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Note: This page contains sample records for the topic "high-intensity discharge hid" from the National Library of EnergyBeta (NLEBeta).
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1

High-Intensity Discharge Lighting Basics | Department of Energy  

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

High-Intensity Discharge Lighting Basics High-Intensity Discharge Lighting Basics High-Intensity Discharge Lighting Basics August 15, 2013 - 5:59pm Addthis High-intensity discharge (HID) lighting provides the highest efficacy and longest service life of any lighting type. It can save 75%-90% of lighting energy when it replaces incandescent lighting. Illustration of a high-intensity discharge (HID) lIllustration amp. The lamp is a tall cylindrical shape, and a cutout of the outer tube shows the materials inside. A long, thin cylinder called the arc tube runs through the lamp between two electrodes. The space around the arc tube is labeled as a vacuum. In a high-intensity discharge lamp, electricity arcs between two electrodes, creating an intensely bright light. Mercury, sodium, or metal halide gas

2

High intensity discharge device containing oxytrihalides  

DOE Patents (OSTI)

A fill composition for a high intensity discharge device including mercury, niobium oxytrihalide, and a molecular stabilization agent is provided. The molar ratio of niobium oxytrihalide to the molecular stabilization agent in the fill is in the range of from about 5:1 to about 7.5:1. Niobium oxytrihalide is present in the fill in sufficient amount to produce, by dissociation in the discharge, atomic niobium, niobium oxide, NbO, and niobium dioxide, NbO[sub 2], with the molar ratio of niobium-containing vapor species to mercury in the fill being in the range of from about 0.01:1 to about 0.50:1; and mercury pressure of about 1 to about 50 atmospheres at lamp operating temperature. There is also provided a high intensity discharge device comprising a sealed light-transmissive arc tube; the arc tube including the above-described fill; and an energizing means for producing an electric discharge within the arc tube. 7 figs.

Lapatovich, W.P.; Keeffe, W.M.; Liebermann, R.W.; Maya, J.

1987-06-09T23:59:59.000Z

3

High intensity discharge device containing oxytrihalides  

DOE Patents (OSTI)

A fill composition for a high intensity discharge device including mercury, niobium oxytrihalide, and a molecular stabilization agent is provided. The molar ratio of niobium oxytrihalide to the molecular stabilization agent in the fill is in the range of from about 5:1 to about 7.5:1. Niobium oxytrihalide is present in the fill in sufficient amount to produce, by dissociation in the discharge, atomic niobium, niobium oxide, NbO, and niobium dioxide, NbO.sub.2, with the molar ratio of niobium-containing vapor species to mercury in the fill being in the range of from about 0.01:1 to about 0.50:1; and mercury pressure of about 1 to about 50 atmospheres at lamp operating temperature. There is also provided a high intensity discharge device comprising a sealed light-transmissive arc tube; the arc tube including the above-described fill; and an energizing means for producing an electric discharge within the arc tube.

Lapatovich, Walter P. (Hudson, MA); Keeffe, William M. (Rockport, MA); Liebermann, Richard W. (Danvers, MA); Maya, Jakob (Brookline, MA)

1987-01-01T23:59:59.000Z

4

2014-05-05 Issuance: Test Procedures for High-Intensity Discharge...  

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

Test Procedures for High-Intensity Discharge Lamps; Supplemental Notice of Proposed Rulemaking 2014-05-05 Issuance: Test Procedures for High-Intensity Discharge Lamps; Supplemental...

5

A SPICE Compatible Model of High Intensity Discharge Lamps  

E-Print Network (OSTI)

from the arc's * Corresponding author behavior of HID lamps. This model are derived from the arc-linear resistance of the lamp, is the global specific conductance of the plasma, V is the volume of the plasma, L is the length of plasma and S is the cross section. ~ Vin G1 Lamp Model Ballast v(lamp) i(lamp) Analytical

6

Performance of "Ultra-High" Efficient Electronic Ballast for HID Lamps  

E-Print Network (OSTI)

. Index Terms--Electronic ballast, HID lamps, resonant inverter, power loss modeling, Silicon Carbide (Si of >95% for the ballast. Diode bridge rectifier EMI filter Resonant Inverter Power Factor Correction 75423, USA Abstract--A new electronic ballast circuit for High Intensity Discharge (HID) lamps

Tolbert, Leon M.

7

Max Tech and Beyond: High-Intensity Discharge Lamps  

E-Print Network (OSTI)

formation of the electric discharge arc and the metals emitdefined as electric discharge lamps in which the arc tubelamp - an electric discharge lamp in which the arc tube wall

Scholand, Michael

2012-01-01T23:59:59.000Z

8

HID Laboratories Inc | Open Energy Information  

Open Energy Info (EERE)

HID Laboratories Inc HID Laboratories Inc Jump to: navigation, search Name HID Laboratories, Inc. Place Menlo Park, California Zip 94025 Product HID Laboratories develops commercial-grade, high intensity lighting products that manage lighting demand and reduce energy use. References HID Laboratories, Inc.[1] LinkedIn Connections CrunchBase Profile No CrunchBase profile. Create one now! This article is a stub. You can help OpenEI by expanding it. HID Laboratories, Inc. is a company located in Menlo Park, California . References ↑ "HID Laboratories, Inc." Retrieved from "http://en.openei.org/w/index.php?title=HID_Laboratories_Inc&oldid=346520" Categories: Clean Energy Organizations Companies Organizations Stubs What links here Related changes Special pages

9

Contribution to the numerical study of turbulence in high intensity discharge lamps  

SciTech Connect

We present in this paper a comparison between results obtained with a laminar and turbulent models for high-pressure mercury arc. The two models are based on the resolution of bidimensional time-dependent equations by a semi-implicit finite-element code. The numerical computation of turbulent model is solved with large eddy simulation model; this approach takes into account the various scales of turbulence by a filtering method on each scale. The results show the quantitative influence of turbulence on the flow fields and also the difference between laminar and turbulent effects on the dynamic thermal behaviour and on the characteristics of the discharge.

Kaziz, S.; Ben Ahmed, R.; Helali, H.; Gazzah, H.; Charrada, K. [Unite d'Etude des Milieux Ionises et Reactifs, IPEIM, 5019 route de Kairouan Monastir (Tunisia)

2011-07-15T23:59:59.000Z

10

2014-05-05 Issuance: Test Procedures for High-Intensity Discharge Lamps; Supplemental Notice of Proposed Rulemaking  

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

This document is a pre-publication Federal Register supplemental notice of proposed rulemaking regarding test procedures for high-intesity discharge lamps, as issued by the Deputy Assistant Secretary for Energy Efficiency on May 5, 2014. Though it is not intended or expected, should any discrepancy occur between the document posted here and the document published in the Federal Register, the Federal Register publication controls. This document is being made available through the Internet solely as a means to facilitate the public's access to this document.

11

,,,"Incandescent","Standard Fluorescent","Compact Fluorescent","High-Intensity Discharge","Halogen"  

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

B39. Lighting Equipment, Floorspace, 1999" B39. Lighting Equipment, Floorspace, 1999" ,"Total Floorspace (million square feet)" ,"All Buildings","All Lit Buildings","Lighting Equipment (more than one may apply)" ,,,"Incandescent","Standard Fluorescent","Compact Fluorescent","High-Intensity Discharge","Halogen" "All Buildings ................",67338,64321,38156,60344,20666,19223,17926 "Building Floorspace" "(Square Feet)" "1,001 to 5,000 ...............",6774,5859,2946,5154,738,245,600 "5,001 to 10,000 ..............",8238,7464,4047,6722,1108,663,991 "10,001 to 25,000 .............",11153,10393,6055,9815,1759,1701,1996 "25,001 to 50,000 .............",9311,9053,5004,8344,2296,2224,1611

12

New and Underutilized Technology: HID Electronic/Dimming Ballasts |  

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

HID Electronic/Dimming Ballasts HID Electronic/Dimming Ballasts New and Underutilized Technology: HID Electronic/Dimming Ballasts October 7, 2013 - 8:51am Addthis The following information outlines key deployment considerations for HID electronic/dimming ballasts within the Federal sector. Benefits Most HID electronic/dimming ballasts, typically metal halide or high-pressure sodium lamps, are currently driven by magnetic ballasts. Several manufacturers now offer electronic ballasts for these lamps, which promise better efficiency, longer lamp life, and faster startup and re-strike. Application HID electronic/dimming ballasts are applicable in exterior/security lighting and facilities with high bay areas. Key Factors for Deployment Federal agencies must evaluate relative costs, benefits, and application of

13

Lighting Group: Sources and Ballasts: HID Lighting Systems  

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

Ballasts and Controls for HID Lighting Ballasts and Controls for HID Lighting Systems Evaluation of Electronic Ballasts and Related Controls for HID Lighting Systems Objective HID ballast The goal of this project is to evaluate the potential of electronic ballasts and related controls for HID lighting systems to improve the efficiency of current technology. The specific objectives of this project are to: Test, analyze and determine the potential of electronic ballasts for HID lighting systems in cooperation with manufacturers as an emerging energy efficient technology to reduce lighting loads in commercial, industrial and municipal applications. Identify control strategies to further improve the energy efficiency of these systems with a municipal partner. Provide appropriate recommendations for incorporating these technologies into current state codes and regulations.

14

High intensity femtosecond enhancement cavities  

E-Print Network (OSTI)

To produce extreme ultraviolet radiation via high harmonic generation (HHG) in rare gases, light intensities in excess of 1014 W/cm 2 are required. Usually such high intensity are obtained by parametric amplification of ...

Abram, Gilberto

2009-01-01T23:59:59.000Z

15

T-547: Microsoft Windows Human Interface Device (HID) Vulnerability |  

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

547: Microsoft Windows Human Interface Device (HID) Vulnerability 547: Microsoft Windows Human Interface Device (HID) Vulnerability T-547: Microsoft Windows Human Interface Device (HID) Vulnerability February 1, 2011 - 3:20am Addthis PROBLEM Microsoft Windows Human Interface Device (HID) Vulnerability. PLATFORM: Microsoft 2003 SP2, Vista SP2, 2008 SP2, XP SP3, 7; and prior service packs ABSTRACT: Microsoft Windows does not properly warn the user before enabling additional Human Interface Device (HID) functionality over USB, which allows user-assisted attackers to execute arbitrary programs via crafted USB data, as demonstrated by keyboard and mouse data sent by malware on a Smartphone that the user connected to the computer. reference LINKS: Security Lab: Reference CVE-2011-0638 CVE Details: Reference CVE-2011-0638 Mitre Reference: CVE-2011-0638

16

Max Tech and Beyond: High-Intensity Discharge Lamps  

E-Print Network (OSTI)

demonstration (like street lights) and commercialization andthe dominant light source for street and roadway lighting,has been a popular light source for street lighting because

Scholand, Michael

2012-01-01T23:59:59.000Z

17

Max Tech and Beyond: High-Intensity Discharge Lamps  

E-Print Network (OSTI)

of color compared with the incandescent reference source isin this report. Standard Incandescent Halogen Low-Pressure:value equivalent to an incandescent filament lamp. Taking

Scholand, Michael

2012-01-01T23:59:59.000Z

18

GRR/Section 14-HI-d - Section 401 Water Quality Certification | Open Energy  

Open Energy Info (EERE)

HI-d - Section 401 Water Quality Certification HI-d - Section 401 Water Quality Certification < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 14-HI-d - Section 401 Water Quality Certification 14HID - Section401WaterQualityCertification (1).pdf Click to View Fullscreen Contact Agencies Hawaii Department of Health Clean Water Branch United States Environmental Protection Agency Regulations & Policies Clean Water Act (33 U.S.C. 1251) Section 401 Hawaii Administrative Rules Title 11, Chapter 54 Triggers None specified Click "Edit With Form" above to add content 14HID - Section401WaterQualityCertification (1).pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range.

19

Future High-Intensity Proton Accelerators  

E-Print Network (OSTI)

This paper provides an overview of currently planned high-intensity proton accelerators. While for high energies (>10GeV) synchrotrons remain the preferred tools to produce high-intensity beams, recent years have seen an impressive development of linac-based lower-energy (intensity proton drivers for spallation sources, accelerator driven systems (ADS), production of Radioactive Ion Beams (RIB) and various neutrino applications (beta-beam, superbeam, neutrino factory). This paper discusses the optimum machine types for the various beam requirements and uses a range of projects, which are likely to be realised within the coming decade, to illustrate the different approaches to reach high average beam power with the application-specific time structure. Only machines with a beam power above 100kW are considered.

Gerigk, F

2007-01-01T23:59:59.000Z

20

GRR/Section 18-HI-d - Variance from Pollution Control | Open Energy  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » GRR/Section 18-HI-d - Variance from Pollution Control < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 18-HI-d - Variance from Pollution Control 18HID - VarianceFromPollutionControl (4).pdf Click to View Fullscreen Contact Agencies Hawaii Department of Health Clean Water Branch Regulations & Policies Wastewater Systems Triggers None specified Click "Edit With Form" above to add content 18HID - VarianceFromPollutionControl (4).pdf Error creating thumbnail: Page number not in range.

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


21

High intensity specular reflectometry - first experiments  

E-Print Network (OSTI)

Selene is the attempt to implement a new scheme for high-intensity specular reflectometry. Instead of a highly collimated beam one uses a convergent beam covering a large angular range. The angular resolution is then performed by a position-sensitive detector. Off-specular scattering in this set-up leads to some background, but for screening of wide parameter ranges (e.g. temperature, electric and magnetic fields) the intensity gain of at least one order of magnitude is essential. If necessary, the high precession measurements (even with off-specular components) then are performed with the conventional set-up. The heart of this new set-up is an elliptically focusing guide element of 2\\,m length. Though this guide is optimised for the use on the TOF reflectometer Amor at SINQ, it can be used as stand-alone device to check the possible application also for other neutron scattering techniques. The first measurements on AMOR confirmed the general concept and the various operation modes. A draw-back occurred due t...

Stahn, J; Panzner, T

2011-01-01T23:59:59.000Z

22

GRR/Section 3-HI-d - Use and Occupancy Permit | Open Energy Information  

Open Energy Info (EERE)

GRR/Section 3-HI-d - Use and Occupancy Permit GRR/Section 3-HI-d - Use and Occupancy Permit < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 3-HI-d - Use and Occupancy Permit 03HIDUseAndOccupancyPermit.pdf Click to View Fullscreen Contact Agencies Hawaii Department of Transportation Highways Division Regulations & Policies Hawaii Administrative Rules Title 19, Chapter 102 Hawaii Administrative Rules Title 19, Chapter 105 Triggers None specified Click "Edit With Form" above to add content 03HIDUseAndOccupancyPermit.pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Flowchart Narrative A developer needs a Use and Occupancy Permit from the Hawaii Department of

23

Appliances and Commercial Equipment Standards  

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

High-Intensity Discharge Lamps High-Intensity Discharge Lamps Sign up for e-mail updates on regulations for this and other products There are currently no energy conservation standards for high-intensity discharge (HID) lamps. HID lamps are electric discharge lamps and include high-pressure sodium, mercury vapor, and metal halide lamps. HID lamps require an HID ballast to start and regulate electric current flow through the lamp. HID lamps are used in street and roadway lighting, area lighting such as for parking lots and plazas, industrial and commercial building interior lighting, security lighting for commercial, industrial, and residential spaces, and landscape lighting. The Standards and Test Procedures for this product are related to Rulemaking for High Intensity Discharge Lamps Energy Conservation Standard and Rulemaking for High Intensity Discharge Lamps Test Procedures.

24

High intensity x-ray source using liquid gallium target  

DOE Patents (OSTI)

A high intensity x-ray source that uses a flowing stream of liquid gallium as a target with the electron beam impinging directly on the liquid metal.

Smither, Robert K. (Hinsdale, IL); Knapp, Gordon S. (Cupertino, CA); Westbrook, Edwin M. (Chicago, IL); Forster, George A. (Westmont, IL)

1990-01-01T23:59:59.000Z

25

MATERIAL STUDIES FOR PULSED HIGH-INTENSITY PROTON BEAM TARGETS  

E-Print Network (OSTI)

PLAN MATERIAL STUDIES FOR PULSED HIGH-INTENSITY PROTON BEAM TARGETS Nicholas Simos, Harold Kirk and removal from the target system ·Target thermo-mechanical response from energetic, high intensity protons are: ·Inconel-718 ·Aluminum-3000 ·Havar ·Ti-6Al-6V ·Graphite (ATJ) ·Carbon-Carbon ·SuperInvar #12

McDonald, Kirk

26

GRR/Section 6-HI-d - Other Overview | Open Energy Information  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » GRR/Section 6-HI-d - Other Overview < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 6-HI-d - Other Overview 06HIDOtherOverview.pdf Click to View Fullscreen Triggers None specified Click "Edit With Form" above to add content 06HIDOtherOverview.pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Flowchart Narrative Add Text Print PDF Retrieved from "http://en.openei.org/w/index.php?title=GRR/Section_6-HI-d_-_Other_Overview&oldid=685852"

27

Drift tube suspension for high intensity linear accelerators  

DOE Patents (OSTI)

The disclosure relates to a drift tube suspension for high intensity linear accelerators. The system comprises a series of box-sections girders independently adjustably mounted on a linear accelerator. A plurality of drift tube holding stems are individually adjustably mounted on each girder.

Liska, Donald J. (Los Alamos, NM); Schamaun, Roger G. (Los Alamos, NM); Clark, Donald C. (Los Alamos, NM); Potter, R. Christopher (Los Alamos, NM); Frank, Joseph A. (Los Alamos, NM)

1982-01-01T23:59:59.000Z

28

Drift tube suspension for high intensity linear accelerators  

DOE Patents (OSTI)

The disclosure relates to a drift tube suspension for high intensity linear accelerators. The system comprises a series of box-sections girders independently adjustably mounted on a linear accelerator. A plurality of drift tube holding stems are individually adjustably mounted on each girder.

Liska, D.J.; Schamaun, R.G.; Clark, D.C.; Potter, R.C.; Frank, J.A.

1980-03-11T23:59:59.000Z

29

High-power, high-intensity laser propagation and interactions  

SciTech Connect

This paper presents overviews of a number of processes and applications associated with high-power, high-intensity lasers, and their interactions. These processes and applications include: free electron lasers, backward Raman amplification, atmospheric propagation of laser pulses, laser driven acceleration, atmospheric lasing, and remote detection of radioactivity. The interrelated physical mechanisms in the various processes are discussed.

Sprangle, Phillip [Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375 (United States); Electrical and Computer Engineering and Physics, University of Maryland, College Park, Maryland 20740 (United States); Hafizi, Bahman [Plasma Physics Division, Naval Research Laboratory, Washington, DC 20375 (United States)

2014-05-15T23:59:59.000Z

30

Transverse spreading of electrons in high-intensity laser fields  

E-Print Network (OSTI)

We show that for collisions of electrons with a high-intensity laser, discrete photon emissions introduce a transverse beam spread which is distinct from that due to classical (or beam shape) effects. Via numerical simulations, we show that this quantum induced transverse momentum gain of the electron is manifest in collisions with a realistic laser pulse of intensity within reach of current technology, and we propose it as a measurable signature of strong-field quantum electrodynamics.

D. G. Green; C. N. Harvey

2014-03-18T23:59:59.000Z

31

NUMERICAL METHODS FOR THE SIMULATION OF HIGH INTENSITY HADRON SYNCHROTRONS.  

SciTech Connect

Numerical algorithms for PIC simulation of beam dynamics in a high intensity synchrotron on a parallel computer are presented. We introduce numerical solvers of the Laplace-Poisson equation in the presence of walls, and algorithms to compute tunes and twiss functions in the presence of space charge forces. The working code for the simulation here presented is SIMBAD, that can be run as stand alone or as part of the UAL (Unified Accelerator Libraries) package.

LUCCIO, A.; D'IMPERIO, N.; MALITSKY, N.

2005-09-12T23:59:59.000Z

32

HELIOS: A high intensity chopper spectrometer at LANSCE  

SciTech Connect

A proposal to construct a high intensity chopper spectrometer at LANSCE as part of the SPSS upgrade project is discussed. HELIOS will be optimized for science requiring high sensitivity neutron spectroscopy. This includes studies of phonon density of states in small polycrystalline samples, magnetic excitations in quantum magnets and highly correlated electron systems, as well as parametric studies (as a function of pressure, temperature, or magnetic field) of S(Q,{omega}). By employing a compact design together with the use of supermirror guide in the incident flight path the neutron flux at HELIOS will be significantly higher than any other comparable instrument now operating.

Mason, T.E. [Oak Ridge National Lab., TN (United States); Broholm, C. [Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Physics and Astronomy; Fultz, B. [California Inst. of Tech., Pasadena, CA (United States). Dept. of Materials Science] [and others

1998-12-31T23:59:59.000Z

33

High intensity line source for x-ray spectrometer calibration  

SciTech Connect

A high intensity electron-impact x-ray source using a one-dimensional Pierce lens has been built for the purpose of calibrating a bent crystal x-ray spectrometer. This source focuses up to 100 mA of 20-keV electrons to a line on a liquid-cooled anode. The line (which can serve as a virtual slit for the spectrometer) measures approximately 800 ..mu.. x 2 cm. The source is portable and therefore adaptable to numerous types of spectrometer applications. One particular application, the calibration of a high resolution (r = 10/sup 4/) time-resolved cyrstal spectrometer, will be discussed in detail.

Thoe, R.S.

1986-06-01T23:59:59.000Z

34

GRR/Section 6-HI-d - Oversize and/or Overweight Vehicles and Loads Permit |  

Open Energy Info (EERE)

form form View source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit with form History Facebook icon Twitter icon » GRR/Section 6-HI-d - Oversize and/or Overweight Vehicles and Loads Permit < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections or Overweight Vehicles and Loads Permit Flowchart Narrative Content Here Print PDF Retrieved from "http://en.openei.org/w/index.php?title=GRR/Section_6-HI-d_-_Oversize_and/or_Overweight_Vehicles_and_Loads_Permit&oldid=685849" Categories: Regulatory Roadmap Overview Sections Geothermal Regulatory Roadmap Sections What links here Related changes Special pages

35

Injection and capture simulations for a high intensity proton synchrotron  

SciTech Connect

The injection and capture processes in a high intensity, rapid cycling, proton synchrotron are simulated by numerical integration. The equations of motion suitable for rapid numerical simulation are derived so as to maintain symplecticity and second-order accuracy. By careful bookkeeping, the authors can, for each particle that is lost, determine its initial phase space coordinates. They use this information as a guide for different injection schemes and rf voltage programming, so that a minimum of particle losses and dilution are attained. A fairly accurate estimate of the space charge fields is required, as they influence considerably the particle distribution and reduce the capture efficiency. Since the beam is represented by a relatively coarse ensemble of macro particles, the authors study several methods of reducing the statistical fluctuations while retaining the fine structure (high intensity modulations) of the beam distribution. A pre-smoothing of the data is accomplished by the cloud-in-cell method. The program is checked by making sure that it gives correct answers in the absence of space charge, and that it reproduces the negative mass instability properly. Results of simulations for stationary distributions are compared to their analytical predictions. The capture efficiency for the rapid-cycling synchrotron is analyzed with respect to variations in the injected beam energy spread, bunch length, and rf programming.

Cho, Y.; Lessner, E. [Argonne National Lab., IL (United States); Symon, K. [Argonne National Lab., IL (United States)]|[Univ. of Wisconsin, Madison, WI (United States). Dept. of Physics

1994-07-01T23:59:59.000Z

36

The impact of modern headlamps on the design of sag vertical curves  

E-Print Network (OSTI)

to the lens. The housing serves as a reflector and lens, and is made of plastic. These lamps may be comprised of different light emitting diode?s (LEDs), high intensity discharge (HID) lamps, and halogen lamps. Halogen headlamps are further comprised... on. HID lamps produce more light compared to halogen lamps (22). Also, HID lamps have a sharper horizontal cut-off beam pattern further reducing the portion of lighted highway on sag curves (25). Light emitting diode is another headlamp...

Gogula, Madhuri

2006-08-16T23:59:59.000Z

37

190 IEEE TRANSACTIONS ON PLASMA SCIENCE, VOL. 30, NO. 1, FEBRUARY 2002 Gap Closure in a Cold Metal Halide Lamp  

E-Print Network (OSTI)

lamp has been investigated using a two-dimensional, plasma transport model. Im- ages are presented- charge devices, lighting, plasma applications. METAL halide high-intensity-discharge (HID) lamps op- erate as high-pressure thermal arcs [1]. The cold fills of HID lamps are typically 50­100 torr of a rare

Kushner, Mark

38

Metal reflectivity under high?intensity optical radiation  

Science Journals Connector (OSTI)

Single high?intensity (106?109 W/cm2) pulses of 1.06?? radiation emitted from a Q?switched Nd : YAG laser have been used to study reflectivity behavior of single?crystal copper and tantalum samples. Metalreflectivity during irradiation undergoes a significant drop to values much lower than can be attributed to high?temperature effects. This reflectivity drop under high radiation intensity has two characteristic features. First if vaporization is avoided then during the rising portion of the laser pulse the reflectivity drops continuously until it reaches a constant low value. For copper this occurs at an intensity of 3108 W/cm2 and has a reflectivity value of ?0.64. The corresponding values for tantalum are I?2.5107 W/cm2 and R?0.41. For still higher intensities a further drop in reflectivity beyond the plateau region is observed. This drop in reflectivity is always accompanied by heavy melting and followed by some vaporization. As suggested by Prokhorov e t a l. this further drop in reflectivity could be associated with dielectriclike behavior of the molten zone.

T. E. Zavecz; M. A. Saifi; M. Notis

1975-01-01T23:59:59.000Z

39

Improved Heat Transfer and Performance of High Intensity Combustion Systems for Reformer Furnace Applications  

E-Print Network (OSTI)

of the above premise. The application of vortex stabilized high intensity burners for reformer furnaces in the petrochemical industry is then reviewed and emphasized....

Williams, F. D. M.; Kondratas, H. M.

1983-01-01T23:59:59.000Z

40

Appliances and Commercial Equipment Standards  

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

High Intensity Discharge Lamps Test Procedures High Intensity Discharge Lamps Test Procedures Sign up for e-mail updates on regulations for this and other products High-intensity discharge (HID) lamps include mercury vapor (MV), metal halide (MH), and high-pressure sodium (HPS) lamps. The Department of Energy (DOE) is establishing test procedures for HID lamps. This rulemaking is mandated by the Energy Policy and Conservation Act (EPCA). ( 42 U.S.C. 6291-6309) This Rulemaking is related to the High-Intensity Discharge Lamps Standard and Test Procedure. Recent Updates | Public Meeting Information | Submitting Public Comments | Milestones and Documents | Related Rulemakings | Statutory Authority | Contact Information Recent Updates DOE published a notice of proposed rulemaking regarding test procedures for HID lamps. 76 FR 77914 (Dec. 15, 2011).

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


41

INVESTIGATION OF THERAPY IMPROVEMENT USING REAL-TIME PHOTOACOUSTIC IMAGING GUIDED HIGH INTENSITY FOCUSED ULTRASOUND  

E-Print Network (OSTI)

There are a lot of risks in cancer treatment by invasive surgery, such as bleeding, wound infection, and long recovery time, etc. Therefore, there is great need for minimally- or non-invasive treatment. High intensity ...

Cui, Huizhong

2013-05-31T23:59:59.000Z

42

The effects of high intensity continuous auditory stimulation on the perception of visual display information  

E-Print Network (OSTI)

THE EFFECTS OF HIGH INTENSITY CONTINUOUS AUDITORY STIMULATION ON THE PERCEPTION OF VISUAL DISPLAY INFORMATION A Thesis by WILLIAM HAROLD PERSKY Submitted to the Graduate College of Texas AS M University in partial fulfillment... of the requirement for the degree of MASTER OF SCIENCE May 1972 Major Subject: Industrial Hygiene THE EFFECTS OF HIGH INTENSITY CONTINUOUS AUDITORY STIMULATION ON THE PERCEPTION OF VISUAL DISPLAY INFORMATION A Thesis by WILLIAM HAROLD PERSKY Approved...

Persky, William Harold

1972-01-01T23:59:59.000Z

43

Project of Rotating Carbon High-Power Neutron Target. Research of Graphite Properties for Production of High Intensity Neutron Source  

E-Print Network (OSTI)

Project of Rotating Carbon High-Power Neutron Target. Research of Graphite Properties for Production of High Intensity Neutron Source

Gubin, K V; Bak, P A; Kot, N K; Logatchev, P V

2001-01-01T23:59:59.000Z

44

Laser-Energy Transfer and Enhancement of Plasma Waves and Electron Beams by Interfering High-Intensity Laser Pulses  

E-Print Network (OSTI)

Laser-Energy Transfer and Enhancement of Plasma Waves and Electron Beams by Interfering High-Intensity) The effects of interference due to crossed laser beams were studied experimentally in the high- intensity regime. Two ultrashort (400 fs), high-intensity (4 1017 and 1:6 1018 W=cm2) and 1 m wavelength laser

Umstadter, Donald

45

Costbenefit analysis of retrofit of high-intensity discharge factory lighting with energy-saving alternatives  

Science Journals Connector (OSTI)

The average labor costs for an electrician and an electricians helper were taken from the 2010 MEANS Electrical Cost Data handbook. These costs were given as $49.00/h for an electrician and $31.60/h for an electrician

Daniel J. Preston; Keith A. Woodbury

2013-05-01T23:59:59.000Z

46

Experimental Observation of Electrons Accelerated in Vacuum to Relativistic Energies by a High-Intensity Laser  

Science Journals Connector (OSTI)

Free electrons have been accelerated in vacuum to MeV energies by a high-intensity subpicosecond laser pulse ( 1019 W/cm2, 300 fs). The experimental data are in good agreement with the relativistic motion of electrons in a spatially and temporally finite electromagnetic field, both in terms of maximum energy and scattering angle.

G. Malka; E. Lefebvre; J. L. Miquel

1997-04-28T23:59:59.000Z

47

MATERIAL R&D FOR HIGH-INTENSITY PROTON BEAM PROGRESS REPORT  

E-Print Network (OSTI)

MATERIAL R&D FOR HIGH-INTENSITY PROTON BEAM TARGETS PROGRESS REPORT Nicholas Simos, BNL January 4 strength, very low thermal expansion or high ductility #12;Experimentation with Graphite & Carbon-Carbon Targets (BNL E951) #12;Graphite vs. Carbon-Carbon ­ A Clear Choice ..... really? BNL E951 Target

McDonald, Kirk

48

Third harmonic order imaging as a focal spot diagnostic for high intensity laser-solid interactions  

E-Print Network (OSTI)

intensity inter- actions, i.e., fast ignition fusion, laser based ion acceleration etc., where fluctuationsThird harmonic order imaging as a focal spot diagnostic for high intensity laser-solid interactions, Glasgow, UK 4 Central Laser Facility, STFC Rutherford Appleton Laboratory. Chilton, Didcot, Didcot, UK 5

Strathclyde, University of

49

SOLVING BY PARALLEL COMPUTATION THE POISSON PROBLEM FOR HIGH INTENSITY BEAMS IN CIRCULAR ACCELERATORS.  

SciTech Connect

Simulation of high intensity accelerators leads to the solution of the Poisson Equation, to calculate space charge forces in the presence of acceleration chamber walls. We reduced the problem to ''two-and-a-half'' dimensions for long particle bunches, characteristic of large circular accelerators, and applied the results to the tracking code Orbit.

LUCCIO,A.U.; DIMPERIO,N.L.; SAMULYAK,R.; BEEB-WANG,J.

2001-06-18T23:59:59.000Z

50

Target Material Irradiation Studies for High-Intensity Accelerator Beams , H. Ludewig1  

E-Print Network (OSTI)

, an intensive search has been under way for both "smart" target designs and target materials that exhibit and "smart" materials have recently become available to serve the needs of special industries and someTarget Material Irradiation Studies for High-Intensity Accelerator Beams N. Simos1* , H. Kirk1 , H

McDonald, Kirk

51

Electron Cloud induced instabilities in the Fermilab Main Injector (MI) for the High Intensity Neutrino Source (HINS) project  

E-Print Network (OSTI)

Fermilab Main Injector (MI) for the High Intensity Neutrinofor the Fermilab maininjector (MI) show the existence of amitance growth. The Fermilab MI is being considered for an

Sonnad, Kiran G.; Furman, Miguel A.; Vay, Jean-Luc; Venturini, Marco; Celata, Christine; Grote, David

2008-01-01T23:59:59.000Z

52

HIGH INTENSITY LINAC DRIVER FOR THE SPIRAL-2 PROJECT : DESIGN OF SUPERCONDUCTING 88 MHZ QUARTER WAVE  

E-Print Network (OSTI)

HIGH INTENSITY LINAC DRIVER FOR THE SPIRAL-2 PROJECT : DESIGN OF SUPERCONDUCTING 88 MHZ QUARTER to the required energy. · Capability to accelerate ion beams of q/A=1/6 (up to 1 mA) in the future. The initial Abstract A superconducting linac driver, delivering deuterons with an energy up to 40 MeV (5 mA) and heavy

Paris-Sud XI, Université de

53

A High Intensity Linear e+ e- Collider Facility at Low Energy  

E-Print Network (OSTI)

I discuss a proposal for a high intensity $e^+e^-$ linear collider operated at low center of mass energies $\\sqrt{s}intensity beams. Such a facility would provide high statistics samples of (charmed) vector mesons and would permit searches for LFV with unprecedented precision in decays of $\\tau$ leptons and mesons. Implications on the design of the linear accelerator are discussed together with requirements to achieve luminosities of $10^{35}$ cm$^{-2}$s$^{-1}$ or more.

A. Schoning

2006-10-23T23:59:59.000Z

54

ISSUANCE 2015-01-26: Energy Conservation Program: Energy Conservation Standards for High-Intensity Lamps, Notice to Reopen Comment Period  

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

Energy Conservation Program: Energy Conservation Standards for High-Intensity Lamps, Notice to Reopen Comment Period

55

Appliances and Commercial Equipment Standards  

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

High-Intensity Discharge Lamps Energy Conservation Standard High-Intensity Discharge Lamps Energy Conservation Standard Sign up for e-mail updates on regulations for this and other products High-intensity discharge (HID) lamps include mercury vapor (MV), metal halide (MH), and high-pressure sodium (HPS) lamps. The Department of Energy (DOE) is considering establishing energy conservation standards for certain HID lamps. This rulemaking is mandated by the Energy Policy and Conservation Act (EPCA). (42 USC 6311-6317) Recent Updates | Public Meeting Information | Submitting Public Comments | Milestones and Documents | Related Rulemakings | Statutory Authority | Contact Information Recent Updates DOE published a notice of public meeting and availability of interim technical support document regarding energy conservation standards for high-intensity discharge lamps. 78 FR 13566 (February 28, 2013).

56

Observations of the filamentation of high-intensity laser-produced electron beams  

SciTech Connect

Filamented electron beams have been observed to be emitted from the rear of thin solid targets irradiated by a high-intensity short-pulse laser when there is low-density plasma present at the back of the target. These observations are consistent with a laser-generated beam of relativistic electrons propagating through the target, which is subsequently fragmented by a Weibel-like instability in the low-density plasma at the rear. These measurements are in agreement with particle-in-cell simulations and theory, since the filamentation instability is predicted to be dramatically enhanced when the electron beam density approaches that of the background plasma.

Wei, M.S.; Beg, F.N.; Dangor, A.E.; Gopal, A.; Tatarakis, M.; Krushelnick, K. [Blackett Laboratory, Imperial College London SW7 2BZ (United Kingdom); Clark, E.L.; Evans, R.G. [Blackett Laboratory, Imperial College London SW7 2BZ (United Kingdom); Plasma Physics Department, AWE plc, Aldermaston, Reading RG7 4PR (United Kingdom); Ledingham, K.W.D. [Department of Physics, University of Strathclyde, Glasgow G4 0NG (United Kingdom); Plasma Physics Department, AWE plc, Aldermaston, Reading RG7 4PR (United Kingdom); McKenna, P. [Department of Physics, University of Strathclyde, Glasgow G4 0NG (United Kingdom); Norreys, P.A. [Central Laser Facility, Rutherford Appleton Laboratory, Chilton, Oxon OX11 OQX (United Kingdom); Zepf, M. [Department of Physics, The Queen's University, University Road, Belfast BT7 1NN (United Kingdom)

2004-11-01T23:59:59.000Z

57

Generation of high intensity rf pulses in the ionosphere by means of in situ compression  

SciTech Connect

We demonstrate, using a simple model, that high intensity pulses can be generated from a frequency-chirped modifier of much lower intensity by making use of the dispersive properties of the ionosphere. We show that a frequency-chirped pulse can be constructed so that its various components overtake each other at a prescribed height, resulting in large (up to one hundred times) transient intensity enhancements as compared to those achievable from a steady modifier operating at the same power. We examine briefly one possible application: the enhancement of plasma wave amplitudes which occurs as a result of the interaction of such a compressed pulse with pre-generated turbulence.

Cowley, S.C.; Perkins, F.W.; Valeo, E.J.

1993-04-01T23:59:59.000Z

58

A focusable, convergent fast-electron beam from ultra-high-intensity laser-solid interactions  

E-Print Network (OSTI)

A novel scheme for the creation of a convergent, or focussing, fast-electron beam generated from ultra-high-intensity laser-solid interactions is described. Self-consistent particle-in-cell simulations are used to demonstrate the efficacy of this scheme in two dimensions. It is shown that a beam of fast-electrons of energy 500 keV - 3 MeV propagates within a solid-density plasma, focussing at depth. The depth of focus of the fast-electron beam is controlled via the target dimensions and focussing optics.

Scott, R H H

2015-01-01T23:59:59.000Z

59

Dynamical Schwinger effect and high-intensity lasers. Realising nonperturbative QED  

E-Print Network (OSTI)

We consider the possibility of experimental verification of vacuum e^+e^- pair creation at the focus of two counter-propagating optical laser beams with intensities 10^{20}-10^{22} W/cm^2, achievable with present-day petawatt lasers, and approaching the Schwinger limit: 10^{29} W/cm^2 to be reached at ELI. Our approach is based on the collisionless kinetic equation for the evolution of the e^+ and e^- distribution functions governed by a non-Markovian source term for pair production. As possible experimental signals of vacuum pair production we consider e^+e^- annihilation into gamma-pairs and the refraction of a high-frequency probe laser beam by the produced e^+e^- plasma. We discuss the dependence of the dynamical pair production process on laser wavelength, with special emphasis on applications in the X-ray domain (X-FEL), as well as the prospects for \\mu^+\\mu^- and \\pi^+\\pi^- pair creation at high-intensity lasers. We investigate perspectives for using high-intensity lasers as ``boosters'' of ion beams in the few-GeV per nucleon range, which is relevant, e.g., to the exploration of the QCD phase transition in laboratory experiments.

D. B. Blaschke; A. V. Prozorkevich; G. Roepke; C. D. Roberts; S. M. Schmidt; D. S. Shkirmanov; S. A. Smolyansky

2008-11-21T23:59:59.000Z

60

Improvement in surface fatigue life of hardened gears by high-intensity shot peening  

SciTech Connect

Two groups of carburized, hardened, and ground spur gears that were manufactured from the same heat vacuum induction melted vacuum arc melted (VIM VAR) AISI 9310 steel were endurance tested for surface fatigue. Both groups were manufactured with a standard ground 16 rms surface finish. One group was subjected to a shot peening (SP) intensity of 7 to 9A, and the second group was subjected to a SP intensity of 15 to 17A. All gears were honed after SP to a surface finish of 16 rms. The gear pitch diameter was 8.89 cm. Test conditions were a maximum Hertz stress of 1.71 GPa, a gear temperature of 350 K, and a speed of 10000 rpm. The lubricant used for the tests was a synthetic paraffinic oil with an additive package. The following results were obtained: The 10 pct. surface fatigue (pitting) life of the high intensity (15 to 17A) SPed gears was 2.15 times that of the medium intensity (7 to 9A) SPed gears, the same as that calculated from measured residual stress at a depth of 127 microns. The measured residual stress for the high intensity SPed gears was 57 pct. higher than that for the medium intensity SPed gears at a depth of 127 microns and 540 pct. higher at a depth of 51 microns.

Townsend, D.P.

1992-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high-intensity discharge hid" from the National Library of EnergyBeta (NLEBeta).
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We encourage you to perform a real-time search of NLEBeta
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61

REPORT OF THE SNOWMASS M6 WORKING GROUP ON HIGH INTENSITY PROTON SOURCES.  

SciTech Connect

The M6 working group had more than 40 active participants (listed in Section 4). During the three weeks at Snowmass, there were about 50 presentations, covering a wide range of topics associated with high intensity proton sources. The talks are listed in Section 5. This group also had joint sessions with a number of other working groups, including E1 (Neutrino Factories and Muon Colliders), E5 (Fixed-Target Experiments), M1 (Muon Based Systems), T4 (Particle Sources), T5 (Beam dynamics), T7 (High Performance Computing) and T9 (Diagnostics). The M6 group performed a survey of the beam parameters of existing and proposed high intensity proton sources, in particular, of the proton drivers. The results are listed in Table 1. These parameters are compared with the requirements of high-energy physics users of secondary beams in Working Groups E1 and E5. According to the consensus reached in the E1 and E5 groups, the U.S. HEP program requires an intense proton source, a 1-4 MW Proton Driver, by the end of this decade.

CHOU,W.; WEI,J.

2001-08-14T23:59:59.000Z

62

Report of the Snowmass M6 Working Group on high intensity proton sources  

SciTech Connect

The U.S. high-energy physics program needs an intense proton source, a 1-4 MW Proton Driver (PD), by the end of this decade. This machine will serve as a stand-alone facility that will provide neutrino superbeams and other high intensity secondary beams such as kaons, muons, neutrons, and anti-protons (cf. E1 and E5 group reports) and also serve as the first stage of a neutrino factory (cf. M1 group report). It can also be a high brightness source for a VLHC. Based on present accelerator technology and project construction experience, it is both feasible and cost-effective to construct a 1-4 MW Proton Driver. Two recent PD design studies have been made, one at FNAL and the other at the BNL. Both designed PD's for 1 MW proton beams at a cost of about U.S. $200M (excluding contingency and overhead) and both designs were upgradeable to 4 MW. An international collaboration between FNAL, BNL and KEK on high intensity proton facilities is addressing a number of key design issues. The superconducting (sc) RF cavities, cryogenics, and RF controls developed for the SNS can be directly adopted to save R&D efforts, cost, and schedule. PD studies are also actively being pursued at Europe and Japan.

Weiren Chou and J. Wei

2002-08-20T23:59:59.000Z

63

A Class Of Generalized Kapchinskij-Vladimirskij Solutions And Associated Envelope Equations For High-intensity Charged Particle Beams  

SciTech Connect

A class of generalized Kapchinskij-Vladimirskij solutions of the nonlinear Vlasov-Maxwell equations and the associated envelope equations for high-intensity beams in a periodic lattice is derived. It includes the classical Kapchinskij-Vladimirskij solution as a special case. For a given lattice, the distribution functions and the envelope equations are specified by eight free parameters. The class of solutions derived captures a wider range of dynamical envelope behavior for high-intensity beams, and thus provides a new theoretical tool to investigate the dynamics of high-intensity beams.

Hong Qin and Ronald C. Davidson

2012-04-25T23:59:59.000Z

64

A New High-intensity, Low-momentum Muon Beam for the Generation of Low-energy Muons at PSI  

Science Journals Connector (OSTI)

At the Paul Scherrer Institute (PSI, Villigen, Switzerland) a new high-intensity muon beam line with momentum p...< 40MeV/c is currently being commissioned. The beam line is especially designed to serve the need...

T. Prokscha; E. Morenzoni; K. Deiters; F. Foroughi; D. George

2004-12-01T23:59:59.000Z

65

A New High-Intensity, Low-Momentum Muon Beam for the Generation of Low-Energy Muons at PSI  

Science Journals Connector (OSTI)

At the Paul Scherrer Institute (PSI, Villigen, Switzerland) a new high-intensity muon beam line with momentum p...< 40 MeV/c is currently being commissioned. The beam line is especially designed to serve the need...

T. Prokscha; E. Morenzoni; K. Deiters; F. Foroughi; D. George; R. Kobler

2005-01-01T23:59:59.000Z

66

Fast neutron emission from a deuterated polystyrene solid target irradiated by a high-intensity laser pulse  

Science Journals Connector (OSTI)

Fast neutrons were generated from a deuterated polystyrene (C8D8) solid-target irradiated by a high-intensity laser. A TOF neutron signal is analyzed in detail. A...

Lee, Sungman; Kwon, Sungok; Lee, Kitae; Cha, Yong-Ho; Yea, Kwon-hae; Lee, Yong Woo; Lee, Ji Young; Jeong, Young Uk; Rhee, Yong Joo; Cha, Hyungki

67

Fast neutron emission from a deuterated polystyrene solid target irradiated by a high-intensity laser pulse  

Science Journals Connector (OSTI)

Fast neutrons were generated from a deuterated polystyrene (C8D8) solid-target irradiated by a high-intensity laser. A TOF neutron signal is analyzed in detail....

