THE MECHANISM OF THE STABILIZATION OF GLOW PLASMA AT ATMOSPHERIC-PRESSURE

被引:240
作者
YOKOYAMA, T
KOGOMA, M
MORIWAKI, T
OKAZAKI, S
机构
[1] Sophia University, Kioi-cho 7-1, Tokyo, Chiyoda-ku
关键词
D O I
10.1088/0022-3727/23/8/021
中图分类号
O59 [应用物理学];
学科分类号
摘要
Some reasons are discussed for the stabilisation of a glow discharge at atmospheric pressure which was attained by controlling the following three conditions: the use of a high-frequency source, the use of He gas for dilution and the insertion of a dielectric plate between electrodes. The three conditions interact: the dielectric plate in a plasma forms the pulsed discharge from a low-frequency source, the fast duration of pulse current prevents a transition to an arc style discharge and a large volume of metastable atomic helium aids ionisation or dissociation near the electrode plate and in the flowing gas. The measurements of discharge-maintaining voltage at several hundred volts provide evidence that this is really a glow plasma at atmospheric pressure. The changes of the emission intensities of metastable helium prove indirectly that some dissociation occurs as a result of the action of the helium atom. © 1990 IOP Publishing Ltd.
引用
收藏
页码:1125 / 1128
页数:4
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