| Autor: |
J.P. Theobald, G. Schrieder, Achim Richter, P. Wastyn, H. Genz, J.C. Van Staden, M. Mutterer |
| Rok vydání: |
1979 |
| Předmět: |
|
| Zdroj: |
Nuclear Physics A. 320:433-448 |
| ISSN: |
0375-9474 |
| DOI: |
10.1016/0375-9474(79)90200-8 |
| Popis: |
Cross sections for elastic scattering of 40 Ar on 40 Ca have been measured at energies E lab = 191, 236 and 272 MeV employing position-sensitive detectors and the method of kinematical coincidences. The experimental data are first compared with the ordinary and the generalized Fresnel models. Only the generalized Fresnel model describes the experimental data well. An optical model analysis with a Woods-Saxon potential yields an energy independent set of parameters ( V R = −21.76 MeV, r OR = 1.37 fm, a R = 0.45 fm; W 1 = −13.69 MeV, r 01 = 1.40 fm, a 1 = 0.36 fm) very similar to the one found in 40 Ca- 40 Ca scattering at corresponding energies. Values deduced for the total reaction cross sections for the three energies are in good agreement with those predicted by the generalized Fresnel model. The data are also compared with optical model calculations with the real part of the potential replaced by various microscopically determined potentials. The proximity, Fleckner-Mosel and the Krappe-Nix-Sierk potentials like the phenomenological optical model potential reproduce the measured data fairly well over several orders of magnitude. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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