Analysis of possibility of vacuum ultraviolet radiation amplification in a helium plasma

Consideration is given to the possibilities of plasma laser development on the basis of photodissociative transition of helium molecule into the ground spreading state (815 A), at the pumping by electron beam and in the post-luminescence of laser break-down. The analysis is given on the basis of numerical calculations of the self-consistent relaxation model of a helium plasma. The model describes the time change of following parameters: atomic and molecular level population, electron and ion temperature, atomic and molecular ion concentration. It is shown, that in the case of electron beam pumping, amplification coefficient necessary for generating, may be obtained at the beam parameters, which are at the limit of present-day possibilities. The requirements are not so strict for the laser pumping