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Title: The use of strip detectors in the study of breakup reactions
Author: El-Mohri, Youcef
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 1992
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The breakup of 110.8 MeV 10B has been studied for the reaction 10B+ 58Ni where kinematically complete measurements were obtained on the breakup channel p_9Be. In order to obtain data with high statistical quality and good accuracy the breakup fragments are detected in coincidence using large area silicon strip detectors in combination with a magnetic spectrometer. To assess the qualities and performances of the strip detectors, a preliminary experiment dealing with the breakup of 8Be nuclei was performed and in which a new type of 8Be detection system has been developed offering a very large effective solid angle. 8Be nuclei, which are unstable, were produced in the 12C(9Be,8Be) and 208Pb(9Be,8Be) reactions with 90 MeV 8Be projectiles. In the breakup of 10B, evidence for the direct breakup mechanism in the 58Ni(10B,9Beg.s+ p) reaction has been obtained with possible contributions from the sequential mechanism through the 10B excited states, 7.48 MeV and 7.75 MeV. A Coulomb excitation calculation for this reaction is presented and shown to be consistent with the shape, but not the magnitude of the energy spectra within the statistical accuracy of the data.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available