Spectroscopic studies of neutron-rich in 129 and its β -decay daughter, Sn 129, using the GRIFFIN spectrometer

F. H. Garcia*, C. Andreoiu, G. C. Ball, N. Bernier, H. Bidaman, V. Bildstein, M. Bowry, D. S. Cross, M. R. Dunlop, R. Dunlop, A. B. Garnsworthy, P. E. Garrett, J. Henderson, J. Measures, B. Olaizola, K. Ortner, J. Park, C. M. Petrache, J. L. Pore, K. RaymondJ. K. Smith, D. Southall, C. E. Svensson, M. Ticu, J. Turko, K. Whitmore, T. Zidar

*Corresponding author for this work

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4 Scopus citations

Abstract

The β decay of neutron-rich In129 into Sn129 was studied using the GRIFFIN spectrometer at the ISAC facility at TRIUMF. The study observed the half-lives of the ground state and each of the β-decaying isomers. The level scheme of Sn129 has been expanded with thirty-one new γ-ray transitions and nine new excited levels, leading to a reevaluation of the β branching ratios and level spin assignments. The observation of the β decay of the (29/2+) 1911-keV isomeric state in In129 is reported for the first time, with a branching ratio of 2.0(5)%.

Original languageEnglish (US)
Article number024310
JournalPhysical Review C
Volume103
Issue number2
DOIs
StatePublished - Feb 2021

Funding

The authors would like to thank the GRSI collaboration at TRIUMF for their aid during the course of this work. This work was supported, in part, by the Natural Sciences and Engineering Research Council of Canada (NSERC). Phase I of the GRIFFIN spectrometer was funded by the Canadian Foundation of Innovation (CFI), TRIUMF, and the University of Guelph. TRIUMF receives funding from the Canadian Federal Government via a contribution agreement with the National Research Council Canada (NRC). C.E.S. acknowledges support from the Canada Research Chairs program.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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