Electric quadrupole transitions of Rb-2 observed in a pulsed molecular beam: The 1 (1)Delta(g)-X (1)Sigma(+)(g) bands near 540 nm

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Electric quadrupole transitions of Rb-2 are identified near 540 nm by resonance enhanced two photon ionization (RE2PI) study. The rotational structure shows O, P, Q, R, and S branches, which are quite similar to those of the electric quadrupole transition observed in K-2 [Kim , J. Chem. Phys. 113, 2945 (2000)]. From the high resolution rotational analysis and comparison with the spectra of other alkali diatomic molecules we assign the observed bands to the 1 (1)Delta(g)-X (1)Sigma(g)(+) transitions of Rb-2, which are allowed by electric quadrupole radiation. We obtain molecular constants for the 1 (1)Delta(g) state of Rb-85(2) as omega(e)=49.6652(9) cm(-1), T-e=18 263.960(1) cm(-1), B-e'=0.021 357 9(5) cm(-1), R-e=4.311 71(5) A. (C) 2002 American Institute of Physics.
Publisher
AMER INST PHYSICS
Issue Date
2002-04
Language
English
Article Type
Article
Keywords

2-PHOTON IONIZATION SPECTROSCOPY; STATE; RESONANCE; PREDISSOCIATION; CURVES; RB2; K-2; CS2

Citation

JOURNAL OF CHEMICAL PHYSICS, v.116, no.15, pp.6660 - 6666

ISSN
0021-9606
URI
http://hdl.handle.net/10203/83496
Appears in Collection
CH-Journal Papers(저널논문)
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