Investigation of the excited states of 114Sn using the GRIFFIN spectrometer at TRIUMF

Abstract

The semi-magic

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

using the competing ${\beta }^{+}$ decay and electron capture of a radioactive beam of

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

, 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 ${\beta }^{+}$ decay study but not placed in the

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

.