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Proton polarization observables for the elastic and inelastic scattering of 500 MeV protons from Ca and Pb |
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| Authors: | B Aas E Bleszynski M Bleszynski M Hajisaeid G J Igo F Irom G Pauletta A Rahbar A T M WangC F Amann T A Carey W D Cornelius J B McClellandM Barlett G W HoffmannM Gazzaly |
| Institution: | Physics Department, University of California, Los Angeles, CA 90024, USA Los Alamos National Laboratory, Los Alamos, NM 87545, USA Physics Department, University of Texas, Austin, TX 78712, USA Department of Physics, University of Minnesota, Minneapolis, Minn. 55945, USA |
| Abstract: | Measurements for the elastic and inelastic scattering of 500 MeV protons from 40Ca and 208Pb at small momentum transfers are reported. The induced proton polarization P and the spin rotation parameter Q were measured for the elastic scattering. The spin rotation parameters DSS′, DSL′, DLL′, dLS′ and the induced polarization P were measured for transitions to the 3?(3.37 MeV) and 5?(4.48 MeV) states in 40Ca and the 3?(2.61 MeV) state in 208Pb. Comparisons of the data with the theoretical calculations were carried out in the framework of nonrelativistic and relativistic approaches. We extracted the spin-up and spin-down channels for the elastic scattering cross sections and found that predictions of the relativistic and nonrelativistic approaches agree well with the spin-up channel data and differ considerably in the spin-down channel. |
| Keywords: | Nuclear reactions |
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