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Spectroscopic study of the B 1Pi state of 39KH

J. Chem. Phys. 131, 164304 (2009); doi:10.1063/1.3250979

Published 28 October 2009

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Ang-Yu Lee (李昂諭) and Wei-Tzou Luh (陸維作)
Department of Chemistry, National Chung Hsing University, 250 Kuo-Kuang Road, Taichung 402, Taiwan
The B 1Pi excited electronic state of 39KH has been observed for the first time by a pulsed fluorescence excitation spectroscopic technique. We have found only one vibrational level, in which seven e-parity and seven f-parity sublevels are identified. The Dunham-type coefficients A00, A01, and A02 and the mean internuclear separation for the B 1Pi state have been derived. Their numeric values are separately 27 682.64(1)  cm−1, 1.533(1)  cm−1, −0.001 25(2)  cm−1, and 3.345(1) Å for the B 1Pi+ state; 27 682.66(2)  cm−1, 1.532(2)  cm−1, −0.001 20(3)  cm−1, and 3.347(2) Å for the B 1Pi− state. The dissociation energy D0 is determined to be 131.4(7)  cm−1. The vibrational frequency and the dissociation energy for the B 1Pi state have also been estimated and the results are compared with recent ab initio calculations. ©2009 American Institute of Physics
History: Received 1 August 2009; accepted 25 September 2009; published 28 October 2009
Permalink: http://link.aip.org/link/?JCPSA6/131/164304/1
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KEYWORDS and PACS

Keywords
PACS
  • 33.50.Dq
    Molecular fluorescence and phosphorescence spectra
  • 33.15.Fm
    Molecular bond strengths, dissociation energies
  • 31.50.Df
    Potential energy surfaces for excited electronic states (atoms and molecules)
  • 33.15.Mt
    Molecular rotation, vibration, and vibration-rotation constants
  • YEAR: 2009

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PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
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