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Time-dependent analysis of an N2O gasdynamic laser

Reddy, KPJ (1989) Time-dependent analysis of an N2O gasdynamic laser. In: AIAA Journal, 27 (10). pp. 1387-1391.

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Official URL: http://www.aiaa.org/content.cfm?pageid=406&gTable=...

Abstract

A simplified two-temperature model is presented for the vibrational energy levels of the N2O and N2 molecules of an N2O-N2-He gasdynamic laser (GDL), and the governing equations for the unsteady flow of the gas mixture in a convergent-divergent contour nozzle are solved using a time-dependent numerical technique. Final steady-state distributions are obtained for vibrational temperatures, population inversion, and the small-signal laser gain along the nozzle. It is demonstrated that, for plenum temperatures lower than 1200 K, an N2O GDL such as the present is more efficient than a CO2 GDL in identical operating conditions

Item Type: Journal Article
Additional Information: Copyright of this article belongs to American Institute of Aeronautics and Astronautics.
Keywords: gasdynamic lasers;nitrogen lasers;nitrous oxides;temporal distribution;vibrational spectra;conservation laws;convergent-divergent nozzles;laser outputs;molecular energy levels;population inversion.
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering (Formerly, Aeronautical Engineering)
Date Deposited: 05 Aug 2010 05:50
Last Modified: 05 Aug 2010 05:50
URI: http://eprints.iisc.ernet.in/id/eprint/31138

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