Lee, Sungman; Kwon, Sungok; Lee, Kitae; Cha, Yong-Ho; Yea, Kwon-hae; Lee, Yong Woo; Lee, Ji Young; Jeong, Young Uk; Rhee, Yong Joo; Cha, Hyungki

68

Industrial Fabrication of Medium-Beta SCRF Cavities for a High-Intensity Proton Linac  

E-Print Network (OSTI)

During 1999, four 700-MHz, medium-beta (b = 0.64), superconducting radio frequency (SCRF) cavities for a high-intensity proton linac project at Los Alamos National Laboratory (LANL) were manufactured by industry. The SCRF cavities were designed by a LANL team in Los Alamos, New Mexico, USA, and manufactured at a CERCA plant in Romans, France. The cavities were made of 4-mm-thick, solid niobium sheets with a residual resistivity ratio (RRR) greater than 250. These niobium sheets were supplied by Wah Chang (USA), Heraeus AG (Germany), and Tokyo Denkai (Japan). The SCRF cavities were shipped to LANL for performance testing. This paper describes the experience gained during the manufacturing process at CERCA.

Kuzminski, J; Gentzlinger, R C; Maccioni, P

2000-01-01T23:59:59.000Z

69

Fundamental physics on natures of the macroscopic vacuum under high intense electromagnetic fields with accelerators  

E-Print Network (OSTI)

High intense electromagnetic fields can be unique probes to study natures of macroscopic vacua by themselves. Combining accelerators with the intense field can provide more fruitful probes which can neither be achieved by only intense fields nor only high energy accelerators. We will overview the natures of vacua which can be accessible via intense laser-laser and intense laser-electron interactions. In the case of the laser-laser interaction, we propose how to observe nonlinear QED effects and effects of new fields like light scalar and pseudo scalar fields which may contribute to a macroscopic nature of our universe such as dark energy. In the case of the laser-electron interaction, in addition to nonlinear QED effects, we can further discuss the nature of accelerating field in the vacuum where we can access physics related with event horizons such as Hawking-Unruh radiations. We will introduce a recent experimental trial to search for this kind of odd radiations.

Kensuke Homma

2009-11-30T23:59:59.000Z

70

Detailed studies of Minor Actinide transmutation-incineration in high-intensity neutron fluxes  

SciTech Connect

The Mini-INCA project is dedicated to the measurement of incineration-transmutation chains and potentials of minor actinides in high-intensity thermal neutron fluxes. In this context, new types of detectors and methods of analysis have been developed. The {sup 241}Am and {sup 232}Th transmutation-incineration chains have been studied and several capture and fission cross sections measured very precisely, showing some discrepancies with existing data or evaluated data. An impact study was made on different based-like GEN-IV reactors. It underlines the necessity to proceed to precise measurements for a large number of minor-actinides that contribute to these future incineration scenarios. (authors)

Bringer, O. [CEA/Saclay/DSM/DAPNIA, Gif-sur-Yvette (France); Al Mahamid, I. [Lawrence Berkeley National Laboratory, E.H. and S. Div., CA (United States); Blandin, C. [CEA/Cadarache/DEN/DER/SPEX, Saint-Paul-lez-Durances (France); Chabod, S. [CEA/Saclay/DSM/DAPNIA, Gif-sur-Yvette (France); Chartier, F. [CEA/Cadarache/DEN/DPC/SECR, Gif-sur-Yvette (France); Dupont, E.; Fioni, G. [CEA/Saclay/DSM/DAPNIA, Gif-sur-Yvette (France); Isnard, H. [CEA/Cadarache/DEN/DPC/SECR, Gif-sur-Yvette (France); Letourneau, A.; Marie, F. [CEA/Saclay/DSM/DAPNIA, Gif-sur-Yvette (France); Mutti, P. [Institut Laue-Langevin, Grenoble (France); Oriol, L. [CEA/Cadarache/DEN/DER/SPEX, Saint-Paul-lez-Durances (France); Panebianco, S.; Veyssiere, C. [CEA/Saclay/DSM/DAPNIA, Gif-sur-Yvette (France)

2006-07-01T23:59:59.000Z

71

Epithermal Neutron Source for Neutron Resonance Spectroscopy (NRS) using High Intensity, Short Pulse Lasers  

SciTech Connect

A neutron source for neutron resonance spectroscopy (NRS) has been developed using high intensity, short pulse lasers. This measurement technique will allow for robust measurements of interior ion temperature of laser-shocked materials and provide insight into equation of state (EOS) measurements. The neutron generation technique uses protons accelerated by lasers off of Cu foils to create neutrons in LiF, through (p,n) reactions with {sup 7}Li and {sup 19}F. The distribution of the incident proton beam has been diagnosed using radiochromic film (RCF). This distribution is used as the input for a (p,n) neturon prediction code which is compared to experimentally measured neutron yields. From this calculation, a total fluence of 1.8 x 10{sup 9} neutrons is infered, which is shown to be a reasonable amount for NRS temperature measurement.

Higginson, D P; McNaney, J M; Swift, D C; Bartal, T; Hey, D S; Pape, S L; Mackinnon, A; Mariscal, D; Nakamura, H; Nakanii, N; Beg, F N

2010-04-22T23:59:59.000Z

72

Project-X: A new high intensity proton accelerator complext at Fermilab  

E-Print Network (OSTI)

Fermilab has been working with the international particle physics and nuclear physics communities to explore and develop research programs possible with a new high intensity proton source known as "Project-X". Project X will provide multi-megawatt proton beams from the Fermilab Main Injector over the energy range 60-120 GeV simultaneous with multi-megawatt protons beams at 3 GeV with very flexible beam-timing characteristics and up to 300 kW of pulsed beam at 8 GeV. The Project-X research program includes world leading sensitivity in longbaseline neutrino experiments, neutrino scattering experiments, a rich program of ultra-rare muon and kaon decays, opportunities for next-generation electric dipole moment experiments and other nuclear/particle physics probes that reach far beyond the Standard Model.

R. Tschirhart

2011-09-15T23:59:59.000Z

73

ANALYSIS AND MITIGATION OF X-RAY HAZARD GENERATED FROM HIGH INTENSITY LASER-TARGET INTERACTIONS  

SciTech Connect

Interaction of a high intensity laser with matter may generate an ionizing radiation hazard. Very limited studies have been made, however, on the laser-induced radiation protection issue. This work reviews available literature on the physics and characteristics of laser-induced X-ray hazards. Important aspects include the laser-to-electron energy conversion efficiency, electron angular distribution, electron energy spectrum and effective temperature, and bremsstrahlung production of X-rays in the target. The possible X-ray dose rates for several femtosecond Ti:sapphire laser systems used at SLAC, including the short pulse laser system for the Matter in Extreme Conditions Instrument (peak power 4 TW and peak intensity 2.4 x 10{sup 18} W/cm{sup 2}) were analysed. A graded approach to mitigate the laser-induced X-ray hazard with a combination of engineered and administrative controls is also proposed.

Qiu, R.; Liu, J.C.; Prinz, A.A.; Rokni, S.H.; Woods, M.; Xia, Z.; /SLAC; ,

2011-03-21T23:59:59.000Z

74

Mercury Lamps Recycling Fluorescent light-tubes, compact fluorescent bulbs, mercury and sodium vapor lamps, ultraviolet and  

E-Print Network (OSTI)

Mercury Lamps Recycling Fluorescent light-tubes, compact fluorescent bulbs, mercury and sodium vapor lamps, ultraviolet and HID (high-intensity discharge) lamps and all other mercury containing labeled for shipment to a recycling plant for mercury, glass and aluminum recovery. The beneficial re

Baker, Chris I.

75

General Electric Lighting The last couple months at General Electric Lighting have been very exciting. In addition to the  

E-Print Network (OSTI)

a high voltage is applied to them, a plasma arc is formed, and the intense heat causes the electrons. I am still currently in the High Intensity Discharge (HID) division, working on a new outdoor lamp amounts of these elements are used to carefully control the color balance of the lamp. For example, sodium

Rollins, Andrew M.

76

Office of Environmental Health and Safety The University of Texas at Austin  

E-Print Network (OSTI)

202 Austin, Texas 78712 (512) 471-3511; Fax: (512) 471-6918 INFO SHEET Fluorescent Light Bulb Disposal such as small lamps, mercury vapor lamps, and other odd shaped fluorescent tubes. In the case of smaller bulbs Used Fluorescent, high intensity discharge (HID), and UV germicidal lamps are considered a hazardous

77

Ethanol injection induced cavitation and heating in tissue exposed to high intensity focused ultrasound  

Science Journals Connector (OSTI)

High Intensity Focused Ultrasound (HIFU) can ablatetumors located deep in the body through highly localized energy deposition and tissue heating at the target location. The volume of a HIFU-induced thermal lesion can be increased in the presence of cavitation. This study explores the effect of ethanol injection on cavitation and heating in tissue-mimicking phantoms and bovine liver tissues exposed to HIFU. The HIFU transducer (0.825 MHz) operated at seven acoustic power levels ranging from 1.3 W to 26.8 W. The cavitation events were quantified by B-mode ultrasound imaging needle hydrophone measurements and passive cavitation detection (PCD). Temperature in or near the focal zone was measured by thermocouples embedded in the samples. The onset of inertial cavitation in ethanol-treated phantoms and bovine liver tissues occurred at a lower power level than in the untreated samples (control). The cavitation occurrence in turn resulted in a sudden rise of temperature in ethanol-treated samples at a lower acoustic power than that in control. The results of this work indicate that the use of percutaneous ethanol injection prior to HIFU exposure may improve the HIFU therapeutic efficiency.

Chong Chen; Yunbo Liu; Subha Maruvada; Matthew Myers; Damir Khismatullin

2012-01-01T23:59:59.000Z

78

Simulation of the Beam Dump for a High Intensity Electron Gun  

E-Print Network (OSTI)

The CLIC Drive Beam is a high-intensity pulsed electron beam. A test facility for the Drive Beam electron gun will soon be commissioned at CERN. In this contribution we outline the design of a beam dump / Faraday cup capable of resisting the beams thermal load. The test facility will operate initially up to 140 keV. At such low energies, the electrons are absorbed very close to the surface of the dump, leading to a large energy deposition density in this thin layer. In order not to damage the dump, the beam must be spread over a large surface. For this reason, a small-angled cone has been chosen. Simulations using Geant4 have been performed to estimate the distribution of energy deposition in the dump. The heat transport both within the electron pulse and between pulses has been modelled using finite element methods to check the resistance of the dump at high repetition rates. In addition, the possibility of using a moveable dump to measure the beam profile and emittance is discussed.

Doebert, S; Lefevre, T; Pepitone, K

2014-01-01T23:59:59.000Z

79

Generalized Kapchinskij-Vladimirskij Distribution and Envelope Equation for High-Intensity Beams in a Coupled Transverse Focusing Lattice  

SciTech Connect

In an uncoupled lattice, the Kapchinskij-Vladimirskij (KV) distribution function first analyzed in 1959 is the only known exact solution of the nonlinear Vlasov-Maxwell equations for high-intensity beams including self-fields in a self-consistent manner. The KV solution is generalized here to high-intensity beams in a coupled transverse lattice using the recently developed generalized Courant-Snyder invariant for coupled transverse dynamics. This solution projects to a rotating, pulsating elliptical beam in transverse configuration space, determined by the generalized matrix envelope equation.

Qin Hong; Davidson, Ronald C. [Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States); Chung, Moses [Accelerator Physics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)

2009-11-27T23:59:59.000Z

80

Generalized Kapchinskij-Vladimirskij Distribution and Envelope Equation for High-intensity Beams in a Coupled Transverse Focusing Lattice  

SciTech Connect

In an uncoupled lattice, the Kapchinskij-Vladimirskij (KV) distribution function first analyzed in 1959 is the only known exact solution of the nonlinear Vlasov-Maxwell equations for high- intensity beams including self-fields in a self-consistent manner. The KV solution is generalized here to high-intensity beams in a coupled transverse lattice using the recently developed generalized Courant-Snyder invariant for coupled transverse dynamics. This solution projects to a rotating, pulsating elliptical beam in transverse configuration space, determined by the generalized matrix envelope equation.

Hong Qin, Moses Chung, and Ronald C. Davidson

2009-11-20T23:59:59.000Z

Note: This page contains sample records for the topic "high-intensity discharge hid" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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81

Enhancement of x-ray line emission from plasmas produced by short high-intensity laser double pulses  

E-Print Network (OSTI)

Enhancement of x-ray line emission from plasmas produced by short high-intensity laser double laser-produced plasmas are bright ultrafast line x-ray sources potentially suitable for different onto a solid target into the x-ray emission is significantly enhanced when a laser prepulse precedes

Limpouch, Jiri

82

Line X-ray emission from Al targets irradiated by high-intensity, variable-length laser pulses  

E-Print Network (OSTI)

Line X-ray emission from Al targets irradiated by high-intensity, variable-length laser pulses J; the scaling rules for the conversion efficiency of the laser radiation into the line X-ray emission are discussed. Keywords: Laser-produced plasma; Line X-ray emission; X-ray sources; X-ray spectroscopy 1

Limpouch, Jiri

83

Observations of the filamentation of high-intensity laser-produced electron beams M. S. Wei,1  

E-Print Network (OSTI)

be necessary for actual ignition experiments, the required laser needs to have energies of tens of kObservations of the filamentation of high-intensity laser-produced electron beams M. S. Wei,1 F. N Central Laser Facility, Rutherford Appleton Laboratory, Chilton, Oxon OX11 OQX, United Kingdom 5

Strathclyde, University of

84

Oscillations in glow discharges  

E-Print Network (OSTI)

OSCILLATIONS IN GLOW DISCHARGES A Dissertation By Tom Prickett, Jr. June 1950 Approved as to style and content by Chairman of Committee OSCILLATIONS IN GLOW DISCHARGES A Dissertation By Tom Prickett, Jr* June 1950 OSCILLATIONS IN GLOW... 1950 CONTENTS Introduction ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 1 I. Review of Plasma Oscillations in Gas Discharges ? . . 2 II. Review of Relaxation Processes in Gas Discharges ? . 13 III. Report of Laboratory Investigation...

Prickett, Tom

1950-01-01T23:59:59.000Z

85

Sensitivity to Dark Energy candidates by searching for four-wave mixing of high-intensity lasers in the vacuum  

E-Print Network (OSTI)

Theoretical challenges to understand Dark Matter and Dark Energy suggest the existence of low-mass and weakly coupling fields in the universe. The quasi-parallel photon-photon collision system (QPS) can provide chances to probe the resonant production of these light dark fields and the induced decay by the coherent nature of laser fields simultaneously. By focusing high-intensity lasers with different colors in the vacuum, new colors emerge as the signature of the interaction. Because four photons in the initial and final states interplay via the dark field exchange, this process is analogous to four-wave mixing in quantum optics, where the frequency sum and difference among the incident three waves generate the fourth wave with a new frequency via the nonlinear property of crystals. The interaction rate of the four-wave mixing process has the cubic dependence on the intensity of each wave. Therefore, if high-intensity laser fields are given, the sensitivity to the weakly coupling of dark fields to photons rapidly increases over the wide mass range below sub-eV. Based on the experimentally measurable photon energies and the linear polarization states, we formulate the relation between the accessible mass-coupling domains and the high-intensity laser parameters, where the effects of the finite spectrum width of pulse lasers are taken into account. The expected sensitivity suggests that we have a potential to explore interactions at the Super-Planckian coupling strength in the sub-eV mass range, if the cutting-edge laser technologies are properly combined.

Kensuke Homma

2012-11-12T23:59:59.000Z

86

Centroid and Envelope Dynamics of High-intensity Charged Particle Beams in an External Focusing Lattice and Oscillating Wobbler  

SciTech Connect

The centroid and envelope dynamics of a high-intensity charged particle beam are investigated as a beam smoothing technique to achieve uniform illumination over a suitably chosen region of the target for applications to ion-beam-driven high energy density physics and heavy ion fusion. The motion of the beam centroid projected onto the target follows a smooth pattern to achieve the desired illumination, for improved stability properties during the beam-target interaction. The centroid dynamics is controlled by an oscillating "wobbler", a set of electrically-biased plates driven by RF voltage. __________________________________________________

Hong Qin, Ronald C. Davidson and B. Grant Logan

2010-04-28T23:59:59.000Z

87

Direct Discharge Permit (Vermont)  

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

A direct discharge permit is required if a project involves the discharge of pollutants to state waters. For generation purposes, this involves the withdrawal of surface water for cooling purposes...

88

HiRadMat at CERN/SPS - A dedicated facility providing high intensity beam pulses to material samples  

E-Print Network (OSTI)

HiRadMat (High Radiation to Materials), constructed in 2011, is a facility at CERN designed to provide high?intensity pulsed beams to an irradiation area where material samples as well as accelerator component assemblies (e.g. vacuum windows, high power beam targets, collimators) can be tested. The facility uses a 440 GeV proton beam extracted from the CERN SPS with a pulse length of up to 7.2 us, and with a maximum pulse energy of 3.4 MJ (3xE13 proton/pulse). In addition to protons, ion beams with energy of 440 GeV/charge and total pulse energy of 21 kJ can be provided. The beam parameters can be tuned to match the needs of each experiment. HiRadMat is not an irradiation facility where large doses on equipment can be accumulated. It is rather a test area designed to perform single pulse experiments to evaluate the effect of high?intensity pulsed beams on materials or accelerator component assemblies in a controlled environment. The fa? cility is designed for a maximum of 1E16 protons per year, dist...

Charitonidis, N; Efthymiopoulos, I

2014-01-01T23:59:59.000Z

89

Influence of nanosized semiconducting additives on the properties of energy-storage phase-change materials subjected to a high-intensity electron beam  

Science Journals Connector (OSTI)

The stability of paraffin with a different concentration of copper nanopowder (a particle size of 50 and 100 nm) against a high-intensity nanosecond electron beam is studied experimentally. It is shown that th...

G. G. Savenkov; V. A. Morozov; V. A. Bragin; V. M. Kats; A. A. Lukin

2013-07-01T23:59:59.000Z

90

Nonsputtering impulse magnetron discharge  

SciTech Connect

Experiments with quasi-steady high-current discharges in crossed E Multiplication-Sign B fields in various gases (Ar, N{sub 2}, H{sub 2}, and SF{sub 6}) and gas mixtures (Ar/SF{sub 6} and Ar/O{sub 2}) at pressures from 10{sup -3} to 5 Torr in discharge systems with different configurations of electric and magnetic fields revealed a specific type of stable low-voltage discharge that does not transform into an arc. This type of discharge came to be known as a high-current diffuse discharge and, later, a nonsputtering impulse magnetron discharge. This paper presents results from experimental studies of the plasma parameters (the electron temperature, the plasma density, and the temperature of ions and atoms of the plasma-forming gas) of a high-current low-pressure diffuse discharge in crossed E Multiplication-Sign B fields.

Khodachenko, G. V.; Mozgrin, D. V.; Fetisov, I. K.; Stepanova, T. V. [National Research Nuclear University Moscow Engineering Physics Institute (Russian Federation)

2012-01-15T23:59:59.000Z

91

Application of high intensity UVC-LED for the removal of acetamiprid with the photo-Fenton process  

Science Journals Connector (OSTI)

Abstract Research into the use of light-emitting diodes (LED) for wastewater treatment has increased in recent years. \\{LEDs\\} are more efficient than other UV lamps because of their reduced heat dissipation and much longer life span. However, most of the UVC-LEDs that are currently available are of such low intensity that the large number of bulbs required for effective treatment of wastewater streams makes their application uneconomic. The development of higher intensity UVC-LEDs may therefore lead to more feasible technology options for wastewater treatment with UV-based advanced oxidation processes (AOPs). The aim of this work was to study the efficiency of high-intensity UVC-LED lamps (20 W/m2) for the removal of micropollutants with the photo-Fenton process. The pesticide acetamiprid was used as model pollutant at a concentration of 100 ?g/L in synthetic secondary effluent due to its recalcitrant nature. Degradation using a low-pressure UVC-lamp (LPL) was also assessed for comparative purposes. The process was operated at pH 2.8 and at natural pH. The volumetric photon absorption (VRPA) was calculated for the results at acidic pH, where the catalyst was soluble, to investigate the influence of iron and hydrogen peroxide concentrations on acetamiprid degradation, based on their absorption for both systems. A model was proposed and results indicated that the contribution of both hydrogen peroxide and iron to the generation of radicals was the same in the LED system. At natural pH, the high intensity LED system was effective in the removal of acetamiprid, achieving degradation in 20 min adding 1+1+1 mg Fe/L (sequential iron dosage) and 12 mg H2O2/L.

Irene Carra; Jos Antonio Snchez Prez; Sixto Malato; Olivier Autin; Bruce Jefferson; Peter Jarvis

2014-01-01T23:59:59.000Z

92

Observation and numerical analysis of plasma parameters in a capillary discharge-produced plasma channel waveguide  

SciTech Connect

We observed the parameters of the discharge-produced plasma in cylindrical capillary. Plasma parameters of the waveguide were investigated by use of both a Normarski laser interferometer and a hydrogen plasma line spectrum. A space-averaged maximum temperature of 3.3 eV with electron densities of the order of 10{sup 17} cm{sup -3} was observed at a discharge time of 150 ns and a maximum discharge current of 200 A. One-dimensional dissipative magnetohydrodynamic (MHD) code was used to analyze the discharge dynamics in the gas-filled capillary discharge waveguide for high-intensity laser pulses. Simulations were performed for the conditions of the experiment. We compared the temporal behavior of the electron temperature and the radial electron density profiles, measured in the experiment with the results of the numerical simulations. They occurred to be in a good agreement. An ultrashort, intense laser pulse was guided by use of this plasma channel.

Terauchi, Hiromitsu [Department of Advanced Interdisciplinary Sciences, and Center for Optical Research and Education (CORE) Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan); Bobrova, Nadezhda; Sasorov, Pavel [Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya str. 25, 117259 Moscow (Russian Federation); Kikuchi, Takashi; Sasaki, Toru [Department of Electrical Engineering, Nagaoka University of Technology, Kami-tomiokamachi 1603-1, Nagaoka, Niigata 940-2188 Japan (Japan); Higashiguchi, Takeshi; Yugami, Noboru [Department of Advanced Interdisciplinary Sciences, and Center for Optical Research and Education (CORE) Utsunomiya University, Yoto 7-1-2, Utsunomiya, Tochigi 321-8585 (Japan); Japan Science and Technology Agency, CREST, 4-1-8 Honcho, Kanagawa, Saitama 332-0012 (Japan); Kodama, Ryosuke [Japan Science and Technology Agency, CREST, 4-1-8 Honcho, Kanagawa, Saitama 332-0012 (Japan); Graduate School of Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565-0871 (Japan)

2011-03-01T23:59:59.000Z

93

Effect of ethanol injection on cavitation and heating of tissues exposed to high-intensity focused ultrasound  

Science Journals Connector (OSTI)

Cavitation activity and temperature rise have been investigated in a tissue-mimicking material and excised bovine liver treated with ethanol and insonated with a 0.825 MHz focused acoustic transducer. The acoustic power was varied from 1.3 to 26.8 W to find the threshold leading to the onset of inertial cavitation. Cavitation events were quantified by three independent techniques: B-mode ultrasound imaging, needle hydrophone measurements and passive cavitation detection. Temperature in or near the focal zone was measured by thermocouples embedded in the samples. The results of this study indicate that the treatment of tissue phantoms and bovine liver samples with ethanol reduces their threshold power for inertial cavitation. This in turn leads to a sudden rise in temperature in ethanol-treated samples at a lower acoustic power than that in untreated ones. The analysis of passive cavitation detection data shows that once the threshold acoustic power is reached, inertial cavitation becomes a major contributor to acoustic scattering in ethanol-treated phantoms and bovine liver samples as compared to control. This study opens up the possibility of improved tumor ablation therapy via a combination of percutaneous ethanol injection and high-intensity focused ultrasound.

C Chen; Y Liu; S Maruvada; M Myers; D Khismatullin

2012-01-01T23:59:59.000Z

94

Management of Respiratory Motion in Extracorporeal High-Intensity Focused Ultrasound Treatment in Upper Abdominal Organs: Current Status and Perspectives  

SciTech Connect

Extracorporeal high-intensity focused ultrasound (HIFU) is a minimally invasive therapy considered with increased interest for the ablation of small tumors in deeply located organs while sparing surrounding critical tissues. A multitude of preclinical and clinical studies have showed the feasibility of the method; however, concurrently they showed several obstacles, among which the management of respiratory motion of abdominal organs is at the forefront. The aim of this review is to describe the different methods that have been proposed for managing respiratory motion and to identify their advantages and weaknesses. First, we specify the characteristics of respiratory motion for the liver, kidneys, and pancreas and the problems it causes during HIFU planning, treatment, and monitoring. Second, we make an inventory of the preclinical and clinical approaches used to overcome the problem of organ motion. Third, we analyze their respective benefits and drawbacks to identify the remaining physical, technological, and clinical challenges. We thereby consider the outlook of motion compensation techniques and those that would be the most suitable for clinical use, particularly under magnetic resonance thermometry monitoring.

Muller, A., E-mail: arnaud.muller@chu-lyon.fr [Centre Hospitalier Lyon Sud, Service de Radiologie, Hospices Civils de Lyon (France); Petrusca, L.; Auboiroux, V. [University of Geneva, Department of Radiology, Faculty of Medicine (Switzerland)] [University of Geneva, Department of Radiology, Faculty of Medicine (Switzerland); Valette, P. J. [Centre Hospitalier Lyon Sud, Service de Radiologie, Hospices Civils de Lyon (France)] [Centre Hospitalier Lyon Sud, Service de Radiologie, Hospices Civils de Lyon (France); Salomir, R. [University of Geneva, Department of Radiology, Faculty of Medicine (Switzerland)] [University of Geneva, Department of Radiology, Faculty of Medicine (Switzerland); Cotton, F. [Centre Hospitalier Lyon Sud, Service de Radiologie, Hospices Civils de Lyon (France)] [Centre Hospitalier Lyon Sud, Service de Radiologie, Hospices Civils de Lyon (France)

2013-12-15T23:59:59.000Z

95

Real time two?dimensional temperature imaging for guidance and monitoring of high?intensity focused ultrasound beams.  

Science Journals Connector (OSTI)

We have recently introduced a fully real time 2?D temperature imaging system using diagnostic ultrasound. A SonixRP is used to collect beamformed M2D mode data with frame rates in the 200400 fps during the application of pulsed high?intensity focused ultrasound (pHIFU). M2D mode is a modification on the SonixRP allowing for maximizing the number of scanlines per frame for a specified frame rate. This allows for capturing the full range of tissue motions during the application of the pHIFU beams including native motions due to breathing and pulsations radiation forces due to pHIFU and temperature?induced strains. In this paper we demonstrate the use of this image?guidance mode in the control of the pHIFU exposure in real time with millisecond temporal resolution. Results from heating and lesion formation experiments in the hindlimb of nude mice in vivo will be presented. Temperature imaging results during the application of subtherapeutic pHIFU beams before therapeutic pHIFU lesion formation will demonstrate the advantages of this approach in the guidance and dose estimation. In addition temperature imaging of subtherapeutic pHIFU after lesion formation allows for the measurement of changes in tissue properties that may be used as indicators of irreversible tissue damage.

Dalong Liu; John R. Ballard; Alyona Haritonova; Jing Jiang; John C. Bischof; Emad S. Ebbini

2010-01-01T23:59:59.000Z

96

Neutron production from 7Li(d,xn) nuclear fusion reactions driven by high-intensity lasertarget interactions  

Science Journals Connector (OSTI)

Numerical simulations of neutron production from deuteriumlithium nuclear fusion reactions have been performed. A set of differential cross sections for the 7Li(d,xn) reaction for incident deuteron energies of up to 50?MeV is assembled. The angular distribution of neutrons from a thick lithium target is simulated and benchmarked against experimental data. Two-stage neutron production from lasertarget experiments has been studied as a function of laser intensity and energy. During the first stage a well collimated deuteron beam is generated using a high-intensity ultrashort pulse laser. During the second stage it is transported through a lithium target using a 3D Monte-Carlo ion beamtarget deposition model. The neutron yield is estimated to be ~108?neutrons?J?1 laser energy. Some 1010 neutrons can be expected from a ~100?J petawatt-class laser. For incident deuteron energies above 1?MeV the proposed scheme for neutron production from dLi reactions is superior to that from dd reactions, producing a collimated beam of neutrons with higher neutron yield.

J Davis; G M Petrov; Tz Petrova; L Willingale; A Maksimchuk; K Krushelnick

2010-01-01T23:59:59.000Z

97

Silane discharge ion chemistry  

SciTech Connect

Silane dc, rf, and dc proximity discharges have been studied using mass spectroscopic measurements of the positive ions as a detailed diagnostic for the type of discharge used to produce hydrogenated amorphous silicon solar photovoltaic cells. The properties and quality of these films depends in a very complex way upon the interactions of the many reactive neutral and ion species in the discharge. Qualitative models of the ion chemical processes in these discharges have been developed from experimental measurements. Knowledge of the ion-molecule and electron-molecule collision cross sections is important to any attempt at understanding silane discharge chemistry. Consequently, the electron impact ionization cross sections for silane and disilane have been measured and for comparison purposes also for methane and ethane. In addition, the rate coefficients for charge exchange reactions of He , Ne , and Ar with silane, disilane, methane, and ethane have been measured as these are important to understanding discharges in inert gas-silane mixtures. A detailed quantitative model of the cathode sheath region of a silane dc discharge has been developed by extending the best recent calculation of the electron motion in the sheath to a self-consistent form which includes the ion motion. This model is used with comparison of silane dc discharge data to diagnose the ion chemistry occurring in the sheath region of silane dc discharge. The understanding of the discharge ion chemical processes that have been gained in this study represent an important step toward understanding the chemical and physical processes leading to film growth.

Chatham, R.H. III

1984-01-01T23:59:59.000Z

98

Glow discharge detector  

DOE Patents (OSTI)

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.

Koo, Jackson C. (San Ramon, CA); Yu, Conrad M. (Antioch, CA)

2002-01-01T23:59:59.000Z

99

The Transmutation of Nuclear Waste in the Two-Zone Subcritical System Driven by High- Intensity Neutron Generator - 12098  

SciTech Connect

The main problems of transmutation of high-level radioactive waste (minor actinides and long-lived fission products) are considered in our work. The range of radioactive waste of nuclear power is analyzed. The conditions under which the transmutation of radioactive waste will be most effective are analyzed too. The modeling results of a transmutation of the main radioactive isotopes are presented and discussed. The transmutation of minor actinides and long-lived fission products are modeled in our work (minor actinides - Np-237, Am-241, Am-242, Am-243, Cm-244, Cm-245; long-lived fission products - I-129, Tc-99). The two-zone subcritical system is calculated with help of different neutron-physical codes (MCNP, Scale, Montebarn, Origen). The ENDF/B-VI nuclear data library used in above calculations. Thus, radioactive wastes can be divided into two main groups that need to be transmuted. The minor actinides form the first group and the long-lived fission products form the second one. For the purpose of effective transmutation these isotopes must be extracted from the spent nuclear fuel with the help of either PUREX technology or pyrometallurgical technology. The two-zone reactor system with fast and thermal regions is more effective for nuclear waste transmutation than the one-zone reactor. Modeling results show that nearly all radioactive wastes can be transmuted in the two-zone subcritical system driven by a high-intensity neutron generator with the external neutron source strength of 1.10{sup 13} n/sec. Obviously, transmutation rate will increase with a rise of the external neutron source strength. From the results above we can also see that the initial loading of radioactive isotopes into the reactor system should exceed by mass those isotopes that are finally produced. (authors)

Babenko, V.O. [Bogolyubov Institute for Theoretical Physics, Metrolohichna str. 14-b, Kiev, 03680 (Ukraine); Gulik, V.I.; Pavlovych, V.M. [Institute for Nuclear Research, pr. Nauky 47, Kyiv, 03680 (Ukraine)

2012-07-01T23:59:59.000Z

100

Intrapleural Fluid Infusion for MR-Guided High-Intensity Focused Ultrasound Ablation in the Liver Dome  

Science Journals Connector (OSTI)

Rationale and Objectives Magnetic resonanceguided high-intensity focused ultrasound (MR-HIFU) ablation of tumors in the liver dome is challenging because of the presence of air in the costophrenic angle. In this study, we used a porcine liver model and a clinical MR-HIFU system to assess the feasibility and safety of using intrapleural fluid infusion (IPI) to create an acoustic window for MR-HIFU ablation in the liver dome. Materials and Methods Healthy adult Dalland land pigs (n=6) under general anesthesia were used with animal committee approval. Degassed saline (200800mL) was infused into the intrapleural space under ultrasound guidance. A clinical 1.5-T MR-HIFU system was used to perform sonications (4-mm treatment cells, 300450W, 2030seconds) in the liver dome under real-time MR thermometry. Anintercostal firing technique was used to prevent rib heating in one experiment. Technical success was defined as a temperature increase (>10C) in the target area. After termination, the animal was examined for thermal damage to liver, diaphragm, pleura, lung, or intercostal muscle. Results An acoustic window was established in all animals. A temperature increase in the target area was achieved in all animals (max. 47C67C). MR thermometry showed no heating outside the target area. Intercostal firing effectively reduced rib heating (55C vs. 42C). Postmortem examination revealed no unwanted thermal damage. One complication occurred, in the first experiment, because of an ill-suited needle (displacement of the needle). Conclusions The results indicate that IPI may be used safely to assist MR-HIFU ablation of tumors in the liver dome. For reliable tissue coagulation, IPI must be combined with an intercostal sonication technique. Considering the proportion of patients with tumors in the liver dome, IPI widens the applicability of MR-HIFU ablation for liver tumors considerably.

Joost W. Wijlemans; Martijn de Greef; Gerald Schubert; Chrit T.W. Moonen; Maurice A.A.J. van den Bosch; Mario Ries

2014-01-01T23:59:59.000Z

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


101

Generalized Courant-Snyder theory and Kapchinskij-Vladimirskij distribution for high-intensity beams in a coupled transverse focusing lattice  

SciTech Connect

The Courant-Snyder (CS) theory and the Kapchinskij-Vladimirskij (KV) distribution for high-intensity beams in an uncoupled focusing lattice are generalized to the case of coupled transverse dynamics. The envelope function is generalized to an envelope matrix, and the envelope equation becomes a matrix envelope equation with matrix operations that are noncommutative. In an uncoupled lattice, the KV distribution function, first analyzed in 1959, is the only known exact solution of the nonlinear Vlasov-Maxwell equations for high-intensity beams including self-fields in a self-consistent manner. The KV solution is generalized to high-intensity beams in a coupled transverse lattice using the generalized CS invariant. This solution projects to a rotating, pulsating elliptical beam in transverse configuration space. The fully self-consistent solution reduces the nonlinear Vlasov-Maxwell equations to a nonlinear matrix ordinary differential equation for the envelope matrix, which determines the geometry of the pulsating and rotating beam ellipse. These results provide us with a new theoretical tool to investigate the dynamics of high-intensity beams in a coupled transverse lattice. A strongly coupled lattice, a so-called N-rolling lattice, is studied as an example. It is found that strong coupling does not deteriorate the beam quality. Instead, the coupling induces beam rotation and reduces beam pulsation.

Qin Hong [Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States); Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); Davidson, Ronald C. [Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)

2011-05-15T23:59:59.000Z

102

(Gas discharges and applications)  

SciTech Connect

The traveler attended the Ninth International Conference on Gas Discharges and Their Applications, which was held in Venice, Italy, on September 19--23, 1988; presented two papers, (1) Ion Chemistry in SF{sub 6} Corona'' and (2) Production of S{sub 2}F{sub 10} by SF{sub 6} Spark Discharge''; and participated in numerous discussions with conference participants on gas discharges related to his work on SF{sub 6}. The traveler visited the Centre de Physique Atomique at the University Paul Sabatier in Toulouse, France, to discuss with Dr. J. Casanovas his work on SF{sub 6} decomposition. Following that visit, the traveler visited the Laboratoire de Photoelectricite at the University of Dijon to discuss with Dr. J.-P. Goudonnet his work on surface studies and on the use of tunneling electron spectroscopy for the chemical analysis of surfaces.

Sauers, I.

1988-10-04T23:59:59.000Z

103

PERIODIC GLOW DISCHARGE REPORT  

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

GLOW DISCHARGE REPORT GLOW DISCHARGE REPORT TIME: Jan 11 2014 11:29:09:000PM Power Supply ON/OFF Status OFF Power Supply Fault Status FAULT Power Supply Standby Status ON Power Supply Interlock Status NOT OK HV Power Resistors Status NORMAL Power Supply Voltage 52.00 Power Supply Current -71.00 Electrode 1 Voltage -15.00 Electrode 1 Current -79.00 Electrode 2 Voltage -14.00 Electrode 2 Current -70.00 ROSS 1 Status OPEN ROSS 2 Status OPEN ROSS 1 Common Line OPEN ROSS 2 Common Line OPEN IGBT1 Enable DISABLE IGBT2 Enable DISABLE

104

Water Pollutant Discharge Act (Illinois)  

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

The discharge of oil in quantities which exceed the standards adopted by the Pollution Control Board, or the discharge of other pollutants directly or indirectly into the waters is prohibited....

105

Powerful glow discharge excilamp  

DOE Patents (OSTI)

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.

Tarasenko, Victor F. (Tomsk, RU); Panchenko, Aleksey N. (Tomsk, RU); Skakun, Victor S. (Tomsk, RU); Sosnin, Edward A. (Tomsk, RU); Wang, Francis T. (Danville, CA); Myers, Booth R. (Livermore, CA); Adamson, Martyn G. (Danville, CA)

2002-01-01T23:59:59.000Z

106

The discharge characteristics of the DUHOCAMIS with a high magnetic bottle-shaped field  

E-Print Network (OSTI)

For the purpose to produce high intensity, multiply charged metal ion beams, the DUHOCAMIS (dual hollow cathode ion source for metal ions) was derived from the hot cathode Penning ion source combined with the hollow cathode sputtering experiments in 2007. It was interesting to investigate the behavior of this discharge geometry in a stronger magnetic bottle-shaped field. So a new test bench for DUHOCAMIS with a high magnetic bottle-shaped field up to 0.6 T has been set up at Peking University, on which have been made primary experiments in connection with discharge characteristics of the source. The experiments with magnetic fields from 0.13 T to 0.52 T have shown that the magnetic flux densities are very sensitive to the discharge behavior: discharge curves and ion spectra. It has been found that the slope of discharge curves in a very wide range can be controlled by changing the magnetic field as well as regulated by adjusting cathode heating power. On the other hand, by comparison of discharge curves betwe...

Fu, Dongpo; Guo, Peng; Zhu, Kun; Wang, Jinghui; Hua, Jingshan; Ren, Xiaotang; Xue, Jianming; Zhao, Hongwei; Liu, Kexin

2014-01-01T23:59:59.000Z

107

Large discharge-volume, silent discharge spark plug  

DOE Patents (OSTI)

A large discharge-volume spark plug for providing self-limiting microdischarges. The apparatus includes a generally spark plug-shaped arrangement of a pair of electrodes, where either of the two coaxial electrodes is substantially shielded by a dielectric barrier from a direct discharge from the other electrode, the unshielded electrode and the dielectric barrier forming an annular volume in which self-terminating microdischarges occur when alternating high voltage is applied to the center electrode. The large area over which the discharges occur, and the large number of possible discharges within the period of an engine cycle, make the present silent discharge plasma spark plug suitable for use as an ignition source for engines. In the situation, where a single discharge is effective in causing ignition of the combustible gases, a conventional single-polarity, single-pulse, spark plug voltage supply may be used.

Kang, Michael (Los Alamos, NM)

1995-01-01T23:59:59.000Z

108

Searching for minicharged particles via birefringence, dichroism and Raman spectroscopy of the vacuum polarized by a high-intensity laser wave  

SciTech Connect

Absorption and dispersion of probe photons in the field of a high-intensity circularly polarized laser wave are investigated. The optical theorem is applied for determining the absorption coefficients in terms of the imaginary part of the vacuum polarization tensor. Compact expressions for the vacuum refraction indices and the photon absorption coefficients are obtained in various asymptotic regimes of interest. The outcomes of this analysis reveal that, far from the region relatively close to the threshold of the two-photon reaction, the birefringence and dichroism of the vacuum are small and, in some cases, strongly suppressed. On the contrary, in a vicinity of the region in which the photo-production of a pair occurs, these optical properties are manifest with lasers of moderate intensities. We take advantage of such a property in the search of minicharged particles by considering high-precision polarimetric experiments. In addition, Raman-like electromagnetic waves resulting from the inelastic part of the vacuum polarization tensor are suggested as an alternative form for finding exclusion limits on these hypothetical charge carriers. The envisaged parameters of upcoming high-intensity laser facilities are used for establishing upper bounds on the minicharged particles. -- Highlights: Via dichroism and birefringence of the vacuum by a strong laser wave, minicharged particles can be probed. The discovery potential is the highest in a vicinity of the first pair production threshold. As alternative observable, Raman scattered waves are put forward.

Villalba-Chvez, S., E-mail: selymv@gmail.com; Mller, C., E-mail: c.mueller@tp1.uni-duesseldorf.de

2013-12-15T23:59:59.000Z

109

Formation of silver nanoparticles inside a soda-lime glass matrix in the presence of a high intensity Ar{sup +} laser beam  

SciTech Connect

Formation and motion of the silver nanoparticles inside an ion-exchanged soda-lime glass in the presence of a focused high intensity continuous wave Ar{sup +} laser beam (intensity: 9.2 x 10{sup 4} W/cm{sup 2}) have been studied in here. One-dimensional diffusion equation has been used to model the diffusion of the silver ions into the glass matrix, and a two-dimensional reverse diffusion model has been introduced to explain the motion of the silver clusters and their migration toward the glass surface in the presence of the laser beam. The results of the mentioned models were in agreement with our measurements on thickness of the ion-exchange layer by means of optical microscopy and recorded morphology of the glass surface around the laser beam axis by using a Mirau interferometer. SEM micrographs were used to extract the size distribution of the migrated silver particles over the glass surface.

Niry, M. D.; Khalesifard, H. R. [Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731 (Iran, Islamic Republic of); Optics Research Center, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731 (Iran, Islamic Republic of); Mostafavi-Amjad, J.; Ahangary, A. [Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731 (Iran, Islamic Republic of); Azizian-Kalandaragh, Y. [Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan 45137-66731 (Iran, Islamic Republic of); Department of Physics, University of Mohaghegh Ardabili (UMA), P.O. Box 179, Ardabil (Iran, Islamic Republic of)

2012-02-01T23:59:59.000Z

110

Neutron Halo Isomers in Stable Nuclei and their Possible Application for the Production of Low Energy, Pulsed, Polarized Neutron Beams of High Intensity and High Brilliance  

E-Print Network (OSTI)

We propose to search for neutron halo isomers populated via $\\gamma$-capture in stable nuclei with mass numbers of about A=140-180 or A=40-60, where the $4s_{1/2}$ or $3s_{1/2}$ neutron shell model state reaches zero binding energy. These halo nuclei can be produced for the first time with new $\\gamma$-beams of high intensity and small band width ($\\le$ 0.1%) achievable via Compton back-scattering off brilliant electron beams thus offering a promising perspective to selectively populate these isomers with small separation energies of 1 eV to a few keV. Similar to single-neutron halo states for very light, extremely neutron-rich, radioactive nuclei \\cite{hansen95,tanihata96,aumann00}, the low neutron separation energy and short-range nuclear force allows the neutron to tunnel far out into free space much beyond the nuclear core radius. This results in prolonged half lives of the isomers for the $\\gamma$-decay back to the ground state in the 100 ps-$\\mu$s range. Similar to the treatment of photodisintegration of the deuteron, the neutron release from the neutron halo isomer via a second, low-energy, intense photon beam has a known much larger cross section with a typical energy threshold behavior. In the second step, the neutrons can be released as a low-energy, pulsed, polarized neutron beam of high intensity and high brilliance, possibly being much superior to presently existing beams from reactors or spallation neutron sources.

D. Habs; M. Gross; P. G. Thirolf; P. Bni

2010-09-30T23:59:59.000Z

111

Microsoft Word - Groundwater Discharge Permit  

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

State Renews Groundwater Discharge Permit for WIPP CARLSBAD, N.M., September 11, 2008 - The New Mexico Environment Department (NMED) has renewed the U.S. Department of Energy's (DOE) Waste Isolation Pilot Plant (WIPP) groundwater discharge permit until 2013. The permit regulates the discharge of water from WIPP facilities and operations to lined ponds, which protect groundwater resources. The permit allows WIPP to discharge domestic wastewater, non-hazardous wastewater and storm water into 13 on-site, synthetically-lined ponds. The new permit also provides for increased daily discharge volumes to allow more flexibility in plant operations. "This permit is the result of a positive year-long effort with the New Mexico Groundwater Quality Bureau," said Jody Plum, DOE Carlsbad Field Office Permitting and

112

Differential pressure pin discharge apparatus  

DOE Patents (OSTI)

Disclosed is a discharge assembly for allowing elongate pins to be discharged from an area of relatively low pressure to an area of relatively greater pressure. The discharge assembly includes a duck valve having a lip piece made of flexible material. The flexible lip piece responds to a fluctuating pressure created downstream by an aspirator. The aspirator reduces the downstream pressure sensed by the duck valve when the discharge assembly is in the open position. This allows elongate pins to be moved through the duck valve with no backflow because the aspirator pressure is less than the pressure in the low pressure area from which the pins originate. Closure of the assembly causes the aspirator static pressure to force the flexible duck valve lip piece into a tightly sealed position also preventing backflow. The discharge assembly can be easily controlled using a single control valve which blocks the flow of aspirator gas and closes the pin passageway extending through the assembly.

