Scattering of polarised protons by Ni, Sr, Cd, In and Sn isotopes. II. Inelastic scattering-collective analysis

Abstract

For pt.I see ibid., vol.15, no.2, p.181 (1989). Inelastic scattering of polarised protons (Ep=20.4, 24.6 MeV) by 60,64Ni, 86,88Sr, 110,112,114Cd, 115In and 116,118,120,122,124Sn has been investigated. Except for the case of 60Ni, only for the 21+ and 31- states could statistically reliable data be obtained. The data have been analysed with the DWBA employing a collective form factor. The agreement between experiment and theory is fairly good, although the experimental data tend to exhibit somewhat more structure than the theory predicts. For 60Ni also data for higher excited states have been obtained. These have been analysed with moderate success by coupled-channels calculations. The deformation parameters found for the Sn isotopes can be described in terms of the IBA model. Some suggestions for the applications of the IBA model in inelastic scattering are given.

Scattering of polarised protons by Ni, Sr, Cd, In and Sn isotopes. I. Elastic scattering

“…for the experiment on 12'Sn at 24.6MeV we found with the geometrical parameters of Beer [lo] a normalisation that was a factor of 1.24 larger than the normalisation found with our GF parameters of $ 5 (see figure 7). This normalisation also affects the deformation parameters of the inelastic scattering (see paper XI, [21]).…”

“…In the case of Ni it is better to use the BF parameters in the DWBA calculations, but for the Sn and Cd isotopes the BF and GF parameters are nearly equally good. So for the analyses of inelastic scattering from these nuclei in part I1 of this series of papers [21] we shall use the GF set.…”

“…We see that the x2 values of the cc fit are larger than those for the standard optical-model fit. This is caused by the difficulty of fitting the slope of the differential cross section for the 2 : state which here also influences the fit to the ground state (see figure 2 of the companion paper on inelastic scattering [21]).…”

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