Use this URL to cite or link to this record in EThOS: https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.751718
Title: The effect of the D-state of the deuteron in (d,p) reactions
Author: Santos, F. D.
Awarding Body: University of Surrey
Current Institution: University of Surrey
Date of Award: 1968
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Abstract:
The [3]D[1] state of the deuteron was taken into account in the distorted-wave Born approximation theory of deuteron stripping reactions. An approximation was used for the radial part of the D-wave in momentum space and the local energy approximation for finite range effects in the S-state part of the reaction scattering amplitude was extended to the D-state part. The angular dependence of the D-wave is accounted for exactly in the formalism of the distorted-wave theory. The resulting calculations at deuteron energies below 20 MeV show that the D-state effect in the differential cross-section is strongly dependent on l and j and its magnitude increases with l. The j-dependence of the effect improves significantly the theoretical fit to the small angle j-dependence observed in l = 3 angular distributions. This is particularly noticeable when configuration mixing effects are relatively small in both the 5-/2and the 7-/2 transitions. The j-dependence of the effect is also in qualitative agreement with the small angle j-dependence observed in Id transitions. However the inclusion of the D-state does not improve the agreement with the large angle j-dependence in l = 1 angular distributions. Using a surface reaction model it is shown that the magnitude of the D-state effect, relative to the S-state, in the angular distribution increases with the Q-value of the reaction and decreases with an increase in the target nucleus mass and the reaction energy. It is proved that in the absence of spin-dependent distortion the proton polarization is more sensitive than the deuteron efficiency vector to those j-dependent effects, introduced by the D-state, which do not obey the simple sign rule valid for the S-state contribution.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.751718  DOI: Not available
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