Monopole Coulomb-deflection factor for heavy-particle inner-shell-ionization cross sections

The repulsion between positively charged projectiles and the nucleus of target atoms gives rise to a Coulomb-deflection factor that reduces the inner-shell-ionization cross sections calculated for straight-line particle trajectories. In the monopole approximation to the repulsion, this factor depends on the function G₀(x)=[xdK_ix(y)/dy|_y=x]², where K_ix is the Bessel function of imaginary order. Through identities between Bessel functions of complex order and argument we have, in this addendum to an earlier paper [W. Brandt and G. Lapicki, Phys. Rev. A 20 465 (1979)], reduced the evaluation of G₀(x) to computed functions. Values of G₀(x) and its integrals as they appear in the theory of K- and L-shell ionizations are tabulated. The monopole approximation is compared with results based on the standard approximation G(x)=1 which describes the experimental data.