Re-evaluation of the Beck et al. data to constrain the energy of the Th-229 isomer

2017/02/02 by Georgy A. Kazakov, Thorsten Schumm, Kazakov, Georgy A. +3
Engineering · Physics and Astronomy · #FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Nuclear Physics and Applications #Nuclear physics research studies #Nuclear reactor physics and engineering #nucl-ex

paper · pdf · doi:10.48550/arxiv.1702.00749

5 pages, 5 figures. Comments are highly welcome!

arxiv created 2017/02/02 · openalex publication_date 2017/02/02 · arxiv updated 2017/02/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The presently accepted value of the energy splitting of the Th-229 ground-state doublet has been obtained on the basis of undirect gamma spectroscopy measurements by Beck et al., Phys. Rev. Lett. 98, 142501 (2007). Since then, a number of experiments set out to measure the isomer energy directly, however none of them resulted in an observation of the transition. Here we perform an analysis to identify the parameter space of isomer energy and branching ratio that is consistent with the Beck et al. experiment.

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