National Library of Energy BETA

Sample records for glow related topics

  1. Stratified-charge glow plug ignition engine experiments. Topical report

    SciTech Connect (OSTI)

    Thring, R.H.; Leet, J.A.

    1991-05-01

    An investigation was conducted to study the feasibility of operating a natural gas two-stroke engine using glow plug ignition with very lean mixtures. The term Stratified-Charge Glow Plus Ignition (SCGI) was coined to describe the engine. A JLO DL 365 single-cylinder, two-stroke, diesel engine was converted first to a natural gas fueled spark-ignited engine for the baseline tests, and then to the SCGI engine. The engine was successfully run, but was found to be sensitive to various conditions such as the glow plug temperature. The engine ran very lean, to an equivalence ratio of 0.33, offering the potential of good fuel economy and low NOx emissions. Numerous photographs, diagrams, and charts are included.

  2. Discussion series on PURPA related topics: load management

    SciTech Connect (OSTI)

    Sturgeon, J I

    1980-08-01

    The Discussion Series on PURPA Related Topics is composed of five volumes: Metering, Billing, Information to Customers, Load Management Techniques and Master Metering. These reports are based on twenty-five Demonstration and Implementation projects sponsored and directed during the past five years by the US Department of Energy, Office of Utility Systems. Each of the topics bears directly on one or more of the federal standards contained in the Public Utilities Regulatory Policies Act of 1978 (PURPA). This volume, Load Management Techniques, relates primarily to the Time-of-Day rates standard, PURPA IB(d)3. The experiences related in this report deal, in part, with the procedures and equipment which are affected when time-of-day rates are implemented. One goal of this report is to describe how people in a variety of settings have dealt with the many practical issues in load management. Another is to highlight the lessons and summarize the experiences of the Project participants. This report does not stand as a manual nor provide prescriptive guidelines on how to deal with the topic. Rather it offers an account for those charged with the responsibility of implementing PURPA requirements to learn from the insights and problems which occurred during the Rate Demonstration projects.

  3. Powerful glow discharge excilamp

    DOE Patents [OSTI]

    Tarasenko, Victor F.; Panchenko, Aleksey N.; Skakun, Victor S.; Sosnin, Edward A.; Wang, Francis T.; Myers, Booth R.; Adamson, Martyn G.

    2002-01-01

    A powerful glow discharge lamp comprising two coaxial tubes, the outer tube being optically transparent, with a cathode and anode placed at opposite ends of the tubes, the space between the tubes being filled with working gas. The electrodes are made as cylindrical tumblers placed in line to one other in such a way that one end of the cathode is inserted into the inner tube, one end of the anode coaxially covers the end of the outer tube, the inner tube penetrating and extending through the anode. The increased electrodes' surface area increases glow discharge electron current and, correspondingly, average radiation power of discharge plasma. The inner tube contains at least one cooling liquid tube placed along the axis of the inner tube along the entire lamp length to provide cathode cooling. The anode has a circumferential heat extracting radiator which removes heat from the anode. The invention is related to lighting engineering and can be applied for realization of photostimulated processes under the action of powerful radiation in required spectral range.

  4. Glow discharge detector

    DOE Patents [OSTI]

    Koo, Jackson C.; Yu, Conrad M.

    2002-01-01

    A highly sensitive electronic ion cell for the measurement of trace elements in He carrier gas which involves glow discharge. A constant wave (CW) glow discharge detector which is controlled through a biased resistor, can detect the change of electron density caused by impurities in the He carrier gas by many orders of magnitude larger than that caused by direct ionization or electron capture. The glow discharge detector utilizes a floating pseudo-electrode to form a probe in or near the plasma. By using this probe, the large variation of electron density due to trace amounts of impurities can be directly measured.

  5. Stable glow discharge detector

    DOE Patents [OSTI]

    Koo, Jackson C.; Yu, Conrad M.

    2004-05-18

    A highly sensitive electronic ion cell for the measurement of trace elements in He carrier gas which involves glow discharge. A constant wave (CW) stable glow discharge detector which is controlled through a biased resistor, can detect the change of electron density caused by impurities in the He carrier gas by many orders of magnitude larger than that caused by direct ionization or electron capture. The stable glow discharge detector utilizes a floating pseudo-electrode to form a probe in or near the plasma and a solid rod electrode. By using this probe, the large variation of electron density due to trace amounts of impurities can be directly measured. The solid rod electrode provides greater stability and thus easier alignment.

  6. Discussion series on PURPA related topics: information to customers

    SciTech Connect (OSTI)

    Sturgeon, J I

    1980-08-01

    This volume relates primarily to Time-of-Day rates standard, PURPA IB(d)3, and deals with the content and methods of providing rate and conservation information to customers when Time-of-Day rates are used. Information to customers in the Demonstration and Pilot Projects fell mainly into four categories: administrative communications; explanations of new rate structures; information and advice on load management; and facts, recommendations and encouragements about energy conservation and end-use improvement. Administrative communications were about such matters as the existence of Projects, their funding, their periods of performance, the selection of their test customers, conditions of participation, procedural changes during the tests, and the time and conditions of ending the tests. These communications were important to good customer cooperation. All Demonstration Projects devoted considerable effort to the crucial task of clearly explaining the rationale of Time-of-Use (TOU) pricing and the test rate structures. The Projects then presented the concept of TOU pricing as a means of (a) fairly charging customers the true cost of their electricity and (b) rewarding them for shifting consumption to times when costs are less. For the most part, Demonstration Projects gave specific information on the individual customer's own rate structure and none on any others that were under test. The information was presented in face-to-face interviews, group presentations, television, radio, and print media, and traveling exhibits. The results are evaluated. (LCL)

  7. The Use of DC Glow Discharges as Undergraduate Educational Tools

    SciTech Connect (OSTI)

    Stephanie A. Wissel and Andrew Zwicker, Jerry Ross, and Sophia Gershman

    2012-10-09

    Plasmas have a beguiling way of getting students excited and interested in physics. We argue that plasmas can and should be incorporated into the undergraduate curriculum as both demonstrations and advanced investigations of electromagnetism and quantum effects. Our device, based on a direct current (DC) glow discharge tube, allows for a number of experiments into topics such as electrical breakdown, spectroscopy, magnetism, and electron temperature.

  8. Atom probe field ion microscopy and related topics: A bibliography 1990

    SciTech Connect (OSTI)

    Russell, K.F.; Miller, M.K.

    1991-12-01

    This bibliography includes references related to the following topics: atom probe field ion microscopy (APFIM), field ion microscopy (FIM), field emission (FE), ion sources, and field desorption mass microscopy (FDMM). Technique-orientated studies and applications are included. The bibliography covers the period 1990. The references contained in this document were compiled from a variety of sources including computer searches and personal lists of publications. To reduce the length of this document, the references have been reduced to the minimum necessary to locate the articles. The references, listed alphabetically by authors, are subdivided into the categories listed in paragraph one above. An Addendum of references missed in previous bibliographies is included.

  9. Browse OSTIblog Articles by Related Topics | OSTI, US Dept of Energy Office

    Office of Scientific and Technical Information (OSTI)

    of Scientific and Technical Information Browse OSTIblog Articles by Related Topics 1 2 3 7 9 @ A B C D E F G H I J K L M N O P Q R S T U V W X Y 1970s 21st century 3D Printing 70th Anniversary 9/11 @ostigov Accelerated Climate Modeling for Energy accelerator accepted manuscript access accomplishments ACME additive manufacturing adhesive tape administrative interval ADNI Advanced Photon Source Advanced Research Projects Agency-Energy Advanced Scientific Computing Research AEC Aerogels Albert

  10. Constricted glow discharge plasma source

    DOE Patents [OSTI]

    Anders, Andre; Anders, Simone; Dickinson, Michael; Rubin, Michael; Newman, Nathan

    2000-01-01

    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.

  11. An Innovative Pressure Sensor Glow Plug Offers Improved Diesel...

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

    An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control ...

  12. Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel...

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

    Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines 2005 Diesel Engine Emissions ...

  13. Atmospheric sampling glow discharge ionization source

    DOE Patents [OSTI]

    McLuckey, S.A.; Glish, G.L.

    1989-07-18

    An atmospheric sampling glow discharge ionization source that can be used in combination with an analytical instrument which operates at high vacuum, such as a mass spectrometer. The atmospheric sampling glow discharge ionization source comprises a chamber with at least one pair of electrodes disposed therein, an inlet for a gaseous sample to be analyzed and an outlet communicating with an analyzer which operates at subatmospheric pressure. The ionization chamber is maintained at a pressure below atmospheric pressure, and a voltage difference is applied across the electrodes to induce a glow discharge between the electrodes, so that molecules passing through the inlet are ionized by the glow discharge and directed into the analyzer. The ionization source accepts the sample under atmospheric pressure conditions and processes it directly into the high vacuum instrument, bridging the pressure gap and drawing off unwanted atmospheric gases. The invention also includes a method for analyzing a gaseous sample using the glow discharge ionization source described above. 3 figs.

  14. Atmospheric sampling glow discharge ionization source

    DOE Patents [OSTI]

    McLuckey, Scott A. (Oak Ridge, TN); Glish, Gary L. (Oak Ridge, TN)

    1989-01-01

    An atmospheric sampling glow discharge ionization source that can be used in combination with an analytical instrument which operates at high vacuum, such as a mass spectrometer. The atmospheric sampling glow discharge ionization source comprises a chamber with at least one pair of electrodes disposed therein, an inlet for a gaseous sample to be analyzed and an outlet communicating with an analyzer which operates at subatmospheric pressure. The ionization chamber is maintained at a pressure below atmospheric pressure, and a voltage difference is applied across the electrodes to induce a glow discharge between the electrodes, so that molecules passing through the inlet are ionized by the glow discharge and directed into the analyzer. The ionization source accepts the sample under atmospheric pressure conditions and processes it directly into the high vacuum instrument, bridging the pressure gap and drawing off unwanted atmospheric gases. The invention also includes a method for analyzing a gaseous sample using the glow discharge ionization source described above.

  15. Is the negative glow plasma of a direct current glow discharge negatively charged?

    SciTech Connect (OSTI)

    Bogdanov, E. A.; Saifutdinov, A. I.; Demidov, V. I.; Kudryavtsev, A. A.

    2015-02-15

    A classic problem in gas discharge physics is discussed: what is the sign of charge density in the negative glow region of a glow discharge? It is shown that traditional interpretations in text-books on gas discharge physics that states a negative charge of the negative glow plasma are based on analogies with a simple one-dimensional model of discharge. Because the real glow discharges with a positive column are always two-dimensional, the transversal (radial) term in divergence with the electric field can provide a non-monotonic axial profile of charge density in the plasma, while maintaining a positive sign. The numerical calculation of glow discharge is presented, showing a positive space charge in the negative glow under conditions, where a one-dimensional model of the discharge would predict a negative space charge.

  16. Glow discharge plasma deposition of thin films

    DOE Patents [OSTI]

    Weakliem, Herbert A. (Pennington, NJ); Vossen, Jr., John L. (Bridgewater, NJ)

    1984-05-29

    A glow discharge plasma reactor for deposition of thin films from a reactive RF glow discharge is provided with a screen positioned between the walls of the chamber and the cathode to confine the glow discharge region to within the region defined by the screen and the cathode. A substrate for receiving deposition material from a reactive gas is positioned outside the screened region. The screen is electrically connected to the system ground to thereby serve as the anode of the system. The energy of the reactive gas species is reduced as they diffuse through the screen to the substrate. Reactive gas is conducted directly into the glow discharge region through a centrally positioned distribution head to reduce contamination effects otherwise caused by secondary reaction products and impurities deposited on the reactor walls.

  17. Handling and characterization of glow-discharge polymer samples...

    Office of Scientific and Technical Information (OSTI)

    of glow-discharge polymer samples for the light gas gun Citation Details In-Document Search Title: Handling and characterization of glow-discharge polymer samples for the light ...

  18. An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine

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

    Closed-loop Control | Department of Energy Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control Describes glow plug with integrated pressure sensor for closed-loop control of diesel engine combustion p-20_ramond.pdf (459.53 KB) More Documents & Publications Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines Diesel Combustion Control with

  19. Lead Research and Development Activity for DOE's High Temperature, Low Relative Humidity Membrane Program (Topic 2)

    SciTech Connect (OSTI)

    James Fenton, PhD; Darlene Slattery, PhD; Nahid Mohajeri, PhD

    2012-09-05

    The Department of Energy’s High Temperature, Low Relative Humidity Membrane Program was begun in 2006 with the Florida Solar Energy Center (FSEC) as the lead organization. During the first three years of the program, FSEC was tasked with developing non-Nafion® proton exchange membranes with improved conductivity for fuel cells. Additionally, FSEC was responsible for developing protocols for the measurement of in-plane conductivity, providing conductivity measurements for the other funded teams, developing a method for through-plane conductivity and organizing and holding semiannual meetings of the High Temperature Membrane Working Group (HTMWG). The FSEC membrane research focused on the development of supported poly[perfluorosulfonic acid] (PFSA) – Teflon membranes and a hydrocarbon membrane, sulfonated poly(ether ether ketone). The fourth generation of the PFSA membrane (designated FSEC-4) came close to, but did not meet, the Go/No-Go milestone of 0.1 S/cm at 50% relative humidity at 120 °C. In-plane conductivity of membranes provided by the funded teams was measured and reported to the teams and DOE. Late in the third year of the program, DOE used this data and other factors to decide upon the teams to continue in the program. The teams that continued provided promising membranes to FSEC for development of membrane electrode assemblies (MEAs) that could be tested in an operating fuel cell. FSEC worked closely with each team to provide customized support. A logic flow chart was developed and discussed before MEA fabrication or any testing began. Of the five teams supported, by the end of the project, membranes from two of the teams were easily manufactured into MEAs and successfully characterized for performance. One of these teams exceeded performance targets, while the other requires further optimization. An additional team developed a membrane that shows great promise for significantly reducing membrane costs and increasing membrane lifetime.

  20. COMPOSITION AND STRUCTURAL STUDIES OF STRONG GLOW DISCHARGE POLYMER COATINGS

    SciTech Connect (OSTI)

    CZECHOWICZ, DG; CASTILLO, ER; NIKROO, A

    2002-04-01

    OAK A271 COMPOSITION AND STRUCTURAL STUDIES OF STRONG GLOW DISCHARGE POLYMER COATINGS. An investigation of the chemical composition and structure of strong glow discharge (GDP) polymer shells made for cryogenic experiments at OMEGA is described. The investigation was carried out using combustion and Fourier Transform Infrared Spectroscopy (FTIR) analysis. The strongest coatings were observed to have the lowest hydrogen content or hydrogen/carbon H/C ratio, whereas the weakest coatings had the highest hydrogen content or H/C ratio. Chemical composition results from combustion were used to complement FTIR analysis to determine the relative hydrogen content of as-fabricated coatings. Good agreement was observed between composition results obtained from combustion and FTIR analysis. FTIR analysis of coating structures showed the strongest coatings to have less terminal methyl groups and a more double bond or olefinic structure. Strong GDP coatings that were aged in air react more with oxygen and moisture than standard GDP coatings. In addition to a more olefinic structure, there may also be more free-radial sites present in strong GDP coatings, which leads to greater oxygen uptake.

  1. Topical Committee | Department of Energy

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

    Topical Committee Topical Committee In the interest of optimum technology transfer, the DOE Technical Standards Program (TSP) has set up a network of topical committees. These committees provide a forum for communication across the DOE complex on technical standards related activities. If you would like information about a specific topical committee, or wish to join one of the groups, we've provided a roster of TSP Topical Committees and corresponding Topical Committee Chairpersons. Expectations

  2. The Use of DC Glow Discharges as Undergraduate Educational Tools

    Office of Scientific and Technical Information (OSTI)

    Sophia Gershman Advanced Research Innovation in Science ... to glow, but the gas becomes conductive at lower voltages. ... apparatuses varying in cost and footprint, but designed ...

  3. High explosives vapor detection by atmospheric sampling glow discharge ionization/tandem mass spectrometry

    SciTech Connect (OSTI)

    McLuckey, S.A.; Goeringer, D.E.; Asano, K.G.