Oakley, David J. (Richland, WA)

1987-01-01T23:59:59.000Z

113

EPA - National Pollutant Discharge Elimination System General...  

Open Energy Info (EERE)

search OpenEI Reference LibraryAdd to library PermittingRegulatory Guidance - GuideHandbook: EPA - National Pollutant Discharge Elimination System General Permit for Discharges...

114

Industrial Discharge Permits (District of Columbia)  

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

All businesses and government agencies discharging process wastewater to the public sewer system must report their activities to DC Water's Pretreatment Center. Wastewater discharge permits are...

115

Groundwater Discharge Permit and Registration (New Hampshire)  

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

The Groundwater Discharge Permitting and Registration Program seeks to protect groundwater quality by establishing standards, criteria, and procedures for wastewater discharges. The program...

116

Steam in the Ring Discharge  

Science Journals Connector (OSTI)

The behaviour of steam and its decomposition products in the ring discharge has been examined. Dry hydrogen is not dissociated. The production of atomic hydrogen is dependent upon the presence of steam which dissociates into hydroxyl and atomic hydrogen. A secondary source of atomic hydrogen is then afforded by the interaction of hydroxyl with molecular hydrogen. The escape from the discharge of atomic hydrogen, a long-lived species, favours the dissociation of steam. Mercury vapour, on the other hand, inhibits the formation of atomic hydrogen and thus leads to a high equilibrium steam concentration. Unlike dry hydrogen, dry oxygen is dissociated into atoms, but these have a short life as such and recombine in the discharge to form molecular oxygen and ozone. The reaction mechanisms occurring in the discharge are discussed in the light of spectrographic results.

G I Finch

1949-01-01T23:59:59.000Z

117

High-frequency discharges III  

Science Journals Connector (OSTI)

We start with a comparison of advantages and disadvantages of capacitively coupled discharges, by which it becomes obvious why and how the semiconductor industry has triggered the demand for high-density plasm...

Prof.Dr. Gerhard Franz

2009-01-01T23:59:59.000Z

118

Discharge cell for ozone generator  

DOE Patents (OSTI)

A discharge cell for use in an ozone generator is provided which can suppress a time-related reduction in ozone concentration without adding a catalytic gas such as nitrogen gas to oxygen gas as a raw material gas. The discharge cell includes a pair of electrodes disposed in an opposed spaced relation with a discharge space therebetween, and a dielectric layer of a three-layer structure consisting of three ceramic dielectric layers successively stacked on at least one of the electrodes, wherein a first dielectric layer of the dielectric layer contacting the one electrode contains no titanium dioxide, wherein a second dielectric layer of the dielectric layer exposed to the discharge space contains titanium dioxide in a metal element ratio of not lower than 10 wt %.

Nakatsuka, Suguru (Amagasaki, JP)

2000-01-01T23:59:59.000Z

119

Discharge produces hydrocarbons from coal  

Science Journals Connector (OSTI)

Discharge produces hydrocarbons from coal ... Studies of the reactions of coal in electric discharges by two chemists at the U.S. Bureau of Mines' Pittsburgh Coal Research Center may lead to improved ways of producing acetylene and other useful chemicals from coal. ... Other workers have produced high yields of acetylene from coal by extremely rapid pyrolysis using energy sources such as plasma jets, laser beams, arc-image reactors, and flash heaters. ...

1968-01-22T23:59:59.000Z

120

Relativistic self-focusing of ultra-high intensity X-ray laser beams in warm quantum plasma with upward density profile  

SciTech Connect

The results of a numerical study of high-intensity X-ray laser beam interaction with warm quantum plasma (WQP) are presented. By means of an upward ramp density profile combined with quantum factors specially the Fermi velocity, we have demonstrated significant relativistic self-focusing (RSF) of a Gaussian electromagnetic beam in the WQP where the Fermi temperature term in the dielectric function is important. For this purpose, we have considered the quantum hydrodynamics model that modifies refractive index of inhomogeneous WQPs with the inclusion of quantum correction through the quantum statistical and diffraction effects in the relativistic regime. Also, to better illustration of the physical difference between warm and cold quantum plasmas and their effect on the RSF, we have derived the envelope equation governing the spot size of X-ray laser beam in Q-plasmas. In addition to the upward ramp density profile, we have found that the quantum effects would be caused much higher oscillation and better focusing of X-ray laser beam in the WQP compared to that of cold quantum case. Our computational results reveal the importance of the use of electrons density profile and Fermi speed in enhancing self-focusing of laser beam.

Habibi, M., E-mail: habibi.physics@gmail.com [Young Researchers and Elite Club, Shirvan Branch, Islamic Azad University, Shirvan (Iran, Islamic Republic of); Ghamari, F. [Young Researchers and Elite Club, Khorramabad Branch, Islamic Azad University, Khorramabad (Iran, Islamic Republic of)

2014-05-15T23:59:59.000Z

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


121

Characterisation of a MeV Bremsstrahlung x-ray source produced from a high intensity laser for high areal density object radiography  

SciTech Connect

Results of an experiment to characterise a MeV Bremsstrahlung x-ray emission created by a short (<10 ps) pulse, high intensity (1.4 10{sup 19} W/cm{sup 2}) laser are presented. X-ray emission is characterized using several diagnostics; nuclear activation measurements, a calibrated hard x-ray spectrometer, and dosimeters. Results from the reconstructed x-ray energy spectra are consistent with numerical simulations using the PIC and Monte Carlo codes between 0.3 and 30 MeV. The intense Bremsstrahlung x-ray source is used to radiograph an image quality indicator (IQI) heavily filtered with thick tungsten absorbers. Observations suggest that internal features of the IQI can be resolved up to an external areal density of 85 g/cm{sup 2}. The x-ray source size, inferred by the radiography of a thick resolution grid, is estimated to be approximately 400 ?m (full width half maximum of the x-ray source Point Spread Function)

Courtois, C.; Compant La Fontaine, A.; Bazzoli, S.; Bourgade, J. L.; Gazave, J.; Lagrange, J. M.; Landoas, O.; Dain, L. Le; Pichoff, N. [CEA, DAM, DIF, F-91297 Arpajon (France)] [CEA, DAM, DIF, F-91297 Arpajon (France); Edwards, R.; Aedy, C. [AWE Plc., Aldermaston, Reading RG7 4PR (United Kingdom)] [AWE Plc., Aldermaston, Reading RG7 4PR (United Kingdom); Mastrosimone, D.; Pien, G.; Stoeckl, C. [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)] [Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)

2013-08-15T23:59:59.000Z

122

Continuation of full-scale three-dimensional numerical experiments on high-intensity particle and laser beam-matter interactions  

SciTech Connect

We present results from the grant entitled, ???¢????????Continuation of full-scale three-dimensional numerical experiments on high-intensity particle and laser beam-matter interactions.???¢??????? The research significantly advanced the understanding of basic high-energy density science (HEDS) on ultra intense laser and particle beam plasma interactions. This advancement in understanding was then used to to aid in the quest to make 1 GeV to 500 GeV plasma based accelerator stages. The work blended basic research with three-dimensions fully nonlinear and fully kinetic simulations including full-scale modeling of ongoing or planned experiments. The primary tool was three-dimensional particle-in-cell simulations. The simulations provided a test bed for theoretical ideas and models as well as a method to guide experiments. The research also included careful benchmarking of codes against experiment. High-fidelity full-scale modeling provided a means to extrapolate parameters into regimes that were not accessible to current or near term experiments, thereby allowing concepts to be tested with confidence before tens to hundreds of millions of dollars were spent building facilities. The research allowed the development of a hierarchy of PIC codes and diagnostics that is one of the most advanced in the world.

Mori, Warren, B.

2012-12-01T23:59:59.000Z

123

High intensity, short duration rotational grazing on reclaimed cool season tall fescue/legume pastures: II. Forage production, soil and plant tissue comparisons between grazed and ungrazed pastures  

SciTech Connect

The Midway Mine is located 50 miles south of Kansas City, Kansas straddling the border of Kansas and Missouri. The Pittsburg & Midway Coal Mining Co. mined the area until 1989, when the mine was closed and reclaimed. Approximately 3,750 acres were topsoiled and revegetated with a cool season tall fescue/legume pasture. High intensity, short duration rotational grazing has become the preferred management practice on these pastures. This study evaluated soil and vegetation data collected on 1,250 acres of pasture which was grazed by about 550 cow/calf units. Ongoing monitoring programs are evaluating the effects of rotational grazing. Soil testing includes macro-nutrients, micro-nutrients and microbial activity. Plant tissue analyses monitor levels of principal macro-nutrients and micro-nutrients. Vegetation monitoring consists of measuring forage production. Results were contrasted between pregrazing and postgrazing, and grazed and ungrazed pasture. Agronomic data from the grazed versus ungrazed treatments documented the following results: (1) higher levels of plant tissue nitrate, phosphorus, potassium, calcium, magnesium, sodium and sulfur; (2) higher microbial activity; (3) similar levels of soil nitrate, phosphorus, potassium, calcium, magnesium, sodium and sulfur; and (4) increased biomass production.

Carlson, K.E.; Erickson, W.R. [Pittsburg and Midway Coal Mining Co., Englewood, CO (United States); Bonine, R.C. [Agri-Resource Management, Inc., Gallup, NM (United States)

1995-09-01T23:59:59.000Z

124

Water purification by electrical discharges  

Science Journals Connector (OSTI)

There is a continuing need for the development of effective, cheap and environmentally friendly processes for the disinfection and degradation of organic pollutants from water. Ozonation processes are now replacing conventional chlorination processes because ozone is a stronger oxidizing agent and a more effective disinfectant without any side effects. However, the fact that the cost of ozonation processes is higher than chlorination processes is their main disadvantage. In this paper recent developments targeted to make ozonation processes cheaper by improving the efficiency of ozone generation, for example, by incorporation of catalytic packing in the ozone generator, better dispersion of ozone in water and faster conversion of dissolved ozone to free radicals are described. The synthesis of ozone in electrical discharges is discussed. Furthermore, the generation and plasma chemical reactions of several chemically active species, such as H2O2, O, OH, HO2, O3*, N2*, e-, O2-, O-, O2+, etc, which are produced in the electrical discharges are described. Most of these species are stronger oxidizers than ozone. Therefore, water treatment by direct electrical discharges may provide a means to utilize these species in addition to ozone. Much research and development activity has been devoted to achieve these targets in the recent past. An overview of these techniques and important developments that have taken place in this area are discussed. In particular, pulsed corona discharge, dielectric barrier discharge and contact glow discharge electrolysis techniques are being studied for the purpose of cleaning water. The units based on electrical discharges in water or close to the water level are being tested at industrial-scale water treatment plants.}

Muhammad Arif Malik; Abdul Ghaffar; Salman Akbar Malik

2001-01-01T23:59:59.000Z

125

Iodine monofluoride discharge laser investigation  

SciTech Connect

The results of an experimental investigation to improve the performance of a discharge-pumped iodine monofluoride laser are reported. Lasing was observed at 478.7, 484.7, 490.7, and 496.5 nm. Electrical measurements of the discharge characteristics permitted the energy flow in the circuit to be followed and laser efficiencies to be calculated. Parametric studies of gas mixtures were carried out. By optimizing several parameters, single-pulse lasing energies greater than 50 mJ were obtained.

Harris, D.G.; Blauer, J.A.; Hurlock, S.C. (Rockwell International, Rocketdyne Division, Canoga Park, CA (USA))

1990-10-15T23:59:59.000Z

126

Compact monolithic capacitive discharge unit  

DOE Patents (OSTI)

A compact monolithic capacitive discharge unit (CDU) is disclosed in which a thyristor switch and a flyback charging circuit are both sandwiched about a ceramic energy storage capacitor. The result is a compact rugged assembly which provides a low-inductance current discharge path. The flyback charging circuit preferably includes a low-temperature co-fired ceramic transformer. The CDU can further include one or more ceramic substrates for enclosing the thyristor switch and for holding various passive components used in the flyback charging circuit. A load such as a detonator can also be attached directly to the CDU.

Roesler, Alexander W. (Tijeras, NM); Vernon, George E. (Rio Rancho, NM); Hoke, Darren A. (Albuquerque, NM); De Marquis, Virginia K. (Tijeras, NM); Harris, Steven M. (Albuquerque, NM)

2007-06-26T23:59:59.000Z

127

State Waste Discharge Permit application, 183-N Backwash Discharge Pond  

SciTech Connect

As part of the Hanford Federal Facility Agreement and Consent Order negotiations (Ecology et al. 1994), the US Department of Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect groundwater would be subject to permitting under the structure of Chapter 173--216 (or 173--218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. As a result of this decision, the Washington State Department of Ecology and the US Department of Energy, Richland Operations Office entered into Consent Order No. DE91NM-177, (Ecology and DOE-RL 1991). The Consent Order No. DE91NM-177 requires a series of permitting activities for liquid effluent discharges. Liquid effluents on the Hanford Site have been classified as Phase I, Phase II, and Miscellaneous Streams. The Consent Order No. DE91NM-177 establishes milestones for State Waste Discharge Permit application submittals for all Phase I and Phase II streams, as well as the following 11 Miscellaneous Streams as identified in Table 4 of the Consent Order No. DE91NM-177.

Not Available

1994-06-01T23:59:59.000Z

128

VOLUME 88, NUMBER 7 P H Y S I C A L R E V I E W L E T T E R S 18 FEBRUARY 2002 Boosting Sonoluminescence with a High-Intensity Ultrasonic Pulse Focused  

E-Print Network (OSTI)

. Therefore, they are seriously limited by the narrow stability domain of the bubble, which results from Sonoluminescence with a High-Intensity Ultrasonic Pulse Focused on the Bubble by an Adaptive Array Jean Diderot, 10 rue Vauquelin, 75231 Paris, France (Received 29 June 2001; published 1 February 2002) Single-bubble

Forterre, Yoël

129

L&E: Adopt high-efficiency lighting for your parking lot | The Better  

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

lot lot Activities Technology Solutions Teams Lighting & Electrical Space Conditioning Plug & Process Loads Food Service Refrigeration Laboratories Energy Management & Information Systems Public Sector Teams Market Solutions Teams Adopt high-efficiency lighting for your parking lot Most parking lots are illuminated by older high-intensity discharge (HID) lighting technology without any energy-saving controls. New light-emitting diode (LED) technology can cut parking lot lighting energy bills by 40%, or much more with controls, while delivering additional benefits including long life, reduced maintenance costs, and improved lighting uniformity. The Lighting & Electrical team developed a performance specification to help building owners take advantage of these improved lighting

130

State Surface Water Discharge Permits (New Hampshire)  

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

Rules apply to the discharge of all pollutants from a point source to surface waters of the state. The rule does not apply to facilities that require both a state discharge permit and a federal...

131

Oklahoma Pollutant Discharge Elimination System Act (Oklahoma)  

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

The Department of Environmental Quality regulates facilities that discharge any pollutant into waters of the state. Permits must be acquired before the discharge of any pollutants into state waters...

132

Generator of Rainfall And Discharge Extremes  

E-Print Network (OSTI)

Generator of Rainfall And Discharge Extremes (GRADE) for the Rhine and Meuse basins Report RWS RIZA 2007.027 KNMI-publication 218 #12;Generator of Rainfall And Discharge Extremes (GRADE) for the Rhine.027 KNMI-publication 218 ISBN 9789036914062 #12;2Generator of Rainfall And Discharge Extremes (GRADE

Stoffelen, Ad

133

2, 22872325, 2005 discharge+sediment  

E-Print Network (OSTI)

HESSD 2, 2287­2325, 2005 Water discharge+sediment flux changes in Lower Mekon River X. X. Lu and R Sciences Water discharge and sediment flux changes in the Lower Mekong River X. X. Lu and R. Y. Siew­2325, 2005 Water discharge+sediment flux changes in Lower Mekon River X. X. Lu and R. Y. Siew Title Page

Paris-Sud XI, Université de

134

Cold cathode vacuum discharge tube  

DOE Patents (OSTI)

A cold cathode vacuum discharge tube, and method for making same, with an interior surface of the trigger probe coated with carbon deposited by carbon vapor deposition (CVD) or diamond-like carbon (DLC) deposition. Preferably a solid graphite insert is employed in the probe-cathode structure in place of an aluminum bushing employed in the prior art. The CVD or DLC probe face is laser scribed to allow resistance trimming to match available trigger voltage signals and to reduce electrical aging.

Boettcher, Gordon E. (Albuquerque, NM)

1998-01-01T23:59:59.000Z

135

Wastewater Discharge Program (Maine) | Department of Energy  

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

Wastewater Discharge Program (Maine) Wastewater Discharge Program (Maine) Wastewater Discharge Program (Maine) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Savings Category Buying & Making Electricity Program Info State Maine Program Type Siting and Permitting Provider Department of Environmental Protection The wastewater discharge regulations require that a license be obtained for the discharge of wastewater to a stream, river, wetland, or lake of the

136

Evaluation of instantaneous surface water discharge techniques  

SciTech Connect

To obtain accurate discharge data in any surface water monitoring program, the selection of an appropriate technique is essential. This paper examines five instantaneous discharge techniques most commonly used throughout the Appalachian coal fields. The techniques evaluated in this paper include: (1) dye-dilution; (2) cross-sectional area-velocity; (3) weir; (4) Manning's equation; and (5) direct discharge. Each of the instantaneous discharge techniques was evaluated in terms of: (1) initial equipment investment cost per discharge determination; (2) the advantages and disadvantages of each technique; and (3) the appropriate application of each technique. From this evaluation, it was apparent that a combination of several techniques are needed to determine a variety of discharges depending on the characteristics of the discharge point.

Buckles, J.D.

1984-12-01T23:59:59.000Z

137

Discharge quencher for Geiger counters  

SciTech Connect

A discharge quencher for halogen Geiger counters with a total powercutoff time after the appearance of an input signal of -70 nsec and an input sensitivity of -50 mV is described. The circuit permits parallel control of five STS-5 counters for a quenching-pulse duration of 4.5 usec. Counting responses with slopes to 0.131%/V and a plateau width of 100 V at a load of 60,000 pulses/sec are obtained for two STS-5 counters. The maximum load is 120,000 pulses/sec.

Mushev, R.K.

1986-03-01T23:59:59.000Z

138

Confined plasma gliding arc discharges  

Science Journals Connector (OSTI)

A confined plasma gliding arc is produced in a reactor with two-electrodes contained within a very narrow channel and water spray injected into the discharge. The evolution of pH and conductivity and the formation of hydrogen peroxide in pure water with different carrier gases and the decolourisation and mineralisation of an organic dye were compared with results for a non-confined three-electrode gliding arc reactor. The energy efficiency for the decolourisation of an organic blue dye in the confined reactor is twice that of the non-confined reactor. Significant levels of total organic carbon are removed in the confined plasma reactor.

Radu Burlica; Bruce R. Locke

2008-01-01T23:59:59.000Z

139

Oklahoma Pollutant Discharge Elimination System (OPDES) Standards  

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

Oklahoma Pollutant Discharge Elimination System (OPDES) Standards Oklahoma Pollutant Discharge Elimination System (OPDES) Standards (Oklahoma) Oklahoma Pollutant Discharge Elimination System (OPDES) Standards (Oklahoma) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor Industrial Installer/Contractor Investor-Owned Utility Local Government Municipal/Public Utility Nonprofit Retail Supplier Rural Electric Cooperative State/Provincial Govt Systems Integrator Tribal Government Utility Program Info State Oklahoma Program Type Environmental Regulations Provider Oklahoma Department of Environmental Quality This program of the Water Quality Division of the Department of Environmental Quality sets the point source, biosolids (sewage sludge), and stormwater permitting standards for discharges to the waters of the State

140

Oil and Hazardous Substance Discharge Preparedness (Minnesota)  

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

Anyone who owns or operates a vessel or facility that transports, stores, or otherwise handles hazardous wastes must take reasonable steps to prevent the discharge of those materials.

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


141

Characterization of electrical discharge machining plasmas.  

E-Print Network (OSTI)

??Electrical Discharge Machining (EDM) is a well-known machining technique since more than fifty years. Its principle is to use the eroding effect on the electrodes (more)

Descoeudres, Antoine

2006-01-01T23:59:59.000Z

142

Electro discharge machining for micro manufacturing.  

E-Print Network (OSTI)

??Due to the high precision and good surface quality that it can give, Electrical Discharge Machining (EDM) is potentially an important process for the fabrication (more)

Ivanov, Atanas

2008-01-01T23:59:59.000Z

143

Montana Pollutant Discharge Elimination System (MPDES) Webpage...  

Open Energy Info (EERE)

an overview of Montana's MPDES program for control point source discharges of wastewater. Author Montana Department of Environmental Quality Published State of Montana, Date...

144

CDPHE Industrial Individual Wastewater Discharge Permit Application...  

Open Energy Info (EERE)

Legal Document- Permit ApplicationPermit Application: CDPHE Industrial Individual Wastewater Discharge Permit ApplicationLegal Abstract Application provided by the Colorado...

145

California Waste Discharge Requirements Website | Open Energy...  

Open Energy Info (EERE)

Requirements Website Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: California Waste Discharge Requirements Website Abstract This website contains...

146

The Spore Discharge Mechanism of Common Ferns  

Science Journals Connector (OSTI)

...subtended by the annular arc from pedicel to spore...unchanged during the discharge process. The decrease...modulus of the annular arc and the range of spores...by means of a piezo-electric device in a stream of...Ingold, C. T., Spore Discharge in Land Plants, Oxford...

Allen L. King

1944-01-01T23:59:59.000Z

147

Plasma discharge self-cleaning filtration system  

DOE Patents (OSTI)

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

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

2014-07-22T23:59:59.000Z

148

Kinetic Effects In Hall Thruster Discharge  

E-Print Network (OSTI)

of a capacitive discharge. 4 capacitive discharge. For more info: V. Godyak, IEEE TPS 34, 755 (2006). #12 th twall interactions in Hall thrusters Large electron temperature andE JH~1cm secondary electron emission result in large particle and wall losses to the wall E , Jz z Br H~1cm 120 eV High SEE BN channel

Kaganovich, Igor

149

Helium corona-assisted air discharge  

SciTech Connect

Operation of atmospheric discharge of electronegative gases including air at low voltages yet without consuming any inert gas will enormously promote the application of non-thermal plasmas. By taking advantage of the low onset voltage for helium corona, air discharge was successfully launched at much reduced voltages with a needle-plate system partly contained in a helium-filled glass bulb--for a needle-plate distance of 12 mm, 1.0 kV suffices. Ultraviolet emission from helium corona facilitates the discharging of air, and the discharge current manifests distinct features such as relatively broad Trichel pulses in both half periods. This design allows safe and economic implementation of atmospheric discharge of electronegative gases, which will find a broad palette of applications in surface modification, plasma medicine and gas treatment, etc.

Jiang Nan; Gao Lei; Ji Ailing; Cao Zexian [Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2011-10-15T23:59:59.000Z

150

Contour dynamics model for electric discharges  

Science Journals Connector (OSTI)

We present an effective contour model for electrical discharges deduced as the asymptotic limit of the minimal streamer model for the propagation of electric discharges, in the limit of small electron diffusion. The incorporation of curvature effects to the velocity propagation and not to the boundary conditions is a feature and makes it different from the classical Laplacian growth models. The dispersion relation for a nonplanar two-dimensional discharge is calculated. The development and propagation of fingerlike patterns are studied and their main features quantified.

M. Arrays, M. A. Fontelos, and C. Jimnez

2010-03-18T23:59:59.000Z

151

Acoustic Emission Mapping of Discharges in Spark Erosion Machining.  

E-Print Network (OSTI)

?? Electrical discharge machining (EDM) is a non-conventional machining process utilizing a series of electrical discharges to melt and vaporize workpiece material. In a wire (more)

Smith, Craig

2012-01-01T23:59:59.000Z

152

Report of Waste Discharge application (Form 200) | Open Energy...  

Open Energy Info (EERE)

application (Form 200) Jump to: navigation, search OpenEI Reference LibraryAdd to library Form: Report of Waste Discharge application (Form 200) Abstract Persons discharging or...

153

Hydrothermal Heat Discharge In The Cascade Range, Northwestern...  

Open Energy Info (EERE)

Heat Discharge In The Cascade Range, Northwestern United States Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Hydrothermal Heat Discharge In...

154

WSDE Report: Wastewater Discharge Permits in Washington State...  

Open Energy Info (EERE)

Wastewater Discharge Permits in Washington State Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: WSDE Report: Wastewater Discharge Permits in Washington...

155

Glow discharge plasma deposition of thin films  

DOE Patents (OSTI)

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.

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

1984-05-29T23:59:59.000Z

156

Transition from Glow to Arc Discharge  

Science Journals Connector (OSTI)

... I HAVE suggested1 a mechanism to account for the occurrence of long electrical discharges in ... in electric fields which are only of the order of one per cent of those generally believed2 ...

CHAS. E. R. BRUCE

1948-04-03T23:59:59.000Z

157

Discharge dynamics of pin-to-plate dielectric barrier discharge at atmospheric pressure  

SciTech Connect

The discharge dynamics of pin-to-plate dielectric barrier discharge was studied in atmospheric helium at 20 kHz. The discharge was predominately ignited in positive half cycle of applied voltage with sinusoidal waveform. The temporal evolution of the discharge was investigated vertically along the discharge gap and radically on the dielectric surface by time resolved imaging. It is found that a discharge column with a diameter of 2 mm was ignited above the pin electrode and expanded toward a plate electrode. On the dielectric surface with space charge accumulation, plasma disk in terms of plasma ring was formed with radius up to 25 mm. The expansion velocity of plasma ring can reach a hypersonic speed of 3.0 km/s. The ionization wave due to electron diffusion is considered to be the mechanism for plasma ring formation and dynamics.

Sun Liqun [College of Science, Donghua University, Shanghai 201620 (China); Huang, Xiaojiang [College of Science, Donghua University, Shanghai 201620 (China); Member of Magnetic Confinement Fusion Research Center, Ministry of Education of the People's Republic of China, Shanghai 201620 (China); Zhang Jie [College of Science, Donghua University, Shanghai 201620 (China); State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620 (China); Zhang Jing; Shi, J. J. [College of Science, Donghua University, Shanghai 201620 (China); State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620 (China); Member of Magnetic Confinement Fusion Research Center, Ministry of Education of the People's Republic of China, Shanghai 201620 (China)

2010-11-15T23:59:59.000Z

158

Magnetic dipole discharges. II. Cathode and anode spot discharges and probe diagnostics  

SciTech Connect

The high current regime of a magnetron-type discharge has been investigated. The discharge uses a permanent magnet as a cold cathode which emits secondary electrons while the chamber wall or a grounded electrode serves as the anode. As the discharge voltage is increased, the magnet develops cathode spots, which are short duration arcs that provide copious electrons to increase the discharge current dramatically. Short (1 ?s), high current (200 A) and high voltage (750 V) discharge pulses are produced in a relaxation instability between the plasma and a charging capacitor. Spots are also observed on a negatively biased plane Langmuir probe. The probe current pulses are as large as those on the magnet, implying that the high discharge current does not depend on the cathode surface area but on the properties of the spots. The fast current pulses produce large inductive voltages, which can reverse the electrical polarity of the magnet and temporarily operate it as an anode. The discharge current may also oscillate at the frequency determined by the charging capacitor and the discharge circuit inductance. Each half cycle of high-current current pulses exhibits a fast (?10 ns) current rise when a spot is formed. It induces high frequency (10100 MHz) transients and ringing oscillations in probes and current circuits. Most probes behave like unmatched antennas for the electromagnetic pulses of spot discharges. Examples are shown to distinguish the source of oscillations and some rf characteristics of Langmuir probes.

Stenzel, R. L.; Urrutia, J. M. [Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States)] [Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States); Ionita, C.; Schrittwieser, R. [Institute for Ion Physics and Applied Physics, University of Innsbruck, A-6020 Innsbruck (Austria)] [Institute for Ion Physics and Applied Physics, University of Innsbruck, A-6020 Innsbruck (Austria)

2013-08-15T23:59:59.000Z

159

High-frequency, high-intensity photoionization  

Science Journals Connector (OSTI)

Two analytical methods for computing ionization by high-frequency fields are compared. Predicted ionization rates compare well, but energy predictions for the onset of ionization...

Reiss, H R

1996-01-01T23:59:59.000Z

160

Development of Indian High Intensity Proton Accelerator  

E-Print Network (OSTI)

· Brinkman, Director, US-DOE-OS met with Dr. Banerjee and Dr. Grover several time #12;Status: MOU: Fermilab The Fermilab Tevatron has now passed on the energy frontier to LHC, following 25 years as the highest energy particle collider in the world. Fermilab operates the highest power long baseline neutrino

Quigg, Chris

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


161

Magnetic dipole discharges. I. Basic properties  

SciTech Connect

A simple discharge is described which uses a permanent magnet as a cold cathode and the metallic chamber wall as an anode. The magnet's equator is biased strongly negative, which produces secondary electrons due to the impact of energetic ions. The emitted electrons are highly confined by the strong dipolar magnetic field and the negative potential in the equatorial plane of the magnet. The emitted electrons ionize near the sheath and produce further electrons, which drift across field lines to the anode while the nearly unmagnetized ions are accelerated back to the magnet. A steady state discharge is maintained at neutral pressures above 10{sup ?3} mbar. This is the principle of magnetron discharges, which commonly use cylindrical and planar cathodes rather than magnetic dipoles as cathodes. The discharge properties have been investigated in steady state and pulsed mode. Different magnets and geometries have been employed. The role of a background plasma has been investigated. Various types of instabilities have been observed such as sheath oscillations, current-driven turbulence, relaxation instabilities due to ionization, and high frequency oscillations created by sputtering impulses, which are described in more detail in companion papers. The discharge has also been operated in reactive gases and shown to be useful for sputtering applications.

Stenzel, R. L.; Urrutia, J. M. [Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States)] [Department of Physics and Astronomy, University of California, Los Angeles, California 90095-1547 (United States); Teodorescu-Soare, C. T.; Ionita, C.; Schrittwieser, R. [Institute for Ion Physics and Applied Physics, University of Innsbruck, A-6020 Innsbruck (Austria)] [Institute for Ion Physics and Applied Physics, University of Innsbruck, A-6020 Innsbruck (Austria)

2013-08-15T23:59:59.000Z

162

Discharge characteristics of atmospheric-pressure radio-frequency glow discharges with argon/nitrogen  

SciTech Connect

In this letter, atmospheric-pressure glow discharges in {gamma} mode with argon/nitrogen as the plasma-forming gas using water-cooled, bare copper electrodes driven by radio-frequency power supply at 13.56 MHz are achieved. The preliminary studies on the discharge characteristics show that, induced by the {alpha}-{gamma} coexisting mode or {gamma} mode discharge of argon, argon-nitrogen mixture with any mixing ratios, even pure nitrogen, can be employed to generate the stable {gamma} mode radio-frequency, atmospheric-pressure glow discharges and the discharge voltage rises with increasing the fraction of nitrogen in the argon-nitrogen mixture for a constant total gas flow rate.

Wang Huabo; Sun Wenting; Li Heping; Bao Chengyu; Gao Xing; Luo Huiying [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China); School of Public Health and Family Medicine, Capital University of Medical Sciences, Beijing 100069 (China); Beijing Center for Diseases Control and Prevention, Beijing 100013 (China)

2006-10-16T23:59:59.000Z

163

Discharge ignition characteristics of pulsed radio-frequency glow discharges in atmospheric helium  

Science Journals Connector (OSTI)

An experimental study of radio-frequency (15 MHz) glow discharges in atmospheric helium modulated by pulses with repetition frequency of 500 kHz and duty cycle of 6% and 8% is presented in this paper. In each discharge burst the discharge is restricted to operate in ignition phase with duration of one or two radio-frequency cycles. The ignition characteristics in terms of spatial-temporal evolution of discharge interelectrode structure and optical emission intensity are investigated by time resolved imaging. Optical emission intensities at lines of 706 and 777 nm are used to capture clearly the temporal evolution of energetic electrons and active specie of atom oxygen generated in discharge.

Jianjun Shi; Yeqing Cai; Jie Zhang; Ke Ding; Jing Zhang

2009-01-01T23:59:59.000Z

164

Discharge ignition characteristics of pulsed radio-frequency glow discharges in atmospheric helium  

SciTech Connect

An experimental study of radio-frequency (15 MHz) glow discharges in atmospheric helium modulated by pulses with repetition frequency of 500 kHz and duty cycle of 6% and 8% is presented in this paper. In each discharge burst, the discharge is restricted to operate in ignition phase with duration of one or two radio-frequency cycles. The ignition characteristics in terms of spatial-temporal evolution of discharge interelectrode structure and optical emission intensity are investigated by time resolved imaging. Optical emission intensities at lines of 706 and 777 nm are used to capture clearly the temporal evolution of energetic electrons and active specie of atom oxygen generated in discharge.

Shi Jianjun; Cai Yeqing; Zhang Jie; Ding Ke; Zhang Jing [State Key Lab for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, and College of Science, Donghua University, Shanghai 201620 (China)

2009-07-15T23:59:59.000Z

165

Central peaking of magnetized gas discharges  

SciTech Connect

Partially ionized gas discharges used in industry are often driven by radiofrequency (rf) power applied at the periphery of a cylinder. It is found that the plasma density n is usually flat or peaked on axis even if the skin depth of the rf field is thin compared with the chamber radius a. Previous attempts at explaining this did not account for the finite length of the discharge and the boundary conditions at the endplates. A simple 1D model is used to focus on the basic mechanism: the short-circuit effect. It is found that a strong electric field (E-field) scaled to electron temperature T{sub e}, drives the ions inward. The resulting density profile is peaked on axis and has a shape independent of pressure or discharge radius. This universal profile is not affected by a dc magnetic field (B-field) as long as the ion Larmor radius is larger than a.

Chen, Francis F. [Electrical Engineering Department, University of California, Los Angeles, California 90095 (United States)] [Electrical Engineering Department, University of California, Los Angeles, California 90095 (United States); Curreli, Davide [Department of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801 (United States)] [Department of Nuclear, Plasma and Radiological Engineering, University of Illinois at Urbana Champaign, Urbana, Illinois 61801 (United States)

2013-05-15T23:59:59.000Z

166

Characteristics of the Dense Plasma Focus Discharge  

Science Journals Connector (OSTI)

The dense plasma focus discharge is produced in a hydromagnetic coaxial plasma accelerator. The final heating and compression of the plasma is accomplished by a partial conversion of the stored magnetic energy residing in the region behind the current sheath to plasma energy. The electrical behavior of the discharge is examined to determine the fraction of the initial energy involved in mechanical sheath motion inductive storage in the accelerator and Ohmic losses associated with the external and plasma discharge. Many analysis of this kind of datum show no definite correlation between the energy converted and neutron production. Presumably this arises from a lack of information as to how the collapse uses this energy and to the amount of plasma ejected from the dense plasma region during the collapse. From soft x?ray pinhole and Schlieren photographs the collapse and the development of the dense plasma is unquestionably a two?dimensional pinch compression.

Joseph W. Mather; Paul J. Bottoms

1968-01-01T23:59:59.000Z

167

Influence of discharge gap on the discharge stability in a short vacuum arc ion source  

SciTech Connect

The influence of the discharge gap between cathode and anode on the discharge stability in a short vacuum arc (SVA) ion source is presented in this paper. Planar cathode and cylindrical hollow anode made of titanium are investigated. There is a great need in present accelerator injection research for SVA source to produce the small deviation of the ion current beam. Current research shows that increasing the short discharge gap can reduce the level of ion current deviation and ion charge deviation from 29% and 31% to 15% and 17%, respectively. A microplasma plume generation mechanism in SVA and scanning electron microscopic results can be used to explain this interesting phenomenon.

Chen, L. [Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Department of Engineering Physics, Tsinghua University, Beijing 100084 (China); Zhang, G. L.; Jin, D. Z.; Dai, J. Y. [Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang, Sichuan 621900 (China); Yang, L. [Institute of Nuclear Science and Technology, Louzhou University, Lanzhou, Gansu 730000 (China)

2012-02-15T23:59:59.000Z

168

Electrochemical and Electro-Discharge Machining with a Threshold Current  

Science Journals Connector (OSTI)

......machining and electro-discharge machining of a metal...problems in which the electric potential satisfies...ECM), electro-discharge machining (EDM...method of electrochemical arc machining (ECAM...depending upon the local electric current density. In......

A. A. LACEY; M. SHILLOR

1987-01-01T23:59:59.000Z

169

CONTROL OF AN ARC DISCHARGE BY MEANS OF A GRID  

Science Journals Connector (OSTI)

CONTROL OF AN ARC DISCHARGE BY MEANS OF A GRID Albert...Research Laboratory, General Electric Co., Schenectady , N. Y. CONTROL OF AN ARC DISCHARGE BY MEANS OF A GRID. | Research Laboratory, General Electric Co., Schenectady , N...

Albert W. Hull; Irving Langmuir

1929-01-01T23:59:59.000Z

170

Discharge convective instability as modifier of nonlinear hydrodynamic spectrum  

E-Print Network (OSTI)

Discharge source is considered as modifier of flow hydrodynamic spectrum. Characteristic frequency of nonlinear spectrum and spectrum power were determined under conditions of arc sliding discharge in supersonic flow. Two stages of discharge were defined: sliding stage and still stage. It was found that stage transition occurs due to convective instability of discharge. Fraction of sliding stage in overall discharge duration is determined by averaged current that is general stable discharge parameter. This phenomenon gives opportunity to control power of pressure fluctuations spectrum. Theoretical insight of field and hydrodynamic factors influencing on pulsations frequency was achieved. Hydrodynamic resistance of discharge region and holding cathode electric field turned out to be basic factors of frequency modification. Corresponding experimental verification was taken. Basic frequency law was determined for several discharge regimes.

Sergey Kamenshchikov

2012-04-26T23:59:59.000Z

171

Montana Facilities Which Do Not Discharge Process Wastewater...  

Open Energy Info (EERE)

Which Do Not Discharge Process Wastewater (MDEQ Form 2E) Jump to: navigation, search OpenEI Reference LibraryAdd to library Form: Montana Facilities Which Do Not Discharge Process...

172

A power supply unit for discharging the plasma electron source  

Science Journals Connector (OSTI)

A power supply unit for discharging a low-temperature plasma generator based on discharge in the crossed electric and magnetic fields is described. The unit operates in a stationary mode with a preset stabiliz...

D. A. Antonovich; V. A. Gruzdev; V. G. Zalesskii

173

Saddle-field glow-discharge deposition of amorphous semiconductors  

SciTech Connect

The authors present a dc saddle-field glow-discharge deposition procedure which combines the positive attributes of the conventional dc and rf glow-discharge techniques. Preliminary mass spectra analyses of both silane and methane glow-discharges demonstrates that ions constitute a significant fraction of the species reaching the film surface. Growth rate analyses suggest that ions play a significant role in the saddle-field glow-discharge deposition of amorphous semiconducting films.

Gaspari, F.; Sidhu, L.S.; O`Leary, S.K.; Zukotynski, S. [Univ. of Toronto, Ontario (Canada). Dept. of Electrical and Computer Engineering

1996-12-31T23:59:59.000Z

174

Continuous nanoparticle generation and assembly by atmospheric pressure arc discharge  

E-Print Network (OSTI)

Continuous nanoparticle generation and assembly by atmospheric pressure arc discharge Jesse J. Cole a dc arc discharge plasma. The particles are positively charged by the arc and form a room temperature precursor materials.5,6 High temperature plasmas in the form of dc arc discharges led to the discovery

Jacobs, Heiko O.

175

Frequency spectrum analysis of electromagnetic waves radiated by electrical discharges  

Science Journals Connector (OSTI)

In this study, we analyzed the frequency spectrum of the electromagnetic waves radiated by an electric discharge as a basic method for developing an on-line diagnostic technique for power equipment installed inside closed-switchboards. In order to simulate ... Keywords: closed-switchboard, electromagnetic shielding room, electromagnetic wave, frequency spectrum, local discharge, series arc discharge

Hyeon-Kyu Cha; Sun-Jae Kim; Dae-Won Park; Gyung-Suk Kil

2011-03-01T23:59:59.000Z

176

Multiobjective optimization of the dry electric discharge machining process  

E-Print Network (OSTI)

January 15, 2009 Abstract Dry Electric Discharge Machining (EDM) is an environment­friendly modification: Electric Discharge Machining (EDM), Dry EDM, Design of experiments, Multi­objective optimization, NSGA II;1 Introduction Electric Discharge Machining (EDM) is a thermo­electric process in which material removal takes

Paris-Sud XI, Université de

177

NOPM and Availability of Framework Document for HID Lamps  

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

8:48 Feb 27, 2012 8:48 Feb 27, 2012 Jkt 226001 PO 00000 Frm 00008 Fmt 4702 Sfmt 4702 E:\FR\FM\28FEP1.SGM 28FEP1 mstockstill on DSK4VPTVN1PROD with PROPOSALS Federal Register / Vol. 77, No. 39 / Tuesday, February 28, 2012 / Proposed Rules 11785 collections for particular program, except where required by statute. III. Questions for Comment The list below includes the questions about these reform ideas that address issues which are of greatest interest to OMB at this stage of the process. Comments addressing any other concerns, and other types of feedback, are also welcome. In addition, as was explained at the beginning of this notice, the public comments received by OMB will be posted on OMB's Web site and at http:// www.regulations.gov. Accordingly, please do not include in your comments

178

Gas mixture for diffuse-discharge switch  

DOE Patents (OSTI)

Gaseous medium in a diffuse-discharge switch of a high-energy pulse generator is formed of argon combined with a compound selected from the group consisting of CF/sub 4/, C/sub 2/F/sub 6/, C/sub 3/F/sub 8/, n-C/sub 4/F/sub 10/, WF/sub 6/, (CF/sub 3/)/sub 2/S and (CF/sub 3/)/sub 2/O.

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

1982-08-31T23:59:59.000Z

179

General Conditions Applicable to Water Discharge Permits and Procedures and  

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

General Conditions Applicable to Water Discharge Permits and General Conditions Applicable to Water Discharge Permits and Procedures and Criteria for Issuing Water Discharge Permits (Connecticut) General Conditions Applicable to Water Discharge Permits and Procedures and Criteria for Issuing Water Discharge Permits (Connecticut) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Connecticut Program Type Siting and Permitting Provider Department of Energy and Environmental Protection

180

Sensitive glow discharge ion source for aerosol and gas analysis  

DOE Patents (OSTI)

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.

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

2007-08-14T23:59:59.000Z

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


181

Analysis of radiofrequency discharges in plasma  

DOE Patents (OSTI)

Separation of laser optogalvanic signals in plasma into two components: (1) an ionization rate change component, and (2) a photoacoustic mediated component. This separation of components may be performed even when the two components overlap in time, by measuring time-resolved laser optogalvanic signals in an rf discharge plasma as the rf frequency is varied near the electrical resonance peak of the plasma and associated driving/detecting circuits. A novel spectrometer may be constructed to make these measurements. Such a spectrometer would be useful in better understanding and controlling such processes as plasma etching and plasma deposition. 15 figs.

Kumar, D.; McGlynn, S.P.

1992-08-04T23:59:59.000Z

182

Analysis of radiofrequency discharges in plasma  

DOE Patents (OSTI)

Separation of laser optogalvanic signals in plasma into two components: (1) an ionization rate change component, and (2) a photoacoustic mediated component. This separation of components may be performed even when the two components overlap in time, by measuring time-resolved laser optogalvanic signals in an rf discharge plasma as the rf frequency is varied near the electrical resonance peak of the plasma and associated driving/detecting circuits. A novel spectrometer may be constructed to make these measurements. Such a spectrometer would be useful in better understanding and controlling such processes as plasma etching and plasma deposition.

