Double-Ionization Effects on Radiative Rates, Auger Rates, and Fluorescence Yields

The contributions of double ionization to radiative rates, Auger rates, and fluorescence yields for the filling of atomic K-shell vacancies are calculated by use of the classical Gryzinski methods. The double-ionization correction to the ratio of ionization cross sections for α particles and deuterons incident on ₂₂Ti is {~}6%. Recent experimental ₂₂Ti results of Lewis, Natowiz, and Watson differ from the Born prediction by as much as 7% between 10 and 80 MeV with errors of 2% or less.