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https://ptsldigital.ukm.my/jspui/handle/123456789/499402| Title: | Cluster Model Of Alpha-Decay Preformation Factor For Even-Even Heavy Nuclei |
| Authors: | Saad M. Saleh Ahmed (P53213) |
| Supervisor: | Redzuwan Bin Yahaya, Assoc. Prof. Dr. |
| Keywords: | Cluster Model Alpha-Decay Preformation Factor Even-Even Heavy Nuclei Cluster theory (Nuclear physics) |
| Issue Date: | 18-Jul-2013 |
| Description: | Recent observations of cluster radioactivity and success of the cluster model together with the shell model in describing the clusterization effect has given greater insight on the nuclear structure properties of heavy nuclei. In this study the clusterization effect for heavy nuclei is presented in a new formulation using clusterization states and the cluster-formation probability (preformation factor). The total clusterization state of the total system was represented in terms of bases of different clusterization states. The cluster-formation model was proposed as a hypothesized model to obtain an energy-dependent formula in determining the cluster-formation probability. In order to avoid the complexity of Schrodinger equation for a many-body system, these energy values were determined from the binding energy differences. The formula was first applied for 212Po nucleus to test the validity of this model and later extended to a group of even-even heavy nuclei. This required a phenomenological study of nucleon-nucleon interaction after analyses of binding energy differences were obtained. Finally, the alpha-decay preformation factor was determined for the even-even nuclei around the magic number using this formula and the results were discussed within this model. The result of 212Po nucleus gave a preformation factor value in good agreement with that reported by others, while for 82<Z<114, 126<N<170 even-even heavy and even-even (around the magic numbers) nuclei showed a very good consistency with the experimental alpha-decay constants comparable with other models. The study has shown that the proposed cluster-formation approach is successful in describing the clusterization effect with a potential to be applied in heavy nuclei.,PhD |
| Pages: | 78 |
| Call Number: | QC793.3.S8 .A377 2013 |
| Publisher: | UKM, Bangi |
| Appears in Collections: | Faculty of Science and Technology / Fakulti Sains dan Teknologi |
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|---|---|---|---|---|
| ukmvital_71601+Source01+Source010.PDF Restricted Access | 2.07 MB | Adobe PDF |  View/Open |
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