Yg. Mu et al., Charge-state dependence of stopping power for light ions penetrating thin carbon foils at low velocity, NUCL INST B, 164, 2000, pp. 272-278
In this work. an attempt to interpret the charge-state-dependent stopping o
f slow ions using quantum mechanical scattering: theory was made. The elect
ronic stopping of differently charged ions (0 less than or equal to q less
than or equal to Z(1)) was calculated using the nonlinear density-functiona
l description for the interaction of the ions with the electron gas of the
target. Our simulated charge-state-dependent energy loss was compared with
experimental data. For heavy ions such as argon, a higher stopping was obta
ined in the theoretical prediction for highly ionized argon ions (q > 7), T
his indicates that a relaxation of the ion charge-state during the passage
through thin foils has to be considered for heavy ions. (C) 2000 Elsevier S
cience B.V. All rights reserved.