Abstract
The fusion and subsequent decay analysis of Z=116 superheavy nucleus formed via 48Ca+248Cm→296Lv*, 50Ti+244Pu→294Lv*,and 58Fe+232Th→290Lv* reactions is carried out using extended ℓ-summed Wong model and dynamical cluster decay model (DCM), respectively. First of all, the experimentally available fusion-fission (A/2±20) data is adequately addressed for 296Lv* and 294Lv* superheavy nuclei using extended ℓ-summed Wong model and the predictions are made for fusion-fission excitation function of 290Lv* nucleus. It is observed that with decrease in mass-asymmetry (η), the contribution of fusion-fission component decreases. This drop is steeper for 50Ti to 58Fe as compared to that for 48Ca to 50Ti. The calculated values of compound nucleus formation probability (PCN) are highest for 48Ca followed by 50Ti and 58Fe. Finally, the mass distribution of decay fragments is studied for 296Lv*, 294Lv*, and 290Lv* nuclei using DCM at near barrier energies. A valley in ACN/2 region results in asymmetric mass distribution for 296Lv* which becomes relatively symmetric for the lighter isotope 290Lv*.
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