    1996-02-01

    The combination of atmospheric sampling glow discharge ionization with tandem mass spectrometry for the detection of traces of high explosives is described. Particular emphasis is placed on use of the quadrupole ion trap as the type of tandem mass spectrometer. Atmospheric sampling glow discharge provides a simple, rugged, and efficient means for anion formation while the quadrupole ion trap provides for efficient tandem mass spectrometry. Mass selective ion accumulation and non-specific ion activation methods can be used to overcome deleterious effects arising from ion/ion interactions. Such interactions constitute the major potential technical barrier to the use of the ion trap for real-time monitoring of targeted compounds in uncontrolled and highly variable matrices. Tailored waveforms can be used to effect both mass selective ion accumulation and ion activation. Concatenated tailored waveforms allow for both functions in a single experiment thereby providing the capability for monitoring several targeted species simultaneously. The combination of atmospheric sampling glow discharge ionization with a state-of-the-art analytical quadrupole ion trap is a highly sensitive and specific detector for traces of high explosives. The combination is also small and inexpensive relative to virtually any other form of tandem mass spectrometry. The science and technology underlying the glow discharge/ion trap combination is sufficiently mature to form the basis for an engineering effort to make the detector portable. 85 refs.

  4. New Insight on a Familiar Glow | U.S. DOE Office of Science ...

    Office of Science (SC) Website

    Researchers discovered how green fluorescent proteins (center) react with water (shown around the edges of the protein). The water stabilizes the protein's glow. The green glow ...

  5. Trace elements in coal by glow discharge mass spectrometry

    SciTech Connect (OSTI)

    Jacobs, M.L.; Wilson, C.R.; Pestovich, J. Jr.

    1995-08-01

    A need and a demand exist for determining trace elements in coal and coal related by-products, especially those elements which may potentially be a health hazard. The provisions of the 1990 clean air act require that the EPA evaluate the emissions of electric utilities for trace elements and other potentially hazardous organic compounds. The coal fired electric utility industry supplies roughly 60% of the total generating capacity of 2,882,525 million kilowatt hours (nearly 3 trillion kilowatt hours) generated in the U.S. This is accomplished by 414 power plants scattered across the country that burned 813,508,000 short tons of coal in 1993. The relative volatility of some inorganic constituents in coal makes them more prone to be emitted to the atmosphere following combustion. The production of analytical data for trace elements is known to be a difficult task in coal and by-products of coal combustion (fly ash, bottom ash, gas streams, etc.), in terms of both sample collection and analytical determinations. There are several common analytical methods available to the analyst to determine trace elements in coal and coal by-products. In general analytical germs, the material to be analyzed can be totally solubilized (or extracted), or the elements analytes can be determined in the material as a solid. A relatively new elemental technique, Glow Discharge Mass Spectrometry (GDMS) can be used with solids as well. This new analytical technique had never before been applied directly to coal. The radio frequency-glow discharge quadropole mass spectrometer was used to analyze coal directly for the first time ever by rf-GDMS. The rf-GDMS technique is described.

  6. Glow discharge based device for solving mazes

    SciTech Connect (OSTI)

    Dubinov, Alexander E. Mironenko, Maxim S.; Selemir, Victor D.; Maksimov, Artem N.; Pylayev, Nikolay A.

    2014-09-15

    A glow discharge based device for solving mazes has been designed and tested. The device consists of a gas discharge chamber and maze-transformer of radial-azimuth type. It allows changing of the maze pattern in a short period of time (within several minutes). The device has been tested with low pressure air. Once switched on, a glow discharge has been shown to find the shortest way through the maze from the very first attempt, even if there is a section with potential barrier for electrons on the way. It has been found that ionization waves (striations) can be excited in the maze along the length of the plasma channel. The dependancy of discharge voltage on the length of the optimal path through the maze has been measured. A reduction in discharge voltage with one or two potential barriers present has been found and explained. The dependency of the magnitude of discharge ignition voltage on the length of the optimal path through the maze has been measured. The reduction of the ignition voltage with the presence of one or two potential barriers has been observed and explained.

  7. Phenomena of oscillations in atmospheric pressure direct current glow discharges

    SciTech Connect (OSTI)

    Liu, Fu-cheng; Yan, Wen; Wang, De-zhen

    2013-12-15

    Self-sustained oscillations in a dc glow discharge with a semiconductor layer at atmospheric pressure were investigated by means of a one-dimensional fluid model. It is found that the dc glow discharge initially becomes unstable in the subnormal glow region and gives rise to oscillations of plasma parameters. A variety of oscillations with one or more frequencies have been observed under different conditions. The discharge oscillates between the glow discharge mode and the Townsend discharge mode in the oscillations with large amplitude while operates in the subnormal glow discharge mode all the while in the oscillations with small amplitude. Fourier Transform spectra of oscillations reveal the transition mechanism between different oscillations. The effects of semiconductor conductivity on the oscillation frequency of the dominant mode, gas voltage, as well as the discharge current have also been analyzed.

  8. Topic Committee

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

    RAP Work Plan Topics Page 1 of 3 Topic Committee Potential FY 2016 Action/Product Context (from FY 2016 HAB Work Plan) 6-Month Status (IM, Committee, Advice, Deferred, No Action) 1. 100 Area retrieval process, K Basin RAP Project update (May not be ready until 2017 for an update; work ready in 2018 per milestone)  Attended tour in October 2015, including visit to MO-500/Sludge Annex facility 2. 100 D/H Proposed Plan RAP Project update Cleanup of soils and groundwater at D/H. Are the proposed

  9. Handling and characterization of glow-discharge polymer samples...

    Office of Scientific and Technical Information (OSTI)

    for the light gas gun Citation Details In-Document Search Title: Handling and characterization of glow-discharge polymer samples for the light gas gun Authors: Akin, M C ; ...

  10. Examination of interior surfaces using glow-discharge illumination

    DOE Patents [OSTI]

    Lord, David E.; Petrini, Richard R.; Carter, Gary W.

    1978-01-01

    Endoscopic examination of the interior of a hollow structure through a light pipe that is inserted into the structure, the interior being illuminated by means of a glow discharge that is established with a high voltage applied between the structure wall as one electrode and a second electrode that is inserted into the structure, or establishing the glow with two electrodes inserted into the structure.

  11. Extension of spatiotemporal chaos in glow discharge-semiconductor systems

    SciTech Connect (OSTI)

    Akhmet, Marat Fen, Mehmet Onur; Rafatov, Ismail

    2014-12-15

    Generation of chaos in response systems is discovered numerically through specially designed unidirectional coupling of two glow discharge-semiconductor systems. By utilizing the auxiliary system approach, [H. D. I. Abarbanel, N. F. Rulkov, and M. M. Sushchik, Phys. Rev. E 53, 45284535 (1996)] it is verified that the phenomenon is not a chaos synchronization. Simulations demonstrate various aspects of the chaos appearance in both drive and response systems. Chaotic control is through the external circuit equation and governs the electrical potential on the boundary. The expandability of the theory to collectives of glow discharge systems is discussed, and this increases the potential of applications of the results. Moreover, the research completes the previous discussion of the chaos appearance in a glow discharge-semiconductor system [D. D. ija?i? U. Ebert, and I. Rafatov, Phys. Rev. E 70, 056220 (2004).].

  12. Radio-frequency powered glow discharge device and method with high voltage interface

    DOE Patents [OSTI]

    Duckworth, D.C.; Marcus, R.K.; Donohue, D.L.; Lewis, T.A.

    1994-06-28

    A high voltage accelerating potential, which is supplied by a high voltage direct current power supply, is applied to the electrically conducting interior wall of an RF powered glow discharge cell. The RF power supply desirably is electrically grounded, and the conductor carrying the RF power to the sample held by the probe is desirably shielded completely excepting only the conductor's terminal point of contact with the sample. The high voltage DC accelerating potential is not supplied to the sample. A high voltage capacitance is electrically connected in series between the sample on the one hand and the RF power supply and an impedance matching network on the other hand. The high voltage capacitance isolates the high DC voltage from the RF electronics, while the RF potential is passed across the high voltage capacitance to the plasma. An inductor protects at least the RF power supply, and desirably the impedance matching network as well, from a short that might occur across the high voltage capacitance. The discharge cell and the probe which holds the sample are configured and disposed to prevent the probe's components, which are maintained at ground potential, from bridging between the relatively low vacuum region in communication with the glow discharge maintained within the cell on the one hand, and the relatively high vacuum region surrounding the probe and cell on the other hand. The probe and cell also are configured and disposed to prevent the probe's components from electrically shorting the cell's components. 11 figures.

  13. Radio-frequency powered glow discharge device and method with high voltage interface

    DOE Patents [OSTI]

    Duckworth, Douglas C.; Marcus, R. Kenneth; Donohue, David L.; Lewis, Trousdale A.

    1994-01-01

    A high voltage accelerating potential, which is supplied by a high voltage direct current power supply, is applied to the electrically conducting interior wall of an RF powered glow discharge cell. The RF power supply desirably is electrically grounded, and the conductor carrying the RF power to the sample held by the probe is desirably shielded completely excepting only the conductor's terminal point of contact with the sample. The high voltage DC accelerating potential is not supplied to the sample. A high voltage capacitance is electrically connected in series between the sample on the one hand and the RF power supply and an impedance matching network on the other hand. The high voltage capacitance isolates the high DC voltage from the RF electronics, while the RF potential is passed across the high voltage capacitance to the plasma. An inductor protects at least the RF power supply, and desirably the impedance matching network as well, from a short that might occur across the high voltage capacitance. The discharge cell and the probe which holds the sample are configured and disposed to prevent the probe's components, which are maintained at ground potential, from bridging between the relatively low vacuum region in communication with the glow discharge maintained within the cell on the one hand, and the relatively high vacuum region surrounding the probe and cell on the other hand. The probe and cell also are configured and disposed to prevent the probe's components from electrically shorting the cell's components.

  14. Sensitive glow discharge ion source for aerosol and gas analysis

    DOE Patents [OSTI]

    Reilly, Peter T. A. (Knoxville, TN)

    2007-08-14

    A high sensitivity glow discharge ion source system for analyzing particles includes an aerodynamic lens having a plurality of constrictions for receiving an aerosol including at least one analyte particle in a carrier gas and focusing the analyte particles into a collimated particle beam. A separator separates the carrier gas from the analyte particle beam, wherein the analyte particle beam or vapors derived from the analyte particle beam are selectively transmitted out of from the separator. A glow discharge ionization source includes a discharge chamber having an entrance orifice for receiving the analyte particle beam or analyte vapors, and a target electrode and discharge electrode therein. An electric field applied between the target electrode and discharge electrode generates an analyte ion stream from the analyte vapors, which is directed out of the discharge chamber through an exit orifice, such as to a mass spectrometer. High analyte sensitivity is obtained by pumping the discharge chamber exclusively through the exit orifice and the entrance orifice.

  15. Influences of impedance matching network on pulse-modulated radio frequency atmospheric pressure glow discharges

    SciTech Connect (OSTI)

    Huo, W. G. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China); School of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029 (China); Xu, K.; Sun, B.; Ding, Z. F. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China)

    2012-08-15

    Pulse-modulated RF atmospheric pressure glow discharges (APDGs) were investigated in recent years to reduce the thermal accumulation and extend the operation region of the stable alpha glow mode. Different pulse-modulated voltage and current waveforms were acquired in previous experiments, but no attention was paid to the interpretation. We investigated this issue and associated phenomenon via positive and negative feedback effects derived from varying the series capacitor in the inversely L-shaped matching network used in our pulse-modulated RF APGD source. The evolutions of pulse-modulated RF waveforms were found to be associated with the feedback region and the pulsed plasma absorbed RF power. In the positive feedback region, pulse-modulated RF APGDs are relatively stable. In the negative feedback region, wide spikes as well as undershoots occur in RF voltage and current waveforms and the plasma absorbed RF power. In case of a high RF power discharge with a low modulation frequency, the pulse-modulated RF APGD is extinguished and re-ignited due to the enhanced undershoot during the initial pulse phase. The pulse-modulated RF APGD can transit from positive to negative feedback region in a range of series capacitance. Experimental results are discussed by the aid of equivalent circuit, negative and positive feedback effects.

  16. Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines |

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

    Department of Energy Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines Glow Plug Integrated Piezo-Ceramic Combustion Sensor for Diesel Engines 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_troy.pdf (464.48 KB) More Documents & Publications An Innovative Pressure Sensor Glow Plug Offers Improved Diesel Engine Closed-loop Control Vehicle Technologies Office: 2013 Propulsion Materials R&D Annual Progress Report

  17. Binary and ternary gas mixtures for use in glow discharge closing...

    Office of Scientific and Technical Information (OSTI)

    Highly efficient binary and ternary gas mixtures for use in diffuse glow discharge closing ... discharge; closing; switches; highly; efficient; binary; ternary; gas; mixtures; ...

  18. OSTIblog Articles in the greenhouse gases Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    greenhouse gases Topic Carbon Sequestration - Helping to Save Our Beautiful World by Kathy ... Related Topics: carbon dioxide, carbon sequestration, climate change, greenhouse gases

  19. Reproducing continuous radio blackout using glow discharge plasma

    SciTech Connect (OSTI)

    Xie, Kai; Li, Xiaoping; Liu, Donglin; Shao, Mingxu [School of Aerospace Science and Technology, Xidian University, Xi'an 710071 (China)] [School of Aerospace Science and Technology, Xidian University, Xi'an 710071 (China); Zhang, Hanlu [School of Communication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121 (China)] [School of Communication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121 (China)

    2013-10-15

    A novel plasma generator is described that offers large-scale, continuous, non-magnetized plasma with a 30-cm-diameter hollow structure, which provides a path for an electromagnetic wave. The plasma is excited by a low-pressure glow discharge, with varying electron densities ranging from 10{sup 9} to 2.5 10{sup 11} cm{sup ?3}. An electromagnetic wave propagation experiment reproduced a continuous radio blackout in UHF-, L-, and S-bands. The results are consistent with theoretical expectations. The proposed method is suitable in simulating a plasma sheath, and in researching communications, navigation, electromagnetic mitigations, and antenna compensation in plasma sheaths.

  20. LANL Transfers Glowing Bio Technology to Sandia Biotech

    ScienceCinema (OSTI)

    Rorick, Kevin

    2012-08-02

    Partnering with Los Alamos National Laboratory, an Albuquerque-based company is seeking to transform the way protein and peptide analysis is conducted around the world. Sandia Biotech is using a biological technology licensed from Los Alamos called split green fluorescent protein (sGFP), as a detecting and tracking tool for the protein and peptide industry, valuable in the fields of Alzheimer's research, drug development and other biotechnology fields using protein folding to understand protein expression and mechanisms of action. http://www.lanl.gov/news/stories/glowing-future-for-los-alamos-and-sandia-b iotech-partnership.html

  1. Dual-frequency glow discharges in atmospheric helium

    SciTech Connect (OSTI)

    Huang, Xiaojiang; Guo, Ying; Dai, Lu; Zhang, Jing; Shi, J. J.

    2015-10-15

    In this paper, the dual-frequency (DF) glow discharges in atmospheric helium were experimented by electrical and optical measurements in terms of current voltage characteristics and optical emission intensity. It is shown that the waveforms of applied voltages or discharge currents are the results of low frequency (LF) waveforms added to high frequency (HF) waveforms. The HF mainly influences discharge currents, and the LF mainly influences applied voltages. The gas temperatures of DF discharges are mainly affected by HF power rather than LF power.

