Optogalvanic effect in plasmas and gases

V.N. Ochkin^a, N.G. Preobrazhenskii, N.N. Sobolev, N.Ya. Shaparev
^aLebedev Physical Institute, Russian Academy of Sciences, Leninsky prosp. 53, Moscow, 119991, Russian Federation

The status of optogalvanic (OG) spectroscopy, involving a change in the impedance of a gas or plasma, with tunable lasers is examined. The main advantage of this approach over the usual absorption spectroscopy is its high sensitivity. The OG effect in plasmas, glow discharges, hf discharges, hollow cathodes, obstructed discharges, neutral gases, etc., is studied. Optogalvanic studies of the spectra of both the ground and excited states of atoms and vibrational-rotational and electronic transitions in molecules, nonlinear spectroscopic phenomena, and interference of degenerate states and the use of the optogalvanic effect for stabilization of laser frequencies are described. A great deal of attention is given to the physical mechanisms involved in the formation of the OG signal. The possibilities for employing the optogalvanic effect in quantitative spectroscopy are evaluated.

PACS: 52.70.Kz, 52.80.Hc, 33.20.Vq, 52.80.Pi, 32.80.Rm (all)
DOI: 10.1070/PU1986v029n03ABEH003187
URL: https://ufn.ru/en/articles/1986/3/c/
Citation: Ochkin V N, Preobrazhenskii N G, Sobolev N N, Shaparev N Ya "Optogalvanic effect in plasmas and gases" Sov. Phys. Usp. 29 260–280 (1986)

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Оригинал: Очкин В Н, Преображенский Н Г, Соболев Н Н, Шапарев Н Я «Оптогальванический эффект в плазме и газе» УФН 148 473–507 (1986); DOI: 10.3367/UFNr.0148.198603c.0473

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