Document Type
Article
Publication Date
1-1991
Publication Title
Physical Review A
Volume
43
Issue
1
First page number:
235
Last page number:
241
Abstract
X-ray emission from the molecule H2S is strongly polarized following excitation of a sulfur K-shell electron to an unoccupied subthreshold molecular orbital with a polarized x-ray beam. Changes in the polarization of the emission spectrum are observed as the incident beam's energy is swept across the subthreshold absorption resonance. The previously unresolved absorption resonance is shown experimentally to be primarily associated with a molecular orbital of b2 symmetry, but with a high-excitation-energy component due to an orbital with a1 symmetry. Satellite emission intensity is shown to depend on the primary photon energy and is therefore associated with multivacancy effects and not with contamination, as previously suggested.
Keywords
Electronic excitation; Hydrogen sulfide; Molecular orbitals; Symmetry (Physics); X-rays — Polarization
Disciplines
Analytical Chemistry | Atomic, Molecular and Optical Physics | Biological and Chemical Physics | Elementary Particles and Fields and String Theory | Physical Chemistry
Language
English
Permissions
Copyright American Physical Society, used with permission
Repository Citation
Mayer, R.,
Lindle, D. W.,
Southworth, S. H.,
Cowan, P. L.
(1991).
Direct Determination of Molecular-orbital Symmetry of H2S Using Polarized X-ray Emission.
Physical Review A, 43(1),
235-241.
https://digitalscholarship.unlv.edu/chem_fac_articles/73
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