Nuclear Structure of ³³S using the GALILEO γ-ray spectrometer

In this thesis the structure of ³³S nucleus was studied. Excited states of ³³S were populated up to 10 MeV via the fusion-evaporation reaction ²⠴Mg(¹²C, 2p1n)³³S using a 45-MeV ¹²C beam delivered by the Tandem XTU accelerator of the Legnaro National Laboratory. The detection system consisted of the γ-ray spectrometer GALILEO coupled to the Si-ball EUCLIDES and the Neutron Wall ancillary arrays. Using γ-γ coincidences the level scheme of ³³S was reconstructed. The positive-parity states up to spin 17/2+ and the negative-parity states up to spin 15/2- were observed. The relative intensity of the γ-ray transitions were determined, together with the branching ratios of the decaying levels. Where possible, the multipolarity of the γ transitions has been determined by means of the ADO ratios (Angular distribution from Orients states). The level scheme was interpreted in the frame of shell-model calculations using the PSDPF interaction.