Lonardi, Alberto The neutron wall detector coupled to GALILEO gamma-ray array for the study of proton-rich nuclei. [Laurea triennale]
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This work has the aim to present the apparta used in Legnaro National Laboratories for experiment of fusion-evaporation processes for the study of proton rich nuclei. In the first part we gave a look to the experiment done, involving a fusion-evaporation reaction with a beam of 24Mg and a Target of 12C (for a compound nucleus of 36Ar), and then studied the proprieties of the used apparata for the detection of neutrons with scintillators, giving a look on neutron wall and GALILEO separatly and coupled and explaining how measures of time of flight, totale collected charge and zero crossover can be used in order to identify neutrons and discriminate them from gamma radiation. In the second part we shown how those data are used to impose a neutron gate in order to select neutron channels from all the possible evaporation channels. We then focused our attention on one particular channel of evaporation, the 31S, and tried in first instance to identify it and then to reconstruct his level scheme using gamma-gamma matrices. In conclusion we saw the well working of this method of identification and gave a brief look to the future of those experiments.
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