Recommended Data on the Electron Impact Ionization of Light Atoms and Ions

Abstract

Experimental and theoretical cross section data for electron impact ionization of light atoms and ions have been assessed. Based on this assessment and, in some cases, on the classical scaling laws, a recommended cross section has been produced for each species. This has been used to evaluate recommended Maxwellian rate coefficients over a wide range of temperatures. Convenient analytic expressions have been obtained for the recommended cross sections and rate coefficients. The data are presented in both graphical and tabular form and estimates of the reliability of the recommended data are given.

Radiative properties of non-equilibrium nitrogen plasma in soft x-ray range

“…1. Сечения ионизации для ионов N V (слева) и N VI (справа), рассчитанные в приближении искаженных волн с потенциалом ХФС (DWA) в сравнении с аппроксимацией экспериментальных данных (Experiment fit) [30] Рис. 2.…”

Monte Carlo Code for the Damage of Bio-Molecules Irradiated by X-Ray Free Electron Lasers: Incorporation of Election Impact Ionization Processes

“…16) The cross sections of the electron impact ionization processes (σ e ) are given in the data given by Bell et al. 14) For the rate equations, we use the rates for the electron impact ionization processes, that is, R e = N e σ e v e ,…”

“…We calculate the change of both of ionized and excited states of the atoms and the production of free and quasi-free electrons using rates or cross sections of these ionization processes as a function of times. We use the same rates or cross sections as those given by ourselves, 7,10) Bell el al., 14) and Henke et al: 15) The X-Ray absorption cross sections (σ xa ) are calculated by Cowan code 16) where Hartree-Fock and Configuration Interaction methods are employed. On the other hand, the cross sections of Compton scattering (σ CS ) are determined by the Klein-Nishina formula.…”

The Interaction of High Brightness X-Rays with Clusters or Bio-Molecules

“…We calculate the change of both of ionized and excited states of the atoms and the production of free and quasi-free electrons using rates or cross sections of these ionization processes as a function of times. We use the same rates or cross sections as those given in several papers (Bell et al, 1983, Henke et al, 1993, Moribayashi, 2008. The x-ray absorption cross sections ( xa ) are roughly calculated by…”