  2. LANL Transfers Glowing Bio Technology to Sandia Biotech

    SciTech Connect (OSTI)

    Rorick, Kevin

    2012-01-01

    Partnering with Los Alamos National Laboratory, an Albuquerque-based company is seeking to transform the way protein and peptide analysis is conducted around the world. Sandia Biotech is using a biological technology licensed from Los Alamos called split green fluorescent protein (sGFP), as a detecting and tracking tool for the protein and peptide industry, valuable in the fields of Alzheimer's research, drug development and other biotechnology fields using protein folding to understand protein expression and mechanisms of action. http://www.lanl.gov/news/stories/glowing-future-for-los-alamos-and-sandia-b iotech-partnership.html

  3. OSTIblog Articles in the OSTI collections Topic | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information collections Topic Plasmas - The Greatest Show on Earth by Kathy Chambers 24 Jun, 2013 in Products and Content Perhaps the most beautiful and eerie displays of light in our sky are a phenomenon known as the auroras. This natural glow of light in the sky in high latitude regions usually displays ribbons of colors from a fluorescent green to brilliant purple to a vivid crimson somewhat like an unexpected beautiful sunrise or sunset. Observers often

  4. OSTIblog Articles in the William Watson Topic | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information William Watson Topic Plasmas - The Greatest Show on Earth by Kathy Chambers 24 Jun, 2013 in Products and Content Perhaps the most beautiful and eerie displays of light in our sky are a phenomenon known as the auroras. This natural glow of light in the sky in high latitude regions usually displays ribbons of colors from a fluorescent green to brilliant purple to a vivid crimson somewhat like an unexpected beautiful sunrise or sunset. Observers

  5. OSTIblog Articles in the geomagnetic storms Topic | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information geomagnetic storms Topic Plasmas - The Greatest Show on Earth by Kathy Chambers 24 Jun, 2013 in Products and Content Perhaps the most beautiful and eerie displays of light in our sky are a phenomenon known as the auroras. This natural glow of light in the sky in high latitude regions usually displays ribbons of colors from a fluorescent green to brilliant purple to a vivid crimson somewhat like an unexpected beautiful sunrise or sunset.

  6. OSTIblog Articles in the microwave thrusters Topic | OSTI, US Dept of

    Office of Scientific and Technical Information (OSTI)

    Energy Office of Scientific and Technical Information microwave thrusters Topic Plasmas - The Greatest Show on Earth by Kathy Chambers 24 Jun, 2013 in Products and Content Perhaps the most beautiful and eerie displays of light in our sky are a phenomenon known as the auroras. This natural glow of light in the sky in high latitude regions usually displays ribbons of colors from a fluorescent green to brilliant purple to a vivid crimson somewhat like an unexpected beautiful sunrise or sunset.

  7. OSTIblog Articles in the nanomaterials Topic | OSTI, US Dept of Energy

    Office of Scientific and Technical Information (OSTI)

    Office of Scientific and Technical Information nanomaterials Topic Plasmas - The Greatest Show on Earth by Kathy Chambers 24 Jun, 2013 in Products and Content Perhaps the most beautiful and eerie displays of light in our sky are a phenomenon known as the auroras. This natural glow of light in the sky in high latitude regions usually displays ribbons of colors from a fluorescent green to brilliant purple to a vivid crimson somewhat like an unexpected beautiful sunrise or sunset. Observers

  8. OSTIblog Articles in the spaceship propulsion Topic | OSTI, US Dept of

    Office of Scientific and Technical Information (OSTI)

    Energy Office of Scientific and Technical Information spaceship propulsion Topic Plasmas - The Greatest Show on Earth by Kathy Chambers 24 Jun, 2013 in Products and Content Perhaps the most beautiful and eerie displays of light in our sky are a phenomenon known as the auroras. This natural glow of light in the sky in high latitude regions usually displays ribbons of colors from a fluorescent green to brilliant purple to a vivid crimson somewhat like an unexpected beautiful sunrise or sunset.

  9. TEC Communications Topic Group

    Office of Environmental Management (EM)

    procurement - Routing criteriaemergency preparedness Tribal Issues Topic Group * TEPP Navajo Nation (Tom Clawson) - 1404 - Needs Assessment * Identified strengths and...

  10. Non-local Effects in a Stratified Glow Discharge With Dusty Particles

    SciTech Connect (OSTI)

    Sukhinin, G. I.; Fedoseev, A. V.; Ramazanov, T. S.; Amangaliyeva, R. Zh.; Dosbolayev, M. K.; Jumabekov, A. N.

    2008-09-07

    The work is aimed to describe non-local effects in the positive column of a low pressure stratified DC glow discharge in argon with dusty particles in a vertical cylindrical discharge tube. The numerical calculations of plasma parameters in the axis of the discharge tube were performed with the help of hybrid model based on the solution of non-local Boltzmann equation for EEDF. Distributions of optical emission from striations were measured experimentally. It is shown that in a stratified positive column the EEDF is not Maxwellian and even non-monotonous. Also, the effect of displacing of optical emission distribution relative to the electric field is shown both by numerical simulation and experimental measurements.

  11. TEC Communications Topic Group

    Office of Environmental Management (EM)

    Tribal Issues Topic Group Judith Holm, Chair April 21, 2004 Albuquerque, NM Tribal Issues Topic Group * February Tribal Summit with Secretary of Energy (Kristen Ellis, CI) - Held in conjunction with NCAI mid-year conference - First Summit held in response to DOE Indian Policy - Addressed barriers to communication and developing framework for interaction Tribal Issues Topic Group * Summit (continued) - Federal Register Notice published in March soliciting input on how to improve summit process

  12. Flush-mounted probe diagnostics for argon glow discharge plasma

    SciTech Connect (OSTI)

    Xu, Liang Cao, Jinxiang; Liu, Yu; Wang, Jian; Du, Yinchang; Zheng, Zhe; Zhang, Xiao; Wang, Pi; Zhang, Jin; Li, Xiao; Qin, Yongqiang; Zhao, Liang

    2014-09-15

    A comparison is made between plasma parameters measured by a flush-mounted probe (FP) and a cylindrical probe (CP) in argon glow discharge plasma. Parameters compared include the space potential, the plasma density, and the effective electron temperature. It is found that the ion density determined by the FP agrees well with the electron density determined by the CP in the quasi-neutral plasma to better than 10%. Moreover, the space potential and effective electron temperature calculated from electron energy distribution function measured by the FP is consistent with that measured by the CP over the operated discharge current and pressure ranges. These results present the FP can be used as a reliable diagnostic tool in the stable laboratory plasma and also be anticipated to be applied in other complicated plasmas, such as tokamaks, the region of boundary-layer, and so on.

  13. Mass dependency of turbulent parameters in stationary glow discharge plasmas

    SciTech Connect (OSTI)

    Titus, J. B.; Alexander, A. B.; Wiggins, D. L.; Johnson, J. A. III

    2013-05-15

    A direct current glow discharge tube is used to determine how mass changes the effects of certain turbulence characteristics in a weakly ionized gas. Helium, neon, argon, and krypton plasmas were created, and an axial magnetic field, varied from 0.0 to 550.0 Gauss, was used to enhance mass dependent properties of turbulence. From the power spectra of light emission variations associated with velocity fluctuations, determination of mass dependency on turbulent characteristic unstable modes, energy associated with turbulence, and the rate at which energy is transferred from scale to scale are measured. The magnetic field strength is found to be too weak to overcome particle diffusion to the walls to affect the turbulence in all four types of plasmas, though mass dependency is still detected. Though the total energy and the rate at which the energy moves between scales are mass invariant, the amplitude of the instability modes that characterize each plasma are dependent on mass.

  14. Evolution of a vortex in glow discharge plasma

    SciTech Connect (OSTI)

    Soukhomlinov, V.S.; Sheverev, V.A.; Oetuegen, M.V.

    2005-05-01

    The evolution of a vortex in glow discharge plasma is studied analytically. Specifically, the mechanism of local energy deposition into the flow by the plasma is considered and its effect on the structure of an inviscid vortex is analyzed. The vortex is modeled by a set of Euler's equations while the energy transferred by the plasma into the gas is represented by Rayleigh mechanism. In this mechanism, the amount of heat addition is a function of local gas density. The analysis indicates that the plasma can have a considerable effect on the structure of a vortex. The inviscid calculations show that in a uniform discharge, a 1 cm vortex dies out in a fraction of a second.

  15. UNIRIB: Physics Topics

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

    Physics Topics Research Capitalizing on the strengths of nine collaborating research ... Ion Beam (UNIRIB) consortium is conducting research at the forefront of nuclear physics. ...

  16. Plasma stability control using dielectric barriers in radio-frequency atmospheric pressure glow discharges

    SciTech Connect (OSTI)

    Shi, J. J.; Liu, D. W.; Kong, M. G.

    2006-08-21

    It is widely accepted that electrode insulation is unnecessary for generating radio-frequency (rf) atmospheric pressure glow discharges (APGDs). It is also known that rf APGDs with large discharge current are susceptible to the glow-to-arc transition. In this letter, a computational study is presented to demonstrate that dielectric barriers provide an effective control over unlimited current growth and allow rf APGDs to be operated at very high current densities with little danger of the glow-to-arc transition. Characteristics of electrode sheaths are used to show that the stability control is achieved by forcing the plasma-containing electrode unit to acquire positive differential conductivity.

  17. Note: Rapid reduction of graphene oxide paper by glow discharge plasma

    SciTech Connect (OSTI)

    Bo, Zheng; Qian, Jiajing; Duan, Liangping; Qiu, Kunzan Yan, Jianhua; Cen, Kefa; Han, Zhao Jun; Ostrikov, Kostya

    2015-05-15

    This note reports on a novel method for the rapid reduction of graphene oxide (GO) paper using a glow discharge plasma reactor. Glow discharge is produced and sustained between two parallel-plate graphite electrodes at a pressure of 240 mTorr. By exposing GO paper at the junction of negative-glow and Faraday-dark area for 4 min, the oxygen-containing groups can be effectively removed (C/O ratio increases from 2.6 to 7.9), while the material integrality and flexibility are kept well. Electrochemical measurements demonstrate that the as-obtained reduced GO paper can be potentially used for supercapacitor application.

  18. Dynamics of multiple double layers in high pressure glow discharge in a simple torus

    SciTech Connect (OSTI)

    Kumar Paul, Manash, E-mail: manashkr@gmail.com [Department of Physics, National Institute of Technology Agartala, Tripura799 046 (India); Sharma, P. K.; Thakur, A.; Kulkarni, S. V.; Bora, D. [Institute for Plasma Research, Bhat, Gandhinagar, Gujarat382 428 (India)

    2014-06-15

    Parametric characterization of multiple double layers is done during high pressure glow discharge in a toroidal vessel of small aspect ratio. Although glow discharge (without magnetic field) is known to be independent of device geometry, but the toroidal boundary conditions are conducive to plasma growth and eventually the plasma occupy the toroidal volume partially. At higher anode potential, the visibly glowing spots on the body of spatially extended anode transform into multiple intensely luminous spherical plasma blob structures attached to the tip of the positive electrode. Dynamics of multiple double layers are observed in argon glow discharge plasma in presence of toroidal magnetic field. The radial profiles of plasma parameters measured at various toroidal locations show signatures of double layer formation in our system. Parametric dependence of double layer dynamics in presence of toroidal magnetic field is presented here.

  19. TEC Working Group Topic Groups Archives | Department of Energy

    Office of Environmental Management (EM)

    Archives TEC Working Group Topic Groups Archives The following Topic Groups are no longer active; however, related documents and notes for these archived Topic Groups are available through the following links: Communications Consolidated Grant Topic Group Training - Medical Training Protocols Route Identification Process Mechanics of Funding and Technical Assistance

  20. Binary and ternary gas mixtures for use in glow discharge closing switches

    DOE Patents [OSTI]

    Hunter, Scott R.; Christophorou, Loucas G.

    1990-01-01

    Highly efficient binary and ternary gas mixtures for use in diffuse glow discharge closing switches are disclosed. The binary mixtures are combinations of helium or neon and selected perfluorides. The ternary mixtures are combinations of helium, neon, or argon, a selected perfluoride, and a small amount of gas that exhibits enhanced ionization characteristics. These mixtures are shown to be the optimum choices for use in diffuse glow discharge closing switches by virtue of the combined physio-electric properties of the mixture components.

  1. OSTIblog Articles in the Strategic Plan Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    and nuclear challenges through transformative science and technology solutions. The... Related Topics: clean energy, nuclear security, Science Accelerator, Strategic Plan

  2. Presentation: QER Energy Topics

    Office of Energy Efficiency and Renewable Energy (EERE)

    A briefing to the Secretary's Energy Advisory Board on QER Energy Topics (Energy Flows, Water Flows, and Program for Climate Model Diagnosis and Intercomparison) prepared by: A.J. Simon, Lawrence Livermore National Laboratory

  3. ARM - Topic List

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

    TeachersTopic List Outreach Home Room News Publications Traditional Knowledge Kiosks Barrow, Alaska Tropical Western Pacific Site Tours Contacts Students Study Hall About ARM Global Warming FAQ Just for Fun Meet our Friends Cool Sites Teachers Teachers' Toolbox Lesson Plans Topic List Atmosphere Atmospheric Heat Budget Atmospheric Pressure Composition of the Atmosphere Evolution of the Atmosphere Mesosphere Stratosphere Thermosphere Troposphere Oceans Oceans Sea Surface and Sea Level Weather and

  4. OSTIblog Articles in the slac Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: archimedes, multimedia, new media, slac Read more... Recording Science: ... he probably could have if given... Related Topics: archimedes, multimedia, new media, slac

  5. TEC Working Group Topic Groups | Department of Energy

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

    Topic Groups TEC Working Group Topic Groups TEC Topic Groups were formed in 1991 following an evaluation of the TEC program. Interested members, DOE and other federal agency staff meet to examine specific issues related to radioactive materials transportation. TEC Topic Groups enable a small number of participants to focus intensively on key issues at a level of detail that is unattainable during the TEC semiannual meetings due to time and group size constraints. Topic Groups meet individually

  6. Ambient-atmosphere glow discharge for determination of elemental concentration in solutions in a high-throughput or transient fashion

    DOE Patents [OSTI]

    Webb, Michael R.; Hieftje, Gary M.; Andrade, Francisco

    2011-04-19

    An ambient atmosphere glow discharge spectrometer is disclosed having a capillary, two electrodes and a means for recording the atomic emissions.

  7. Focus Group Meeting (Topical Meeting)

    Office of Energy Efficiency and Renewable Energy (EERE)

    Topical Meeting - Training Meeting agenda, summary and information package Meeting Date: April 30, 2008

  8. OSTIblog Articles in the ambient-gas Topic | OSTI, US Dept of Energy Office

    Office of Scientific and Technical Information (OSTI)

    of Scientific and Technical Information ambient-gas Topic Plasmas - The Greatest Show on Earth by Kathy Chambers 24 Jun, 2013 in Products and Content Perhaps the most beautiful and eerie displays of light in our sky are a phenomenon known as the auroras. This natural glow of light in the sky in high latitude regions usually displays ribbons of colors from a fluorescent green to brilliant purple to a vivid crimson somewhat like an unexpected beautiful sunrise or sunset. Observers often call

  9. OSTIblog Articles in the auroras Topic | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information auroras Topic Plasmas - The Greatest Show on Earth by Kathy Chambers 24 Jun, 2013 in Products and Content Perhaps the most beautiful and eerie displays of light in our sky are a phenomenon known as the auroras. This natural glow of light in the sky in high latitude regions usually displays ribbons of colors from a fluorescent green to brilliant purple to a vivid crimson somewhat like an unexpected beautiful sunrise or sunset. Observers often call it the

  10. OSTIblog Articles in the plasma Topic | OSTI, US Dept of Energy Office of

    Office of Scientific and Technical Information (OSTI)

    Scientific and Technical Information plasma Topic Plasmas - The Greatest Show on Earth by Kathy Chambers 24 Jun, 2013 in Products and Content Perhaps the most beautiful and eerie displays of light in our sky are a phenomenon known as the auroras. This natural glow of light in the sky in high latitude regions usually displays ribbons of colors from a fluorescent green to brilliant purple to a vivid crimson somewhat like an unexpected beautiful sunrise or sunset. Observers often call it the

  11. Binary and ternary gas mixtures with temperature enhanced diffuse glow discharge characteristics for use in closing switches

    DOE Patents [OSTI]

    Christophorou, L.G.; Hunter, S.R.

    1988-06-28

    An improvement to the gas mixture used in diffuse glow discharge closing switches is disclosed which includes binary and ternary gas mixtures which are formulated to exhibit decreasing electron attachment with increasing temperature. This increases the efficiency of the conductance of the glow discharge and further inhibits the formation of an arc. 11 figs.

  12. Binary and ternary gas mixtures with temperature enhanced diffuse glow discharge characteristics for use in closing switches

    DOE Patents [OSTI]

    Christophorou, Loucas G. (Oak Ridge, TN); Hunter, Scott R. (Oak Ridge, TN)

    1990-01-01

    An improvement to the gas mixture used in diffuse glow discharge closing switches is disclosed which includes binary and ternary gas mixtures which are formulated to exhibit decreasing electron attachment with increasing temperature. This increases the efficiency of the conductance of the glow discharge and further inhibits the formation of an arc.

