Spin--rotation and hyperfine structure in the X sup 2. Sigma. sup + state of yttrium monosulfide by molecular-beam laser-radio-frequency double resonance

Journal Article · Sat Dec 15 04:00:00 EST 1990 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.459279· OSTI ID:6153932

Azuma, Y; Childs, W J ^[1]

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1. Argonne National Laboratory, Argonne, IL, 60439 (USA)

The molecular-beam laser-radio-frequency double-resonance method has been used to measure the spin--rotation and magnetic hyperfine structure of yttrium monosulfide (YS) in its {ital X} {sup 2}{Sigma}{sup +} electronic ground state. The spin--rotation constant {gamma} is found to be positive, unlike that of YO. The Fermi contact and dipolar hyperfine interactions (due to the spin {ital I}=1/2 of {sup 89}Y) are found to be rather close to the corresponding quantities in YO. The contact hfs constant {ital b} in the excited {ital B} {sup 2}{Sigma}{sup +} state of YS was determined by combining the directly measured {ital X} {sup 2}{Sigma}{sup +} splitting information with {ital B}--{ital X} optical hfs observations.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6153932
• Journal Information: Journal of Chemical Physics; (USA), Journal Name: Journal of Chemical Physics; (USA) Vol. 93:12; ISSN JCPSA; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
BEAMS
CHALCOGENIDES
DOUBLE RESONANCE METHODS
ELECTROMAGNETIC RADIATION
ELECTRONIC STRUCTURE
HYPERFINE STRUCTURE
LASER RADIATION
MOLECULAR BEAMS
RADIATIONS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM SULFIDES