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Title: Determination of the coefficient of reflection of metastable argon atoms from the discharge tube wall

Abstract

Radial profiles of the density of metastable atoms Ar({sup 3}P{sub 2}) in the positive column of a dc glow discharge in argon were measured. Gas-discharge glass tubes with clean inner surfaces and surfaces covered with a carbonitride or carbon film were utilized. The parameters of the discharge plasma under experimental conditions were calculated in the framework of a one-dimensional (along the tube radius) discharge model. The coefficient K of reflection of Ar({sup 3}P{sub 2}) atoms from the tube wall was estimated by comparing the measured and calculated density profiles. It is found that, for a clean tube wall, the coefficient of reflection is K = 0.4 ± 0.2, whereas for a wall covered with a carbonitride or carbon film, it is K < 0.2.

Authors:
 [1]; ;  [2]
  1. St. Petersburg State University (Russian Federation)
  2. Troitsk Institute for Innovation and Fusion Research (Russian Federation)
Publication Date:
OSTI Identifier:
22472333
Resource Type:
Journal Article
Journal Name:
Plasma Physics Reports
Additional Journal Information:
Journal Volume: 41; Journal Issue: 5; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-780X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ARGON; ATOMS; CARBON; COMPARATIVE EVALUATIONS; FILMS; GLOW DISCHARGES; PLASMA; PLASMA DENSITY; PLASMA RADIAL PROFILES; POSITIVE COLUMN; REFLECTION; SURFACES

Citation Formats

Grigorian, G. M., Dyatko, N. A., and Kochetov, I. V., E-mail: kochet@triniti.ru. Determination of the coefficient of reflection of metastable argon atoms from the discharge tube wall. United States: N. p., 2015. Web. doi:10.1134/S1063780X15050049.
Grigorian, G. M., Dyatko, N. A., & Kochetov, I. V., E-mail: kochet@triniti.ru. Determination of the coefficient of reflection of metastable argon atoms from the discharge tube wall. United States. doi:10.1134/S1063780X15050049.
Grigorian, G. M., Dyatko, N. A., and Kochetov, I. V., E-mail: kochet@triniti.ru. Fri . "Determination of the coefficient of reflection of metastable argon atoms from the discharge tube wall". United States. doi:10.1134/S1063780X15050049.
@article{osti_22472333,
title = {Determination of the coefficient of reflection of metastable argon atoms from the discharge tube wall},
author = {Grigorian, G. M. and Dyatko, N. A. and Kochetov, I. V., E-mail: kochet@triniti.ru},
abstractNote = {Radial profiles of the density of metastable atoms Ar({sup 3}P{sub 2}) in the positive column of a dc glow discharge in argon were measured. Gas-discharge glass tubes with clean inner surfaces and surfaces covered with a carbonitride or carbon film were utilized. The parameters of the discharge plasma under experimental conditions were calculated in the framework of a one-dimensional (along the tube radius) discharge model. The coefficient K of reflection of Ar({sup 3}P{sub 2}) atoms from the tube wall was estimated by comparing the measured and calculated density profiles. It is found that, for a clean tube wall, the coefficient of reflection is K = 0.4 ± 0.2, whereas for a wall covered with a carbonitride or carbon film, it is K < 0.2.},
doi = {10.1134/S1063780X15050049},
journal = {Plasma Physics Reports},
issn = {1063-780X},
number = 5,
volume = 41,
place = {United States},
year = {2015},
month = {5}
}