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Abstract
| We propose to use fast-timing and spectroscopy to study five nuclei including the doubly magic $^{132}$Sn and its four neighbours: two-neutron hole $^{130}$Sn, one-neutron hole $^{131}$Sn, one-neutron particle $^{133}$Sn and two-neutron particle $^{134}$Sn. There is an increasing interest in these nuclei since they serve to test nuclear models using state-of-the-art interactions and many body approaches, and they provide information relevant to deduce single particle states. In addition properties of these nuclei are very important to model the astrophysical $\textit{r-process}$. The present ISOLDE facility provides unique capabilities to study these Sn nuclei populated in the $\beta$-decay of In isomers, produced from a UCx target unit equipped with neutron converter and ionized with RILIS, capable of selective isomer ionization. The increased production yields for $^{132}$In are estimated to be 200 larger than in the previous work done at OSIRIS. We will use the recently commissioned Isolde Decay Station (IDS), slightly modified to improve the efficiency of fast-timing measurements. Compared to earlier measurements in this region the sensitivity will be enhanced by the use of the highly-efficient clover-type Ge detectors and the new generation fast-timing LaBr$_{3}$(Ce) crystals. |