Stimulated Compton scattering in a plasma. II

A previous study of the self-consistent kinetics of a closed system constituted by interacting gases of electrons and photons is developed further. The existence of a low frequency region where the evolution of the radiation spectrum always leads to a Bose condensation is pointed out. This condensation is described. Then the asymptotic behaviour of the interaction, where the linear induced term in the photon kinetic equation (related to Tsub(e)) becomes dominant is studied. A 'blue diffusion', which leads finally to 'local stationary solutions' in the high frequency region is pointed out: then a sequence of Bose Einstein distributions with a negative chemical potential, defined on high frequency intervals and identified with these local solutions, is believed to lead to the final equilibrium state of the system. The interest of such 'negative μ-B.E.D.' in UV or X-ray astronomy is pointed out. (Auth.)