Collisions between (excited) hydrogen atoms and beryllium impurity ions are expected to occur inside fusion reactors and the cross sections of all inelastic processes are then needed. A comparative study of H(2s) and H(2p) targets in collision with Be⁴⁺ ions at fusion-relevant energies is presented.

Abstract

A computational study of Be⁴⁺+H(2s, 2p) collisions has been carried out employing the Classical Trajectory Monte Carlo (CTMC) method for the impact energy range from 20 keV/u to 1000 keV/u. The integral n partial cross sections for H(n) excitation and Be³⁺(n) electron capture and, the total ionization and electron capture cross sections are calculated and compared to recent semiclassical results. A general good agreement is observed for the n partial and total electron capture and ionization cross sections. The comparative study of the three inelastic processes show no significant differences between both excited targets.