Highly-charged particle impact ionization of He

Foster, M.; Madison, D.H.; Peacher, J.L.; Ullrich, J.

doi:10.1088/0953-4075/37/19/002

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Highly-charged particle impact ionization of He

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Ullrich, J.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;

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Citation

Foster, M., Madison, D., Peacher, J., & Ullrich, J. (2004). Highly-charged particle impact ionization of He. Journal of Physics B, 37(19), 3797-3807. doi:10.1088/0953-4075/37/19/002.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-8B3C-F

Abstract

Absolute experimental measurements have been reported for the fully differential cross section (FDCS) for single ionization of helium by 3.6 MeV/u Au^Q+ (Q = 24, 53) ions. These absolute measurements are not in very good agreement with CDW-EIS (Continuum Distorted Wave-Eikonal Initial State) calculations which are normally in excellent agreement with doubly differential cross section measurements. We have recently introduced the 3DW-EIS approach which is a fully quantum mechanical approach. In addition, we have used a Hartree-Fock distorted wave for the outgoing electron instead of approximating the ejected electron as a Coulomb wave with an effective charge. For the case of low energy C⁶⁺ ionization of helium, the 3DW-EIS results were shown to be in better agreement with absolute experimental data than the CDW-EIS approximation. The purpose of this paper is to investigate the validity of the 3DW-EIS model for more highly charged ion.