Abstract

Relativistic calculations of differential ionization probability in the U91+(1s)–U collision are performed in the monopole approximation. The method employs the active electron approximation, in which only the active electron of the H-like ion participates in the excitation and ionization processes while the passive electrons of the neutral atom provide a screening potential. The time-dependent Dirac wave function of the active electron is represented as a linear combination of the eigenstates of the unperturbed Hamiltonian localized at the H-like ion.

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