exponential perturbation method so commonly used to describe cosmological perturbatons is applied to magnetohydrodynamic (MHD) plasma equations to find longitudinal modes describing Alfven waves propagation modes describing plasma waves in the medium. Stability is investigated in the imaginary axis of the spectra of complex frequencies ${\\omega}$ or $Im(\\omega)\

  11. Electrostatic supersolitons in three-species plasmas

    SciTech Connect (OSTI)

    Verheest, Frank [Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B-9000 Gent (Belgium); School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Hellberg, Manfred A. [School of Chemistry and Physics, University of KwaZulu-Natal, Durban 4000 (South Africa); Kourakis, Ioannis [Department of Physics and Astronomy, Centre for Plasma Physics, Queen's University Belfast, BT7 1NN Northern Ireland (United Kingdom)

    2013-01-15T23:59:59.000Z

    Superficially, electrostatic potential profiles of supersolitons look like those of traditional solitons. However, their electric field profiles are markedly different, having additional extrema on the wings of the standard bipolar structure. This new concept was recently pointed out in the literature for a plasma model with five species. Here, it is shown that electrostatic supersolitons are not an artefact of exotic, complicated plasma models, but can exist even in three-species plasmas and are likely to occur in space plasmas. Further, a methodology is given to delineate their existence domains in a systematic fashion by determining the specific limiting factors.

  12. Metrics For Comparing Plasma Mass Filters

    SciTech Connect (OSTI)

    Abraham J. Fetterman and Nathaniel J. Fisch

    2012-08-15T23:59:59.000Z

    High-throughput mass separation of nuclear waste may be useful for optimal storage, disposal, or environmental remediation. The most dangerous part of nuclear waste is the fission product, which produces most of the heat and medium-term radiation. Plasmas are well-suited to separating nuclear waste because they can separate many different species in a single step. A number of plasma devices have been designed for such mass separation, but there has been no standardized comparison between these devices. We define a standard metric, the separative power per unit volume, and derive it for three different plasma mass filters: the plasma centrifuge, Ohkawa filter, and the magnetic centrifugal mass filter. __________________________________________________

  13. Metrics for comparing plasma mass filters

    SciTech Connect (OSTI)

    Fetterman, Abraham J.; Fisch, Nathaniel J. [Department of Astrophysical Sciences, Princeton University, Princeton, New Jersey 08540 (United States)

    2011-10-15T23:59:59.000Z

    High-throughput mass separation of nuclear waste may be useful for optimal storage, disposal, or environmental remediation. The most dangerous part of nuclear waste is the fission product, which produces most of the heat and medium-term radiation. Plasmas are well-suited to separating nuclear waste because they can separate many different species in a single step. A number of plasma devices have been designed for such mass separation, but there has been no standardized comparison between these devices. We define a standard metric, the separative power per unit volume, and derive it for three different plasma mass filters: the plasma centrifuge, Ohkawa filter, and the magnetic centrifugal mass filter.

  14. Plasma-assisted catalytic reduction system

    DOE Patents [OSTI]

    Vogtlin, G.E.; Merritt, B.T.; Hsiao, M.C.; Wallman, P.H.; Penetrante, B.M.

    1998-01-27T23:59:59.000Z

    Non-thermal plasma gas treatment is combined with selective catalytic reduction to enhance NO{sub x} reduction in oxygen-rich vehicle engine exhausts. 8 figs.

  15. Plasma heating in a variable magnetic field

    SciTech Connect (OSTI)

    Kichigin, G. N., E-mail: king@iszf.irk.ru [Russian Academy of Sciences, Institute of Solar-Terrestrial Physics (Russian Federation)

    2013-05-15T23:59:59.000Z

    The problem of particle acceleration in a periodically variable magnetic field that either takes a zero value or passes through zero is considered. It is shown that, each time the field [0]passes through zero, the particle energy increases abruptly. This process can be regarded as heating in the course of which plasma particles acquire significant energy within one field period. This mechanism of plasma heating takes place in the absence of collisions between plasma particles and is analogous to the mechanism of magnetic pumping in collisional plasma considered by Alfven.

  16. A Relativistic-Plasma Compton Maser

    E-Print Network [OSTI]

    James C. Weatherall

    2001-08-15T23:59:59.000Z

    A relativistic pair-plasma which contains a high excitation of electrostatic turbulence could produce intense radiation at brightness temperature in excess of 10^22 K by stimulated scattering. Important relativistic effects would include the broadband frequency response of the plasma and Compton-boosting of the scattered radiation. In radio-frequency relativistic plasma, the optical depth can be as small as hundreds of meters. When the plasma wave excitation and particle distributions are one-dimensional, the frequency-dependent angular distribution of the emission exhibits characteristics of pulsar emission.

  17. Laboratory plasma physics experiments using merging supersonic plasma jets

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

    Hsu, S. C.; Moser, A. L.; Merritt, E. C.; Adams, C. S.; Dunn, J. P.; Brockington, S.; Case, A.; Gilmore, M.; Lynn, A. G.; Messer, S. J.; et al

    2015-04-01T23:59:59.000Z

    We describe a laboratory plasma physics experiment at Los Alamos National Laboratory that uses two merging supersonic plasma jets formed and launched by pulsed-power-driven railguns. The jets can be formed using any atomic species or mixture available in a compressed-gas bottle and have the following nominal initial parameters at the railgun nozzle exit: ne ? ni ~ 10¹? cm?³, Te ? Ti ? 1.4 eV, Vjet ? 30–100 km/s, mean charge $\\bar{Z}$ ? 1, sonic Mach number Ms ? Vjet/Cs > 10, jet diameter = 5 cm, and jet length ? 20 cm. Experiments to date have focused on themore »study of merging-jet dynamics and the shocks that form as a result of the interaction, in both collisional and collisionless regimes with respect to the inter-jet classical ion mean free path, and with and without an applied magnetic field. However, many other studies are also possible, as discussed in this paper.« less

  18. Surface kinetics and plasma equipment model for Si etching by fluorocarbon plasmas

    E-Print Network [OSTI]

    Kushner, Mark

    Surface kinetics and plasma equipment model for Si etching by fluorocarbon plasmas Da Zhanga of fluorocarbon radicals on the reactor walls, polymer erosion rates and F atom diffusion through the polymer during Si etching using fluorocarbon gases in an induc- tively coupled plasma ICP reactor.4 They observed

  19. PUBLISHED VERSION Structure of micro-instabilities in tokamak plasmas: Stiff transport or plasma eruptions?

    E-Print Network [OSTI]

    eruptions? D. Dickinson, C. M. Roach, J. M. Skipp, and H. R. Wilson © 2013 UNITED KINGDOM ATOMIC ENERGY plasmas: Stiff transport or plasma eruptions? D. Dickinson, C. M. Roach, J. M. Skipp, and H. R. Wilson transport or plasma eruptions? D. Dickinson,1,2,a) C. M. Roach,2 J. M. Skipp,1 and H. R. Wilson1 1 York

  20. SJTU Plasma Physics Seminar, April 10.th 2009 1 Physics of Burning Plasmas in Toroidal Magnetic

    E-Print Network [OSTI]

    Zonca, Fulvio

    plasma without appreciable degradation due to collective modes. The identification of burning plasma materials. Such analyses can be performed, at least in part, in present day experiments and provide nice examples of mutual positive feedbacks between theory, simulation and experiment. In a burning plasma

  1. Nonlinear Plasma Waves Excitation by Intense Ion Beams in Background Plasma

    SciTech Connect (OSTI)

    Igor D. Kaganovich; Edward A. Startsev; Ronald C. Davidson

    2004-04-15T23:59:59.000Z

    Plasma neutralization of an intense ion pulse is of interest for many applications, including plasma lenses, heavy ion fusion, cosmic ray propagation, etc. An analytical electron fluid model has been developed to describe the plasma response to a propagating ion beam. The model predicts very good charge neutralization during quasi-steady-state propagation, provided the beam pulse duration {tau}{sub b} is much longer than the electron plasma period 2{pi}/{omega}{sub p}, where {omega}{sub p} = (4{pi}e{sup 2}n{sub p}/m){sup 1/2} is the electron plasma frequency and n{sub p} is the background plasma density. In the opposite limit, the beam pulse excites large-amplitude plasma waves. If the beam density is larger than the background plasma density, the plasma waves break. Theoretical predictions are compared with the results of calculations utilizing a particle-in-cell (PIC) code. The cold electron fluid results agree well with the PIC simulations for ion beam propagation through a background plasma. The reduced fluid description derived in this paper can provide an important benchmark for numerical codes and yield scaling relations for different beam and plasma parameters. The visualization of numerical simulation data shows complex collective phenomena during beam entry and exit from the plasma.

  2. Equilibration in Quark Gluon Plasma

    E-Print Network [OSTI]

    Santosh K Das; Jan-e Alam; Payal Mohanty

    2009-12-21T23:59:59.000Z

    The hydrodynamic expansion rate of quark gluon plasma (QGP) is evaluated and compared with the scattering rate of quarks and gluons within the system. Partonic scattering rates evaluated within the ambit of perturbative Quantum Choromodynamics (pQCD) are found to be smaller than the expansion rate evaluated with ideal equation of state (EoS) for the QGP. This indicate that during the space-time evolution the system remains out of equilibrium. Enhancement of pQCD cross sections and a more realistic EoS keep the partons closer to the equilibrium.

  3. Plasma arc melting of zirconium

    SciTech Connect (OSTI)

    Tubesing, P.K.; Korzekwa, D.R.; Dunn, P.S.

    1997-12-31T23:59:59.000Z

    Zirconium, like some other refractory metals, has an undesirable sensitivity to interstitials such as oxygen. Traditionally, zirconium is processed by electron beam melting to maintain minimum interstitial contamination. Electron beam melted zirconium, however, does not respond positively to mechanical processing due to its large grain size. The authors undertook a study to determine if plasma arc melting (PAM) technology could be utilized to maintain low interstitial concentrations and improve the response of zirconium to subsequent mechanical processing. The PAM process enabled them to control and maintain low interstitial levels of oxygen and carbon, produce a more favorable grain structure, and with supplementary off-gassing, improve the response to mechanical forming.

  4. Feedback enhanced plasma spray tool

    DOE Patents [OSTI]

    Gevelber, Michael Alan; Wroblewski, Donald Edward; Fincke, James Russell; Swank, William David; Haggard, Delon C.; Bewley, Randy Lee

    2005-11-22T23:59:59.000Z

    An improved automatic feedback control scheme enhances plasma spraying of powdered material through reduction of process variability and providing better ability to engineer coating structure. The present inventors discovered that controlling centroid position of the spatial distribution along with other output parameters, such as particle temperature, particle velocity, and molten mass flux rate, vastly increases control over the sprayed coating structure, including vertical and horizontal cracks, voids, and porosity. It also allows improved control over graded layers or compositionally varying layers of material, reduces variations, including variation in coating thickness, and allows increasing deposition rate. Various measurement and system control schemes are provided.

  5. Plasma vitrification of waste materials

    DOE Patents [OSTI]

    McLaughlin, David F. (Oakmont, PA); Dighe, Shyam V. (North Huntingdon, PA); Gass, William R. (Plum Boro, PA)

    1997-01-01T23:59:59.000Z

    This invention provides a process wherein hazardous or radioactive wastes in the form of liquids, slurries, or finely divided solids are mixed with finely divided glassformers (silica, alumina, soda, etc.) and injected directly into the plume of a non-transferred arc plasma torch. The extremely high temperatures and heat transfer rates makes it possible to convert the waste-glassformer mixture into a fully vitrified molten glass product in a matter of milliseconds. The molten product may then be collected in a crucible for casting into final wasteform geometry, quenching in water, or further holding time to improve homogeneity and eliminate bubbles.

