Atomic data for opacity calculations. XXI. The neon sequence

Abstract

Photoabsorption processes are studied for the ground and excited terms of the members of the neon isoelectronic sequence considered to be of significant astrophysical abundance. A two-state, LS close-coupling calculation is carried out. Oscillator strengths and total photoionization cross section data are calculated for even and odd LS terms with S=0,1;L<or=4, and an effective principal quantum number nu <or=10.