This article is cited in 6 papers

Active media. Lasers

Generation of singlet oxygen for an oxygen–iodine laser in a radio-frequency discharge

O. V. Braginskii, A. N. Vasil'eva, K. S. Klopovskii, A. S. Kovalev, D. V. Lopaev, Yu. A. Mankelevich, N. A. Popov, A. T. Rakhimov, T. V. Rakhimova

Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University

Abstract: The generation of singlet oxygen (SO) in a radio-frequency discharge (13.56 MHz) in the gas flow was investigated experimentally and theoretically. The oxygen pressure was varied from 2 to 20 Torr and the energy deposition in gas from 10 to 2000 J mmol^-1. The saturation of the SO concentration with increasing the energy deposition was shown to arise from the three-body process of SO quenching by atomic oxygen. Removing atomic oxygen allowed a 2.5-fold increase in the ultimate SO concentration at the discharge output. For an oxygen pressure of 15 Torr, the SO fraction amounts to 10%.

PACS: 42.55.Lt

Received: 13.09.2004

 English version: Quantum Electronics, 2005, 35:1, 21–26

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