Excitation and emission of argon behind the front of shock waves at speeds of 4.5 7.8 km/s. II Analisys of experimental results

In this paper the analysis of experimental data concerning pure argon radiation behind strong shock wave [1] are presented. These results were obtained in the range of shock wave velocities 4.5 7.8 km/s and pressures ahead of the wave front 1Torr. The estimation of electron concentration at which avalanche increase in radiation intensity take place is given on the base of simple argon atom model. The estimation of the electronic states population temperature was done using the argon excitation level concentrations data and assumption of their Boltzmann distribution. The presented estimations are shown that electronic states population temperature are significantly differ from the temperature of the gas behind shock wave front. The discussion concerning initial radiation step is presented.