Significance of nuclear structure effects in decay of stable and excited nuclei, M. Bansal and R. K. Gupta, Physics Department, Panjab University, CHANDIGARH- 160014, India − Nuclear structure effects play important roles in decays of stable nuclei through the so-called “exotic-cluster” radioactive decays and in excited compound nucleus (CN) decays as the CN formed in heavy-ion reactions (HI) can decay by emitting multiple light particles (LPs: n, p, α and γ-rays), the  evaporation-residue ER, fusion fission (ff), consisting of the, so-called, intermediate mass fragments IMFs of masses 5≤A≤20 and charges 2 and qf constituting the fusion cross-section.

Models are advanced for both the exotic cluster-decays of radioactive nuclei, and CN decays with the pre-formation probability P0 included in both cases. These are the preformed cluster model (PCM) [3-4] and the dynamical cluster-decay model (DCM) [5-7] where the respective cross-sections are calculated. The PCM is shown to predict the observed clusters from all known cases of radioactive cluster decays, and the DCM is successful in giving not only the fusion cross-section, but also the cross-sections of constituting  processes, i.e., ER, IMF, ff and qf. The aim of this contribution to exemplify the significance of P0 in both cluster radioactivity and heavy-ion reactions. 

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