Back-angle elastic alpha scattering fromand
- 1 November 1975
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review C
- Vol. 12 (5) , 1447-1451
- https://doi.org/10.1103/physrevc.12.1447
Abstract
Excitation functions and angular distributions for elastic scattering from target nuclei around have been measured in an effort to obtain a precise picture of the cross sections at backward angles. Excitation functions between MeV for + and + have been measured in steps of 500 keV or less at angles between 141° and 176° (lab). Near 180°, narrow (about 1 MeV) minima, with a drop in cross section by more than an order of magnitude, are observed around MeV for the + and + elastic scattering. A similar, but less pronounced, structure is seen in the excitation function for +. Angular distributions between 48.5° and 176° (lab) measured at several energies in 2.5° steps show a regular diffractionlike pattern over the entire angular range. A standard four-parameter Woods-Saxon potential is found to be sufficient to provide a detailed fit to the experimental data including the minima in the excitation functions at back angles.
Keywords
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