Electron impact double ionization cross sections of light elements

A simple user-friendly semiempirical model is proposed to calculate electron impact double ionization cross sections of He, Li, Li + , B + , C + , C 3+ , O, O 2+ , O 3+ , Ne, Ne + , Ne 2+ , Na, Mg, Al 3+ , S, and Ar q+ (q=0–7) targets for the incident electron energies from threshold to 10 6 eV. The contributions in the total double ionization cross sections from the direct double ionization and inner-shell ionization processes are taken into account on the basis of experimental data considered. The results of the present analysis are compared with the available experimental data and theoretical calculations. The model is found successful for the description of experimental cross sections. Since, this model may be a prudent selection to meet the demand level in plasma modeling due to its simple inherent structure.