Compressive acoustic pulses were produced by an impulsive abnormal-glow discharge and the interaction of these pulses with the positive column of a dc neon glow discharge was studied. The acoustic pulses are analyzed and are found to be infinitesimal ampl...
National Technical Information Service (NTIS)
... Spectroscopy, Energy Transfer, and Techniques," addresses a ... itself to quasi-optical techniques. ... rich negative glow of an abnormal glow discharge. ...
DTIC Science & Technology
... Abstract : Glow Discharge Optical Spectroscopy (GDOS) was used as a ... in a dc glow discharge. ... COMPOSITION), GLOW DISCHARGES, BORON ...
... by glow discharge in a ... HARDENING, GLOW DISCHARGES, OXIDES, SURFACE ... Subject Categories : METALLURGY AND METALLOGRAPHY ...
Formal transformation of equations (2) is made by defining certain integral .... Sonin, A. A.: The Behavior of Free Molecular Cylindrical Langmuir Probes in ...
NASA Website
Measurements of rotational temperature as low as several hundred Kelvin have been achieved using optical emission spectroscopy (OES) in nitrogen DC glow discharge. The strongest band of the first negative system of nitrogen molecule ion was chosen to determine the rotational temperature of nitrogen DC glow ...
PubMed
... Descriptors : , (*DISCHARGE TUBES, GLOW DISCHARGES), (*GLOW DISCHARGES, EXCITATION ... Subject Categories : ELECTRICAL AND ...
... The atmospheric pressure glow discharge in ... Descriptors : *NITROGEN, *OPTICAL ANALYSIS, *GLOW DISCHARGES, *BAROMETRIC ...
... to an existing Glow Discharge Optical Spectroscopy (GDOS) apparatus ... ION IMPLANTATION, *GLOW DISCHARGES, *ATOMIC SPECTROSCOPY ...
... Title : Glow Discharge Optical Spectroscopy for ... Descriptors : *SPECTROSCOPY, *SEMICONDUCTORS ... SILICON, *GLOW DISCHARGES, *BORON ...
... Abstract : The Glow Discharge Optical Spectroscopy technique ... dc glow discharge using ... ION IMPLANTATION, *GLOW DISCHARGES, MAGNESIUM ...
Measurements of rotational temperature as low as several hundred Kelvin have been measured using optical emission spectroscopy (OES) in nitrogen direct current (DC) glow discharge. The strongest band of the first negative system of nitrogen was chosen to deduce the rotational temperature at four different positions in nitrogen DC glow ...
This paper considers the optical and electrical characterization of AC glow discharge plasma in the abnormal glow mode used for optical emission spectroscopy. The total discharge current and applied voltage are measured using conventional techniques. The electrical characteristics of the ...
Energy Citations Database
Hydrogen Balmer lines were observed in the plasma of a plane-cathode abnormal glow discharge in mixtures of argon or neon with hydrogen and in pure hydrogen. Intense spectral-line wing development was detected whenever argon was present in the plasma. This effect is related to the formation of H{sub 2}{sup +} ions in a charge-transfer ...
The results of studies on the mechanism of the phenomena occurring at the discharge cathode in glow discharge were presented. The kinetics of the positive ions were first considered with a discussion of the drift velocity of the ions, a study of positive ion kinetics by reverse field method, and a computation of resonant ...
Ceresin wax, n-octacosane, and methane have been subjected to treatment in a plasma discharge of the abnormal negative glow type. A polymer formed on a liquid-nitrogen temperature substrate plate as a result of the treatment. The polymer was collected and...
The purpose of this thesis was to investigate the reproducibility of a quiescent plasma generated in a large volume discharge tube with argon gas, operated in the abnormal glow regime. Reproducibility was determined by observation of the variation of the ...
... OF VARIATIONAL CURRENT IN GLOW DISCHARGE VOLTAGE REGULATOR TUBES. ... Descriptors : *VOLTAGE REGULATORS, *DISCHARGE ...
