Effect of atomic electrons on the7.6-eV nuclear transition inTh<mml:mprescripts/><mml:none/>2293+

2009/11/19 by S. G. Porsev, V. V. Flambaum · 4 citations
Chemistry · Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic and Molecular Physics #Chemistry #Physics #Radioactive Decay and Measurement Techniques #physics.atom-ph

paper · pdf · doi:10.1103/physreva.81.032504

published as Phys. Rev. A 81, 032504 (2010) · 7 pages, 2 figures

arxiv created 2009/11/19 · openalex publication_date 2010/03/08 · arxiv updated 2010/04/29 · openalex created_date 2017/08/17 · openalex updated_date 2026/08/05

Abstract

We have considered an effect of atomic electrons on the nuclear ^229mTh-^229gTh transition in ²²⁹Th³⁺ due to the electronic bridge process. Based on a recent experimental result we assumed the energy difference between the isomeric and the ground nuclear states to be equal to 7.6 eV. We have calculated the ratios of the electronic bridge process probability (\ensuremathΓ_EB) to the probability of the nuclear radiative transition (\ensuremathΓ_N) for the electronic 5f_5/2\ensuremath→6d_3/2,6d_5/2,7s and the 7s\ensuremath→7p_1/2,7p_3/2 transitions and found \ensuremathΓ_EB/\ensuremathΓ_N~0.01\ensuremath-0.1 for the former and \ensuremathΓ_EB/\ensuremathΓ_N~20 for the latter.

Citations

• Energy Splitting of the Ground-State Doublet in the NucleusTh<mml:mprescripts/><mml:none/>229
• Nuclear laser spectroscopy of the 3.5 eV transition in Th-229
• Enhanced sensitivity to the fine-structure-constant variation in the Th IV atomic clock transition
• Features of the low-energy level scheme of 229Th as observed in the α-decay of 233U
• Energy separation of the doublet of intrinsic states at the ground state ofTh<mml:mprescripts/>229
• Quantum Theory of Angular Momentum

Cited by

• Laser-induced electronic bridge for characterization of the229mTh → 229gTh nuclear transition with a tunable optical laser
• Expanding Nuclear Physics Horizons with the Gamma Factory
• The ²²⁹Th isomer: prospects for a nuclear optical clock
• Radiative lifetime and energy of the low-energy isomeric level inTh<mml:mprescripts/><mml:none/>229