Inelastic scattering and nucleon transfer in the system232Th+206Pb near the Coulomb barrier |
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Authors: | G Eckert K Stelzer R O Nelson Th W Elze Th Happ H J Wollersheim H Emling H Grein W Henning R Kulessa E Lubkiewicz Ch Lauterbach |
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Institution: | 1. Institut für Kernphysik, Universit?t Frankfurt, W-6000, Frankfurt am Main, Germany 5. Gesellschaft für Schwerionenforschung, W-6100, Darmstadt, Germany 8. Sektion Physik, Ludwig-Maximilians Universit?t, W-8000, München, Germany
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Abstract: | Nucleon transfer accompanied by Coulomb excitation was studied in the system206Pb+232Th atE Lab=6.4 MeV/u. Particle-particle-gamma coincidence techniques were used to identify excited states of reaction products populated through inelastic scattering and nucleon transfer reactions. The mean excitation energy was measured by means of aγ-ray energy and multiplicity filter consisting of 6 NaI detectors. Large cross sections for one-neutron and two-neutron pick-up from232Th are observed. The impact-parameter dependence of the neutron transfer is analyzed in terms of semiclassical barrier penetration models. Using realistic neutron potentials with a diffuse surface, the experimental data are in accordance with the assumption of a “cold” transfer to states near the yrast line. |
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