L -shell photoionization of Mg-like S 4 + in ground and metastable states: Experiment and theory
- Mosnier, J.-P.
- Kennedy, E, T
- Cubaynes, D.
- Bizau, J.-M.
- Guilbaud, S.
- Hasoğlu, M.
- Blancard, C.
- Gorczyca, T, W
DOIAbstract
We report measurements of the absolute photoionization cross sections of the magnesium-like S 4+ ion over the 160-270 eV photon energy range. The experiments were performed with the Multi-Analysis Ion Apparatus (MAIA) at the SOLEIL synchrotron radiation facility. Single and double ionization ion yields produced by the photoionization of the 2p subshell of the S 4+ ion both from the 2p 6 3s 2 1 S0 ground state and the 2p 5 3s3p 3 P0,1,2 metastable levels were observed, as well as 2s excitations. Calculations of the photoionization cross sections were carried out using Multi-Configuration Dirac-Fock and R-matrix codes and the results are compared with the experimental data
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