Abstract
Charge states of heavy ions moving in solids at intermediate velocity (0.2 v 0≲ v ≲ v 0, v 0: Bohr velocity) are investigated. The solid is treated as a non-interacting Fermi gas. The charge fraction of the ion is determined by the equilibrium charge state value, in which the velocity-dependent lifetime broadening due to both the interaction of the discrete level of an ion with the conduction band in a solid and the electron loss probability per unit time plays a dominant role. Numerical calculations for Li ions moving in Al, Zn and Au are compared with the experimental data.
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