Kinetics deactivation model of О2 ( а 1D)

To improve the performance of electric oxygen-iodine laser it is necessary to increase the pressure of the O 2 in the output of electric singlet oxygen O 2( a 1D) generator. The mechanism of O 2( a 1D) deactivation under high oxygen pressures is not entirely clear. In this paper it is shown that vibrationally-excited ozone O 3( υ ), formed in the three-body recombination process O + O 2 + M ® O 3( υ ) + M, plays an important role in deactivation of singlet oxygen in O-O 2-O 3 gas mixtures. The main channel of O 2( a 1D) deactivation in post-discharge zone is process O 3( υ ³2) + O 2( a 1D) ® 2O 2 + O. If no action is taken to reduce the concentration of oxygen atoms, the contribution of this process to the overall removal rate of singlet oxygen will be significant even in the discharge zone.