Investigation of the Excited States of ${}^{114}\mathrm{Sn}$ Using the GRIFFIN Spectrometer at TRIUMF

Abstract

The semi-magic ${}^{110-122}\mathrm{Sn}$ isotopes display signs of shape coexistence in their excited $0^{+}$ states, which, in contrast to the spherical $0^{+}$ ground states, are deformed. This paper investigates the nuclear structure of ${}^{114}\mathrm{Sn}$ using the competing $β^+$ decay and electron capture of a radioactive beam of ${}^{114}\mathrm{Sb}$ produced at the TRIUMF-ISAC facility using the GRIFFIN spectrometer. This study will allow for an in-depth understanding of the excited $0^{+}$ states in ${}^{114}\mathrm{Sn}$, by focusing on their decay patterns. In the present experiment, transitions at 856.2-keV and 1405.0-keV, which were observed in an earlier $β^+$ decay study but not placed in the ${}^{114}\mathrm{Sn}$ level scheme, have been assigned to the level scheme in connection to the $0_3^{+}$ level at 2156.0-keV. Properly assigning these transitions refines the level scheme and enhances our understanding of the nuclear structure in ${}^{114}\mathrm{Sn}$.