  6. Princeton Plasma Physics Laboratory News

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnical News, information andNetarchive Princeton Plasma Physics

  7. Princeton Plasma Physics Laboratory News

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnical News, information andNetarchive Princeton Plasma Physics

  8. Plasma

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomassPPPOPetroleum ReservesThrustBonnevillePlans arePlants

  9. Plasma

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeedingBiomassPPPOPetroleum ReservesThrustBonnevillePlans

  10. Hawking radiation in moving plasmas

    E-Print Network [OSTI]

    L. C. Garcia de Andrade

    2005-09-07T23:59:59.000Z

    Bi-metricity and Hawking radiation are exhibit in non-relativistic moving magnetohydrodynamics (MHD) plasma medium generating two Riemannian effective spacetimes. The first metric is a flat metric although the speed of "light" is given by a time dependent signal where no Hawking radiation or effective black holes are displayed. This metric comes from a wave equation which the scalar function comes from the scalar potential of the background velocity of the fluid and depends on the perturbation of the magnetic background field. The second metric is an effective spacetime metric which comes from the perturbation of the background MHD fluid. This Riemann metric exhibits a horizon and Hawking radiation which can be expressed in terms of the background constant magnetic field. The effective velocity is given Alfven wave velocity of plasma physics. The effective black hole found here is analogous to the optical black hole in moving dielectrics found by De Lorenci et al [Phys. Rev. D (2003)] where bi-metricity and Hawking radiation in terms of the electric field are found.

  11. Sawtooth oscillations in shaped plasmas

    SciTech Connect (OSTI)

    Lazarus, E. A. [Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Luce, T. C.; Burrell, K. H.; Chu, M. S.; Ferron, J. R.; Hyatt, A. W.; Lao, L. L.; Lohr, J.; Osborne, T. H.; Petty, C. C.; Politzer, P. A.; Prater, R.; Scoville, J. T.; Strait, E. J.; Turnbull, A. D. [General Atomics, P.O. Box 85608, San Diego, California 92186-5608 (United States); Austin, M. E.; Waelbroeck, F. L. [University of Texas, Austin, Texas 78712 (United States); Brennan, D. P. [University of Tulsa, Tulsa, Oklahoma 74104 (United States); Jayakumar, R. J.; Makowski, M. A. [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)] (and others)

    2007-05-15T23:59:59.000Z

    The role of interchange and internal kink modes in the sawtooth oscillations is explored by comparing bean- and oval-shaped plasmas. The n=1 instability that results in the collapse of the sawtooth has been identified as a quasi-interchange in the oval cases and the internal kink in the bean shape. The ion and electron temperature profiles are followed in detail through the sawtooth ramp. It is found that electron energy transport rates are very high in the oval and quite low in the bean shape. Ion energy confinement in the oval is excellent and the sawtooth amplitude ({delta}T/T) in the ion temperature is much larger than that of the electrons. The sawtooth amplitudes for ions and electrons are comparable in the bean shape. The measured q profiles in the bean and oval shapes are found to be consistent with neoclassical current diffusion of the toroidal current, and the observed differences in q largely result from the severe differences in electron energy transport. For both shapes the collapse flattens the q profile and after the collapse return to q{sub 0} > or approx. 1. Recent results on intermediate shapes are reported. These shapes show that the electron energy transport improves gradually as the plasma triangularity is increased.

  12. Original article Differences between blood and plasma concentrations

    E-Print Network [OSTI]

    Boyer, Edmond

    porte / ruminant / sang / plasma 1. INTRODUCTION Many studies in ruminant nutrition focus- ies have already focused on differences between blood and plasma concentrations of various metabolitesOriginal article Differences between blood and plasma concentrations of acetate, &beta

  13. A Space-Charge-Neutralizing Plasma for Beam Drift Compression

    E-Print Network [OSTI]

    Roy, P.K.

    2008-01-01T23:59:59.000Z

    describes the final focus plasma channel. Sec. Ill describesin Sec. V . HIF08,PKROY 2. A final focus plasma channelThe final focus plasma channel consists of either a two-

  14. PLASMA Approximate Dynamic Programming finally cracks the locomotive optimization problem

    E-Print Network [OSTI]

    Powell, Warren B.

    PLASMA ­ Approximate Dynamic Programming finally cracks the locomotive optimization problem schedules and new operating policies. PLASMA is currently running at Norfolk Southern for strategic of PLASMA: Each locomotive is modeled individually, making it possible to capture both horsepower

  15. Plasma Citrulline Levels in Horses at Risk of Acute Laminitis

    E-Print Network [OSTI]

    Jackson, Amy Lynn

    2013-04-10T23:59:59.000Z

    plasma citrulline concentrations. Citrulline is an ?-amino acid circulated in the plasma that is produced mainly by intestinal epithelial cells. We hypothesized that horses in the developmental stage of laminitis would have reduced plasma citrulline...

  16. Experimental Characterization of Plasma Heating with Beating Electrostatic Waves

    E-Print Network [OSTI]

    Choueiri, Edgar

    Experimental Characterization of Plasma Heating with Beating Electrostatic Waves Benjamin Jorns and Edgar Y. Choueiri Electric Propulsion and Plasma Dynamics Laboratory, Princeton University, Princeton, NJ, 08540 The heating of ions in a magnetized plasma by two electrostatic waves whose frequencies

  17. Mechanical Behavior of Cryomilled Ni Superalloy by Spark Plasma Sintering

    E-Print Network [OSTI]

    2009-01-01T23:59:59.000Z

    Ni Superalloy by Spark Plasma Sintering Z. ZHANG, B.Q. HAN,cryomilling and spark plasma sintering (SPS) was studied.prepared by the spark plasma sintering (SPS) technique. To

  18. Ion emission and expansion in laser-produced tin plasma

    E-Print Network [OSTI]

    Burdt, Russell Allen

    2011-01-01T23:59:59.000Z

    scale length laser-produced tin plasmas, PhD dissertation,and Expansion in Laser-Produced Tin Plasma A dissertationof a CO 2 laser pulse with tin-based plasma for an extreme

  19. arc plasma method: Topics by E-print Network

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

    for two types of plasma sources used cathodic-arc plasma source show the coupling efficiency of the plasma flow from the source to the drift Gilson, Erik 8 Computational study...

  20. Control of laser plasma instabilities in hohlraums

    SciTech Connect (OSTI)

    Kruer, W.L.

    1996-12-01T23:59:59.000Z

    Laser plasma instabilities are an important constraint on the operating regime for inertial fusion. Many techniques have been developed to control the various laser-driven instabilities. Experiments with long scale length plasmas are testing these instability levels, the nonlinear regimes, and the control mechanisms.

  1. Diagnostics for Burning Plasma Physics Studies

    E-Print Network [OSTI]

    quality of data as in best present-day devices. · High quality, reliable information on many plasma parameters will have to provide control signals. · New information about the alpha-particles. · The neutron RESOLUTION ACCURACY Plasma current 0.1 ­ 17.5 MA Not applicable 1 ms 1% (Ip>1 MA) Total neutron flux 1x1014

  2. ISRAELI PLASMA SCIENCE AND TECHNOLOGY ASSOCIATION

    E-Print Network [OSTI]

    AND APPLICATIONS H.I.T. ­ Holon Institute of Technology February 4th, 2013 BOOK OF ABSTRACTS http://plasma-gate.weizmann.ac.il/ipsta2013/ #12;15th Israeli Conference on Plasma Science and Applications, HIT, Holon, February 4th , 2013 2 Science and Applications, HIT, Holon, February 4th , 2013 3 PREFACE We are delighted to host the 15th

  3. Magnetic multipole redirector of moving plasmas

    DOE Patents [OSTI]

    Crow, James T. (Albuquerque, NM); Mowrer, Gary R. (Cedar Crest, NM)

    1999-01-01T23:59:59.000Z

    A method and apparatus for redirecting moving plasma streams using a multiple array of magnetic field generators (e.g., permanent magnets or current bearing wires). Alternate rows of the array have opposite magnetic field directions. A fine wire mesh may be employed to focus as well as redirect the plasma.

  4. Gravimagnetic shock waves in the anisotropic plasma

    E-Print Network [OSTI]

    Yu. G. Ignatyev; D. N. Gorokhov

    2011-01-01T23:59:59.000Z

    The relativistic magnetohydrodynamic equations for the anisotropic magnetoactive plasma are obtained and accurately integrated in the plane gravitational wave metrics. The dependence of the induction mechanism of the gravimagnetic shock waves on the degree of the magnetoactive plasma anisotropy is analyzed.

  5. Quarkonia in a deconfined gluonic plasma

    E-Print Network [OSTI]

    S. Datta; A. Jakovac; F. Karsch; P. Petreczky

    2006-03-01T23:59:59.000Z

    We discuss lattice results on the properties of finite momentum charmonium states in a gluonic plasma. We also present preliminary results for bottomonium correlators and spectral functions in the plasma. Significant modifications of chi_b states are seen at temperatures of 1.5 Tc.

  6. Plasma discharge self-cleaning filtration system

    DOE Patents [OSTI]

    Cho, Young I.; Fridman, Alexander; Gutsol, Alexander F.; Yang, Yong

    2014-07-22T23:59:59.000Z

    The present invention is directed to a novel method for cleaning a filter surface using a plasma discharge self-cleaning filtration system. The method involves utilizing plasma discharges to induce short electric pulses of nanoseconds duration at high voltages. These electrical pulses generate strong Shockwaves that disintegrate and dislodge particulate matter located on the surface of the filter.

  7. Princeton Plasma Physics Laboratory NSTX Experimental Proposal

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    is to apply small oscillations in the plasma vertical position, in order to trigger ELMs. The vertical oscillations will be generated in one of two ways i) by requesting rapid variations in the plasma vertical position, or ii) explicitly adding a "kick" voltage to the PF-3 coil, and then allowing the vertical

  8. Atomic processes in high-density plasmas

    SciTech Connect (OSTI)

    More, R.M.

    1982-12-21T23:59:59.000Z

    This review covers dense atomic plasmas such as that produced in inertial confinement fusion. The target implosion physics along with the associated atomic physics, i.e., free electron collision phenomena, electron states I, electron states II, and nonequilibrium plasma states are described. (MOW)

  9. Air plasma effect on dental disinfection

    SciTech Connect (OSTI)

    Duarte, S.; Murata, R. M.; Saxena, D. [Department of Basic Sciences and Craniofacial Biology, College of Dentistry, New York University, New York, New York 10010 (United States); Kuo, S. P.; Chen, C. Y.; Huang, K. J. [Department of Electrical and Computer Engineering, Polytechnic Institute of New York University, Brooklyn, New York 11202 (United States); Popovic, S. [Department of Physics, Old Dominion University, Norfolk, Virginia 23529 (United States)

    2011-07-15T23:59:59.000Z

    A nonthermal low temperature air plasma jet is characterized and applied to study the plasma effects on oral pathogens and biofilms. Experiments were performed on samples of six defined microorganisms' cultures, including those of gram-positive bacteria and fungi, and on a cultivating biofilm sample of Streptococcus mutans UA159. The results show that the plasma jet creates a zone of microbial growth inhibition in each treated sample; the zone increases with the plasma treatment time and expands beyond the entire region directly exposed to the plasma jet. With 30s plasma treatment twice daily during 5 days of biofilm cultivation, its formation was inhibited. The viability of S. mutans cells in the treated biofilms dropped to below the measurable level and the killed bacterial cells concentrated to local regions as manifested by the fluorescence microscopy via the environmental scanning electron microscope. The emission spectroscopy of the jet indicates that its plasma effluent carries an abundance of reactive atomic oxygen, providing catalyst for the observed plasma effect.

