Rotational line strengths in a 5Σ – 5Π transition with application to the A – X system of CrO
- 1 December 1984
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Physics
- Vol. 62 (12) , 1610-1615
- https://doi.org/10.1139/p84-206
Abstract
Detailed calculations of the line strengths in a 5Σ – 5Π transition as a function of J show that the relative branch intensities in the A – X system of CrO, which do not follow the published formulae for 5Σ(b) – 5Π(a) transitions, can be explained very well in terms of strong spin uncoupling in the 5Π state, with a single perpendicular transition moment dominating. It is emphasized that spin uncoupling affects line strengths by an amount that increases very rapidly with multiplicity, so that algebraic formulae for the pure coupling cases quickly lose their value. An unusual cancellation effect occurs in the main branches of a 5Σ – 5Π transition, nine of which have intensities that drop to zero and then rise again with increasing J.Keywords
This publication has 0 references indexed in Scilit: