Abstract
The Fisher-Laubereau translational collision theory of vibrational dephasing has been translated into the language of spontaneous Raman spectroscopy. Theoretical prescriptions for calculating the vibrational correlation function ˆG
vib(t), vibrational second moment M
2(vib), a molecular oscillator's angular frequency correlation function ˆG
ω(t) = <ω(t)ω(0)>/<ω2(0)> and the corresponding correlation time have been found. Numerical results for the C-I stretching (v
3 = 525 cm-1) normal mode of methyl iodide are presented. The paper concludes with several remarks concerning verification of this model on the basis of Raman experiments.