Abstract

Resonant scattering of am intense beam of radiation by an arbitrary number of atoms contained in a volume whose dimensions are small as compared to the radiation wavelength is studied. It is seen that the scattered radiation is an equally spaced triplet whose middle frequency is equal to the incident frequency. Counting rates exact to all orders in incident intensity are obtained. Special cases of (i) atoms in ground state, (ii) atoms in excited state, (iii) assembly of atoms in super-radiant state, and (iv) assembly of atoms in thermal equlibrium are studied.

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