Direct determination of molecular orbital symmetry of H sub 2 S using polarized x-ray emission

Journal Article · Mon Dec 31 23:00:00 EST 1990 · Physical Review, A; (USA)

DOI:https://doi.org/10.1103/PhysRevA.43.235· OSTI ID:6256534

Mayer, R; Lindle, D W; Southworth, S H; Cowan, P L ^[1]

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1. National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (US)

X-ray emission from the molecule H{sub 2}S is strongly polarized following excitation of a sulfur {ital 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 {ital b}{sub 2} symmetry, but with a high-excitation-energy component due to an orbital with {ital a}{sub 1} 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.

• OSTI ID: 6256534
• Journal Information: Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 43:1; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
BREMSSTRAHLUNG
CHALCOGENIDES
CHEMICAL ANALYSIS
ELECTROMAGNETIC RADIATION
FLUORESCENCE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INNER-SHELL IONIZATION
IONIZATION
LUMINESCENCE
MOLECULAR STRUCTURE
NONDESTRUCTIVE ANALYSIS
POLARIZATION
RADIATIONS
SULFIDES
SULFUR COMPOUNDS
SYMMETRY
SYNCHROTRON RADIATION
X-RAY EMISSION ANALYSIS