QUANTUM DESCRIPTION OF HIGH-FREQUENCY RAMAN-SCATTERING FROM PAIRS OF ARGON ATOMS

The quantum theory is applied for the accurate computation of high-fre quency (up to 400 cm(-1)) spectral intensities in Ar-Ar collision-indu ced light scattering (CILs) processes at room temperature. Numerically , this becomes possible by means of the two-point Fox-Goodwin integrat or, propagating on a grid the ratio of the wavefunction at adjacent po ints. Wavefunctions are normalized in a handy way which is based on th e notion of the local wavenumber. Various potentials and anisotropy mo dels are tested and compared. For frequencies exceeding 200 cm(-1) our results show significant deviations as compared to the theoretical pr edictions of the classical theory. When the self-consistent field (SCF ) anisotropy is applied, a clear tendency of the quantum calculation t o approach recent experimental data is observed.