Electronic bridge process in 229Th^+

TL;DR

This study investigates how atomic electrons influence the nuclear transition in 229Th+ via the electronic bridge process, developing a formalism applicable to unknown transition frequencies and calculating energy levels and g factors of high-lying states.

Contribution

The paper introduces a formalism for analyzing the electronic bridge process in 229Th+ applicable to any nuclear transition frequency and provides calculated energy levels and g factors for high-lying states.

Findings

Identified energy levels and g factors of high-lying even-parity states.

Developed a formalism for nuclear transition analysis with unknown frequencies.

Analyzed the electronic bridge process in 229Th+.

Abstract

We have studied the effect of atomic electrons on the nuclear transition from the isomeric {229m}Th state to the ground {229g}Th state in {229}Th+ due to the electronic bridge process. The exact value of the nuclear transition frequency is unknown so far; therefore, we have developed a formalism that can be used for any nuclear transition frequency. We have calculated positions of several high-lying even-parity states which are not presented in experimental atomic spectra databases. We have found their energy levels and g factors.