The generalized theory of forbidden Raman scattering processes is developed in terms of the multipole expansion of the electromagnetic interaction Hamiltonian. Using the general expressions, the theory of electric dipolendash;magnetic dipole (E1ndash;M1) Raman scattering is derived in detail. The1S0rarr;3P1E1ndash;M1 Raman scattering cross section in atomic magnesium is calculated for two applicable laser wavelengths using published fhyphen;value data. Since resonantly enhanced cross sections larger than 10minus;29cm2/sr are predicted it should be possible to experimentally observe this scattering phenomenon. In addition, by measuring the frequency dependence of the cross section near resonance, it may be possible to directly determine the relative magnitudes of the Asdot;p and Asdot;A contributions to the scattering cross section. Finally, possible applications of the effect in atomic and molecular physics are discussed.
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