QED calculation of transition probabilities in two-electron ions

TL;DR

This paper presents precise quantum electrodynamics calculations of transition probabilities for low-lying two-electron states in multicharged ions across a wide range of nuclear charges, using a line profile approach.

Contribution

It provides the first comprehensive QED-based calculations of transition probabilities for various two-electron ion states across Z=10 to 92, employing the line profile method.

Findings

Accurate transition probabilities for multiple two-electron states are obtained.

The calculations cover a broad range of nuclear charges from Z=10 to 92.

The line profile approach effectively describes decay processes in multicharged ions.

Abstract

Accurate QED calculation of transition probabilities for the low-lying two-electron configurations of multicharged ions is presented. The calculation is performed for the nondegenerate states $(1s2s) 3S1$, $(1s2p_{3/2}) 3P2$ ($M 1$ and $M 2$ transitions, respectively) and for the quasidegenerate states $(1s2p) 1P1$, $(1s2p) 3P1$ ($E 1$ transitions) decaying to the ground state $(1s1s) 1S0$. Two-electron ions with nuclear charge numbers $Z=10-92$ are considered. The line profile approach is employed for the description of the process in multicharged ions within the framework of QED.