Kumar, Devendra (Baton Rouge, LA); McGlynn, Sean P. (Baton Rouge, LA)

1992-01-01T23:59:59.000Z

183

CX-000183: Categorical Exclusion Determination | Department of Energy  

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

83: Categorical Exclusion Determination 83: Categorical Exclusion Determination CX-000183: Categorical Exclusion Determination Illinois County McHenry CX(s) Applied: A9, A11, B5.1 Date: 11/11/2009 Location(s): McHenry County, Illinois Office(s): Energy Efficiency and Renewable Energy, Golden Field Office Energy Efficiency and Conservation Block Grant for: Daylighting, Occupancy Sensors, Administration Building - LED (light-emitting diode) Parking Lot Lighting, Annex A - Replace Hot Water Boiler, Annex A - Window Film, Department of Transportation Building - Skylights, Department of Transporation Building - HID (high intensity discharge) to T8 Fluorescent with Occupancy Sensors, Department of Transportation Building - Solar Wall, Government Center - LED Jail Cell Fixtures, Government Center - Parking Lot

184

Page not found | Department of Energy  

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

61 - 8070 of 28,905 results. 61 - 8070 of 28,905 results. Download CX-003685: Categorical Exclusion Determination Photo Reactor for Growing Algae from Municipal Waste Water for Carbon Dioxide Capture CX(s) Applied: A1, B3.6 Date: 09/01/2010 Location(s): Allentown, Pennsylvania Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-003685-categorical-exclusion-determination Download CX-003524: Categorical Exclusion Determination Energy Efficient Street Lighting Changeover - Light-Emitting Diode (LED)/High Intensity Discharge (HID) CX(s) Applied: A1, A9, B1.3, B5.1 Date: 08/26/2010 Location(s): Oak Harbor, Ohio Office(s): Electricity Delivery and Energy Reliability, National Energy Technology Laboratory http://energy.gov/nepa/downloads/cx-003524-categorical-exclusion-determination

185

CX-004636: Categorical Exclusion Determination | Department of Energy  

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

6: Categorical Exclusion Determination 6: Categorical Exclusion Determination CX-004636: Categorical Exclusion Determination Texas- City- Waco CX(s) Applied: B1.32, B2.5, B5.1 Date: 11/30/2010 Location(s): Waco, Texas Office(s): Energy Efficiency and Renewable Energy Energy Efficiency and Conservation Block Grant Program. 1) Installation of new heating, ventilation, and air conditioning system in New Police Building (former Medical Tower), 2) replace windows or replace gaskets in windows of New Police Building, 3) lighting upgrades to 23 existing city buildings with energy efficient lighting, and 4) replace city of Waco high intensity discharge (HID) street lighting with light-emitting diode lighting. DOCUMENT(S) AVAILABLE FOR DOWNLOAD CX-004636.pdf More Documents & Publications CX-004632: Categorical Exclusion Determination

186

Categorical Exclusion Determinations: B5.1 | Department of Energy  

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

26, 2010 26, 2010 CX-003526: Categorical Exclusion Determination LED (Light-Emitting Diode) Street Light Retrofit CX(s) Applied: A1, A9, B1.3, B3.6, B5.1 Date: 08/26/2010 Location(s): Lorain County, Ohio Office(s): Electricity Delivery and Energy Reliability, National Energy Technology Laboratory August 26, 2010 CX-003525: Categorical Exclusion Determination Green Buildings Retrofit CX(s) Applied: B1.4, B5.1 Date: 08/26/2010 Location(s): Hopewell, Virginia Office(s): Energy Efficiency and Renewable Energy, National Energy Technology Laboratory August 26, 2010 CX-003524: Categorical Exclusion Determination Energy Efficient Street Lighting Changeover - Light-Emitting Diode (LED)/High Intensity Discharge (HID) CX(s) Applied: A1, A9, B1.3, B5.1 Date: 08/26/2010 Location(s): Oak Harbor, Ohio

187

The Potential Field in and around a Gas Discharge, and Its Influence on the Discharge Mechanism  

Science Journals Connector (OSTI)

In the first part of the paper, results on the spatial extension of cathode and anode fall regions in carbon arcs are reported. Potential-probe measurements reveal that the potential drop in front of either electrode is confined to less than one tenth of a millimeter. In the second part of the paper, the distortion of the potential field in and around any discharge, as caused by the non-uniform space charge distribution in the discharge, is discussed for the cases of a low current carbon arc and a negative point corona; for the latter case use was made of data by Loeb. The potential field distortions result in radial electric fields which, depending on their polarity, seem to hinder or support the radial expansion of the discharge. Potential-probe measurements in low and high current carbon arcs are in good agreement with this theoretical analysis and prove the transitional region between the distorted potential field in the arc and the undistorted potential field outside of the discharge to be a fairly thin one.

W. Finkelnburg and S. M. Segal

1951-08-01T23:59:59.000Z

188

DC Discharge Studies Using PIC-MCC: Unmagnetized Glow Discharge Theory Jeff Hammel & John Verboncoeur  

E-Print Network (OSTI)

in Gases. John Wiley and Sons, Inc., New York, 1939. · Yuri P. Raizer. Gas Discharge Physics. Springer-dimensional bounded plasma simulation codes. Journal of Computational Physics, 131:149-163, 1997. · John P bounded plasma simulation codes. Journal of Computational Physics, 104:321-328, 1993. · John P

Wurtele, Jonathan

189

Hydrothermal Heat Discharge In The Cascade Range, Northwestern United  

Open Energy Info (EERE)

Page Page Edit History Facebook icon Twitter icon » Hydrothermal Heat Discharge In The Cascade Range, Northwestern United States Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Hydrothermal Heat Discharge In The Cascade Range, Northwestern United States Details Activities (3) Areas (1) Regions (0) Abstract: Hydrothermal heat discharge in the Cascade Range includes the heat discharged by thermal springs, by "slightly thermal" springs that are only a few degrees warmer than ambient temperature, and by fumaroles. Thermal-spring heat discharge is calculated on the basis of chloride-flux measurements and geothermometer temperatures and totals ~ 240 MW in the U.S. part of the Cascade Range, excluding the transient post-1980 discharge

190

Point Source Discharges to Surface Waters (North Carolina) | Department of  

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

Point Source Discharges to Surface Waters (North Carolina) Point Source Discharges to Surface Waters (North Carolina) Point Source Discharges to Surface Waters (North Carolina) < Back Eligibility Commercial Industrial Construction Transportation Savings Category Buying & Making Electricity Program Info State North Carolina Program Type Siting and Permitting Provider Department of Environment and Natural Resources This rule requires permits for control of sources of water pollution by providing the requirements and procedures for application and issuance of state National Pollutant Discharge Elimination System (NPDES) permits for a discharge from an outlet, point source, or disposal system discharging to the surface waters of the state, and for the construction, entering a contract for construction, and operation of treatment works with such a

191

Notice of Intent (NOI) for Storm Water Discharges Associated with  

Open Energy Info (EERE)

Intent (NOI) for Storm Water Discharges Associated with Intent (NOI) for Storm Water Discharges Associated with Construction Activities under TPDES General Permit (TXR150000) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Reference Material: Notice of Intent (NOI) for Storm Water Discharges Associated with Construction Activities under TPDES General Permit (TXR150000) Details Activities (0) Areas (0) Regions (0) Abstract: Unavailable Author(s): Unknown Published: Texas Commission on Environmental Quality, Date Unknown Document Number: Unavailable DOI: Unavailable Source: View Original Document Retrieved from "http://en.openei.org/w/index.php?title=Notice_of_Intent_(NOI)_for_Storm_Water_Discharges_Associated_with_Construction_Activities_under_TPDES_General_Permit_(TXR150000)&oldid=598006"

192

Design of a high precision desktop wire electrical discharge machine.  

E-Print Network (OSTI)

??This thesis discusses the design of a wire electrical discharge machine that is small enough to be deemed a desktop machine that achieves sub micron (more)

Dunlop, David James

2010-01-01T23:59:59.000Z

193

Cathode fall measurement in a dielectric barrier discharge in helium  

SciTech Connect

A method based on the zero-length voltage extrapolation is proposed to measure cathode fall in a dielectric barrier discharge. Starting, stable, and discharge-maintaining voltages were measured to obtain the extrapolation zero-length voltage. Under our experimental conditions, the zero-length voltage gave a cathode fall of about 185 V. Based on the known thickness of the cathode fall region, the spatial distribution of the electric field strength in dielectric barrier discharge in atmospheric helium is determined. The strong cathode fall with a maximum field value of approximately 9.25 kV/cm was typical for the glow mode of the discharge.

Hao, Yanpeng; Zheng, Bin; Liu, Yaoge [School of Electric Power, South China University of Technology, Guangzhou 510640 (China)] [School of Electric Power, South China University of Technology, Guangzhou 510640 (China)

2013-11-15T23:59:59.000Z

194

The effect of riverine discharge on biogeochemical processes in ...  

Science Journals Connector (OSTI)

A prolonged drought decreased river discharge, altered the salinity gradient in the estuary, and profoundly affected anaerobic respiratory processes in the...

195

Fiber optic diagnostic techniques for the electrical discharge machining process.  

E-Print Network (OSTI)

??Plasma sparks from an electrical discharge machining phics. (EDM) process were observed using fiber optics positioned the dielectric oil. New measurement techniques were developed to (more)

Pillans, Brandon William

2012-01-01T23:59:59.000Z

196

Contact glow discharge electrolysis for liquid waste processing  

E-Print Network (OSTI)

for an alka- line water electrolysis at a small pin verticaldischarge electrolysis applied to waste water treatment.water treatment induced by plasma with contact glow discharge electrolysis.

Sharma, Neeraj

2014-01-01T23:59:59.000Z

197

WAC - 173 - 221A - Wastewater Discharge Standards and Effluent...  

Open Energy Info (EERE)

Wastewater Discharge Standards and Effluent Limitations Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- RegulationRegulation: WAC - 173 - 221A -...

198

WAC - 173 - 221 - Discharge Standards and Effluent Limitations...  

Open Energy Info (EERE)

WAC - 173 - 221 - Discharge Standards and Effluent Limitations for Domestic Wastewater Facilities Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document-...

199

File:CDPHE Industrial Individual Wastewater Discharge Permit...  

Open Energy Info (EERE)

Industrial Individual Wastewater Discharge Permit Application.pdf Jump to: navigation, search File File history File usage Metadata File:CDPHE Industrial Individual Wastewater...

200

EPA - Ground Water Discharges (EPA's Underground Injection Control...  

Open Energy Info (EERE)

EPA - Ground Water Discharges (EPA's Underground Injection Control Program) webpage Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: EPA - Ground Water...

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


201

Vacuum ultra-violet emission of plasma discharges with high Xe partial pressure using a cathode protective layer with high secondary electron emission  

SciTech Connect

In this work, the mechanism of the vacuum ultra-violet (VUV) emission of plasma discharges, with high Xe partial pressure and high ion-induced secondary electrons emission protective layer, is studied by measuring the VUV light emission directly and comparing it with two-dimensional simulations. From the panel measurement, we find that the high intensity of excimer VUV mainly contributes to the high luminous efficacy of SrCaO-plasma display panels (PDP) at a low sustain voltage. The unchanged Xe excitation efficiency indicates that the electron temperature is not decreased by the high secondary electrons emission protective layer, even though the sustain voltage is much lower. From the two-dimensional simulations, we can find that the ratio of excimer VUV to resonant VUV, which is determined by the collision rate in the discharge, is only significantly affected by the Xe partial pressure, while it is independent of the sustain voltage and the secondary-electrons-emission capability of protective layer. The unchanged average electron energy at the moment when the electric field becomes maximum confirms that the improvement of the VUV production efficiency mainly is attributed to the increase in electron heating efficiency of a PDP with high ion-induced secondary electrons emission protective layer. Combining the experimental and the simulation results, we conclude about the mechanism by which the VUV production is improved for the plasma display panel with a high Xe partial pressure and a cold cathode with high ion-induced secondary electrons emission.

Zhu, Di [School of Electronics and Information Engineering, Tianjin Polytechnic University, Tianjin (China); Song, Le, E-mail: songle@tju.edu.cn [State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin (China); Zhang, Xiong [School of Electronic Science and Engineering, Southeast University, Nanjing (China); Kajiyama, Hiroshi [Graduate School of Advanced Science of Matter, Hiroshima University, Higashi-hiroshima, Hiroshima (Japan)

2014-02-14T23:59:59.000Z

202

Energy parameters and stability of the discharge in a nonchain, self-sustained-discharge-pumped HF laser  

SciTech Connect

The generation and discharge are studied in a nonchain HF laser operating on mixtures of SF{sub 6} with hydrogen and hydrocarbons. The specific output energy of the laser is 8.8 J L{sup -1} (73 J L{sup -1} atm{sup -1}) and the total lasing efficiency is 5.5%. It is shown that the formation and maintaining of a volume discharge in self-sustained-discharge-pumped HF lasers with a large content of electronegative gases is caused by the accumulation of the volume discharge of negative ions in conducting regions. (letters)

Tarasenko, Viktor F; Orlovskii, Viktor M; Panchenko, Aleksei N [Institute of High Current Electronics, Siberian Branch, Russian Academy of Sciences, Tomsk (Russian Federation)

2001-12-31T23:59:59.000Z

203

State Waste Discharge Permit application for industrial discharge to land: 200 East Area W-252 streams  

SciTech Connect

This document constitutes the WAC 173-216 State Waste Discharge Permit application for six W-252 liquid effluent streams at the Hanford Site. Appendices B through H correspond to Section B through H in the permit application form. Within each appendix, sections correspond directly to the respective questions on the application form. The appendices include: Product or service information; Plant operational characteristics; Water consumption and waterloss; Wastewater information; Stormwater; Other information; and Site assessment.

Not Available

1993-12-01T23:59:59.000Z

204

Noise-based wavelet denoising technique for partial discharge measurement  

Science Journals Connector (OSTI)

For enhancement the insulation quality of medium voltage and high voltage power cables, on-site partial discharge (PD) diagnosis tests such as detection, location and identification are used to find defects or faults and assess ageing degree of the cable ... Keywords: discrete wavelet transform, frequency-tuned resonance, oscilating voltage wave, partial discharge, power cables, very low frequency

Zhou-Sheng Zhang; Deng-Ming Xiao

2008-06-01T23:59:59.000Z

205

Pinch spot formation in high atomic number z discharges  

Science Journals Connector (OSTI)

A nonlinear, quasi-two-dimensional model for pinch spot formation in radiation-dominated, high atomic number z pinches is presented that reproduces the experimental electrical and radiation characteristics. The high line-radiation rates of such discharges produce localized, high-density pinch spots in contrast to the spindle pinches predicted for hydrogenic discharges.

D. Mosher and D. Colombant

1992-04-27T23:59:59.000Z

206

Decomposition of Naphthalene by dc Gliding Arc Gas Discharge  

Science Journals Connector (OSTI)

Decomposition of Naphthalene by dc Gliding Arc Gas Discharge ... In the air and oxygen gliding arc discharges, the naphthalene degradation is mainly governed by reactions with oxygen-derived radicals. ... Therefore, the local electric field strength is relatively low in argon gliding arc plasma. ...

Liang Yu; Xiaodong Li; Xin Tu; Yu Wang; Shengyong Lu; Jianhua Yan

2009-12-11T23:59:59.000Z

207

Relationships among probability distributions of stream discharges in floods, climate,  

E-Print Network (OSTI)

Relationships among probability distributions of stream discharges in floods, climate, bed load of both follow power laws. The number N(Q) of days on which the discharge exceeds Q, or the number of the United States. To examine the effect of climate change on bed load transport and river incision, we

Mojzsis, Stephen J.

208

Waste not Discharged to Surface Waters (North Carolina) | Department of  

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

Waste not Discharged to Surface Waters (North Carolina) Waste not Discharged to Surface Waters (North Carolina) Waste not Discharged to Surface Waters (North Carolina) < Back Eligibility Commercial Industrial Construction Transportation Savings Category Alternative Fuel Vehicles Hydrogen & Fuel Cells Buying & Making Electricity Water Home Weatherization Solar Wind Program Info State North Carolina Program Type Siting and Permitting The rules in this Subchapter apply to all persons proposing to construct, alter, extend, or operate any sewer system, treatment works, disposal system, contaminates soil treatment system, animal waste management system, stormwater management system or residual disposal/utilization system which does not discharge to surface waters of the state, including systems which discharge waste onto or below land surface.

209

LANL achieves milestone on path to zero wastewater discharge  

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

LANL achieves milestone on wastewater discharge LANL achieves milestone on wastewater discharge LANL achieves milestone on path to zero wastewater discharge Industrial wastewater will be recycled as the result of a long-term strategy to treat wastewater rather than discharging it into the environment. January 20, 2012 Aerial view of Los Alamos National Laboratory Aerial view of Los Alamos National Laboratory. Contact Colleen Curran Communications Office (505) 664-0344 Email Improved compliance while recycling millions of gallons of industrial wastewater LOS ALAMOS, New Mexico, January 20, 2012-Millions of gallons of industrial wastewater will be recycled at Los Alamos National Laboratory as the result of a long-term strategy to treat wastewater rather than discharging it into the environment. The U. S. Environmental Protection Agency, which issues permits for

210

Radio frequency discharge with control of plasma potential distribution  

SciTech Connect

A RF discharge plasma generator with additional electrodes for independent control of plasma potential distribution is proposed. With positive biasing of this ring electrode relative end flanges and longitudinal magnetic field a confinement of fast electrons in the discharge will be improved for reliable triggering of pulsed RF discharge at low gas density and rate of ion generation will be enhanced. In the proposed discharge combination, the electron energy is enhanced by RF field and the fast electron confinement is improved by enhanced positive plasma potential which improves the efficiency of plasma generation significantly. This combination creates a synergetic effect with a significantly improving the plasma generation performance at low gas density. The discharge parameters can be optimized for enhance plasma generation with acceptable electrode sputtering.

Dudnikov, Vadim [Muons, Inc., Batavia, Illinois 60510 (United States); Dudnikov, A. [BINP, Novosibirsk 63090 (Russian Federation)

2012-02-15T23:59:59.000Z

211

State Waste Discharge Permit application: 200-E Powerhouse Ash Pit  

SciTech Connect

As part of the Hanford Federal Facility Agreement and Consent Order negotiations, the US Department and Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect groundwater would be subject to permitting under the structure of Chapter 173-216 (or 173-218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. This document constitutes the State Waste Discharge Permit application for the 200-E Powerhouse Ash Pit. The 200-E Powerhouse Ash Waste Water discharges to the 200-E Powerhouse Ash Pit via dedicated pipelines. The 200-E Ash Waste Water is the only discharge to the 200-E Powerhouse Ash Pit. The 200-E Powerhouse is a steam generation facility consisting of a coal-handling and preparation section and boilers.

Atencio, B.P.

1994-06-01T23:59:59.000Z

212

State Waste Discharge Permit application: 200-W Powerhouse Ash Pit  

SciTech Connect

As part of the Hanford Federal Facility Agreement and Consent Order negotiations; the US Department of Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect groundwater would be subject to permitting under the structure of Chapter 173-216 (or 173-218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. This document constitutes the State Waste Discharge Permit application for the 200-W Powerhouse Ash Pit. The 200-W Powerhouse Ash Waste Water discharges to the 200-W Powerhouse Ash Pit via dedicated pipelines. The 200-W Powerhouse Ash Waste Water is the only discharge to the 200-W Powerhouse Ash Pit. The 200-W Powerhouse is a steam generation facility consisting of a coal-handling and preparation section and boilers.

Atencio, B.P.

1994-06-01T23:59:59.000Z

213

A System-Level Electrostatic-Discharge-Protection Modeling Methodology for Time-  

E-Print Network (OSTI)

A System-Level Electrostatic-Discharge- Protection Modeling Methodology for Time- Domain Analysis. Index Terms--Electromagnetic compatibility (EMC), electrostatic discharge (ESD), modeling, system level precise simulations of electrostatic discharge (ESD) stress propagation on a printed circuit board (PCB

Boyer, Edmond

214

Wastewater Regulations for National Pollutant Discharge Elimination System  

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

Wastewater Regulations for National Pollutant Discharge Elimination Wastewater Regulations for National Pollutant Discharge Elimination System (NPDES) Permits, Underground Injection Control (UIC) Permits, State Permits, Water Quality Based Effluent Limitations and Water Quality Certification (Mississippi) Wastewater Regulations for National Pollutant Discharge Elimination System (NPDES) Permits, Underground Injection Control (UIC) Permits, State Permits, Water Quality Based Effluent Limitations and Water Quality Certification (Mississippi) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential

215

Experimental Investigation Of Atmospheric Pressure Surface Wave Discharges  

SciTech Connect

Microwave atmospheric pressure discharge in neon sustained by surface waves in a dielectric tube is considered. The plasma column length was measured versus absorbed microwave power for different discharge conditions. This gives a view on the wave propagation characteristics. The predicted dependence of discharge length on the total flux of wave power based on the modified model of non-equilibrium plasma is compared with experimental values. Moreover, we present results of spectroscopic investigations of the electron density. The electron density was determined using the method based on the Stark broadening of H{beta} spectral line. The spectroscopic results we shall use developing of a model of propagation of surface wave.

Czylkowski, D.; Jasinski, M.; Nowakowska, H.; Zakrzewski, Z. [The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-231 Gdansk (Poland)

2006-01-15T23:59:59.000Z

216

Electrohydraulic Discharge and Nonthermal Plasma for Water Treatment  

Science Journals Connector (OSTI)

The corona or corona-like system uses discharges of ?1 J/pulse, whereas the pulsed arc discharge uses energy of ?1 kJ/pulse and larger. ... AC, DC, and pulsed electric fields have been applied in conditions where the electrodes have been fully immersed in the liquid phase, where one electrode has been placed in an adjacent gas phase, and/or where arcing across the electrodes may occur. ... The electrohydraulic shock treatment of microorganisms was accomplished by discharging high-voltage electricity (8 to 15 kv.) across an electrode gap below the surface of aq. ...

B. R. Locke; M. Sato; P. Sunka; M. R. Hoffmann; J.-S. Chang

2005-12-31T23:59:59.000Z

217

Shoreline survey for unpermitted discharges to Galveston Bay  

SciTech Connect

The objectives of the study are to identify and map unpermitted point source discharges within selected shoreline segments of Galveston Bay and to develop a standard methodology and framework for future comprehensive shoreline surveys of the Galveston Bay system. The pilot study utilized low altitude aerial surveys and shallow draft small boat surveys to determine the extent of and to document locations of unpermitted discharges along 159 miles of bayou and bay shoreline. Nine different shoreline types were surveyed. Positions of discharges, both permitted and unpermitted were logged on to a personal computer data base management system and photographic documentation of both aerial and surface observations were catalogued.

Fay, R.R.; Sweet, S.; Wilson, R.J.

1991-08-01T23:59:59.000Z

218

Storm Water Discharge Permits (Wisconsin) | Department of Energy  

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

Storm Water Discharge Permits (Wisconsin) Storm Water Discharge Permits (Wisconsin) Storm Water Discharge Permits (Wisconsin) < Back Eligibility Agricultural Commercial Construction Developer Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info Start Date 08/2004 State Wisconsin Program Type Siting and Permitting Provider Department of Natural Resources Wisconsin's storm water runoff regulations include permitting requirements for construction sites and industrial facilities, including those

219

E-Print Network 3.0 - active liquid discharges Sample Search...  

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

discharge in synthetic air... Online at stacks.iop.orgJPhysD41035212 Abstract The barrier discharge in the coplanar ... Source: Greifswald, Ernst-Moritz-Arndt-Universitt...

220

Permit Program Regulating Discharge of Nondomestic Wastewater into a POTW (Ohio)  

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

Any significant industrial user is required to apply for and obtain an individual indirect discharge permit if they discharge water or waste into a publicly owned treatment works.

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


221

Electric-discharge intensification of the wool scouring process  

Science Journals Connector (OSTI)

The results of experiments on wool washing by high-voltage electric discharge in a liquid are presented. The efficiency of this method of washing is shown. The process of washing is considerably accelerated at...

A. A. Zubenko

2008-06-01T23:59:59.000Z

222

Plasma Grooving System Using Atmospheric Pressure Surface Discharge Plasma  

Science Journals Connector (OSTI)

To fabricate narrow front contact grooves on a single crystalline silicon solar cell, we carried out etching of a silicon nitride film on a silicon substrate using the surface discharge plasma operated at atmospheric

Toshiyuki Hamada; Tatsuya Sakoda; Masahisa Otsubo

2009-06-01T23:59:59.000Z

223

Radio-frequency glow discharge spectrometry:: A critical review  

Science Journals Connector (OSTI)

This paper presents a critical review of analytical radio frequency glow discharge spectrometry (rf-GDS). The historical foundations of rf-GDS are described, and current knowledge of the fundamental physics of analytical rf glow discharges is discussed. Additionally, instrumentation, methodologies, and applications of rf glow discharge optical emission spectrometry (rf-GDOES) and mass spectrometry (rf-GDMS) are reviewed. Although other rf-GDS techniques have appeared [e.g. rf glow discharge atomic absorption spectrophotometry (rf-GDAAS)], the emphasis is placed upon rf-GDOES and rf-GDMS, because they have received by far the most interest from analytical chemical metrologists. This review also provides explanations of some developments that are needed for further progress in the field of analytical rf-GDS.

Michael R. Winchester; Richard Payling

2004-01-01T23:59:59.000Z

224

Plasma of Electric Arc Discharge between Melted Electrodes  

Science Journals Connector (OSTI)

Plasma of electric arc discharge between melted electrodes was experimentally investigated. Diagnostics of electric arc plasma was carried out. Optical emission and ... in plasma tends to be located at the arc ax...

A.N. Veklich; I.L. Babich

2001-01-01T23:59:59.000Z

225

Problems of physical modeling of electric-arc discharges  

Science Journals Connector (OSTI)

Special features of physical modeling of high-current arc discharges are considered. It is shown that the employment of dimensionless criterial expressions makes it possible to establish only approximate simil...

O. I. Yas'ko

226

Effect of electric arc discharge on hypersonic blunt body drag  

Science Journals Connector (OSTI)

Experimental results on the effect of energy deposition using an electric arc discharge, upstream of a 60...half angle blunt cone configuration in a hypersonic flow is reported.Investigations involving drag meas...

K. Satheesh; G. Jagadeesh

2009-01-01T23:59:59.000Z

227

Spectral properties of a diffuse-constricted arc discharge  

Science Journals Connector (OSTI)

An extensive high-current electric discharge under atmospheric pressure is characterized by considerable instability, unless special measures for its stabilization are assumed (e.g., by the walls, electrodes, ...

V. O. German; A. P. Glinov; P. V. Kozlov; G. A. Lyubimov

2012-04-01T23:59:59.000Z

228

Velocity of the electric arc in a plasmatron discharge chamber  

Science Journals Connector (OSTI)

An experimental investigation of the velocity of a high-current arc with air injection in the discharge chamber of a coaxial sectioned plasmatron is described. The experiments showed that the velocity of the c...

A. S. Shaboltas

1969-09-01T23:59:59.000Z

229

CO2-laser gas discharges in narrow gaps  

Science Journals Connector (OSTI)

We have studied RF discharges as excitation mechanisms for distributed feedback (DFB) CO2 lasers. For CO2 laser plasmas the reduced electric fieldE/N has to be in a well-defined range. The reduced electric fields

W. Leuthard; F. K. Kneubhl; H. J. Schtzau

1989-01-01T23:59:59.000Z

230

Discharging a DC bus capacitor of an electrical converter system  

DOE Patents (OSTI)

A system and method of discharging a bus capacitor of a bidirectional matrix converter of a vehicle are presented here. The method begins by electrically shorting the AC interface of the converter after an AC energy source is disconnected from the AC interface. The method continues by arranging a plurality of switching elements of a second energy conversion module into a discharge configuration to establish an electrical current path from a first terminal of an isolation module, through an inductive element, and to a second terminal of the isolation module. The method also modulates a plurality of switching elements of a first energy conversion module, while maintaining the discharge configuration of the second energy conversion module, to at least partially discharge a DC bus capacitor.

Kajouke, Lateef A; Perisic, Milun; Ransom, Ray M

2014-10-14T23:59:59.000Z

231

Process characterization of Electrical Discharge Machining of highly doped silicon  

E-Print Network (OSTI)

Electrical Discharge Machining (EDM) is an advanced machining process that removes material via thermal erosion through a plasma arc. The machining process is accomplished through the application of high frequency current ...

Crawford, Gregory Allan

2012-01-01T23:59:59.000Z

232

WAC - 173 - 226 - Waste Discharge General Permit Program | Open...  

Open Energy Info (EERE)

Reference LibraryAdd to library Legal Document- RegulationRegulation: WAC - 173 - 226 - Waste Discharge General Permit ProgramLegal Published NA Year Signed or Took Effect 2002...

233

An ultra miniature pinch-focus discharge Leopoldo Soto1  

E-Print Network (OSTI)

Abstract As a way to investigate the minimum energy to produce a pinch plasma focus discharge, an ultra optimized plasma foci. It is interesting note that plasma parameters practically constant in plasma focus

Paris-Sud XI, Université de

234

A forevacuum pulse arc-discharge-based plasma electron source  

Science Journals Connector (OSTI)

An arc-discharge-based electron source is described, which is designed for forming a pulsed wideaperture electron beam in the forevacuum pressure range (4...2 in the submillisecond range of pulse durations. The c...

A. V. Kazakov; V. A. Burdovitsin; A. V. Medovnik

2013-11-01T23:59:59.000Z

235

Characteristics of discharge disruptions in the T-10 tokamak  

Science Journals Connector (OSTI)

The results of experimental studies of discharge disruptions in the T-10 tokamak at the limiting plasma density are presented. On the basis of measurements of the generated soft X-ray emission, for a group of ...

A. M. Stefanovskii; M. M. Dremin; A. M. Kakurin; A. Ya. Kislov

2013-06-01T23:59:59.000Z

236

DRIFT INSTABILITIES IN CYLINDRICAL DISCHARGES INVOLVING BOTH IONS AND ELECTRONS  

Science Journals Connector (OSTI)

...by the end-plates. This would be an effective means for generating thermonuclear fusion, provided the gas used in the central arc discharge is capable of thermonuclear fusion. When operated with the cylinder open-circuited, the efficiency...

Joseph Slepian

1964-01-01T23:59:59.000Z

237

Fiber optic diagnostic techniques for the electrical discharge machining process  

E-Print Network (OSTI)

FIBER OPTIC DIAGNOSTIC TECHNIQUES FOR THE ELECTRICAL DISCHARGE MACHINING PROCESS A Thesis by BRANDON WILLIAM PILLANS Submitted to the Office of Graduate Studies of Texas AB M University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August t 998 Major Subject: Electrical Engineering FIBER OPTIC DIAGNOSTIC TECHNIQUES FOR THE ELECTRICAL DISCHARGE MACHINING PROCESS A Thesis by BRANDON WILLIAM PILLANS Submitted to Texas A8M University in partial...

Pillans, Brandon William

2012-06-07T23:59:59.000Z

238

Experimental Study on Gasoline Reforming Assisted by Nonthermal Arc Discharge  

Science Journals Connector (OSTI)

The gasoline conversion efficiency decreased when the electric discharge regime was changing from continuous to gliding arc and from gliding to streamer. ... Compared with catalytic reformers, plasma devices have so far lower performances, which is explained by the early stage of research on nonthermal plasma reforming and the need of an external energy input (electricity). ... and design of the plasma reactor, composed of two gliding arc discharges in series, were detailed. ...

Jean-Damien Rollier; Jos Gonzalez-Aguilar; Guillaume Petitpas; Adeline Darmon; Laurent Fulcheri; Rudolf Metkemeijer

2007-12-06T23:59:59.000Z

239

Drilling Waste Management Fact Sheet: Discharge to Ocean  

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

Discharge to Ocean Discharge to Ocean Fact Sheet - Discharge to Ocean Past Practices In early offshore oil and gas development, drilling wastes were generally discharged from the platforms directly to the ocean. Until several decades ago, the oceans were perceived to be limitless dumping grounds. During the 1970s and 1980s, however, evidence mounted that some types of drilling waste discharges could have undesirable effects on local ecology, particularly in shallow water. When water-based muds (WBMs) were used, only limited environmental harm was likely to occur, but when operators employed oil-based muds (OBMs) on deeper sections of wells, the resulting cuttings piles created impaired zones beneath and adjacent to the platforms. At some North Sea locations, large piles of oil-based cuttings remain on the sea floor near the platforms. Piles of oil-based cuttings can affect the local ecosystem in three ways: by smothering organisms, by direct toxic effect of the drilling waste, and by anoxic conditions caused by microbial degradation of the organic components in the waste. Current regulatory controls minimize the impacts of permitted discharges of cuttings.

240

Improved plasma uniformity in a discharge system with electron injection  

SciTech Connect

We present the results of experiments leading to improvement in bulk plasma uniformity of a constricted-arc discharge system with electron injection. The steady-state discharge was in argon, at a gas pressure of 0.5 mTorr, and operated with a main discharge voltage between 20 and 100 V and current between 3 and 15 A. The radial plasma distribution was measured with a movable Langmuir probe. We find that geometric modification of the intermediate electrode exit aperture and the main discharge cathode add little to the plasma uniformity. Improved bulk plasma uniformity is observed when a special distributing grid electrode is used and the main discharge voltage is less than 20-30 V. The application of a weakly divergent magnetic field in the region of the intermediate electrode exit aperture decreases the plasma nonuniformity from 20% to 14% over a radial distance of 30 cm. The plasma uniformity was further improved by compensating the magnetic self-field of the injected electron beam by a reverse magnetic field produced with a special electrode compensator. It is shown that an increase in discharge current causes a proportional increase in back current in the distributing electrode. The approach allows a decrease in plasma nonuniformity from 20% to 13% over a radial distance of 30 cm.

Vizir, A. V.; Tyunkov, A. V.; Shandrikov, M. V. [Institute of High Current Electronics, Siberian Division, Russian Academy Science, Tomsk 634055 (Russian Federation)

2009-02-15T23:59:59.000Z

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


241

Interaction of a surface glow discharge with a gas flow  

SciTech Connect

A surface glow discharge in a gas flow is of particular interest as a possible tool for controlling the flow past hypersonic aircrafts. Using a hydrodynamic model of glow discharge, two-dimensional calculations for a kilovolt surface discharge in nitrogen at a pressure of 0.5 Torr are carried out in a stationary gas, as well as in a flow with a velocity of 1000 m/s. The discharge structure and plasma parameters are investigated near a charged electrode. It is shown that the electron energy in a cathode layer reaches 250-300 eV. Discharge is sustained by secondary electron emission. The influence of a high-speed gas flow on the discharge is considered. It is shown that the cathode layer configuration is flow-resistant. The distributions of the electric field and electron energy, as well as the ionization rate profile in the cathode layer, do not change qualitatively under the action of the flow. The basic effect of the flow's influence is a sharp decrease in the region of the quasineutral plasma surrounding the cathode layer due to fast convective transport of ions.

Aleksandrov, A. L., E-mail: a_alex@itam.nsc.ru; Schweigert, I. V. [Russian Academy of Sciences, Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch (Russian Federation)

2010-05-15T23:59:59.000Z

242

State waste discharge permit application, 200-E chemical drain field  

SciTech Connect

As part of the Hanford Federal Facility Agreement and Consent Order negotiations (Ecology et al. 1994), the US Department of Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect ground would be subject to permitting under the structure of Chapter 173-216 (or 173-218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. As a result of this decision, the Washington State Department of Ecology and the US Department of Energy, Richland Operations Office entered into Consent Order No. DE 91NM-177, (Ecology and DOE-RL 1991). The Consent Order No. DE 91NM-177 requires a series of permitting activities for liquid effluent discharges. This document presents the State Waste Discharge Permit (SWDP) application for the 200-E Chemical Drain Field. Waste water from the 272-E Building enters the process sewer line directly through a floor drain, while waste water from the 2703-E Building is collected in two floor drains, (north and south) that act as sumps and are discharged periodically. The 272-E and 2703-E Buildings constitute the only discharges to the process sewer line and the 200-E Chemical Drain Field.

Not Available

1994-06-01T23:59:59.000Z

243

Characteristics of the plasma jet by applying a pseudo-spark discharge , M.Watanabea+  

E-Print Network (OSTI)

is measured by using an electric probe technique. In this experiment of the discharge current is 10 k, because the discharge changes from the glow to arc mode in the high current discharge. Consequently of electrons along a line of electric force. and effects play an essential role in the discharge formation

Paris-Sud XI, Université de

244

Thermodynamics and Kinetics Analysis of Gasoline Reforming Assisted by Arc Discharge  

Science Journals Connector (OSTI)

Thermodynamics and Kinetics Analysis of Gasoline Reforming Assisted by Arc Discharge ... In the first one, the electric discharge is accounted for as a homogeneous energy source inside the whole reactor. ... kinetic schemes, without inclusion of specific plasma processes, is sufficient for simulation of H prodn. in discharges with hot plasmas, in particular, in low-current arc discharges. ...

Jean-Damien Rollier; Guillaume Petitpas; Jos Gonzalez-Aguilar; Adeline Darmon; Laurent Fulcheri; Rudolf Metkemeijer

2008-04-18T23:59:59.000Z

245

Capillary - Discharge Based Hand-Held Detector For Chemical Vapor Monitoring  

DOE Patents (OSTI)

A handheld/portable detector for chemical vapor monitoring includes a housing and a discharge chamber that is established therein. The plasma discharge has a relatively small volume, e.g., in the micro-liter range. A first electrode and a second electrode are disposed within the discharge chamber and a discharge gap is established therebetween. A sample gas tube is in fluid communication with the discharge chamber and provides a sample gas to the discharge chamber. Also, a plasma gas tube is in fluid communication with the discharge chamber and provides a plasma gas thereto. Accordingly, the plasma gas can be used to maintain microplasma discharge between the electrodes and the sample gas can be introduced into the microplasma discharge. A spectrometer optically connected to the handheld/portable detector is used to measure the radiation emitted by the sample gas when subjected to the microplasma discharge.

Duan, Yixiang (White Rock, NM)

2005-05-31T23:59:59.000Z

246

Rules and Regulations Pertaining to a User Fee System for Point Source Dischargers that Discharge Pollutants into the Waters of the State (Rhode Island)  

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

These regulations establish a user fee system for point source dischargers that discharge pollutants into the surface waters of the State. The funds from such fees are used by the Department of...

247

Discharge and emission parameters of a plasma electron source based on a discharge in crossed E H fields with various cathode materials  

Science Journals Connector (OSTI)

A plasma electron source (PES) based on a discharge in...E H...fields is developed and tested. The working gas is supplied to a quasi-closed PES discharge chamber, in which the conditions for effective ionizati...

A. P. Dostanko; D. A. Golosov

2009-10-01T23:59:59.000Z

248

Health risk assessment for radium discharged in produced waters  

SciTech Connect

Produced water generated during the production of oil and gas can contain enhanced levels of radium. This naturally occurring radioactive material (NORM) is discharged into freshwater streams, estuarine, coastal and outer continental shelf waters. Large volumes of produced waters are discharged to coastal waters along the Gulf Coast of Louisiana. The Gulf of Mexico is an important producer of fish and shellfish, and there is concern that radium discharged to coastal Louisiana could contaminate fish and shellfish used by people for food, and present a significant increase in cancer risk. This paper describes a screening-level assessment of the potential cancer risks posed by radium discharged to coastal Louisiana in oil-field produced waters. This screening analysis was performed to determine if a more comprehensive and realistic assessment is necessary, and because of the conservative assumptions embedded in the analysis overestimates the risk associated with the discharge of radium in produced waters. Two isotopes of radium (Ra-226 and Ra-228) are the radionuclides of most concern in produced water in terms of potential human health effects.

Hamilton, L.D.; Meinhold, A.F.; Nagy, J.

1991-01-01T23:59:59.000Z

249

Health risk assessment for radium discharged in produced waters  

SciTech Connect

Produced water generated during the production of oil and gas can contain enhanced levels of radium. This naturally occurring radioactive material (NORM) is discharged into freshwater streams, estuarine, coastal and outer continental shelf waters. Large volumes of produced waters are discharged to coastal waters along the Gulf Coast of Louisiana. The Gulf of Mexico is an important producer of fish and shellfish, and there is concern that radium discharged to coastal Louisiana could contaminate fish and shellfish used by people for food, and present a significant increase in cancer risk. This paper describes a screening-level assessment of the potential cancer risks posed by radium discharged to coastal Louisiana in oil-field produced waters. This screening analysis was performed to determine if a more comprehensive and realistic assessment is necessary, and because of the conservative assumptions embedded in the analysis overestimates the risk associated with the discharge of radium in produced waters. Two isotopes of radium (Ra-226 and Ra-228) are the radionuclides of most concern in produced water in terms of potential human health effects.

Hamilton, L.D.; Meinhold, A.F.; Nagy, J.

1991-12-31T23:59:59.000Z

250

Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters-  

Open Energy Info (EERE)

source source History View New Pages Recent Changes All Special Pages Semantic Search/Querying Get Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Facebook icon Twitter icon » Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Journal Article: Tracing And Quantifying Magmatic Carbon Discharge In Cold Groundwaters- Lessons Learned From Mammoth Mountain, Usa Details Activities (3) Areas (1) Regions (0) Abstract: A major campaign to quantify the magmatic carbon discharge in cold groundwaters around Mammoth Mountain volcano in eastern California was carried out from 1996 to 1999. The total water flow from all sampled cold springs was >=1.8_107 m3/yr draining an area that receives an estimated

251

Electron energy distribution function control in gas discharge plasmas  

SciTech Connect

The formation of the electron energy distribution function (EEDF) and electron temperature in low temperature gas discharge plasmas is analyzed in frames of local and non-local electron kinetics. It is shown, that contrary to the local case, typical for plasma in uniform electric field, there is the possibility for EEDF modification, at the condition of non-local electron kinetics in strongly non-uniform electric fields. Such conditions naturally occur in some self-organized steady state dc and rf discharge plasmas, and they suggest the variety of artificial methods for EEDF modification. EEDF modification and electron temperature control in non-equilibrium conditions occurring naturally and those stimulated by different kinds of plasma disturbances are illustrated with numerous experiments. The necessary conditions for EEDF modification in gas discharge plasmas are formulated.

Godyak, V. A. [Electrical Engineering and Computer Science Department, University of Michigan, Ann Arbor, Michigan 48109, USA and RF Plasma Consulting, Brookline, Massachusetts (United States)] [Electrical Engineering and Computer Science Department, University of Michigan, Ann Arbor, Michigan 48109, USA and RF Plasma Consulting, Brookline, Massachusetts (United States)

2013-10-15T23:59:59.000Z

252

Electric Discharge Machining (EDM) Projects (4584), 4/11/2012  

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

Electric Discharge Machining (EDM) Projects (4584) Electric Discharge Machining (EDM) Projects (4584) Program or Field Office: Y -12 Site Office Location(s) (Citv/Countv/State): Oak Ridge, Anderson County, Tennessee Proposed Action Description: Submit by E-mail The proposed action is to installation of oil submerged Electric Discharge Machining (EDM) for development and production use. Categorical Exclusion(s) Applied: 81.31 -Installation or relocation of machinery and equipment For the complete DOE National Environmental Policy Act regulations regarding categorical exclusions, including the full text of each categorical exclusion, see Subpart D of 10 CFR Part 1021. Regulatory Requirements in 10 CFR 1021.410(b): (See full text in regulation) [{Jrhe proposal fits within a class of actions that is listed in Appendix A orB to 10 CFR Part 1021, Subpart D.

253

State Waste Discharge Permit application, 100-N Sewage Lagoon  

SciTech Connect

As part of the Hanford Federal Facility Agreement and Consent Order negotiations (Ecology et al. 1994), the US Department of Energy, Richland Operations Office, the US Environmental Protection Agency, and the Washington State Department of Ecology agreed that liquid effluent discharges to the ground on the Hanford Site which affect groundwater or have the potential to affect groundwater would be subject to permitting under the structure of Chapter 173--216 (or 173--218 where applicable) of the Washington Administrative Code, the State Waste Discharge Permit Program. As a result of this decision, the Washington State Department of Ecology and the US Department of Energy, Richland Operations Office entered into Consent Order No. DE 91NM-177, (Ecology and DOE-RL 1991). This document constitutes the State Waste Discharge Permit application for the 100-N Sewage Lagoon. Since the influent to the sewer lagoon is domestic waste water, the State Waste Discharge Permit application for Public Owned Treatment Works Discharges to Land was used. Although the 100-N Sewage Lagoon is not a Public Owned Treatment Works, the Public Owned Treatment Works application is more applicable than the application for industrial waste water. The 100-N Sewage Lagoon serves the 100-N Area and other Hanford Site areas by receiving domestic waste from two sources. A network of sanitary sewer piping and lift stations transfers domestic waste water from the 100-N Area buildings directly to the 100-N Sewage Lagoon. Waste is also received by trucks that transport domestic waste pumped from on site septic tanks and holding tanks. Three ponds comprise the 100-N Sewage Lagoon treatment system. These include a lined aeration pond and stabilization pond, as well as an unlined infiltration pond. Both piped-in and trucked-in domestic waste is discharged directly into the aeration pond.

Not Available

1994-06-01T23:59:59.000Z

254

Regulations For State Administration Of The National Pollutant Discharge  

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

For State Administration Of The National Pollutant For State Administration Of The National Pollutant Discharge Elimination System (Arkansas) Regulations For State Administration Of The National Pollutant Discharge Elimination System (Arkansas) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Arkansas Program Type Siting and Permitting Provider Department of Environmental Quality The Regulations For State Administration Of The National Pollutant

255

High-power pulse modulator with ignitron discharger  

SciTech Connect

The high-power pulse modulator described here is used to produce spatial gaseous discharges and has an improved, controllable charging circuit, which permits a type ITR-4 ignitron discharger to be employed in a frequency mode as the basic commutator. The modulator is utilized in two modes: at a pulse repetition frequency of 50 Hz pulses are formed that have a duration of 25 usec and energies up to 3.5 kJ and at a frequency of 200 Hz, the pulses have a duration of -2 usec and energies up to 600 J. In all conditions the modulator operated stably with a wide range of load changes.

Anisimova, T.E.; Akkuratov, E.V.; Artemov, V.A.; Gromovenko, V.M.; Kalinin, V.P.; Nikonov, V.P.

1985-10-01T23:59:59.000Z

256

Multifunctional bulk plasma source based on discharge with electron injection  

SciTech Connect

A bulk plasma source, based on a high-current dc glow discharge with electron injection, is described. Electron injection and some special design features of the plasma arc emitter provide a plasma source with very long periods between maintenance down-times and a long overall lifetime. The source uses a sectioned sputter-electrode array with six individual sputter targets, each of which can be independently biased. This discharge assembly configuration provides multifunctional operation, including plasma generation from different gases (argon, nitrogen, oxygen, acetylene) and deposition of composite metal nitride and oxide coatings.

