Target dependence of charge exchange X-rays

This paper describes our finding that in slow collisions of Kr27+ projectiles with neutral Ne, Ar and O2 atoms/molecules there is a significant target dependence in the spectra of X-rays originating from electron capture. We also present results of a classical trajectory Monte-Carlo (CTMC) calculation that quantifies the different initial electronic state (n,l) distributions of the captured electrons for these three target gasses.