Elsevier

Nuclear Physics A

Volume 437, Issue 1, 22 April 1985, Pages 226-238
Nuclear Physics A

Nearside-farside analysis of aligned heavy-ion elastic scattering

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Abstract

The nearside-farside decomposition of scattering amplitudes is brought to bear upon analysing powers for polarized heavy-ion elastic scattering. Results for aligned 7Li on 58Ni and on 12C show that at an incident centre-of-mass energy slightly above the Coulomb barrier all observables provide a clear signature of a nearside-dominated process. This is in consonance with the so-called shape-effect ideology which relates second-rank analysing powers with the orientation of aligned, deformed projectiles solely at the point of closest approach. At higher energies, however, the advent of Fraunhofer interference as observed in cross section and analysing powers is found to be coupled with increasing deviations from the shape-effect relations.

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    Supported in part by Bundesministerium für Forschung und Technologie, Bonn.

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