Threshold behavior of interaction potential for the system 7Li + 64Ni: Comparison with 6Li + 64Ni
| Autor: | Ushasi Datta, K. Ramachandran, Subinit Roy, Mili Das, A. K. Shrivastava, Md. Moin Shaikh, P. K. Basu, Mandira Sinha, M.K. Pradhan |
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| Rok vydání: | 2016 |
| Předmět: |
Elastic scattering
Physics Energy dependent Nuclear and High Energy Physics Range (particle radiation) 010308 nuclear & particles physics Drop (liquid) Absorption cross section Coulomb barrier 01 natural sciences Interaction potential 0103 physical sciences Atomic physics 010306 general physics Energy (signal processing) |
| Zdroj: | Nuclear Physics A. 953:80-94 |
| ISSN: | 0375-9474 |
| Popis: | The elastic scattering angular distributions for the system 7Li + 64Ni were measured in the bombarding energy range of 12 MeV ≤ E l a b ≤ 26.4 MeV . A phenomenological optical model analysis was performed for the measured data. The strengths of the fitted potential components at the surface were estimated to extract their variation with energy. Further analyses of the measured angular distributions were performed with a hybrid potential composed of a renormalized folded real and a phenomenological imaginary potential. Both the model potentials predict similar energy dependent behavior for the effective interaction potential around the barrier. Unlike the heavy targets, 7Li + 64Ni does not show a normal threshold behavior. It also does not clearly exhibit a behavior similar to 6Li + 64Ni. The real potential for 7Li + 64Ni does not exhibit any significant energy dependence and the imaginary potential strength remains almost independent of energy above the Coulomb barrier ( ∼ 14 MeV ). However, at energies below the barrier, a sudden drop in the imaginary potential strength is observed. |
| Databáze: | OpenAIRE |
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