Hyperfine induced transitions probabilities from $4f^{14}5s5p~^3\mathrm{P}^o_{0,2}$ states in Sm-like ions

TL;DR

This paper calculates hyperfine induced transition probabilities in highly charged Sm-like ions using advanced quantum mechanical methods, revealing dominant decay channels and the importance of specific transitions across a range of atomic numbers.

Contribution

It provides the first comprehensive calculations of hyperfine induced transition rates for Sm-like ions from Z=79 to Z=94, including electron correlation, Breit, and QED effects.

Findings

Hyperfine induced transition is dominant for the first excited state in ions Z=79 to Z=94.

M1 transition from the ^3P^o_2 state is the main decay channel for Z ≥ 82.

Transition probabilities vary significantly across the studied range, influencing decay pathways.

Abstract

The hyperfine induced $4f^{14}5s5p~^3\mathrm{P}^o_{0,2}~-~4f^{14}5s^2~^1\mathrm{S}_0$ transition probabilities for highly charged Sm-like ions are calculated in the framework of the multi-configuration Dirac-Hartree-Fock method. Electron correlation, the Breit interaction and quantum electrodynamical (QED) effects are taken into account. For ions ranging from $Z=79$ to $Z=94$, $4f^{14}5s5p~^3\mathrm{P}^o_{0}$ is the first excited state, and the hyperfine induced transition is an dominant decay channel. For the $4f^{14}5s5p~^3\mathrm{P}^o_{2}$ state, the hyperfine induced transition (HIT) rates of Sm-like ions with $Z=82-94$ are reported as well as the magnetic dipole (M1) $^3\mathrm{P}^o_2 ~-~ ^3\mathrm{P}^o_1$, the electric quadrupole (E2) $^3\mathrm{P}^o_2 ~-~ ^3\mathrm{P}^o_{0,1}$, and the magnetic quadrupole (M2) $^3\mathrm{P}^o_2 ~-~ ^1\mathrm{S}_0$ transition probabilities. It is found that M1 transition from the $4f^{14}5s5p~^3\mathrm{P}^o_2$ state is the most important decay channel in this range on $Z \ge 82$.