Results 301 to 310 of about 248,513 (327)

Plasma destruction of flue gases

IEE Colloquium Pulsed Power '97, 1997
Nonthermal electrical discharges with sufficiently high electron energies can reduce NO (nitric oxide) levels in air-like gases (e.g. flue gas) to zero and will, with sufficiently high energy input, also reduce the concentration of nitrogen dioxide (NO/sub 2/) and thus of total NO/sub x/, besides destroying various other pollutants.
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Plasma discharge fuelling by reactive gases

Journal of Nuclear Materials, 1992
In the framework of developing on-line in situ wall conditioning methods for long pulse tokamaks, the injection of reactive gases into the scrape-off layer during a discharge was investigated. Transport in the plasma scrape-off layer is used to distribute the gas atoms around the torus and condition the walls by deposition of appropriate material ...
H.G. Esser, J. Winter, V. Philipps, H.B. Reimer, J. von Seggern, P. Wienhold   +5 more
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Basic Physics of Gases and Plasmas

2019
Matter appears on our planet, in the solar system and in the rest of Universe in rather different forms.
Werner Ebeling, Thorsten Pöschel
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Optical Frequency Plasma Resonance in Gases

Journal of Applied Physics, 1966
An intense optical beam is reflected backwards from a laser-induced spark in argon and nitrogen gas at high pressures. The reflected beam is about 10% as intense, diverges with a comparable angle, and has the same frequency (to within about 0.01 cm−1) as the incident beam.
R. W. Minck, W. G. Rado
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Plasma polymerization of mixed monomer gases

Journal of Polymer Science Part A: Polymer Chemistry, 1988
AbstractIn this paper, plasma polymerization of mixed monomer gases was studied. In the films, the elements derived from each monomer are contained, and they are distributed homogeneously at a certain depth. The films are made up by the copolymers in which both monomers are combined.
Jiro Sakata, Minoru Yamamoto, Ichiro Tajima   +2 more
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Mass spectrometry of fusion-plasma gases

Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1992
In a D–T fusion plasma, not only the components of primary interest (D2, T2, 4He), but also H2 and reaction products like HD, HT, and DT have to be considered. Even traces of 3He may be found in the system. For mass-spectrometric analyses of these eight gas species, at most six data are usable out of the mass range 1 to 6.
R. Dobrozemsky, G. W. Schwarzinger
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Ultracold neutral plasmas and Rydberg gases

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2005
We present two different theoretical approaches for the simulation of ultracold plasmas and Rydberg gases, namely a simple kinetic model including an approximate treatment of ionic correlations on the one hand and a hybrid molecular dynamics (MD) approach treating the electrons as a fluid but ions and atoms on a full MD level on the other hand.
Pattard, T, Pohl, T, Rost, JM
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Electronegative plasmas diluted by rare gases

Journal of Physics D: Applied Physics, 2003
This paper considers the case where an electronegative gas is diluted by an electropositive one, as is typical in plasma processing applications, and examines the way in which the relevant parameters vary.The impact of dilution is examined over a wide range of pressures (3 mTorr cm–300 Torr cm) and a wide range of degrees of ionization (10−6–10−2), for
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Elementary Processes in Gases and Plasmas

2018
Elementary processes involving atoms, electrons and ions are analyzed. Peculiarities of cross sections and rate constants as characteristics of these processes are considered. Various pair and three body collision processes are considered as elastic electron-atom scattering, processes of excitation, quenching and ionization of atoms by electron impact,
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Pumping chlorinated gases in plasma etching

Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1983
Plasma etching of aluminum, aluminum alloys, and some other materials involves the use of chlorine-based gases which are particularly corrosive to vacuum systems if precautions are not taken. Emphasizing safety concerns, we will demonstrate the proper use of cold traps, activated charcoal sorbent, and/or inert synthetic fluids to lubricate forepumps ...
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