Identification of<i>n</i>= 4, Δ<i>n</i>= 0 transitions in the spectra of nickel-like and zinc-like ions through tin

Abstract

Spectra of multicharged ions have been analyzed for all stable elements in the period from Z = 37 (Rb) to Z = 50 (Sn), in the region of n = 4, Δn = 0 transitions. The transition arrays (4s2 + 4p2 + 4s4d)-4s4p, 4s4f and 3d94s, 3d94d-3d94p have been identified in zinc-like and nickel-like ions respectively, with the help of the ab initio relativistic parametric potential method and of the Slater-Condon method with generalized least-squares fits of energy parameters.