The direct calculation of the differential and total cross sections of the processes of inelastic ionization of atoms and ions by electron impact in the distorted-wave approximation based on the characteristics of the state of atoms and ions obtained in the Hartree-Fock-Slater quantum-statistical model is presented. Calculated differential and total ionization cross-sections are compared to classical binary-encounter approximation, semiclassical impulse approximation and available experimental data. Results of calculations point to the computational approach proposed gives consistent results. Considering applicability of Hartree-Fock-Slater model in wide scope of temperatures and densities, such approach to the electron ionization cross-section calculation can be used in a broad range of energies and ion charges.

impact ionization, cross-sections, distorted wave approximation, quantum-statistical models of plasma

Mathematical modelling in actual problems of science and technics

Chetverushkin Boris Nikolaevich,  ,  orcid.org/0000-0003-1216-5438,  KIAM RAS

Gasilov Vladimir Anatolievich,  ,  orcid.org/0000-0001-7574-4061,  KIAM RAS

Zhukovsky Mikhail Evgenievich,  ,  orcid.org/0000-0001-5886-3026,  KIAM RAS

Zakharov Vasily Sergeevich,  ,  orcid.org/0000-0002-4865-9635,  KIAM RAS

Markov Mikhail Borisovich,  ,  orcid.org/0000-0002-3428-9688,  KIAM RAS