ABSTRACT
A medium is known as homogeneous if all its statistically averaged parameters are independent of the coordinates. Light scattering in sufficiently rarified gases is characterized by independent scattering by different volumes or, it may be assumed, by different molecules. The scattering at different points of the dense gases and condensed media cannot be regarded as independent, particularly when we analyse the spectral composition of the scattered light. The result describes the scattering of longitudinal Langmuir waves, giving rise to transverse waves. But it proves to be even more general in character, and is applicable, for instance, to the scattering of longitudinal Langmuir waves producing also Langmuir waves. Transition scattering in plasmas makes a significant contribution to a number of effects associated with stimulated scattering and nonlinearities. The significant fact is that the emission and scattering can occur along the entire trajectory of the particle without considerably changing the character of its motion.
