Metastable level properties of the excited configuration $4p^{6}4d^{8}4f$

TL;DR

This study investigates the properties of metastable levels in rhodium-like ions with specific excited configurations, using ab initio calculations to analyze energies, transition probabilities, and lifetimes across a range of atomic numbers.

Contribution

It provides detailed ab initio calculations of metastable level energies and transition probabilities for rhodium-like ions, highlighting the importance of higher multipole transitions.

Findings

Systematic trends in radiative lifetimes from Z=60 to Z=92.

Higher multipole transitions significantly affect metastable level lifetimes.

Calculated lifetimes show consistent behavior across the studied ions.

Abstract

Metastable levels in rhodium-like ions with the ground configuration $4p^{6}4d^{9}$ and the excited configurations $4p^{6}4d^{8}4f$ and $4p^{5}4d^{10}$ are investigated. The {\sl ab initio} calculations of the level energies, radiative multipole transition probabilities are performed in a quasirelativistic Hartree-Fock approximation employing an extensive configuration interaction based on quasirelativistic transformed radial orbitals. A systematic trends in behavior of calculated radiative lifetimes of the metastable levels are studied for the ions from $Z=60$ to $Z=92$. The significance of the radiative transitions of higher multipole order ($M2$ and $E3$) for the calculated radiative lifetimes is demonstrated and discussed.