Rotationally resolved nonresonant two-photon ionization of SH

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.466798· OSTI ID:7280216

Hsu, C; Baldwin, D P; Liao, C; Ng, C Y ^[1]

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1. Ames Laboratory, USDOE (United States) Department of Chemistry, Iowa State University, Ames, Iowa 50011 (United States)

The threshold photoelectron (PE) spectrum for nascent SH formed in the ultraviolet photodissociation of H[sub 2]S has been measured using the nonresonant two-photon pulsed field ionization (N2P-PFI) technique. The rotationally resolved N2P-PFI-PE spectrum of SH indicates that photoionization dynamics favor the rotational angular momentum change [Delta][ital N][le]0 with the [Delta][ital N] values up to [minus]3, an observation similar to that found in the PFI-PE spectra of OH (OD) and NO. The ionization energy for SH([ital X] [sup 2][Pi][sub 3/2]) is determined to be 84 057.5 [plus minus] 3 cm[sup [minus]1] (10.4219 [plus minus] 0.0004 eV). The spin--orbit splitting for SH([ital X] [sup 2][Pi][sub 3/2,1/2]) is 377 [plus minus] 2 cm[sup [minus]1], in agreement with the literature value. This study illustrates that the PFI-PE detection method can be a sensitive probe for the nascent internal energy distribution of photoproducts.

• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 7280216
• Journal Information: Journal of Chemical Physics; (United States), Vol. 100:11; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
HYDROGEN SULFIDES
ANGULAR MOMENTUM
IONIZATION POTENTIAL
L-S COUPLING
RESOLUTION
CHALCOGENIDES
COUPLING
HYDROGEN COMPOUNDS
INTERMEDIATE COUPLING
SULFIDES
SULFUR COMPOUNDS
664200* - Spectra of Atoms & Molecules & their Interactions with Photons- (1992-)
664400 - Experimentally Derived Information on Atomic & Molecular Properties- (1992-)