  10. Taylor-Couette flow of unmagnetized plasma

    SciTech Connect (OSTI)

    Collins, C.; Cooper, C. M.; Flanagan, K.; Khalzov, I. V.; Nornberg, M. D.; Forest, C. B. [Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States) [Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States); Center for Magnetic Self Organization, University of Wisconsin, Madison, Wisconsin 53706 (United States); Clark, M.; Seidlitz, B.; Wallace, J. [Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)] [Department of Physics, University of Wisconsin, Madison, Wisconsin 53706 (United States)

    2014-04-15T23:59:59.000Z

    Differentially rotating flows of unmagnetized, highly conducting plasmas have been created in the Plasma Couette Experiment. Previously, hot-cathodes have been used to control plasma rotation by a stirring technique [C. Collins et al., Phys. Rev. Lett. 108, 115001 (2012)] on the outer cylindrical boundary—these plasmas were nearly rigid rotors, modified only by the presence of a neutral particle drag. Experiments have now been extended to include stirring from an inner boundary, allowing for generalized circular Couette flow and opening a path for both hydrodynamic and magnetohydrodynamic experiments, as well as fundamental studies of plasma viscosity. Plasma is confined in a cylindrical, axisymmetric, multicusp magnetic field, with T{sub e}?plasmas, and the experiment has already achieved Rm???65 and Pm?0.2?12. We present measurements of a self-consistent, rotation-induced, species-dependent radial electric field, which acts together with pressure gradient to provide the centripetal acceleration for the ions. The maximum flow speeds scale with the Alfvén critical ionization velocity, which occurs in partially ionized plasma. A hydrodynamic stability analysis in the context of the experimental geometry and achievable parameters is also explored.

  11. Combined plasma/liquid cleaning of substrates

    DOE Patents [OSTI]

    Selwyn, Gary S. (Los Alamos, NM); Henins, Ivars (Los Alamos, NM)

    2003-04-15T23:59:59.000Z

    Apparatus and method for cleaning substrates. A substrate is held and rotated by a chuck and an atmospheric pressure plasma jet places a plasma onto predetermined areas of the substrate. Subsequently liquid rinse is sprayed onto the predetermined areas. In one embodiment, a nozzle sprays a gas onto the predetermined areas to assist in drying the predetermined areas when needed.

  12. Characterization of BCl3/N-2 plasmas

    E-Print Network [OSTI]

    Sia, S. F.

    2003-08-15T23:59:59.000Z

    measured with a DekTak surface a! Electronic mail: nordhed@ku.edu Characterization of BCl 3 N 2 plasmas Karen J. Nordheden a) and Joanne F. Sia Plasma Research Laboratory, Department of Chemical and Lawrence, Kansas 66045 ~Received 25 April 2003; accepted...

  13. Robotics Science & Technology for Burning Plasma Experiments

    E-Print Network [OSTI]

    Robotics Science & Technology for Burning Plasma Experiments J. N. Herndon, T. W. Burgess, M. M, General Atomics, San Diego, California. #12;Robotics Challenges in Burning Plasma Experiments · Control x x x x x x earthmoving equipment electric robots Conventional Machines DMHP Machines x x x x

  14. Chapter eae124 Magnetic Plasma Sails

    E-Print Network [OSTI]

    Winglee, Robert M.

    EAE124 Chapter eae124 Magnetic Plasma Sails Robert M. Winglee Department of Earth and Space c 2010 John Wiley & Sons, Ltd. ISBN: 978-0-470-75440-5 Plasma propulsion systems offer a tenfold for propulsion. It suffices to say that solar photons produce 9 N m-2 of pressure. The mechanics of solar sail

  15. Electron and photon beams interacting with plasma

    E-Print Network [OSTI]

    Strathclyde, University of

    -amplitude plasma waves are dense, ultra-short relativistic electron bunches (Chen et al. 1985) or intense laser A comparison is made between the interaction of electron bunches and intense laser pulses with plasma. The laser pulse is modelled with photon kinetic theory, i.e. a representation of the electromagnetic field

  16. Measurements of an expanding surface flashover plasma

    SciTech Connect (OSTI)

    Harris, J. R., E-mail: john.harris@colostate.edu [Department of Electrical and Computer Engineering, Colorado State University, Fort Collins, Colorado 80523 (United States)

    2014-05-21T23:59:59.000Z

    A better understanding of vacuum surface flashover and the plasma produced by it is of importance for electron and ion sources, as well as advanced accelerators and other vacuum electronic devices. This article describes time-of-flight and biased-probe measurements made on the expanding plasma generated from a vacuum surface flashover discharge. The plasma expanded at velocities of 1.2–6.5?cm/?s, and had typical densities of 10{sup 10}–10{sup 12}?cm{sup ?3}. The expansion velocity of the plasma leading edge often exhibited a sharp increase at distances of about 50?mm from the discharge site. Comparison with biased-probe data suggests that, under most conditions, the plasma leading edge was dominated by negative ions, with the apparent increase in velocity being due to fast H{sup ?} overtaking slower, heavier ions. In some cases, biased-probe data also showed abrupt discontinuities in the plasma energy distribution co-located with large changes in the intercepted plasma current, suggesting the presence of a shock in the leading edge of the expanding plasma.

  17. PLASMA DYNAMICS AND PLASMA WALL INTERACTION 130 Problems of Atomic Science and Technology. 2006, 6. Series: Plasma Physics (12), p. 130-134

    E-Print Network [OSTI]

    Harilal, S. S.

    PLASMA DYNAMICS AND PLASMA WALL INTERACTION 130 Problems of Atomic Science and Technology. 2006, 6. Series: Plasma Physics (12), p. 130-134 SIMULATION OF HIGH POWER DEPOSITION ON TARGET MATERIALS: APPLICATIONS IN MAGNETIC, INERTIAL FUSION, AND HIGH POWER PLASMA LITHOGRAPHY DEVICES Ahmed Hassanein Argonne

  18. Fuel gas production by microwave plasma in liquid

    SciTech Connect (OSTI)

    Nomura, Shinfuku; Toyota, Hiromichi; Tawara, Michinaga; Yamashita, Hiroshi; Matsumoto, Kenya [Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577 (Japan); Shikoku Industry and Technology Promotion Center, 2-5 Marunouchi, Takamatsu, Kagawa 760-0033 (Japan)

    2006-06-05T23:59:59.000Z

    We propose to apply plasma in liquid to replace gas-phase plasma because we expect much higher reaction rates for the chemical deposition of plasma in liquid than for chemical vapor deposition. A reactor for producing microwave plasma in a liquid could produce plasma in hydrocarbon liquids and waste oils. Generated gases consist of up to 81% hydrogen by volume. We confirmed that fuel gases such as methane and ethylene can be produced by microwave plasma in liquid.

  19. Plasma flow measurements in a simulated low earth orbit plasma

    SciTech Connect (OSTI)

    Gabriel, S.B. (California Institute of Technology, Jet Propulsion Laboratory, Electrical Power and Propulsion Section, Pasadena, CA); Mccoy, J.E. (NASA, Johnson Space Center, Houston, TX); Carruth, M.R. Jr. (NASA, Marshall Space Flight Center, Huntsville, AL)

    1982-01-01T23:59:59.000Z

    The employment of large, higher power solar arrays for space operation has been considered, taking into account a utilization of high operating voltages. In connection with the consideration of such arrays, attention must be given to the fact that the ambient environment of space contains a tenuous low energy plasma which can interact with the high voltage array causing power 'leakage' and arcing. An investigation has been conducted with the aim to simulate the behavior of such an array in low-earth-orbit (LEO). During the experiments, local concentrations of the 'leakage' current were observed when the panel was at a high voltage. These concentrations could overload or damage a small area of cells in a large string. It was hypothesized that this effect was produced by electrostatic focusing of the particles by the sheath fields. To verify this experimentally, an end-effect Langmuir probe was employed. The obtained results are discussed.

  20. Plasma response to electron energy filter in large volume plasma device

    SciTech Connect (OSTI)

    Sanyasi, A. K.; Awasthi, L. M.; Mattoo, S. K.; Srivastava, P. K.; Singh, S. K.; Singh, R.; Kaw, P. K. [Institute for Plasma Research, Gandhinagar, 382 428 Gujarat (India)] [Institute for Plasma Research, Gandhinagar, 382 428 Gujarat (India)

    2013-12-15T23:59:59.000Z

    An electron energy filter (EEF) is embedded in the Large Volume Plasma Device plasma for carrying out studies on excitation of plasma turbulence by a gradient in electron temperature (ETG) described in the paper of Mattoo et al. [S. K. Mattoo et al., Phys. Rev. Lett. 108, 255007 (2012)]. In this paper, we report results on the response of the plasma to the EEF. It is shown that inhomogeneity in the magnetic field of the EEF switches on several physical phenomena resulting in plasma regions with different characteristics, including a plasma region free from energetic electrons, suitable for the study of ETG turbulence. Specifically, we report that localized structures of plasma density, potential, electron temperature, and plasma turbulence are excited in the EEF plasma. It is shown that structures of electron temperature and potential are created due to energy dependence of the electron transport in the filter region. On the other hand, although structure of plasma density has origin in the particle transport but two distinct steps of the density structure emerge from dominance of collisionality in the source-EEF region and of the Bohm diffusion in the EEF-target region. It is argued and experimental evidence is provided for existence of drift like flute Rayleigh-Taylor in the EEF plasma.

  1. Effect of argon addition on plasma parameters and dust charging in hydrogen plasma

    SciTech Connect (OSTI)

    Kakati, B., E-mail: bharatkakati15@gmail.com; Kausik, S. S.; Saikia, B. K. [Centre of Plasma Physics-Institute for Plasma Research, Nazirakhat, Sonapur, Kamrup 782402, Assam (India); Bandyopadhyay, M.; Saxena, Y. C. [Institute for Plasma Research, Bhat, Gandhinagar 382 428 (India)

    2014-10-28T23:59:59.000Z

    Experimental results on effect of adding argon gas to hydrogen plasma in a multi-cusp dusty plasma device are reported. Addition of argon modifies plasma density, electron temperature, degree of hydrogen dissociation, dust current as well as dust charge. From the dust charging profile, it is observed that the dust current and dust charge decrease significantly up to 40% addition of argon flow rate in hydrogen plasma. But beyond 40% of argon flow rate, the changes in dust current and dust charge are insignificant. Results show that the addition of argon to hydrogen plasma in a dusty plasma device can be used as a tool to control the dust charging in a low pressure dusty plasma.

  2. Plasma Chemistry and Plasma Processing, Vol. 22, No. 4, December 2002 ( 2002) Ozone Production in the Positive DC Corona

    E-Print Network [OSTI]

    Chen, Junhong

    Plasma Chemistry and Plasma Processing, Vol. 22, No. 4, December 2002 ( 2002) Ozone Production the distribution of ozone, but does not affect the rate of production. KEY WORDS: Corona discharge; corona plasma

  3. Interaction of the magnetic field with plasmas is an in-triguing subject of modern plasma physics. Detailed and

    E-Print Network [OSTI]

    #12;Abstract Interaction of the magnetic field with plasmas is an in- triguing subject of modern plasma physics. Detailed and reliable measurements of the key plasma parameters, as well

  4. Tokamak plasma current disruption infrared control system

    DOE Patents [OSTI]

    Kugel, Henry W. (Somerset, NJ); Ulrickson, Michael (E. Windsor, NJ)

    1987-01-01T23:59:59.000Z

    In a magnetic plasma confinment device having an inner toroidal limiter mounted on an inner wall of a plasma containment vessel, an arrangement is provided for monitoring vertical temperature profiles of the limiter. The temperature profiles are taken at brief time intervals, in a time scan fashion. The time scans of the vertical temperature profile are continuously monitored to detect the presence of a peaked temperature excursion, which, according to the present invention, is a precursor of a subsequent major plasma disruption. A fast scan of the temperature profile is made so as to provide a time interval in real time prior to the major plasma disruption, such that corrective action can be taken to reduce the harmful effects of the plasma disruption.

