TITLE

New measurements of the a3 Σ+u state of K2 and improved analysis of long-range dispersion and exchange interactions between two K atoms

AUTHOR(S)
Zhao, Guoxing; Zemke, Warren T.; Kim, J. T.; Ji, Bing; Wang, H.; Bahns, J. T.; Stwalley, W. C.; Li, Li; Lyyra, A. M.; Amiot, C.
PUB. DATE
November 1996
SOURCE
Journal of Chemical Physics;11/8/1996, Vol. 105 Issue 18, p7976
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Resolved fluorescence from the K2 43 Σ+g state to the a3 Σ+u state has been measured by the perturbation-facilitated optical–optical double resonance (PFOODR) technique. Data have been fit to an improved set of molecular constants for the a3 Σ+u state. In particular, the new Te value for this state has been determined as 4197.935±0.047 cm-1, nearly 1.8 cm-1 higher than previously reported. By combining the new results for the a3 Σ+u state and the recent results for the ground X1 Σ+g state [J. Chem. Phys. 103, 3350 (1995)], we report in this paper an improved analysis of long-range dispersion and exchange interactions between two K atoms and of the X1 Σ+g and a3 Σ+u state dissociation energies De of 4450.674±0.072 cm-1 and 252.74±0.12 cm-1, respectively. © 1996 American Institute of Physics.
ACCESSION #
7624937

 

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