Correlation effects for nl-n′l′ transitions in nine isoelectronic sequences of silver ions

Intercombination Transitions in the n = 4 Shell of Zn-, Ga-, and Ge-Like Ions of Elements Kr through Xe

“…For the ground term fine structure, the experimental data compilation for Z = 35 to 49 by Curtis and Reader [92], Reader et al [93], Litzén and Reader [94], Litzén and Zeng [95] and the semi-empirically adjusted computation by Biémont and Quinet [69] largely agree with each other; the combined dataset can be fitted by a polynomial and thus also extrapolated. For the quartet term, the computation by Biémont and Quinet [69] reaches up to Z = 49; their results can be augmented by other computational results for Z = 35 [96] (from MCDF calculations for Ge II through Nb XI)), Z = 47 [91] and Z = 53 [57]. The measurements, data compilations and extrapolations by atomic structure calculations (using the Cowan code with adjustable parameters) by Litzén, Reader and Zeng [94,95] reach from Rb (Z = 37) to In (Z = 49); they are reproduced by (adjusted) computations [66,69] to within 0.3% to 0.7% at the high-Z end of this range.…”

“…There also are computations that address individual elements (for some Zn-like ions, see, for example, [90,91]), but these do not help with learning about isoelectronic trends. Fortunately, for Zn-like ions, there are by now results of computations available that span the whole isoelectronic sequence with its many elements [12,13].…”