Theoretical Study of Decay Processes Observed in Reactions Involving Loosely Bound Projectiles

Abstract

The current wave of interest is the reactions where the loosely bound nuclei are involved. These type of reactions involving loosely bound nuclei particularly halo nuclei attracted great interest both from experimentalists and theorists. The reactions with loosely bound nuclei help to find the reaction dynamics and structure of halo nuclei. A reaction does not involve only one process but may evolve variety of decay processes depending on nature of projectile involved and incident energy used in the reactions. For example along with the complete fusion, the contribution of incomplete fusion, direct reaction is also observed in these reactions and an effort is made to address them with the help of dynamical cluster decay model[DCM]. DCM provides information regarding cross sections of all compound nucleus (CN) based decay processes on equal footing and the effect of angular momentum, excitation energy, temperature, deformations and orientations can be duly incorporated wherever applicable. The study of nuclear reactions induced by heavy ions with loosely bound characteristic is also a topic of great interest. The evaporation residue channels are investigated for the low energy heavy ion reactions (6He+45Sc). In 6He+45Sc reaction, the possibility of emission of three fragments (5He, 4He+1n, ER+5He) is analyzed and the behavior of all three fragmentation processes is compared. The behavior of both these is investigated above the Coulomb barrier at highest centre of mass energy. For the reaction (6He+45Sc), the process of complete fusion is taken into account while for the reaction 2H+45Sc three processes- complete fusion, incomplete fusion (1n+45Sc) and direct reaction (P0=1) is undertaken and their comparative analysis is carried out which imparts useful information regarding the dynamics of loosely bound reactions.