High-resolution photoabsorption at the L{sub 2,3} thresholds in H{sub 2}S and D{sub 2}S

Journal Article · Sat May 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:281485

Hudson, E ^[1]; Shirley, D A; Remmers, G ^[2]

---

1. Lawrence Berkeley Lab., CA (United States)
2. 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--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ABSORPTION SPECTRA
DEUTERIUM COMPOUNDS
HYDROGEN SULFIDES
IONIZATION
RYDBERG STATES