Target nuclear charge dependence of double ionization of two-electron ions by MeV protons

28 September 1990

journal article
Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics

Vol. 23 (18) , 3131-3137
https://doi.org/10.1088/0953-4075/23/18/016

Abstract

The authors have calculated single and double ionization cross sections in the first Born approximation for two-electron ions of varying nuclear charge, Z_N. Electron correlation is essential to this process, and the target nuclear charge scaling is used to study this correlation. As Z_N is increased the single ionization cross section is found to scale as Z_N^-4 and the double ionization as Z_N^-6, in agreement with simple analytical predictions based on a perturbative treatment of the electron-electron interaction.

Keywords

This publication has 7 references indexed in Scilit:

First Born calculations of double ionisation of helium by bare-ion projectiles: contributions from d orbitals
Journal of Physics B: Atomic, Molecular and Optical Physics, 1988
The forced impulse method applied to the double ionisation of helium by collision with high-energy protons, antiprotons and alpha particles
Journal of Physics B: Atomic and Molecular Physics, 1987
Double ionization of helium by protons and antiprotons in the energy range 0.30 to 40 MeV
Physical Review Letters, 1987
Multiple-vacancy production in the independent-Fermi-particle model
Physical Review A, 1984
$K$ -shell-hole production, multiple-hole production, charge transfer, and antisymmetry
Physical Review A, 1980
$K$ -shell hole production by light ions in the region $η^{\frac{1}{2}} ≲ 1$
Physical Review A, 1977
$\frac{1}{Z}$ expansion study of the ${(1 s)}^{2} 2 s {}^{2}S$ and ${(1 s)}^{2} 2 p {}^{2}P$ states of the lithium isoelectronic sequence
Physical Review A, 1974