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Proceedings Paper

Kinetics of CO first negative system excitation by ionized radiation
Author(s): M. U. Khasenov
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Paper Abstract

Investigation of the possibility of the quasicontinuous UV carbon monoxide first negative system laser development is interesting with the fact that quantum efficiency for 0-0 transition (λ = 219 nm) is 13.3%. H2, D2, Kr have high values of the deactivation rate constants of X2 Σ+ level. So the possibility of quasicontinuous laser on B-X transition of CO+ is determined by the ratio of the upper and lower laser levels quenching rates of H2, D2 molecules, Kr atoms. In the present work the luminescence spectra of gas mixtures with carbon monoxide under α-particle excitation are investigated. CO+ (B) quenching rate constants are obtained from dependence of the CO first negative system intensity on gases partial pressure in He+CO+H2 (D2, Kr) mixtures. At the analysis of experimental dates the population of the upper level during He2+-CO charge exchange was taken into account. Efficiency of B2 Σ+u, v=0 level population was defined by the ratio of the intensities of 1- system of N2 and Baldet-Johnson system in He-N2 and He-CO mixtures. The upper limit for the CO+ (B) quenching rate constant in collisions with H2(D2, Kr) is estimated as: kq<10-10 cm3 s-1. The results indicate the possibility of the efficient quasicontinuous laser action on the carbon monoxide first negative system in UV spectral region under ionized radiation source pumping.

Paper Details

Date Published: 3 May 2004
PDF: 10 pages
Proc. SPIE 5483, Atomic and Molecular Pulsed Lasers V, (3 May 2004); doi: 10.1117/12.562951
Show Author Affiliations
M. U. Khasenov, Engineering Ctr. for Laser Technologies (Kazakhstan)

Published in SPIE Proceedings Vol. 5483:
Atomic and Molecular Pulsed Lasers V
Victor F. Tarasenko, Editor(s)

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