Robust Estimation of Term Values in High-Resolution Spectroscopy: Application to the e3Σ +u → a3Σ +g Spectrum of T2

In complex molecular spectra the identification of the pair of states corresponding to an observed transition energy is a difficult process. Erroneous assignments are hard to avoid. They cause fundamental difficulties when using least-squares procedures for estimating term values. On the other hand,...

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Bibliographic Details
Published inJournal of molecular spectroscopy Vol. 160; no. 2; pp. 434 - 445
Main Authors Ruckstuhl, A.F., Stahel, W.A., Dressler, K.
Format Journal Article
LanguageEnglish
Published San Diego, CA Elsevier Inc 01.08.1993
Elsevier
Subjects
Atomic and molecular physics
Exact sciences and technology
Molecular properties and interactions with photons
Molecular spectra
Physics
Diatomic molecule
Rovibrational analysis
Theoretical study
Isotopic species
Electronic transition
Tritium Molecules
Calculating method
Inorganic compound
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Summary:In complex molecular spectra the identification of the pair of states corresponding to an observed transition energy is a difficult process. Erroneous assignments are hard to avoid. They cause fundamental difficulties when using least-squares procedures for estimating term values. On the other hand, a robust fitting method has proven extremely helpful for finding erroneous assignments and for obtaining reliable estimates of term values. These facts are demonstrated by applying both procedures to the estimation of term values in the e 3Σ + u → a 3Σ + g bands of T 2.
ISSN:0022-2852
1096-083X
DOI:10.1006/jmsp.1993.1190