Laher, Russ R. and Khakoo, Murtadha A. and Kuzmanović, M. and Bojović, V. and Antic-Jovanović, A. (2011) Radiative transition parameters of the 107,109 Ag_2C^1∏_u-X^1∑_g^+ band system. Journal of Quantitative Spectroscopy and Radiative Transfer, 112 (5). pp. 786-792. ISSN 0022-4073 http://resolver.caltech.edu/CaltechAUTHORS:20110317-130410084
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The relative band strengths of several absorption bands of the Ag2C1∏u-X1∑g+ system are measured for the first time. Ratios of observed strengths for bands with common lower vibronic levels are compared with theoretically predicted absorption band oscillator strengths, which we computed by numerically solving the radial Schrödinger equation for the vibrational wave functions, ψυ′ and ψυ″ of the 107,109 Ag2C1∏u-X1∑g+ band system, using Rydberg–Klein–Rees potential energy curves and a suitable choice for the electronic transition moment function. This resulted in a useful set of radiative transition parameters for a large matrix of Ag2 C–X bands. The functional form of the electronic transition moment required by the observed band strength ratios forces good agreement between the observations and diatomic molecular theory. Since the function is highly nonlinear, the commonly applied r-centroid approximation is invalid, and numerical integration of ʃ Ψv'*Re(r)Ψv' dr had to be performed instead. As a final check on the reliability of our results, we find good agreement between the experimentally measured displacements of band heads for the 107,107 Ag2 and 109,109 Ag2 isotopologues and the corresponding isotopic shifts of our calculated band origins.
|Additional Information:||© 2010 Elsevier. Received 13 September 2010; accepted 27 September 2010. Available online 30 September 2010. This work was supported in part by the Ministry of Science of the Republic of Serbia, project no.142065, and in part by the National Aeronautics and Space Administration (NASA).|
|Subject Keywords:||Silver dimer; Diatomic silver molecule; Ag-2 spectrum; Ag-2 C-X band system; Band origins; Franck-Condon factors; r-Centroids; Electronic transition moment function; Einstein coefficients; Absorption band oscillator strengths|
|Official Citation:||Russ R. Laher, Murtadha A. Khakoo, M. Kuzmanovic, V. Bojovic, A. Antic-Jovanovic, Radiative transition parameters of the band system, Journal of Quantitative Spectroscopy and Radiative Transfer, Volume 112, Issue 5, March 2011, Pages 786-792, ISSN 0022-4073, DOI: 10.1016/j.jqsrt.2010.09.009.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||18 Mar 2011 22:01|
|Last Modified:||18 Mar 2011 22:01|
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