High-resolution photoabsorption at the L{sub 2,3} thresholds in H{sub 2}S and D{sub 2}S
- Lawrence Berkeley Lab., CA (United States)
- and others
Photoabsorption spectra of gas-phase hydrogen sulfide and deuterium sulfide near the sulfur L{sub 2,3} ionization thresholds have been measured using synchrotron radiation with high energy resolution from the SX700/II soft x-ray monochromator at BESSY. The spectra of both molecules are characterized by broad valence-shell absorption features 5-8 eV below the L{sub 2} threshold energy and by many narrower Rydberg excitations 0-5 eV below the L{sub 2} edge. Previously unobserved fine structure is resolved in both regions. Comparison of the H{sub 2}S and D{sub 2}S spectra allows the identification of transitions which include vibrational excitation, due to the isotopic dependence of vibrational energies. Least-squares analysis of the data indicates that the twofold degeneracy of the sulfur 2p{sub 3/2} level is removed by the molecular field, with a resulting splitting of 115 meV for the higher-energy core-excited Rydberg states.
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 281485
- Report Number(s):
- CONF-9305421-; ISSN 0003-0503; TRN: 96:019409
- Journal Information:
- Bulletin of the American Physical Society, Vol. 38, Issue 3; Conference: 1993 American Physical Society annual meeting on atomic, molecular, and topical physics, Reno, NV (United States), 16-19 May 1993; Other Information: PBD: May 1993
- Country of Publication:
- United States
- Language:
- English
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