Interaction of laser radiation with matter. Laser plasma
Physical mechanism of suppression of the emission of radiation by atmospheric gases in a plasma formed as a result of two-pulse irradiation of the surface
Abstract:
Suppression of the emission of radiation of atmospheric gases in a laser plasma formed as a result of two-pulse irradiation of a target surface was due to a reduction in the gas density in the region of the interaction of the radiation with the surface. In accordance with this mechanism the first pulse performed the function of a vacuum pump and also generated a cloud of target particles, which increased the contrast of the spectral lines of the elements in the target as a result of breakdown in the field of the second pulse.
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