  13. Binary and ternary gas mixtures with temperature enhanced diffuse glow discharge characteristics for use in closing switches

    DOE Patents [OSTI]

    Christophorou, L.G.; Hunter, S.R.

    1990-06-26

    An improvement to the gas mixture used in diffuse glow discharge closing switches is disclosed which includes binary and ternary gas mixtures which are formulated to exhibit decreasing electron attachment with increasing temperature. This increases the efficiency of the conductance of the glow discharge and further inhibits the formation of an arc. 11 figs.

  14. Featured Topic Pages

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

    Featured Topic Pages * Renowned scientists, with information about the scientists' R&D results * Significant DOE research disciplines, with R&D results * Manhattan Project, including scientists and key events Laureates * Nobel Prize winners associated with DOE and predecessor agencies * Winners of the Enrico Fermi Award, a U.S. Presidential award Database * Selected documents about noteworthy R&D results * Documents and individual pages searchable by word or phrase * Tag cloud

  15. Manufacturing Innovation Topics Workshop

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Advanced Manufacturing Office (AMO) and the Office of the Secretary of Defense Manufacturing Technology Program (OSD ManTech) will host a workshop to discuss AMO's recent Request for Information (RFI) on Clean Energy Manufacturing Topic Areas as well as the recent areas of interest announced by OSD ManTech for a new Manufacturing Innovation Institute on October 8-9, 2014 in Fort Worth, TX.

  16. Detrapping of tungsten nanoparticles in a direct-current argon glow discharge

    SciTech Connect (OSTI)

    Coudel, L. Kumar, K. Kishor; Arnas, C.

    2014-12-15

    Nanoparticles are grown from the sputtering of a tungsten cathode in a direct current argon glow discharge. Laser light scattering of a vertical laser sheet going through the plasma reveals that the dust particle cloud is compressed and pushed towards the anode during the discharge. Scanning electron microscopy images of substrates exposed to the plasma for given durations show that dust particles are continuously falling down on the anode during the discharge. These observations are explained by the fact that the electrostatic force at the negative glow-anode sheath boundary cannot balance the ion drag, gravity, and thermophoresis forces for particles of more than a few tens of nanometres in diameter.

  17. Binary and ternary gas mixtures for use in glow discharge closing switches

    DOE Patents [OSTI]

    Hunter, S.R.; Christophorou, L.G.

    1988-04-27

    Highly efficient binary and ternary gas mixtures for use in diffuse glow discharge closing switches are disclosed. The binary mixtures are combinations of helium or neon and selected perfluorides. The ternary mixtures are combinations of helium, neon, or argon, a selected perfluoride, and a small amount of gas that exhibits enhanced ionization characteristics. These mixtures are shown to be the optimum choices for use in diffuse glow discharge closing switches by virtue if the combines physio-electric properties of the mixture components. 9 figs.

  18. OSTIblog Articles in the research-results Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    research-results Topic DOE R&D Accomplishments Brings You More by Mary Schorn 19 Jan, ... and predecessors,... Related Topics: DOE Research & Development (R&D) Accomplishments, ...

  19. TEC Working Group Topic Groups Archives Consolidated Grant Topic Group |

    Office of Environmental Management (EM)

    Department of Energy Consolidated Grant Topic Group TEC Working Group Topic Groups Archives Consolidated Grant Topic Group The Consolidated Grant Topic Group arose from recommendations provided by the TEC and other external parties to the DOE Senior Executive Transportation Forum in July 1998. It was proposed that the consolidation of multiple funding streams from numerous DOE sources into a single grant would provide a more equitable and efficient means of assistance to States and Tribes

  20. Simulation Study of an Extended Density DC Glow Toroidal Plasma Source

    SciTech Connect (OSTI)

    Granda-Gutierrez, E. E.; Piedad-Beneitez, A. de la; Lopez-Callejas, R.; Godoy-Cabrera, O. G.; Benitez-Read, J. S.; Pacheco-Sotelo, J. O.; Pena-Eguiluz, R.; Mercado-Cabrera, A.; Valencia A, R.; Barocio, S. R.

    2006-12-04

    Conventional wisdom assigns the DC glow discharge regime to plasma currents below {approx}500 mA values, beyond which the discharge falls into the anomalous glow and the turbulent arc regimes. However, we have found evidence that, during toroidal discharges, this barrier can be ostensibly extended up to 800 mA. Thus, a computer simulation has been applied to the evolution of the main electrical characteristics of such a glow discharge plasma in a toroidal vessel in order to design and construct a respective voltage/current controlled source. This should be able to generate a DC plasma in the glow regime with which currents in the range 10-3-100 A can be experimented and 109-1010 cm-3 plasma densities can be achieved to PIII optimization purposes. The plasma is modelled as a voltage-controlled current source able to be turned on whenever the breakdown voltage is reached across the gap between the anode and the vessel wall. The simulation outcome fits well our experimental measurements showing that the plasma current obeys power laws that are dependent on the power current and other control variables such as the gas pressure.

  1. ULTRAVIOLET INDUCED MOTION OF A FLUORESCENT DUST CLOUD IN AN ARGON DIRECT CURRENT GLOW DISCHARGE PLASMA

    SciTech Connect (OSTI)

    Hvasta, M.G.; and Zwicker, A.

    2008-01-01

    Dusty plasmas consist of electrons, ions, neutrals and nm-?m sized particles commonly referred to as dust. In man-made plasmas this dust may represent impurities in a tokamak or plasma etching processing. In astrophysical plasmas this dust forms structures such as planetary rings and comet tails. To study dusty plasma dynamics an experiment was designed in which a 3:1 silica (<5 ?m diameter) and fl uorescent dust mixture was added to an argon DC glow discharge plasma and exposed to UV radiation. This fl uorescent lighting technique offers an advantage over laser scattering (which only allows two-dimensional slices of the cloud to be observed) and is simpler than scanning mirror techniques or particle image velocimetry. Under typical parameters (P=150 mTorr, V anode= 100 V, Vcathode= -400 V, Itotal < 2mA) when the cloud is exposed to the UV light (100W, ? = 365 nm) the mixture fl uoresces, moves ~2mm towards the light source and begins rotating in a clockwise manner (as seen from the cathode). By calibrating a UV lamp and adjusting the relative intensity of the UV with a variable transformer it was found that both translational and rotational velocities are a function of UV intensity. Additionally, it was determined that bulk cloud rotation is not seen when the dust tray is not grounded while bulk translation is. This ongoing experiment represents a novel way to control contamination in man-made plasmas and a path to a better understanding of UV-bathed plasma systems in space..

  2. TECHNICAL STANDARDS PROGRAM TOPICAL COMMITTEES

    Broader source: Energy.gov [DOE]

    PurposeThis procedure describes how topical committees are organized and recognized under the Technical Standards Program. 

  3. OSTIblog Articles in the Bayesian Inference Topic | OSTI, US...

    Office of Scientific and Technical Information (OSTI)

    he was also a mathematician and developed a strong interest in probability late in life. ... After his death, a good friend... Related Topics: Bayesian Inference, Oak Ridge National ...

  4. OSTIblog Articles in the preservation Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    resources are in jeopardy should a disaster strike. One way to... Related Topics: digitization, DOE Green Energy, preservation, Science.gov, ScienceCinema, ScienceEducation.gov

  5. OSTIblog Articles in the Supercomputers Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    mathematically at an early age. His grandfather taught him how to do mathematical... Related Topics: effective field theory, renormalization, Supercomputers, theoretical physics

  6. OSTIblog Articles in the High-performance computing Topic | OSTI...

    Office of Scientific and Technical Information (OSTI)

    Research, ASCR, climate change, earth systems modeling, High-performance computing, ... ORNL's National Center for Computational Sciences... Related Topics: High-performance ...

  7. OSTIblog Articles in the DOE laboratories Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    Simply enter a search, and ScienceCinema's innovative audio indexing and speech ... and submitted by DOE... Related Topics: audio indexing, DOE laboratories, open ...

  8. OSTIblog Articles in the nuclear weapons technology Topic | OSTI...

    Office of Scientific and Technical Information (OSTI)

    noted by Pete Domenici, senior fellow at the Bipartisan Policy... Related Topics: Bureau of Mines, communications, hydraulic fracturing, nasa, nuclear weapons technology, Oil Shale

  9. OSTIblog Articles in the hydraulic fracturing Topic | OSTI, US...

    Office of Scientific and Technical Information (OSTI)

    noted by Pete Domenici, senior fellow at the Bipartisan Policy... Related Topics: Bureau of Mines, communications, hydraulic fracturing, nasa, nuclear weapons technology, Oil Shale

  10. OSTIblog Articles in the OSTI Homepage Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    STIP is a robust and effective collaboration across the DOE... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, National Library of ...

  11. OSTIblog Articles in the Products and Content Topic | OSTI, US...

    Office of Scientific and Technical Information (OSTI)

    ... STIP is a robust and effective collaboration across the DOE... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, National Library of ...

  12. OSTIblog Articles in the Science Accelerator Topic | OSTI, US...

    Office of Scientific and Technical Information (OSTI)

    STIP is a robust and effective collaboration across the DOE... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, National Library of ...

  13. OSTIblog Articles in the DOE Virtual University Topic | OSTI...

    Office of Scientific and Technical Information (OSTI)

    integrates and makes searchable the disparate and decentralized... Related Topics: DOE Virtual University, mission, National Library of Energy (NLE) - Beta, strategy, training

  14. OSTIblog Articles in the electromagnetic Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: 70th Anniversary, atomic bomb, DOE Research & Development (R&D) Accomplishments, electromagnetic, gaseous diffusion, Manhattan Project, nuclear chain reaction, ...

  15. OSTIblog Articles in the Human Genome Project Topic | OSTI, US...

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

    Related Topics: Charles DeLisi, DNA, DOE Research & Development (R&D) Accomplishments, genomics, Human Genome Project, Santa Fe Workshop, sequencing Read more... DOE Research ...

  16. OSTIblog Articles in the dissertations Topic | OSTI, US Dept...

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

    Related Topics: dissertations, DOE Research & Development (R&D) Accomplishments, DOE Research and Development (R&D) Project Summaries, E-Print Network (EPN), Energy Citations ...

  17. OSTIblog Articles in the gaseous diffusion Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: 70th Anniversary, atomic bomb, DOE Research & Development (R&D) Accomplishments, electromagnetic, gaseous diffusion, Manhattan Project, nuclear chain reaction, ...

  18. OSTIblog Articles in the sequencing Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    to the Human Genome initiative. Related Topics: Charles DeLisi, DNA, DOE Research & Development (R&D) Accomplishments, genomics, Human Genome Project, Santa Fe Workshop, sequencing

  19. OSTIblog Articles in the Information Bridge MARC Records Topic...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: Information Bridge MARC Records, patents, Science Accelerator, SciTech Connect Full-Text MARC Records Read more... OSTI's Web Metrics - Partially Measuring Success ...

  20. OSTIblog Articles in the carbon dioxide Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    regions and seasons, increasing intensity and frequency of storm events, flooding and... Related Topics: carbon dioxide, carbon sequestration, climate change, greenhouse gases

  1. OSTIblog Articles in the coauthorship Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    a certain critical temperature, and the sharp difference between the densities of water and water vapor disappears above a critical pressure. ... Related Topics: bettencourt, ...

  2. OSTIblog Articles in the bettencourt Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    a certain critical temperature, and the sharp difference between the densities of water and water vapor disappears above a critical pressure. ... Related Topics: bettencourt, ...

  3. OSTIblog Articles in the scitech connect Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    ... STIP is a robust and effective collaboration across the DOE... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, National Library of ...

  4. OSTIblog Articles in the journal literature Topic | OSTI, US...

    Office of Scientific and Technical Information (OSTI)

    STIP is a robust and effective collaboration across the DOE... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, National Library of ...

  5. OSTIblog Articles in the Science Conference Proceedings Topic...

    Office of Scientific and Technical Information (OSTI)

    STIP is a robust and effective collaboration across the DOE... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, National Library of ...

  6. OSTIblog Articles in the preservation Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    tools and services. OSTI's most recent contributions to... Related Topics: digitization, DOE Green Energy, preservation, Science.gov, ScienceCinema, ScienceEducation.gov

  7. OSTIblog Articles in the deep web technologies Topic | OSTI,...

    Office of Scientific and Technical Information (OSTI)

    During that time, working in close partnership with Deep Web Technologies, we have made ... individual source in Science.gov.... Related Topics: deep web technologies, energy portal

  8. OSTIblog Articles in the energy portal Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    During that time, working in close partnership with Deep Web Technologies, we have made ... individual source in Science.gov.... Related Topics: deep web technologies, energy portal

  9. Development of all-ceramic glow plugs for heavy-duty engines: Phase 2

    SciTech Connect (OSTI)

    Johar, S.; Das Gupta, S.

    1997-12-31

    Details the development work performed in phase 2 of a project to develop all-ceramic glow plugs for heavy-duty diesel engines. All-ceramic glow plugs, compared to traditional metallic plugs, offer a number of advantages including high corrosion resistance, operation at higher temperatures allowing for quicker start and improved engine performance, low power use, high dimensional stability, and longer service life. Work in phase 2 focused on increasing the operational voltage ratings of the proof-of-concept plugs developed in phase 1 in order to meet all commercial expectations in terms of performance, reliability, durability, and economic manufacture. The work involved optimization of the material composition to meet design specifications, development of a manufacturing process, fabrication of plugs, and bench and engine tests. Results compare the all-ceramic plugs to conventional plugs.

  10. Isotope effects on desorption kinetics of hydrogen isotopes implanted into stainless steel by glow discharge

    SciTech Connect (OSTI)

    Matsuyama, M.; Kondo, M.; Noda, N.; Tanaka, M.; Nishimura, K.

    2015-03-15

    In a fusion device the control of fuel particles implies to know the desorption rate of hydrogen isotopes by the plasma-facing materials. In this paper desorption kinetics of hydrogen isotopes implanted into type 316L stainless steel by glow discharge have been studied by experiment and numerical calculation. The temperature of a maximum desorption rate depends on glow discharge time and heating rate. Desorption spectra observed under various experimental conditions have been successfully reproduced by numerical simulations that are based on a diffusion-limited process. It is suggested, therefore, that desorption rate of a hydrogen isotope implanted into the stainless steel is limited by a diffusion process of hydrogen isotope atoms in bulk. Furthermore, small isotope effects were observed for the diffusion process of hydrogen isotope atoms. (authors)

  11. Attenuation of single-tone ultrasound by an atmospheric glow discharge plasma barrier

    SciTech Connect (OSTI)

    Stepaniuk, Vadim P.; Ioppolo, Tindaro; Oetuegen, M. Volkan; Sheverev, Valery A.

    2010-09-15

    Propagation of 143 kHz ultrasound through an atmospheric pressure glow discharge in air was studied experimentally. The plasma was a continuous dc discharge formed by a multipin electrode system. Distributions of the gas temperature were also obtained in and around the plasma using laser-induced Rayleigh scattering technique. Results show significant attenuation of the ultrasound by the glow discharge plasma barrier (up to -24 dB). The results indicate that sound attenuation does not depend on the thickness of the plasma and attenuation is caused primarily by reflection of the sound waves from the plasma due to the sharp gas temperatures gradients that form at the plasma boundary. These gradients can be as high as 80 K/mm.

  12. Special Topics and Data Reports

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

    (HTML format) Yellow Arrow Energy Consumption and Expenditures (HTML format) adobe logo Download Acrobat Reader for viewing PDF files. Special Topics and Data Reports...

  13. Innovative Topics for Advanced Biofuels

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

    Innovative Topics for Advanced Biofuels Jonathan Male, Ph.D. PNNL Report-Out Webinar ... into biomass sugars to feed advanced biofuels Separations - Compatibility with ...

  14. Investigation of reports of fusion reactions occurring at the cathode in glow discharges

    SciTech Connect (OSTI)

    Ellison, C.H.; Mahaffey, J.A.

    1996-01-01

    Recent reports of deuteron-deuteron (d-d) neutrons resulting from nuclear reactions in or at the palladium cathode of a deuterium glow discharge were investigated. The equipment, techniques, and experimental procedures are discussed in detail, as well as various possible mechanisms to produce such reactions. The results of this investigation do not confirm the presence of d-d reactions. 15 refs., 9 figs.

