Ionization transparency of the gas induced by resonant laser influence

The problem of the gas ionization in the field of resonant laser radiation taking into account the radiation transfer is numerically solved. The free electrons are formed due to the mechanism of associative ionization. These electrons then collect energy through superelastic processes and initiate the avalanche ionization of the medium by electronic impact. An influence of resonant radiation transfer on kinetics of plasma formation on resonance transition of sodium atom with wavelength 589,6 nm is investigated.