β decay and β-delayed neutron decay of the N=82 nucleus 13149In82

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

The half-lives of three β-decaying states of 13149In82 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 131In into 130Sn 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 13149In82 observed in this experiment. A significant expansion of the decay scheme of 131In, including 17 new excited states and 35 new γ-ray transitions in 13150Sn81 is also reported. This leads to large changes in the deduced β-branching ratios to some of the low-lying states of 131Sn compared to previous work with implications for the strength of the first-forbidden β transitions in the vicinity of doubly magic 13250Sn82.

Detaljer

Författare
  • R. Dunlop
  • C. E. Svensson
  • Corina Andreoiu
  • G. C. Ball
  • Nikita Bernier
  • H. Bidaman
  • V. Bildstein
  • M. Bowry
  • D. S. Cross
  • Iris Dillmann
  • M. R. Dunlop
  • F. H. Garcia
  • A B Garnsworthy
  • P. E. Garrett
  • G Hackman
  • J. Henderson
  • James Measures
  • D. Muecher
  • B. Olaizola
  • K. Ortner
  • Och 9 andra
  • Joochun Park
  • C. M. Petrache
  • J. L. Pore
  • J. K. Smith
  • D. Southall
  • M. Ticu
  • J. Turko
  • K. Whitmore
  • T. Zidar
Enheter & grupper
Externa organisationer
  • University of Guelph
  • Simon Fraser University
  • TRIUMF
  • Technical University of Munich
  • University of Surrey
  • Michigan State University
  • Yale University
  • Lawrence Livermore National Laboratory
  • Istituto Nazionale di Fisica Nucleare, Sezione di Padova INFN
  • Inst. de Physique Nuclaire d'Orsay
  • Lawrence Berkeley National Laboratory
  • Reed College
  • University of Chicago
  • University of British Columbia
  • University of Victoria
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Subatomär fysik
Originalspråkengelska
Artikelnummer045805
TidskriftPhysical Review C: covering nuclear physics
StatusPublished - 2019
PublikationskategoriForskning
Peer review utfördJa