  5. NSTX Plasma Response to Lithium Coated Divertor

    SciTech Connect (OSTI)

    H.W. Kugel, M.G. Bell, J.P. Allain, R.E. Bell, S. Ding, S.P. Gerhardt, M.A. Jaworski, R. Kaita, J. Kallman, S.M. Kaye, B.P. LeBlanc, R. Maingi, R. Majeski, R. Maqueda, D.K. Mansfield, D. Mueller, R. Nygren, S.F. Paul, R. Raman, A.L. Roquemore, S.A. Sabbagh, H. Schneider, C.H. Skinner, V.A. Soukhanovskii, C.N. Taylor, J.R. Timberlak, W.R. Wampler, L.E. Zakharov, S.J. Zweben, and the NSTX Research Team

    2011-01-21T23:59:59.000Z

    NSTX experiments have explored lithium evaporated on a graphite divertor and other plasma facing components in both L- and H- mode confinement regimes heated by high-power neutral beams. Improvements in plasma performance have followed these lithium depositions, including a reduction and eventual elimination of the HeGDC time between discharges, reduced edge neutral density, reduced plasma density, particularly in the edge and the SOL, increased pedestal electron and ion temperature, improved energy confinement and the suppression of ELMs in the H-mode. However, with improvements in confinement and suppression of ELMs, there was a significant secular increase in the effective ion charge Zeff and the radiated power in H-mode plasmas as a result of increases in the carbon and medium-Z metallic impurities. Lithium itself remained at a very low level in the plasma core, <0.1%. Initial results are reported from operation with a Liquid Lithium Divertor (LLD) recently installed.

  6. Plasma Mass Filters For Nuclear Waste Reprocessing

    SciTech Connect (OSTI)

    Abraham J. Fetterman and Nathaniel J. Fisch

    2011-05-26T23:59:59.000Z

    Practical disposal of nuclear waste requires high-throughput separation techniques. The most dangerous part of nuclear waste is the fission product, which contains the most active and mobile radioisotopes and produces most of the heat. We suggest that the fission products could be separated as a group from nuclear waste using plasma mass filters. Plasmabased processes are well suited to separating nuclear waste, because mass rather than chemical properties are used for separation. A single plasma stage can replace several stages of chemical separation, producing separate streams of bulk elements, fission products, and actinoids. The plasma mass filters may have lower cost and produce less auxiliary waste than chemical processing plants. Three rotating plasma configurations are considered that act as mass filters: the plasma centrifuge, the Ohkawa filter, and the asymmetric centrifugal trap.

  7. Plasma Mass Filters For Nuclear Waste Reprocessing

    SciTech Connect (OSTI)

    Abraham J. Fetterman and Nathaniel J. Fisch

    2011-05-25T23:59:59.000Z

    Practical disposal of nuclear waste requires high-throughput separation techniques. The most dangerous part of nuclear waste is the fission product, which contains the most active and mobile radioisotopes and produces most of the heat. We suggest that the fission products could be separated as a group from nuclear waste using plasma mass filters. Plasmabased processes are well suited to separating nuclear waste, because mass rather than chemical properties are used for separation. A single plasma stage can replace several stages of chemical separation, producing separate streams of bulk elements, fission products, and actinoids. The plasma mass filters may have lower cost and produce less auxiliary waste than chemical processing plants. Three rotating plasma configurations are considered that act as mass filters: the plasma centrifuge, the Ohkawa filter, and the asymmetric centrifugal trap.

  8. Ionization Equilibrium Timescales in Collisional Plasmas

    E-Print Network [OSTI]

    Smith, Randall K

    2010-01-01T23:59:59.000Z

    Astrophysical shocks or bursts from a photoionizing source can disturb the typical collisional plasma found in galactic interstellar media or the intergalactic medium. The spectrum emitted by this plasma contains diagnostics that have been used to determine the time since the disturbing event, although this determination becomes uncertain as the elements in the plasma return to ionization equilibrium. A general solution for the equilibrium timescale for each element arises from the elegant eigenvector method of solution to the problem of a non-equilibrium plasma described by Masai (1984) and Hughes & Helfand (1985). In general the ionization evolution of an element Z in a constant electron temperature plasma is given by a coupled set of Z+1 first order differential equations. However, they can be recast as Z uncoupled first order differential equations using an eigenvector basis for the system. The solution is then Z separate exponential functions, with the time constants given by the eigenvalues of the r...

  9. Surface-Plasma Interaction on the Moon

    SciTech Connect (OSTI)

    Horanyi, M.; Wang, X.; Robertson, S.; Sternovsky, Z. [University of Colorado, Boulder, CO 80309-0392 (United States)

    2008-09-07T23:59:59.000Z

    The electrostatic levitation and transport of lunar dust remains a controversial science issue since the Apollo era. As a function of time and location, the lunar surface is exposed to solar wind plasma, UV radiation, and/or the plasma environment of our magnetosphere. Dust grains on the lunar surface emit and absorb plasma particles and are exposed to solar UV photons. There are several in situ and remote sensing observations that indicate that dusty plasma processes are responsible for the mobilization and transport of lunar soil. We briefly discuss the existing observations, and report on a series of experiments that address some of the most relevant processes acting on dusty surfaces exposed to plasmas and UV radiation.

  10. Plasma-based EUV light source

    DOE Patents [OSTI]

    Shumlak, Uri (Seattle, WA); Golingo, Raymond (Seattle, WA); Nelson, Brian A. (Mountlake Terrace, WA)

    2010-11-02T23:59:59.000Z

    Various mechanisms are provided relating to plasma-based light source that may be used for lithography as well as other applications. For example, a device is disclosed for producing extreme ultraviolet (EUV) light based on a sheared plasma flow. The device can produce a plasma pinch that can last several orders of magnitude longer than what is typically sustained in a Z-pinch, thus enabling the device to provide more power output than what has been hitherto predicted in theory or attained in practice. Such power output may be used in a lithography system for manufacturing integrated circuits, enabling the use of EUV wavelengths on the order of about 13.5 nm. Lastly, the process of manufacturing such a plasma pinch is discussed, where the process includes providing a sheared flow of plasma in order to stabilize it for long periods of time.

  11. Performance Evaluation of the Delphi Non-Thermal Plasma System...

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

    Distribution from a Non-Thermal Plasma Reactor Heavy-Duty NOx Emissions Control: Reformer-Assisted vs. Plasma-Facilitated Lean NOx Catalysis Development of Optimal Catalyst...

  12. atmospheric plasma enhanced: Topics by E-print Network

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

    of a large area plasma Rubloff, Gary W. 105 Generation and bistability of a waveguide nano-plasma observed by enhanced extreme ultraviolet fluorescence CERN Preprints Summary:...

  13. altering plasma glucose: Topics by E-print Network

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

    of non -regulation of plasma glucose levels Prestwich, Ken 2 EFFECT OF INTRAVENOUS INFUSION OF GLUCOSE ANDOR FRUCTOSE ON THE COMPOSITION OF BLOOD PLASMA Physics Websites...

  14. Long Plasma Source for Heavy Ion Beam Charge Neutralization

    E-Print Network [OSTI]

    Efthimion, P.C.

    2009-01-01T23:59:59.000Z

    neutralizing plasma column the heavy ion beam can focus to aPlasmas are a source of unbound electrons for charge neutralizing intense heavy ion beams to focus

  15. Summary Report of Working Group 6: Laser-Plasma Acceleration

    E-Print Network [OSTI]

    Leemans, Wim P.; Downer, Michael; Siders, Craig

    2008-01-01T23:59:59.000Z

    be an important focus of laser-plasma acceleration researchfocus. In both cases, light regions of the image ionized and heated the plasma,

  16. Laboratories to Explore the Frontiers of Plasma Science VLBACHANDRA

    E-Print Network [OSTI]

    . · NRC Interim Report identified "integrated physics of a self-heated plasma" as one of the critical plasma and self-heating issues

  17. SciTech Connect: Research in computational plasma physics. Progress...

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

    Research in computational plasma physics. Progress report, June 1, 1972-- May 31, 1973. Citation Details In-Document Search Title: Research in computational plasma physics....

  18. Study of internal magnetic field via polarimetry in fusion plasmas

    E-Print Network [OSTI]

    Zhang, Jie

    2013-01-01T23:59:59.000Z

    to thank the whole plasma research group at STRB and Rehab,interest to the tokamak plasma research, since it directly

  19. ambient plasma technique: Topics by E-print Network

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

    for motional Stark effect Plasma Physics and Fusion Websites Summary: John Howard Plasma Research Laboratory, Australian National University, Canberra ACT 0200, Australia the...

  20. astrophysical plasmas mhd: Topics by E-print Network

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

    Summary: The Madison plasma dynamo experiment (MPDX) is a novel, versatile, basic plasma research device designed to investigate flow driven magnetohydrodynamic (MHD)...

  1. astrophysical applications plasma: Topics by E-print Network

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

    Summary: The Madison plasma dynamo experiment (MPDX) is a novel, versatile, basic plasma research device designed to investigate flow driven magnetohydrodynamic (MHD)...

  2. arc plasma study: Topics by E-print Network

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

    Summary: The Madison plasma dynamo experiment (MPDX) is a novel, versatile, basic plasma research device designed to investigate flow driven magnetohydrodynamic (MHD)...

  3. Nonlinear laser energy depletion in laser-plasma accelerators

    E-Print Network [OSTI]

    Shadwick, B.A.

    2009-01-01T23:59:59.000Z

    Nonlinear laser energydepletion in laser-plasma accelerators ? B. A. Shadwick,of intense, short-pulse lasers via excitation of plasma

  4. arc plasma source: Topics by E-print Network

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

    critical ionization velocity. However, due to their pulsed nature, throughput such an electrodeless plasma centrifuge. First we will summarize advantages of the plasma...

  5. argon plasma atomic: Topics by E-print Network

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

    observed in a complex plasma are presented. The experiments are performed with an argon plasma which is produced under microgravity conditions using a capacitively-coupled rf...

  6. arc plasma science: Topics by E-print Network

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

    critical ionization velocity. However, due to their pulsed nature, throughput such an electrodeless plasma centrifuge. First we will summarize advantages of the plasma...

  7. argon microwave plasma: Topics by E-print Network

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

    both hydrodynamic and magnetohydrodynamic experiments, as well as fundamental studies of plasma viscosity. Plasma is confined in a cylindrical, axisymmetric, multicusp magnetic...

  8. Using Radio Waves to Control Fusion Plasma Density

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

    Using Radio Waves to Control Fusion Plasma Density Using Radio Waves to Control Fusion Plasma Density Simulations Run at NERSC Support Fusion Experiments at MIT, General Atomics...

  9. High Energy Density Laboratory Plasmas Program | National Nuclear...

    National Nuclear Security Administration (NNSA)

    Photo Gallery Jobs Apply for Our Jobs Our Jobs Working at NNSA Blog Home High Energy Density Laboratory Plasmas Program High Energy Density Laboratory Plasmas Program...

  10. atmospheric thermal plasmas: Topics by E-print Network

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

    by plasma instabilities in the thermalization of quark-gluon plasmas at very high energy. Conference talk presented at Strong and Electroweak Mattter 2004, Helsinki, Finland,...

  11. Effects of viscogenic plasma expander on cardiac and vascular function

    E-Print Network [OSTI]

    Chatpun, Surapong

    2010-01-01T23:59:59.000Z

    Plasma expanders (PEs) are infused fluids which restitutehow viscosity of infused fluid affects cardiac function wasPlasma expanders (PEs) are infused fluids which restitute

  12. Dynamometer Evaluation of Plasma-Catalyst for Diesel NOx Reduction...

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

    of Plasma-Catalyst for Diesel NOx Reduction 2003 DEER Conference Presentation: Ford Motor Company 2003deerhoard.pdf More Documents & Publications Plasma Assisted Catalysis...

