Rotational Analysis of the BaI C2 Pi - X2 Sigma+ (0,0) Band

摘要

Rotational analysis of the BaI C superscript 2 pi - X superscript 2 sigma + (0,0) band system has been performed using molecular beam and laser spectroscopic techniques. This band is free from local perturbations, although significant interaction of the C superscript 2 pi state with several other 2 sigma + states is indicated. The spin-orbit ordering of the C state is confirmed to be regular, while the A-doubling parameters p and q are opposite in sign. Apparent anomalies in the line strengths of various branches in the two spin-orbit sub-bands are related to observed differences in the hyperfine structure of the C-state spin-orbit components.