Impact of shell corrections on fragment mass distribution of medium and heavy mass compound nuclei

The investigations of the fragmentation mass distributions have been made in order to emphasize the importance of the shell corrections (δU) in the decay of compound nuclei. The decay of medium and heavy mass compound nuclei 124Ce* and 246Bk* formed in 32S + 92Mo and 11B + 235U reactions, respectively, had been studied within the formalism of Dynamical Cluster Decay model. In the present study, the importance of δU is explored due to the availability of the separate contributions of liquid drop part (VLDM) and δU in the binding energies defined by Strutinsky renormalization procedure. The results shows that in medium mass compound nucleus 124Ce* the effect of δU above vanishing temperature (T=1.5 MeV) are very minute and the change becomes noticeable in the decay of heavy mass 246Bk* at temperature below the vanishing limit. The investigations show that the fragmentation potential and preformation probability contains the nuclear structure information of the nuclear system and its decaying fragments, which depend significantly on the δU values particularly at the temperature values below the vanishing limit.