SPECTRALLY SELECTIVE TIME-RESOLVED ACTINOMETRY OF VUV RADIATION OF A MOVING GAS-DYNAMIC DISCONTINUITY

The experimental data on the radiation emission ability of a strong mo ving supersonic gas-dynamic discontinuity are presented. The intensity of radiation was defined by measuring the velocity of the bleaching w ave in xenon difluoride driven by the discontinuity radiation. For the spectral range of 130 - 170 nm, the discontinuity-radiation intensity in krypton is equal to the radiation intensity of a black-body radiat or at a temperature of about 20 kK. In the optical cavity consisting o f two plane-parallel mirrors, a pulse of coherent radiation was obtain ed at a wavelength of 353 nm. The pulse energy reached 10(3) J.