... Title : OPTICAL ABSORPTION IN GLOW DISCHARGE AMORPHOUS SILICON FILMS. Descriptive Note : Journal article,. ...
... the micro-discharge based ... SATELLITES, *GLOW DISCHARGES, *THRUSTERS ... Subject Categories : NUMERICAL MATHEMATICS ELECTRICITY ...
... High Magnetic Field Glow Discharge Ionization Source ... Elemental Mass Spectrometry, Glow Discharge Ionization, High Magnetic Fields 16. ...
... Glow Discharge Mass Spectrometry ... ANALYSIS OF SEMI-INSULATING BULK GaAs USING GLOW DISCHARGE MASS SPECTROMETRY ...
Tungsten films were plasma-deposited using an abnormal glow discharge through a mixture of tungsten hexafluoride, hydrogen, and argon. The films adhered well to silicon, silicon dioxide, gallium arsenide, and aluminum substrates placed directly on the dis...
The essential feature in this cathode-anode configuration is that the wall is made up of metal rings which are insulated from each other. Sputtering cannot short the insulators. The disk cathodes can be manufactured from a variety of conducting materials....
... Title : ELECTRICAL PROPERTIES OF RADIO FREQUENCY GLOW DISCHARGES IN AIR AT ATMOSPHERIC PRESSURE. ...
Results of a Doppler spectroscopy study of the hydrogen Balmer alpha line in an abnormal glow discharge operated in pure hydrogen are reported. Measurements of line shapes are performed side-on to the discharge axis in a low electric field region of negative glow. The excessive Balmer alpha ...
... Title : UV Sustained Glow Discharge Opening Switch. ... This research has a significant technological application in opening switches. ...
... Descriptors : *GLOW DISCHARGES, *ELECTRIC PROPULSION, IONS, DYNAMICS, PLASMAS(PHYSICS), THEORY, ELECTRIC FIELDS, GASES ...
... Accession Number : ADA361406. Title : Space Charge Structure of a Glow Discharge in the Presence of a Longitudinal Inhomogeneity. ...
... Title : SELECTIVE ABSORBER USING GLOW-DISCHARGE AMORPHOUS SILICON FOR SOLAR PHOTOTHERMAL CONVERSION. ...
... the effects of glow discharge cleaning ... perveance measurements, optical interferometry ... PROPERTIES, HEATING, GLOW DISCHARGES, CLEANING ...
... Accession Number : AD0611085. Title : OBTAINING ELEMENTARY BORON IN A GLOW DISCHARGE,. Corporate Author ...
... Accession Number : AD0481348. Title : MOVING STRIATIONS IN AN ARGON GLOW DISCHARGE. Descriptive Note : Master's thesis,. ...
... Title : Glow Discharge Optical Spectroscopy for Microvolume Elemental Analysis and Sputtering Diagnostics. Descriptive Note : Technical rept.,. ...
Microhollow cathode discharges (MHCDs) are DC or pulsed gas discharges between two electrodes, separated by a dielectric, and containing a concentric hole. The diameter of the hole, in this hollow cathode configuration, is in the hundred-micrometer range. MHCDs satisfy the two conditions necessary for an efficient excimer radiation sources: (1) high energy ...
NASA Astrophysics Data System (ADS)
Contact glow discharge electrolysis is a non-Faradaic electrochemical process with an abnormal relationship between the current and voltage. Hydroxyl radicals, hydrogen radicals and hydrogen peroxide can be produced under the glow discharge, which are often used to degrade organic contaminants ...
... initiates a quasi-homogeneous glow discharge. This discharge is about 10 ns in ... EMISSION, *ELECTRIC DISCHARGES, *AVALANCHE EFFECT ...
... is very sensitive to discharge current, gas ... LASERS, *GLOW DISCHARGES, *CATHODES, ELECTRIC DISCHARGES, TRANSLATIONS ...
