Calculated cross sections for the K-shell ionization of chromium, nickel, copper, scandium and vanadium using the DM formalism

We used the Deutsch-Märk (DM) formalism to calculate atomic K-shell ionization cross sections for the elements chromium (Cr), nickel (Ni), copper (Cu), scandium (Sc) and vanadium (V). The calculated K-shell ionization cross sections were compared with recently measured K-shell ionization cross sections and good to satisfactory agreement has been found for all five elements. Moreover, when compared with other available calculated K-shell ionization cross sections for these five atoms using a variety of theoretical methods and semi-empirical formulae, the predictions of the DM formalism achieve a level of agreement with experimental data that is as good as, or sometimes better than, the predictions from the other methods.