Conforming the measured lifetimes of the $5d \ ^2D_{3/2,5/2}$ states in Cs with theory

摘要: We find very good agreement between our theoretically evaluated lifetimes of the $5d \ ^2D_{3/2}$ and ^2D_{5/2}$ states Cs with experimental values reported in [Phys. Rev. A {\bf 57}, 4204 (1998)], which were earlier evinced to be disagreeing an rigorous theoretical study 69}, 040501(R) (2004)] another precise measurement [Opt. Lett. 21}, 74 (1996)]. In this work, we have carried out calculations radiative transition matrix elements using many variants relativistic many-body methods, mainly coupled-cluster theory framework, analyze propagation electron correlation effects elucidate their roles for accurate evaluations elements. also demonstrate contributions explicitly from Dirac-Coulomb interactions, frequency independent Breit interaction lower order quantum electrodynamics (QED) effects. Uncertainties these due different possible sources errors are estimated. By combining calculated wavelengths, obtain probabilities both allowed forbidden channels. Adding quantities together, above two determined precisely plausible reasons inconsistencies results been pointed out.