Differential and total cross sections for single electron loss
were measured for Kr+ ions on gaseous media in the energy
range of 1.0 to 5.0 keV. The single electron loss cross
sections for all the targets studied are found to be in the
order of magnitude between 10-22 and 10-20 cm2,
and show a rapid monotonically increasing behaviour as a
function of the incident energy; no remarkable differences in
the energy dependence of σ12 were found for any atom
studied. The single electron loss cross sections show a weaker
Zt dependence in the large Zt region than that given by
the Bohr formula. A striking feature of the results is the
experimental evidence of saturation in the single electron loss
cross section as the nuclear charge of the target increases.
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