  13. The U.S. Burning Plasma Program C.M. Greenfield

    E-Print Network [OSTI]

    for burning plasma research ­ US Burning Plasma Organization (created 2005): currently 283 registered members

  14. Interactions of Plasma-Generated Species on Porous Dielectric Thin Films

    E-Print Network [OSTI]

    Lee, Joe

    2013-01-01T23:59:59.000Z

    Plasma chemistries using fluorocarbon containing gases haveetching often uses fluorocarbon-containing plasmas. 77,78

  15. Inductively coupled plasma chemistry examinations with visible acousto-optic tunable filter hyperspectral imaging{

    E-Print Network [OSTI]

    Duffin, Kirk

    to be a powerful tool for plasma chemistry research. Introduction Inductively coupled plasma optical emission

  16. GLAST SCIENCE GLOSSARY Source: http://glast.sonoma.edu/science/gru/glossary.html

    E-Print Network [OSTI]

    the nucleus. BATSE -- The Burst and Transient Source Experiment on board the Compton Gamma-ray Observatory. BATSE made all-sky observations of gamma-ray bursts and flares, as well as observing many other objects, the annihilation of an electron and positron results in the emission of two gamma-ray photons, each with an energy

  17. MPS213 - A Non-Thermal Plasma Application for the Royal Navy...

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

    21 ME2132 - DDO NTP - The Way Ahead NTP Treatment of Particulates Inlet Outlet no plasma Outlet plasma 0 1 2 3 4 5 6 7 Before After (no plasma) After (plasma) After (plasma) After...

  18. Plasma generation for controlled microwave-reflecting surfaces in plasma antennas

    SciTech Connect (OSTI)

    Bliokh, Yury P.; Felsteiner, Joshua; Slutsker, Yakov Z. [Physics Department, Technion-Israel Institute of Technology, 32000 Haifa (Israel)

    2014-04-28T23:59:59.000Z

    The idea of replacing metal antenna elements with equivalent plasma objects has long been of interest because of the possibility of switching the antenna on and off. In general, two kinds of designs have so far been reported: (a) Separate plasma “wires” which are thin glass tubes filled with gas, where plasma appears due to discharge inside. (b) Reflecting surfaces, consisting of tightly held plasma wires or specially designed large discharge devices with magnetic confinement. The main disadvantages of these antennas are either large weight and size or too irregular surfaces for proper reflection. To design a microwave plasma antenna in the most common radar wavelength range of 1–3?cm with a typical gain of 30?dB, a smooth plasma mirror having a 10–30?cm diameter and a proper curvature is required. The plasma density must be 10{sup 12}–10{sup 14}?cm{sup ?3} in order to exceed the critical density for the frequency of the electromagnetic wave. To achieve this we have used a ferromagnetic inductively coupled plasma (FICP) source, where a thin magnetic core of a large diameter is fully immersed in the plasma. In the present paper, we show a way to adapt the FICP source for creating a flat switchable microwave plasma mirror with an effective diameter of 30?cm. This mirror was tested as a microwave reflector and there was found no significant difference when compared with a copper plate having the same diameter.

  19. A plasma process monitor/control system

    SciTech Connect (OSTI)

    Stevenson, J.O.; Ward, P.P.; Smith, M.L. [Sandia National Labs., Albuquerque, NM (United States); Markle, R.J. [Advanced Micro Devices, Inc., Austin, TX (United States)

    1997-08-01T23:59:59.000Z

    Sandia National Laboratories has developed a system to monitor plasma processes for control of industrial applications. The system is designed to act as a fully automated, sand-alone process monitor during printed wiring board and semiconductor production runs. The monitor routinely performs data collection, analysis, process identification, and error detection/correction without the need for human intervention. The monitor can also be used in research mode to allow process engineers to gather additional information about plasma processes. The plasma monitor can perform real-time control of support systems known to influence plasma behavior. The monitor can also signal personnel to modify plasma parameters when the system is operating outside of desired specifications and requires human assistance. A notification protocol can be selected for conditions detected in the plasma process. The Plasma Process Monitor/Control System consists of a computer running software developed by Sandia National Laboratories, a commercially available spectrophotometer equipped with a charge-coupled device camera, an input/output device, and a fiber optic cable.

  20. Cold atmospheric plasma in cancer therapy

    SciTech Connect (OSTI)

    Keidar, Michael; Shashurin, Alex; Volotskova, Olga [Mechanical and Aerospace Engineering, George Washington University, Washington DC 20052 (United States)] [Mechanical and Aerospace Engineering, George Washington University, Washington DC 20052 (United States); Ann Stepp, Mary [Medical School, George Washington University, Washington DC 20052 (United States)] [Medical School, George Washington University, Washington DC 20052 (United States); Srinivasan, Priya; Sandler, Anthony [Childrens National Medical Center, Washington DC 20010 (United States)] [Childrens National Medical Center, Washington DC 20010 (United States); Trink, Barry [Head and Neck Cancer Research Division, Department of Otolaryngology, School of Medicine, Johns Hopkins University, Baltimore, Maryland 21205 (United States)] [Head and Neck Cancer Research Division, Department of Otolaryngology, School of Medicine, Johns Hopkins University, Baltimore, Maryland 21205 (United States)

    2013-05-15T23:59:59.000Z

    Recent progress in atmospheric plasmas has led to the creation of cold plasmas with ion temperature close to room temperature. This paper outlines recent progress in understanding of cold plasma physics as well as application of cold atmospheric plasma (CAP) in cancer therapy. Varieties of novel plasma diagnostic techniques were developed recently in a quest to understand physics of CAP. It was established that the streamer head charge is about 10{sup 8} electrons, the electrical field in the head vicinity is about 10{sup 7} V/m, and the electron density of the streamer column is about 10{sup 19} m{sup ?3}. Both in-vitro and in-vivo studies of CAP action on cancer were performed. It was shown that the cold plasma application selectively eradicates cancer cells in-vitro without damaging normal cells and significantly reduces tumor size in-vivo. Studies indicate that the mechanism of action of cold plasma on cancer cells is related to generation of reactive oxygen species with possible induction of the apoptosis pathway. It is also shown that the cancer cells are more susceptible to the effects of CAP because a greater percentage of cells are in the S phase of the cell cycle.

  1. Large area atmospheric-pressure plasma jet

    DOE Patents [OSTI]

    Selwyn, Gary S. (Los Alamos, NM); Henins, Ivars (Los Alamos, NM); Babayan, Steve E. (Huntington Beach, CA); Hicks, Robert F. (Los Angeles, CA)

    2001-01-01T23:59:59.000Z

    Large area atmospheric-pressure plasma jet. A plasma discharge that can be operated at atmospheric pressure and near room temperature using 13.56 MHz rf power is described. Unlike plasma torches, the discharge produces a gas-phase effluent no hotter than 250.degree. C. at an applied power of about 300 W, and shows distinct non-thermal characteristics. In the simplest design, two planar, parallel electrodes are employed to generate a plasma in the volume therebetween. A "jet" of long-lived metastable and reactive species that are capable of rapidly cleaning or etching metals and other materials is generated which extends up to 8 in. beyond the open end of the electrodes. Films and coatings may also be removed by these species. Arcing is prevented in the apparatus by using gas mixtures containing He, which limits ionization, by using high flow velocities, and by properly spacing the rf-powered electrode. Because of the atmospheric pressure operation, there is a negligible density of ions surviving for a sufficiently long distance beyond the active plasma discharge to bombard a workpiece, unlike the situation for low-pressure plasma sources and conventional plasma processing methods.

  2. Development of a plasma panel radiation detector

    E-Print Network [OSTI]

    R. Ball; J. R. Beene; M. Ben-Moshe; Y. Benhammou; R. Bensimon; J. W. Chapman; E. Etzion; C. Ferretti; P. S. Friedman; D. S. Levin; Y. Silver; R. L. Varner; C. Weaverdyck; R. Wetzel; B. Zhou; T. Anderson; K. McKinny; E. H. Bentefour

    2014-06-14T23:59:59.000Z

    This article reports on the development and experimental results of commercial plasma display panels adapted for their potential use as micropattern gas radiation detectors. The plasma panel sensors (PPS) design an materials include glass substrates, metal electrodes and inert gas mixtures which provide a physically robust, hermetically-sealed device. Plasma display panels used as detectors were tested with cosmic ray muons, beta rays and gamma rays, protons and thermal neutrons. The results demonstrated rise times and time resolution of a few nanoseconds, as well as sub-millimeter spatial resolution compatible with the pixel pitch.

  3. Radial heat transfer from a moving plasma

    E-Print Network [OSTI]

    Johnson, James Randall

    1966-01-01T23:59:59.000Z

    stabilized. The plasma generator employed in this investigation was a gas vortex stabilized dc-plasma jet as shown in Figure III-2, A dc-plasma jet may be described as a welding arc which has been placed in a con- tainer and the resulting high.... The cathode is adjustable so that the arc length or the distance between the electrodes can be varied. The 2% thoriated- tungsten tip is cooled by conduction through the brass support bar which also serves as a power lead. Separated from the cathode...

  4. Thermoelectric and Thermomagnetic Effects in Dilute Plasmas

    E-Print Network [OSTI]

    L. S. Garcia-Colin; A. L. Garcia-Perciante; A. Sandoval-Villalbazo

    2006-12-13T23:59:59.000Z

    When an electrically charged system is subjected to the action of an electromagnetic field, it responds by generating an electrical current. In the case of a multicomponent plasma other effects, the so called cross effects, influence the flow of charge as well as the heat flow. In this paper we discuss these effects and their corresponding transport coefficients in a fully ionized plasma using Boltzmann's equation. Applications to non-confined plasmas, specially to those prevailing in astrophysical systems are highlighted. Also, a detailed comparison is given with other available results.

  5. Quantum plasma effects in the classical regime

    E-Print Network [OSTI]

    G. Brodin; M. Marklund; G. Manfredi

    2008-02-01T23:59:59.000Z

    For quantum effects to be significant in plasmas it is often assumed that the temperature over density ratio must be small. In this paper we challenge this assumption by considering the contribution to the dynamics from the electron spin properties. As a starting point we consider a multicomponent plasma model, where electrons with spin up and spin down are regarded as different fluids. By studying the propagation of Alfv\\'{e}n wave solitons we demonstrate that quantum effects can survive in a relatively high-temperature plasma. The consequences of our results are discussed.

  6. Landau Diamagnetism of Degenerate Collisional Plasma

    E-Print Network [OSTI]

    A. V. Latyshev; A. A. Yushkanov

    2010-07-05T23:59:59.000Z

    For the first time the kinetic description of Landau diamagnetism for degenerate collisional plasma is given. The correct expression for transverse electric conductivity of the quantum plasma, found by authors (see arXiv:1002.1017 [math-ph] 4 Feb 2010) is used. In work S. Dattagupta, A.M. Jayannavar and N. Kumar [Current science, V. 80, No. 7, 10 April, 2001] was discussed the important problem of dissipation (collisions) influence on Landau diamagnetism. The analysis of this problem is given with the use of exact expression for transverse conductivity of quantum plasma.

  7. Hall Magnetohydrodynamics of weakly-ionized plasma

    E-Print Network [OSTI]

    B. P. Pandey; Mark Wardle

    2006-08-02T23:59:59.000Z

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

  8. Development of a plasma panel radiation detector

    SciTech Connect (OSTI)

    Ball, Robert [University of Michigan; Beene, James R [ORNL; Ben Moshe, M. [Tel Aviv University; Benhammou, Yan [Tel Aviv University; Bensimon, B [Tel Aviv University; Chapman, J. Wehrley [University of Michigan; Etzion, E [Tel Aviv University; Ferretti, Claudio [University of Michigan; Friedman, Dr. Peter S. [Integrated Sensors, LLC; Levin, Daniel S. [University of Michigan; Silver, Yiftah [Tel Aviv University; Weaverdyck, Curtis [University of Michigan; Wetzel, R. [University of Michigan; Zhou, Bing [University of Michigan; Anderson, T [GE Measurement and Control Solutions; McKinny, K [GE Measurement and Control Solutions; Bentefour, E [Ion Beam Applications

    2014-11-01T23:59:59.000Z

    This article reports on the development and experimental results of commercial plasma display panels adapted for their potential use as micropattern gas radiation detectors. The plasma panel sensor (PPS) design and materials include glass substrates, metal electrodes and inert gas mixtures which provide a physically robust, hermetically sealed device. Plasma display panels used as detectors were tested with cosmic ray muons, beta rays and gamma rays, protons, and thermal neutrons. The results demonstrated rise times and time resolution of a few nanoseconds, as well as sub-millimeter spatial resolution compatible with the pixel pitch.

