Abstract
Angular distributions of and elastic scattering on at 64.8 MeV are presented. The data are analyzed using a first-order, nonlocal optical model based on a Kisslinger matrix with an off-shell form factor. This model is unable to fit the data for any value of the off-shell parameter unless the nuclear matter radius is allowed to vary from that derived from electron scattering. The resulting best-fit radii are as much as 0.40 fm larger than the electron scattering value for and 0.55 fm larger for . For a given the best fit radius is also consistently larger by about 0.2 fm than that for . In addition, the fits show no significant preference for any value of between 400 and 900 MeV/c. Inclusion of the normally omitted second-order potential terms in the optical model does not significantly alter the results.
NUCLEAR REACTIONS and elastic scattering from at 64.8 MeV; angular distributions, ; optical model analysis.
- Received 27 July 1981
DOI:https://doi.org/10.1103/PhysRevC.25.2574
©1982 American Physical Society