期刊
CONTRIBUTIONS TO PLASMA PHYSICS
卷 53, 期 7, 页码 549-559出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ctpp.201200114
关键词
Escape factor; rf discharge in argon; metastable state; emission spectroscopy; TDLAS
资金
- Deutsche Forschungsgemeinschaft [SFB/TR 24]
- National Foundation for Science and Technology Development (NAFOSTED), Vietnam, [103.05-2012.20]
Reabsorption of the emitted light in the plasma volume has recently been used for density measurements of the lower level of optical transition by interpretation of emission spectra employing the escape factor concept. Following this idea, we apply this method to a radio-frequency argon discharge. By revising the theoretical background, the impact of different assumptions on excited species spatial distributions is investigated. Comparing with 1s(5) and 1s(4) concentrations obtained with laser absorption spectroscopy, the range of applicability of those assumptions is analyzed at different discharge parameters. ((c) 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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