  9. Computational Methods for Collisional Plasma Physics

    SciTech Connect (OSTI)

    Lasinski, B F; Larson, D J; Hewett, D W; Langdon, A B; Still, C H

    2004-02-18T23:59:59.000Z

    Modeling the high density, high temperature plasmas produced by intense laser or particle beams requires accurate simulation of a large range of plasma collisionality. Current simulation algorithms accurately and efficiently model collisionless and collision-dominated plasmas. The important parameter regime between these extremes, semi-collisional plasmas, has been inadequately addressed to date. LLNL efforts to understand and harness high energy-density physics phenomena for stockpile stewardship require accurate simulation of such plasmas. We have made significant progress towards our goal: building a new modeling capability to accurately simulate the full range of collisional plasma physics phenomena. Our project has developed a computer model using a two-pronged approach that involves a new adaptive-resolution, ''smart'' particle-in-cell algorithm: complex particle kinetics (CPK); and developing a robust 3D massively parallel plasma production code Z3 with collisional extensions. Our new CPK algorithms expand the function of point particles in traditional plasma PIC models by including finite size and internal dynamics. This project has enhanced LLNL's competency in computational plasma physics and contributed to LLNL's expertise and forefront position in plasma modeling. The computational models developed will be applied to plasma problems of interest to LLNL's stockpile stewardship mission. Such problems include semi-collisional behavior in hohlraums, high-energy-density physics experiments, and the physics of high altitude nuclear explosions (HANE). Over the course of this LDRD project, the world's largest fully electromagnetic PIC calculation was run, enabled by the adaptation of Z3 to the Advanced Simulation and Computing (ASCI) White system. This milestone calculation simulated an entire laser illumination speckle, brought new realism to laser-plasma interaction simulations, and was directly applicable to laser target physics. For the first time, magnetic fields driven by Raman scatter have been observed. Also, Raman rescatter was observed in 2D. This code and its increased suite of dedicated diagnostics are now playing a key role in studies of short-pulse, high-intensity laser matter interactions. In addition, a momentum-conserving electron collision algorithm was incorporated into Z3. Finally, Z3's portability across diverse MPP platforms enabled it to serve the LLNL computing community as a tool for effectively utilizing new machines.

  10. The temperature dependence of equilibrium plasma density

    E-Print Network [OSTI]

    B. V. Vasiliev

    2002-03-17T23:59:59.000Z

    Temperature dependence of an electron-nuclear plasma equilibrium density is considered basing on known approaches, which are given in (1)(2). It is shown that at a very high temperature, which is characteristic for a star interior, the equilibrium plasma density is almost constant and equals approximately to $10^{25}$ particles per $cm^3$. At a relatively low temperature, which is characteristic for star surface, the equilibrium plasma density is in several orders lower and depends on temperature as $T^{3/2}$.

  11. Effect of bias application to plasma density in weakly magnetized inductively coupled plasma

    SciTech Connect (OSTI)

    Kim, Hyuk; Lee, Woohyun; Park, Wanjae; Whang, Ki-Woong [Plasma Laboratory, Department of Electrical Engineering and Computer Science, Seoul National University, 599 Kwanak-ro, Kwanak-gu, Seoul 151-742 (Korea, Republic of)

    2013-07-15T23:59:59.000Z

    Independent control of the ion flux and energy can be achieved in a dual frequency inductively coupled plasma (ICP) system. Typically, the plasma density is controlled by the high-frequency antenna radio-frequency (RF) power and the ion energy is controlled by the low-frequency bias RF power. Increasing the bias power has been known to cause a decrease in the plasma density in capacitively coupled discharge systems as well as in ICP systems. However, an applied axial magnetic field was found to sustain or increase the plasma density as bias power is increased. Measurements show higher electron temperatures but lower plasma densities are obtained in ordinary ICP systems than in magnetized ICP systems under the same neutral gas pressure and RF power levels. Explanations for the difference in the behavior of plasma density with increasing bias power are given in terms of the difference in the heating mechanism in ordinary unmagnetized and magnetized ICP systems.

  12. Relation between plasma plume density and gas flow velocity in atmospheric pressure plasma

    SciTech Connect (OSTI)

    Yambe, Kiyoyuki; Taka, Shogo; Ogura, Kazuo [Graduate School of Science and Technology, Niigata University, Niigata 950-2181 (Japan)] [Graduate School of Science and Technology, Niigata University, Niigata 950-2181 (Japan)

    2014-04-15T23:59:59.000Z

    We have studied atmospheric pressure plasma generated using a quartz tube, helium gas, and copper foil electrode by applying RF high voltage. The atmospheric pressure plasma in the form of a bullet is released as a plume into the atmosphere. To study the properties of the plasma plume, the plasma plume current is estimated from the difference in currents on the circuit, and the drift velocity is measured using a photodetector. The relation of the plasma plume density n{sub plu}, which is estimated from the current and the drift velocity, and the gas flow velocity v{sub gas} is examined. It is found that the dependence of the density on the gas flow velocity has relations of n{sub plu} ? log(v{sub gas}). However, the plasma plume density in the laminar flow is higher than that in the turbulent flow. Consequently, in the laminar flow, the density increases with increasing the gas flow velocity.

  13. ECR plasma source for heavy ion beam charge neutralization

    E-Print Network [OSTI]

    Gilson, Erik

    plasmas are being considered as a medium for charge neutralizing heavy ion beams in order to focus beyond resonance. Keywords: Plasma focus; RF plasma; Beam charge neutralization 1. INTRODUCTION A possible heavyECR plasma source for heavy ion beam charge neutralization PHILIP C. EFTHIMION,1 ERIK GILSON,1

  14. LASER-PLASMA-ACCELERATOR-BASED COLLIDERS C. B. Schroeder

    E-Print Network [OSTI]

    Geddes, Cameron Guy Robinson

    LASER-PLASMA-ACCELERATOR-BASED COLLIDERS C. B. Schroeder , E. Esarey, Cs. T´oth, C. G. R. Geddes-generation linear col- lider based on laser-plasma-accelerators are discussed, and a laser-plasma-accelerator gamma-gamma () collider is considered. An example of the parameters for a 0.5 TeV laser-plasma-accelerator collider

  15. Plasma Waves in an Inhomogeneous Ionosphere Carl Caleman

    E-Print Network [OSTI]

    Plasma Waves in an Inhomogeneous Ionosphere Carl Caleman 8th April 2003 #12;Abstract The inhomogeneity of space plasma is the cause of interesting physical phenomena. The plasma in our ionosphere waves reaches the ionosphere, interacts with the local plasma there, and are reflected back again one

  16. Self-consistent quasi-particle model for relativistic plasma

    E-Print Network [OSTI]

    Vishnu M. Bannur

    2006-02-24T23:59:59.000Z

    Relativistic plasma with radiation at thermodynamic equilibrium is ageneral system of interest in astrophysics and high energy physics. We develop a new self-consistent quasi-particle model for such a system to take account of collective behaviour of plasma andthermodynamic properties are derived. It is applied to electrodynamic plasma and quark gluon plasma and compared with existing results.

  17. ELMs and the Performance of Burning Plasma Experiments

    E-Print Network [OSTI]

    International Institute of Tech., Pathumthani 12121, Thailand 3SAIC, San Diego, CA 92121, USA IEA Workshop on Burning Plasma Physics and Simulation 4-5 July 2005 #12;Predictive Modeling of Burning Plasmas IEA of burning plasma experiments using static and dynamic pedestal models IEA Workshop on Burning Plasma Physics

  18. Turbulence Spreading and Nonlocal Transport in Magnetized Plasmas

    E-Print Network [OSTI]

    Fominov, Yakov

    transport experiment in tokamak plasmas: heat modulation and fast heat pulse propagation in JET. -- Non

  19. Fun With Plasma Turbulence, From Fusion Energy to Black Holes

    E-Print Network [OSTI]

    Hammett, Greg

    . L. F. Richardson (1881-1953) #12;Plasma self-heating Tritium replenishment Li Electricity Hydrogen

  20. Physics 782 Computer Simulation of Plasma CLASS DETAILS

    E-Print Network [OSTI]

    Cassak, Paul

    and refine physical understanding and intuition of phenomena encountered in plasma research." Two main

  1. Evaluation of Plasma Resistant Hollow Fiber Membranes For Artificial Lungs

    E-Print Network [OSTI]

    Federspiel, William J.

    Evaluation of Plasma Resistant Hollow Fiber Membranes For Artificial Lungs HEIDE J. EASH,* HEATHER in artificial lungs (ox- ygenators) undergo plasma leakage (or wetting) in which blood plasma slowly fills2 gas permeance of a plasma resistant fiber imposes the greatest constraint upon artificial lung

  2. QCD plasma instability and thermalisation at heavy ion collisions

    E-Print Network [OSTI]

    Dietrich Bodeker; Kari Rummukainen

    2007-11-13T23:59:59.000Z

    Under suitable non-equilibrium conditions QCD plasma can develop plasma instabilities, where some modes of the plasma grow exponentially. It has been argued that these instabilities can play a significant role in the thermalisation of the plasma in heavy-ion collision experiments. We study the instability in SU(2) plasmas using the hard thermal loop effective lattice theory, which is suitable for studying real-time evolution of long wavelength modes in the plasma. We observe that under suitable conditions the plasma can indeed develop an instability which can grow to a very large magnitude, necessary for the rapid thermalisation in heavy-ion collisions.

  3. Elmo bumpy square plasma confinement device

    DOE Patents [OSTI]

    Owen, L.W.

    1985-01-01T23:59:59.000Z

    The invention is an Elmo bumpy type plasma confinement device having a polygonal configuration of closed magnet field lines for improved plasma confinement. In the preferred embodiment, the device is of a square configuration which is referred to as an Elmo bumpy square (EBS). The EBS is formed by four linear magnetic mirror sections each comprising a plurality of axisymmetric assemblies connected in series and linked by 90/sup 0/ sections of a high magnetic field toroidal solenoid type field generating coils. These coils provide corner confinement with a minimum of radial dispersion of the confined plasma to minimize the detrimental effects of the toroidal curvature of the magnetic field. Each corner is formed by a plurality of circular or elliptical coils aligned about the corner radius to provide maximum continuity in the closing of the magnetic field lines about the square configuration confining the plasma within a vacuum vessel located within the various coils forming the square configuration confinement geometry.

  4. Collisions with Black Holes and Deconfined Plasmas

    E-Print Network [OSTI]

    Amsel, Aaron J; Virmani, Amitabh

    2008-01-01T23:59:59.000Z

    We use AdS/CFT to investigate i) high energy collisions with balls of deconfined plasma surrounded by a confining phase and ii) the rapid localized heating of a deconfined plasma. Both of these processes are dual to collisions with black holes, where they result in the nucleation of a new "arm" of the horizon reaching out in the direction of the incident object. We study the resulting non-equilibrium dynamics in a universal limit of the gravitational physics which may indicate universal behavior of deconfined plasmas at large N_c. Process (i) produces "virtual" arms of the plasma ball, while process (ii) can nucleate surprisingly large bubbles of a higher temperature phase.

  5. Collisions with Black Holes and Deconfined Plasmas

    E-Print Network [OSTI]

    Aaron J. Amsel; Donald Marolf; Amitabh Virmani

    2007-12-13T23:59:59.000Z

    We use AdS/CFT to investigate i) high energy collisions with balls of deconfined plasma surrounded by a confining phase and ii) the rapid localized heating of a deconfined plasma. Both of these processes are dual to collisions with black holes, where they result in the nucleation of a new "arm" of the horizon reaching out in the direction of the incident object. We study the resulting non-equilibrium dynamics in a universal limit of the gravitational physics which may indicate universal behavior of deconfined plasmas at large N_c. Process (i) produces "virtual" arms of the plasma ball, while process (ii) can nucleate surprisingly large bubbles of a higher temperature phase.

