Photoionization Cross-Sections for Atoms and Ions of Carbon, Nitrogen, Oxygen, and Neon

Abstract

Photoionization cross-sections for all levels belonging to the ground-state configuration of atoms and ions of C, N, 0, and Ne are fitted to an interpolation formula which gives the cross-sections as a function of wavelength. The close-coupling approximation is used to obtain photoionixation cross-sections for C, C+, N++, O +, and Ne0+ and for excited levels of all atoms and ions. The remaining data are quoted from previous calculations in which the same method of computation was used.