  15. Producing a Radioactive Source in a Deuterated Palladium Electrode Under Direct-Current Glow Discharge

    SciTech Connect (OSTI)

    Yamada, Hiroshi; Uchiyama, Kazuyoshi; Kawata, Nobuhiko; Kurisawa, Yoshiyuki; Nakamura, Mitsuru

    2001-03-15

    Anomalous gamma emission was rarely observed during direct-current glow discharge in {approx}3 Torrs of deuterium gas using a deuterated palladium foil cathode. Autoradiography after the discharge experiment showed that isotopes with low- and high-energy radiation components were produced before or during the discharge. The palladium foil after the anomalous gamma-ray emission was analyzed by secondary ion mass spectroscopy, which revealed a considerable increase in the content of iron and copper on the surface.

  16. A comparison of hydrogen vs. helium glow discharge effects on fusion device first-wall conditioning

    SciTech Connect (OSTI)

    Dylla, H.F.

    1989-09-01

    Hydrogen- and deuterium-fueled glow discharges are used for the initial conditioning of magnetic fusion device vacuum vessels following evacuation from atmospheric pressure. Hydrogenic glow discharge conditioning (GDC) significantly reduces the near-surface concentration of simple adsorbates, such as H/sub 2/O, CO, and CH/sub 4/, and lowers ion-induced desorption coefficients by typically three orders of magnitude. The time evolution of the residual gas production observed during hydrogen-glow discharge conditioning of the carbon first-wall structure of the TFTR device is similar to the time evolution observed during hydrogen GDC of the initial first-wall configuration in TFTR, which was primarily stainless steel. Recently, helium GDC has been investigated for several wall-conditioning tasks on a number of tokamaks including TFTR. Helium GDC shows negligible impurity removal with stainless steel walls. For impurity conditioning with carbon walls, helium GDC shows significant desorption of H/sub 2/O, CO, and CO/sub 2/; however, the total desorption yield is limited to the monolayer range. In addition, helium GDC can be used to displace hydrogen isotopes from the near-surface region of carbon first-walls in order to lower hydrogenic retention and recycling. 38 refs., 6 figs.

  17. Mechanism behind self-sustained oscillations in direct current glow discharges and dusty plasmas

    SciTech Connect (OSTI)

    Cho, Sung Nae

    2013-04-15

    An alternative explanation to the mechanism behind self-sustained oscillations of ions in direct current (DC) glow discharges is provided. Such description is distinguished from the one provided by the fluid models, where oscillations are attributed to the positive feedback mechanism associated with photoionization of particles and photoemission of electrons from the cathode. Here, oscillations arise as consequence of interaction between an ion and the surface charges induced by it at the bounding electrodes. Such mechanism provides an elegant explanation to why self-sustained oscillations occur only in the negative resistance region of the voltage-current characteristic curve in the DC glow discharges. Furthermore, this alternative description provides an elegant explanation to the formation of plasma fireballs in the laboratory plasma. It has been found that oscillation frequencies increase with ion's surface charge density, but at the rate which is significantly slower than it does with the electric field. The presented mechanism also describes self-sustained oscillations of ions in dusty plasmas, which demonstrates that self-sustained oscillations in dusty plasmas and DC glow discharges involve common physical processes.

  18. Events & Topics | Metrolink Tour | Photosynthetic Antenna Research Center

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

    Events & Topics | Metrolink Tour Events & Topics | Metrolink Tour

  19. Topics in inflationary cosmologies

    SciTech Connect (OSTI)

    Mahajan, S.

    1986-04-01

    Several aspects of inflationary cosmologies are discussed. An introduction to the standard hot big bang cosmological model is reviewed, and some of the problems associated with it are presented. A short review of the proposals for solving the cosmological conundrums of the big bang model is presented. Old and the new inflationary scenarios are discussed and shown to be unacceptable. Some alternative scenarios especially those using supersymmetry are reviewed briefly. A study is given of inflationary models where the same set of fields that breaks supersymmetry is also responsible for inflation. In these models, the scale of supersymmetry breaking is related to the slope of the potential near the origin and can thus be kept low. It is found that a supersymmetry breaking scale of the order of the weak breaking scale. The cosmology obtained from the simplest of such models is discussed in detail and it is shown that there are no particular problems except a low reheating temperature and a violation of the thermal constraint. A possible solution to the thermal constraint problem is given by introducing a second field, and the role played by this second field in the scenario is discussed. An alternative mechanism for the generation of baryon number within the framework of supergravity inflationary models is studied using the gravitational couplings of the heavy fields with the hidden sector (the sector which breaks supersymmetry). This mechanism is applied to two specific models - one with and one without supersymmetry breaking. The baryon to entropy ratio is found to be dependent on parameters which are model dependent. Finally, the effect of direct coupling between the two sectors on results is related, 88 refs., 6 figs.

  20. Surface oxygen micropatterns on glow discharge polymer targets by photo irradiation

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

    Reynolds, Hannah; Baxamusa, Salmaan; Haan, Steven W.; Fitzsimmons, Paul; Carlson, Lane; Farrell, Mike; Nikroo, Abbas; Watson, Brian J.

    2016-02-24

    Recent simulations predict surface oxygen may be a significant source of disruptive perturbations in the implosion process of glow-discharge polymers (GDP) ablators at the National Ignition Facility. GDP material held in ambient atmospheric conditions showed an increase in mass when stored in light transparent containers, which suggests that photo exposure is a driving force for oxygen absorption. To investigate if surface oxygen is a contributing factor of disruptive perturbations during implosion, we developed a method to imprint a periodic micropattern of oxygen on the surface of GDP and used it to fabricate a flat sample for empirical testing.

  1. Irregular-regular-irregular mixed mode oscillations in a glow discharge plasma

    SciTech Connect (OSTI)

    Ghosh, Sabuj Shaw, Pankaj Kumar Saha, Debajyoti Janaki, M. S. Iyengar, A. N. Sekar

    2015-05-15

    Floating potential fluctuations of a glow discharge plasma are found to exhibit different kinds of mixed mode oscillations. Power spectrum analysis reveals that with change in the nature of the mixed mode oscillation (MMO), there occurs a transfer of power between the different harmonics and subharmonics. The variation in the chaoticity of different types of mmo was observed with the study of Lyapunov exponents. Estimates of correlation dimension and the Hurst exponent suggest that these MMOs are of low dimensional nature with an anti persistent character. Numerical modeling also reflects the experimentally found transitions between the different MMOs.

  2. Nonlocal control of electron temperature in short direct current glow discharge plasma

    SciTech Connect (OSTI)

    Demidov, V. I.; Kudryavtsev, A. A.; Stepanova, O. M.; Kurlyandskaya, I. P.

    2014-09-15

    To demonstrate controlling the electron temperature in nonlocal plasma, experiments have been performed on a short (without positive column) dc glow discharge with a cold cathode by applying different voltages to the conducting discharge wall. The experiments have been performed for low-pressure noble gas discharges. The applied voltage can modify trapping the energetic electrons emitted from the cathode sheath and arising from the atomic and molecular processes in the plasma within the device volume. This phenomenon results in the energetic electrons heating the slow plasma electrons, which consequently modifies the electron temperature. Furthermore, a numerical model of the discharge has demonstrated the electron temperature modification for the above case.

  3. Observation and interpretation of energy efficient, diffuse direct current glow discharge at atmospheric pressure

    SciTech Connect (OSTI)

    Tang, Jie Jiang, Weiman; Wang, Yishan; Zhao, Wei; Li, Jing; Duan, Yixiang

    2015-08-24

    A diffuse direct-current glow discharge was realized with low energy consumption and high energy utilization efficiency at atmospheric pressure. The formation of diffuse discharge was demonstrated by examining and comparing the electrical properties and optical emissions of plasmas. In combination with theoretical derivation and calculation, we draw guidelines that appearance of nitrogen ions at low electron density is crucial to enhance the ambipolar diffusion for the expansion of discharge channel and the increasing ambipolar diffusion near the cathode plays a key role in the onset of diffuse discharge. An individual-discharge-channel expansion model is proposed to explain the diffuse discharge formation.

  4. On the physical processes ruling an atmospheric pressure air glow discharge operating in an intermediate current regime

    SciTech Connect (OSTI)

    Prevosto, L. Mancinelli, B.; Chamorro, J. C.; Cejas, E.; Kelly, H.

    2015-02-15

    Low-frequency (100 Hz), intermediate-current (50 to 200 mA) glow discharges were experimentally investigated in atmospheric pressure air between blunt copper electrodes. Voltage–current characteristics and images of the discharge for different inter-electrode distances are reported. A cathode-fall voltage close to 360 V and a current density at the cathode surface of about 11 A/cm{sup 2}, both independent of the discharge current, were found. The visible emissive structure of the discharge resembles to that of a typical low-pressure glow, thus suggesting a glow-like electric field distribution in the discharge. A kinetic model for the discharge ionization processes is also presented with the aim of identifying the main physical processes ruling the discharge behavior. The numerical results indicate the presence of a non-equilibrium plasma with rather high gas temperature (above 4000 K) leading to the production of components such as NO, O, and N which are usually absent in low-current glows. Hence, the ionization by electron-impact is replaced by associative ionization, which is independent of the reduced electric field. This leads to a negative current-voltage characteristic curve, in spite of the glow-like features of the discharge. On the other hand, several estimations show that the discharge seems to be stabilized by heat conduction; being thermally stable due to its reduced size. All the quoted results indicate that although this discharge regime might be considered to be close to an arc, it is still a glow discharge as demonstrated by its overall properties, supported also by the presence of thermal non-equilibrium.

  5. OSTIblog Articles in the Digital Object Identifier Topic | OSTI...

    Office of Scientific and Technical Information (OSTI)

    focus mainly on natural gas resources or solar power...stuff like that?" you think. "I ... Search on the word "solar," for example, and you will... Related Topics: data, data sets, ...

  6. OSTIblog Articles in the journal literature Topic | OSTI, US...

    Office of Scientific and Technical Information (OSTI)

    OSTI cannot be immune to these disruptive forces, nor would we wish it to be. Here,... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, ...

  7. OSTIblog Articles in the archimedes Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    if they had been available, but he did not live long enough to invent those things, which he probably could have if given... Related Topics: archimedes, multimedia, new media, slac

  8. OSTIblog Articles in the OSTI Facebook Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    OSTI Experiences Facebook--Part One The Office of Scientific and Technical Information (OSTI) for the U.S. Department of Energy... Related Topics: OSTI Facebook, social media, sti, ...

  9. OSTIblog Articles in the researchers Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    Documents such as these then are of the sort that becomes the central body of scientific information... Related Topics: colleagues, documents, E-Print Network (EPN), e-prints, full ...

  10. OSTIblog Articles in the searchable Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    Documents such as these then are of the sort that becomes the central body of scientific information... Related Topics: colleagues, documents, E-Print Network (EPN), e-prints, full ...

  11. OSTIblog Articles in the colleagues Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    Documents such as these then are of the sort that becomes the central body of scientific information... Related Topics: colleagues, documents, E-Print Network (EPN), e-prints, full ...

  12. OSTIblog Articles in the digitization Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    ... OSTI's most recent contributions to... Related Topics: digitization, DOE Green Energy, preservation, Science.gov, ScienceCinema, ScienceEducation.gov Read more... You Can Be a Part ...

  13. OSTIblog Articles in the information Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: anniversary, CENDI, information, partnership, science, Science.gov, USA.gov Read more... How to Integrate Anything on the Web by Dr. Walt Warnick 03 Aug, 2011 in ...

  14. OSTIblog Articles in the osti corollary Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: information sharing, osti corollary, r&d programs Read more... Dynamically OSTI--Web 2.0 -- Enabling Information-Enabling Users-Enabling Acceleration by Erin ...

  15. Investigation of helium ion production in constricted direct current plasma ion source with layered-glows

    SciTech Connect (OSTI)

    Lee, Yuna; Chung, Kyoung-Jae; Park, Yeong-Shin; Hwang, Y. S.; Center for Advance Research in Fusion Reactor Engineering, Seoul National University, Seoul 151-744

    2014-02-15

    Generation of helium ions is experimentally investigated with a constricted direct current (DC) plasma ion source operated at layered-glow mode, in which electrons could be accelerated through multiple potential structures so as to generate helium ions including He{sup 2+} by successive ionization collisions in front of an extraction aperture. The helium discharge is sustained with the formation of a couple of stable layers and the plasma ball with high density is created near the extraction aperture at the operational pressure down to 0.6 Torr with concave cathodes. The ion beam current extracted with an extraction voltage of 5 kV is observed to be proportional to the discharge current and inversely proportional to the operating pressure, showing high current density of 130 mA/cm{sup 2} and power density of 0.52 mA/cm{sup 2}/W. He{sup 2+} ions, which were predicted to be able to exist due to multiple-layer potential structure, are not observed. Simple calculation on production of He{sup 2+} ions inside the plasma ball reveals that reduced operating pressure and increased cathode area will help to generate He{sup 2+} ions with the layered-glow DC discharge.

  16. PRODUCTION OF HIGHER STRENGTH THIN WALLED GLOW DISCHARGE POLYMER SHELLS FOR CRYOGENIC EXPERIMENTS AT OMEGA

    SciTech Connect (OSTI)

    NIKROO,A; CZECHOWICZ,DG; CASTILLO,ER; PONTELANDOLFO,JM

    2002-04-01

    OAK A271 PRODUCTION OF HIGHER STRENGTH THIN WALLED GLOW DISCHARGE POLYMER SHELLS FOR CRYOGENIC EXPERIMENTS AT OMEGA. Thin walled polymer shells are needed for OMEGA cryogenic laser experiments. These capsules need to be about 900 {micro}m in diameter and as thin as possible (approx 1-2 {micro}m), while having enough strength to be filled with DT as fast as possible to about 1000 atm. The authors have found that by optimizing the coating parameters in the glow discharge polymer (GDP) deposition system, traditionally used for making ICF targets, they can routinely make robust, {approx} 1.5 {micro}m thick, 900 {micro}m diameter GDP shells with buckle strengths of over 0.3 atm. This is twice the strength of shells made prior to the optimization and is comparable to values quoted for polyimide shells. In addition, these shells were found to be approximately three times more permeable and over 20% denser than previously made GDP shells. The combination of higher strength and permeability is ideal for direct drive cryogenic targets at OMEGA. Shells as thin as 0.5 {micro}m have been made. In this paper, the authors discuss the shell fabrication process, effects of modifying various GDP deposition parameters on shell properties and chemical composition.

  17. Charging of dust grains in a nonequilibrium plasma of a stratified glow discharge

    SciTech Connect (OSTI)

    Sukhinin, G. I.; Fedoseev, A. V.

    2007-12-15

    A theoretical model is presented that describes the charging of dust grains in the positive plasma column of a stratified glow dc discharge in argon. A one-dimensional self-consistent model is used to obtain axial profiles of the electric field, as well as the electron energy distribution function along the axis of the discharge tube. Radial profiles of the electric field are determined in the ambipolar diffusion approximation. It is assumed that, in the radial direction, the electron distribution function depends only on the total electron energy. Two-dimensional distributions of the discharge plasma parameters are calculated and used to determine the potential and charge of a test dust grain at a certain point within the discharge and the electrostatic forces acting on it. It is shown that the grain charge distribution depends strongly on the nonequilibrium electron distribution function and on the nonuniform distribution of the electric field in a stratified glow discharge. A discussion is presented on the suspension of dust grains, the separation of grains by size in the discharge striations, and a possible mechanism for the onset of vortex dust motion at the edge of a dust cloud.

  18. Dynamic model based on voltage transfer curve for pattern formation in dielectric barrier glow discharge

    SciTech Connect (OSTI)

    Li, Ben; He, Feng; Ouyang, Jiting; Duan, Xiaoxi

    2015-12-15

    Simulation work is very important for understanding the formation of self-organized discharge patterns. Previous works have witnessed different models derived from other systems for simulation of discharge pattern, but most of these models are complicated and time-consuming. In this paper, we introduce a convenient phenomenological dynamic model based on the basic dynamic process of glow discharge and the voltage transfer curve (VTC) to study the dielectric barrier glow discharge (DBGD) pattern. VTC is an important characteristic of DBGD, which plots the change of wall voltage after a discharge as a function of the initial total gap voltage. In the modeling, the combined effect of the discharge conditions is included in VTC, and the activation-inhibition effect is expressed by a spatial interaction term. Besides, the model reduces the dimensionality of the system by just considering the integration effect of current flow. All these greatly facilitate the construction of this model. Numerical simulations turn out to be in good accordance with our previous fluid modeling and experimental result.

