Spectroscopic studies of neutron-rich ${}^{129}$In and its $\beta$-decay daughter, ${}^{129}$Sn, using the GRIFFIN spectrometer

Abstract

The $\beta$-decay of neutron-rich ${}^{129}$In into ${}^{129}$Sn 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 $\beta$-decaying isomers. The level scheme of ${}^{129}$Sn has been expanded with thirty-one new $\gamma$-ray transitions and nine new excited levels, leading to a re-evaluation of the $\beta$-branching ratios and level spin assignments. The observation of the $\beta$-decay of the (29/2${}^{+}$) 1911-keV isomeric state in ${}^{129}$In is reported for the first time, with a branching ratio of 2.0(5)$\%$.

References in corpus (6)

• Magic numbers in exotic nuclei and spin-isospin properties of {\it NN} interaction
• The impact of individual nuclear properties on $r$-process nucleosynthesis
• Neutron Capture Rates near A=130 which Effect a Global Change to the r-Process Abundance Distribution
• The GRIFFIN Facility for Decay-Spectroscopy Studies at TRIUMF-ISAC
• Neutron capture on 130Sn during r-process freeze-out
• The GRIFFIN Data Acquisition System

Cited by in corpus (1)

• Isomeric states of fission fragments explored via Penning trap mass spectrometry at IGISOL