The influence of (n-n′)-mixing processes in He*(n)+He(1s2) collisions on He*(n) atoms' populations in weakly ionized helium plasmas

The results of semi-classical calculations of rate coefficients of (n-n′)-mixing processes due to collisions of Rydberg atoms He*(n) with He(1s2) atoms are presented. It is assumed that these processes are caused by the resonant energy exchange within the electron component of He*(n)+He collision system. The method is realized through the numerical simulation of the (n-n′)-mixing processes, and is applied for calculations of the corresponding rate coefficients. The calculations are performed for the principal quantum numbers n,n′ in ranges 4⩽n