  19. Measurement of gas temperature and convection velocity profiles in a dc atmospheric glow discharge

    SciTech Connect (OSTI)

    Stepaniuk, Vadim P.; Ioppolo, Tindaro; Oetuegen, M. Volkan; Sheverev, Valery A.

    2007-12-15

    Gas temperature and convective velocity distributions are presented for an unconfined glow discharge in air at atmospheric pressure, with electric currents ranging between 30 and 92 mA. The vertically oriented discharge was formed between a pin anode (top) and an extended cathode. The temperature and velocity profiles were measured using laser-induced Rayleigh scattering and laser Doppler anemometry techniques, respectively. The temperature field exhibited a conical shape with the radius of hot temperature zone increasing toward the anode. A maximum temperature of 2470 K was observed on the discharge axis with the discharge current of 92 mA. Air velocity measurements around the discharge demonstrated that the shape and magnitude of the temperature field are strongly affected by natural convection. Estimates indicate that convective losses may account for more than 50% of the power input into the positive column of the discharge. The measured temperature fields and convective velocity profiles provide a set of data that is important for the evaluation of dc atmospheric glow discharges in various applications such as sound manipulation and acoustic noise mitigation.

  20. SU-E-T-354: Peak Temperature Ratio of TLD Glow Curves to Investigate the Spatial Dependence of LET in a Clinical Proton Beam

    SciTech Connect (OSTI)

    Reft, C [UniversityChicago, Chicago, IL (United States); Pankuch, M; Ramirez, H [ProCure Treatment Centers, Warrenville, IL (United States)

    2014-06-01

    Purpose: Use the ratio of the two high temperature peaks (HTR) in TLD 700 glow curves to investigate spatial dependence of the linear energy transfer (LET) in proton beams. Studies show that the relative biological effectiveness (RBE) depends upon the physical dose as well as its spatial distribution. Although proton therapy uses a spatially invariant RBE of 1.1, studies suggest that the RBE increases in the distal edge of a spread out Bragg peak (SOBP) due to the increased LET. Methods: Glow curve studies in TLD 700 show that the 280 C temperature peak is more sensitive to LET radiation than the 210 C temperature peak. Therefore, the areas under the individual temperature peaks for TLDs irradiated in a proton beam normalized to the peak ratio for 6 MV photons are used to determine the HTR to obtain information on its LET. TLD 700 chips with dimensions 0.310.310.038 cc are irradiated with 90 MeV protons at varying depths in a specially designed blue wax phantom to investigate LET spatial dependence. Results: Five TLDs were placed at five different depths of the percent depth dose curve (PDD) of range 16.2 cm: center of the SOPB and approximately at the 99% distal edge, 90%, 75% and 25% of the PDD, respectively. HTR was 1.3 at the center of the SOBP and varied from 2.2 to 3.9 which can be related to an LET variation from 0.5 to 18 KeV/? via calibration with radiation beams of varying LET. Conclusion: HTR data show a spatially invariant LET slightly greater than the 6 MV radiations in the SOBP, but a rapidly increasing LET at the end of the proton range. These results indicate a spatial variation in RBE with potential treatment consequences when selecting treatment margins to minimize the uncertainties in proton RBE.

  1. Missouri Botanical Gardens Tour | Events & Topics | Photosynthetic...

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

    | Events & Topics Missouri Botanical Gardens Tour | Events & Topics PARC welcomed community members for our guided tour of the Missouri Botanical Garden. http:...

  2. Events & Topics In Bioenergy | Photosynthetic Antenna Research...

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

    Events & Topics In Bioenergy Events & Topics In Bioenergy Dr. Chenyang Lu Smart Building with Wireless Sensor Networks Dr. Joseph Cullen "Measuring the Environmental Benefits of ...

  3. OSTIblog Articles in the ERIC Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Aeronautics and Space Administration (NASA), the National Institutes of Health (NIH), ... In addition, links are provided to related... Related Topics: ERIC, nasa, NOAA, NSDL, ...

  4. OSTIblog Articles in the world wide web Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    world wide web Topic The Knowledge Investment Curve by Dr. Walt Warnick 19 Aug, 2009 in ... to colleague... Related Topics: knowledge, Web, world wide web, WorldWideScience.org (WWS)

  5. Account of nonlocal ionization by fast electrons in the fluid models of a direct current glow discharge

    SciTech Connect (OSTI)

    Rafatov, I.; Bogdanov, E. A.; Kudryavtsev, A. A.

    2012-09-15

    We developed and tested a simple hybrid model for a glow discharge, which incorporates nonlocal ionization by fast electrons into the 'simple' and 'extended' fluid frameworks. Calculations have been performed for an argon gas. Comparison with the experimental data as well as with the hybrid (particle) and fluid modelling results demonstated good applicability of the proposed model.

  6. Topic A Note: Includes STEPS Subtopic

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

    Topic A Note: Includes STEPS Subtopic 33 Total Projects Developing and Enhancing Workforce Training Programs

  7. Role of electrostatic and magnetic electron confinement in a hollow-cathode glow discharge in a nonuniform magnetic field

    SciTech Connect (OSTI)

    Metel, A. S. Grigoriev, S. N.; Volosova, M. A.; Bolbukov, V. P.; Melnik, Yu. A.

    2015-02-15

    Glow discharge with electron confinement in an electrostatic trap has been studied. The trap is formed by a cylindrical hollow cathode, as well as by a flat target on its bottom and a grid covering its output aperture, both being negatively biased relative to the cathode. At a gas pressure of 0.2–0.4 Pa, the fraction of ions sputtering the target (δ = 0.13) in the entire number of ions emitted by the uniform discharge plasma corresponds to the ratio of the target surface area to the total surface area of the cathode, grid, and target. When a nonuniform magnetic field with force lines passing through the target center (where the magnetic induction reaches 35 mT), as well as through the grid, hollow cathode, and target periphery (where the field lines are arc-shaped), is applied to the trap, its influence on the discharge depends on the magnetic induction B{sub 0} at the target edge. At B{sub 0} = 1 mT, the electrons emitted from the target periphery and drifting azimuthally in the arc-shaped field insignificantly contribute to gas ionization. Nevertheless, since fast electrons that are emitted from the cathode and oscillate inside it are forced by the magnetic field to come more frequently to the target, thereby intensifying gas ionization near the latter, the fraction δ doubles and the plasma density near the target becomes more than twice as high as that near the grid. At B{sub 0} = 6 mT, the contribution of electrons emitted from the target surface to gas ionization near the target grows up and δ increases two more times. At cathode-target voltages in the range of 0–3 kV, the current in the target circuit vanishes as the voltage between the anode and the cathode decreases to zero.

  8. Hot topics from the Tevatron

    SciTech Connect (OSTI)

    Glenzinski, D.; /Fermilab

    2008-01-01

    The Tevatron Run-II began in March 2001. To date, both the CDF and D0 experiments have collected 1 fb{sup -1} of data each. The results obtained from this data set were summarized at this conference in 39 parallel session presentations covering a wide range of topics. The author summarizes the most important of those results here and comments on some of the prospects for the future.

  9. 2012 LANSCE Topical User Meeting

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

    2 LANSCE Topical User Meeting January 9-10, 2012 The Office of Defense Programs is developing a long-term strategy for the construction of new experimental science facilities supporting NNSA missions. The new facilities will provide the critical science and technology capabilities necessary to execute the 21 st century responsibilities of NNSA in executing its mission and in supporting the broader national security agenda. The call focuses on large facilities with costs exceeding $100M. The NNSA

  10. The recovery of glow-plasma structure in atmospheric radio frequency microplasmas at very small gaps

    SciTech Connect (OSTI)

    Zhang Yuantao; Shang Wanli

    2011-11-15

    In atmospheric radio frequency discharges at 13.56 MHz, with the electrode gap reduced, the sheath region eventually occupies a main portion of the electrode spacing and the bulk plasma region is significantly compressed. The computational results in this letter based on a one-dimensional fluid model show that by increasing the excitation frequency over 13.56 MHz, the traditional glow-plasma structure could gradually recover even at very small sizes with a well defined quasineutral plasma region, and the electron density is improved but the electric fields in sheath region are reduced. This study indicates that the excitation frequency can be used to modulate the discharge structure and then tailor the plasma-surface interaction in atmospheric microplasmas.

  11. Observation of dust torus with poloidal rotation in direct current glow discharge plasma

    SciTech Connect (OSTI)

    Kaur, Manjit Bose, Sayak; Chattopadhyay, P. K. Sharma, Devendra; Ghosh, J.; Saxena, Y. C.

    2015-03-15

    Observation of dust cloud rotation in parallel-plate DC glow discharge plasma is reported here. The experiments are carried out at high pressures (∼130 Pa) with a metallic ring placed on the lower electrode (cathode). The dust cloud rotates poloidally in the vertical plane near the cathode surface. This structure is continuous toroidally. Absence of magnetic field rules out the possibility of E × B induced ion flow as the cause of dust rotation. The dust rotational structures exist even with water cooled cathode. Therefore, temperature gradient driven mechanisms, such as thermophoretic force, thermal creep flow, and free convection cannot be causing the observed dust rotation. Langmuir probe measurement reveals the existence of a sharp density gradient near the location of the rotating dust cloud. The gradient in the density, giving rise to a gradient in the ion drag force, has been identified as the principal cause behind the rotation of dust particles.

  12. Decomposition of toluene in a steady-state atmospheric-pressure glow discharge

    SciTech Connect (OSTI)

    Trushkin, A. N.; Grushin, M. E.; Kochetov, I. V.; Trushkin, N. I.; Akishev, Yu. S.

    2013-02-15

    Results are presented from experimental studies of decomposition of toluene (C{sub 6}H{sub 5}CH{sub 3}) in a polluted air flow by means of a steady-state atmospheric pressure glow discharge at different water vapor contents in the working gas. The experimental results on the degree of C{sub 6}H{sub 5}CH{sub 3} removal are compared with the results of computer simulations conducted in the framework of the developed kinetic model of plasma chemical decomposition of toluene in the N{sub 2}: O{sub 2}: H{sub 2}O gas mixture. A substantial influence of the gas flow humidity on toluene decomposition in the atmospheric pressure glow discharge is demonstrated. The main mechanisms of the influence of humidity on C{sub 6}H{sub 5}CH{sub 3} decomposition are determined. The existence of two stages in the process of toluene removal, which differ in their duration and the intensity of plasma chemical decomposition of C{sub 6}H{sub 5}CH{sub 3} is established. Based on the results of computer simulations, the composition of the products of plasma chemical reactions at the output of the reactor is analyzed as a function of the specific energy deposition and gas flow humidity. The existence of a catalytic cycle in which hydroxyl radical OH acts a catalyst and which substantially accelerates the recombination of oxygen atoms and suppression of ozone generation when the plasma-forming gas contains water vapor is established.

  13. WTP Communications Strategy Discussion Topics

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

    Discussion Topics For discussion at the April 7, 2015 PIC meeting Issue Managers: Bob Suyama, Dave Bernhard, Melanie Myers-Magnuson, Dirk Dunning, Liz Mattson, Pam Larsen, Ken Niles Some potential questions and areas that the TWC/PIC need to discuss in order to develop a Communica- tions Strategy for the Waste Treatment Plant. These questions represent the data that the TWC/PIC might need in order to provide a plan that will be of value to the Tri-Party Agencies and the Public and Stakeholders.

  14. Framework Topic Briefing: Direct Feed LAW

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

    February 13, 2014 Framework Topic Briefing: Direct Feed LAW Next steps: Put Dick's handouts on SharePoint * Continue Framework topic briefing series Page 1 System Plan 7 Next ...

  15. TEC Working Group Topic Groups Routing

    Broader source: Energy.gov [DOE]

    The Routing Topic Group has been established to examine topics of interest and relevance concerning routing of shipments of spent nuclear fuel (SNF) and high-level radioactive waste (HLW) to a...

  16. Energy & Manufacturing Workforce Training Topics List - Version...

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

    & Manufacturing Workforce Training Topics List - Version 1.7 (02.11.14) Energy & Manufacturing Workforce Training Topics List - Version 1.7 (02.11.14) View this searchable list of ...

  17. OSTIblog Articles in the Thomas Bayes Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    he was also a mathematician and developed a strong interest in probability late in life. ... After his death, a good friend... Related Topics: Bayesian Inference, Oak Ridge National ...

  18. OSTIblog Articles in the authors Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    intensive and represents a major cost. Information experts at OSTI have demonstrated the capability to identify high quality... Related Topics: authors, r&d, reviewers, semantic

  19. OSTIblog Articles in the DOE EcoCar 2 Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    chart or developing "Living Light", a net-zero energy home for DOE's Solar Decathlon. ... Related Topics: .EDUconnections, cancer, DOE EcoCar 2, DOE's Solar Decathlon, Knoxville, ...

  20. OSTIblog Articles in the Knoxville Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    chart or developing "Living Light", a net-zero energy home for DOE's Solar Decathlon. ... Related Topics: .EDUconnections, cancer, DOE EcoCar 2, DOE's Solar Decathlon, Knoxville, ...

  1. OSTIblog Articles in the OSTI Mobile Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    software, project summaries, patents, and e-prints... Related Topics: DOE Green Energy, DOepatents, Energy Citations Database (ECD), Information Bridge (IB), mobile, OSTI ...

  2. OSTIblog Articles in the databases Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    ... ORNL is also well on its way to creating nano catalysts for diesel engine emission ... Related Topics: Brookhaven, databases, nano, ORNL Read more... Making Scientific Databases ...

  3. OSTIblog Articles in the @ostigov Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    TwitterOSTI2.jpg @OSTIgov Twitter is Trending Read more about 4809 Social media has ... to folks interested in... Related Topics: @ostigov, osti, science, social media, twitter

  4. OSTIblog Articles in the marc Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    suite of web-based information services. An information transaction occurs when... Related Topics: Information Bridge (IB), Information Bridge MARC Records, marc, mission, Science ...

  5. OSTIblog Articles in the nasa Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: Bureau of Mines, communications, hydraulic fracturing, nasa, nuclear weapons technology, Oil Shale Read more... OSTI CELEBRATES SCIENCE AND ENGINEERING - COME JOIN ...

  6. OSTIblog Articles in the Stanford Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Originally a particle physics research center, SLAC is now a multipurpose laboratory for astrophysics, photon science, accelerator and particle... Related Topics: Nobel Prize, ...

  7. OSTIblog Articles in the ScienceCinema Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    ... OSTI's most recent contributions to... Related Topics: digitization, DOE Green Energy, preservation, Science.gov, ScienceCinema, ScienceEducation.gov Read more... Faster than the ...

  8. OSTIblog Articles in the osti Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    STIP is a robust and effective collaboration across the DOE... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, National Library of ...

  9. OSTIblog Articles in the SciTech Connect Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    ... STIP is a robust and effective collaboration across the DOE... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, National Library of ...

  10. OSTIblog Articles in the strategy Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    integrates and makes searchable the disparate and decentralized... Related Topics: DOE Virtual University, mission, National Library of Energy (NLE) - Beta, strategy, training

  11. OSTIblog Articles in the labs Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    "new" scientists come from the general public fortuitously, and... Related Topics: antibodies, cancer, high school, labs, open access journals, pancreatic cancer, scientists, test

  12. OSTIblog Articles in the Charles DeLisi Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    to the Human Genome initiative. Related Topics: Charles DeLisi, DNA, DOE Research & Development (R&D) Accomplishments, genomics, Human Genome Project, Santa Fe Workshop, sequencing

  13. OSTIblog Articles in the genomics Topic | OSTI, US Dept of Energy...

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

    ... Related Topics: Charles DeLisi, DNA, DOE Research & Development (R&D) Accomplishments, genomics, Human Genome Project, Santa Fe Workshop, sequencing Read more... Managing the ...

