Analysis of formation and decay of Ba,128*122 formed via Ni,6458+64Ni reactions near the Coulomb barrier
Abstract
The fusion mechanics of 58Ni+64Ni and 64Ni +64Ni reactions is analyzed by using the energy dependent Woods-Saxon potential (EDWSP) model and the subsequent decay dynamics of *122Ba and *128Ba isotopes formed in these fusion channels is examined via the dynamical cluster-decay model (DCM). In the EDWSP model, the energy dependent nature of the Woods-Saxon potential causes modifications in the profile of the fusion barrier between fusing nuclei. Such barrier modifications lead to the lowering of the effective fusion barrier of the colliding nuclei. Hence, EDWSP outcomes satisfactorily describe the energy dependence of fusion cross sections of the chosen reactions in near- and sub-barrier energy regions. Following this, the fragmentation of compound nuclei *122Ba and *128Ba formed using the above-mentioned reactions is investigated by using the collective clusterization approach of DCM. The calculations are done for quadrupole (β2) choice of fragmentation with hot configurations having optimized orientations. The evaporation residues' cross-section data lying within beam energy (Ebeam) = 171-220 MeV are nicely addressed. The comparative analysis of decaying *122Ba and *128Ba nuclei is worked out in terms of fragmentation potential and preformation probability, along with the investigation of barrier characteristics.
- Publication:
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Physical Review C
- Pub Date:
- September 2022
- DOI:
- 10.1103/PhysRevC.106.034615
- Bibcode:
- 2022PhRvC.106c4615K