Klimov, A. S.; Medovnik, A. V. [Tomsk State University of Control Systems and Radioelectronics, Tomsk 634050 (Russian Federation); Tyunkov, A. V. [Tomsk State University of Control Systems and Radioelectronics, Tomsk 634050 (Russian Federation); Institute of High Current Electronics, Tomsk 634055 (Russian Federation); Savkin, K. P.; Shandrikov, M. V.; Vizir, A. V. [Institute of High Current Electronics, Tomsk 634055 (Russian Federation)

2013-01-15T23:59:59.000Z

257

Numerical simulation of carbon arc discharge for nanoparticle synthesis  

SciTech Connect

Arc discharge with catalyst-filled carbon anode in helium background was used for the synthesis of carbon nanoparticles. In this paper, we present the results of numerical simulation of carbon arc discharges with arc current varying from 10 A to 100 A in a background gas pressure of 68 kPa. Anode sublimation rate and current voltage characteristics are compared with experiments. Distribution of temperature and species density, which is important for the estimation of the growth of nanoparticles, is obtained. The probable location of nanoparticle growth region is identified based on the temperature range for the formation of catalyst clusters.

Kundrapu, M.; Keidar, M. [Department of Mechanical and Aerospace Engineering, George Washington University, Washington, DC 20052 (United States)

2012-07-15T23:59:59.000Z

258

Large area, surface discharge pumped, vacuum ultraviolet light source  

DOE Patents (OSTI)

Large area, surface discharge pumped, vacuum ultraviolet (VUV) light source is disclosed. A contamination-free VUV light source having a 225 cm{sup 2} emission area in the 240-340 nm region of the electromagnetic spectrum with an average output power in this band of about 2 J/cm{sup 2} at a wall-plug efficiency of approximately 5% is described. Only ceramics and metal parts are employed in this surface discharge source. Because of the contamination-free, high photon energy and flux, and short pulse characteristics of the source, it is suitable for semiconductor and flat panel display material processing. 3 figs.

Sze, R.C.; Quigley, G.P.

1996-12-17T23:59:59.000Z

259

Characteristics of electromagnetic interference generated during discharge of Mylar samples  

SciTech Connect

This paper discusses the measurements of the electromagnetic interference (EMI) generated during discharges of Mylar samples. The two components of EMI, the conducted emission and the radiated emission, are characterized by the replacement current and the radiated RF spectrum respectively. The measured radiated RF spectra reveal important information on the source of the electromagnetic radiation. The possible sources are the replacement current pulse and the discharged generated plasma. The scaling of the amplitudes of the EMI, as a function of the area of the test sample, is also discussed.

Leung, P.L.

1984-12-01T23:59:59.000Z

260

Electrostatic Discharge Sensitivity and Electrical Conductivity of Composite Energetic Materials  

SciTech Connect

Composite energetic material response to electrical stimuli was investigated and a correlation between electrical conductivity and ignition sensitivity was examined. The composites consisted of micrometer particle aluminum combined with another metal, metal oxide, or fluoropolymer. Of the nine tested mixtures, aluminum with copper oxide was the only mixture to ignite by electrostatic discharge with minimum ignition energy (MIE) of 25 mJ and an electrical conductivity of 1246.25 nS; two orders of magnitude higher than the next composite. This study showed a similar trend in MIE for ignition triggered by a discharged spark compared with a thermal hot wire source.

Michael A. Daniels; Daniel J. Prentice; Chelsea Weir; Michelle L. Pantoya; Gautham Ramachandran; Tim Dallas

2013-02-01T23:59:59.000Z

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


261

Hall current layer formation in arc discharge across magnetic field and transfer of fast ions out of discharge  

SciTech Connect

In the work presented here the geometry of the Hall current layer in a plasma of the vacuum arc discharge in the transverse magnetic field are analyzed. The extraction of an intense pure flux of fast ions generated in the cathode spots with the help of the Hall layer is discussed. Experiments on the arc source of carbon fast ions are described. The anode geometry adequate to the mechanism of the arc current passage through the transverse magnetic field is found out experimentally. Up to 70% of fast ions are extracted out of the arc discharge in the arched magnetic field. In experiments, the Hall current layer formation in the vacuum arc discharge across magnetic field is confidently confirmed.

Bender, E.D.; Dimov, G.I.; Krivenko, A.S.; Razorenov, V.V. [Lumiks PTI Ltd., Yarne 81223 (Israel); Budker Institute of Nuclear Physics, Novosibirsk 630090 (Russian Federation)

2006-01-15T23:59:59.000Z

262

Generation of Superthermal Electrons in a Micropinch Discharge  

SciTech Connect

Results are presented from experimental studies of the formation of the superthermal electron component in a micropinch discharge plasma. Radiative collapse in a Z-pinch is found to affect the energy of the accelerated electrons. That the radiative collapse has been reached may be inferred from the energy of the emitted hard X-ray photons.

Dolgov, A.N. [Moscow Engineering Physics Institute, Kashirskoe sh. 31, Moscow, 115409 (Russian Federation); Vikhrev, V.V. [Institute of Nuclear Fusion, Russian Research Centre Kurchatov Institute, pl. Akademika Kurchatova 1, Moscow, 123182 (Russian Federation)

2005-03-15T23:59:59.000Z

263

Discrimination between Jovian radio emissions and Saturn electrostatic discharges  

E-Print Network (OSTI)

vertical streaks in the dynamic spectrum of the Cassini/RPWS (Radio and Plasma Wave Science) receiver in the frequency range of a few MHz can be due to Jovian radio emissions or SEDs (Saturn electrostatic discharges caused by lightning in Saturn's atmosphere. We show a method for discriminating between these two

Gurnett, Donald A.

264

COLLISIONLESS ELECTRON HEATING IN RF GAS DISCHARGES: I. QUASILINEAR THEORY  

E-Print Network (OSTI)

COLLISIONLESS ELECTRON HEATING IN RF GAS DISCHARGES: I. QUASILINEAR THEORY Yu.M. Aliev1 , I an interest in mechanisms of electron heating and power deposition in the plasma main- tained by radio parameters. Due to the large value of the mean free path (MFP) the main mechanism of electron heating turns

Kaganovich, Igor

265

The Combination of Hydrogen and Oxygen by Electric Discharges  

Science Journals Connector (OSTI)

Combination of hydrogen and oxygen in the Geissler discharge, low-voltage arc and electrodeless discharge.It was noted that combination ceased to be explosive in equivalent volumes of the two gases at pressures below 3 cm. Logarithmic decrease in pressure was obtained in equivalent volumes in the Geissler discharge for constant current, whereas excess oxygen increased and excess hydrogen decreased the rate of combination, a similar change in rate having been noted by Lind in his alpha-ray experiments.Number of water molecules formed per pair of ions, as function of pressure.From a consideration of the number of ions present in the Geissler discharge it appears that the number, k, of water molecules formed per pair of ions at the lower pressures is much less than unity, but that it increases with increasing pressure and may approach the value obtained by Lind at somewhat higher pressures. The pressure at which k approximates unity is such that the time between molecular collisions is of the order of magnitude of the life of an excited hydrogen atom. This is consistent with the view that combination may be due to some similar type of excitation produced by a process secondary to ionization.

Rogers D. Rusk

1928-08-01T23:59:59.000Z

266

INTRODUCTION Weakly electric fish generate an electric organ discharge (EOD)  

E-Print Network (OSTI)

4196 INTRODUCTION Weakly electric fish generate an electric organ discharge (EOD) that results in an electric field that surrounds the fish's body. In Eigenmannia, the EOD is quasi-sinusoidal and when fish are in close proximity (~1m or less) their EODs interact. In the case of two nearby conspecifics, the combined

267

ICE SHEET SOURCES OF SEA LEVEL RISE AND FRESHWATER DISCHARGE  

E-Print Network (OSTI)

ICE SHEET SOURCES OF SEA LEVEL RISE AND FRESHWATER DISCHARGE DURING THE LAST DEGLACIATION Anders E the sources of sea level rise and freshwater dis- charge to the global oceans associated with retreat of ice­10 m sea level rise at 19.0­19.5 ka, sourced largely from Northern Hemisphere ice sheet retreat

Carlson, Anders

268

Radioactive Liquid Waste Treatment Facility Discharges in 2011  

SciTech Connect

This report documents radioactive discharges from the TA50 Radioactive Liquid Waste Treatment Facilities (RLWTF) during calendar 2011. During 2011, three pathways were available for the discharge of treated water to the environment: discharge as water through NPDES Outfall 051 into Mortandad Canyon, evaporation via the TA50 cooling towers, and evaporation using the newly-installed natural-gas effluent evaporator at TA50. Only one of these pathways was used; all treated water (3,352,890 liters) was fed to the effluent evaporator. The quality of treated water was established by collecting a weekly grab sample of water being fed to the effluent evaporator. Forty weekly samples were collected; each was analyzed for gross alpha, gross beta, and tritium. Weekly samples were also composited at the end of each month. These flow-weighted composite samples were then analyzed for 37 radioisotopes: nine alpha-emitting isotopes, 27 beta emitters, and tritium. These monthly analyses were used to estimate the radioactive content of treated water fed to the effluent evaporator. Table 1 summarizes this information. The concentrations and quantities of radioactivity in Table 1 are for treated water fed to the evaporator. Amounts of radioactivity discharged to the environment through the evaporator stack were likely smaller since only entrained materials would exit via the evaporator stack.

Del Signore, John C. [Los Alamos National Laboratory

2012-05-16T23:59:59.000Z

269

Treated wastewater discharged from municipal wastewater treatment plants (WWTPs) contains  

E-Print Network (OSTI)

Treated wastewater discharged from municipal wastewater treatment plants (WWTPs) contains to provide rapid, field-ready, inexpen- sive testing of these chemicals in wastewater is also needed estrogenic chemicals, and 2) develop sensor technology for the rapid measure- ment in wastewater of two key

Fay, Noah

270

Doppler effect for an optical discharge source of shock waves  

SciTech Connect

The Doppler effect for a moving pulsating optical discharge producing periodic shock waves is considered. The manifestations of the effect are limited by the wave merging mechanism. The validity conditions were found for the effect in the case of a pulsating source of shock waves. (interaction of laser radiation with matter. laser plasma)

Tishchenko, V N [Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk (Russian Federation)

2005-11-30T23:59:59.000Z

271

THE POSSIBILITY OF PRODUCING THERMONUCLEAR REACTIONS IN A GASEOUS DISCHARGE*  

E-Print Network (OSTI)

THE POSSIBILITY OF PRODUCING THERMONUCLEAR REACTIONS IN A GASEOUS DISCHARGE* I.V. Kurchatov of the energy of thermonuclear reactions. Physicists the world over are attracted by the extraordinarily interest- ing and very difficult task of controlling thermonuclear reactiom. Investigations in this field

272

Relationships Between Rate and Pattern of Unitary Discharges in Medial  

E-Print Network (OSTI)

Department of Psychobiology, School of Biological Sciences, University of California, Iwine, California 92664, a relatively brief sample of the single-unit record is often the basis for characterizing the stimulus-response charac- teristics of a unit. If unit discharge char- acteristics are invariant over time, a sample record

Weinberger, Norman M.

273

Condenser for extreme-UV lithography with discharge source  

DOE Patents (OSTI)

Condenser system, for use with a ringfield camera in projection lithography, employs quasi grazing-incidence collector mirrors that are coated with a suitable reflective metal such as ruthenium to collect radiation from a discharge source to minimize the effect of contaminant accumulation on the collecting mirrors.

Sweatt, William C. (Albuquerque, NM); Kubiak, Glenn D. (Livermore, CA)

2001-01-01T23:59:59.000Z

274

Joint probability of precipitation and discharge deficits in the Netherlands  

E-Print Network (OSTI)

Joint probability of precipitation and discharge deficits in the Netherlands Jules J. Beersma and T. Adri Buishand Royal Netherlands Meteorological Institute, De Bilt, The Netherlands Received 14 April] The Netherlands are situated at the downstream end of the Rhine River. A large part of the country can be supplied

Beersma, Jules

275

Characteristics of radio-frequency, atmospheric-pressure glow discharges with air using bare metal electrodes  

SciTech Connect

In this letter, an induced gas discharge approach is proposed and described in detail for obtaining a uniform atmospheric-pressure glow discharge with air in a {gamma} mode using water-cooled, bare metal electrodes driven by radio-frequency (13.56 MHz) power supply. A preliminary study on the discharge characteristics of the air glow discharge is also presented in this study. With this induced gas discharge approach, radio-frequency, atmospheric-pressure glow discharges using bare metal electrodes with other gases which cannot be ignited directly as the plasma working gas, such as nitrogen, oxygen, etc., can also be obtained.

Wang Huabo; Sun Wenting; Li Heping; Bao Chengyu; Zhang Xiaozhang [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)

2006-10-16T23:59:59.000Z

276

A Theory of the Electric Discharge Through Gases  

Science Journals Connector (OSTI)

Three general differential equations are set up which determine the average behavior of a discharge of electricity through a gas. Approximate solutions, giving the electric field E and the concentration of electrons and positive ions, n1 and n2, at any distance x from the cathode, are found for several ranges of value of E.When E is large, the solution corresponds to the conditions in the cathode and anode fall spaces in a glow discharge. Equations are obtained for the potential drop V across the fall space; the current density at the electrode divided by the square of the gas pressure, jp2; and the thickness of the fall space times the pressure, pd.These equations indicate that for the cathode fall space there is a certain minimum value of V, called Vn; and for jp2, called jnp2; and a corresponding maximum value of pd, pdn, beyond which values the discharge ceases. These stationary values are shown to be constants, dependent only on the nature of the gas used and of the cathode material, and correspond to the normal cathode fall space. The equation determining Vn is shown to be of the right from by comparison with the experimentally determined values. From these values of Vn, values of jnp2 and of pdn are calculated for four gases and four cathode materials, and the calculated values check with the experimental data. The corresponding equations for the anode fall space show why there is no corresponding normal anode fall.A consideration of the discharge when E is large throughout the distance between electrodes indicates that there is another stationary value of the cathode fall space when the current density at the cathode reaches its maximum possible value. The V in this case is much smaller than the Vn for the glow discharge, and the form of the equations indicate that they describe the conditions in an electric arc.Another approximate equation is obtained when E is constant, which is the case in the positive column of a glow discharge. This solution indicates that within certain limits of pressure and current density, small sinusoidal variations about the average value Ep, are possible in E. These correspond to the striations sometimes observed in the positive column. The equations determining Ep and those determining the distance between striations check with the known empirical laws relating these amounts to the pressure, the radius of the discharge tube and the critical potentials of the gas used. A general discussion is given of the Faraday dark space and reasons are given why it should be near the cathode rather than the anode.

Philip M. Morse

1928-06-01T23:59:59.000Z

277

Diffraction Gratings for High-Intensity Laser Applications  

SciTech Connect

The scattering of light into wavelength-dependent discrete directions (orders) by a device exhibiting a periodic modulation of a physical attribute on a spatial scale similar to the wavelength of light has been the subject of study for over 200 years. Such a device is called a diffraction grating. Practical applications of diffraction gratings, mainly for spectroscopy, have been around for over 100 years. The importance of diffraction gratings in spectroscopy for the measurement of myriad properties of matter can hardly be overestimated. Since the advent of coherent light sources (lasers) in the 1960's, applications of diffraction gratings in spectroscopy have further exploded. Lasers have opened a vast application space for gratings, and apace, gratings have enabled entirely new classes of laser systems. Excellent reviews of the history, fundamental properties, applications and manufacturing techniques of diffraction gratings up to the time of their publication can be found in the books by Hutley (1) and more recently Loewen and Popov (2). The limited scope of this chapter can hardly do justice to such a comprehensive subject, so the focus here will be narrowly limited to characteristics required for gratings suitable for high-power laser applications, and methods to fabricate them. A particular area of emphasis will be on maximally-efficient large-aperture gratings for short-pulse laser generation.

Britten, J

2008-01-23T23:59:59.000Z

278

HIGH INTENSITY LOW-ENERGY POSITRON SOURCE AT JEFFERSON  

SciTech Connect

We present a novel concept of a low-energy e{sup +} source with projected intensity on the order of 10{sup 10} slow e{sup +}/s. The key components of this concept are a continuous wave e{sup -} beam, a rotating positron-production target, a synchronized raster/anti-raster, a transport channel, and extraction of e{sup +} into a field-free area through a magnetic plug for moderation in a cryogenic solid. Components were designed in the framework of GEANT4-based (G4beamline) Monte Carlo simulation and TOSCA magnetic field calculation codes. Experimental data to demonstrate the effectiveness of the magnetic plug is presented.

Serkan Golge, Bogdan Wojtsekhowski, Branislav Vlahovic

2012-07-01T23:59:59.000Z

279

Operational radiation protection issues specific to high-intensity beams  

Science Journals Connector (OSTI)

......calculation flow-diagram shown in Figure-7...calculation flow-diagram. Based on the estimated...radioactivity, the handling and maintenance...designed and the handling and maintenance...selected as the target material. The beam deposited...calculation flow-diagram shown in Figure-7......

Hiroshi Nakashima

2009-11-01T23:59:59.000Z

280

High intensity proton operation at the Brookhaven AGS accelerator complex  

SciTech Connect

With the completion of the AGS rf upgrade, and the implementation of a transition {open_quotes}jump{close_quotes}, all of accelerator systems were in place in 1994 to allow acceleration of the proton intensity available from the AGS Booster injector to AGS extraction energy and delivery to the high energy users. Beam commissioning results with these new systems are presented. Progress in identifying and overcoming other obstacles to higher intensity are given. These include a careful exploration of the stopband strengths present on the AGS injection magnetic porch, and implementation of the AGS single bunch transverse dampers throughout the acceleration cycle.

Ahrens, L.A.; Blaskiewicz, M.; Bleser, E.; Brennan, J.M.; Gardner, C.; Glenn, J.W.; Onillon, E.; Reece, R.K.; Roser, T.; Soukas, A. [and others

1994-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "high-intensity discharge hid" from the National Library of EnergyBeta (NLEBeta).
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281

Simulation of High-Intensity Mercury Jet Targets  

E-Print Network (OSTI)

kernels, EOS and other physics models · Exact conservation of mass (Lagrangian code) · Natural with proton pulses Entrance of spent mercury jets into the mercury pool #12;Muon Collider: 15 bunches / s 66 of the cavitation zone in water (the interval between frames is 200 s) But what is the internal structure

McDonald, Kirk

282

Highintensity lasers: interactions with atoms, molecules and clusters  

Science Journals Connector (OSTI)

...tra from around 2500-atom xenon clusters irradiated by 2 1016...charge states up to 12+ in xenon and 8+ in krypton at an intensity...process converts the coherent oscillation energy of the electron cloud...result of a resonantly driven oscillation of the entire cluster elec...

1998-01-01T23:59:59.000Z

283

High intensity proton accelerator project in Japan (J-PARC)  

Science Journals Connector (OSTI)

......elements such as Li in lithium battery can be seen with higher contrast...magnetic memories, long-life batteries, medicines and so on. Figure...reprocessing of 1 kg of nuclear fuel for nuclear power plants...system will be assembled by MA fuels and a high energy and high......

Shun-ichi Tanaka

2005-12-20T23:59:59.000Z

284

PHOTOACOUSTIC IMAGING AND HIGH INTENSITY FOCUSED ULTRASOUND IN BIOMEDICAL APPLICATIONS  

E-Print Network (OSTI)

Optical and acoustical technologies for biomedical devices have been developed rapidly in the past years. These non-invasive technologies are used for diagnostic and therapeutic studies with great potential for improving biomedical applications...

Jo, Janggu

2014-08-31T23:59:59.000Z

285

Ultra-High Intensity Magnetic Field Generation in Dense Plasma  

SciTech Connect

I. Grant Objective The main objective of this grant proposal was to explore the efficient generation of intense currents. Whereasthefficient generation of electric current in low-?energy-? density plasma has occupied the attention of the magnetic fusion community for several decades, scant attention has been paid to carrying over to high-?energy-? density plasma the ideas for steady-?state current drive developed for low-?energy-? density plasma, or, for that matter, to inventing new methodologies for generating electric current in high-?energy-?density plasma. What we proposed to do was to identify new mechanisms to accomplish current generation, and to assess the operation, physics, and engineering basis of new forms of current drive in regimes appropriate for new fusion concepts.

Fisch, Nathaniel J

2014-01-08T23:59:59.000Z

286

Microdischarge-assisted ignition of dielectric-barrier high-pressure glow discharges  

E-Print Network (OSTI)

in the ignition of high-pressure arc lamps8 and volume dc discharges.6 Here, we employ a hybrid discharge source of uniform, nonequilibrium glow plasmas for a variety of applications at pressures of 100

Raja, Laxminarayan L.

287

Plasma Polymerization in an Atmospheric Pressure Dielectric Barrier Discharge in a Flowing Gas  

Science Journals Connector (OSTI)

The plasma of atmospheric pressure dielectric barrier discharges (DBD) has ... ozone generation by Siemens 1857. Non-thermal atmospheric pressure discharges are of considerable interest because...1, 2.... The DBD...

Rdiger Foest; Martin Schmidt; Jrgen F. Behnke

2004-01-01T23:59:59.000Z

288

Carbon nanostructures production by AC arc discharge plasma process at atmospheric pressure  

Science Journals Connector (OSTI)

Carbon nanostructures have received much attention for a wide range of applications. In this paper, we produced carbon nanostructures by decomposition of benzene using AC arc discharge plasma process at atmospheric pressure. Discharge was carried out ...

Shenqiang Zhao; Ruoyu Hong; Zhi Luo; Haifeng Lu; Biao Yan

2011-01-01T23:59:59.000Z

289

Boundary Layer Flow Control With a One Atmosphere Uniform Glow Discharge Surface Plasma  

Science Journals Connector (OSTI)

Low speed wind tunnel data have been acquired for planar panels covered by a uniform, glow-discharge surface plasma in atmospheric pressure air known as the One Atmosphere Uniform Glow Discharge Plasma (OAUGDP). Streamwise and spanwise arrays of flush, ...

Roth J. Reece; Sherman Daniel M.; Wilkinson Stephen P.

1998-01-01T23:59:59.000Z

290

Obtaining Carbon Nanoparticles with the Use of Electric?Arc Discharge between Coaxial Electrodes  

Science Journals Connector (OSTI)

The structure of a setup and the results of experiments on obtaining carbon nanostructures with the use of a d.c. arc discharge between coaxial graphite electrodes have been presented. The discharge was stabil...

V. V. Chuprasov; M. S. Tret'yak

291

Sliding electric arc discharge as a means of aircraft trajectory control  

Science Journals Connector (OSTI)

The dynamics of sliding electric arc discharge and the formation of shock waves in the stages of leader motion and the electric arc development in a supersonic air flow behind ... (bar). The air flow in the discharge

V. S. Aksenov; V. V. Golub; S. A. Gubin; V. P. Efremov

2004-10-01T23:59:59.000Z

292

Experimental investigation of the sliding electric frequency mode arc discharge in the subsonic and supersonic flow  

Science Journals Connector (OSTI)

The plasma of the discharge, initiated along a surface of wing or the fuselage, is promising aircraft control facility. Strong shock wave formation at air gap disruption by the sliding discharge (SD) changes a...

V.S. Aksenov; S.A. Gubin; K.V. Efremov; V.V. Golub

2009-01-01T23:59:59.000Z

293

Growth Conditions of Double-Walled Carbon Nanotubes in Arc Discharge  

Science Journals Connector (OSTI)

Growth Conditions of Double-Walled Carbon Nanotubes in Arc Discharge ... Preparation conditions for large-scale synthesis of double-walled carbon nanotubes (DWCNTs) by using electric arc discharge were examined. ...

Yahachi Saito; Takanori Nakahira; Sashiro Uemura

2003-01-04T23:59:59.000Z

294

Numerical investigation on operation mode influenced by external frequency in atmospheric pressure barrier discharge  

SciTech Connect

The influence of external driving frequency on the discharge mode in the dielectric barrier discharge was investigated with a two-dimensional, self-consistent fluid model. The simulation results show that the helium discharge exhibits three operation modes: Townsend, homogeneous glow, and local glow discharges from the lower frequency (1 kHz) to the higher frequency (100 kHz) under discharge parameters specified in this work. The discharge operates in a Townsend mode when the driving frequency varies from 1 to about 7 kHz; while it exhibits homogenous glow characteristics in an approximate range from 7 to 65 kHz; when the external frequency exceeds 65 kHz, it turns into a local glow discharge. The effects of external driving frequency on the discharge mode were revealed and the physical reasons were discussed.

Wang Qi [Dalian Institute of Semiconductor Technology, School of Electronics Science and Technology, Dalian University of Technology, Dalian 116023 (China); Sun Jizhong; Wang Dezhen [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China)

2011-10-15T23:59:59.000Z

295

Patterns of the electric organ discharge during courtship and spawning in the mormyrid fish, Pollimyrus isidori  

Science Journals Connector (OSTI)

Pollimyrus isidori's electric organ discharge (EOD) is of the pulse type. Patterns of EOD intervals were investigated prior to, during and...n=15) showed characteristic discharge interval pattern...

B. O. Bratton; B. Kramer

1989-06-01T23:59:59.000Z

296

Electron Energy Analysis of Vacuum Discharge in High-Voltage Accelerator Tube  

Science Journals Connector (OSTI)

......measurement of the electron energy spectrum during discharge adds some new knowledge to the total voltage...authors sincerely thank Electron Energy Analysis of Vacuum Discharge...Physics, Academic Press, New York, Vol. 6, p. 297. 25......

Akio TAKAOKA; Katsumi URA; Kiyokazu YOSHIDA

1982-01-01T23:59:59.000Z

297

Measurement and Processing of Fast Pulsed Discharge Current in Plasma Focus Machines  

Science Journals Connector (OSTI)

The fast pulsed electric discharge current drives all physical processes in the plasma focus device; in turn all physical processes in the focus affect the current waveform. Thus the discharge ... current wavefor...

S. Lee; S. H. Saw; R. S. Rawat; P. Lee; R. Verma

2012-04-01T23:59:59.000Z

298

Ozone production by nanoporous dielectric barrier glow discharge in atmospheric pressure air  

SciTech Connect

This study is aimed at demonstrating plasma-chemical ozone production based on low temperature atmospheric pressure glow discharge through nanoporous dielectric barriers. The 20 kHz ac driven discharge is formed in air or oxygen gas flowing in the axial direction of the cylindrical plasma reactor containing four parallel aluminum rods covered with nanoporous alumina films. The discharge utilizing nanoporous dielectric barrier is more uniform and more energy efficient in ozone generation than the discharge through smooth-surface dielectric barriers.

Cho, J. H.; Koo, I. G.; Choi, M. Y.; Lee, W. M. [Department of Chemistry and Division of Energy Systems Research, Ajou University, Suwon 443-749 (Korea, Republic of)

2008-03-10T23:59:59.000Z

299

Author's personal copy Ionic and neuromodulatory regulation of burst discharge controls frequency tuning  

E-Print Network (OSTI)

discharge (EOD), in order to sense its environment (Fig. 1A). Changes in the expected pattern of the EOD

Chacron, Maurice

300

E-Print Network 3.0 - air vents discharge Sample Search Results  

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1519 6.2. Compressed air energy storage... and discharge rates for many cycles. Indeed, the high cycling...

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


301

Limiting discharge voltage of a capacitive energy store in a subway car  

Science Journals Connector (OSTI)

A method is proposed for calculating the limiting discharge voltage of a capacitive energy store in a subway car.

G. G. Ryabtsev; I. A. Ermakov

2012-12-01T23:59:59.000Z

302

Transition from Townsend to glow discharge: Subcritical, mixed, or supercritical characteristics Danijela D. Sijacic1  

E-Print Network (OSTI)

Transition from Townsend to glow discharge: Subcritical, mixed, or supercritical characteristics, the transition from Townsend to glow discharge can show the textbook subcritical behavior, but for smaller values long discharges that have a clearly pronounced subcritical characteristics, i.e., for fixed large pd

Ebert, Ute

303

Using sensitivity derivatives for design and parameter estimation in an atmospheric plasma discharge simulation  

Science Journals Connector (OSTI)

The problem of applying sensitivity analysis to a one-dimensional atmospheric radio frequency plasma discharge simulation is considered. A fluid simulation is used to model an atmospheric pressure radio frequency helium discharge with a small nitrogen ... Keywords: Adjoint, Direct differentiation, Optimization, Plasma discharge, Sensitivity analysis, Uncertainty analysis

Kyle J. Lange; W. Kyle Anderson

2010-08-01T23:59:59.000Z

304

A DC corona discharge on a flat plate to induce air Pierre MAGNIER1  

E-Print Network (OSTI)

with applied voltage. Moreover, with voltage higher than a threshold value, the electric discharge changes. For this purpose, different electric discharges have recently been developed, such as the "One Atmosphere Uniform to an arc regime. Figure 1: DC surface corona discharge actuator on a flat plate. 2.2. Optical Setup

Paris-Sud XI, Université de

305

POSITIVE ION CURRENTS IN THE POSITIVE COLUMN OF THE GLOW-DISCHARGE IN THE NOBLE GASES  

Science Journals Connector (OSTI)

...thin glass tubes. The discharge tube, diameter 6 cm...potentials. In the mercury arc the positive ion part...the case in the neon discharge. Similar curves were...and the body of the discharge, looking much like...efficiency for the photo- electric effect than has ever...

W. Uyterhoeven

1929-01-01T23:59:59.000Z

306

The Mormyromast Region of the Mormyrid Electrosensory Lobe. I. Responses to Corollary Discharge and Electrosensory Stimuli  

E-Print Network (OSTI)

of the electric organ discharge (EOD) by two different inputs, EOD-evoked reafferent input from electroreceptors and corollary discharge input associated with the motor command that elicits the EOD. This first paper examines associated with the motor command that drives the electric organ discharge (EOD). The goal is to understand

Roberts, Patrick D.

307

Three-dimensional Composite Lattice Structures Fabricated by Electrical Discharge Machining  

E-Print Network (OSTI)

construction by means of electrical discharge machining (EDM). First, flat- top corrugated carbon fiber. In this paper, we used electrical discharge machining (EDM)--previously used to transform corrugated metallicThree-dimensional Composite Lattice Structures Fabricated by Electrical Discharge Machining J

Vaziri, Ashkan

308

Two-Dimensional Numerical Modeling of Radio-Frequency Ion Engine Discharge  

E-Print Network (OSTI)

Two-Dimensional Numerical Modeling of Radio-Frequency Ion Engine Discharge Michael Meng-Tsuan Tsay-Frequency Ion Engine Discharge Michael Meng-Tsuan Tsay, Manuel Martinez-Sanchez August 2010 SSL # 14 Modeling of Radio-Frequency Ion Engine Discharge by Michael Meng-Tsuan Tsay Submitted to the Department

309

ArcSafe® with Pulsed Arrested Spark Discharge  

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

ArcSafe® ArcSafe® with Pulsed Arrested Spark Discharge  2007 R&D 100 Award Entry Form ArcSafe® with Pulsed Arrested Spark Discharge  Joint Submitters Submitting Organization Sandia National Laboratories PO Box 5800, MS 1181 Albuquerque, NM 87185-1181 USA Larry Schneider Phone: (505) 845-7135 Fax: (505) 845-7685 Email: lxschne@sandia.gov AFFIRMATION: I affirm that all information submitted as a part of, or supplemental to, this entry is a fair and accurate represen- tation of this product. (Signature)______________________________________ Astronics-Advanced Electronic Systems, Inc. 9845 Willows Rd NE City: Redmond State: WA Zip/Postal: 98052-2540 USA Contact Name: Michael Ballas, Program Manager Phone: (425) 895-4304 Fax: (425)702.4930 Email: michael.ballas@astronics.com

310

Zero Discharge Water Management for Horizontal Shale Gas Well Development  

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

Discharge Water Management for Discharge Water Management for Horizontal Shale Gas Well Development Final Report Start Date: October 1, 2009 End Date: March 31, 2012 Authors: Paul Ziemkiewicz, PhD Jennifer Hause Raymond Lovett, PhD David Locke Harry Johnson Doug Patchen, PG Report Date Issued: June 2012 DOE Award #: DE-FE0001466 Submitting Organization: West Virginia Water Research Institute West Virginia University PO Box 6064 Morgantown, WV 26506-6064 FilterSure, Inc. PO Box 1277 McLean, VA 22101 ShipShaper, LLP PO Box 2 Morgantown, WV 26507 2 | P a g e Acknowledgment "This material is based upon work supported by the Department of Energy under Award Number DE-FE0001466." Disclaimer "This report was prepared as an account of work sponsored by an agency of the United States

311

Glow discharge deposition at high rates using disilane  

SciTech Connect

The research program reported makes use of the fact that amorphous silicon films can be grown faster from disilane in a glow discharge than from the traditional silane. The goal is to find a method to grow films at a high rate and with sufficiently high quality to be used in an efficient solar cell. It must also be demonstrated that the appropriate device structure can be successfully fabricated under conditions which give high deposition rates. High quality intrinsic films have been deposited at 20 A/s. Efficiency of 5.6% on steel substrates and 5.3% on glass substrates were achieved using disilane i-layers deposited at 15 A/s in a basic structure, without wide-gap doped layers or light trapping. Wide gap p-layers were deposited using disilane. Results were compared with those obtained at Vactronic using high power discharges of silane-hydrogen mixtures. (LEW)

Rajeswaran, G.; Corderman, R.R.; Kampas, F.J.; Vanier, P.E.

1985-01-01T23:59:59.000Z

312

Electrical Characterization of an RF Glow Discharge at Room Pressure  

SciTech Connect

A non-thermal atmospheric-like plasma source able to operate at room temperature represents, by its physical nature, a considerable potential for biological applications, given its highly accurate action and extremely controllable penetration on the surface of biological tissue. As we start up a research line into this technology, we report the electrical characterization of a room pressure plasma discharge by means of a coupling network model. The discharge is produced by a 13.56MHz commercial generator. As it is impossible to measure directly its state variables (voltage and current intensity) due to the considerable perturbation created by introducing a low impedance at the system output, then an indirect estimation of such variables is achieved from experimental diagnostics at the input, so to validate the proposed electrical model.

Perez-Martinez, J. A.; Piedad-Beneitez, A. de la [Instituto Tecnologico de Toluca, AP 890, Toluca (Mexico); Pena-Eguiluz, R.; Mercado-Cabrera, A.; Valencia A, R.; Barocio, S. R. [Instituto Nacional de Investigaciones Nucleares, AP 18-1027, 11801, Mexico D.F. (Mexico); Lopez-Callejas, R.; Godoy-Cabrera, O. G.; Benitez-Read, J. S.; Pacheco-Sotelo, J. O. [Instituto Tecnologico de Toluca, AP 890, Toluca (Mexico); Instituto Nacional de Investigaciones Nucleares, AP 18-1027, 11801, Mexico D.F. (Mexico)

2006-12-04T23:59:59.000Z

313

Redox reactions with empirical potentials: Atomistic battery discharge simulations  

E-Print Network (OSTI)

Batteries are pivotal components in overcoming some of today's greatest technological challenges. Yet to date there is no self-consistent atomistic description of a complete battery. We take first steps toward modeling of a battery as a whole microscopically. Our focus lies on phenomena occurring at the electrode-electrolyte interface which are not easily studied with other methods. We use the redox split-charge equilibration (redoxSQE) method that assigns a discrete ionization state to each atom. Along with exchanging partial charges across bonds, atoms can swap integer charges. With redoxSQE we study the discharge behavior of a nano-battery, and demonstrate that this reproduces the generic properties of a macroscopic battery qualitatively. Examples are the dependence of the battery's capacity on temperature and discharge rate, as well as performance degradation upon recharge.

Dapp, Wolf B

2013-01-01T23:59:59.000Z

314

Characteristics Of A Dielectric Barrier Discharge In Atmospheric Air  

SciTech Connect

Parallel plate dielectric barrier discharges consisting of two electrodes with glass (epsilon{sub r} = 7.5) and alumina (epsilon{sub r} = 9.0) as the dielectric barrier were constructed. The system is powered by a variable 20 kV high voltage supply which is capable of delivering unipolar voltage pulses at frequency of 0.1-2.5 kHz and sinusoidal voltages at 6.5 kHz and above. At atmospheric pressure, the discharges exhibit either diffuse or filamentary appearance depending on parameters which include the series capacitance established by the electrodes with the dielectric barrier and varying air gap, dielectric material, and frequency of the supply voltages. This DBD system is built for the study of bacterial sterilization.

Lai, C. K.; Chin, O. H. [Plasma Research Laboratory, Physics Department, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia); Thong, K. L. [Microbiology Division, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia)

2009-07-07T23:59:59.000Z

315

Intrinsic Noise Induced Coherence Resonance in a Glow discharge Plasma  

E-Print Network (OSTI)

Experimental evidence of intrinsic noise induced coherence resonance in a glow discharge plasma is being reported. Initially the system is started at a discharge voltage (DV) where it exhibited fixed point dynamics, and then with the subsequent increase in the DV spikes were excited which were few in number and with further increase of DV the number of spikes as well as their regularity increased. The regularity in the interspike interval of the spikes is estimated using normalized variance (NV). Coherence resonance was determined using normalized variance curve and also corroborated by Hurst exponent and power spectrum plots. We show that the regularity of the excitable spikes in the floating potential fluctuation increases with the increase in the DV, upto a particular value of DV. Using a Wiener filter, we separated the noise component which was observed to increase with DV and hence conjectured that noise can be playing an important role in the generation of the coherence resonance. From an anharmonic osc...

Shaw, Pankaj Kumar; Ghosh, S; Janaki, M S; Iyengar, A N S

2014-01-01T23:59:59.000Z

316

Focused shock spark discharge drill using multiple electrodes  

DOE Patents (OSTI)

A spark discharge focused drill provided with one pulse forming line or a number of pulse forming lines. The pulse forming line is connected to an array of electrodes which would form a spark array. One of the electrodes of each of the array is connected to the high voltage side of the pulse forming line and the other electrodes are at ground potential. When discharged in a liquid, these electrodes produce intense focused shock waves that can pulverize or fracture rock. By delaying the firing of each group of electrodes, the drill can be steered within the earth. Power can be fed to the pulse forming line either downhole or from the surface area. A high voltage source, such as a Marx generator, is suitable for pulse charging the lines.

Moeny, William M. (Albuquerque, NM); Small, James G. (Albuquerque, NM)

1988-01-01T23:59:59.000Z

317

Equilibrium analysis of tokamak discharges with toroidal variation  

SciTech Connect

Tokamaks provide a field structure that is almost axisymmetric around the torus axis. There are however always small toroidal variations due to the limited number of toroidal field coils, the magnetic field ripple. On the other hand, non-axisymmetric external fields are applied on purpose to ergodise the field structure close to the separatrix, to control the heat and particle transport across the plasma boundary. We present a perturbation method to calculate the magnetic field of tokamak discharges with with weak toroidal variation. The method is applied for the equilibrium reconstruction of Tore Supra discharges with toroidal ripple. The perturbation method does not rely on a flux surface representation and can therefore be applied to structures with magnetic islands. We obtain the plasma response to the field of ergodising external coils, as proposed for the ITER device.

Zwingmann, W.; Becoulet, M.; Moreau, Ph.; Nardon, E. [Ass Euratom-CEA/DSM/DRFC Cadarache, 13108 St.-Paul-Lez-Durance (France)

2006-11-30T23:59:59.000Z

318

Method and apparatus for processing exhaust gas with corona discharge  

DOE Patents (OSTI)

The present invention is placing a catalyst coating upon surfaces surrounding a volume containing corona discharge. In addition, the electrodes are coated with a robust dielectric material. Further, the electrodes are arranged so that at least a surface portion of each electrode extends into a flow path of the exhaust gas to be treated and there is only exhaust gas in the volume between each pair of electrodes. 12 figs.

Barlow, S.E.; Orlando, T.M.; Tonkyn, R.G.

1999-06-22T23:59:59.000Z

319

Negative ion source with hollow cathode discharge plasma  

DOE Patents (OSTI)

A negative ion source of the type where negative ions are formed by bombarding a low-work-function surface with positive ions and neutral particles from a plasma, wherein a highly ionized plasma is injected into an anode space containing the low-work-function surface. The plasma is formed by hollow cathode discharge and injected into the anode space along the magnetic field lines. Preferably, the negative ion source is of the magnetron type.

Hershcovitch, Ady (Mt. Sinai, NY); Prelec, Krsto (Setauket, NY)

1983-01-01T23:59:59.000Z

320

Sn Plasma Focus Discharge for EUV Radiation Source  

Science Journals Connector (OSTI)

A small plasma focus device was constructed for the EUV radiation experiment. The storage energy of capacitor bank is 3.4 kj and the maximum discharge current is 140 kA. Although the device was not well optimized for strong pinch EUV radiation was observed from the focus plasma. The plasma dynamics was affected by electrode material and the use of Sn electrode was proved to be effective for producing Sn plasma.

Keiichi Takasugi; Takeshi Umeda; Ena Kiuchi; Takuya Hayashi

2006-01-01T23:59:59.000Z

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


321

Negative ion source with hollow cathode discharge plasma  

DOE Patents (OSTI)

A negative ion source of the type where negative ions are formed by bombarding a low-work-function surface with positive ions and neutral particles from a plasma, wherein a highly ionized plasma is injected into an anode space containing the low-work-function surface is described. The plasma is formed by hollow cathode discharge and injected into the anode space along the magnetic field lines. Preferably, the negative ion source is of the magnetron type.

Hershcovitch, A.; Prelec, K.

1980-12-12T23:59:59.000Z

322

A diffusion-controlled regime of cylindrical inductive discharges  

Science Journals Connector (OSTI)

A fluid-plasma model of diffusion-controlled cylindrical inductive discharges in an argon gas is presented. The plasma-field structure of the discharge obtained is completed by the interrelated behaviour of concentrations of charged particles, electron temperature, power absorbed on average by an electron, radial distribution of the components of the high-frequency field, of the Joule heating and of the high-frequency current density in the plasma. The self-consistency of the model and its validity over a wide pressure range (p = (0.055)?Torr) is reached by involving detailed treatment of the electron energy balance, of the nonlinear processes in the charged particle balance and of the momentum equations. By accounting for the velocity dependence of the elastic electronneutral collision frequency, concepts from the kinetic plasma theory are introduced in a fluid-plasma description of the discharge. The analysis of the results is in terms of changing gas pressure, power and frequency of the maintenance field. The changes of the parameters of the external coil due to the plasma loading in the coil are also discussed.

St Kolev; H Schlter; A Shivarova; Kh Tarnev

2006-01-01T23:59:59.000Z

323

Ignition and extinction phenomena in helium micro hollow cathode discharges  

SciTech Connect

Micro hollow cathode discharges (MHCD) were produced using 250??m thick dielectric layer of alumina sandwiched between two nickel electrodes of 8??m thickness. A through cavity at the center of the chip was formed by laser drilling technique. MHCD with a diameter of few hundreds of micrometers allowed us to generate direct current discharges in helium at up to atmospheric pressure. A slowly varying ramped voltage generator was used to study the ignition and the extinction periods of the microdischarges. The analysis was performed by using electrical characterisation of the V-I behaviour and the measurement of He*({sup 3}S{sub 1}) metastable atoms density by tunable diode laser spectroscopy. At the ignition of the microdischarges, 2??s long current peak as high as 24?mA was observed, sometimes followed by low amplitude damped oscillations. At helium pressure above 400?Torr, an oscillatory behaviour of the discharge current was observed just before the extinction of the microdischarges. The same type of instability in the extinction period at high pressure also appeared on the density of He*({sup 3}S{sub 1}) metastable atoms, but delayed by a few ?s relative to the current oscillations. Metastable atoms thus cannot be at the origin of the generation of the observed instabilities.

Kulsreshath, M. K.; Schwaederle, L.; Dufour, T.; Lefaucheux, P.; Dussart, R. [GREMI, CNRS/Universit d'Orlans (UMR7344), Orlans (France); Sadeghi, N. [LIPhy, CNRS and Universite Joseph Fourier (UMR5588), Grenoble (France); Overzet, L. J. [GREMI, CNRS/Universit d'Orlans (UMR7344), Orlans (France); PSAL, UTDallas, Richardson, Texas 75080-3021 (United States)

2013-12-28T23:59:59.000Z

324

GRR/Section 14-UT-b - Utah Pollutant Discharge Elimination System | Open  

Open Energy Info (EERE)

GRR/Section 14-UT-b - Utah Pollutant Discharge Elimination System GRR/Section 14-UT-b - Utah Pollutant Discharge Elimination System < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 14-UT-b - Utah Pollutant Discharge Elimination System 14UTBUtahPollutantDischargeEliminationSystemPermit.pdf Click to View Fullscreen Contact Agencies Utah Division of Water Quality Utah Department of Environmental Quality United States Environmental Protection Agency Regulations & Policies R317-2-3 Antidegradation Policy R317-8 Utah Pollutant Discharge Elimination System (UPDES) Triggers None specified Click "Edit With Form" above to add content 14UTBUtahPollutantDischargeEliminationSystemPermit.pdf 14UTBUtahPollutantDischargeEliminationSystemPermit.pdf Error creating thumbnail: Page number not in range.

