One-dimensional modeling of the gain and temperature in a supersonic chemical oxygen-iodine laser with transonic injection of iodine

Author

Bruins, E. ; Furman, D. ; Rybalkin, V. ; Barmashenko, B.D. ; Rosenwaks, S.

Author_Institution

Dept. of Phys., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel

Volume

38

Issue

4

fYear

2002

fDate

4/1/2002 12:00:00 AM

Firstpage

345

Lastpage

352

Abstract

A simple 1-D model is developed for the fluid dynamics and chemical kinetics in the chemical oxygen iodine laser (COIL). Two different I₂ dissociation mechanisms are tested against the performance of a COIL device in our laboratory. The two dissociation mechanisms chosen are the celebrated mechanism of Heidner (1983) and the newly suggested mechanism of Heaven (2001). The gain calculated using Heaven´s dissociation mechanism is much lower than the measured one. Employing Heidner´s mechanism, a surprisingly good agreement is obtained between the measured and calculated gain and temperature over a wide range of the flow parameters. Other predictions of the model (larger mixing efficiency and higher temperature with a leak opened downstream of the resonator and gain decrease along the flow) are also in agreement with the experimental observations

Keywords

chemical lasers; chemically reactive flow; dissociation; iodine; laser theory; oxygen; supersonic flow; transonic flow; COIL; I₂; I₂ dissociation mechanisms; O₂-I; chemical kinetics; downstream leak; flow parameters; fluid dynamics; gain; iodine transonic injection; larger mixing efficiency; one-dimensional modeling; resonator; simple 1-D model; supersonic chemical oxygen-iodine laser; temperature; Chemical lasers; Fluid dynamics; Fluid flow measurement; Gain measurement; Kinetic theory; Laboratories; Laser modes; Predictive models; Temperature distribution; Testing;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.992547

Filename

992547