Collisional Ionization of Excited State Neon in a Gas Discharge Plasma
作者:
X. L. Han,
V. Wisehart,
S. E. Conner,
M.‐C. Su,
D. L. Monts,
期刊:
Contributions to Plasma Physics
(WILEY Available online 1995)
卷期:
Volume 35,
issue 4‐5
页码: 439-452
ISSN:0863-1042
年代: 1995
DOI:10.1002/ctpp.2150350412
出版商: WILEY‐VCH Verlag
数据来源: WILEY
摘要:
AbstractWe report the first case where it is possible to clearly identify and quantitatively characterize the dominant physical processes contributing to production of the optogalvanic effect (OGE) signal in a discharge plasma. This work concentrates on the simplest case where only two states are involved in the optical transition. The theoretical model with only four parameters is in excellent agreement with the experimentally obtained time‐resolved OGE waveforms. The collisional ionization rate in the upper state is twice as fast as that in the lower state although the two states are only separated by 1.94 eV. We conclude that the optogalvanic effect of the neon 640.22 nm transition is due primarily to the electron collisional ionization of the neon atoms. An alternative interpretation for the lengthening of the final state lifetime is also included (see Appendix
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