Abstract
An experimental investigation was made of initiation of a nonself-sustained bulk discharge with a plasma cathode in the active medium of a CO/sub 2/ laser of 480 cm/sup 3/ volume at pressures up to 0.5 atm. A combined preionization system, consisting of a plasma cathode resulting from a sheet discharge and a circuit for generating a short self-sustained bulk discharge, ensured an initial electron density of 2 x 10/sup 13/ cm/sup -3/. The nonself-sustained energy deposition in the active medium reached 340 Jxliter/sup -1/xatm/sup -1/, the output radiation energy was 48 Jxliter/sup -1/xatm/sup -1/, the efficiency was 15%, and the gain was 0.033 cm/sup -1/.
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