Speaker
Description
The experimental studies of semi-magic Sn ($Z$ = 50) isotopes continue to be of significant interest as they provide valuable insights into the fundamental nucleon-nucleon interactions and offer suggestions for improvements in theoretical models.
The mid-shell Sn isotopes ($A$ = 112-122) exhibit shape coexistence, which is characterized by the presence of intruder proton 2p-2h deformed bands built on the excited 0$^+$ states in the vicinity of the ground-state bands.
Recent spectroscopic studies of these mid-shell nuclei have reported different bandheads (viz., the 0$^+_2$ state in $^{118}$Sn and the 0$^+_3$ state in $^{116}$Sn) for the deformed 2p-2h band in these isotopes. In order to investigate how the properties of these shape-coexisting structures evolve along the Sn chain, a comprehensive study of neighboring $^{114}$Sn nucleus was performed, incorporating gamma-ray spectroscopy, conversion electron measurements, and lifetime measurements.
The excited states in $^{114}$Sn were populated via the $\beta^+$ decay of $^{114}$Sb, which was produced at the TRIUMF-ISAC facility. The gamma rays emitted following the $\beta$ decay were detected using the GRIFFIN spectrometer, consisting of 15 Compton-suppressed HPGe clover detectors. Additionally, a fast scintillator and an array of five Si(Li) detectors were used for $\beta$-particle and conversion-electron spectroscopy, respectively, while eight LaBr$_3$(Ce) scintillators were employed for fast timing measurements.
Preliminary analysis reveals evidence of several new transitions in $^{114}$Sn. Specific spectroscopic results pertaining to the level scheme, angular correlations and lifetime measurements will be presented.
| Keyword-1 | Nuclear Structure |
|---|---|
| Keyword-2 | Beta Decay Spectroscopy |
