Elastic Scattering of 14 MeV Protons by Deuterons and by Protons

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Abstract
The differential cross sections for the elastic scattering of 13.93 MeV protons by deuterons were measured with accuracy varying from 1 to 3% at angles from 12° to 164° in the center-of-mass system. A shallow Coulomb-nuclear interference minimum near 17° was observed. The angular distribution is in good agreement with that of neutrons scattered by deuterons at 14 MeV, although the p – d cross sections seem systematically a little smaller than the n – d cross sections at backward angles. For forward angles, the experimental results contradict with the prediction of the existing theory. The small-angle p – d elastic scattering at 10.14 MeV was also investigated and a similar shallow Coulomb-nuclear interference was observed, in contrast with the theoretical curve of Christian and Gammel. The p – p scattering experiment at 14.16 MeV is also described. Measurements were made with accuracy of 1 to 2% for angles from 30° to 114° in the center-of-mass system.

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