Effects of translational and rotational nonequilibrium on c-w chemical-laser performance. Technical report

Technical Report · Tue Mar 01 04:00:00 EST 1988

OSTI ID:6973697

Mirels, H

A previous model used to describe continuous-wave (c-w) chemical laser performance is generalized to include rotational as well as translational nonequilibrium. The resultant equations are simplified by the realistic assumption that translational and rotational relaxation rates are fast compared with convection, chemical pumping, and collisional deactivation rates. As a consequence, translational and rotational relaxation rates are in equilibrium with stimulated emission. The resultant system of equations is independent of rotational relaxation. An amplifier solution is presented that predicts saturation effects in accord with experiments. Fabry-Perot oscillator solutions are also presented for a multiline saturated laser and for a partly saturated single-lien laser. These present results provide a base for simplification of numerical codes. It is concluded that a resonable first estimate for c-w chemical laser performance can be obtained by assuming rotational equilibrium and translational nonequilibrium.

• Research Organization: Aerospace Corp., El Segundo, CA (USA). Aerophysics Lab.
• OSTI ID: 6973697
• Report Number(s): AD-A-191425/8/XAB; TR-0086A(2060)-1
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
AMPLIFIERS
CHEMICAL LASERS
COLLISIONS
CONVECTION
DEACTIVATION
DOCUMENT TYPES
ELECTRONIC EQUIPMENT
EMISSION
ENERGY TRANSFER
EQUIPMENT
HEAT TRANSFER
LASERS
MASS TRANSFER
MOTION
OSCILLATORS
PERFORMANCE
PROGRESS REPORT
RELAXATION
ROTATION
SATURATION