β decay and β -delayed neutron decay of the N=82 nucleus In82 49131

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

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7 Scopus citations

Abstract

The half-lives of three β-decaying states of In8249131 have been measured with the GRIFFIN γ-ray spectrometer at the TRIUMF-ISAC facility to be T1/2(1/2-)=328(15)ms, T1/2(9/2+)=265(8)ms, and T1/2(21/2+)=323(55)ms, respectively. The first observation of γ rays following the βn decay of In131 into Sn130 is reported. The β-delayed neutron emission probability is determined to be P1n=12(7)% for the 21/2+ state and 2.3(3)% from the combined 1/2- and 9/2+ states of In8249131 observed in this experiment. A significant expansion of the decay scheme of In131, including 17 new excited states and 35 new γ-ray transitions in Sn8150131 is also reported. This leads to large changes in the deduced β-branching ratios to some of the low-lying states of Sn131 compared to previous work with implications for the strength of the first-forbidden β transitions in the vicinity of doubly magic Sn8250132.

Original languageEnglish (US)
Article number045805
JournalPhysical Review C
Volume99
Issue number4
DOIs
StatePublished - Apr 26 2019
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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