Photoionization of the 3s23p43P and the 3s23p41D,1S states of sulfur: Experiment and theory

Barthel, Mathias; Flesch, Roman; Rühl, Eckart; McLaughlin, Brendan M.

doi:10.1103/physreva.91.013406

Title: Photoionization of the $3 s^{2} 3 p^{4}^{3} P$ and the $3 s^{2} 3 p^{4}^{1} D,^{1} S$ states of sulfur: Experiment and theory

Journal Article · 19 January 2015 · Physical Review A - Atomic, Molecular, and Optical Physics

DOI: https://doi.org/10.1103/physreva.91.013406 · OSTI ID:1565356

Barthel, Mathias ^[1]; Flesch, Roman ^[1]; Rühl, Eckart ^[1]; McLaughlin, Brendan M. ^[1]

Freie Univ., Berlin (Germany). Physikalische Chemie

Photoionization of neutral atomic sulfur in the ground and metastable states was studied experimentally at a photon energy resolution of 44 meV FWHM. Relative cross section measurements were recorded by using tunable vacuum ultraviolet (VUV) radiation in the energy range 9-30 eV obtained from a laser-produced plasma and the atomic species were generated by photolysis of molecular precursors. Photoionization of this atom is characterized by multiple Rydberg series of autoionizing resonances superimposed on a direct photoionization continuum. A wealth of resonance features observed in the experimental spectra are spectroscopically assigned and their energies and quantum defects tabulated. The cross-section measurements are compared with state-of-the-art theoretical cross-section calculations obtained from the Dirac Coulomb $$R$$-matrix method. The resonances series in the spectra are identified and compared indicating similar features in both the theoretical and experimental spectra.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Univ. of California, Oakland, CA (United States); UT-Battelle LLC/ORNL, Oak Ridge, TN (Unted States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC02-05CH11231; AC05-00OR22725

OSTI ID:: 1565356

Journal Information:: Physical Review A - Atomic, Molecular, and Optical Physics, Journal Name: Physical Review A - Atomic, Molecular, and Optical Physics Journal Issue: 1 Vol. 91; ISSN 1050-2947; ISSN PLRAAN

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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