An overview of projectile-charge-state dependence of K-, L-, and M-shell ionization in thin solid targets for a variety of incident heavy ions from 0.1 to 5.7 MeV/u

Abstract

This report summarizes briefly most of the experiments that have been done to study the charge state dependence of inner-shell ionization for the K-, L-, and M-shells in thin solid targets. A study of the charge state dependence under approximate single collision conditions can provide information about the electron capture (EC) contribution to inner-shell ionization. The EC process is expected to be more profound at ion velocities, v 1 ≤ v 2s and for Z 1 ≤ Z 2 where Z 1 and Z 2 are the atomic numbers of the projectile and the target atom, and v 1 and v 2s are the velocities of the projectile ion and the target inner-shell electron, respectively. Extended data from our own laboratory over a fairly large time span as well as a variety of papers in the open literature on similar studies for selected projectiles from Z 1 = 5 to 17 are summarized for incident ions in the range 0.1 to 5.7 MeV/u. The data will be compared to current Coulomb ionization theories.