A model for investigating the spectrum and kinetics of infrared excitation of three-atom molecules

A model is proposed for investigating the spectrum and kinetics of cascade excitation of curves, three-atom molecules by a powerful infrared (IR) pulse. The effect of the resonance anharmonic interaction on the position of the oscillatory levels of $O_3$ is analyzed and the results of the calculation are compared with the experimental data. Based on the calculated spectroscopic information about the channels and cross sections of the cascade IR excitation, the kinetics of the ropulations of the lower oscillatory levels of the $O_3$ molecules are modeled.