Near-resonant Rayleigh scattering

J. L. Carlsten and A. Szoke. Spectral resolution of near-resonant Rayleigh scattering and collision induced resonance fluorescence. Phys. Rev. Lett., 56 667-671 (1976). 

Figure 17.2.7 Schematic views of Raman scattering. Excitation (E) to a nonstationary virtual state is followed by Rayleigh scattering (R ) with no change in energy, or Raman scattering (R and R2) with energy changes equal to vibrational quanta, (a) The normal Raman effect involves excitation in a nonabsorbing region, (b) The resonance Raman effect involves excitation very near an allowed absorption transition.

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