  6. Thermal Plasma Systems for Industrial Processes

    E-Print Network [OSTI]

    Fey, M. G.; Meyer, T. N.; Reed, W. H.; Philbrook, W. O.

    1982-01-01T23:59:59.000Z

    furnaces, extending from below 2000 F to almost any conceivably useful processing temperature, with efficiencies much higher than can be achieved with combustion heating equipment. Numerous applications for plasma systems exist in the chemical...

  7. Propulsion mechanisms in a helicon plasma thruster

    E-Print Network [OSTI]

    Sinenian, Nareg

    2008-01-01T23:59:59.000Z

    Electric thrusters offer an attractive option for various in-space propulsion tasks due to their high thrust efficiencies. The performance characteristics of a compact electric thruster utilizing a helicon plasma source ...

  8. Exploiting Laboratory and Heliophysics Plasma Synergies

    E-Print Network [OSTI]

    Dahlburg, Jill

    Recent advances in space-based heliospheric observations, laboratory experimentation, and plasma simulation codes are creating an exciting new cross-disciplinary opportunity for understanding fast energy release and transport ...

  9. Princeton Plasma Physics Laboratory NSTX Experimental Proposal

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    will therefore aim to develop a basis for predictive understanding to advance long-pulse high performance plasma research on NSTX, and to strengthen the scientific basis for the ITER hybrid mode operation. 3

  10. Cathodic Vacuum Arc Plasma of Thallium

    E-Print Network [OSTI]

    Yushkov, Georgy Yu.; Anders, Andre

    2006-01-01T23:59:59.000Z

    P. J. Martin, Handbook of Vacuum Arc Science and Technology.charge state distributions of vacuum arc plasmas: The originand the broadening of vacuum-arc ion charge state

  11. Plasma momentum meter for momentum flux measurements

    DOE Patents [OSTI]

    Zonca, F.; Cohen, S.A.; Bennett, T.; Timberlake, J.R.

    1993-08-24T23:59:59.000Z

    An apparatus is described for measuring momentum flux from an intense plasma stream, comprising: refractory target means oriented normal to the flow of said plasma stream for bombardment by said plasma stream where said bombardment by said plasma stream applies a pressure to said target means, pendulum means for communicating a translational displacement of said target to a force transducer where said translational displacement of said target is transferred to said force transducer by an elongated member coupled to said target, where said member is suspended by a pendulum configuration means and where said force transducer is responsive to said translational displacement of said member, and force transducer means for outputting a signal representing pressure data corresponding to said displacement.

  12. COALITION FOR PLASMA SCIENCE Fusion Power Associates

    E-Print Network [OSTI]

    · Materials: brochure, two-pagers, posters. · Web page (plasmacoalition.org): links to plasma sites, evaluated of the CPS web site ­ Ask for input on how to improve web page · Solicit for individual(s) to conduct

  13. Tailored ion energy distributions on plasma electrodes

    SciTech Connect (OSTI)

    Economou, Demetre J. [Plasma Processing Laboratory, Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004 (United States)] [Plasma Processing Laboratory, Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204-4004 (United States)

    2013-09-15T23:59:59.000Z

    As microelectronic device features continue to shrink approaching atomic dimensions, control of the ion energy distribution on the substrate during plasma etching and deposition becomes increasingly critical. The ion energy should be high enough to drive ion-assisted etching, but not too high to cause substrate damage or loss of selectivity. In many cases, a nearly monoenergetic ion energy distribution (IED) is desired to achieve highly selective etching. In this work, the author briefly reviews: (1) the fundamentals of development of the ion energy distribution in the sheath and (2) methods to control the IED on plasma electrodes. Such methods include the application of “tailored” voltage waveforms on an electrode in continuous wave plasmas, or the application of synchronous bias on a “boundary electrode” during a specified time window in the afterglow of pulsed plasmas.

  14. High-beta plasma effects in a low-pressure helicon plasma

    SciTech Connect (OSTI)

    Corr, C. S.; Boswell, R. W. [Space Plasma, Power and Propulsion Group (SP3), Research School of Physical Science and Engineering, Australian National University, Canberra ACT 0200 (Australia)

    2007-12-15T23:59:59.000Z

    In this work, high-beta plasma effects are investigated in a low-pressure helicon plasma source attached to a large volume diffusion chamber. When operating above an input power of 900 W and a magnetic field of 30 G a narrow column of bright blue light (due to Ar II radiation) is observed along the axis of the diffusion chamber. With this blue mode, the plasma density is axially very uniform in the diffusion chamber; however, the radial profiles are not, suggesting that a large diamagnetic current might be induced. The diamagnetic behavior of the plasma has been investigated by measuring the temporal evolution of the magnetic field (B{sub z}) and the plasma kinetic pressure when operating in a pulsed discharge mode. It is found that although the electron pressure can exceed the magnetic field pressure by a factor of 2, a complete expulsion of the magnetic field from the plasma interior is not observed. In fact, under our operating conditions with magnetized ions, the maximum diamagnetism observed is {approx}2%. It is observed that the magnetic field displays the strongest change at the plasma centre, which corresponds to the maximum in the plasma kinetic pressure. These results suggest that the magnetic field diffuses into the plasma sufficiently quickly that on a long time scale only a slight perturbation of the magnetic field is ever observed.

  15. Tapered plasma channels to phase-lock accelerating and focusing forces in laser-plasma accelerators

    E-Print Network [OSTI]

    Rittershofer, W.

    2010-01-01T23:59:59.000Z

    P/P c ultra-intense laser pulses, such that a 2 ?laser-plasma accel- erators are actively being investigated as ultra-

  16. Measuring the temperature of microparticles in plasmas

    SciTech Connect (OSTI)

    Maurer, Horst; Basner, Ralf [INP Greifswald, Felix-Hausdorff-Str. 2, D-17489 Greifswald (Germany); Kersten, Holger [IEAP Kiel, Leibnizstr. 19, D-24098 Kiel (Germany)

    2008-09-15T23:59:59.000Z

    Temperature sensitive features of particular phosphors were utilized for measuring the temperature T{sub p} of microparticles, confined in the sheath of a rf plasma. The experiments were performed under variation of argon pressure and rf power of the process plasma. T{sub p} has been determined by evaluation of characteristic fluorescent lines. The results for T{sub p} measurements are strongly dependent on rf power and gas pressure.

  17. Advances and Challenges in Computational Plasma Science

    SciTech Connect (OSTI)

    W.M. Tang; V.S. Chan

    2005-01-03T23:59:59.000Z

    Scientific simulation, which provides a natural bridge between theory and experiment, is an essential tool for understanding complex plasma behavior. Recent advances in simulations of magnetically-confined plasmas are reviewed in this paper with illustrative examples chosen from associated research areas such as microturbulence, magnetohydrodynamics, and other topics. Progress has been stimulated in particular by the exponential growth of computer speed along with significant improvements in computer technology.

  18. Local fields in strongly coupled plasmas

    SciTech Connect (OSTI)

    Pollock, E.L.; Weisheit, J.C.

    1984-06-01T23:59:59.000Z

    Computer simulation techniques and important static properties of plasma microfields are discussed. The relevant timescales are introduced for dynamical atomic problems, and some time-dependent properties of microfields are discussed. In the last two sections of the paper these results are applied to two problems relevant to the spectroscopy of dense plasmas: (1) broadening of spectral lines, and (2) screening in inelastic electron-ion collisions.

  19. A model for transonic plasma flow

    SciTech Connect (OSTI)

    Guazzotto, Luca, E-mail: luca.guazzotto@rochester.edu [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)] [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States); Hameiri, Eliezer, E-mail: hameiri@cims.nyu.edu [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States)] [Courant Institute of Mathematical Sciences, New York University, New York, New York 10012 (United States)

    2014-02-15T23:59:59.000Z

    A linear, two-dimensional model of a transonic plasma flow in equilibrium is constructed and given an explicit solution in the form of a complex Laplace integral. The solution indicates that the transonic state can be solved as an elliptic boundary value problem, as is done in the numerical code FLOW [Guazzotto et al., Phys. Plasmas 11, 604 (2004)]. Moreover, the presence of a hyperbolic region does not necessarily imply the presence of a discontinuity or any other singularity of the solution.

  20. Plasma flow switch experiment on Procyon

    SciTech Connect (OSTI)

    Benage, J.F. Jr.; Bowers, R.; Peterson, D. [and others

    1995-09-01T23:59:59.000Z

    This report presents the results obtained from a series of plasma flow switch experiments done on the Procyon explosive pulse power generator. These experiments involved switching into a fixed inductance dummy load and also into a dynamic implosion load. The results indicated that the switch did fairly well at switching current into the load, but the results for the implosion are more ambiguous. The results are compared to calculations and the implications for future plasma flow switch work are discussed.

  1. Harmonic generation from indium-rich plasmas

    SciTech Connect (OSTI)

    Ganeev, R. A.; Kulagin, I. A. [Akadempribor Scientific Association, Academy of Sciences of Uzbekistan, Tashkent 700125 (Uzbekistan); Singhal, H.; Naik, P. A.; Arora, V.; Chakravarty, U.; Chakera, J. A.; Khan, R. A.; Raghuramaiah, M.; Gupta, P. D. [Laser Plasma Division, Raja Ramanna Centre for Advanced Technology, Indore 452013 (India); Redkin, P. V. [Samarkand State University, Samarkand 703004 (Uzbekistan)

    2006-12-15T23:59:59.000Z

    An experimental study of high-order harmonic generation in In, InSb, InP, and InGaP plasmas using femtosecond laser radiation with variable chirp is presented. Intensity enhancement of the 13th and 21st harmonics compared to the neighboring harmonics by a factor of 200 and 10, respectively, is observed. It is shown that the harmonic spectrum from indium-containing plasma plumes can be considerably modified by controlling the chirp of the driving laser pulse.

  2. Contrib. Plasma Phys. 52, No. 10, 789 794 (2012) / DOI 10.1002/ctpp.201200076 Recent Progress in Complex Plasmas

    E-Print Network [OSTI]

    Fehske, Holger

    " at the Universities in Greifswald and Kiel as well as at the Leibniz-Institute for Plasma Research and Technology interacting with solid surfaces, see Fig. 1. The importance of complex plasma research derives from of nanotechnology including plasma-assisted deposition or etching. The 2007 review on plasma research and its

  3. Autumn College on Plasma Physics, ICTP 2005 Generation and dynamics of large scale flows in magnetized plasmas

    E-Print Network [OSTI]

    EURATOM -- Risø National Laboratory Optics and Plasma Research Department, OPL-128 DK-4000 Roskilde

  4. Plasma Chemistry and Plasma Processing, Vol. 23, No. 3, September 2003 ( 2003) Ozone Production in the Negative DC Corona

    E-Print Network [OSTI]

    Chen, Junhong

    Plasma Chemistry and Plasma Processing, Vol. 23, No. 3, September 2003 ( 2003) Ozone Production to the effect of discharge polarity on the number of energetic electrons in the corona plasma. The number of electrons is one order of magnitude greater and the chemically reactiûe plasma region extends beyond

  5. Plasma Chemistry and Plasma Processing, Vol. 22, No. 2, June 2002 ( 2002) Electron Density and Energy Distributions in

    E-Print Network [OSTI]

    Chen, Junhong

    Plasma Chemistry and Plasma Processing, Vol. 22, No. 2, June 2002 ( 2002) Electron Density in the corona plasma is required to quantify the chemical processes. In this paper, the electron density- ness of the plasma and the electron energy distribution are not affected. Smaller electrodes produce

  6. Termination of a Magnetized Plasma on a Neutral Gas: The End of the Plasma C. M. Cooper and W. Gekelman

    E-Print Network [OSTI]

    California at Los Angles, University of

    Termination of a Magnetized Plasma on a Neutral Gas: The End of the Plasma C. M. Cooper and W of a confining magnetic field. This is the first experiment to measure plasma termination within a neutral gas by a lanthanum hexaboride (LaB6) cathode terminates entirely within a neutral helium gas. The plasma is weakly

  7. Plasma etching: Yesterday, today, and tomorrow

    SciTech Connect (OSTI)

    Donnelly, Vincent M.; Kornblit, Avinoam [Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204 (United States)] [Department of Chemical and Biomolecular Engineering, University of Houston, Houston, Texas 77204 (United States)

    2013-09-15T23:59:59.000Z

    The field of plasma etching is reviewed. Plasma etching, a revolutionary extension of the technique of physical sputtering, was introduced to integrated circuit manufacturing as early as the mid 1960s and more widely in the early 1970s, in an effort to reduce liquid waste disposal in manufacturing and achieve selectivities that were difficult to obtain with wet chemistry. Quickly, the ability to anisotropically etch silicon, aluminum, and silicon dioxide in plasmas became the breakthrough that allowed the features in integrated circuits to continue to shrink over the next 40 years. Some of this early history is reviewed, and a discussion of the evolution in plasma reactor design is included. Some basic principles related to plasma etching such as evaporation rates and Langmuir–Hinshelwood adsorption are introduced. Etching mechanisms of selected materials, silicon, silicon dioxide, and low dielectric-constant materials are discussed in detail. A detailed treatment is presented of applications in current silicon integrated circuit fabrication. Finally, some predictions are offered for future needs and advances in plasma etching for silicon and nonsilicon-based devices.

