Abstract
A numerical investigation is made of the energy characteristics of a pulsed DF--Co/sub 2/ chemical laser. Calculations are made for active mixtures having a high stored chemical energy (2 kJx liter/sup -1/x atm/sup -1/). A study is made of the influence of the following main parameters on the laser characteristics: initiation intensity and duration, initial temperature of the medium, relative concentration of CO/sub 2/ and He, degree of dilution of the mixture with rare gas, and total pressure of the mixture. The maximum useful concentration of D/sub 2/ and F/sub 2/ reagents in the mixture is determined for a given total pressure. It is predicted that efficient stimulated emission from a DF--Co/sub 2/ laser may be excited in principle as a result of an energetic chain-branching process. In this case, the laser efficiency with respect to the reaction-initiating energy may, according to calculations, exceed 10/sup 6/%.
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