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- W1963736174 abstract "Transition amplitudes for inelastic nucleon scattering from nuclei are developed using an antisymmetrized distorted wave approximation. Nuclear states are specified by a microscopic model of nuclear structure. The transition operator includes central tensor and core polarization terms. A collective model approximation is used to define the core polarization contribution. The central force has a Yukawa form while the tensor force is chosen to have a modified Yukawa shape. Inelastic proton scattering to the first excited state of 89Y is analysed for incident energies of 18.8, 24.5 and 61.2 MeV. In addition, analysis of the inelastic scattering of 61.4 MeV protons to the 5− state of 90Zr at 2.315 MeV excitation is reported. Good fits to the data are obtained. Large effects due to exchange matrix elements are noted. Strong variations in results are seen when the central interaction singlet and triplet strengths are varied. The tensor force plays an important role in modifying the triplet contributions. For the triplet odd channel required in our analysis, tensor force matrix elements are 10 % of the central force values. With a more realistic form, this is expected to increase and may be 30 %. The fits at lower energy require a density dependence of the effective interaction. This complements such requirements in recent spectroscopy studies. Also the importance of small-amplitude configuration mixing is evident. The core polarization contributions that represents the summation of such terms are necessary features of the analyses. This is particularly so in the analysis of the 90Zr reaction." @default.
- W1963736174 created "2016-06-24" @default.
- W1963736174 creator A5037808011 @default.
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- W1963736174 date "1971-03-01" @default.
- W1963736174 modified "2023-10-01" @default.
- W1963736174 title "Antisymmetrized distorted wave theory of inelastic nucleon scattering" @default.
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- W1963736174 doi "https://doi.org/10.1016/0375-9474(71)90495-7" @default.
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