Inner-shell photoionization of ground-state lithium: Theoretical calculation in the photon energy region below 130 eV including 1snln ' l ' Rydberg resonance series

Calculations of 1s electron inner-shell photoionization from the 1s(2)2s S-2(e) Li ground state have been performed using recent developments of the R-matrix code with a 19-term target representation for incident photon energies up to 130 eV. This photon energy range allows important resonances in the partial cross sections due to 1 snln'l' autoionizing states to be obtained. Theoretical resonant results are compared with recent experimental measurements of Kiernan et al, [J. Phys. B 29, L181 (1996)] in the 1s2l threshold region. Partial cross sections, branching ratios, and asymmetry parameters are also compared outside the resonant energy range with previous theoretical results of Lisini, Burke, and Hibbert [J. Phys. B 23, 3767 (1990)], who used the R-matrix code with an 11-term target representation, as well as the corresponding experimental result; of Ferret et al. [Phys. Rev. A 36, 3172 (1987)], Langer et al. [Phys. Rev. A 43, 1652 (1991)], and Cubaynes et al. (private communication). [S1050-2947(98)05702-3].