Elsevier

Nuclear Physics A

Volume 140, Issue 1, 5 January 1970, Pages 33-48
Nuclear Physics A

Spin-dependent effects in the inelastic scattering of high-energy protons

https://doi.org/10.1016/0375-9474(70)90882-1Get rights and content

Abstract

The polarizations and some cross sections of protons with incident energy in the neighbourhood of 155 MeV exciting low-lying states in 12C, 24Mg, 28Si, 32S and 40Ca are analysed in the framework of collective model DWBA. The crucial ingredient of the calculations is the presence of a deformed spin-dependent interaction of the full Thomas form. With the exception of the 5 transition in 40Ca, good agreement with the polarization data at forward scattering angles is obtained when this interaction is used; the fits become extremely bad if the Thomas term is ignored or is replaced by a popular approximate form. Comparisons are also made with the polarization predictions of the DWIA method. In general, DWIA fits at forward angles are much less satisfactory than those of the DWBA with the full Thomas term. A discussion of the interrelation between the two methods of calculation is given.

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    Supported in part by the U.S. Atomic Energy Commission.

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