M. Braglia et P. Minari, ON THE RELAXATION OF THE ENERGY-DISTRIBUTION FUNCTION OF LIGHT PARTICLES IN HEAVY GASES, Contributions to Plasma Physics, 34(6), 1994, pp. 711-724
A stochastic approach to the thermalization problem of tight particles
in heavy gases is discussed which presents a number of advantages wit
h respect to more conventional techniques. The procedure is used to st
udy the relaxation of the distribution Function in cold gases in two s
ituations in which: i) only first order terms are retained and ii) sec
ond order terms are also included, with respect to the ratio m/M betwe
en light-particle mass m and atomic mass M.