Hyperfine structure of low-lying vibrational levels in the B electronic state of molecular iodine

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Journal of the Optical Society of America B: Optical Physics; (USA)

DOI:https://doi.org/10.1364/JOSAB.6.001656· OSTI ID:5593954

Morinaga, A; Sugiyama, K; Ito, N ^[1]; Helmcke, J ^[2]

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1. National Research Laboratory of Metrology, 1-1-4, Umezono, Tsukuba-shi, Ibaraki 305, Japan (JP)
2. Physikalisch-Technische Bundesanstalt, Bundesalle 100, D-3300 Braunschweig, Federal Republic of Germany

The hyperfine structures of the weak lines {ital R}(69) in the 3--4 band and {ital P}(84) in the 5--5 band of the {ital B}{l arrow}{ital X} electronic transition in molecular {sup 127}I{sub 2} at {lambda}=657 nm have been detected by the method of FM saturation spectroscopy. Frequency separations between the hyperfine components were measured, and the hyperfine coupling constants for the electric quadrupole interaction and the magnetic spin-rotation interaction were determined. For low vibrational levels of the {ital B} state, {ital eQq}{sub {ital B}} depends linearly on the vibrational energy of the level {ital v}{sub {ital B}} according to {ital eQq}{sub {ital B}} (MHz)={minus}0.01721{ital G}({ital v}{sub {ital B}}) (cm{sup {minus}1}){minus}484.89. {Delta}{ital C} is almost constant for {ital v}{sub {ital B}} values smaller than 6.

• OSTI ID: 5593954
• Journal Information: Journal of the Optical Society of America B: Optical Physics; (USA), Journal Name: Journal of the Optical Society of America B: Optical Physics; (USA) Vol. 6:9; ISSN JOBPD; ISSN 0740-3224
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
ELEMENTS
ENERGY LEVELS
EXCITED STATES
HALOGENS
HYPERFINE STRUCTURE
IODINE
NONMETALS
SPECTRA
VIBRATIONAL STATES