Accession Number : AD0751858

Title :   CS2/O2 Chemical Lasers: Chemistry and Performance Characteristics,

Corporate Author : DEFENCE RESEARCH ESTABLISHMENT VALCARTIER QUEBEC

Personal Author(s) : Suart,R. D. ; Dawson,P. H. ; Kimbell,G. H.

Report Date : 20 SEP 1971

Pagination or Media Count : 12

Abstract : Experimental results from the CS2/O2 chemical laser system using both a flash photolysis initiated pulsed laser and a microwave discharge initiated continuous-wave laser were examined by computer simulation techniques. The comparisons between predicted and observed laser performance led to some conclusions concerning the chemical mechanisms operative in the laser. In particular, the laser pumping step is O + CS to CO* + S followed by the chain carrying step S + O2 to SO + O which must be rapid. The oxygen atom consuming reaction, O + NO2 to NO + O2, competes too strongly with the other reaction steps for the photolysis of NO2 to be effective as a power improving technique in the flash photolysis laser. The cw laser operates on totally inverted vibrational level populations when cold CO is added to the reacton mixture. Some evidence was found to suggest that excess O2 molecules may act as a vibrational energy sink in the cw system. (Author)

Descriptors :   (*GAS LASERS, *CARBON MONOXIDE), (*SULFIDES, *PHOTOLYSIS), OXYGEN, CARBON COMPOUNDS, GAS DISCHARGES, REACTION KINETICS, ATOMS, EXCITATION, MOLECULAR ENERGY LEVELS, SIMULATION, GAS FLOW, MIXTURES, NITROGEN OXIDES, CANADA

Subject Categories : Lasers and Masers
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE