Transition rates between fine structure components in he and He-like ions during collisions with protons

The transition rates between fine structure components of triplet levels with n = 2, 3 in He and He-like ions during collision with protons are considered. The problem specificity is the existence of a virtual level connected to multiplet components by dipole-allowed transitions. As a result, a broad peak appears in the dependence of the transition rate on the plasma temperature. Calculations for transitions were performed within the 2 3 P, 3 3 P, and 3 3 D terms in He, C 4+ and Fe 24+ .