K-Shell Ionization of Neutral Targets by Electron Impact

The electron impact K-shell ionization cross sections (EIKICS) are needed in diverse fields, such as plasma-, radiation-, astro-physics. For plasma modeling the demand of EIKICS is enormous; this can only be fulfilled by simple analytical or semi-classical models that can generate efficiently accurate results over broad ranges of projectile energies and target species. We modified the Deutsch-Mark [1] model by incorporating ionic and relativistic corrections and applied to evaluate K-shell ionization cross sections for 30 atomic targets, 1$<$Z$<$92 for 1$<$E$<$2 GeV with very encouraging results as compared to available experimental findings. Work is supported by NSF, CREST project.\\[0pt] [1] H. Deutsch, P. Scheier, K. Becker, T. D. Mark, Int. J of Mass Spectrom, 233, 13 (2004).