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- Title
Relativistic R-matrix close-coupling calculations for photoionization of Ne-like Al IV.
- Authors
Jha, A. K. S.; Jha, P.; Tyagi, S.; Mohan, M.
- Abstract
We present relativistic close-coupling photoionization calculations of Al IV using the Breit-Pauli R-matrix method to obtain photoionization cross-section of Al IV from the ground state and the lowest two J=0 (even) excited states. A multi-configuration eigenfunctions expansion of the core Al V is employed with spectroscopic configurations 2s22p5, 2s2p6, 2s22p43s, 2s22p43p, 2s22p43d and 2s22p44s. We have included, for the first time, the lowest 68 level target states of Al V in the photoionization calculations of Al IV. Extensive configuration interaction wavefunctions are used to describe both the initial Al IV states and the final Al V states. Cross-sections are compared from three level calculations including only 2s2 2p52Po3/2, 1/2 and 2s 2p62S1/2 levels of Al V. The present calculation using the lowest 68 target levels of Al V are presented for the first time and should provide reasonably complete database for practical application for photoionization cross-section for Al IV, where high-energy cross-sections along with near-threshold photoionization cross-section is required.
- Subjects
R-matrices; COUPLING constants; PHOTOIONIZATION; NEON; MOLECULAR shapes; WAVE functions
- Publication
European Physical Journal D (EPJ D), 2006, Vol 39, Issue 3, p391
- ISSN
1434-6060
- Publication type
Article
- DOI
10.1140/epjd/e2006-00119-x