  14. OSTIblog Articles in the DNA Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    to the Human Genome initiative. Related Topics: Charles DeLisi, DNA, DOE Research & Development (R&D) Accomplishments, genomics, Human Genome Project, Santa Fe Workshop, sequencing

  15. OSTIblog Articles in the stip Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    ... In addition, we ensure that appropriate... Related Topics: Manhattan Project, r&d, Scientific and Technical Information Program Website, sti, stip Read more... DOE Data: Would We, ...

  16. OSTIblog Articles in the Santa Fe Workshop Topic | OSTI, US Dept...

    Office of Scientific and Technical Information (OSTI)

    to the Human Genome initiative. Related Topics: Charles DeLisi, DNA, DOE Research & Development (R&D) Accomplishments, genomics, Human Genome Project, Santa Fe Workshop, sequencing

  17. OSTIblog Articles in the Energy Files Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    ... Related Topics: dissertations, DOE Research & Development (R&D) Accomplishments, DOE Research and Development (R&D) Project Summaries, E-Print Network (EPN), Energy Citations ...

  18. OSTIblog Articles in the theses Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: dissertations, DOE Research & Development (R&D) Accomplishments, DOE Research and Development (R&D) Project Summaries, E-Print Network (EPN), Energy Citations ...

  19. OSTIblog Articles in the Roosevelt Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: 70th Anniversary, atomic bomb, DOE Research & Development (R&D) Accomplishments, electromagnetic, fission, gaseous diffusion, Manhattan Project, nuclear chain ...

  20. OSTIblog Articles in the heat pumps Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    by the Building... Related Topics: Building Technologies Program, EERE, energy consumption, geothermal, heat pumps, Office of Energy Efficiency and Renewable Energy, renewable ...

  1. OSTIblog Articles in the ETDEWEB Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    ... coal and fossil fuels; renewable energy technologies and much, much more. ETDE is always open to receiving your thoughts and suggestions. Related Topics: climate change, coal, ...

  2. OSTIblog Articles in the widgets Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    ... DOE resources including grants and contracts, internships,... Related Topics: .EDUconnections, education, widgets Read more... Dynamically OSTI--Web 2.0 -- Enabling ...

  3. OSTIblog Articles in the kaiser Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    a certain critical temperature, and the sharp difference between the densities of water and water vapor disappears above a critical pressure. ... Related Topics: bettencourt, ...

  4. OSTIblog Articles in the ScienceLab Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    STIP is a robust and effective collaboration across the DOE... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, National Library of ...

  5. OSTIblog Articles in the Adopt-A-Doc Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    STIP is a robust and effective collaboration across the DOE... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, National Library of ...

  6. OSTIblog Articles in the DOE STI Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    STIP is a robust and effective collaboration across the DOE... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, National Library of ...

  7. OSTIblog Articles in the deep web Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Every diffusion process has a speed. Our thesis is that speeding up diffusion will accelerate the advancement of science.... Related Topics: deep web, diffusion of knowledge, isaac ...

  8. OSTIblog Articles in the FEMA Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Although the development of the Department of Energy's web-searchable databases greatly ... a coherent government R&D presence on the web.... Related Topics: CENDI, ...

  9. Acoustic wave propagation in uniform glow discharge plasma at an arbitrary angle between the electric field and wave vectors

    SciTech Connect (OSTI)

    Soukhomlinov, Vladimir; Gerasimov, Nikolay; Sheverev, Valery A.

    2008-08-15

    This paper extends the recently reported one-dimensional model for sound propagation in glow discharge plasma to arbitrary mutual orientation of the plasma electric field and acoustic wave vectors. The results demonstrate that an acoustic wave in plasma may amplify, attenuate, or remain unchanged depending on the angle between these vectors and on the power input into the discharge. Quantitative evaluations indicate that for glow discharge plasma of a self-sustained discharge in air at the electric current densities of the order of 100 mA cm{sup -2}, a gain of as much as 1 m{sup -1} at 0 deg. angle between the vectors changes to similar strength attenuation for the 90 deg. angle.

  10. Technical Assistance Topics | Department of Energy

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

    Technical Assistance Topics Technical Assistance Topics Topics addressed are those of greatest interest to states, regions, and Tribes, including: Reliability, resiliency, and cyber security of electric power systems Electric resource planning, integrated resource planning, regional transmission planning, and resource acquisition strategies Ratepayer-funded energy efficiency, demand response, and smart grid programs Renewable energy development, including state renewable portfolio standards,

  11. Technical Assistance Topics | Department of Energy

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

    Electricity Policy Coordination and Implementation » Electricity Policy Technical Assistance Program » Technical Assistance Topics Technical Assistance Topics Topics addressed are those of greatest interest to states, regions, and Tribes, including: Reliability, resiliency, and cyber security of electric power systems Electric resource planning, integrated resource planning, regional transmission planning, and resource acquisition strategies Ratepayer-funded energy efficiency, demand response,

  12. Studies on gas breakdown in pulsed radio frequency atmospheric pressure glow discharges

    SciTech Connect (OSTI)

    Huo, W. G. [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China) [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China); School of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029 (China); Jian, S. J.; Yao, J.; Ding, Z. F., E-mail: zfding@dlut.edu.cn [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China)

    2014-05-15

    In pulsed RF atmospheric pressure glow discharges, the gas breakdown judged by the rapid drop in the amplitude of the pulsed RF voltage is no longer universally true. The steep increment of the plasma-absorbed RF power is proposed to determine the gas breakdown. The averaged plasma-absorbed RF power over a pulse period is used to evaluate effects of the preceding pulsed RF discharge on the breakdown voltage of the following one, finding that the breakdown voltage decreases with the increment in the averaged plasma-absorbed RF power under constant pulse duty ratio. Effects of the pulse off-time on the breakdown voltage and the breakdown delay time are also studied. The obtained dependence of the breakdown voltage on the pulse off-time is indicative of the transitional plasma diffusion processes in the afterglow. The breakdown voltage varies rapidly as the plasma diffuses fast in the region of moderate pulse off-time. The contribution of nitrogen atom recombination at the alumina surface is demonstrated in the prolonged memory effect on the breakdown delay time vs. the pulse off-time and experimentally validated by introducing a trace amount of nitrogen into argon at short and long pulse off-times.

  13. Non-linear macro evolution of a dc driven micro atmospheric glow discharge

    SciTech Connect (OSTI)

    Xu, S. F.; Zhong, X. X.

    2015-10-15

    We studied the macro evolution of the micro atmospheric glow discharge generated between a micro argon jet into ambient air and static water. The micro discharge behaves similarly to a complex ecosystem. Non-linear behaviors are found for the micro discharge when the water acts as a cathode, different from the discharge when water behaves as an anode. Groups of snapshots of the micro discharge formed at different discharge currents are captured by an intensified charge-coupled device with controlled exposure time, and each group consisted of 256 images taken in succession. Edge detection methods are used to identify the water surface and then the total brightness is defined by adding up the signal counts over the area of the micro discharge. Motions of the water surface at different discharge currents show that the water surface lowers increasingly rapidly when the water acts as a cathode. In contrast, the water surface lowers at a constant speed when the water behaves as an anode. The light curves are similar to logistic growth curves, suggesting that a self-inhibition process occurs in the micro discharge. Meanwhile, the total brightness increases linearly during the same time when the water acts as an anode. Discharge-water interactions cause the micro discharge to evolve. The charged particle bomb process is probably responsible for the different behaviors of the micro discharges when the water acts as cathode and anode.

  14. Decision Point 1 Topical Report

    SciTech Connect (OSTI)

    Yablonsky, Al; Barsoumian, Shant; Legere, David

    2013-05-01

    This Topical Report addresses accomplishments achieved during Phase 2a of the SkyMine® Carbon Mineralization Pilot Project. The primary objectives of this project are to design, construct, and operate a system to capture CO2 from a slipstream of flue gas from a commercial coal-fired cement kiln, convert that CO2 to products having commercial value (i.e., beneficial use), show the economic viability of the CO2 capture and conversion process, and thereby advance the technology to the point of readiness for commercial scale demonstration and proliferation. The overall process is carbon negative, resulting in mineralization of CO2 that would otherwise be released into the atmosphere. The project will also substantiate market opportunities for the technology by sales of chemicals into existing markets, and identify opportunities to improve technology performance and reduce costs at the commercial scale. The project is being conducted in two phases. The primary objectives of Phase 1 were to elaborate proven SkyMine® process chemistry to commercial pilot-scale operation and complete the preliminary design for the pilot plant to be built and operated in Phase 2, complete a NEPA evaluation, and develop a comprehensive carbon life cycle analysis. The objective of the current Phase (2a) is to complete the detailed design of the pilot plant to be built in Phase 2b.

  15. Tracking topic birth and death in LDA.

    SciTech Connect (OSTI)

    Wilson, Andrew T.; Robinson, David Gerald

    2011-09-01

    Most topic modeling algorithms that address the evolution of documents over time use the same number of topics at all times. This obscures the common occurrence in the data where new subjects arise and old ones diminish or disappear entirely. We propose an algorithm to model the birth and death of topics within an LDA-like framework. The user selects an initial number of topics, after which new topics are created and retired without further supervision. Our approach also accommodates many of the acceleration and parallelization schemes developed in recent years for standard LDA. In recent years, topic modeling algorithms such as latent semantic analysis (LSA)[17], latent Dirichlet allocation (LDA)[10] and their descendants have offered a powerful way to explore and interrogate corpora far too large for any human to grasp without assistance. Using such algorithms we are able to search for similar documents, model and track the volume of topics over time, search for correlated topics or model them with a hierarchy. Most of these algorithms are intended for use with static corpora where the number of documents and the size of the vocabulary are known in advance. Moreover, almost all current topic modeling algorithms fix the number of topics as one of the input parameters and keep it fixed across the entire corpus. While this is appropriate for static corpora, it becomes a serious handicap when analyzing time-varying data sets where topics come and go as a matter of course. This is doubly true for online algorithms that may not have the option of revising earlier results in light of new data. To be sure, these algorithms will account for changing data one way or another, but without the ability to adapt to structural changes such as entirely new topics they may do so in counterintuitive ways.

  16. Physics Topics - MST - UW Plasma Physics

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

    Physics Topics UW Madison Madison Symmetric Torus Physics Topics MST HomeGraduate Student InformationLinksTourControl and Auxiliary SystemsPhysics TopicsDeviceResearch MissionMST People mst logo CPLA Home Directory Publications Links Internal University of Wisconsin Physics Department Research funding includes support from: Department of Energy National Science Foundation The MST physics challenges are large and many, but much of our work is captured in the following four major RFP physics goals

  17. LANSCE | Users | LUG | Topical User Workshop

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

    2 LANSCE Topical User Meeting | January 9-10 2012 LANSCE Topical User Workshop LANSCE will host the 2012 Topical User Workshop, January 9-10, 2012. We hope to see you there! Registration | Accommodations | Agenda (some presentations are included on the agenda) LANL foreign nationals may register at anytime. | Poster Dimensions: 32 in x 40 in This workshop will solicit user input for the scientific opportunities offered by the pulse stacker and superconducting accelerator that LANSCE has proposed

  18. Preface: Special Topic on Interfacial and Confined Water (Journal...

    Office of Scientific and Technical Information (OSTI)

    Preface: Special Topic on Interfacial and Confined Water Citation Details In-Document Search Title: Preface: Special Topic on Interfacial and Confined Water This Special Topic on...

  19. Topic Index to the DOE Administrative Records Disposition Schedules...

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

    Topic Index to the DOE Administrative Records Disposition Schedules Topic Index to the DOE Administrative Records Disposition Schedules Topic Index to the DOE Administrative...

  20. Interconnection-Wide Transmission Planning Initiative: Topic...

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

    Western Interconnection on Electric Resource Planning and Priorities Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Western ...

  1. Interconnection-Wide Transmission Planning Initiative: Topic...

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

    Eastern Interconnection on Electric Resource Planning and Priorities Interconnection-Wide Transmission Planning Initiative: Topic B, Cooperation Among States in the Eastern ...

  2. Interconnection-Wide Transmission Planning Initiative: Topic...

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

    A, Interconnection-Level Analysis and Planning Interconnection-Wide Transmission Planning Initiative: Topic A, Interconnection-Level Analysis and Planning A description of the ...

  3. Interconnection-Wide Transmission Planning Initiative: Topic...

    Energy Savers [EERE]

    the Texas Interconnection Interconnection-Wide Transmission Planning Initiative: Topic B, State Agency Input Regarding Electric Resource and Transmission Planning in the Texas ...

  4. Investigations on detonation shock dynamics and related topics. Final report

    SciTech Connect (OSTI)

    Stewart, D.S.

    1993-11-01

    This document is a final report that summarizes the research findings and research activities supported by the subcontract DOE-LANL-9-XG8-3931P-1 between the University of Illinois (D. S. Stewart Principal Investigator) and the University of California (Los Alamos National Laboratory, M-Division). The main focus of the work has been on investigations of Detonation Shock Dynamics. A second emphasis has been on modeling compaction of energetic materials and deflagration to detonation in those materials. The work has led to a number of extensions of the theory of Detonation Shock Dynamics (DSD) and its application as an engineering design method for high explosive systems. The work also enhanced the hydrocode capabilities of researchers in M-Division by modifications to CAVEAT, an existing Los Alamos hydrocode. Linear stability studies of detonation flows were carried out for the purpose of code verification. This work also broadened the existing theory for detonation. The work in this contract has led to the development of one-phase models for dynamic compaction of porous energetic materials and laid the groundwork for subsequent studies. Some work that modeled the discrete heterogeneous behavior of propellant beds was also performed. The contract supported the efforts of D. S. Stewart and a Postdoctoral student H. I. Lee at the University of Illinois.

  5. Browse OSTIblog Articles by Related Topics | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    W X Y 1970s 21st century 3D Printing 70th Anniversary 911 ... accomplishments ACME additive manufacturing adhesive tape ... Alzheimer's ambient-gas America American ...

  6. Research topics related to ESI | OpenEI Community

    Open Energy Info (EERE)

    A. C. Z. de Souza, "Short-Term Operation Planning of Integrated Hydrothermal and Natural Gas Systems," in Power Tech, 2007 IEEE Lausanne, 2007, pp. 1410-1416. 6 M. Chaudry, N....

  7. TEC Working Group Topic Groups Rail Conference Call Summaries...

    Office of Environmental Management (EM)

    Summaries Rail Topic Group TEC Working Group Topic Groups Rail Conference Call Summaries Rail Topic Group Rail Topic Group PDF icon May 17, 2007 PDF icon January 16, 2007 PDF icon...

  8. Webtrends Archives by Fiscal Year - Topic Landing Pages | Department...

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

    topic landing pages by fiscal year. Topic Landing Pages FY10 (2.04 MB) Topic Landing Pages FY11 (2.02 MB) Topic Landing Pages FY12-FY13 (366.66 KB) More Documents & Publications ...

  9. Reactions of tungsten-titanium alloys with decomposition products from a glow UHF discharge in a tetrafluoromethane-oxygen mixture

    SciTech Connect (OSTI)

    Amirov, I.I.; Vinogradov, G.K.; Slovetskii, D.I.

    1988-07-01

    Decomposition products from tetrafluoromethane mixed with oxygen react with WTi alloy in an HF glow discharge, the extent of reaction being dependent on the atomic fluorine concentration, temperature, and surface potential. The rates of reaction with the CF/sub 4/ products are proportional to the atomic fluorine concentrations. The effective activation energies have been determined for the atomic fluorine reacting with the alloy components in various gases. The metal removal rate increases when the specimen is negative with respect to the plasma potential, which is ascribed to the surface being bombarded by positive ions or to the electric field affecting the surface reaction rates.

  10. A low-power magnetic-field-assisted plasma jet generated by dielectric-barrier discharge enhanced direct-current glow discharge at atmospheric pressure

    SciTech Connect (OSTI)

    Jiang, Weiman; Tang, Jie Wang, Yishan; Zhao, Wei; Duan, Yixiang; Research Center of Analytical Instrumentation, Sichuan University, Chengdu 610064

    2014-01-06

    A magnetic field is introduced to the dielectric-barrier discharge enhanced direct-current glow discharge for efficient plasma generation, with the discharge power of 2.7 W and total energy consumption reduced to 34% of the original. By spatially examining the emission spectra and plasma temperature, it is found that their peaks shift from edges to the center and the negative and anode glows merge into the positive column and disappear, accompanied by improvement of uniformity and chemical activity of the enlarged plasma. This lies in the enhancement of ionization in the curved and lengthened electron path and the dispersion of discharge domains.

