Abstract
The mechanisms for formation of population inversions in plasma jets of lithium, sodium, cadmium, and strontium vapor are studied. The primary contribution to forming a population inversion over the transitions of the alkali atoms is found to be three-body electron-ion recombination, and for transitions between the ion levels of strontium and cadmium, inelastic collisions with the buffer gas play an important role. Using helium instead of argon as a buffer leads to a substantial increase in the magnitude of the inversion.
References
S. P. Bogacheva, M. F. Veresh, I. P. Zapesochnyyi et al., Ukr. Fiz. Zh. 30, 186 (1995).
S. P. Bogacheva, L. V. Voronyuk, I. P. Zapesochnyyi et al., Zh. Prikl. Mekh. Tekh. Fiz., No. 6, 10 (1984).
M. F. Veresh, I. P. Zapesochnyi, and V. P. Starodub, Zh. Tekh. Fiz. 57, 572 (1987) [Sov. Phys. Tech. Phys. 32, 347 (1987)].
A. A. Borovik, I. S. Aleksakhin, V. F. Bratsov, and A. B. Kuplyauskene, Opt. Spektrosk. 53, 976 (1982) [Opt. Spectrosc. (USSR) 53, 583 (1982)].
B. M. Smirnov, Excited Atoms [in Russian], Énergoizdat, Moscow (1982), 232 pp.
V. N. Kondrat’ev and E. E. Nikitin, Kinetics and Mechanism of Gas-Phase Reactions [in Russian], Nauka, Moscow (1975), 397 pp.
B. M. Smirnov, Asymptotic Methods in Collision Theory [in Russian], Atomizdat, Moscow (1973), 294 pp.
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Zh. Tekh. Fiz. 68, 134–135 (June 1998)
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Starodub, V.P. Mechanisms for formation of a population inversion in the levels of metal atoms and ions in a plasma jet. Tech. Phys. 43, 735–736 (1998). https://doi.org/10.1134/1.1259063
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DOI: https://doi.org/10.1134/1.1259063