Vibrational kinetics of the ozone molecule in binary mixtures with noble gases

The vibrational translational relaxation time of 001 state of ozone in binary mixtures with noble gases (He, Ne, Ar, Kr, Xe) was measured from the phase shift of the photoacoustic signal relative to the amplitude-modulated radiation of the CO2 laser used for excitation of O-3. A three-level kinetic model of O-3 is used to fit the experimental and calculational data of the phase shift and to determine the vibrational relaxation rate coefficients. The vibrational relaxation rate constants for 001 state were obtained corresponding to the de-excitation by the direct way up to 000 state and in two steps through the 010 state. Dependences of the relaxation rate constants on molecular mass and polarizability of buffer gas are presented. Estimates of vibrational relaxation rate constants in the Landau-Teller approximation for various molecular masses and polarizabilities of buffer gas were performed.