325

ORNL DAAC GLOBAL RIVER DISCHARGE, 1807-1991, V. 1.1 (RIVDIS)  

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

Data > Regional/Global > River Discharge (RIVDIS) > Guide Data > Regional/Global > River Discharge (RIVDIS) > Guide Document GLOBAL RIVER DISCHARGE, 1807-1991, V. 1.1 (RIVDIS) Get Data Global River Discharge, 1807-1991, V. 1.1 (RivDIS) Summary: The Global Monthly River Discharge Data Set contains monthly averaged discharge measurements for 1018 stations located throughout the world. The period of record varies widely from station to station with a mean of 21.5 years. The data are derived from the published UNESCO archives for river discharge and checked against information obtained from the Global Runoff Center in Koblenz, Germany, through the U.S. National Geophysical Data Center in Boulder, Colorado. Citation: Cite this data set as follows (citation revised on September 20, 2002): Vorosmarty, C. J., B. M. Fekete, and B. A. Tucker. 1998. Global River

326

Stabilization of liquid hydrocarbon fuel combustion by using a programmable microwave discharge in a subsonic airflow  

SciTech Connect

Under conditions of a programmable discharge (a surface microwave discharge combined with a dc discharge), plasma-enhanced combustion of alcohol injected into a subsonic (M = 0.3-0.9) airflow in the drop (spray) phase is stabilized. It is shown that the appearance of the discharge, its current-voltage characteristic, the emission spectrum, the total emission intensity, the heat flux, the electron density, the hydroxyl emission intensity, and the time dependences of the discharge current and especially discharge voltage change substantially during the transition from the airflow discharge to stabilized combustion of the liquid hydrocarbon fuel. After combustion stabilization, more than 80% of liquid alcohol can burn out, depending on the input power, and the flame temperature reaches {approx}2000 K.

Kopyl, P. V.; Surkont, O. S.; Shibkov, V. M.; Shibkova, L. V. [Moscow State University, Faculty of Physics (Russian Federation)

2012-06-15T23:59:59.000Z

327

COMMENTS ON THE SEARCH FOR ELECTROSTATIC DISCHARGES ON MARS  

SciTech Connect

Ruf et al. used the Deep Space Network (DSN) to search for the emission of non-thermal radiation by martian dust storms, theoretically predicted by Renno et al. They detected the emission of non-thermal radiation that they were searching for, but were surprised that it contained spectral peaks suggesting modulation at various frequencies and their harmonics. Ruf et al. hypothesized that the emission of non-thermal radiation was caused by electric discharges in a deep convective dust storm, modulated by Schumann resonances (SRs). Anderson et al. used the Allen Telescope Array (ATA) to search for similar emissions. They stated that they found only radio frequency interference (RFI) during their search for non-thermal emission by martian dust storms and implicitly suggested that the signal detected by Ruf et al. was also RFI. However, their search was not conducted during the dust storm season when deep convective storms are most likely to occur. Here, we show that the ubiquitous dust devils and small-scale dust storms that were instead likely present during their observations are too shallow to excite SRs and produce the signals detected by Ruf et al. We also show that the spectral and temporal behavior of the signals detected by Anderson et al. corroborates the idea that they originated from man-made pulse-modulated telecommunication signals rather than martian electric discharges. In contrast, an identical presentation of the signals detected by Ruf et al. demonstrates that they do not resemble man-made signals. The presentation indicates that the DSN signals were consistent with modulation by martian SRs, as originally hypothesized by Ruf et al. We propose that a more comprehensive search for electrostatic discharges be conducted with either the ATA or DSN during a future martian dust storm season to test the hypothesis proposed by Ruf et al.

Renno, Nilton O.; Ruf, Christopher S., E-mail: renno@alum.mit.edu [Atmospheric, Oceanic and Space Sciences, University of Michigan, Ann Arbor, MI (United States)

2012-12-20T23:59:59.000Z

328

Ethanol reforming in non-equilibrium plasma of glow discharge  

E-Print Network (OSTI)

The results of a detailed kinetic study of the main plasma chemical processes in non-equilibrium ethanol/argon plasma are presented. It is shown that at the beginning of the discharge the molecular hydrogen is mainly generated in the reaction of ethanol H-abstraction. Later hydrogen is formed from active H, CH2OH and CH3CHOH and formaldehyde. Comparison with experimental data has shown that the used kinetic mechanism predicts well the concentrations of main species at the reactor outlet.

Levko, D

2012-01-01T23:59:59.000Z

329

High-Density Discharges in the Alcator Tokamak  

Science Journals Connector (OSTI)

Peak plasma densities in excess of 1015 cm-3 have been obtained in the Alcator tokamak with 60<~BT<85 kG. The highest average density so far achieved is ne=61014 cm-3; the corresponding n0?E=21013 cm-3 s. These ultrahigh-density discharges exhibit (i) nearly complete energy equilibration between electrons and ions, (ii) severe attenuation of energetic-neutral-particle fluxes, (iii) a minor role of impurities, and (iv) energy-confinement properties consistent with neoclassical estimates.

M. Gaudreau; A. Gondhalekar; M. H. Hughes; D. Overskei; D. S. Pappas; R. R. Parker; S. M. Wolfe; E. Apgar; H. I. Helava; I. H. Hutchinson; E. S. Marmar; K. Molvig

1977-11-14T23:59:59.000Z

330

Flow shaping using three-dimensional microscale gas discharge  

SciTech Connect

We introduce a flow shaping mechanism using surface compliant microscale gas discharge. A three-dimensional finite element-based multiscale ionized gas flow code is utilized to analyze charge separation, potential distribution, and flow inducement mechanism. For the case of quiescent flow, a horseshoe-shaped plasma generator is introduced. Due to its unusual shape, the three-dimensional electric force excites a pinching effect on the fluid inside selectively powered electrode arc. Such effect is capable of tripping the flow-ejecting fluid normal to the plane of the actuator and thus can be very useful for many applications.

Wang, C.-C.; Roy, Subrata [Department of Mechanical and Aerospace Engineering, Computational Plasma Dynamics Laboratory and Test Facility, University of Florida, Gainesville, Florida 32611-6300 (United States)

2009-08-24T23:59:59.000Z

331

Plasma sterilization using glow discharge at atmospheric pressure  

Science Journals Connector (OSTI)

Recent development of atmospheric pressure glow discharge was compared with the performance of an apparatus used in the first APG experiment, in terms of sterilization of newly classified biological indicator: Bacillus atrophaeus, former Bacillus subtilis var. niger and Geobacillus stearothermophilus. Stabilization was attained by controlling the experimental conditions, at low frequency: 100 kHz and Radio Frequency: 13.56 MHz, water vapor/He dilution. Large volume of meta-stable atomic helium is responsible for the result that aids generation of hydroxyl radicals.

Tetsuya Akitsu; Hiroshi Ohkawa; Masao Tsuji; Hideo Kimura; Masuhiro Kogoma

2005-01-01T23:59:59.000Z

332

Surface charge in dielectric barrier discharge plasma actuators  

SciTech Connect

Direct measurements of the dielectric surface potential and its dynamics in asymmetric dielectric barrier discharge (DBD) plasma actuators show that the charge builds up at the dielectric surface and extends far downstream of the plasma. The surface charge persists for a long time (tens of minutes) after the driving voltage has been turned off. For a sinusoidal voltage waveform, the dielectric surface charges positively. With the voltage waveform consisting of nanosecond pulses superimposed on a dc bias, the sign of the dielectric surface charge is the same as the sign (polarity) of the bias voltage. The surface charging significantly affects DBD plasma actuator performance.

Opaits, D. F.; Shneider, M. N.; Miles, Richard B. [Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544 (United States); Likhanskii, A. V. [Pennsylvania State University, University Park, Pennsylvania 16802 (United States); Macheret, S. O. [Lockheed Martin Aeronautics Company, Palmdale, California 93599 (United States)

2008-07-15T23:59:59.000Z

333

Synthesizing aluminum particles towards controlling electrostatic discharge ignition sensitivity  

SciTech Connect

Aluminum particles were synthesized with shell thicknesses ranging from 2.7 to 8.3 nm and a constant diameter of 95 nm. These fuel particles were combined with molybdenum trioxide particles and the electrostatic discharge (ESD) sensitivity of the mixture was measured. Results show ignition delay increased as the alumina shell thickness increased. These results correlated with electrical resistivity measurements of the mixture which increased with alumina concentration. A model was developed using COMSOL for ignition of a single Al particle. The ignition delay in the model was consistent with the experimental results suggesting that the primary ESD ignition mechanism is joule heating.

Eric S. Collins; Jeffery P. Gesner; Michelle L. Pantoya; Michael A. Daniels

2014-02-01T23:59:59.000Z

334

DINA simulations of TCV electron cyclotron heating discharges  

Science Journals Connector (OSTI)

This paper reports on full tokamak discharge simulations in the TCV tokamak using the DINA code, of which a new open modular architecture version is presented. These new simulations include the effect of intense electron cyclotron heating, dissipated off-axis. The change in the plasma conductivity produces a time-varying plasma current profile, which in turn causes the plasma shape to relax in the almost constant vacuum quadrupole field. These simulations allow us to check on the diffusion of poloidal magnetic flux, as well as the modelling of the electron cyclotron heating.

V.E. Lukash; D. Raju; V.N. Dokouka; J.-Y. Favez; R.R. Khayrutdinov; J.B. Lister

2003-01-01T23:59:59.000Z

335

GRR/Elements/14-CA-b.6 - Does RWQCB decide to allow discharge | Open Energy  

Open Energy Info (EERE)

RWQCB decide to allow discharge RWQCB decide to allow discharge < GRR‎ | Elements Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections 14-CA-b.6 - Does RWQCB decide to allow discharge Once the RWQCB and EPA deem the application complete, the RWQCB makes an initial determination whether the application is appropriate for consideration or if it should be denied outright. If the discharge is denied outright, the process ends. If RWQCB decides to consider the application, the public process is triggered. Logic Chain No Parents \V/ GRR/Elements/14-CA-b.6 - Does RWQCB decide to allow discharge (this page) \V/ No Dependents Under Development Add.png Add an Element Retrieved from "http://en.openei.org/w/index.php?title=GRR/Elements/14-CA-b.6_-_Does_RWQCB_decide_to_allow_discharge&oldid=482583

336

GRR/Section 14-NV-e - Groundwater Discharge Permit | Open Energy  

Open Energy Info (EERE)

GRR/Section 14-NV-e - Groundwater Discharge Permit GRR/Section 14-NV-e - Groundwater Discharge Permit < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 14-NV-e - Groundwater Discharge Permit 14NVEGroundwaterDischargePermit.pdf Click to View Fullscreen Contact Agencies Nevada Division of Environmental Protection Regulations & Policies NAC 445A NRS 445A Triggers None specified Click "Edit With Form" above to add content 14NVEGroundwaterDischargePermit.pdf 14NVEGroundwaterDischargePermit.pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Flowchart Narrative The Nevada Division of Environmental Protection (NDEP) Bureau of Water Pollution Control is responsible for protecting Nevada water quality from

337

A large gap of radio frequency dielectric barrier atmospheric pressure glow discharge  

SciTech Connect

A large gap was acquired between electrodes (up to 5.5 mm) of Ar atmospheric pressure glow discharge in radio frequency dielectric barrier discharge (rf-DBD). The discharge of Ar plasma was characterized by I-V curve and Lissajous plot, and the effective power of the discharge was calculated based on the measured Lissajous plot and found to be higher than 90% of the input power. To gain a thorough understanding of the mechanism, the rf-DBD with a single dielectric barrier layer operating in gamma mode glow discharge of N{sub 2} plasma was diagnosed in spatial resolution through optical emission spectroscopy. It was concluded that secondary electron emission might be responsible for the sustainable glow discharge in the large gap rf-DBD plasma.

Li, B.; Chen, Q.; Liu, Z. W. [Laboratory of Plasma Physics and Materials, Beijing Institute of Graphic Communication, Beijing 102600 (China)

2010-01-25T23:59:59.000Z

338

Production of atmospheric-pressure glow discharge in nitrogen using needle-array electrode  

SciTech Connect

An atmospheric pressure glow discharge was generated using a needle-array electrode in nitrogen, and the voltage-current characteristics of the glow discharge were obtained in a range from 1 mA to 60 A. A pulsed high voltage with short rise time under 10 ns was employed to generate streamer discharges simultaneously at all needle tips. The large number of streamer discharges prevented the glow-to-arc transition caused by inhomogeneous thermalization. Semiconductor opening switch diodes were employed as an opening switch to shorten the rise time. The glow voltage was almost constant until the discharge current became 0.3 A, whereas the voltage increased with the current higher than 0.3 A. Electron density and temperature in a positive column of the glow discharge at 60 A were obtained to 1.4x10{sup 12} cm{sup -3} and 1.3 eV from calculation based on nitrogen swarm data.

Takaki, K.; Hosokawa, M.; Sasaki, T.; Mukaigawa, S.; Fujiwara, T. [Department of Electrical and Electronic Engineering, Iwate University, 4-3-5 Ueda, Morioka, Iwate 020-8551 (Japan)

2005-04-11T23:59:59.000Z

339

Zero liquid discharge industrial wastewater treatment: Case studies from 1976-1996  

SciTech Connect

As wastewater discharge regulations become more stringent, power plants, manufacturing plants and other industrial sites are looking for ways to reduce makeup water requirements and to recycle and reuse as much wastewater as possible. In some cases, environmental regulations require zero liquid discharge, meaning all wastewater must either be retained on site or reduced to solids for disposal off site. Zero liquid discharge or {open_quotes}closed-loop{close_quotes} wastewater treatment systems using evaporators and other process equipment have been well-accepted in recent years. Often overlooked is the fact that zero discharge is not just the latest fashion--many commercial zero liquid discharge systems have been in operation since the mid-70`s. This paper will give specific examples of zero liquid discharge operations from 1974 to the present, showing how evaporation equipment and processes have changed to meet the requirements of industry and environmental regulations. 5 refs., 5 figs., 3 tabs.

Bostjancic, J.; Ludlum, R. [Ionics RCC, Bellevue, WA (United States)

1996-12-31T23:59:59.000Z

340

Modeling a short dc discharge with thermionic cathode and auxiliary anode  

SciTech Connect

A short dc discharge with a thermionic cathode can be used as a current and voltage stabilizer, but is subject to current oscillation. If instead of one anode two anodes are used, the current oscillations can be reduced. We have developed a kinetic model of such a discharge with two anodes, where the primary anode has a small opening for passing a fraction of the discharge current to an auxiliary anode. The model demonstrates that the current-voltage relationship of the discharge with two anodes is characterized everywhere by positive slope, i.e., positive differential resistance. Therefore, the discharge with two anodes is expected to be stable to the spontaneous oscillation in current that is induced by negative differential resistance. As a result, such a discharge can be used in an engineering application that requires stable plasma, such as a current and voltage stabilizer.

Bogdanov, E. [St. Petersburg State University, St. Petersburg 199034 (Russian Federation) [St. Petersburg State University, St. Petersburg 199034 (Russian Federation); University ITMO, Kronverkskiy pr. 49, St. Petersburg 197101 (Russian Federation); Demidov, V. I. [St. Petersburg State University, St. Petersburg 199034 (Russian Federation) [St. Petersburg State University, St. Petersburg 199034 (Russian Federation); West Virginia University, Morgantown, West Virginia 26506 (United States); Kaganovich, I. D. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States)] [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543 (United States); Koepke, M. E. [West Virginia University, Morgantown, West Virginia 26506 (United States)] [West Virginia University, Morgantown, West Virginia 26506 (United States); Kudryavtsev, A. A. [St. Petersburg State University, St. Petersburg 199034 (Russian Federation)] [St. Petersburg State University, St. Petersburg 199034 (Russian Federation)

2013-10-15T23:59:59.000Z

Note: This page contains sample records for the topic "high-intensity discharge hid" from the National Library of EnergyBeta (NLEBeta).
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they are not comprehensive nor are they the most current set.
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341

GRR/Section 14-CO-e - Ground Water Discharge Permit | Open Energy  

Open Energy Info (EERE)

CO-e - Ground Water Discharge Permit CO-e - Ground Water Discharge Permit < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 14-CO-e - Ground Water Discharge Permit 14COEGroundWaterDischargePermit.pdf Click to View Fullscreen Contact Agencies Colorado Department of Public Health and Environment Regulations & Policies Colorado Water Quality Control Act 5 CCR 1002-61 Colorado Discharge Permit System 5 CCR 1002-41 Basic Standards for Ground Water 5 CCR 1002-42 Site Specific Water Quality Standards for Ground Water Triggers None specified Click "Edit With Form" above to add content 14COEGroundWaterDischargePermit.pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range.

342

GRR/Section 14-CA-e - Waste Discharge Requirements | Open Energy  

Open Energy Info (EERE)

GRR/Section 14-CA-e - Waste Discharge Requirements GRR/Section 14-CA-e - Waste Discharge Requirements < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 14-CA-e - Waste Discharge Requirements 14CAEWasteDischargeRequirements.pdf Click to View Fullscreen Contact Agencies California Environmental Protection Agency Water Resources Control Board Regulations & Policies Title 27 CCR, Division 2 - Environmental Protection - Solid Waste SWRCB Exemptions Triggers None specified Click "Edit With Form" above to add content 14CAEWasteDischargeRequirements.pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Flowchart Narrative The State Water Resources Control Board (SWRCB) may require Waste discharge

343

GRR/Section 14-TX-e - Ground Water Discharge Permit | Open Energy  

Open Energy Info (EERE)

GRR/Section 14-TX-e - Ground Water Discharge Permit GRR/Section 14-TX-e - Ground Water Discharge Permit < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 14-TX-e - Ground Water Discharge Permit 14TXEGroundWaterDischargePermit (1).pdf Click to View Fullscreen Contact Agencies Railroad Commission of Texas United States Environmental Protection Agency Regulations & Policies 16 TAC 3.8 (Rule 8) Triggers None specified Click "Edit With Form" above to add content 14TXEGroundWaterDischargePermit (1).pdf 14TXEGroundWaterDischargePermit (1).pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Flowchart Narrative Pits are used in drilling operations to contain drilling related fluids and

344

GRR/Section 14-CO-b - Colorado Discharge Permit System (CDPS) | Open Energy  

Open Energy Info (EERE)

CO-b - Colorado Discharge Permit System (CDPS) CO-b - Colorado Discharge Permit System (CDPS) < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 14-CO-b - Colorado Discharge Permit System (CDPS) 14COBColoradoDischargePermitSystemCDPS.pdf Click to View Fullscreen Contact Agencies Colorado Department of Public Health and Environment Regulations & Policies Colorado Water Quality Control Act 5 CCR 1002-61 5 CCR 1002-62 Triggers None specified Click "Edit With Form" above to add content 14COBColoradoDischargePermitSystemCDPS.pdf 14COBColoradoDischargePermitSystemCDPS.pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Flowchart Narrative The Colorado Department of Public Health and Environment (CDPHE) Water

345

Enhancement of electric oxygen-iodine laser performance using a rectangular discharge and longer gain length  

E-Print Network (OSTI)

is produced by a single radio-frequency-excited electric discharge sustained in an O2­He­NO gas mixture a is produced by a single transverse capacitive 13.56 MHz rf excited electric discharge sustained in an O2­He discharge channel section has an internal flow cross section of 1.6 cm by 7.5 cm. The plasma zone filled

Carroll, David L.

346

Diameters of Single-Wall Carbon Nanotubes Depending on Helium Gas Pressure in an Arc Discharge  

Science Journals Connector (OSTI)

Diameters of Single-Wall Carbon Nanotubes Depending on Helium Gas Pressure in an Arc Discharge ... So far, relatively large quantities of SWNTs have been produced by using Y?Ni and Fe?Ni catalysts for the electric arc discharge method28-30 and by using a Co?Ni catalyst for the pulsed laser ablation method. ... The electric current of the arc discharge also affected the yield of SWNTs though its effect was not as serious as the helium pressure. ...

Yahachi Saito; Yoshihiko Tani; Atsuo Kasuya

2000-02-26T23:59:59.000Z

347

Medication Adherence and Health Care Utilization among Schizophrenia Inpatients after Discharged: A Cohort Study in Taiwan.  

E-Print Network (OSTI)

??Purpose: This study investigate the relationship and factors between medication adherence and health care utilization among Schizophrenia inpatients after discharged, for reducing relapse rate, helping (more)

Lin, Pei-Yu

2015-01-01T23:59:59.000Z

348

PolymerGraphene Nanocomposites as Ultrafast-Charge and -Discharge Cathodes for Rechargeable Lithium Batteries  

Science Journals Connector (OSTI)

PolymerGraphene Nanocomposites as Ultrafast-Charge and -Discharge Cathodes for Rechargeable Lithium Batteries ... Lithium battery; cathode; polymer; graphene; nanocomposite ...

Zhiping Song; Terrence Xu; Mikhail L. Gordin; Ying-Bing Jiang; In-Tae Bae; Qiangfeng Xiao; Hui Zhan; Jun Liu; Donghai Wang

2012-03-26T23:59:59.000Z

349

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

SciTech Connect

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.

Demidov, V. I. [Department of Optics and Spectroscopy, St. Petersburg State University, St. Petersburg 199034 (Russian Federation); International Laboratory Nonlocal Plasma in Nanotechnology and Medicine, ITMO University, Kronverkskiy pr. 49, St. Petersburg 197101 (Russian Federation); Department of Physics and Astronomy, West Virginia University, Morgantown, West Virginia 26506 (United States); Kudryavtsev, A. A.; Stepanova, O. M. [Department of Optics and Spectroscopy, St. Petersburg State University, St. Petersburg 199034 (Russian Federation); Kurlyandskaya, I. P. [International Laboratory Nonlocal Plasma in Nanotechnology and Medicine, ITMO University, Kronverkskiy pr. 49, St. Petersburg 197101 (Russian Federation); St. Petersburg University of State Fire Service of EMERCOM RF, Murmansk Branch, Murmansk 183040 (Russian Federation)

2014-09-15T23:59:59.000Z

350

3D analysis of magnetization distribution magnetized by capacitor-discharge impulse magnetizer  

Science Journals Connector (OSTI)

Method for calculating the magnetization distribution magnetized by capacitor-discharge impulse magnetizer is expanded to 3D, and the calculated flux distribution is compared with measured one.

Norio Takahashi

2001-01-01T23:59:59.000Z

351

Cell treatment and surface functionalization using the atmospheric pressure glow discharge plasma torch (APGD-t).  

E-Print Network (OSTI)

??The atmospheric pressure glow discharge plasma torch (APGD-t ) was used to treat cell cultures to investigate potential reactions with biological tissue. The plasma jet (more)

Yonson, Sara.

2006-01-01T23:59:59.000Z

352

Simulation of Atmospheric Pressure Non-Thermal Plasma Discharges for Surface Decontamination Applications  

Science Journals Connector (OSTI)

Numerical simulations are conducted to characterize atmospheric pressure plasma discharges for surface decontamination applications. A self ... dimensional hybrid model is developed to simulate the atmospheric pr...

T. Farouk; B. Farouk; A. Gutsol; A. Fridman

2008-01-01T23:59:59.000Z

353

Atmospheric-pressure dielectric barrier discharge (DBD) in air : plasma characterisation for skin therapy.  

E-Print Network (OSTI)

??A pulsed atmospheric-pressure dielectric barrier discharge (DBD) device operating in air is investigated for medical applications such as for skin disinfection and promotion of wound (more)

Rajasekaran, Priyadarshini

2011-01-01T23:59:59.000Z

354

Soft Plasma Polymerization of Gas State Precursors from an Atmospheric Pressure Corona Plasma Discharge  

Science Journals Connector (OSTI)

Soft Plasma Polymerization of Gas State Precursors from an Atmospheric Pressure Corona Plasma Discharge ... Application of nonequilibrium plasmas in organic chemistry ...

P. Anthony F. Herbert; Liam ONeill; Justyna Jaroszy?ska-Woli?ska

2009-09-11T23:59:59.000Z

355

Influence of Peroxynitrite in Gliding Arc Discharge Treatment of Alizarin Red S and Postdischarge Effects  

Science Journals Connector (OSTI)

(15-17) Some nonthermal plasma techniques, such as corona,(18, 19) dielectric barrier discharge (DBD),(20) or gliding arc discharges (GAD) belong to these AOPs: they burn at atmospheric pressure in conditions halfway from thermal and nonthermal plasmas, since electrons and heavy particles are not fully thermalized as they are in thermal plasmas. ... Technical cost evaluation takes into account the reagents used and electricity consumption. ... Kamgang Youbi, G.; Herry, J.-M.; Bellon-Fontaine, M.-N.; Brisset, J.-L.; Doubla, A.; Natali, M.Evidence of the temporal post-discharge decontamination of bacteria by gliding electric discharges: Application to Hafnia alvei Appl. ...

D. R. Merouani; F. Abdelmalek; M. R. Ghezzar; A. Semmoud; A. Addou; J. L. Brisset

2012-12-24T23:59:59.000Z

356

Electric organ discharge (EOD) and prey capture behaviour in the electric eel, Electrophorus electricus  

Science Journals Connector (OSTI)

The prey capture behaviour and the pattern of the associated electric organ discharge (EOD) were studied in the electric eel, Electrophorus electricus.

R. Bauer

357

Real time monitoring and compensation system for micro electro discharge machining.  

E-Print Network (OSTI)

??The rapid growth in demand for micro parts has urged todays manufacturing industry to establish a reliable technique for micromachining. Micro Electrical Discharge Machining (EDM), (more)

Aligiri, Erwin.

2011-01-01T23:59:59.000Z

358

An analysis of the electro discharge machining process through remote monitoring .  

E-Print Network (OSTI)

??The Electro Discharge Machining (EDM) process is a machining process that is widespread, and a constant search for further optimisation thereof exists. Additionally, the need (more)

Vermaak, Jan Hendrik

2012-01-01T23:59:59.000Z

359

Investigation of Dry and Near-Dry Electrical Discharge Milling Processes.  

E-Print Network (OSTI)

??The dry and near-dry electrical discharge machining (EDM) processes are investigated in this research. Dry EDM uses gas to replace the liquid dielectric fluid in (more)

Tao, Jia

2008-01-01T23:59:59.000Z

360

Period doubling cascade in glow discharges: Local versus global differential conductivity  

Science Journals Connector (OSTI)

Short planar glow discharges coupled to a resistive layer exhibit a wealth of spontaneous spatiotemporal patterns. Due to similarities with other pattern forming systems that are described by reaction-diffusion models, several authors have tried to derive such models from discharge physics. We investigate the temporal oscillations of the discharge system and find a cascade of period doubling events. This shows that the inner structure of the discharge is more complex than can be described by a two-component reaction-diffusion-model with negative differential conductivity. We also derive an alternative reduced model.

Danijela D. ija?i?, Ute Ebert, and Ismail Rafatov

2004-11-23T23:59:59.000Z

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


361

Comparison of measurement methods for partial discharge measurement in power cables:.  

E-Print Network (OSTI)

??Nowadays there are many partial discharge (PD) measurement systems on the market. There are systems that measure according to the IEC60270 standard (conventional measurement) and (more)

Van Veen, L.W.

2014-01-01T23:59:59.000Z

362

Active electron energy distribution function control in direct current discharge using an auxiliary electrode  

SciTech Connect

The electron energy distribution functions are studied in the low voltage dc discharge with a constriction, which is a diaphragm with an opening. The dc discharge glows in helium and is sustained by the electron current emitted from a heated cathode. We performed kinetic simulations of dc discharge characteristics and electron energy distribution functions for different gas pressures (0.8 Torr-4 Torr) and discharge current of 0.1 A. The results of these simulations indicate the ability to control the shape of the electron energy distribution functions by variation of the diaphragm opening radius.

Schweigert, I. V. [Institute of Theoretical and Applied Mechanics, Novosibirsk 630090 (Russian Federation) [Institute of Theoretical and Applied Mechanics, Novosibirsk 630090 (Russian Federation); George Washington University, Washington, DC 20052 (United States); Kaganovich, I. D. [Princeton Plasma Physics Laboratory, Princeton, NJ 08543 (United States)] [Princeton Plasma Physics Laboratory, Princeton, NJ 08543 (United States); Demidov, V. I. [West Virginia University, Morgantown, WV 26506 (United States) [West Virginia University, Morgantown, WV 26506 (United States); St. Petersburg State University, St. Petersburg (Russian Federation)

2013-10-15T23:59:59.000Z

363

Micro Electro Discharge Machining of Electrically Nonconductive Ceramics  

SciTech Connect

EDM is a known process for machining of hard and brittle materials. Due to its noncontact and nearly forceless behaviour, it has been introduced into micro manufacturing and through constant development it is now an important means for producing high-precision micro geometries. One restriction of EDM is its limitation to electrically conducting materials.Today many applications, especially in the biomedical field, make use of the benefits of ceramic materials, such as high strength, very low wear and biocompatibility. Common ceramic materials such as Zirconium dioxide are, due to their hardness in the sintered state, difficult to machine with conventional cutting techniques. A demand for the introduction of EDM to these materials could so far not be satisfied because of their nonconductive nature.At the Chemnitz University of Technology and the Fraunhofer IWU, investigations in the applicability of micro-EDM for the machining of nonconductive ceramics are being conducted. Tests are undertaken using micro-EDM drilling with Tungsten carbide tool electrodes and ZrO{sub 2} ceramic workpieces. A starting layer, in literature often referred to as 'assisting electrode' is used to set up a closed electric circuit to start the EDM process. Combining carbon hydride based dielectric and a specially designed low-frequency vibration setup to excite the workpiece, the process environment can be held within parameters to allow for a constant EDM process even after the starting layer is machined. In the experiments a cylindrical 120 {mu}m diameter Tungsten carbide tool electrode and Y{sub 2}O{sub 3}- and MgO- stabilized ZrO{sub 2} worpieces are used. The current and voltage signals of the discharges within the different stages of the process (machining of the starting layer, machining of the base material, transition stage) are recorded and their characteristics compared to discharges in metallic material. Additionally, the electrode feed is monitored. The influences of the process parameters are analysed with regard to the discharge type, electrode wear and process speed.Using the found parameters, micro geometries can be successfully machined into nonconductive Y{sub 2}O{sub 3}- and MgO- stabilized ZrO{sub 2} ceramic by means of micro-EDM.

Schubert, A. [Chair Micromanufacturing Technology, Faculty of Mechanical Engineering, Chemnitz University of Technology, 09107 Chemnitz (Germany); Fraunhofer Institute for Machine Tools and Forming Technology IWU, 09126 Chemnitz (Germany); Zeidler, H.; Hackert, M. [Chair Micromanufacturing Technology, Faculty of Mechanical Engineering, Chemnitz University of Technology, 09107 Chemnitz (Germany); Wolf, N. [Fraunhofer Institute for Machine Tools and Forming Technology IWU, 09126 Chemnitz (Germany)

2011-05-04T23:59:59.000Z

364

Mass dependency of turbulent parameters in stationary glow discharge plasmas  

SciTech Connect

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.

Titus, J. B.; Alexander, A. B. [Florida A and M University, Tallahassee, Florida 32310 (United States)] [Florida A and M University, Tallahassee, Florida 32310 (United States); Wiggins, D. L. [Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53703 (United States)] [Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin 53703 (United States); Johnson, J. A. III [Pyramid Plasmas LLC, Lawrenceville, Georgia 30043 (United States)] [Pyramid Plasmas LLC, Lawrenceville, Georgia 30043 (United States)

2013-05-15T23:59:59.000Z

365

Active charge/passive discharge solar heating systems: thermal analysis  

SciTech Connect

The performance of active charge/passive discharge solar space-heating systems is analyzed. This type of system combines liquid-cooled solar collector panels with a massive integral storage component that passively heats the building interior by radiation and free convection. The TRNSYS simulation program is used to evaluate system performance and to provide input for the development of a simplified analysis method. This method, which provides monthly calculations of delivered solar energy, is based on Klein's Phi-bar procedure and data from hourly TRNSYS simulations. The method can be applied to systems using a floor slab, a structural wall, or a water tank as the storage component. Important design parameters include collector area and orientation, building heat loss, collector and heat-exchanger efficiencies, storage capacity, and storage to room coupling.

Swisher, J.

1981-01-01T23:59:59.000Z

366

Glow discharge pretreatment tools for vacuum web coating  

Science Journals Connector (OSTI)

In the last few years plasma pre-treatment has been established as a powerful tool to increase the quality in vacuum web coating whereas, the effect of web pre-treatment under atmospheric conditions is declining due to several reasons, glow discharge assisted in linein vacuo pre-treatment is much more reliable. Two tools for plasma pre-treatment are presented here. Both are easily scalable as to comply with the needs of large area web coating with a typical coating width of over 2 m, and they operate in a pressure range that is compatible with sputtering and evaporation processes taking place in the same vacuum system. The effect of the glow discharge on polymeric web depends on electron temperature (typically a few electron volts), electron density (ranging typically from 10?9 to 10?11 cm?3), ion energy, and chemical composition. The mentioned electron density range is indispensable to meet the demands of satisfactory production speeds, in particular with evaporation. By means of the so-called Treatmag, an abnormal glow discharge enhanced by a closed loop tunnel shaped magnetic field is generated in the 10?2 mbar pressure range. This tool is widely used for the improvement of metallic coatings on polymeric web. The ion energies typically range well below 70 eV. Indeed, water vapor and oxygen permeation rates through OPP have been quartered respectively, third. The so-called RF hollow anode described herein next is comprising a capacitively coupled, asymmetric 13.56 \\{MHz\\} radio frequency glow discharge driven in a hollow life electrode, operated in the 10?2 mbar pressure range. The easily scaleable RF hollow anode is dedicated to the dynamic pre-treatment or coating of either dielectric or metal web (or rigid sheet), and can be used in conjunction either with sputtering or, at line speeds of typical 510 m/s, with evaporation processes. The RF hollow anode renders ion fluxes of up to 1 mA/cm2 at energies between 100 and several hundred electron volts. So far it complements the Treatmag, which yields ions with considerably lower energies. The adhesion improvement by the RF hollow anode we attribute to a pronounced increase of the cross-link density (amorphization) in the near surface region of in-plane oriented polymeric web commonly used. Ex situ XPS spectra taken 3 days after venting from PET samples treated at high web speeds are given. It is mentioned that the industrial application of the RF hollow anode is based on the surface modification as yielded in-situ/in-vacuo almost immediately after treatment. In case the RF hollow anode is operated with hydrocarbon, silane or other gases, it can also be employed for thin base-coatings or top-coatings on web material.

M. Geisler; G. Hoffmann; R. Ludwig; G. Steiniger

2004-01-01T23:59:59.000Z

367

A uniform glow discharge plasma source at atmospheric pressure  

Science Journals Connector (OSTI)

An atmospheric-pressure uniform continuous glowplasma was produced in ambient air assisted by argon feeding gas using a 13.56 MHz rf source. Based on the measured currentvoltage curve and optical emission spectrum intensity the plasma showed typical glow discharge characteristics free from streamers and arc. The measured rotational and vibrational temperatures were in the range of 490 to 630 K and 2000 to 3300 K respectively within the operation range of argon flow rate and rf power. From the spatial measurement of total optical emission intensity and rotational and vibrational temperatures the plasma shows very high uniformity (over 93%) in the lengthwise direction. The plasma size for this study was 200 mm50 mm5 mm although a plasma was produced in the scaled-up version of 600 mm in length aiming for large-area plasma applications.

Se Youn Moon; W. Choe; B. K. Kang

2004-01-01T23:59:59.000Z

368

Safety assessment of discharge chute isolation barrier preparation and installation  

SciTech Connect

This analysis examines activities associated with the installation of isolation barriers in the K Basins at the Hanford Reservation. This revision adds evaluation of barrier drops on stored fuel and basin floor, identifies fuel which will be moved and addresses criticality issues with sludge. The safety assessment is made for the activities for the preparation and installation of the discharge chute isolation barriers. The safety assessment includes a hazard assessment and comparisons of potential accidents/events to those addressed by the current safety basis documentation. No significant hazards were identified. An evaluation against the USQ evaluation questions was made and the determination made that the activities do not represent a USQ. Hazard categorization techniques were used to provide a basis for readiness review classifications.

Meichle, R.H.

1994-10-21T23:59:59.000Z

369

Equilibrium and Stability of Partial Toroidal Plasma Discharges  

SciTech Connect

The equilibrium and stability of partial toroidal flux ropes are studied in detail in the laboratory, motivated by ubiquitous loop structures on the solar surface. The flux ropes studied here are magnetized arc discharges formed in the Magnetic Reconnection Experiment (MRX). It is found that these loops robustly maintain their equilibrium on time scales much longer than the Alfven time over a wide range of plasma current, guide eld strength, and angle between electrodes, even in the absence of a strapping fi eld. Additionally, the external kink stability of these flux ropes is found to be governed by the Kruskal-Shafranov limit for a flux rope with line-tied boundary conditions at both ends (q > 1).

E. Oz, C. E. Myers, M. Yamada, H. Ji, R. Kulsrud, and J. Xie

2011-01-04T23:59:59.000Z

370

Review on electrical discharge plasma technology for wastewater remediation  

Science Journals Connector (OSTI)

Abstract As wastewater remediation becomes a global concern, the development of innovative advanced oxidation processes for wastewater treatment is still a major challenge. With regard to its fast removal rate and environmental compatibility, plasma technology is considered as a promising remediation technology for water remediation. The principles of electrical plasma with liquids for pollutant removal and the reactors of various electrical discharge types are outlined in this review. To improve energy efficiency, combination of plasma technology with catalysts has attracted significant attention. The present review is concerned about present understanding of the mechanisms involved in these combined processes. Further on, detailed discussions are given of the effects of various factors on the performance of pulsed electrical plasma technology in water treatment processes. Finally, special attention is paid to the future challenges of plasma technology utilized for industrial wastewater treatment.

Bo Jiang; Jingtang Zheng; Shi Qiu; Mingbo Wu; Qinhui Zhang; Zifeng Yan; Qingzhong Xue

2014-01-01T23:59:59.000Z

371

Turbulence characteristics of electron cyclotron and ohmic heated discharges  

E-Print Network (OSTI)

Turbulence characteristics of electron cyclotron (EC) and ohmic heated (OH) discharges has been analyzed by electrostatic gyrokinetic simulations with GYRO [J. Candy, R.E. Waltz, Journal of Computational Physics 186, 545-581 (2003)] aiming to find insights into the effect of auxiliary heating on the transport. Trapped electron modes are found to be unstable in both OH and the EC heated scenarios. In the OH case the main drive is from the density gradient and in the EC case from the electron temperature gradient. The growth rates and particle fluxes exhibit qualitatively different scaling with the electron-to-ion temperature ratios in the two cases. This is mainly due to the fact that the dominant drives and the collisionalities are different. The inward flow velocity of impurities and the impurity diffusion coefficient decreases when applying EC heating, which leads to lower impurity peaking, consistently with experimental observations.

Pusztai, Istvan; Fulop, Tunde; Timchenko, Natalia

2011-01-01T23:59:59.000Z

372

Characteristics of microinstabilities in electron cyclotron and ohmic heated discharges  

SciTech Connect

Characteristics of microinstabilities in electron cyclotron (EC) and ohmic heated (OH) discharges in the T10 tokamak have been analyzed by linear electrostatic gyrokinetic simulations with gyro[J. Candy and R. E. Waltz, J. Comput. Phys. 186, 545 (2003)] aiming to find insights into the effect of auxiliary heating on the transport. Trapped electron modes are found to be unstable in both OH and the EC heated scenarios. In the OH case the main drive is from the density gradient and in the EC case from the electron temperature gradient. The growth rates and particle fluxes exhibit qualitatively different scaling with the electron-to-ion temperature ratios in the two cases. This is mainly due to the fact that the dominant drives and the collisionalities are different. The inward flow velocity of impurities and the impurity diffusion coefficient decreases when applying EC heating, which leads to lower impurity peaking, consistently with experimental observations.

Pusztai, I.; Moradi, S.; Fueloep, T. [Department of Applied Physics, Nuclear Engineering, Chalmers University of Technology and Euratom-VR Association, Goeteborg (Sweden); Timchenko, N. [Institute of Tokamak Physics, NRC ''Kurchatov Institute,'' 123182, Kurchatov Sq. 1, Moscow (Russian Federation)

2011-08-15T23:59:59.000Z

373

Calculation Method for the Projection of Future Spent Nuclear Fuel Discharges  

SciTech Connect

This report describes the calculation method developed for the projection of future utility spent nuclear fuel (SNF) discharges in regard to their timing, quantity, burnup, and initial enrichment. This projection method complements the utility-supplied RW-859 data on historic discharges and short-term projections of SNF discharges by providing long-term projections that complete the total life cycle of discharges for each of the current U.S. nuclear power reactors. The method was initially developed in mid-1999 to update the SNF discharge projection associated with the 1995 RW-859 utility survey (CRWMS M&O 1996). and was further developed as described in Rev. 00 of this report (CRWMS M&O 2001a). Primary input to the projection of SNF discharges is the utility projection of the next five discharges from each nuclear unit, which is provided via the revised final version of the Energy Information Administration (EIA) 1998 RW-859 utility survey (EIA 2000a). The projection calculation method is implemented via a set of Excel 97 spreadsheets. These calculations provide the interface between receipt of the utility five-discharge projections that are provided in the RW-859 survey, and the delivery of projected life-cycle SNF discharge quantities and characteristics in the format requisite for performing logistics analysis to support design of the Civilian Radioactive Waste Management System (CRWMS). Calculation method improvements described in this report include the addition of a reactor-specific maximum enrichment-based discharge burnup limit. This limit is the consequence of the enrichment limit, currently 5 percent. which is imposed as a Nuclear Regulatory Commission (NRC) license condition on nuclear fuel fabrication plants. In addition, the calculation method now includes the capability for projecting future nuclear plant power upratings, consistent with many such recent plant uprates and the prospect of additional future uprates. Finally. this report summarizes the results of the 2002 Reference SNF Discharge Projection.

B. McLeod

2002-02-28T23:59:59.000Z

374

Diagnostics of a glow discharge used to produce hydrogenated amorphous silicon films. Final subcontract report  

SciTech Connect

This report and recent publications cited summarize our measurements of the neutral radicals produced in pure silane discharges, our measurements of the interaction of silane with a growing amorphous silicon surface, qualitative models of discharge neutral radical chemistry, and quantitative models of dc discharge ion chemistry. All radicals of the monosilane and disilane groups have been measured and are reported as a function of discharge parameters, but not yet for the full range of parameters that must be investigated for detailed analysis. Observations of the reaction of SiH/sub 4/ with a hot amorphous silicon surface are given. These are closely related to the dominant discharge film deposition mechanism of SiH/sub 3/ reacting with a hydrogen covered amorphous silicon surface and a surface reaction model is suggested that explains some but not all of our data. The dc discharge model is used to obtain quantitative predictions of the ion species at the cathode surface of a dc discharge. This is compared to observations and used to explain the observations at our laboratory and other laboratories. We conclude that most but not all features of the ion chemistry in dc discharges of pure silane can be relatively well understood from this model.

Gallagher, A.

1984-11-01T23:59:59.000Z

375

Helium corona-assisted air discharge Nan Jiang, Lei Gao, Ailing Ji, and Zexian Caoa)  

E-Print Network (OSTI)

of non-thermal plasmas. By taking advantage of the low onset voltage for helium corona, air discharge of vacuum. In order to reduce the expense associated with vacuum systems, many atmospheric non- thermal profit the application of non-thermal plasmas. Inspired by our own research on gas discharges, espe

Zexian, Cao

376

Vacuum 71 (2003) 417436 The barrier discharge: basic properties and applications to  

E-Print Network (OSTI)

discharge; Non-equilibrium plasma; Cross-correlation spectroscopy; Atmospheric pressure glow discharge field of applications are the non-thermal plasma condi- tions at low gas temperatures and at elevated-equilibrium plasmas in a controllable way at atmospheric pressure, and at moderate gas temperature. They provide

Greifswald, Ernst-Moritz-Arndt-Universität

377

Survival in lake water of Klebsiella pneumoniae discharged by a paper mill.  

Science Journals Connector (OSTI)

...Klebsiella pneumoniae discharged by a paper mill. S I Niemela P Vaatanen We investigated...receiving bacteria mainly from a paper mill. An mFC-inositol-carbenicillin-agar...Klebsiella pneumoniae discharged by a paper mill. | We investigated survival of Klebsiella...

S I Niemel; P Vtnen

1982-08-01T23:59:59.000Z

378

Electric organ discharge patterns during group hunting by a mormyrid fish  

E-Print Network (OSTI)

Electric organ discharge patterns during group hunting by a mormyrid fish Matthew E. Arnegard1 Department of Biology, University of Virginia, Charlottesville, VA 22904, USA Weakly electric fish emit and receive low-voltage electric organ discharges (EODs) for electrolocation and communication. Since

Hopkins, Carl D.

379

Synthesis Gas Production from Partial Oxidation of Methane with Air in AC Electric Gas Discharge  

E-Print Network (OSTI)

Synthesis Gas Production from Partial Oxidation of Methane with Air in AC Electric Gas Discharge K 73019 Received October 11, 2002 In this study, synthesis gas production in an AC electric gas discharge of methane and air mixtures at room temperature and ambient pressure was investigated. The objective

Mallinson, Richard

380

Spectroscopy of atmospheric pressure air jet plasma in transverse arc discharge Valeriy Chernyak1  

E-Print Network (OSTI)

Spectroscopy of atmospheric pressure air jet plasma in transverse arc discharge Valeriy Chernyak1 of the atmospheric pressure air jet plasma in the transverse cw dc arc discharge of high voltage was done. Within.g. application of approximation of the optically thin plasma in conditions of high atmospheric pressure

Paris-Sud XI, Université de

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


381

Interplay of discharge and gas flow in atmospheric pressure plasma jets Nan Jiang,1  

E-Print Network (OSTI)

Interplay of discharge and gas flow in atmospheric pressure plasma jets Nan Jiang,1 JingLong Yang,2 2011) Interplay of discharge and gas flow in the atmospheric pressure plasma jets generated with three:10.1063/1.3581067] I. INTRODUCTION The atmospheric pressure plasma jet (APPJ) that is nor- mally

Zexian, Cao

382

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

E-Print Network (OSTI)

Attenuation of single-tone ultrasound by an atmospheric glow discharge plasma barrier Vadim P through an atmospheric pressure glow discharge in air was studied experimentally. The plasma obtained in and around the plasma using laser-induced Rayleigh scattering technique. Results show

?tügen, Volkan

383

Fundamentals of Discharge Initiation in Gas-Fed Pulsed Plasma Thrusters  

E-Print Network (OSTI)

-conductivity arc discharges are required for critically-damped matching of circuit components, and that relativelyFundamentals of Discharge Initiation in Gas-Fed Pulsed Plasma Thrusters IEPC-2005-153 Presented at the 29th International Electric Propulsion Conference, Princeton University October 31 ­ November 4, 2005

Choueiri, Edgar

384

Development of Corona Discharge Apparatus for Supersonic Flow Philip K. Panicker*  

E-Print Network (OSTI)

are inherently at high pressures and densities, and thus arc discharge breakdown occurs at higher voltages1 Development of Corona Discharge Apparatus for Supersonic Flow Philip K. Panicker* , U Department, University of Texas at Arlington, Arlington, TX 76019 and Bernard T. Svihel¶ Electrical

Texas at Arlington, University of

385

Simple Method of Preparing Graphene Flakes by an Arc-Discharge Method  

Science Journals Connector (OSTI)

Simple Method of Preparing Graphene Flakes by an Arc-Discharge Method ... It is noteworthy that graphene can be doped with boron and nitrogen by carrying out the electric discharge in the presence of B2H6 and pyridine, respectively. ...

K. S. Subrahmanyam; L. S. Panchakarla; A. Govindaraj; C. N. R. Rao

2009-02-20T23:59:59.000Z

386

Hormonal control of sexual differentiation: changes in electric organ discharge waveform  

Science Journals Connector (OSTI)

...Africa, the electric organ dis-charges (EOD's) of males and females B. brachyistius...the "electromotoneurons" (6, 7). The EOD is elicited by a burst of three spikes in...Oscilloscope records of electric organ discharge (EOD) waveforms scaled to the same peak-to-peak...

AH Bass; CD Hopkins

1983-05-27T23:59:59.000Z

387

Longitudinal discharge XeCl excimer laser with automatic UV preionization  

SciTech Connect

A longitudinal discharge XeCl 308-nm excimer laser operated with automatic spark UV preionization is reported. Laser oscillation has been obtained using a four-segmented longitudinal discharge tube of 260 mm length and 4 mm inner diameter and employing a capacitor transfer circuit with commercially available doorknob ceramic capacitors. Spark UV preionization has been found to increase the laser output energy.

Furuhashi, H.; Hiramatsu, M.; Goto, T.

1987-04-06T23:59:59.000Z

388

PARTIAL DISCHARGE TESTING OF DEFECTIVE THREE-PHASE PILC CABLE UNDER RATED CONDITIONS  

E-Print Network (OSTI)

PARTIAL DISCHARGE TESTING OF DEFECTIVE THREE-PHASE PILC CABLE UNDER RATED CONDITIONS J. A. Hunter 1 lifespan. An increase in the failure rates of paper insulated lead covered (PILC) cables that make up is to document the effects of mechanical stress on the generation of partial discharge (PD) for cables of PILC

Southampton, University of

389

On the description of the bearing capacity of electro-discharge machined G.P Petropoulosa  

E-Print Network (OSTI)

electro-discharge machining (EDM) is the most widely and successfully applied for the machining of variousOn the description of the bearing capacity of electro-discharge machined surfaces G.P Petropoulosa with the investigation of a set of "non-common" surface topography parameters of EDMed surfaces that describe

Aristomenis, Antoniadis

390

Review of river discharge records and gauging stations in the Rwenzori Mountains of Uganda  

E-Print Network (OSTI)

Review of river discharge records and gauging stations in the Rwenzori Mountains of Uganda Richard Department Directorate of Water Development Entebbe, Uganda November 2004 Review of river discharge records and gauging stations in the Rwenzori Mountains of Uganda 1 #12;Summary This report provides an overview

Jones, Peter JS

391

Interaction between shallow groundwater, saline surface water and contaminant discharge at a seasonally  

E-Print Network (OSTI)

the behaviour of the hydrocarbon plume at the groundwater/surface water transition zone to be strongly B.V. All rights reserved. Keywords: Ground water; Surface water; Hydrocarbons; Discharge; TidesInteraction between shallow groundwater, saline surface water and contaminant discharge

Clement, Prabhakar

392

Comparative Study of Plasma Anodization of Silicon in a Column of a dc Glow Discharge  

Science Journals Connector (OSTI)

A comparative study of plasma anodization of silicon in the column of a dc oxygen glow discharge is presented. Quantitative results for growth rates of silicon dioxide in the negative glow Faraday dark space positive column and the anode fall are given. It is observed that the growth rate is higher in the positive column than the other regions of the discharge.

M. A. Copeland; R. Pappu

1971-01-01T23:59:59.000Z

393

Operation of ferroelectric plasma sources in a gas discharge modea... A. Dunaevskyb)  

E-Print Network (OSTI)

. Fisch Princeton Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New JerseyOperation of ferroelectric plasma sources in a gas discharge modea... A. Dunaevskyb) and N. J plasma sources in vacuum are known as sources of ablative plasma, formed due to surface discharge

394

GRR/Section 15-OR-a - Air Contaminant Discharge Permit | Open Energy  

Open Energy Info (EERE)

5-OR-a - Air Contaminant Discharge Permit 5-OR-a - Air Contaminant Discharge Permit < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 15-OR-a - Air Contaminant Discharge Permit 15ORAAirContaminantDischargePermit (1).pdf Click to View Fullscreen Contact Agencies Oregon Department of Environmental Quality Regulations & Policies ORS Chapter 468a OAR 340-209 OAR 340-216 340-216-0020 (Table 1) Triggers None specified Click "Edit With Form" above to add content 15ORAAirContaminantDischargePermit (1).pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range. Flowchart Narrative The Oregon Department of Environmental Quality (DEQ) regulates air

395

The Determination of the Location of Contact Electrification-Induced Discharge Events  

Science Journals Connector (OSTI)

As the charge on the sphere accumulates, the resulting electric field at the surface of the sphere eventually exceeds the breakdown limit of air and causes a discharge. ... (39) Understanding the factors that influence the probability of discharge will contribute to a fundamental understanding of the charging and discharging that characterize contact electrification, as well as to the development of strategies to control the likelihood and/or location of discharges, and thus to minimize the risk of sparking. ... Using this configuration of the RST, we demonstrated that the location of a plasma-oxidized wedge (with an arc of 0.11? rad) on a PS dish can be determined based on our method of locating discharges. ...

Sarah J. Vella; Xin Chen; Samuel W. Thomas III; Xuanhe Zhao; Zhigang Suo; George M. Whitesides

2010-09-29T23:59:59.000Z

396

Studies of Low-Current Back-Discharge in Point-Plane Geometry with Dielectric Layer  

SciTech Connect

The paper presents results of spectroscopic investigations of back-discharges generated in the point-plane electrode geometry in ambient air at atmospheric pressure, with the plane electrode covered with a dielectric layer. Fly ash from an electrostatic precipitator of a coal-fired power plant was used as the dielectric layer in these investigations. The discharges for positive and negative polarities of the needle electrode were studied by measuring optical emission spectra at two regions of the discharge: near the needle electrode and dielectric layer surface. The visual forms of the discharge were recorded and correlated with the current-voltage characteristics and optical emission spectra. The back-arc discharge was of particular interest in these studies due to its detrimental effects it causes in electrostatic precipitators.

Jaworek, Anatol; Rajch, Eryk [Institute of Physics Pomeranian Pedagogical Academy, Arciszewskiego 22b, 76-200 Slupsk (Poland); Krupa, Andrzej; Czech, Tadeusz; Lackowski, Marcin [Institute of Fluid Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-952 Gdansk (Poland)

2006-01-15T23:59:59.000Z

397

GRR/Section 14-AK-b - Alaska Pollutant Discharge Elimination System Permit  

Open Energy Info (EERE)

GRR/Section 14-AK-b - Alaska Pollutant Discharge Elimination System Permit GRR/Section 14-AK-b - Alaska Pollutant Discharge Elimination System Permit < GRR Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections Section 14-AK-b - Alaska Pollutant Discharge Elimination System Permit 14AKBAlaskaPollutantDischargeEliminationSystemPermit (1).pdf Click to View Fullscreen Contact Agencies Alaska Department of Environmental Conservation United States Environmental Protection Agency Regulations & Policies Alaska Statutes Alaska Administrative Code Triggers None specified Click "Edit With Form" above to add content 14AKBAlaskaPollutantDischargeEliminationSystemPermit (1).pdf Error creating thumbnail: Page number not in range. Error creating thumbnail: Page number not in range.

398

Association of Discharge Home with Home Health Care and 30-Day Readmission after Pancreatectomy  

Science Journals Connector (OSTI)

Background We sought to determine if discharge home with home health care (HHC) is an independent predictor of increased readmission after pancreatectomy. Study Design We examined 30-day readmissions in patients undergoing pancreatectomy using the Healthcare Cost and Utilization Project State Inpatient Database for California from 2009 to 2011. Readmissions were categorized as severe or nonsevere using the Modified Accordion Severity Grading System. Multivariable logistic regression models were used to examine the association of discharge home with HHC and 30-day readmission using discharge home without HHC as the reference group. Propensity score matching was used as an additional analysis to compare the rate of 30-day readmission between patients discharged home with HHC with patients discharged home without HHC. Results Of 3,573 patients who underwent pancreatectomy, 752 (21.0%) were readmitted within 30 days of discharge. In a multivariable logistic regression model, discharge home with HHC was an independent predictor of increased 30-day readmission (odds ratio= 1.37; 95% CI, 1.111.69; p= 0.004). Using propensity score matching, patients who received HHC had a significantly increased rate of 30-day readmission compared with patients discharged home without HHC (24.3% vs 19.8%; p < 0.001). Patients discharged home with HHC had a significantly increased rate of nonsevere readmission compared with those discharged home without HHC, by univariate comparison (19.2% vs 13.9%; p < 0.001), but not severe readmission (6.4% vs 4.7%; p= 0.08). In multivariable logistic regression models, excluding patients discharged to facilities, discharge home with HHC was an independent predictor of increased nonsevere readmissions (odds ratio= 1.41; 95% CI, 1.111.79; p= 0.005), but not severe readmissions (odds ratio= 1.31; 95% CI, 0.881.93; p= 0.18). Conclusions Discharge home with HHC after pancreatectomy is an independent predictor of increased 30-day readmission; specifically, these services are associated with increased nonsevere readmissions, but not severe readmissions.

Dominic E. Sanford; Margaret A. Olsen; Kerry M. Bommarito; Manish Shah; Ryan C. Fields; William G. Hawkins; David P. Jaques; David C. Linehan

2014-01-01T23:59:59.000Z

399

Peroxynitrite: A Re-examination of the Chemical Properties of Non-thermal Discharges Burning in Air Over Aqueous Solutions  

Science Journals Connector (OSTI)

The main compounds of non-thermal plasmas generated by a discharge in humid air at atmospheric pressure are re-examined to explain the twin chemical properties of discharges over aqueous waste solutions, i.e. ...

Jean-Louis Brisset; Eugen Hnatiuc

2012-08-01T23:59:59.000Z

400

Influence of energy contributions to a high-voltage atmospheric-pressure discharge on the efficiency of conversion of ethanol  

Science Journals Connector (OSTI)

The results of experimental investigations of the conversion of ethanol in a high-voltage atmospheric-pressure discharge have been presented. The influence of the energy parameters of the discharge on the yield a...

S. A. Zhdanok; A. V. Krauklis; P. P. Samtsov

2006-11-01T23:59:59.000Z

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


401

Initiation of a low-pressure glow discharge in a plasma electron source with a ribbon beam  

Science Journals Connector (OSTI)

Results are presented from an experimental investigation of a low-pressure glow discharge with a wedge-shaped hollow cathode in a plasma electron source, where this discharge is initiated by reflex...

V. Ya. Martens

1999-07-01T23:59:59.000Z

402

MERCURY OXIDIZATION IN NON-THERMAL PLASMA BARRIER DISCHARGE SYSTEM  

SciTech Connect

In the past decade, the emission of toxic elements from human activities has become a matter of great public concern. Hg, As, Se and Cd typically volatilize during a combustion process and are not easily caught with conventional air pollution control techniques. In addition, there is no pollution prevention technique available now or likely be available in the foreseeable future that can prevent the emission of these trace elements. These trace elements pose additional scientific challenge as they are present at only ppb levels in large gas streams. Mercury, in particular, has attracted significant attention due to its high volatility, toxicity and potential threat to human health. In the present research work, a non-thermal plasma dielectric barrier discharge technique has been used to oxidize Hg{sup 0}(g) to HgO. The basic premise of this approach is that Hg{sup 0} in vapor form cannot be easily removed in an absorption tower whereas HgO as a particulate is amiable to water scrubbing. The work presented in this report consists of three steps: (1) setting-up of an experimental apparatus to generate mercury vapors at a constant rate and modifying the existing non-thermal plasma reactor system, (2) solving the analytical challenge for measuring mercury vapor concentration at ppb level, and (3) conducting experiments on mercury oxidation under plasma conditions to establish proof of concept.

V.K. Mathur

2003-02-01T23:59:59.000Z

403

Ultrahigh?Frequency Discharge in Atmospheric?Pressure Gas  

Science Journals Connector (OSTI)

A 2469 MHz discharge was generated at an open end of a coaxial waveguide through which atmospheric?pressure gas flowed. Argon served as a plasma?forming gas hydrogen and calcium as probe elements for the measurement of electron density and gas temperature respectively and sodium as a seed for increasing electron density. The density of excited hydrogen atoms the excitation temperature the electron density the ionizationtemperature and the gas temperature were measured at operating powers of 50 200 and 400 W. The plasma in the close vicinity of the electrode (0 to 0.5 mm from the terminus of the inner conductor) was not in the local thermal equilibrium at any power level investigated independently of the sodium seeding. At a distance between 1 and 3 mm from the electrode on the contrary the nonseeded plasma approached the local thermal equilibrium when the power was increased while the seeded plasma exhibited a deviation from the local thermal equilibrium. The deviation from the local thermal equilibrium in the nonseeded plasma can be interpreted to be due to inhomogeneity of the plasma. In the outer zone of the seeded plasma the excitation temperature was equal to the gas temperature but not to the ionizationtemperature. A separation of plasma components occurred which was depressed by the sodium seeding.

Seiichi Murayama

1968-01-01T23:59:59.000Z

404

Excimer emission from pulsed microhollow cathode discharges in xenon  

SciTech Connect

Direct current (dc) microhollow cathode discharge (MHCD) is an intense source for excimer radiation in vacuum ultraviolet at a wavelength of 172 nm in a high pressure xenon (Xe) gas. The concentration of precursors for the excimer formation, i.e., excited and ionized gas atoms, increases significantly by applying high voltage pulse onto the dc MHCD over the pulse duration range from 20 to 100 ns. The intensity of the excimer emission for the voltage pulse of 20 ns duration exceeds that of the emission intensity obtained from the same MHCD operated only in the dc mode, by one order of magnitude. In addition, the emission intensity increases by one order of magnitude over the pulse duration range from 20 to 100 ns. It can be assumed that the emission intensity of the MHCD source increases as long as the duration of the high voltage pulse is shorter than the electron relaxation time. For the high voltage pulse of 100 ns duration, the emission intensity has been found to be further enhanced by a factor of three when the gas pressure is increased from 200 to 800 mbar.

Lee, B.-J.; Nam, S. H. [Pohang Accelerator Laboratory, Pohang, Kyungbuk 790-784 (Korea, Republic of)] [Pohang Accelerator Laboratory, Pohang, Kyungbuk 790-784 (Korea, Republic of); Rahaman, H. [CSIRCEERI Pilani, Rajasthan 333031 (India)] [CSIRCEERI Pilani, Rajasthan 333031 (India); Iberler, M.; Jacoby, J. [Institute of Applied Physics, Goethe University, Max-von-Laue-Str. 1, 60438 Frankfurt am Main (Germany)] [Institute of Applied Physics, Goethe University, Max-von-Laue-Str. 1, 60438 Frankfurt am Main (Germany); Frank, K. [Physics Department 1, University of Erlangen Nuremberg, 91058 Erlangen (Germany)] [Physics Department 1, University of Erlangen Nuremberg, 91058 Erlangen (Germany)

2013-12-15T23:59:59.000Z

405

Effect of radio frequency discharge power on dusty plasma parameters  

SciTech Connect

The parameters of a two-dimensional dusty plasma consisting of six, 9 mum diameter particles trapped inside a radio frequency (rf) plasma sheath have been measured as a function of rf power in a 13.5 mtorr (1.8 Pa) argon discharge. The center-of-mass and breathing frequencies are found by projecting the cluster's Brownian motion onto the associated normal mode. The center-of-mass frequency (i.e., radial confinement) is insensitive to rf power. The Debye shielding parameter kappa, as found from the breathing frequency, increases from approx =0.5 to 2 as the square root of rf power. The Debye length decreases from approx =2.7 to 0.7 mm as the inverse of the square root of rf power. The average particle charge qapprox =-17 000e is effectively independent of rf power. These results are consistent with an electron temperature that is independent of rf power and an ion density that is directly proportional to rf power, where the Debye length is determined by the ion density in combination with the electron temperature.

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

2009-08-01T23:59:59.000Z

406

Experimental evidence of chaotic behavior in atmospheric pressure arc discharge  

SciTech Connect

Thermal plasma technology is already playing an important role in the production of new materials, in the destruction of toxic wastes, and in the development of safer and more efficient manufacturing and material processing applications. In free burning as well as in stabilized arc columns, the inherent movement of arc root results in fluctuation in arc voltage. A full knowledge and control over the arc root dynamics can effectively lengthen the life time, drastically improve performance and reliability in arc plasma devices. In this paper, the authors experimentally investigate the fluctuating voltage signals generated from an atmospheric pressure arc discharge produced in a hollow electrode plasma torch. For the first time, analysis of these signals reveal them to exhibit chaotic behavior. The present analysis is supported with real time behavior, phase portraits, power spectra and Lyapunov exponents. Dependence of system behavior on various control parameters is also investigated. This approach is interesting in the sense that it can lead to better understanding of physics for future researches on arc plasma jets and related devices.

Ghorui, S.; Sahasrabudhe, S.N.; Murthy, P.S.S.; Das, A.K.; Venkatramani, N.

2000-02-01T23:59:59.000Z

407

Plasma potential mapping of high power impulse magnetron sputtering discharges  

SciTech Connect

Pulsed emissive probe techniques have been used to determine the plasma potential distribution of high power impulse magnetron sputtering (HiPIMS) discharges. An unbalanced magnetron with a niobium target in argon was investigated for pulse length of 100 ?s at a pulse repetition rate of 100 Hz, giving a peak current of 170 A. The probe data were taken with a time resolution of 20 ns and a spatial resolution of 1 mm. It is shown that the local plasma potential varies greatly in space and time. The lowest potential was found over the targets racetrack, gradually reaching anode potential (ground) several centimeters away from the target. The magnetic pre-sheath exhibits a funnel-shaped plasma potential resulting in an electric field which accelerates ions toward the racetrack. In certain regions and times, the potential exhibits weak local maxima which allow for ion acceleration to the substrate. Knowledge of the local E and static B fields lets us derive the electrons EB drift velocity, which is about 105 m/s and shows structures in space and time.

Rauch, Albert; Mendelsberg, Rueben J.; Sanders, Jason M.; Anders, Andre

2011-12-20T23:59:59.000Z

408

Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters  

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

Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters

409

Modelling Of Magnetic Channels For Micro-droplets Filtering And Tests Of Their Efficiency In UHV Arc-discharges  

E-Print Network (OSTI)

Modelling Of Magnetic Channels For Micro-droplets Filtering And Tests Of Their Efficiency In UHV Arc-discharges

Strzyzewski, P; Mirowski, R; Sadowski, M; Tazzari, S; Witkowski, J

2005-01-01T23:59:59.000Z

410

Numerical simulations of electrical asymmetry effect on electronegative plasmas in capacitively coupled rf discharge  

SciTech Connect

Recently a so-called electrical asymmetry effect (EAE), which could achieve high-degree separate control of ion flux and energy in dual-frequency capacitively coupled radio-frequency (CCRF) discharges, was discovered theoretically by Heil et al. [J. Phys. D: Appl. Phys. 41, 165202 (2008)] and was confirmed by experiments and theory/numerical simulations later on for electropositive argon discharges. In this work simulations based on particle-in-cell/Monte Carlo collision are performed to study the EAE on electronegative oxygen plasmas in geometrically symmetric CCRF discharges. Dual frequency discharges operating at 13.56 and 27.12 MHz are simulated for different pressures and the results are compared with those of electropositive argon discharges at the same conditions. It is found that in general the EAE on oxygen discharges has similar behavior as on argon discharge: The self-bias voltage {eta} increases monotonically and almost linearly with the increase in the phase angle {theta} between the two driving voltages in the range 0<{theta}<90 deg. , and the maximum ion energy varies by a factor of 3 by adjusting {theta}. However, the ion flux varies with {theta} by {+-}12% for low pressure and by {+-}15% for higher pressure, due primarily to an enhanced plasma series resonance, which then leads to dramatic changes in plasma density, power absorption and consequently the electronegativity. This may place a limitation for achieving separate control of ion energy and flux for electronegative plasma via the EAE.

Zhang Quanzhi; Jiang Wei; Wang Younian [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China); Hou Lujing [Max Planck Institute for Extraterrestrial Physics, 85748 Garching (Germany)

2011-01-01T23:59:59.000Z

411

Comparative study of gel-based separated arc-discharge, HiPCO, and CoMoCAT carbon nanotubes  

E-Print Network (OSTI)

Nano Res 1 Comparative study of gel-based separated arc-discharge, HiPCO, and CoMoCAT carbon) Comparative Study of Gel-based Separated Arc-discharge, HiPCO, and CoMoCAT Carbon Nanotubes kinds of mainstream carbon nanotubes (arc-discharge, HiPCO, CoMoCAT) separated using low-cost gel

Zhou, Chongwu

412

Electroreduction of Oxygen in Polymer Electrolyte Fuel Cells by Activated Carbon Coated Cobalt Nanocrystallites Produced by Electric Arc Discharge  

Science Journals Connector (OSTI)

Electroreduction of Oxygen in Polymer Electrolyte Fuel Cells by Activated Carbon Coated Cobalt Nanocrystallites Produced by Electric Arc Discharge ... A recent review of the encapsulation of rare earth and iron group metals (Fe, Co, Ni) using electric arc discharge has been published by Saito. ... Nanotubes have been observed after activation of catalytically inactive carbon-coated Co nanocrystallites generated by electric arc discharge. ...

G. Lalande; D. Guay; J. P. Dodelet; S. A. Majetich; M. E. McHenry

1997-03-18T23:59:59.000Z

413

The Effect of the Electric Pulse Polarity on CO2 Reforming of CH4 Using Dielectric Barrier Discharge  

Science Journals Connector (OSTI)

For the CO2 reformation of CH4 using a plasma process to produce synthesis gas, various kinds of electric sources were used such as ac and dc corona discharges,1-4?glow discharge,5-7?or dielectric-barrier discharge. ... Its charge limits the voltage applied to the gas avoiding the transition to arc. ...

Hwaung Lee; Chung-Hun Lee; Jae-Wook Choi; Hyung Keun Song

2006-11-08T23:59:59.000Z

414

Effect of a floating electrode on an atmospheric-pressure non-thermal arc discharge  

Science Journals Connector (OSTI)

Characteristics of the atmospheric non-thermal ac arc air plasmas produced by a plasma generator with a floating electrode are investigated. The measurements show that with the help of the surface dielectric barrier discharges between the main electrodes and the floating electrode the ignition voltage of the non-thermal arc discharges can be reduced significantly and an arc discharge mode can be stabilized at high gas flow rates. The measuredtemperatures of the non-thermal arcs are at the level of 20003000 K under different operating conditions.

Zhi-Bin Wang; Guo-Xu Chen; Zhe Wang; Nan Ge; He-Ping Li; Cheng-Yu Bao

2011-01-01T23:59:59.000Z

415

Increasing the length of single-wall carbon nanotubes in a magnetically enhanced arc discharge  

SciTech Connect

It is demonstrated that a magnetic field has a profound effect on the length of a single-wall carbon nanotube (SWCNT) synthesized in the arc discharge. The average length of SWCNT increases by a factor of 2 in discharge with magnetic field as compared with the discharge without magnetic field, and the yield of long nanotubes with lengths above 5 {mu}m also increases. A model of SWCNT growth on metal catalyst in arc plasma was developed. Monte-Carlo simulations confirm that the increase of the plasma density in the magnetic field leads to an increase in the nanotube growth rate and thus leads to longer nanotubes.

Keidar, Michael [Department of Mechanical and Aerospace Engineering, George Washington University, Washington, District of Columbia 20052 (United States); Levchenko, Igor; Ostrikov, Kostya [Plasma Nanoscience, School of Physics, The University of Sydney, Sydney, New South Wales 2006 (Australia); Arbel, Tamir [Department of Material Science, University of Michigan, Ann Arbor, Michigan 48109 (United States); Alexander, Myriam [Department of Geophysical Science, University of Chicago, Chicago, Illinois 60637 (United States); Waas, Anthony M. [Department of Aerospace Engineering, University of Michigan, Ann Arbor, Michigan 48109 (United States)

2008-01-28T23:59:59.000Z

416

Submicrosecond pulsed atmospheric glow discharges sustained without dielectric barriers at kilohertz frequencies  

SciTech Connect

In this letter, the authors report the experimental observation of a large-volume atmospheric glow discharge sustained without dielectric barriers at 1 kHz. This barrier-free mode of operation is made possible with a submicrosecond pulsed excitation instead of the usual sinusoidal excitation. Its current-voltage characteristics are shown to be very different from conventional atmospheric dielectric barrier discharges, and its generation mechanism is studied with nanosecond resolved optical emission spectroscopy. The pulsed barrier-free atmospheric plasma is shown to produce very intense atomic oxygen emission line at 777 nm, up to one magnitude more intensive than that of a comparable atmospheric dielectric barrier discharge.

Walsh, J. L.; Shi, J. J.; Kong, M. G. [Department of Electronic and Electrical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU (United Kingdom)

2006-10-16T23:59:59.000Z

417

Room-Temperature Operation of DC Axially Discharged Fast Axial-Flow CO Laser  

Science Journals Connector (OSTI)

A compact CO laser with a DC axially discharged fast-axial flow has been operated at room temperature (270 300K), achieving ~ 165W per unit discharge length in CW mode under xenon (Xe) gas addition. A maximum power of 385W per unit gain length (1 m) has been similarly achieved with Xe gas at 235 275K. Dependence of output power on gas-flow velocity v , discharge current I dis, and gas composition is examined experimentally and theoretically explained, and dependence of oscillation lines on v is also investigated. Moreover, the effect of gas-flow velocity on gas temperature is also examined.

YutakaKodama; HeihachiSato

1996-01-01T23:59:59.000Z

418

The evidence of cathodic micro-discharges during plasma electrolytic oxidation process  

SciTech Connect

Plasma electrolytic oxidation (PEO) processing of EV31 magnesium alloy has been carried out in fluoride containing electrolyte under bipolar pulse current regime. Unusual PEO cathodic micro-discharges have been observed and investigated. It is shown that the cathodic micro-discharges exhibit a collective intermittent behavior, which is discussed in terms of charge accumulations at the layer/electrolyte and layer/metal interfaces. Optical emission spectroscopy is used to determine the electron density (typ. 10{sup 15}?cm{sup ?3}) and the electron temperature (typ. 7500?K) while the role of F{sup ?} anions on the appearance of cathodic micro-discharges is pointed out.

Nomin, A., E-mail: alexandre.nomine@univ-lorraine.fr [Institut Jean Lamour, UMR 7198 CNRS, Universit de Lorraine, Parc de Saurupt, 54011 Nancy (France); National Institute of Science and Technology MISiS, 4, Leninskij Prospekt, Moscow 119049 (Russian Federation); Martin, J.; Nol, C.; Henrion, G.; Belmonte, T. [Institut Jean Lamour, UMR 7198 CNRS, Universit de Lorraine, Parc de Saurupt, 54011 Nancy (France); Bardin, I. V.; Kovalev, V. L.; Rakoch, A. G. [National Institute of Science and Technology MISiS, 4, Leninskij Prospekt, Moscow 119049 (Russian Federation)

2014-02-24T23:59:59.000Z

419

Plutonium discharges to the sanitary sewer: Health impacts at the Livermore Water Reclamation Plant  

SciTech Connect

The Lawrence Livermore National Laboratory (LLNL) is the largest discharger of sewage treated by the Livermore Water Reclamation (LWRP), contributing approximately 7% by volume of the LWRP influent LILNL operations, as potential sources both of industrial pollutants and radioactivity, are therefore of particular concern to the LWRP. For this reason, LLNL has maintained vigorous wastewater discharge control and monitoring programs. In particular, the monitoring program has demonstrated that, except in a few rare instances, the concentration of contaminants in LLNL effluent have always remained below the appropriate regulatory standards. The exceptions have generally been due to inadvertent discharges of metals-bearing solutions produced by metal plating or cleaning operations.

Balke, B.K.

1993-04-16T23:59:59.000Z

420

Evaluation of structural issues related to isolation of the 100-KE/100-KW discharge chute  

SciTech Connect

The issue of excessive post-seismic leakage in the discharge chute of the K East and K West fuel storage basins was resolved by designing isolation barriers to maintain basin water levels if the discharge chute should drain. This report addresses the structural issues associated with isolation of the discharge chute. The report demonstrates the structural adequacy of the components associated with chute isolation for normal and seismic loading. Associated issues, such as hardware drop accidents and seismic slosh heights are also addressed.

Winkel, B.V.; Hyde, L.L.

1995-03-10T23:59:59.000Z

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


421

Synthesis of colloidal CuInSe2 nanoparticles by electrical spark discharge in liquid  

Science Journals Connector (OSTI)

This work presents a low-cost, non-vacuum, and facile process for fabrication of CuInSe2 (CIS) nanoparticles using electrical discharge treatment of mixture of copper, indium, and selenium powders between two tu...

Mehdi Mardanian; Alena A. Nevar; Michael Nedelko

2013-10-01T23:59:59.000Z

422

Microplasma Discharges in High Pressure Gases Scaling Towards the Sub-micron Regime  

E-Print Network (OSTI)

Atmospheric pressure microplasmas are uniquely characterized by their very high energy densities and also by their small discharge sizes. These properties allow for unique applications in plasma processing technologies. We have investigated...

Chitre, Aditya Rajeev

2012-02-14T23:59:59.000Z

423

The design and testing of a procedure to locate fresh submarine groundwater discharge in Cyprus  

E-Print Network (OSTI)

The aim of this collaborative project between Massachusetts Institute of Technology (MIT) and Cyprus Institute was to develop an experimental procedure for identifying fresh submarine groundwater discharge (SGD) in Cyprus. ...

Olesnavage, Kathryn M

2012-01-01T23:59:59.000Z

424

CF2 Production by CF4 Electron Impact Dissociation in Gas Discharge  

Science Journals Connector (OSTI)

At present neither of available sets of CF4 electron scattering cross sections does enable one to interpret satisfactory the CF4 dissociation in discharge plasma. We have undertook the investigation directed to d...

V. V. Ivanov; K. S. Klopovskiy; D. V. Lopaev

1999-01-01T23:59:59.000Z

425

A radiocarbon method and multi-tracer approach to quantifying groundwater discharge to coastal waters  

E-Print Network (OSTI)

Groundwater discharge into estuaries and the coastal ocean is an important mechanism for the transport of dissolved chemical species to coastal waters. Because many dissolved species are present in groundwater in concentrations ...

Gramling, Carolyn M

2003-01-01T23:59:59.000Z

426

Diagnosis of an atmospheric pressure plasma jet using a single dielectric barrier discharge  

Science Journals Connector (OSTI)

An optical investigation is presented for a plasma jet device with utilizes a discharge mechanism between a bare metal electrode and a dielectric barrier on a ground electrode. The length of the plasma plume i...

Y. H. Lee; C. S. Ha; H-J. Lee; H. J. Lee

2012-03-01T23:59:59.000Z

427

Development of Atmospheric Pressure Low Temperature Surface Discharge Plasma Torch and Application to Polypropylene Surface Treatment  

Science Journals Connector (OSTI)

We have finally succeeded in producing the plasma jet by use of the surface discharge plasma torch that can be expected to make larger the diameter of torch in the comparatively easy way. It can be checked tha...

Atsushi Kuwabara; Shin-ichi Kuroda

2008-04-01T23:59:59.000Z

428

Numerical simulation of the interaction of atmospheric pressure plasma discharges with dielectric surfaces.  

E-Print Network (OSTI)

??In this Ph.D. thesis, we have carried out 2D numerical simulations to study the influence of dielectric surfaces on the propagation dynamics of plasma discharges (more)

Pechereau, Franois

2013-01-01T23:59:59.000Z

429

Electrical Features of Radio-frequency, Atmospheric-pressure, Bare-metallic-electrode Glow Discharges  

Science Journals Connector (OSTI)

Radio-frequency (RF), atmospheric-pressure glow discharge (APGD) plasmas with bare metallic electrodes have promising prospects in the fields of plasma-aided etching, deposition, disinfection and sterilization, ....

He-Ping Li; Wen-Ting Sun; Hua-Bo Wang; Guo Li

2007-10-01T23:59:59.000Z

430

Negative ion-containing plasma in parallel-plate radio-frequency discharge in oxygen  

Science Journals Connector (OSTI)

The properties of a plasma in a parallel-plate radio frequency (rf) symmetric discharge of 13.56 MHz in oxygen have been investigated. The plasma contains negative ions. The temperature and density ... .6 eV, dep...

H. Amemiva; N. Yasuda; M. Endou

1994-09-01T23:59:59.000Z

431

Numerical investigation of pulse-modulated atmospheric radio frequency discharges in helium under different duty cycles  

SciTech Connect

Experiments observed that the pulse duty cycle has effects on the plasma homogeneity in pulse-modulated radio frequency (rf) discharges. In this paper, pulse-modulated rf (13.56 MHz) helium discharges are theoretically investigated using a two dimensional fluid model. With the pulse period being fixed to 15 {mu}s, it is found that when the pulse-on duration is over 4 {mu}s, i.e., the duty cycle is larger than approximately 27%, the discharge transits from an inhomogeneous to a homogeneous mode in every specific part of each pulse cycle under currently-used simulation parameters. More quantitative analysis shows that the discharge becomes more homogeneous as the duty cycle is increased but does not reach complete homogeneity. Possible reasons for the homogeneity improvement are discussed.

Sun Jizhong; Ding Zhengfen; Li Xuechun; Wang Dezhen [School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China); Wang Qi [Dalian Institute of Semiconductor Technology, School of Electronics Science and Technology, Dalian University of Technology, Dalian 116023 (China)

2011-12-15T23:59:59.000Z

432

A multibeam radio-frequency ion source with a discharge chamber inside a resonator  

Science Journals Connector (OSTI)

The design of a multibeam ion source with a discharge chamber inside a half-wavelength radio-frequency (RF) resonator with a spiral load ... resonator. The RF oscillator operating at a frequency of 38 MHz is grou...

B. Yu. Bogdanovich; V. P. Zubovskii

2008-09-01T23:59:59.000Z

433

PICMCC Simulations of Capacitive High-Frequency Discharge Dynamics with Nanoparticles  

Science Journals Connector (OSTI)

A new combined particle-in-cell Monte Carlo collision (PICMCC) approach is discussed for accurate and fast simulation of a radio-frequency (rf) discharge at a low gas pressure and high plasma density. Test calcu...

Irina V. Schweigert

2010-01-01T23:59:59.000Z

434

Frequency dependence of microparticle charge in a radio frequency discharge with Margenau electron velocity distribution  

SciTech Connect

rf discharges are widely used in complex plasma experiments. In this paper, we theoretically investigate the dependence of the particle floating potential on the discharge frequency, assuming the model Margenau expression for the electron velocity distribution function. In doing so we use the orbital motion limited cross section to calculate the electron flux to the particle and collision enhanced collection approximation for the ion flux to the particle. The floating potential is then obtained from the flux balance condition. It is shown that for typical plasma conditions in laboratory rf discharges, normalized floating potential grows with increase of the discharge frequency in collisionless regime and decreases in weakly collisional regime. However, variations in the floating potential are usually small when plasma parameters do not depend on the rf frequency.

Du, Cheng-Ran; Khrapak, Sergey A.; Antonova, Tetyana; Steffes, Bernd; Thomas, Hubertus M.; Morfill, Gregor E. [Max Plank Institute for Extraterrestrial Physics, Garching 85741 (Germany)

2011-01-15T23:59:59.000Z

435

Antistatic effect of atmospheric pressure glow discharge cold plasma treatment on textile substrates  

Science Journals Connector (OSTI)

Hydrophobic synthetic textile substrates, nylon and polyester fabrics, were continuously treated in an atmospheric-pressure-glow-discharge-cold-plasma reactor using He and air. The samples ... charge decay time. ...

Kartick Kumar Samanta; Manjeet Jassal; Ashwini K. Agrawal

2010-06-01T23:59:59.000Z

436

Argon and neon plasma columns in continuous surface wave microwave discharge at atmospheric pressure  

Science Journals Connector (OSTI)

In this paper the results of experimental investigations of a surface wave sustained discharge during continuous mode of operation are given. The surfaguide based microwave plasma torch operated at frequency of 2...

D. Czylkowski; M. Jasi?ski; J. Mizeraczyk; Z. Zakrzewski

2006-10-01T23:59:59.000Z

437

Influence of Discharge Atmosphere on the Ageing Behaviour of Plasma-Treated Polylactic Acid  

Science Journals Connector (OSTI)

The effect of a plasma treatment on polymers is not permanent, since ... . This paper investigates the influence of discharge atmosphere on the ageing behaviour of plasma-treated PLA foils: these foils are plasma

R. Morent; N. De Geyter; M. Trentesaux

2010-08-01T23:59:59.000Z

438

Optimization of NH3 Decomposition by Control of Discharge Mode in a Rotating Arc  

Science Journals Connector (OSTI)

In this study, the characteristic behavior of a rotating arc was investigated. Various modes, depending on the electric power supplied, can be observed in a rotating arc. Each mode produces different discharge ch...

Dae Hoon Lee; Kwan-Tae Kim; Hee Seok Kang

2014-01-01T23:59:59.000Z

439

Ethanol and E85 Reforming Assisted by a Non-thermal Arc Discharge  

Science Journals Connector (OSTI)

Ethanol and E85 Reforming Assisted by a Non-thermal Arc Discharge ... The input electric power is expressed in terms of the percentage of QfuelLHVfuel, and is noted as %LHV. ... for electricity prodn. ...

Guillaume Petitpas; Jos Gonzalez-Aguilar; Adeline Darmon; Laurent Fulcheri

2010-03-25T23:59:59.000Z

440

Parameters of free-burning arc discharge plasma in air with silver-based electrodes  

Science Journals Connector (OSTI)

We have used optical spectroscopy to study the radial temperature profiles for an electric arc plasma between silver electrodes and electrodes made ... . We established that the parameters of the arc discharge pl...

I. L. Babich; A. N. Veklich; L. A. Kryachko

2006-05-01T23:59:59.000Z

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


441

A cascaded photonic crystal fiber MachZehnder interferometer formed by extra electric arc discharges  

Science Journals Connector (OSTI)

In this paper, a cascaded MachZehnder interferometer based on a photonic crystal fiber is reported. It is demonstrated that by applying a small dose of extra arc discharge to the photonic crystal fiber sensin...

Y. Geng; X. Li; X. Tan; Y. Deng; Y. Yu

2011-03-01T23:59:59.000Z

442

Two-dimensional kinetic model of short high-current vacuum-arc discharge  

Science Journals Connector (OSTI)

A two-dimensional mathematical model of a short high-current vacuum-arc discharge is developed, according to which magnetized electrons ... a free flight regime in a two-dimensional electric field. The proposed m...

Ya. I. Londer; K. N. Ulyanov

2010-03-01T23:59:59.000Z

443

Dependence of thermal destabilization of electric-arc plasma in an air flow on discharge conditions  

Science Journals Connector (OSTI)

The effect of the conditions of electric-arc burning in an air flow on the ... processes in the development of instability in an arc-discharge column is shown.

V. N. Borisyuk; S. V. Goncharik

1997-03-01T23:59:59.000Z

444

Self-discharge study of Li-alloy/FeS sub 2 thermal cells  

SciTech Connect

The capacities of Li-alloy/FeS{sub 2}thermal batteries are influenced by the extent of self-discharge reactions that occur during operation. For some thermal-battery applications involving open-circuit (i.e., wet-stand'') conditions, this self-discharge can result in a significant loss incapacity. A study was undertaken to obtain a better understanding of the factors influencing the self-discharge of thermal cells, such as temperature, electrolyte composition, and processing of the catholyte (i.e., lithiation and fusion). The cells were discharged after prescribed times at open circuit under isothermal conditions and the capacity to a cutoff voltage was measured. Postmortem characterization of the cells was used to correlate the results of the electrochemical experiments. 4 refs., 8 figs., 1 tab.

Guidotti, R.A.; Reinhardt, F.W. (Sandia National Labs., Albuquerque, NM (USA)); Smaga, J.A. (Argonne National Lab., IL (USA))

1990-01-01T23:59:59.000Z

445

767JUNE 2003AMERICAN METEOROLOGICAL SOCIETY | ositive lightning discharges (flashes) are defined  

E-Print Network (OSTI)

767JUNE 2003AMERICAN METEOROLOGICAL SOCIETY | P ositive lightning discharges (flashes) are defined (flashes) that transfer to ground both positive and negative charges are termed bipolar lightning common than positive lightning. Currently available observations of bipolar lightning flashes, which can

Florida, University of

446

Effect of SRI methods on water use, NPS pollution discharge, and GHG emission in Korean trials  

Science Journals Connector (OSTI)

A field experiment with a locally-bred Japonica rice cultivar was conducted in 2011 to measure the effect of paddy irrigation management in Korea on rice yield, water use, NPS pollution discharge, and greenhouse ...

Joongdae Choi; Gunyeob Kim; Woonji Park; Minhwan Shin

2014-03-01T23:59:59.000Z

447

Hormonal control of sex differences in the electric organ discharge (EOD) of mormyrid fishes  

Science Journals Connector (OSTI)

Field studies have demonstrated that several species of mormyrid fish from Gabon, West Africa have a sex difference in the pulse-like waveform of their Electric Organ Discharge (EOD). Administration of androgen h...

Andrew H. Bass; Carl D. Hopkins

1985-01-01T23:59:59.000Z

448

Phase and amplitude maps of the electric organ discharge of the weakly electric fish, Apteronotus leptorhynchus  

Science Journals Connector (OSTI)

The electric organ discharge (EOD) potential was mapped on the skin and...Apteronotus leptorhynchus. The frequency components of the EOD on the surface of the fish have ... where the potential is always zero. The...

B. Rasnow; C. Assad; J. M. Bower

1993-05-01T23:59:59.000Z

449

Emergence and development of the electric organ discharge in the mormyrid fish,Pollimyrus isidori  

Science Journals Connector (OSTI)

The paper describes the first part of a longitudinal study of the development of electric organ discharge (EOD) in the mormyrid fishPollimyrus isidori.... Laboratory bred larvae were continuously monitored for EOD

G. W. Max Westby; Frank Kirschbaum

1977-01-01T23:59:59.000Z

450

Manufacturing and performance of ceramic/metal matrix composite electrical discharge machining electrodes.  

E-Print Network (OSTI)

??The manufacturing and performance of ceramic/metal matrix composite (cermet) electrical discharge machining (EDM) electrodes have been investigated. The processing techniques necessary for creating TiB2/Cu, TaC/Cu, (more)

Kim, Eugene Ty

2012-01-01T23:59:59.000Z

451

Environmental and Economic Assessment of Discharges from Gulf of Mexico Region Oil and Gas Operations  

SciTech Connect

The primary objectives of the project are to increase the base of scientific knowledge concerning (1) the fate and environmental effects of organics, trace metals, and NORM in water, sediment, and biota near several offshore oil and gas facilities; (2) the characteristics of produced water and produced sand discharges as they pertain to organics, trace metals, and NORM variably found in association with the discharges; (3) the recovery of three terminated produced water discharge sites located in wetland and high-energy open bay sites of coastal Louisiana; (4) the economic and energy supply impacts of existing and anticipated federal and state offshore and coastal discharge regulations; and (5) the catch, consumption and human use patterns of seafood species collected from coastal and offshore waters. The products of the effort will be a series of technical reports detailing the study procedures, results, and conclusions which contribute to the transfer of technology to the scientific community, petroleum industry, and state and federal agencies.

