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TENTATIVE EXPLANATION OF SELECTIVE POPULATION OF THE 2p1 LEVEL OF NEON ATOMS IN THE CASE OF M - EFFECT IN NEON+ HYDROGEN AND NEON+OXYGEN GAS MIXTURES

G. Musa1,* , L. C. Ciobotaru1

Affiliation

  1. National Institute R&D for Laser, Plasma and Radiation Physics, PO Box MG 36, 077125 Bucharest, Romania

Abstract

In electropozitive-electronegative gas mixtures discharges, the selective population of a certain level has been previously observed, this process being called the M-effect. This behaviour was explained by ion-ion recombination. However, the selective population of a certain level was not explained before. In this paper, we report on a tentative explanation of the selectivity as being due to energy resonant recombination process of a three body collision between negative and positive ions and a metastable electronegative atom. Comparisons of the spectra of Ne+H2 and Ne+O2 with the spectrum of pure neon are presented as an example. A single strongly enhanced line was observed in the spectra of the two gas mixtures. The energy defect of the reaction was calculated to be less than – 0.2 eV. Various other gas mixtures containing electronegative and electropositive atoms are expected to give rise to the M –effect..

Keywords

M-effect, Selective light emission, Gas mixture discharge.

Submitted at: July 13, 2004
Accepted at: Dec. 6, 2004

Citation

G. Musa, L. C. Ciobotaru, TENTATIVE EXPLANATION OF SELECTIVE POPULATION OF THE 2p1 LEVEL OF NEON ATOMS IN THE CASE OF M - EFFECT IN NEON+ HYDROGEN AND NEON+OXYGEN GAS MIXTURES, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 4, pp. 1339-1344 (2004)