  11. Jonathan Link, Columbia KEK Topical Conference

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

    -22, 2001 Jonathan Link, Columbia KEK Topical Conference Short Baseline Neutrino Oscillations and MiniBooNE Jonathan Link Columbia University The 5 th KEK Topical Conference - Frontiers in Flavor Physics November 20-22, 2001 November 20-22, 2001 Jonathan Link, Columbia KEK Topical Conference Outline 1. Background on Short Baseline Neutrino Oscillations * A little neutrino physics * The LSND oscillation result 2. About MiniBooNE 3. Status of MiniBooNE. Some of you may have noticed that I'll be

  12. Lithium-fluoride flashover ion source cleaned with a glow discharge and irradiated with vacuum-ultraviolet radiation

    SciTech Connect (OSTI)

    Burns, E.J.T.; Woodworth, J.R.; Bieg, K.W.; Mehlhorn, T.A.; Stygar, W.A.; Sweeney, M.A.

    1988-01-01

    We have studied methods of varying the ion species generated by a lithium-fluoride overcoated anode in a 0.5-MV magnetically insulated ion diode. We found that cleaning the anode surface with a 13.6-MHz rf glow discharge or illuminating the anode with a pulsed soft x-ray, vacuum-ultraviolet (XUV) radiation source just before the accelerator pulse significantly altered the ion species of the ion beam produced by the diode. The glow-discharge plasma removed adsorbates (carbon, hydrogen, and oxygen) from the surface of the LiF flashover source. The ions seen were lithium and hydrogen. Unfortunately, the diode impedance with a lithium-fluoride anode was high and the ion efficiency was low; however, XUV irradiation of the surface dramatically lowered the impedance by desorbing neutrals from the ion source via photon-stimulated desorption. Current densities of ten times the Child--Langmuir space-charge limit were achieved under XUV irradiation. In particular, ion currents increased by over a factor of 3 when 12 mJ/cm/sup 2/ of XUV radiation was used. However, with XUV irradiation the largest fraction of ions were fluorine, oxygen, carbon, and hydrogen, not lithium.

  13. Effect of hydrogen ratio on plasma parameters of N{sub 2}-H{sub 2} gas mixture glow discharge

    SciTech Connect (OSTI)

    El-Brulsy, R. A.; Abd Al-Halim, M. A.; Abu-Hashem, A.; Rashed, U. M.; Hassouba, M. A.

    2012-05-15

    A dc plane glow discharge in a nitrogen-hydrogen (N{sub 2}-H{sub 2}) gas mixture has been operated at discharge currents of 10 and 20 mA. The electron energy distribution function (EEDF) at different hydrogen concentrations is measured. A Maxwellian EEDF is found in the positive column region, while in both cathode fall and negative glow regions, a non-Maxwellian one is observed. Langmuir electric probes are used at different axial positions, gas pressures, and hydrogen concentrations to measure the electron temperature and plasma density. The electron temperature is found to increase with increasing H{sub 2} concentration and decrease with increasing both the axial distance from the cathode and the mixture pressure. At first, with increasing distance from the cathode, the ion density decreases, while the electron density increases; then, as the anode is further approached, they remain nearly constant. At different H{sub 2} concentrations, the electron and ion densities decrease with increasing the mixture pressure. Both the electron and ion densities slightly decrease with increasing H{sub 2} concentration.

  14. SBIR/STTR Release 2 Topics Announced-Includes Hydrogen and Fuel Cells |

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

    Department of Energy Topics Announced-Includes Hydrogen and Fuel Cells SBIR/STTR Release 2 Topics Announced-Includes Hydrogen and Fuel Cells October 31, 2014 - 12:05pm Addthis The 2015 Small Business Innovation Research and Small Business Technology Transfer (SBIR/STTR) Phase I Release 2 topics have been released and include two hydrogen and fuel cell related topics: fuel cell-battery electric hybrid trucks and in-line quality control devices for polymer electrolyte membrane (PEM) fuel

  15. TEC/WG Tribal Topic Group

    Office of Environmental Management (EM)

    TEC Tribal Topic Group Conference Call January 18, 2006 Group Chair: Jay Jones (DOE/OCRWM) Participating TEC Tribal Topic Group Members: Rob Burnside (CTUIR), Earl Easton (U.S. NRC), Kristen Ellis (DOE/CI), Ed Gonzales (ELG), Angela Hill (DOE/OCRWM), Marsha Keister (INL), Dan King (Oneida Nation), Corinne Macaluso (DOE/OCRWM), Titto Moses (CTUIR), Stanley Paytiamo (Pueblo of Acoma), Willie Preacher (Shoshone-Bannock Tribes), Cathy Reynolds (DOE/GC), Larry Stern (CVSA), Kevin Tafoya (Santa Clara

  16. Final Report DE-FG02-00ER54583: "Physics of Atmospheric Pressure Glow Discharges" and "Nanoparticle Nucleation and Dynamics in Low-Pressure Plasmas"

    SciTech Connect (OSTI)

    Uwe Kortshagen; Joachim Heberlein; Steven L. Girshick

    2009-06-01

    This project was funded over two periods of three years each, with an additional year of no-cost extension. Research in the first funding period focused on the physics of uniform atmospheric pressure glow discharges, the second funding period was devoted to the study of the dynamics of nanometer-sized particles in plasmas.

  17. TEC Working Group Topic Groups Rail Key Documents Intermodal Subgroup |

    Office of Environmental Management (EM)

    Department of Energy Intermodal Subgroup TEC Working Group Topic Groups Rail Key Documents Intermodal Subgroup Intermodal Subgroup Draft Work Plan (206.83 KB) More Documents & Publications TEC Working Group Topic Groups Rail Key Documents Radiation Monitoring Subgroup TEC Working Group Topic Groups Rail Conference Call Summaries Intermodal Subgroup TEC Working Group Topic Groups Rail Conference Call Summaries Rail Topic Group

  18. TEC Working Group Topic Groups Routing Meeting Summaries | Department of

    Office of Environmental Management (EM)

    Energy Meeting Summaries TEC Working Group Topic Groups Routing Meeting Summaries MEETING SUMMARIES Atlanta TEC Meeting, Routing Topic Group Summary (101.72 KB) More Documents & Publications TEC Meeting Summaries - January - February 2007 TEC Working Group Topic Groups Rail Meeting Summaries TEC Working Group Topic Groups Rail Conference Call Summaries Rail Topic Group

  19. Canard and mixed mode oscillations in an excitable glow discharge plasma in the presence of inhomogeneous magnetic field

    SciTech Connect (OSTI)

    Shaw, Pankaj Kumar Sekar Iyengar, A. N.

    2015-12-15

    We report on the experimental observation of canard orbit and mixed mode oscillations (MMOs) in an excitable glow discharge plasma induced by an external magnetic field perturbation using a bar magnet. At a small value of magnetic field, small amplitude quasiperiodic oscillations were excited, and with the increase in the magnetic field, large amplitude oscillations were excited. Analyzing the experimental results, it seems that the magnetic field could be playing the role of noise for such nonlinear phenomena. It is observed that the noise level increases with the increase in magnetic field strength. The experimental results have also been corroborated by a numerical simulation using a FitzHugh-Nagumo like macroscopic model derived from the basic plasma equations and phenomenology, where the noise has been included to represent the internal plasma noise. This macroscopic model shows MMO in the vicinity of the canard point when an external noise is added.

  20. OSTIblog Articles in the data Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    focus mainly on natural gas resources or solar power...stuff like that?" you think. "I ... Search on the word "solar," for example, and you will... Related Topics: data, data sets, ...

  1. OSTIblog Articles in the ScienceLab Topic | OSTI, US Dept of...

    Office of Scientific and Technical Information (OSTI)

    OSTI cannot be immune to these disruptive forces, nor would we wish it to be. Here,... Related Topics: .EDUconnections, Adopt-A-Doc, DOE Green Energy, DOE STI, journal literature, ...

  2. OSTIblog Articles in the NLMplus Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    WebLib to develop a novel search technology called semantic search. Semantic search uses semantic knowledge of... Related Topics: apps, DOE Green Energy, NLMplus, SBIRSTTR, WebLib

  3. OSTIblog Articles in the WebLib Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    WebLib to develop a novel search technology called semantic search. Semantic search uses semantic knowledge of... Related Topics: apps, DOE Green Energy, NLMplus, SBIRSTTR, WebLib

  4. OSTIblog Articles in the erff Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    of science from around the globe. Many of the databases searched through WWS.org are not well known outside... Related Topics: cern, erff, google, nasa, WorldWideScience.org (WWS)

  5. OSTIblog Articles in the documents Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Documents such as these then are of the sort that becomes the central body of scientific information... Related Topics: colleagues, documents, E-Print Network (EPN), e-prints, full ...

  6. OSTIblog Articles in the filters Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    On the Search Results page, these filters are midway down the left side. The full SciTech Connect database contains over 2.5 million citations. Filtering the... Related Topics: ...

  7. OSTIblog Articles in the subjects Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    On the Search Results page, these filters are midway down the left side. The full SciTech Connect database contains over 2.5 million citations. Filtering the... Related Topics: ...

  8. OSTIblog Articles in the plastic Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    systems that use an elastic shape-memory metal alloy as a refrigerant, and the discovery of shape-... Related Topics: fiber, In the OSTI Collections, plastic, Shape-Memory, solar

  9. OSTIblog Articles in the fiber Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    systems that use an elastic shape-memory metal alloy as a refrigerant, and the discovery of shape-... Related Topics: fiber, In the OSTI Collections, plastic, Shape-Memory, solar

  10. OSTIblog Articles in the Federal R&D Project Summaries Topic...

    Office of Scientific and Technical Information (OSTI)

    Now you can find research project summaries from the Department of Defense, NASA, and the ... Related Topics: dod, Federal R&D Project Summaries, nasa Read more... Forms of STI - pt. 3 ...

  11. OSTIblog Articles in the dod Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Now you can find research project summaries from the Department of Defense, NASA, and the ... more robust results Ability to... Related Topics: dod, Federal R&D Project Summaries, nasa

  12. OSTIblog Articles in the rss Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Science.gov webmanager Related Topics: doe, dot, fda, nist, rss, Science.gov Read more... Dynamically OSTI--Web 2.0 -- Enabling Information-Enabling Users-Enabling Acceleration by ...

  13. OSTIblog Articles in the education Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Science and technology have been and will continue to be engines of US... Related Topics: ... From the early 1960s when OSTI provided educational materials on the atom and published ...

  14. OSTIblog Articles in the Web Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    reading emails, blogs, etc. It also includes training postdocs and Ph.D. students, plus an untold number of colleague to colleague... Related Topics: knowledge, Web, world wide web

  15. OSTIblog Articles in the rss Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: doe, dot, fda, nist, rss, Science.gov Read more... Dynamically OSTI--Web ... This OSTI agility means that switching gears midstream and going with the Web 2.0 flow to ...

  16. OSTIblog Articles in the widgets Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    ... Related Topics: .EDUconnections, education, widgets Read more... Dynamically OSTI--Web 2.0 ... This OSTI agility means that switching gears midstream and going with the Web 2.0 flow to ...

  17. OSTIblog Articles in the nsf Topic | OSTI, US Dept of Energy...

    Office of Scientific and Technical Information (OSTI)

    Related Topics: dod, doe, nih, nist, nsf, research Read more... Science Depends on the Diffusion of Knowledge by Dr. Walt Warnick 05 Mar, 2009 in Personal Perspectives As Isaac ...

  18. Microsoft Word - Tribal Topic Group Summary March 06 final _3_.doc

    Office of Environmental Management (EM)

    Formatted: Position: Horizontal: Right, Relative to: Margin, Vertical: 0", Relative to: Paragraph, Wrap Around Summary TEC Tribal Topic Group Meeting Tuesday, March 14, 2006 Washington, DC Participants: Jay Jones, Department of Energy (DOE)/Office of Civilian Radioactive Waste Management (OCRWM), chaired the session. Other Topic Group members included Richard Arnold (Pahrump Paiute Tribe/Consolidated Group of Tribes and Organizations), James Baranski (NY State Emergency Management Office),

  19. OSTIblog Articles in the history of science Topic | OSTI, US...

    Office of Scientific and Technical Information (OSTI)

    history of science Topic World Wide Information: The Other Side of the Coin by Kristin ... Of course, the world's information covers numerous topics other than science and ...

  20. Events & Topics in Renewable Energy & the Environment | Photosynthetic...

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

    Events & Topics in Renewable Energy & the Environment Events & Topics in Renewable Energy & the Environment MIssouri Botanical Garden | Earthways Center - October 6th, 3:15 -...

  1. Public Perception of 13 Different Energy Topics analyzed in new...

    Open Energy Info (EERE)

    and unfavorability energy topics such as transportation, renewable technology, nuclear, clean coal, and smart grid topics. Some of the highlights of the study are as...

  2. TEC Working Group Topic Groups Security | Department of Energy

    Office of Environmental Management (EM)

    TEC Working Group Topic Groups Security The Security Topic group is comprised of regulators, law enforcement officials, labor and industry representatives and other subject matter ...

  3. Events & Topics in Renewable Energy & the Environment | Photosynthetic...

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

    Events & Topics in Renewable Energy & the Environment Events & Topics in Renewable Energy & the Environment Tyson Living Learning Center tour November 18, 2014 - 4:00pm Tyson...

  4. Events & Topics in Renewable Energy & the Environment | Photosynthetic...

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

    Events & Topics in Renewable Energy & the Environment Events & Topics in Renewable Energy & the Environment Donald Danforth Plant Science Center April 9, 2015 - 3:15pm Donald...

  5. Hot Topics Workshops | June 2016 | Photosynthetic Antenna Research Center

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

    Workshops | June 2016 Hot Topics Workshops | June 2016 A look at our workshops this past June on various topics including nuclear energy, biofuels, and renewable

  6. TEC Working Group Topic Groups Rail Meeting Summaries | Department...

    Office of Environmental Management (EM)

    TEC Working Group Topic Groups Rail Meeting Summaries MEETING SUMMARIES PDF icon Kansas City TEC Meeting, Rail Topic Group Summary - July 25, 2007 PDF icon Atlanta TEC...

  7. Hot topics in flavor physics at CDF

    SciTech Connect (OSTI)

    Jun, Soon Yung; /Carnegie Mellon U.

    2005-01-01

    Hot topics in flavor physics at CDF are reviewed. Selected results of top, beauty, charm physics and exotic states in about 200 pb{sup -1} data collected by the CDF II detector in p{bar p} collisions at {radical}s = 1.96 TeV at the Fermilab Tevatron are presented.

  8. Quark-gluon plasma (Selected Topics)

    SciTech Connect (OSTI)

    Zakharov, V. I.

    2012-09-15

    Introductory lectures to the theory of (strongly interacting) quark-gluon plasma given at the Winter School of Physics of ITEP (Moscow, February 2010). We emphasize theoretical issues highlighted by the discovery of the low viscosity of the plasma. The topics include relativistic hydrodynamics, manifestations of chiral anomaly in hydrodynamics, superfluidity, relativistic superfluid hydrodynamics, effective stringy scalars, holographic models of Yang-Mills theories.

  9. More About "Topic A" and "Topic B" Awards | Department of Energy

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

    More About "Topic A" and "Topic B" Awards More About "Topic A" and "Topic B" Awards The awards pursuant to the Department of Energy's Interconnection-wide Transmission Planning Initiative cover two broad topics. "Topic A" covers Interconnection-Level Analysis and Planning. "Topic B" covers Cooperation Among States on Electric Resource Planning and Priorities, where the states will develop input to the Topic A analyses and perform other

  10. Innovative Topics for Advanced Biofuels | Department of Energy

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

    Innovative Topics for Advanced Biofuels Innovative Topics for Advanced Biofuels PNNL report-out presentation at the CTAB webinar on innovative topics for advanced biofuels. ctab_webinar_innovative_topics.pdf (1.55 MB) More Documents & Publications Cross-cutting Technologies for Advanced Biofuels Conversion Technologies for Advanced Biofuels - Carbohydrates Production Conversion Technologies for Advanced Biofuels - Bio-Oil Upgrading