Mathematics – Logic
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..apr.d1039l&link_type=abstract
American Physical Society, April Meeting, 2003, April 5-8, 2003 Philadelphia, Pennsylvania, MEETING ID: APR03, abstract #D1.039
Mathematics
Logic
Scientific paper
The cross section and polarization for nucleon Oxygen scattering has a minimum at large angles and low energies that cannot be fitted with phenomenological or microscopic local optical potentials, however it has been well fitted with a parity dependent (local) optical potential [1]. It is shown here that this parity dependence is due to channel coupling, i.e., to the dynamic excitation of the target nucleus during the scattering process, and is not due to the exchange process of the incident nucleon with the target nucleons [2], and is also not due to alpha-particle clustering in the target nucleus [3]. The argument is based on the investigation of local equivalent optical potentials in a "toy" model coupled channels calculation [4]. [1] S. G. Cooper, Nucl. Phys. A 618, 87 (1997); [2] G. H. Rawitscher, D. Lukaszek, R. S. Mackintosh and S. G. Cooper, Phys. Rev. C 49, 1621 (1994); D. Lukaszek, G. H. Rawitscher, BAPS, (1999); [3] D. Lukaszek and G. H. Rawitscher, BAPS 47, 92 (2002); [4] H. Fiedeldey, R. Lipperheide, G. H. Rawitscher and S. A. Sofianos, Phys. Rev. C 45, 2885 (1992).
Lukaszek Donald
Rawitscher George H.
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