Various laser diagnostics are used to study the cathode fall and negative glow regions of a He glow discharge with a cold Al cathode. The electric field and absolute metastable densities are mapped and the gas temperature is measured over a range of current densities from a near normal (173V) to a highly abnormal ...
... in a low pressure argon gas discharge. ... IMPURITIES, IONS, OPTICAL PROPERTIES ... EMISSION, CHROMIUM, GLOW DISCHARGES, SPUTTERING ...
... on the analysis of the optical emission of ... Radio frequency excitation of the glow discharge (RF-GD ... coupled radio frequency discharges have been ...
... Subject index to significant articles, news items, and ... This method uses glow discharges in air and ... all the advantages of discharge techniques and is ...
... regimes of the spherical glow discharges were formed ... initial radial distribution of the electric field. ... model, it was assumed that a spherical discharge ...
The cleaning of large Tokamak vessels with glow discharges as a source of H atoms is discussed, drawing on industrial experience in their use for the improvement of metal surfaces. Glow discharge is dealt with in relation to Townsend discharge and arcing....
Glow discharge mass spectrometry (GDMS) is an in situ method used to determine the mass and energy of positive ions incident on the substrate during sputter deposition. In the first part of this review, we describe the sputtering glow discharge, creation ...
... with calculations made for homogeneous plasma layers, if ... following the discharge. ... IMPEDANCE, GLOW DISCHARGES, HALOCARBON PLASTICS ...
... component, discharge current ... ADDITIVES, OPTICAL MATERIALS, ELECTROCHEMISTRY, GLOW DISCHARGES, SPECTROSCOPY. ...
... properties, but also on the electric circuit associated with the discharge. ... A minimum voltage is required to maintain the discharges. ...
-3 . The gas temperature of the argon and nitrogen discharge was determined by optical emission spectroscopy (OES). The light was collected with a fibre optic cable that was attached to a monochromator, the discharge voltage increased linearly with the current, exhibiting an abnormal glow. It can be seen that all
E-print Network
optical emission spectroscopy OES . Thea Electronic mail: rhicks@ucla.edu JOURNAL OF APPLIED PHYSICS 99 of an abnormal glow discharge.1 The plasma was turned off at the end of the solid curve to avoid any damage by the discharge was measured by NO titration, and found to equal 1.2 vol %, or 1.2�0.4 1017 cm-3 , ...
All of our projects involve the glow discharge source as our basic research focus. Our primary effort is glow discharge mass spectrometry, but we frequently use complementary procedures such as atomic absorption and atomic emission in the glow discharge to obtain useful ...
DOE Information Bridge
A method for conformally coating a microtextured surface. The method includes flash evaporating a polymer precursor forming an evaporate, passing the evaporate to a glow discharge electrode creating a glow discharge polymer precursor plasma from the evaporate, cryocondensing the glow ...
DOEpatents
Application of a magnetic field in a direction transverse to the electric field in a diffuse discharge can have a strong effect on the transport parameters in the discharge medium and on the external characteristics of the discharge as a whole. Deviations in these transport parameters were investigated in this work by means of Monte ...
... Accession Number : AD0274470. Title : IMPEDANCE AND ION TRANSIT TIMES IN GLOW DISCHARGE TUBES. Corporate ...
... Accession Number : AD0817559. Title : ACOUSTIC PERTURBATION OF A NEON GLOW DISCHARGE. Descriptive Note : Doctoral thesis,. ...
Spectroscopic measurements of the glow discharge were made in an ... All snapover electrical and optical experiments ..... Spectroscopic analysis of the glow ...
... Abstract : A homogeneous atmospheric pressure glow discharge ... of the discharge are measured ... Descriptors : *ELECTRIC DISCHARGES, *HELIUM ...
... Title : Optical and Discharge Studies of Novel ... COMPOUNDS, GLOW DISCHARGES, TELLURIUM ... SELENIUM, IODIDES, QUENCHING(INHIBITION ...
... into a homogeneous negative glow ... using measurements of discharge current, voltage ... STRUCTURES, *ELECTRIC DISCHARGES, *IONIZATION ...
... of a pulse discharge with a ... Descriptors : (*GLOW DISCHARGES, ELECTRON DENSITY ... Subject Categories : ELECTRICITY AND MAGNETISM ...
A new type of a simple LaB6 hollow cathode tube allows us to have very stable discharge even in the regime of the glow-arc transition, which is commonly unstable for widely used cathode materials (Ta,W). Because of the relatively large size of our device (25 mm diameter) and the low-temperature operation (~1400 K), we were able to investigate various ...
The possibility of nitriding titanium in a glow discharge in a purified nitrogen medium was established. Nitriding in a glow discharge occurs two to three times faster than during furnance heating. The phase composition of the nitrided layer was defined a...
Methan glow discharge system on JT-60 was developed to coat carbon on the surface of the first wall. The objective of this system is to produce the carbon coating on the surface of the first wall and to make the glow discharge for the treatment of the fir...
Glow-Discharge Plasma Actuators. NASA/TM2003-212204/REV1. December 2004. AIAA 20031025 .... indicate that the glow-discharge plasma actua- ...
An electrodeless glow discharge by 13.5 MHz radio frequency was used to modify the surface of polymers. Glow discharge treatment with a gas (approximately 50 micrometers Hg pressure at 30 watts) increased the wettability of all polymer surfaces examined (...
Abnormal glow discharge created electron beams, applied to microelectronic film processing, have been studied theoretically and experimentally. The beam mode of operation occurs in the discharge region adjacent to the glow to arc transition regime. A numerical model simulates the energy ...
Page 1. NRL Report 7973 Surface Cleaning by Glow Discharge in a High-Volume Gas Flow LJAMES P. WESTON AND WILLIAM W. BALWANZ ...
... Descriptors : (*CARBON DIOXIDE, *ULTRAVIOLET SPECTRA), (*GAS LASERS, CARBON DIOXIDE), GLOW DISCHARGES, CARBON MONOXIDE ...
... Accession Number : ADA400898. Title : Particle Simulation of CH4/H2 RF Glow Discharges for DLC Film Deposition. Descriptive ...
Sep 18, 2009 ... This system is a microhollow glow discharge-based electronic sniffer (MHGD Sniffer) and provides the basis for the proposed NASA effort. ...
Sep 3, 2010 ... Makel Engineering, Inc. (MEI) and Penn State University (PSU) propose to develop a highly sensitive spectrometer based on glow discharge ...
... Title : Ion Nitriding of Titanium in a Glow Discharge,. Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO. ...
... Abstract : Nichrome wire in the shape of a coil was plasma nitrided in a RF glow discharge using a hot filament technique. ...
... Title : High Mass Resolution Glow Discharge Mass Spectrometry Using an External Ion Source FT-ICR Mass Spectrometer. ...
Jan 20, 2005 ... In addition, it was the first time that hot-wire measurements were made in presence of glow discharge plasma. It was first set of direct ...
Ion-nitriding is a glow discharge surface modification technique primarily ... During ion-nitriding the specimen is the cathode of the do glow discharge. ...
... Title : Carbonitriding at 1050 C in a Glow-Discharge Plasma,. ... hardenability, and thus small parts made of low-carbon steels may be oil quenched. ...
Low speed wind tunnel data have been acquired for planar panels covered by a uniform, glow-discharge
NASA Technical Reports Server (NTRS)
... Accession Number : ADA128553. Title : An Effect of Turbulent Diffusion on the Glow Discharge-to-Arc Transition. Descriptive Note : Master's thesis,. ...
An ambient atmosphere glow discharge spectrometer is disclosed having a capillary, two electrodes and a means for recording the atomic emissions.
... We report in this paper the successful coupling of a 4 Page 7. glow discharge ion source to an FTICR mass spectrometer. The results of initial ...
... Title : A Glow Discharge Ion Source with Fourier Transform Ion Cyclotron Resonance Mass Spectrometric Detection. Descriptive ...
Details of the processes occurring during sample atomization from a ''microarc'' discharge have been studied photometrically, by use of high-speed color cinematography and through current-voltage waveforms. The microarc studied here is an atmospheric-pressure inert-gas glow discharge supported ...
Abnormal nipple discharge may be described as any discharge not associated with lactation. The nature of the discharge may range in ...
MedlinePLUS
Their relative engineering simplicity, plasma uniformity and chemistry make Atmospheric Pressure Glow Discharges (APGD) very attractive for plasma processing applications. Here some of the basic characteristics of glow discharges are introduced. The basic dielectric barrier discharge and how it ...
In this work, we carried out two-dimensional numerical simulation of atmospheric pressure dc glow discharge with miniature helium flow in nitrogen. The glow discharge is generated along the helium flow, which is injected from the nozzle anode into the discharge region filled with nitrogen. The ...
The use of a wide-area electron beam to aid the deposition of epitaxial silicon films has been studied. The electron beam used in this study is generated using a cold cathode, abnormal-glow discharge which allows a wide variation of electron energy and be...
A method and apparatus for stabilizing glow plasma discharges by suppressing the transition from glow-to-arc includes a perforated dielectric plate having an upper surface and a lower surface and a plurality of holes extending there through. The perforate...
Atmospheric Glow Technologies is developing an innovative mobile atmospheric plasma decon system based upon the patented one atmosphere uniform glow discharge plasma (OAUGDP) technology. This advanced system will be a deployable military protection system...
The cleaning of large Tokamak vessels with glow discharges as a source of H atoms is discussed, drawing on industrial experience in their use for the improvement of metal surfaces. Glow discharge is dealt with in relation to Townsend discharge and arcing. The stability of the ...
In this paper influence of cathode material on formation of fast hydrogen atoms in an abnormal glow discharge is investigated using Balmer alpha emission spectroscopy. Energetic H atoms are generated in charge exchange reactions of hydrogen ions that are accelerated in the electric field, and also formed in the backscattering process ...
This was combined theoretical and experimental research program to determine discharge performance characteristics and the influence of various gas mixture additives on discharge performance for UV-sustained glow discharges. This research has a significan...
... Accession Number : AD0488325. Title : RESONANT RADIATION AND MOVING STRIATIONS IN AN ARGON GLOW DISCHARGE. ...
... GLOW DISCHARGES (U) (*FLUORIDES), (*CHLORINE COMPOUNDS), (*BROMINE COMPOUNDS), RADIOFREQUENCY GENERATORS ...
... PLASTICS, VAPOR PLATING, ALUMINUM, ELECTRODES, MANUFACTURING, MATERIALS, DIELECTRIC PROPERTIES, GLOW DISCHARGES. ...
... Title : MEASUREMENT OF ACOUSTIC PRESSURES ASSOCIATED WITH MOVING STRIATIONS IN A NEON GLOW DISCHARGE. ...
... AIR, *EXPLOSIONS, *OXIDES, *NITROGEN COMPOUNDS, SIMULATION, OSCILLOSCOPES, TEMPERATURE, PLATINUM, GLOW DISCHARGES ...
... then only with high proportions of nitric oxide. ... REACTIONS), HYDROCARBONS, NITROGEN COMPOUNDS, OXIDES, AROMATIC COMPOUNDS ...
... Accession Number : ADD104195. Title : CORROSION OF THE CARBIDES OF TRANSITION METALS IN A GLOW DISCHARGE PLASMA. ...
... Accession Number : AD0828261. Title : ACOUSTIC INTERACTION WITH THE POSITIVE COLUMN OF A NEON GLOW DISCHARGE. ...
