Speaker
Description
The pre-compound (PCN) emission has been one of the important mechanisms both in light and heavy ion reactions at relatively high energies above 10 MeV/A. Recent observations of PCN emission even at low incident energies below 10 MeV/A, where evaporation process dominates, have renewed interest to carry out further research in the aforesaid reaction mechanism[1-2]. Plenty of experimental data on PCN processes is available but no systematics has been developed with mass number of target nuclei and excitation energy. In order to develop a systematics for PCN process, the excitation functions of the reaction residues produced in the interaction of alpha beam with target nuclei 51V, 55Mn, 93Nb, 121Sb, and 123Sb, 159Tb, 169Tm, 181Ta and 197Au have been studies. However, to see some systematics in heavy ion reactions, the reaction residues produced in the interaction of 12C and 16O projectiles with target nuclei 159Tb, 169Tm and 181Ta have been investigated at varying energies from near the Coulomb barrier to below 8 MeV/nucleon.
The experiments for alpha induced reactions have been performed at the Variable Energy Cyclotron Centre (VECC), Kolkata and the Inter University Accelerator (IUAC), New Delhi has been used to investigate 12C and 16O beam reactions with heavy target nuclei. A systematics of the pre-compound process has been developed both for alpha and heavy projectiles at low energies. Further details will be presented.
REFERENCES
[1] Manoj Kumar Sharma et al., Phys. Rev. C 98, (2018) 054607, Phys. Rev. C 99, (2019) 014608.
[2] Manoj Kumar Sharma et al., Phys. Rev. C 91, (2015) 014603.
