Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.651968
Title: Neutron polarization studies with the D(d,n)3He reaction
Author: Hall, Alasdair Stewart
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 1976
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Abstract:
This thesis establishes the trend of neutron polarization in the D(d,n)3He reaction in the 3 to 5.5 MeV energy region where discrepancies in previous measurements exist. Determinations of the differential polarization at 290 and 460 keV and the analysis of available data below 1 MeV in terms of the T a sin2n 9 expansion gives a reliable parameterization of the reaction characteristics where none was previously available. The dependence of the neutron polarization on energy and angle has thus been established. The use of an experimental approach and apparatus consistent with other measurements at neighbouring energies further enhances the acceptability of this data. An interpretation is performed in the context of various models of the reaction. Further investigations explore the use of the ratio of asymmetries in backward and forward scattering of 3 MeV neutrons by helium as a means of selecting between the various analysing power curves for n- He scattering. The implications of the agreement with the phase shifts of Austin et al are considered and proposals for further studies are made. Important in attaining these objectives were a variety of modifications to detectors and improvements in the modes of data collection which enabled measurements of good statistical accuracy to be obtained under stable accelerator conditions.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.651968  DOI: Not available
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