Determination of gas and electron temperatures for a powerful MIR He-SrBr2 laser excited in nanosecond pulsed longitudinal discharge

K. A. Temelkov; S. I. Slaveeva; N. K. Vuchkov; L. Lyutov; N. V. Sabotinov

doi:10.1117/12.877518

15 November 2010 Determination of gas and electron temperatures for a powerful MIR He-SrBr₂ laser excited in nanosecond pulsed longitudinal discharge

K. A. Temelkov, S. I. Slaveeva, N. K. Vuchkov, L. Lyutov, N. V. Sabotinov

Author Affiliations +

Proceedings Volume 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 77510P (2010) https://doi.org/10.1117/12.877518
Event: 18th International Symposium on Gas Flow and Chemical Lasers and High Power Lasers, 2010, Sofia, Bulgaria

Abstract

Using a gas discharge tube typical for the middle infrared He-SrBr₂ laser, a study on gas and electron temperatures of nanosecond pulsed longitudinal discharge in pure He, as well as with Ne admixture, is carried out. Thermal conductivities of Ne-He binary gas systems are obtained on the base of experimental data fit, rigid sphere and 12-6 Lennard-Jones inter-atomic interaction approximations. Assuming that the gas temperature varies only in the radial direction and using the calculated thermal conductivities, analytical solution of the steady-state heat conduction equation is found for uniform power input. Measurement of the relative intensities of some He and Ne spectral lines, originating from different upper levels has enabled us to determine the average electron temperature.

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K. A. Temelkov, S. I. Slaveeva, N. K. Vuchkov, L. Lyutov, and N. V. Sabotinov "Determination of gas and electron temperatures for a powerful MIR He-SrBr₂ laser excited in nanosecond pulsed longitudinal discharge", Proc. SPIE 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 77510P (15 November 2010); https://doi.org/10.1117/12.877518

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