This work was partially supported by the National Aeronautics and Space Administration under Grant No. NAG 1577.
Physical Review A
Ionization phenomena, Photoelectricity, Wave functions, Nuclear shell theory
A comparative study of three decent theoretical formalisms by Anholt, Scofield, Becker, and coworkers (1978-85) for K-shell ionization by highly relativistic protons has been carried out. The importance of the spin-flip mechanism is emphasized. It is concluded that in the analysis of such inner-shell ionization processes, an accurate description of the projectile-target interaction is of much more significance than the accuracy of the wave functions of the atomic electrons.
Rustgi, M. L., Leung, P. T., & Long, S. T. (1988). Ionization of K-shell electrons by highly relativistic protons. Physical Review A (General Physics), 37(8), 3169-3171.