Diagnostic studies of Ben-Gurion University high efficiency supersonic COIL

S. Rosenwaks, V. Rybalkin, A. Katz, B. D. Barmashenko

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

We report on a detailed diagnostic study of the extremely efficient supersonic chemical oxygen-iodine laser (COIL) recently developed in our laboratory (Appl. Phys. Lett., 85, 5851 (2004)). 40.0% efficiency was measured for 1 s at the early stage of operation, followed by a sustained 35.5% chemical efficiency for 20 s. The power and spatial distributions of the gain and temperature across the flow were measured for different supersonic nozzles with both staggered and non-staggered iodine injection holes, different injection locations along the flow and nozzle throat-heights. 0.73 yield of singlet oxygen was obtained for conditions corresponding to the highest efficiency. The effects of the partial pressure of O2 and the residence time of the flow in the generator, as well as the heating of the nozzle, are shown to be crucial in attaining this high efficiency.

Original languageEnglish
Title of host publication36th AIAA Plasmadynamics and Lasers Conference
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781624100604
DOIs
StatePublished - 1 Jan 2005
Event36th AIAA Plasmadynamics and Lasers Conference - Toronto, ON, Canada
Duration: 6 Jun 20059 Jun 2005

Publication series

Name36th AIAA Plasmadynamics and Lasers Conference

Conference

Conference36th AIAA Plasmadynamics and Lasers Conference
Country/TerritoryCanada
CityToronto, ON
Period6/06/059/06/05

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