Depolarization in proton inclusive inelastic scattering and in the (d,p) reaction on medium-weight nuclei |
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Authors: | WG Weitkamp I Halpern TA Trainor SK Lamoreaux ZY Liu |
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Institution: | University of Washington, Seattle, WA 98195, USA;Lanzhou University, Lanzhou, People''s Republic of China |
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Abstract: | The energy-averaged depolarization parameter Kyy′ has been measured for the inelastic scattering of 18 MeV protons from 54Fe, 63Cu and 92Mo at 45°, 90° and 135°, and for 14.35 MeV protons from 63Cu at 45° and 135°. In all cases Kyy′ varies from approximately unity for scattering with low energy loss to approximately zero for inelastic scattering to high excitation energies. The change from one of these values to the other occurs over a region ≈ 6 MeV wide centered at about 5 MeV excitation. A simple two-component model fits both the Kyy′ and inelastic crosssection data. Kyy′ has also been measured for the 54Fe(, )Fe reaction with 16 MeV deuterons incident. Here Kyy′ changes from approximately the maximum possible value, , to about zero in a 6 MeV region centered at roughly 13 MeV excitation. The (,) data can be fitted by an extension of the model used for the proton scattering data. |
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