Abstract
A Monte Carlo simulation is performed for study of the dependence of kinetic electron emission on nuclear charge of projectile Z 1, using the nonlinear response theory with the density-functional (DF) formalism to calculate electron excitation cross section. The calculated electron yield as well as the inelastic stopping power show clear Z 1 oscillations, however, the oscillation of the yield is suppressed, in particular for high Z 1, due to large elastic energy loss of the ions and cascade process of primary excited electrons within the solid; the former and the latter becomes remarkable for slow and high ion velocity, respectively. The energy distribution of emitted electrons is approximately independent of Z 1 due to mainly the electron cascade process in the solid, whereas the increase in energy of primary excited electrons causes the distribution to broaden towards high-energy side with increasing projectile velocity.
Published Version
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