ELECTRON-IMPACT IONIZATION CROSS-SECTIONS AND IONIZATION RATE COEFFICIENTS FOR ATOMS AND IONS FROM SCANDIUM TO ZINC

Using the empirical formula recently proposed, electron-impact ionization cross-sections for single ionization from the ground state are given for free atoms and for nearly all ionization stages from scandium (Z=21) to zinc (Z=30). For these species ionization rate coefficients are given under the assumption of a Maxwellian distribution of the impacting electrons. Multiple ionization, lowering of ionization potential, or collision limit are not taken into account. © 1969 Springer-Verlag.