SEARCH OF POSSIBLE DOUBLE MAGIC NUCLEI IN THE SUPERHEAVY VALLEY USING RELATIVISTIC MEAN FIELD DENSITY DEPENDING COUPLING MODELS

摘要

The magic nature and the stability of the various possible stable combinations of the nucleons (proton and neutron) are scrutinized with the help of density-dependent relativistic mean field (DDRMF) model. To analyze the parameter dependence of our calculation, three different parameters, namely, DD-ME1, DD-ME2 and PKDD are used to calculate relevant properties of finite nuclei. In the present context, S_(2n) and δ_(2n) are taken as the befitting quantities for the magic nature, and the existence of these predicted magic nuclei are justified from Е_B/A and λ. Finally, the stability is studied by calculation of α-decay and β-decay half lifetime. Our calculation shows that certain combinations of nucleons, i.e., Z = 114, 120 and 126 with N = 172, 184 and 198, respectively, are the best pairs in their immediate neighbors to synthesize experimentally.