Abstract
Electron-impact ionization cross sections of Be-like ions are studied in the two-potential distorted-wave approximation. The relativistic and nonrelativistic total cross sections for incident energies from 1 to 10 units of ionization energy are calculated for B+, C2+, N3+, O4+, F5+, Ne6+, Al9+, Ar14+, Fe22+, Ag43+, and Hg76+. Systematic behaviors along the Be isoelectronic sequence are demonstrated.