Elsevier

Nuclear Physics A

Volume 369, Issue 3, 26 October 1981, Pages 425-452
Nuclear Physics A

20Ne(p, p0)20Ne and states of 21Na

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Abstract

Cross-section and analyzing power angular distributions have been measured for 20Ne(p, p)20Ne and 20Ne(p, p1)20Ne(1.63 MeV) for proton energies between 3.7 and 7.9 MeV. The measurements were made in 25 keV intervals between 3.7 and 4.4 MeV, and in 10 keV intervals over most of the region between 4.4 and 7.9 MeV. A phase-shift analysis of the elastic-scattering data has yielded resonance parameters for thirty-three levels in 21Na in the excitation energy region 6.0–9.9 MeV. Some of the strong even-parity resonances can be understood within the framework of the Nilsson model or the shell model. These resonances are also predicted by a macroscopic coupled-channels calculation involving rotational excitation of the 2+ and 4+ states of 20Ne.

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    Work supported in part by ININ and CONACyT, México, and by the US National Science Foundation.

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