Systematic study on probable projectile-target combinations for the synthesis of the 302120 superheavy nucleus
Abstract
Probable projectile-target combinations for the synthesis of superheavy element 302120 have been studied taking Coulomb and proximity potential as the interaction barrier. The probabilities of compound nucleus formation, PCN for the projectile-target combinations found in the cold reaction valley of 302120 are estimated. At energies near and above the Coulomb barrier, we have calculated the capture, fusion and evaporation residue cross sections for the reactions of all the probable projectile-target combinations so as to predict the most promising projectile-target combinations for the synthesis of SHE 302120 in heavy ion fusion reactions. The calculated fusion and evaporation cross section for the more asymmetric (hotter) projectile-target combination is found to be higher than the less asymmetric (colder) combination. It can be seen from the nature of quasi-fission barrier height, mass asymmetry, probability of compound nucleus formation, survival probability and excitation energy, the systems 44Ar + 258No, 46Ar + 256No, 48Ca + 254Fm, 50Ca + 252Fm, 54Ti + 248Cf, 58Cr + 244Cm in the deep region I of cold reaction valley, and the systems 62Fe + 240Pu, 64Fe + 238Pu, 68Ni + 234U, 70Ni + 232U, 72Ni + 230U, 74Zn + 228Th in the other cold valleys are identified as the better projectile-target combinations for the synthesis of 302120. Our prediction on the synthesis of 302120 superheavy nuclei using the combinations 54Cr+248Cm, 58Fe+244Pu, 64Ni+238U and 50Ti+249Cf are compared with available experimental data and other theoretical predictions.
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