Abstract
Based on the independent particle model, we consider single and multiple ionization of noble gas atoms induced by fast proton impact. Previous calculations are improved by accounting for time-delayed Auger-like electron emission processes on the basis of a straightforward statistical model. Results for proton–neon and proton–argon collisions are compared with experimental data. It is found that multiple ionization at high projectile energies (E > ≈ 1 MeV) is dominated by Auger-like processes and can be described appropriately by our model.
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