Investigation of multiphoton-excited molecules by the method of Raman scattering spectroscopy at an overtone and compound vibrational frequencies

The multiphoton-excited CF₃Br molecules are investigated by the method of Raman light scattering spectroscopy at frequencies of overtones and compound vibrations. It is demonstrated that highly nonequilibrium energy distribution of molecules is formed under excitation. The physical parameters characterizing this distribution, including the part of excited molecules and their average excitation level, are determined. The pattern of vibrational energy distribution formed in the CF₃Br molecules under multiphoton excitation is reconstructed.