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Title: A study of the γ-rays from the self-conjugate nuclei ⁶⁴Ge and ⁴⁸Cr using n-γ coincidence techniques
Author: Ooi, Stanley Seong Ling
Awarding Body: University of Oxford
Current Institution: University of Oxford
Date of Award: 1986
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A neutron multiplicity detector system has been developed to study weak pure neutron evaporation channels from heavy-ion reactions. Such a system allows us to study nuclei far away from the line of β-stability - in particular, self-conjugate nuclei where the shell-effects for protons and neutrons are in phase and their combined effects may drive the nucleus towards superdeformation. The system consists of a neutron wall - 4 large volume Ge(Li) γ-ray detectors positioned as close as possible to the target. Neutron-gamma coincidences were recorded and neutron multiplicity events could be extracted from the data. Rejection of gamma-ray events in the neutron detectors was achieved by time-of-flight and pulse shape discrimination methods. A surface barrier detector at 0⁰ allowed a further rejection of charged particle events - especially events which feature neutrons as well.
Supervisor: Sinclair, David Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available
Keywords: Gamma rays ; Neutrons ; Germanium ; Chromium Nuclear physics