A general kinetic theory of intercollisional interference effects has been developed. Applied to collision-induced light scattering in rare gases, it predicts a peak at the incident frequency, with a height of about 25% of the intracollisional peak and a width proportional to the density.

• Received 8 December 1969

DOI:https://doi.org/10.1103/PhysRevLett.24.802