Complete and incomplete fusion reactions in the interaction of ¹⁶O+⁵⁵Mn system below 7 MeV/A: Measurement and analysis of Excitation Functions

¹ Department of Physics, Aligarh Muslim University, Aligarh, 202 002, INDIA
² Department of Physics, Bareilly College, Bareilly, 243 005, INDIA
³ Nuclear Physics Group, Inter University Accelerator Centre, New Delhi, 110 067, INDIA
⁴ Department of Physics, Addis Ababa University, Addis Ababa, ETHIOPIA

^a e-mail: sunilduttamu@gmail.com

Published online: 29 January 2015

Abstract

In this paper, we have made an attempt to measure the excitation functions for the evaporation residues identified in the interaction of ¹⁶O+⁵⁵Mn system with a view to study the complete and incomplete fusion reaction dynamics in heavy ion induced reactions. The motivation of this experiment is to study the breakup of ¹⁶O in reactions below 7 MeV/A and to compare the excitation functions for ¹²C, ¹⁶O and ²⁰Ne induced reactions with different targets leading to the same composite system (⁷¹As in this case). PACE-4 and ALICE-91 have been used for the analysis with the same set of input parameters as those adopted in the case of ¹²C+⁵⁹Co and ²⁰Ne+⁵¹V systems. The measured excitation functions for a particular decay channel in the three cases (i.e. ¹²C+⁵⁹Co, ¹⁶O+⁵⁵Mn and ²⁰Ne+⁵¹V) have been compared and found to obey Bohr′s assumption in case of complete fusion channels. The effects of Coulomb barrier and other entrance channel parameters are found to be quite significant in determining the decay mode of the composite system. Further the incomplete fusion dynamics is also observed to be of considerable importance in the present energy region.