On Impact Ionization of Ions Modeling in the Distorted Waves Approximation

• Published in: Mathematical models and computer simulations Vol. 14; no. 3; pp. 389 - 397
• Main Authors: Zakharov, V. S., Zhukovskiy, M. E., Markov, M. B., Zakharov, S. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 2022; Springer Nature B.V
• Subjects: Approximation; Electron impact; Hartree approximation; Ionization; Ionization cross sections; Mathematical analysis; Mathematical Modeling and Industrial Mathematics; Mathematics; Mathematics and Statistics; Nitrogen atoms; Simulation and Modeling; Statistical models; cross sections of atomic processes; collisional ionization; distorted wave approximation; quantum statistical models of plasma
• ISSN: 2070-0482; 2070-0490
• DOI: 10.1134/S2070048222030164

Atomic and ion properties calculated in the Hartree–Fock–Slater quantum-statistical model are used in the direct calculation of the differential and total cross sections of electron impact ionization of singly ionized oxygen and nitrogen atoms by the distorted wave approximation. The convergence of the cross sections justifies applicability of the approximation for calculating the cross sections for impact ionization of ions by electrons in gas-plasma formations. The calculated cross sections are compared with analytical approximations and available experimental data. The calculation results show that the proposed method gives reliable results, which, combined with the applicability of the Hartree–Fock–Slater model in a wide range of temperatures and densities, allow it to be used in a wide range of energies and ion charges.