Vibrational Raman effect

In the normal vibrational Raman effect it has been traditionally assumed that the scattering tensor is symmetric ( p = ffap). However, even in 92 Placzek (5) considered the consequences of antisymmetric contributions, which he termed magnetic-dipole scattering because of the agreement between the selection rules for an antisymmetric Raman process and for a magnetic-dipole transition. Placzek gave the expected value of the depolarisation ratio, p i = Ij /I = > for purely antisymmetric scat-... 

In the simple classical theory of the vibrational Raman effect [1] the electric vector is taken as the real expression... 

A classical description of the vibrational Raman effect (which was the main process studied before the introduction of lasers) has been developed by Placek [8.8]. It starts from the relation... 

While the vibrational Raman effect has the same selection rule as the IR transitions, different rules apply for the rotational Raman effect (compare with the classical picture )... 

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