Elastic scattering of polarized deuterons from Al, Si and Ni between 7 and 11 MeV |
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Authors: | P Schwandt and W Haeberli |
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Institution: | University of Wisconsin, Madison 53706, Wisconsin, USA |
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Abstract: | Polarization parameters have been determined for deuteron elastic scattering from 27Al, Si and 60Ni at energies between 7 and 11 MeV and laboratory scattering angles from 30° to 135°. The vector polarization, iT11, and two tensor parameters T20 and T22, were measured by scattering polarized and unpolarized deuterons which were obtained from a tandem accelerator. The largest polarization was |iT11| ≈ 0.3 and |T20| ≈ 0.2 for 27Al at 11 MeV. For 60Ni, the observed polarizations were substantially smaller. Angular distributions of the unpolarized cross section were also measured for 27Al and Si. An optical-model analysis of the polarization and cross-section data was performed. The vector polarization was reproduced reasonably well by a vector spin-orbit coupling of similar strength as found for nucleon scattering. A tensor interaction appears to be needed to account for the observed tensor polarizations. |
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Keywords: | Nuclear reactions |
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