Abstract
A theoretical investigation of the non-stationary Raman scattering (RS) of light in gas atoms with no nuclear spin has been made. Account was taken of the level degeneracy due to the different orientation of the total angular momenta, the dependence of the RS signal on the polarisations of the light pulses and of the elastic depolarising collisions. Interesting RS polarisation properties have been found and assumed as a basis method for the identification of optically forbidden transitions and for the determination of parameters of the cubic susceptibility tensor. It has been proved that the polarisation properties and damping law of the non-stationary RS signal permit multipole relaxation rates of forbidden and allowed atomic transitions to be determined.
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