26 March 2002 Quasi two-dimensional model of large-bore Cu lasers
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Proceedings Volume 4747, International Conference on Atomic and Molecular Pulsed Lasers IV; (2002) https://doi.org/10.1117/12.460111
Event: International Conference on Atomic and Molecular Pulsed Lasers IV, 2001, Tomsk, Russian Federation
Abstract
Quasi two-dimensional (r,z) model of large bore copper vapor laser (CVL) was developed. Full set of heat and species (charged and neutral) transfer equations, Maxwell equations and electron energy balance equation were solved for different pulse repetition rate in a temporally self- consistent manner, with the long term evolution of plasma kinetics followed over multiple excitation/afterglow cycles. Electron rate constants were for the first time taken from the realistic EEDF, which was the result of solving Boltzmann equation in two-term approximation with charged particle collisions taken into account. Laser radiation power was calculated together with external circuits (several magnetic switches are included) self-consistently. Our model includes the plasma-chemical and neutral kinetic processes in Cu/Ne/H2/HCl mixtures. Two-dimensional thermal radiation transfer was taken into account for the first time. The influence of skin-effect and H2/HCl additives on CVL characteristics was studied. Detailed hydrogen rotational and vibrational kinetics taken into account in a CVL model allows us to explain experimental results: radial redistribution of laser power, wall temperature increase, prepulse electron temperature and concentration decrease with hydrogen. The model was used for designing new laser system. After that this laser was constructed and gives first results lately. The laser shows good agreement with predictions, in already realized pure Cu mode (without any admixtures) it gives 105 W, whereas the prediction was 117 W.
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V. V. Ivanov, V. V. Ivanov, Konstantin Klopovsky, Konstantin Klopovsky, Yuri A. Mankelevich, Yuri A. Mankelevich, Sergei A. Motovilov, Sergei A. Motovilov, N. A. Popov, N. A. Popov, O. V. Proshina, O. V. Proshina, T. V. Rakhimova, T. V. Rakhimova, Nikolay V. Suetin, Nikolay V. Suetin, A. A. Yudin, A. A. Yudin, Boris P. Yatsenko, Boris P. Yatsenko, } "Quasi two-dimensional model of large-bore Cu lasers", Proc. SPIE 4747, International Conference on Atomic and Molecular Pulsed Lasers IV, (26 March 2002); doi: 10.1117/12.460111; https://doi.org/10.1117/12.460111
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