Effect of positive and negative ion energies on H−destruction by mutual neutralization in low‐pressure plasmas
作者:
A. M. Bruneteau,
M. Bacal,
期刊:
Journal of Applied Physics
(AIP Available online 1985)
卷期:
Volume 57,
issue 9
页码: 4342-4348
ISSN:0021-8979
年代: 1985
DOI:10.1063/1.334593
出版商: AIP
数据来源: AIP
摘要:
The effect of plasma potential profile and collisions with neutrals and charged particles upon positive and negative ion energies has been studied in a low‐pressure (2–13.6 mTorr) hybrid magnetic multicusp hydrogen discharge. When the plasma density is lower than 1011cm−3, the negative ion temperature is always close to the gas temperature, while the positive ion temperature goes down from 1 to 0.1 eV when the pressure goes up. The observed reduction of the relative negative ion density when the pressure is increased is shown to be related to the reduction of positive ion velocities and to the associated increase in the mutual neutralization rate coefficient.
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