Abstract
The true experimental potential energy curves for the electronic ground states of astrophysically important TaO, TaS, ZrS and SiO+molecules are constructed by using the Rydberg–Klein–Rees method as modified by Vanderslice et al. The ground state dissociation energies are determined by curve fitting techniques using the five parameters Hulburt-Hirschfelder (H-H) function. The estimated dissociation energies are 8.19 ± 0.17, 6.9 ±0.14, 5.89 ± 0.12 and 5.75 ± 0.12 eVfor TaO, TaS, ZrS and SiO+ respectively. These values are in good agreement with the literature values. The r-centriods and Franck–Condon factors (FC Factors) for the bands of K 2 φ 5/2 - X 2 Δ 3/2 (K-X) system of TaO, A-X 2 Δ (A-X) and B-X 2 Δ (B-X)systems of TaS, B 1 Π - X1 Σ+ (B-X) system of ZrS and B 2Σ+ - X2 Σ+ (B-X) and A 2 Π - X2 Σ+ (A-X)systems of SiO+ molecules have been calculated. The Franck–Condon factors (FC factors) are evaluated by the approximate analytical methods of Jarmain and Fraser. The absence of the bands of these systems is explained.
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Reddy, R., Nazeer Ahammed, Y., Sasikala Devi, B. et al. Spectroscopic Studies on Astrophysically Interesting TaO TaS, ZrS and SiO+ Molecules. Astrophysics and Space Science 281, 729–741 (2002). https://doi.org/10.1023/A:1016368227862
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DOI: https://doi.org/10.1023/A:1016368227862