1. Search for and ECEC processes in 112Sn and decay of 124Sn to the excited states of 124Te
- Author
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S. I. Konovalov, I. Vanyushin, V. I. Umatov, A. S. Barabash, Ph. Hubert, and A. Nachab
- Subjects
Physics ,Nuclear and High Energy Physics ,010308 nuclear & particles physics ,Degenerate energy levels ,Analytical chemistry ,chemistry.chemical_element ,Context (language use) ,7. Clean energy ,01 natural sciences ,Beta decay ,Orders of magnitude (time) ,chemistry ,Double beta decay ,Excited state ,0103 physical sciences ,Decay product ,010306 general physics ,Tin - Abstract
Limits on β + EC and ECEC processes in 112Sn and on β − β − decay of 124Sn to the excited states of 124Te have been obtained using a 380 cm3 HPGe detector and an external source consisting of natural tin. A limit with 90% C.L. on the 112Sn half-life of 0.92 × 10 20 y for the ECEC(0ν) transition to the 0 3 + excited state in 112Cd (1871.0 keV) has been established. This transition is discussed in the context of a possible enhancement of the decay rate by several orders of magnitude given that the ECEC(0ν) process is nearly degenerate with an excited state in the daughter nuclide. Prospects for investigating such a process in future experiments are discussed. The β − β − decay limits for 124Sn to the excited states of 124Te were obtained on the level of (0.8–1.2) × 1021 y at the 90% C.L.
- Published
- 2008