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dc.creatorSeto, Jenning Y.en_US
dc.creatorLe Roy, Robert J.en_US
dc.creatorVergès, J.en_US
dc.creatorAmiot, C.en_US
dc.date.accessioned2006-06-15T19:20:10Z
dc.date.available2006-06-15T19:20:10Z
dc.date.issued1999en_US
dc.identifier1999-TB-12en_US
dc.identifier.urihttp://hdl.handle.net/1811/19441
dc.description$^{a}$ P.G. Hajigeorgiou and R.J. Le Roy, Paper WE04 at the 49'th Ohio State University International Symposium on Molecular Spectroscopy, 1994en_US
dc.descriptionAuthor Institution: Guelph-Waterloo Centre for Graduate Work in Chemistry and Biochemistry, University of Waterloo; Laboratorie Aim\'{e} Cotton, Campus d'Orsayen_US
dc.description.abstractHigh resolution $A-X$ emission data involving ground state levels up to $v^{\prime \prime} = 111$ (spanning 99.5\% of the potential well) have been acquired for three isotopomers of $Rb_{2}$ in the ground electronic state. While a good fit $(\bar{\sigma}_{f} = 1.18)$ to the 12144 transition frequencies (with uncertainties $\pm 0.001 cm^{-1})$ is obtained from an unconstrained combined-isotopomer Dunham-type analysis, it requires a large number (66) of expansion parameters, and resulting unconstrained centrifugal distortion constants (CDC's) will be unreliable for extrapolations to higher-J. Moreover, Dunham or near-dissociation expansion fits using constrained theoretical CDC's up to $O_{v}$ fail to properly represent the data, as even higher-order CDC's are required. In contrast, a direct fit of these data to a ``Modified Lennard-Jones'' analytical $potential^{a}$ defined by only 15 fitted parameters yields essentially the same standard error as the unconstrained Dunham fit, and should yield reliable predictions for essentially all J's. This potential form incorporates the proper $R^{-6}$ asymptotic behaviour and is constrained to have the theoretically predicted $C_{6}$ dispersion $coefficient.^{a}$ Although the data set involves the three isotopomers (85,85), (85,87) and (87,87), none of these analyses were able to determine any Born-Oppenheimer Breakdown effects.en_US
dc.format.extent150517 bytes
dc.format.mimetypeimage/jpeg
dc.language.isoEnglishen_US
dc.publisherOhio State Universityen_US
dc.titleDIRECT POTENTIAL FIT ANALYSIS OF EMISSION INTO $X {^{1}}\Sigma^{+}_{g}$ STATE $Rb_{2}$: NOTHING ELSE WILL DOIen_US
dc.typearticleen_US


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