Gettleson, David A

1999-10-28T23:59:59.000Z

452

Continuous optical discharge in a thermionic converter for conversion of laser radiation energy into electrical energy  

Science Journals Connector (OSTI)

A model is developed and calculations are made of the characteristics of a continuous optical discharge in the interelectrode gap of a thermionic converter for conversion of laser radiation energy into electrical

I. V. Alekseeva; A. P. Budnik; V. A. Zherebtsov

1999-04-01T23:59:59.000Z

453

Gas-confined barrier discharges: a simplified model for plasma dynamics in flame environments  

E-Print Network (OSTI)

In this paper we evaluate the dynamics of non-thermal plasmas developing in extremely non-homogeneous environments. We present the gas-confined barrier discharge (GBD) concept and justify its importance as a first step to ...

Guerra-Garcia, Carmen

454

E-Print Network 3.0 - advanced tokamak discharges Sample Search...  

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

Fusion 3 03012006 09:51 AMLoading "People's Daily Online --Chinese experimental thermonuclear reactor on discharge test in July" Page 1 of 1http:english.people.com.cn200603...

455

High-voltage pulsed discharge in an electron source with a plasma cathode  

Science Journals Connector (OSTI)

The nature of and mechanism for producing a high-voltage discharge in an electron source with a plasma cathode are investigated. The possibility of generating pulsed electron currents with an amplitude of 103104

S. P. Bugaev; F. Ya. Zagulov

1973-10-01T23:59:59.000Z

456

Ion energy cost in a combined inductive-capacitive rf discharge  

Science Journals Connector (OSTI)

Experimental measurements were made of the ion energy cost ? as a function of the parameters of a combined rf inductive-capacitive discharge at low pressures (p<10?2 Torr). It was established that ?...does not de...

S. V. Dudin; A. V. Zykov; K. I. Polozhii; V. I. Farenik

1998-11-01T23:59:59.000Z

457

Utah. Code. Ann. 19-5-115: Spills or discharges of oil or...  

Open Energy Info (EERE)

Utah. Code. Ann. 19-5-115: Spills or discharges of oil or other substance Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- StatuteStatute:...

458

Optimization of compost fermentation of glycerol by-product discharged from biodiesel fuel production process  

Science Journals Connector (OSTI)

Development of a cheap system for reuse of glycerol by-product discharged from the biodiesel fuel (BDF) production process is needed in parallel with development of ... in the compost. Finally, a material cost evaluation

Yuta Sadano; Ryota Toshimitsu; Jiro Kohda

2010-11-01T23:59:59.000Z

459

Three Stages Modeling of n-Octane Reforming Assisted by a Nonthermal Arc Discharge  

Science Journals Connector (OSTI)

Three Stages Modeling of n-Octane Reforming Assisted by a Nonthermal Arc Discharge ... After a description of the model and its main assumptions, a parametric analysis of plasma reformer performance addressing the influence of plasma volume, H2O/C ratio, O/C ratio, and input electric power is presented. ... Most of them were particularly dealt with technologies based on arc discharges. ...

Jos Gonzalez-Aguilar; Guillaume Petitpas; Alexandre Lebouvier; Jean-Damien Rollier; Adeline Darmon; Laurent Fulcheri

2009-09-08T23:59:59.000Z

460

Vacuum arc ignition by penning discharge in a strong magnetic field  

SciTech Connect

Vacuum arc with cathode spots on the cold electrode is widely used as a plasma generator in a such kind of devices like metal ion sources, plasma cathode electron guns, thing films deposition facilities and others. Most vacuum arc devices utilize a high voltage discharge across an insulator surface to provide a trigger plasma which in turn initiates the main arc discharge. Operation of vacuum arc in a repetitively pulsed mode required a stable triggering system for the long time. But with a discharge across the insulators the number of stable pulses is limited by 100,000 or little bit more. The better method for vacuum arc ignition is low pressure discharge. As shown in this paper it is possible to increase the lifetime of the ignition system in 10 times at least, but negative characteristic of this system is a relatively high pressure (about 0.1 mtorr). In some kinds of vacuum arc applications it is impermissible because it leads to the {open_quotes}contamination{close_quotes} of the metal plasma by the gaseous one. In order to decrease the background pressure, using the gas discharge ignition system for vacuum arc, Penning discharge is suggested. The main new feature of this system is an applying the strong magnetic field not only for stabilization of the cathode spot moving and for the rise the high charge states of ions in metal plasma, but also for the essential decrease the lowest point of the background gas pressure when the Penning discharge is still in a stable operation. Under the stable mode of Penning discharge there was always a stable vacuum arc ignition.

Nikolaev, A.G.; Schanin, P.M.; Yushkov, G.Yu. [High Current Electronics Inst., Tomsk (Russian Federation)] [and others

1995-12-31T23:59:59.000Z

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


461

Non-invasive optoelectronic system for measurement of electrostatic discharge (ESD) induced phenomena  

SciTech Connect

The design of a high speed optoelectronic system consisting of an electrically floating detector/transmitter module, coupled to a receiver by a fiber optic link, is described. Typical applications of this optical decoupled system, involving electrostatic discharge (ESD), are described. These include: the optical signature characterization of discharges, and the measurement of conducted and radiated electromagnetic interference (EMI) due to ESD. Results of experiments conducted to demonstrate the qualitative performance characteristics of the measurement system are presented.

Greason, W.D.; Kucerovsky, Z.; Bulach, S.; Flatley, M.W. [Univ. of Western Ontario, London, Ontario (Canada). Dept. of Electrical Engineering

1995-12-31T23:59:59.000Z

462

Evaluation of asbestos fibre content in discharge air from a portable canister vacuum cleaner  

E-Print Network (OSTI)

EVALUATION OF ASBESTOS FIBRE CONTENT IN DISCHARGE AIR FROM A PORTABLE CANISTER VACUUM CLEANER A Thesis by JAMES TURNER WILSON JR. Submitted to the Graduate College of Texas A/M University in partial fulfillment of the requirement... for the degree of MASTER OF SCIENCE May 1975 Major Subject: Industrial Hygiene EVALUATION OF ASBESTOS FIBRE CONTENT IN DISCHARGE AIR FROM A PORTABLE CANISTER VACUUM CLEANER A Thesis by JAMES TURNER WILSON JR. Approved as to style and content by...

Wilson, James Turner

2012-06-07T23:59:59.000Z

463

Instream biological assessment of NPDES point source discharges at the Savannah River Site, 1997-1998  

SciTech Connect

The Savannah River Site currently has 33 permitted NPDES outfalls that have been permitted by the South Carolina Department of Health an Environmental Control to discharge to SRS streams and the Savannah River. In order to determine the cumulative impacts of these discharges to the receiving streams, a study plan was developed to perform in-stream assessments of the fish assemblages, macroinvertebrate assemblages, and habitats of the receiving streams.

Specht, W.L.

2000-02-28T23:59:59.000Z

464

GRR/Elements/18-CA-c.1 to 18-CA-c.3 - Does the Project Discharge Waste to  

Open Energy Info (EERE)

GRR/Elements/18-CA-c.1 to 18-CA-c.3 - Does the Project Discharge Waste to GRR/Elements/18-CA-c.1 to 18-CA-c.3 - Does the Project Discharge Waste to Land in a Diffused Manner or Affect Groundwater Quality < GRR‎ | Elements Jump to: navigation, search GRR-logo.png GEOTHERMAL REGULATORY ROADMAP Roadmap Home Roadmap Help List of Sections 18-CA-c.1 to 18-CA-c.3 - Does the Project Discharge Waste to Land in a Diffused Manner or Affect Groundwater Quality If waste is discharged to land in a diffused manner, such as that it causes soil erosion or the discharge affects groundwater, the developer must file a Report of Waste Discharge application (Form 200) and the necessary supplemental information with the appropriate Regional Water Quality Control Board (RWQCB) at least 120 days before beginning to discharge waste. Logic Chain No Parents

465

Elimination of liquid discharge to the environment from the TA-50 Radioactive Liquid Waste Treatment Facility  

SciTech Connect

Alternatives were evaluated for management of treated radioactive liquid waste from the radioactive liquid waste treatment facility (RLWTF) at Los Alamos National Laboratory. The alternatives included continued discharge into Mortandad Canyon, diversion to the sanitary wastewater treatment facility and discharge of its effluent to Sandia Canyon or Canada del Buey, and zero liquid discharge. Implementation of a zero liquid discharge system is recommended in addition to two phases of upgrades currently under way. Three additional phases of upgrades to the present radioactive liquid waste system are proposed to accomplish zero liquid discharge. The first phase involves minimization of liquid waste generation, along with improved characterization and monitoring of the remaining liquid waste. The second phase removes dissolved salts from the reverse osmosis concentrate stream to yield a higher effluent quality. In the final phase, the high-quality effluent is reused for industrial purposes within the Laboratory or evaporated. Completion of these three phases will result in zero discharge of treated radioactive liquid wastewater from the RLWTF.

Moss, D.; Williams, N.; Hall, D.; Hargis, K.; Saladen, M.; Sanders, M.; Voit, S.; Worland, P.; Yarbro, S.

1998-06-01T23:59:59.000Z

466

Mechanisms of deflagration-to-detonation transition under initiation by high-voltage nanosecond discharges  

SciTech Connect

An experimental study of detonation initiation in a stoichiometric propane-oxygen mixture by a high-voltage nanosecond gas discharge was performed in a detonation tube with a single-cell discharge chamber. The discharge study performed in this geometry showed that three modes of discharge development were realized under the experimental conditions: a spark mode with high-temperature channel formation, a streamer mode with nonuniform gas excitation, and a transient mode. Under spark and transient initiation, simultaneous ignition inside the discharge channel occurred, forming a shock wave and leading to a conventional deflagration-to-detonation transition (DDT) via an adiabatic explosion. The DDT length and time at 1 bar of initial pressure in the square smooth tube with a 20-mm transverse size amounted to 50 mm and 50{mu}s, respectively. The streamer mode of discharge development at an initial pressure of 1 bar resulted in nonuniform mixture excitation and a successful DDT via a gradient mechanism, which was confirmed by high-speed time resolved ICCD imaging. The gradient mechanism implied a longer DDT time of 150{mu}s, a DDT run-up distance of 50 mm, and an initiation energy of 1 J, which is two orders of magnitude less than the direct initiation energy for a planar detonation under these conditions. (author)

Rakitin, Aleksandr E.; Starikovskii, Andrei Yu. [Physics of Nonequilibrium Systems Lab, Moscow Institute of Physics and Technology, 9 Institutski Lane, Dolgoprudny 141700 (Russian Federation)

2008-10-15T23:59:59.000Z

467

Drainage capture and discharge variations driven by glaciation in the Southern Alps, New Zealand  

SciTech Connect

Sediment flux in proglacial fluvial settings is primarily controlled by discharge, which usually varies predictably over a glacialinterglacial cycle. However, glaciers can flow against the topographic gradient to cross drainage divides, reshaping fluvial drainage networks and dramatically altering discharge. In turn, these variations in discharge will be recorded by proglacial stratigraphy. Glacial-drainage capture often occurs in alpine environments where ice caps straddle range divides, and more subtly where shallow drainage divides cross valley floors. We investigate discharge variations resulting from glacial-drainage capture over the past 40 k.y. for the adjacent Ashburton, Rangitata, and Rakaia basins in the Southern Alps, New Zealand. Although glacial-drainage capture has previously been inferred in the range, our numerical glacier model provides the first quantitative demonstration that this process drives larger variations in discharge for a longer duration than those that occur due to climate change alone. During the Last Glacial Maximum, the effective drainage area of the Ashburton catchment increased to 160% of the interglacial value with drainage capture, driving an increase in discharge exceeding that resulting from glacier recession. Glacial-drainage capture is distinct from traditional (base leveldriven) drainage capture and is often unrecognized in proglacial deposits, complicating interpretation of the sedimentary record of climate change.

Ann V. Rowan; Mitchell A. Plummer; Simon H. Brocklehurst; Merren A. Jones; David M. Schultz

2013-02-01T23:59:59.000Z

468

Enhanced Electron Attachment to Highly-Excited States of Molecules: Implications for Plasma Processing Discharges  

SciTech Connect

Recent studies show that large negative ion densities exist in plasma processing discharges, including those of weakly electronegative gases such as SiH{sub 4} and CF{sub 4}. Also, there is strong evidence that the negative ions could be the precursors for particulate formation in processing discharges. Even though it is now well established that large concentrations of negative ions exist in processing discharges, and that they play a crucial role in such discharges, the source of such high negative ion densities has not been clarified. In particular, gases like SiH{sub 4} and CH{sub 4}, which are commonly used in processing discharges, attach electrons only weakly in their ground electronic states (see the references). Due to the lack of an alternative mechanism, the origin of large negative ion densities in such weakly electronegative gases has been frequently attributed to electron attachment to radicals (molecular fragments) or other byproducts produced in the discharge. This hypothesis had not been tested in direct electron attachment measurements.

Datskos, P.G.; Ding, W.; McCorkle, D.L.; Pinnaduwage, L.A.

1998-06-29T23:59:59.000Z

469

Initiation of long, free-standing Z-discharges by CO2 laser gas heating  

SciTech Connect

High current discharge channels can neutralize both current and space charge of very intense ion beams. Therefore they are considered as an interesting alternative for the final focus and beam transport in a heavy ion beam fusion reactor. At the GSI accelerator facility, 50 cm long, stable, free-standing discharge channels with currents in excess of 40 kA in 2 to 25 mbar ammonia (NH{sub 3}) gas are investigated for heavy ion beam transport studies. The discharges are initiated by a CO{sub 2} laser pulse along the channel axis before the discharge is triggered. Resonant absorption of the laser, tuned to the {nu}{sub 2} vibration of the ammonia molecule, causes strong gas heating. Subsequent expansion and rarefaction of the gas prepare the conditions for a stable discharge to fulfill the requirements for ion beam transport. This paper describes the laser-gas interaction and the discharge initiation mechanism. We report on the channel stability and evolution, measured by fast shutter and streak imaging techniques. The rarefaction of the laser heated gas is studied by means of a hydrocode simulation.

Nieman, C.; Tauschwitz, A.; Penache, D.; Neff, S.; Knobloch, R.; Birkner, R.; Presura, R.; Hoffmann, D.H.H.; Yu, S.S.; Sharp, W.M.

2004-04-19T23:59:59.000Z

470

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

SciTech Connect

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.

Sukhinin, G. I.; Fedoseev, A. V. [Russian Academy of Sciences, Kutateladze Institute of Thermophysics, Siberian Branch (Russian Federation)

2007-12-15T23:59:59.000Z

471

Numerical simulation of discharge structures in Ar/Cs nonequilibrium plasma MHD generator  

SciTech Connect

As reported in previous papers, the quasi-one-dimensional simulation code has come to predict almost satisfactorily the performance of the shock tube driven disk MHD generator using cesium seeded argon plasma as working fluid. However, the agreement between experimental and predicted performances was not so good on the conditions that the external load resistance was small, the seed fraction was high or the stagnation pressure was low. On these conditions, it was observed that ionization instabilities occur in the MHD channel. On the other hand, high-speed photographs of the nonequilibrium plasma discharge in the MHD generator were taken on several working conditions during the experiment. From these photographs, discharges were classified into almost three kinds of patterns. (a) A single strong luminous ring-type discharge near the nozzle exit for low seed fraction, (b) an almost uniform discharge inside the MHD channel for medium seed fraction, (c) multiple ring-type or spiral discharges in the MHD channel for high seed fraction. The structures of the discharge were sometimes two-dimensional especially for high seed fraction. Therefore, it may be impossible in this case to simulate them and to predict the performance precisely with one-dimensional simulation code. In the present study, two-dimensional (r-q) numerical simulations were made on the disk MHD power generation experiment (thermal input is about 1.5MW). The objectives were to develop a numerical simulator with high accuracy for the disk MHD generator and to explain some interesting phenomena concerned with nonequilibrium plasma discharges. The system of basic equations was solved mainly using CIP method. The calculation region was taken as that located between the throat to the inlet of the second (final) cathode. The main results are summarized as follows; (A) On the condition that the seed fraction was lower than the optimum value, it was succeeded to simulate numerically the single strong luminous ring-type discharge. The ring-type discharge was caused by the partial ionization of argon due to the rapid increase in the electron temperature in the nozzle. The pressure increase like a shock wave was also induced there. (B) On the condition that the seed fraction was near the optimum value, an almost uniform plasma was obtained in the simulation and in the experiment. (C) On the condition that seed fraction was higher than the optimum value, A similar structure of discharge to experimental one was obtained in the calculation due to an ionization instability (streamer) caused by the partial ionization of seeded cesium. (D) The performances of the generator such as enthalpy extraction can be predicted well with this simulation code.

Okubo, M.; Kabashima, S.; Okuno, Y.; Yamasaki, H.

1998-07-01T23:59:59.000Z

472

Exposure and effects of oilfield brine discharges on western sandpipers (Calidris mauri) in Nueces Bay, Texas  

SciTech Connect

Discharge of oilfield brines into fresh and estuarine waters is a common disposal practice in Texas. Petroleum crude oil (PCO) extraction from underground stores includes the removal of a significant amount of water along with the oil. Several methods may be used to separate the oil and water fractions, including tank batteries, heat separation, and skimming ponds. Disposal of the resultant produced water (oilfield brine) may be accomplished by deep-well injection or discharge to surface waters. In Texas, an estimated 766,000 barrels of oilfield brine were discharged daily into tidal waters in 1979. The maximum concentration for oil and grease in these discharges permitted by the Texas Railroad Commission is 25 ppm. Several studies have shown that oilfield brines are toxic to a wide range of marine life, yet little is known about their effects on birds and mammals. Exposure to petroleum in oilfield wastes could evoke toxicological effects in some waterbird species. Avian responses to PCO exposure are highly variable, including cessation of growth, osmoregulatory impairment, endocrine dysfunction, hemolytic anemia, altered blood chemistry, cytochrome P450 induction, reduced reproductive success, and mortality. Oilfield brine discharges may soon be the largest and most pervasive source of contaminants entering Texas estuaries. Migratory and resident birds feeding in the vicinity of discharge sites may be ingesting food items contaminated with petroleum hydrocarbons, heavy metals and salts in sufficient quantities to evoke toxicity. The present study of wintering western sandpipers (Calidris mauri) that feed and roost near discharge sites sought to examine oilfield brine exposure and effects through quantification of contaminant burdens, morphological characteristics, and cytochrome P450-associated monooxygenase activities. 20 refs., 2 tabs.

Rattner, B.A.; Melancon, M.J. [National Biological Survey, Laurel, MD (United States); Capizzi, J.L. [Texas A& M Univ., College Station, TX (United States); King, K.A. [Fish and Wildlife Service, Phoenix, AZ (United States); LeCaptain, L.J. [Fish and Wildlife Service, Spokane, WA (United States)

1995-05-01T23:59:59.000Z

473

Geochemical and hydrogeologic evolution of alkaline discharges from abandoned coal mines  

SciTech Connect

Numerous large flow (> 2,000 l/min), historically (pre-1973) acidic, abandoned underground deep mine discharges in southwestern Pennsylvania are now alkaline in character, with circumneutral pH. Recently measured flow rates are consistent with those measured 25--30 years ago; thus the change in chemistry is not simply due to dilution by increased flows of uncontaminated water through the mines. It is likely that flooding of the mines has decreased the extent of acidity enhancing aerobic conditions, and that decades of weathering have reduced the amount of reactive pyrite. However, the mines continue to yield a sulfate-rich, Fe-contaminated (19--79 ppm) drainage. These highly alkaline discharges (up to 330 ppm as CaCO{sub 3}) are accompanied by large concentrations of sodium (up to 700 ppm) and suggest cation exchange with the associated overburden. To assess the hydrogeological conditions that result in the formation of alkaline Fe-contaminated mine discharges, the authors examined all the major discharges from a single synclinal basin. The northeast-trending Irwin synclinal coal basin encompasses 94 mi{sup 2} and was extensively mined by underground methods during the first half of this century. All major streams that arise within or cross the syncline are polluted by mine drainage that ranges from highly acidic Fe- and Al-contaminated discharges in the northern portion of the syncline to highly alkaline, iron and sulfate-contaminated discharges to the south. The hydrology of the basin is controlled by its southern plunging structure, by outcrops or drainage tunnels on the western arms of the syncline, and by several coal barriers. A first-order hydrogeologic model was constructed to evaluate ground water flow into and through the mine complexes found in the basin. The model integrates the basin geometry with structural and mine barrier components to determine groundwater flow paths and estimate residence time. Water quality is related to the cumulative proportion of up-gradient flooded and unflooded mine workings. Small discharges from unflooded, gravity-flow portions of the mined-out portion of the Pittsburgh Coal seam are highly acidic, and large artesian flows of water affected by only a short flow through flooded anoxic mine pools are moderately acidic. Those discharges subjected to increased residence time in flooded anoxic portions of the mines are increasingly alkaline. Refinement of this model could aid in prediction and hydrogeologic manipulation of these high flow Fe-contaminated discharges that are the main pollutant in many streams throughout Northern Appalachia and other coal mining areas throughout the world.

Winters, W.R.; Capo, R.C.; Wolinsky, M.A.; Weaver, T.J.; Hedin, R.S.

1999-07-01T23:59:59.000Z

474

Spectroscopic Diagnostics of Barrier Discharge Plasmas in Mixtures of Zinc Diiodide with Inert Gases  

SciTech Connect

The spectral characteristics of the emission of gas discharge atmospheric pressure plasmas in mixtures of zinc diiodide vapor with inert gases (He, Ne, Ar, Kr, and Xe) are investigated. The formation of a gas discharge plasma and the excitation of the components of a working mixture were performed in a high-frequency (with a repetition frequency of sinusoidal voltage pulses of 100 kHz) barrier discharge. The gas discharge emission was analyzed in the spectral range 200-900 nm with a resolution of 0.05 nm. Emission bands of ZnI(B-X) exciplex molecules and I*{sub 2} excimer molecules, lines of inert gases, and emission bands of XeI* exciplex molecules (in Xe-containing mixtures) were revealed. It is ascertained that the strongest emission of ZnI* molecules is observed in ZnI{sub 2}/He(Ne) mixtures. The regularities in the spectral characteristics of the gas discharge plasma emission are considered.

Guivan, N.N.; Malinin, A.N. [Uzhgorod National University, Uzhgorod, 88000 (Ukraine)

2005-11-15T23:59:59.000Z

475

Numerical study on microwave-sustained argon discharge under atmospheric pressure  

SciTech Connect

A numerical study on microwave sustained argon discharge under atmospheric pressure is reported in this paper. The purpose of this study is to investigate both the process and effects of the conditions of microwave-excited gas discharge under atmospheric pressure, thereby aiding improvements in the design of the discharge system, setting the appropriate working time, and controlling the operating conditions. A 3D model is presented, which includes the physical processes of electromagnetic wave propagation, electron transport, heavy species transport, gas flow, and heat transfer. The results can be obtained by means of the fluid approximation. The maxima of the electron density and gas temperature are 4.96??10{sup 18} m{sup ?3} and 2514.8?K, respectively, and the gas pressure remains almost unchanged for typical operating conditions with a gas flow rate of 20 l/min, microwave power of 1000 W, and initial temperature of 473?K. In addition, the conditions (microwave power, gas flow rate, and initial temperature) of discharge are varied to obtain deeper information about the electron density and gas temperature. The results of our numerical study are valid and clearly describe both the physical process and effects of the conditions of microwave-excited argon discharge.

Yang, Y.; Hua, W., E-mail: huaw@scu.edu.cn; Guo, S. Y. [School of Electronics and Information Engineering, Sichuan University, Chengdu 610065 (China)] [School of Electronics and Information Engineering, Sichuan University, Chengdu 610065 (China)

2014-04-15T23:59:59.000Z

476

Plasma performance and impurity behaviour in long pulse discharges on LHD  

Science Journals Connector (OSTI)

The superconducting machine LHD has conducted long pulse experiments for four years to achieve long-duration plasmas with high performance. The operational regime was largely extended in discharge duration and plasma density. In this paper, the plasma characteristics, in particular, plasma performance and impurity behaviour in long pulse discharges are described. Confinement studies show that global energy confinement times are comparable to those in short pulse discharges. Long sustainment of high performance plasma, which is equivalent to the previous achievement in other devices, was demonstrated. Long pulse discharges enabled us to investigate impurity behaviour in a long timescale. Intrinsic metallic impurity accumulation was observed in a narrow density window (23?1019m?3) only for hydrogen discharges. Impurity transport study by using active impurity pellet injection shows a long impurity confinement time and an inward convection in the impurity accumulation window, which is consistent with the intrinsic impurity behaviour. The pulsed neon gas injection experiment shows that the neon penetration into the plasma core is caused by the inward convection due to radial electric field. Finally, impurity accumulation control with an externally induced magnetic island at the plasma edge was demonstrated.

Y. Nakamura; Y. Takeiri; R. Kumazawa; M. Osakabe; T. Seki; B.J. Peterson; K. Ida; H. Funaba; M. Yokoyama; N. Tamura; A. Komori; S. Morita; K. Sato; K. Narihara; S. Inagaki; T. Tokuzawa; S. Masuzaki; J. Miyazawa; N. Noda; T. Mutoh; T. Shimozuma; K. Kawahata; Y. Oka; H. Suzuki; N. Ohyabu; T. Akiyama; N. Ashikawa; M. Emoto; P. Goncharov; M. Goto; H. Idei; K. Ikeda; S. Imagawa; M. Isobe; O. Kaneko; H. Kawazome; K. Khlopenkov; T. Kobuchi; A. Kostrioukov; S. Kubo; Y. Liang; T. Minami; T. Morisaki; S. Murakami; S. Muto; K. Nagaoka; Y. Nagayama; H. Nakanishi; Y. Narushima; K. Nishimura; T. Notake; H. Nozato; S. Ohdachi; S. Okamura; T. Ozaki; A. Sagara; T. Saida; K. Saito; S. Sakakibara; R. Sakamoto; M. Sasao; M. Sato; M. Shoji; N. Takeuchi; K. Tanaka; M.Y. Tanaka; K. Toi; Y. Torii; K. Tsumori; K.Y. Watanabe; T. Watari; Y. Xu; H. Yamada; I. Yamada; S. Yamamoto; T. Yamamoto; S. Yoshimura; Y. Yoshimura; M. Yoshinuma; K. Itoh; T. Mito; K. Ohkubo; I. Ohtake; T. Satow; S. Sudo; T. Uda; K. Yamazaki; K. Matsuoka; O. Motojima; Y. Hamada; M. Fujiwara

2003-01-01T23:59:59.000Z

477

A MODULAR STEADY STATE GLOW DISCHARGE QUADRUPOLE MASS SPECTROMETER SYSTEM FOR THE AT-LINE ANALYSIS OF PLUTONIUM METAL  

SciTech Connect

Historically, glow discharge mass and optical spectrometric techniques have been used in industry for the characterization of processed metals, such as steels and other alloys. This technique is especially well suited for this type of product analysis because the glow discharge ionization source accommodates solid conducting samples with minimal or no sample preparation. This characteristic along with minimal matrix effect considerations makes the glow discharge source well suited for these types of applications.

R. STEINER; D. WAYNE

1998-12-01T23:59:59.000Z

478

A Catalyst Wire-feed Arc Discharge for Synthesis of Carbon Nanotubes and  

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

A Catalyst Wire-feed Arc Discharge for Synthesis of Carbon Nanotubes and A Catalyst Wire-feed Arc Discharge for Synthesis of Carbon Nanotubes and Graphene Particles This invention pertains to a highly effective arc-based synthesis of single wall carbon nanotubes and graphene particles using catalysts in the form of wires made from ion group alloys instead of commonly used catalyst powders. The catalyst wire can be introduced into the discharge either from the anode or cathode regions or into the inter-electrode gap. The catalyst introduction can be done automatically and controlled using feedback based on the ablation of the graphite electrode. To maintain simplicity and attractiveness for industrial applications, it is desirable that the catalyst composition be contained in a single wire alloy. No.: M-808 Inventor(s): Yevgeny Raitses

479

Biological purification of water by an ozoniser with a discharge tube electrode  

Science Journals Connector (OSTI)

An efficient apparatus with an internal discharge tube electrode has been developed and tested for the biological purification of water. Ultra-pure water can thus be obtained for the semiconductor, pharmaceutical and foodstuff industries. The purification is achieved by means of the combined effect of ozone and UV radiation. The silent discharge ozoniser consists of an internal discharge tube filled with Ar and Hg vapours as the inner electrode and concentric silica glass and cooling water as the outer electrode. The power consumption of this new type of ozoniser is 11.5 W h/gO3 and 7.0 W h/gO3 for the generation of 1% ozone concentration from dry air and oxygen, respectively.

J Drimal; J Janca

1990-01-01T23:59:59.000Z

480

Absolute atomic oxygen density profiles in the discharge core of a microscale atmospheric pressure plasma jet  

Science Journals Connector (OSTI)

The micro atmospheric pressure plasma jet is an rf driven (13.56 MHz ? 20 ? W ) capacitively coupled discharge producing a homogeneous plasma at ambient pressure when fed with a gas flow of helium (1.4 slm) containing small admixtures of oxygen ( ? 0.5 % ) . The design provides excellent optical access to the plasma core. Ground state atomic oxygen densities up to 3 10 16 ? cm ? 3 are measured spatially resolved in the discharge core by absolutely calibrated two-photon absorption laser-induced fluorescence spectroscopy. The atomic oxygen density builds up over the first 8 mm of the discharge channel before saturating at a maximum level. The absolute value increases linearly with applied power.

Nikolas Knake; Kari Niemi; Stephan Reuter; Volker Schulz-von der Gathen; Jrg Winter

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "high-intensity discharge hid" from the National Library of EnergyBeta (NLEBeta).
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to obtain the most current and comprehensive results.


481

Numerical simulation of narrow bipolar electromagnetic pulses generated by thunderstorm discharges  

SciTech Connect

Using the concept of avalanche relativistic runaway electrons (REs), we perform numerical simulations of compact intracloud discharge (CID) as a generator of powerful natural electromagnetic pulses (EMPs) in the HF-VHF range, called narrow bipolar pulses (NBPs). For several values of the field overvoltage and altitude at which the discharge develops, the numbers of seed electrons initiating the avalanche are evaluated, with which the calculated EMP characteristics are consistent with the measured NBP parameters. We note shortcomings in the hypothesis assuming participation of cosmic ray air showers in avalanche initiation. The discharge capable of generating NBPs produces REs in numbers close to those in the source of terrestrial {gamma}-ray flashes (TGFs), which can be an argument in favor of a unified NBP and TGF source.

Bochkov, E. I.; Babich, L. P., E-mail: babich@elph.vniief.ru; Kutsyk, I. M. [All-Russia Research Institute of Experimental Physics, Russian Federal Nuclear Center (Russian Federation)] [All-Russia Research Institute of Experimental Physics, Russian Federal Nuclear Center (Russian Federation)

2013-07-15T23:59:59.000Z

482

Ion-molecule reactions and ion energies in a CF4 discharge  

Science Journals Connector (OSTI)

Absolute cross sections have been measured for reactants typically found in carbon tetrafluoride (CF4) discharges for collision energies below a few hundred electron volts. The reactions investigated include collision-induced dissociation and dissociative electron transfer reactions for CF3+ and F+ colliding with CF4, and collisional electron detachment for F- colliding with CF4. Also presented are measurements of energies and relative intensities of ions generated in dc Townsend CF4 discharges with E/N values ranging from 410-18?V m2 to 2510-18?V m2 [4 to 25 kTd]. Ion energy and ion intensity data for the Townsend discharges are analyzed in light of the measured cross sections.

B. L. Peko; I. V. Dyakov; R. L. Champion; M. V. V. S. Rao; J. K. Olthoff

1999-12-01T23:59:59.000Z

483

Particle-in-cell simulation of hydrogen discharge driven by combined radio frequency and pulse sources  

SciTech Connect

A particle-in-cell plus Monte Carlo collision model is employed to investigate the low pressure hydrogen capacitive discharge driven by combined radio frequency (rf) and pulse sources. This work focuses on the evolutions of electron energy and density in the discharge to illustrate the role that a short pulse source plays. The simulation results show that an extra short pulse source can modulate the electron energy effectively: in the early and late pulse-on times, the electron energy is much higher than that in the single rf source discharge; during the pulse-off time, the electron energy can drop gradually to a low value. It is also found that a few peaks of attenuated electron energy appear periodically just after the pulse voltage drops to zero. The similar phenomena can also be found in the production rate of highly vibrationally excited hydrogen molecules. Physical mechanisms responsible for these phenomena are discussed.

Sun Jizhong; Li Xiantao; Sang Chaofeng; Jiang Wei; Zhang Pengyun; Wang Dezhen [School of Physics and Optoelectronic Engineering and College of Advanced Science and Technology, Dalian University of Technology, Dalian 116024 (China)

2010-10-15T23:59:59.000Z

484

Dynamic model of the radio-frequency plasma sheath in a highly asymmetric discharge cell  

Science Journals Connector (OSTI)

A self-consistent fluid model for the radio-frequency sheath at the powered electrode of a highly asymmetric discharge cell is developed and solved. The model assumes time-independent ion motion and inertialess electrons. The voltage on the powered electrode, assumed to be sinusoidal, is shared between the powered sheath and a series resistance that represents the remainder of the discharge. The model includes ion collisions, sheath conduction currents, and secondary electron emission from the electrode surface. Model results are compared with previous sheath models and with experiment. Current wave forms predicted by the model closely resemble the nonsinusoidal current wave forms measured in highly asymmetric cells. The model accurately predicts the shape of sheath voltage wave forms, but not their dc components. The magnitudes and phases of sheath impedances predicted by the model agree with experimental measurements performed in argon discharges at pressures of 4.0133 Pa.

M. A. Sobolewski

1997-07-01T23:59:59.000Z

485

Studies on erosion of silicone rubber exposed to partial arc discharges  

Science Journals Connector (OSTI)

The effect of electrolyte conductivity on the partial arc discharge development between two electrolyte electrodes on a silicone rubber sheet surface was investigated. Tests were executed by placing the salt-waterlogged glass-filter paper on a silicone rubber sheet to simulate a polluted electrolyte layer, and partial arc discharges with a constant current value of 10mA were observed. It was found that the formation of an arc channel and a temperature distribution on the sample surface varied with the electrolyte conductivity. In addition, the relation between the electrolyte conductivity and the weight loss due to the heat erosion of specimens was also investigated by a 3D morphological observation and a simulated calculation. The partial arc discharge did significantly not influence on the sample surface erosion under serious polluted conditions. In contrast, the severest erosion appeared under the light pollution with comparatively lower conductivity of the electrolyte electrodes.

Kenichi Haji; Yong Zhu; Masahisa Otsubo; Tatsuya Sakoda

2008-01-01T23:59:59.000Z

486

Estimation of electron temperature in transient glow discharge using ionization wave  

SciTech Connect

Through ionization waves (striation), the transition of glow discharge to arc discharge was observed and relevant electron temperatures were determined experimentally. The velocity of ionization waves in a cathode flare increased from twofold to threefold that in an anode flare. It was assumed that the electron temperature of an anode flare was 4.0-fold to 8.4-fold higher than that in a dark space, and the typical electron temperatures in a dark space and an anode flare were 1.8x10{sup 3} and 1.0x10{sup 4} K, respectively. The electron temperature of the anode flare agreed well with the theoretical value of a positive column in steady glow discharge.0.

Hoshi, Y.; Yokota, A.; Yoshida, H.; Akedo, J. [National Institute of Advanced Industrial Science and Technology, AIST Tsukuba East, Tsukuba, Ibaraki 305-8564 (Japan)

2006-07-01T23:59:59.000Z

487

Effects of the roughness characteristics on the wire tool surface for the electrical discharge machining properties  

SciTech Connect

Wire electrical discharge machining (WEDM) has been investigated to obtain the better discharge machining properties of the removal rate and the surface roughness in a few decades. Recently, it revealed that the rough tool electrodes can improve the WEDM properties for some sort of materials. In this study, the rough wire electrodes using a wet blasting method was developed and evaluated the machining performance for the insulated Si{sub 3}N{sub 4} in the WEDM processes. As the results, it could not recognize the advantage of roughness wire electrode under the high-energy condition, but it found that the electro-conductive layer thickness became thinner in comparison with those of normal wires. On the contrary, it could be obtained the better surface roughness in the low energy condition. It was supposed that the roughed wire surface generates the homogeneous dispersion discharges on the workpiece.

Fukuzawa, Yasushi; Yamashita, Masahide; Mamuro, Hiroaki; Yamashita, Ken [Nagaoka University of Technology, Department of Mechanical Engineering, 1603-1 Kamitomioka-machi, Nagaoka, Niigata, 940-2188 (Japan); Ogata, Masayoshi [Macoho Co., Ltd. 525 Kanawa, Isurugi-machi, Nagaoka, Niigata 940-2032 JAPAN (Japan)

2011-01-17T23:59:59.000Z

488

Transition from Townsend to glow discharge: Subcritical, mixed, or supercritical characteristics  

Science Journals Connector (OSTI)

The transition from Townsend to glow discharge is investigated numerically in one space dimension in full parameter space within the classical model: with electrons and positive ions drifting in the local electric field, impact ionization by electrons (? process), secondary electron emission from the cathode (? process) and space charge effects. We also perform a systematic analytical small current expansion about the Townsend limit up to third order in the current that fits our numerical data very well. Depending on the two determining parameters ? and system size pd, the transition from Townsend to glow discharge can show the textbook subcritical behavior, but for smaller values of pd, we also find supercritical or some unexpected intermediate mixed behavior. Our work shows the same qualitative dependence of U=U(I,pd) for fixed ? as the old experiments by Pokrovskaya-Soboleva and Klyarfeld. Furthermore, the analysis lays the basis for understanding the complex spatiotemporal patterns in short planar barrier discharge systems.

Danijela D. ija?i? and Ute Ebert

2002-12-18T23:59:59.000Z

489

Spatiotemporal patterns in a dc semiconductor-gas-discharge system: Stability analysis and full numerical solutions  

Science Journals Connector (OSTI)

A system very similar to a dielectric barrier discharge, but with a simple stationary dc voltage, can be realized by sandwiching a gas discharge and a high-ohmic semiconductor layer between two planar electrodes. In experiments this system forms spatiotemporal and temporal patterns spontaneously, quite similarly to, e.g., Rayleigh-Bnard convection. Here it is modeled with a simple discharge model with space charge effects, and the semiconductor is approximated as a linear conductor. In previous work, this model has reproduced the phase transition from homogeneous stationary to homogeneous oscillating states semiquantitatively. In the present work, the formation of spatial patterns is investigated through linear stability analysis and through numerical simulations of the initial value problem; the methods agree well. They show the onset of spatiotemporal patterns for high semiconductor resistance. The parameter dependence of temporal or spatiotemporal pattern formation is discussed in detail.

Ismail R. Rafatov, Danijela D. ija?i?, and Ute Ebert

2007-09-12T23:59:59.000Z

490

Reuse, Treatment, and Discharge of the Concentrate of Pressure-Driven Membrane Processes  

Science Journals Connector (OSTI)

The concentration factor (CF, the ratio of the concentration of a component i in concentrate and feed) can be calculated from the mass balance for component i: and thus where Q is the volumetric flow (L/h) and C is the concentra tion (mg/L); the subscripts r, f, p, and i refer to the concentrate (or retentate), the feed, the permeate, and the component used, respectively. ... In 48% of the installations, the concentrate was discharged in surface water; in 23%, the concentrate was treated in a wastewater treatment plant; in 13%, the concentrate was reused on the land for, for example, irrigation; in 10%, the concentrate was discharged to groundwater by deep injection; and in the remaining 6%, the concentrate was discharged to evaporation ponds. ... Advantages of using vapor compression distn. in combination with reverse osmosis plants for treating reject brine for inland locations as compared to lined evapn. ...

Bart Van der Bruggen; Liesbeth Lejon; Carlo Vandecasteele

2003-08-02T23:59:59.000Z

491

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

SciTech Connect

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.

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)

2014-06-15T23:59:59.000Z

492

Experimental study on hard X-rays emitted from metre-scale negative discharges in air  

E-Print Network (OSTI)

We investigate the development of meter long negative discharges and focus on their X-ray emissions. We describe appearance, timing and spatial distribution of the X-rays. They appear in bursts of nanosecond duration mostly in the cathode area. The spectrum can be characterized by an exponential function with 200 keV characteristic photon energy. With nanosecond-fast photography we took detailed images of the pre-breakdown phenomena during the time when X-rays were registered. We found bipolar discharge structures, also called "pilot systems", in the vicinity of the cathode. As in our previous study of X-rays from positive discharges, we correlate the X-ray emission with encounters between positive and negative streamers. We suggest that a similar process is responsible for X-rays generated by lightning leaders.

Kochkin, P O; Ebert, Ute

2015-01-01T23:59:59.000Z

493

Discharge characteristics of lithium/copper oxide ``D`` cells (SAFT No. LCH20); Development report  

SciTech Connect

This report presents data which was generated during a series of discharge tests performed on Lithium/Copper Oxide (LiCuO) ``D`` cells manufactured by SAFT, Poitiers, France. The discharge tests were run using three different resistive load sequences at four different temperatures. The tests generated data which demonstrated the limitations of the effectiveness of the crimp seal used in the closure of the cell during its manufacturing cycle. Graphs depicting discharge curves (data on voltage versus time) are presented in this report. Test results indicate that the cells perform best in moderate temperature. The higher temperatures (greater than 40{degree}C) tend to cause excessive leakage at the crimp seal as well as some degradation in cell voltage at all load conditions. Lower temperatures (below 0{degree}C) have more of an effect on the cells` ability to deliver rated capacity than on the rate of current drain. 11 figs., 5 tabs.

Pitre, L.J. Jr.

1989-06-01T23:59:59.000Z

494

Partial discharge measurements on a high voltage direct current mass impregnated paper cable  

SciTech Connect

Partial discharge measurement has been a good tool for the quality assurance of cables under alternating voltage. With the growing interest in High Voltage Direct Current cables it seems therefore logical to extend this technique for use at direct voltage. The paper describes this technique as used on a HVDC cable with mass impregnated paper. The different phases of operation (no load, full load, cooling phase, etc.) are characterized by a different discharge behavior. Special attention is given to the dangerous cooling phase. Models have been developed which can explain the discharge patterns that were measured. This paper gives an insight in the electrical behavior of a HVDC cable with mass impregnated paper insulation.

Jeroense, M.J.P. [NKF KABEL B.V., Delft (Netherlands); Kreuger, F.H. [Delft Univ. of Technology (Netherlands)

1996-12-31T23:59:59.000Z

495

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

DOE Patents (OSTI)

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

Webb, Michael R. (Somerville, MA); Hieftje, Gary M. (Bloomington, IN); Andrade, Francisco (Leeds, GB)

2011-04-19T23:59:59.000Z

496

The effect of electric current on the synthesis of single-walled carbon nanotubes by temperature controlled arc discharge  

Science Journals Connector (OSTI)

The effect of discharge current on the synthesis of single-walled carbon nanotubes (SWCNTs) was studied under controlled atmosphere at 500C by electric arc discharge. It was shown that the production rate of collected soot was increased but the purity of \\{SWCNTs\\} decreased with increasing discharge current. With a current of 100A, the SWCNT was very uniform in diameter and a high purity rate of 55% was achieved, as shown by TEM and Raman spectra. Then the influence of electric force, discharge current and catalyst distribution on the formation of \\{SWCNTs\\} was also discussed.

Delong He; Tingkai Zhao; Yongning Liu; Jiewu Zhu; Guang Yu; Liling Ge

2007-01-01T23:59:59.000Z

497

Arc discharge regulation of a megawatt hot cathode bucket ion source for the experimental advanced superconducting tokamak neutral beam injector  

SciTech Connect

Arc discharge of a hot cathode bucket ion source tends to be unstable what attributes to the filament self-heating and energetic electrons backstreaming from the accelerator. A regulation method, which based on the ion density measurement by a Langmuir probe, is employed for stable arc discharge operation and long pulse ion beam generation. Long pulse arc discharge of 100 s is obtained based on this regulation method of arc power. It establishes a foundation for the long pulse arc discharge of a megawatt ion source, which will be utilized a high power neutral beam injection device.

Xie Yahong; Hu Chundong; Liu Sheng; Jiang Caichao; Li Jun; Liang Lizhen [Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031 (China); Collaboration: NBI Team

2012-01-15T23:59:59.000Z

498

Design of a precision grinder with closed loop optical feedback for the manufacture of micro electro discharge machining electrodes.  

E-Print Network (OSTI)

??This research focuses on the design of a precision grinder for the manufacture of electrodes used in micro-electro discharge machining (EDM). Electrodes used in micro- (more)

Howe, Matthew Riga

2009-01-01T23:59:59.000Z

499

Production and evaluation of rapid tooling for electric discharge machining using electroforming and spray metal deposition techniques.  

E-Print Network (OSTI)

??To survive in today's manufacturing environments companies must push the standards of accuracy and speed to the highest levels possible. Electro Discharge Machining (EDM) has (more)

Blom, Ricky J

2005-01-01T23:59:59.000Z

500

Process characterization of Electrical Discharge Machining of highly doped silicon ; Process characterization of EDM of highly doped silicon .  

E-Print Network (OSTI)

??Electrical Discharge Machining (EDM) is an advanced machining process that removes material via thermal erosion through a plasma arc. The machining process is accomplished through (more)

Crawford, Gregory Allan

2012-01-01T23:59:59.000Z