Observation of fission residues in the ¹⁶O + ¹⁸¹Ta system at E_lab ≈ 6 MeV/A

¹ Department of Physics, Aligarh Muslim University, Aligarh (U.P.)-202 002, India
² INFN-Laboratori Nazionali de Lagnaro, I-35020 Legnaro, Italy
³ Physics Department, S. V. College, Aligarh (U.P.)-202 002, India
⁴ NP- Group, Inter University Accelerator Centre (IUAC), New Delhi - 110 067, India
⁵ UGC-DAE-CSR, Bidhan Nagar, Kolkata - 700 098, India

^a phy.vijayraj@gmail.com
^b bbpsinghamu@gmail.com

Abstract

Present paper reports on the production cross-section of 24 fission like events (30 ≤ Z ≤ 60) formed via complete fusion-fission and/or incomplete fusion-fission processes in ¹⁶O+¹⁸¹Ta system at energies ≈ 6 MeV/A. Experiments have been performed using the recoil-catcher technique followed by off-line γ-spectroscopy. The measured cross-section of fission-like events is satisfactorily described by a statistical model code. Further, an attempt has been made to study the mass and isotopic yield distributions of fission fragments. The variance of the presently measured isotopic yield distributions has been found to be in agreement with the literature values for some other fissioning systems.