Contribution of alpha cluster exchange to elastic and inelastic 16O + 20Ne scattering

  • Angular distributions for elastic and inelastic transitions in 20Ne + 16O scattering have been measured at E(20Ne)=50 MeV. For the 0+, 2+, and 4+ members of the 20Ne ground-state rotational band, the angular distributions exhibit pronounced backward peaking characteristic of an alpha -cluster exchange mechanism. The analysis of the ground-state transition in the first-order elastic transfer model yields no satisfactory fit although microscopic cluster form factors and full recoil corrections are employed. A coupled channels calculation for the 0+, 2+, and 4+ transitions reveals very strong coupling effects, indicating that the coherent superposition of first-order optical model and distorted-wave Born-approximation amplitudes may not be an adequate model for these reactions. NUCLEAR REACTIONS 16O(20Ne, 16O) and 16O(20Ne, 20Ne), elastic and inelastic transfer; E=50MeV; measured sigma (Ef , theta ); optical model + DWBA, and CCBA analyses.

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Author:Reinhard StockGND, U. Jahnke, D. L. Hendrie, J. Mahoney, C. F. Maguire, W. F. W. Schneider, D. K. Scott, G. Wolschin
Parent Title (German):Physical review C
Document Type:Article
Date of Publication (online):2005/09/21
Year of first Publication:1976
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2005/09/21
Page Number:8
First Page:1824
Last Page:1831
Source:Phys. Rev. C 14, 1824-1831 (1976), ©1976 The American Physical Society,
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht