IONIZATION CROSS-SECTIONS OF P, S, CL, K AND CA FOR PROTONS AND ALPHA-PARTICLES BETWEEN 0.6 AND 2.8 MEV

Ionisation cross sections for protons incident on P, S, CI, K and Ca and for alpha particles on CI and Ca have been obtained from experimental x-ray production cross sections for collision energies between 0.6 and 2.8 MeV. Systematic comparisons of all existing theories with the present results and previous ones at the same scaled projectile velocity are also shown.