Effect of the electron initial state on the ionization probability at different impact parameters

The probability, W, of ionization of hydrogen-like particles in the 1s- and 2s-states by atomic nuclei has been calculated within the Born approximation at different impact parameters p. Relations between the values of W(p) for the 1s and 2s initial states at the same energies of their binding are compared with the relations between the electron density distributions. Qualitative conclusions are drawn about relative importance of electrons located at different distances from nucleus.