Electronic structure of BaLi. II. First observation of the Ba6,7Li spectrum: Analysis of the (2)2Π→ X  2Σ+ system

The thermal emission at high temperature (1100 °C) of BaLi has been analyzed spectroscopically at high resolution with a Fourier transform spectrometer. Molecular emission in the infrared region is observed and is ascribed to a transition from the (2)2Π state towards the ground state X 2Σ+ of BaLi....

Full description

Saved in:
Bibliographic Details
Published in:The Journal of chemical physics 1994-01, Vol.100 (2), p.945-949
Main Authors: D’Incan, J., Effantin, C., Bernard, A., Fabre, G., Stringat, R., Boulezhar, A., Vergès, J.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The thermal emission at high temperature (1100 °C) of BaLi has been analyzed spectroscopically at high resolution with a Fourier transform spectrometer. Molecular emission in the infrared region is observed and is ascribed to a transition from the (2)2Π state towards the ground state X 2Σ+ of BaLi. These states (among several others) have been predicted from ab initio calculations [see part I, A. R. Allouche and M. Aubert-Frécon, J. Chem. Phys. 100, 938 (1994)]. Very good agreement is observed between theoretical predictions and experiment for the energy of the (2)2Π state and spectroscopic constants of both states. Both isotopic species Ba7Li and Ba6Li have been investigated and molecular parameters are derived from the analysis of the (2)2Π→X 2Σ+(0,0) band (the one analyzable band). No irregularities appear in the rotational structure.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.466576