  8. INSTITUTE OF PHYSICS PUBLISHING PLASMA SOURCES SCIENCE AND TECHNOLOGY Plasma Sources Sci. Technol. 16 (2007) 233239 doi:10.1088/0963-0252/16/2/004

    E-Print Network [OSTI]

    Choueiri, Edgar

    -pinch [3], spheromak [4] and plasma opening switch [5]. The plasma source used here is very repeatable [6

  9. Comment on 'Kinetic theory of surface waves in plasma jets' [Phys. Plasmas 9, 701 (2002)

    SciTech Connect (OSTI)

    Lee, Hee J. [Department of Physics, Hanyang University, Seoul 133-791 (Korea, Republic of)

    2005-09-15T23:59:59.000Z

    It is shown that the dispersion relation of electromagnetic surface waves propagating on the interface between a vacuum and drifting Maxwellian plasmas derived in recent work [Phys. Plasmas 9, 701 (2002)] is incorrect. Correct electromagnetic and electrostatic dispersion relations are obtained.

  10. Plasmas in Multiphase Media: Bubble Enhanced Discharges in Liquids and Plasma/Liquid Phase Boundaries

    SciTech Connect (OSTI)

    Kushner, Mark Jay [University of Michigan] [University of Michigan

    2014-07-10T23:59:59.000Z

    In this research project, the interaction of atmospheric pressure plasmas with multi-phase media was computationally investigated. Multi-phase media includes liquids, particles, complex materials and porous surfaces. Although this investigation addressed fundamental plasma transport and chemical processes, the outcomes directly and beneficially affected applications including biotechnology, medicine and environmental remediation (e.g., water purification). During this project, we made advances in our understanding of the interaction of atmospheric pressure plasmas in the form of dielectric barrier discharges and plasma jets with organic materials and liquids. We also made advances in our ability to use computer modeling to represent these complex processes. We determined the method that atmospheric pressure plasmas flow along solid and liquid surfaces, and through endoscopic like tubes, deliver optical and high energy ion activation energy to organic and liquid surfaces, and produce reactivity in thin liquid layers, as might cover a wound. We determined the mechanisms whereby plasmas can deliver activation energy to the inside of liquids by sustaining plasmas in bubbles. These findings are important to the advancement of new technology areas such as plasma medicine

  11. Study on plasma parameters and dust charging in an electrostatically plugged multicusp plasma device

    SciTech Connect (OSTI)

    Kakati, B.; Kausik, S. S.; Saikia, B. K. [Centre of Plasma Physics, Institute for Plasma Research, Nazirakhat, Sonapur-782 402, Kamrup, Assam (India); Bandyopadhyay, M. [ITER-India, Institute for Plasma Research, Bhat, Gandhinagar- 382 428 (India)

    2011-06-15T23:59:59.000Z

    The effect of the electrostatic confinement potential on the charging of dust grains and its relationship with the plasma parameters has been studied in an electrostatically plugged multicusp dusty plasma device. Electrostatic plugging is implemented by biasing the electrically isolated magnetic multicusp channel walls. The experimental results show that voltage applied to the channel walls can be a controlling parameter for dust charging.

  12. Final Progress Report for Ionospheric Dusty Plasma In the Laboratory [Smokey Plasma

    SciTech Connect (OSTI)

    Robertson, Scott [Professor

    2010-09-28T23:59:59.000Z

    “Ionospheric Dusty Plasma in the Laboratory” is a research project with the purpose of finding and reproducing the characteristics of plasma in the polar mesosphere that is unusually cold (down to 140 K) and contains nanometer-sized dust particles. This final progress report summarizes results from four years of effort that include a final year with a no-cost extension.

  13. MODELING OF DAMAGE AND LIFETIME ANALYSIS OF PLASMA FACING COMPONENTS DURING PLASMA INSTABILITIES IN TOKAMAKS

    E-Print Network [OSTI]

    Harilal, S. S.

    MODELING OF DAMAGE AND LIFETIME ANALYSIS OF PLASMA FACING COMPONENTS DURING PLASMA INSTABILITIES of the damage will essentially depend on the intensity and duration of energy deposited on PFC. Both bulk and surface damages can take place depending on these parameters. For this reason different deposition times

  14. Transversal plasma resonance in a nonmagnetized plasma and possibilities of practical employment of it

    E-Print Network [OSTI]

    F. F. Mende

    2005-06-09T23:59:59.000Z

    It is shown that in a nonmagnetized plasma, beside the longitudinal Langmuir resonance, there may also exist the transversal resonance. Both these resonance kinds are degenerated. Employment of the transversal resonance makes it possible to design resonators and filters, as well as powerful single-frequency lasers operating on the basis of collective oscillations of plasma.

  15. Principles of Rotating Plasma in Plasma Propulsion Systems N. J. Fisch

    E-Print Network [OSTI]

    Principles of Rotating Plasma in Plasma Propulsion Systems N. J. Fisch Department of Astrophysical Sciences Princeton University 33rd International Electric Propulsion Conference (IEPC2013 in crossed electric and magnetic fields. This talk reviews at a tutorial level some of the interesting

  16. ULTRAINTENSE AND ULTRASHORT LASER PULSES FROM RAMAN AMPLIFICATION IN PLASMA FOR LASER-PLASMA ACCELERATORS

    E-Print Network [OSTI]

    Wurtele, Jonathan

    to be a promising alternative for obtaining ultra-powerful peta-watt laser pulses. Issues in the system are the kiULTRAINTENSE AND ULTRASHORT LASER PULSES FROM RAMAN AMPLIFICATION IN PLASMA FOR LASER trapping effect in the Raman pulse amplification in plasma. An ultraintense and ultrashort laser pulse

  17. Renormalization plasma shielding effects on scattering entanglement fidelity in dense plasmas

    SciTech Connect (OSTI)

    Lee, Gyeong Won [Department of Bionanotechnology, Hanyang University, Ansan, Kyunggi-Do 426-791 (Korea, Republic of); Shim, Jaewon [Department of Applied Physics, Hanyang University, Ansan, Kyunggi-Do 426-791 (Korea, Republic of); Jung, Young-Dae, E-mail: ydjung@hanyang.ac.kr [Department of Bionanotechnology, Hanyang University, Ansan, Kyunggi-Do 426-791 (Korea, Republic of); Department of Applied Physics, Hanyang University, Ansan, Kyunggi-Do 426-791 (Korea, Republic of); Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, 110 8th Street, Troy, New York 12180-3590 (United States)

    2014-10-15T23:59:59.000Z

    The influence of renormalization plasma screening on the entanglement fidelity for the elastic electron-atom scattering is investigated in partially ionized dense hydrogen plasmas. The partial wave analysis and effective interaction potential are employed to obtain the scattering entanglement fidelity in dense hydrogen plasmas as functions of the collision energy, the Debye length, and the renormalization parameter. It is found that the renormalization plasma shielding enhances the scattering entanglement fidelity. Hence, we show that the transmission of the quantum information can be increased about 10% due to the renormalization shielding effect in dense hydrogen plasmas. It is also found that the renormalization shielding effect on the entanglement fidelity for the electron-atom collision increases with an increase of the collision energy. In addition, the renormalization shielding function increases with increasing collision energy and saturates to the unity with an increase of the Debye length.

  18. Structure of micro-instabilities in tokamak plasmas: Stiff transport or plasma eruptions?

    SciTech Connect (OSTI)

    Dickinson, D., E-mail: dd502@york.ac.uk [York Plasma Institute, Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom); EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom); Roach, C. M. [EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom)] [EURATOM/CCFE Fusion Association, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom); Skipp, J. M.; Wilson, H. R. [York Plasma Institute, Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom)] [York Plasma Institute, Department of Physics, University of York, Heslington, York YO10 5DD (United Kingdom)

    2014-01-15T23:59:59.000Z

    Solutions to a model 2D eigenmode equation describing micro-instabilities in tokamak plasmas are presented that demonstrate a sensitivity of the mode structure and stability to plasma profiles. In narrow regions of parameter space, with special plasma profiles, a maximally unstable mode is found that balloons on the outboard side of the tokamak. This corresponds to the conventional picture of a ballooning mode. However, for most profiles, this mode cannot exist, and instead, a more stable mode is found that balloons closer to the top or bottom of the plasma. Good quantitative agreement with a 1D ballooning analysis is found, provided the constraints associated with higher order profile effects, often neglected, are taken into account. A sudden transition from this general mode to the more unstable ballooning mode can occur for a critical flow shear, providing a candidate model for why some experiments observe small plasma eruptions (Edge Localised Modes, or ELMs) in place of large Type I ELMs.

  19. Microscopic Motion of Liquid Metal Plasma Facing Components In A Diverted Plasma

    SciTech Connect (OSTI)

    Jaworski, M A; Morley, N B; Abrams, T; Kaita, R; Kallman, J; Kugel, H; Majeski, R

    2010-09-22T23:59:59.000Z

    Liquid metal plasma facing components (PFCs) have been identified as an alternative material for fusion plasma experiments. The use of a liquid conductor where significant magnetic fields are present is considered risky, with the possibility of macroscopic fluid motion and possible ejection into the plasma core. Analysis is carried out on thermoelectric magnetohydrodynamic (TEMHD) forces caused by temperature gradients in the liquid-container system itself in addition to scrape-off-layer currents interacting with the PFC from a diverted plasma. Capillary effects at the liquid-container interface will be examined which govern droplet ejection criteria. Stability of the interface is determined using linear stability methods. In addition to application to liquidmetal PFCs, thin film liquidmetal effects have application to current and future devices where off-normal events may liquefy portions of the first wall and other plasma facing components.

  20. Exploration of Plasma Jets Approach to High Energy Density Physics

    SciTech Connect (OSTI)

    Chen, Chiping [Massachusetts Institute of Technology

    2013-08-26T23:59:59.000Z

    High-energy-density laboratory plasma (HEDLP) physics is an emerging, important area of research in plasma physics, nuclear physics, astrophysics, and particle acceleration. While the HEDLP regime occurs at extreme conditions which are often found naturally in space but not on the earth, it may be accessible by colliding high intensity plasmas such as high-energy-density plasma jets, plasmoids or compact toroids from plasma guns. The physics of plasma jets is investigated in the context of high energy density laboratory plasma research. This report summarizes results of theoretical and computational investigation of a plasma jet undergoing adiabatic compression and adiabatic expansion. A root-mean-squared (rms) envelope theory of plasma jets is developed. Comparison between theory and experiment is made. Good agreement between theory and experiment is found.