The 530 nm system of KRb observed in a pulsed molecular beam: New electric quadrupole transitions (1 (1)Delta-X (1)Sigma(+))

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New electronic transitions of KRb are identified near 530 nm by resonance enhanced two photon ionization study in a supersonic molecular beam. The rotational structure shows O, P, Q, R, and S branches. 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 -X (1)Sigma (+) transitions of KRb, which are allowed by electric quadrupole radiation. We obtain molecular constants for the upper electronic state of (KRb)-K-39-Rb-85 as omega (e)=64.624 1(35)cm(-1), T-e=18 991.011 0(14)cm(-1), B-e(')=0.035 703 9(10)cm(-1), and R-e=4.204 55(6) A. Another new electronic transition observed in the same wavelength region is assigned to the 3 (3)Sigma (+)-X (1)Sigma (+) transition from the comparison with ab initio calculations. (C) 2001 American Institute of Physics.
Publisher
AMER INST PHYSICS
Issue Date
2001-10
Language
English
Article Type
Article
Keywords

RESONANCE POLARIZATION SPECTROSCOPY; 2-PHOTON IONIZATION SPECTROSCOPY; DIATOMIC-MOLECULES; STATE; BANDS; CS2; (KRB)-K-39-RB-85; PREDISSOCIATION; RBCS; K-2

Citation

JOURNAL OF CHEMICAL PHYSICS, v.115, no.16, pp.7413 - 7419

ISSN
0021-9606
URI
http://hdl.handle.net/10203/83489
Appears in Collection
CH-Journal Papers(저널논문)
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