In-situ calibration for electric field measurements in glow-discharge plasmas by laser-induced fluorescence using the optogalvanic technique

We proposed and performed an in-situ calibration of electric field determination in glow-discharge plasmas based on the Stark effect, to relate ratios of laser-induced fluorescence (LIF) intensities (forbidden/allowed) with electric fields E , where accurate E values were measured by the laser optog...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 1991, Vol.30 (1), p.166-170
Main Authors: YAMAGATA, Y, KAWANO, Y, MURAOKA, K, MAEDA, M, AKAZAKI, M
Format: Article
Language:English
Subjects:
Electric discharges
Exact sciences and technology
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
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Summary:We proposed and performed an in-situ calibration of electric field determination in glow-discharge plasmas based on the Stark effect, to relate ratios of laser-induced fluorescence (LIF) intensities (forbidden/allowed) with electric fields E , where accurate E values were measured by the laser optogalvanic (LOG) method. The results were compared with Bell Lab Group static calibration, and yielded 30% lower E value at a given fluorescence intensity. It is discussed, by the aid of solutions of rate equations for the LIF processes, that the present calibration is more accurate at higher electric field ( E >100 V/mm) than that obtained by extrapolation of Bell Lab Group results at lower field ( E
ISSN:0021-4922
1347-4065
DOI:10.1143/jjap.30.166