Elastic scattering of + and - from Ca40 at 64.8 MeV

S. H. Dam*, R. D. Edge, B. M. Preedom, M. Hamm, R. L. Burman, R. Carlini, R. P. Redwine, M. A. Yates, M. Blecher, K. Gotow, F. E. Bertrand, E. E. Gross, M. A. Moinester

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Angular distributions of + and - elastic scattering on Ca40 at 64.8 MeV are presented. The data are analyzed using a first-order, nonlocal optical model based on a Kisslinger t 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 Ca40 at 64.8 MeV; angular distributions, 15°<lab<127°; optical model analysis.

Original languageEnglish
Pages (from-to)2574-2582
Number of pages9
JournalPhysical Review C - Nuclear Physics
Issue number5
StatePublished - 1982


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