Indian Journal of Pure and Applied Physics

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Projectile Break-up Effect on Fusion in 16O + 156Gd Reaction at Energy Range 4.3-6.3 MeV/A


Affiliations
1 Department of Physics, G F (P G) College, Shahjahanpur 242 001, India
2 Centre for Applied Physics, Central University of Jharkhand, Ranchi 835 205, India
3 Department of Physics, Aligarh Muslim University, Aligarh 202 002, India
4 Inter University Accelerator Centre, New Delhi 202 002, India

We discuss our present understanding of the incomplete fusion (ICF) reaction dynamics, the excitation function of six evaporation residues (ERs) have been measured in 16O + 156Gd reaction at projectile energy range, E/A ~ 4.3-6.3 MeV/Nucleon. Some of the ERs are produced directly & indirectly (i.e. through pre-cursor), the pre-cursor contributions have been separated out from the measured cumulative cross-section with the help of Cavinato et al.1. After correcting the pre-cursor contribution, the independent yield has been compared with the statistical model code PACE-22, which describes the fusion reaction cross section. In order to optimize the parameter of the code PACE-2 that reproduces the cross section of all the complete fusion (CF) channels like xn and /or pxn-channels. Using the same set of input parameters, cross section of the ERs populated via incomplete fusion (ICF) channels have been measured. The enhancement in the measured cross section of the ERs populated via ICF channels over the PACE-2 prediction have been measured, which indicates the occurrence of the break-up of projectile 16O into (12C+α) and/or (8Be+2α) leading to ICF reaction dynamics.
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  • Projectile Break-up Effect on Fusion in 16O + 156Gd Reaction at Energy Range 4.3-6.3 MeV/A

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Authors

Rahbar Ali
Department of Physics, G F (P G) College, Shahjahanpur 242 001, India
D. Singh
Centre for Applied Physics, Central University of Jharkhand, Ranchi 835 205, India
Harish Kumar
Department of Physics, Aligarh Muslim University, Aligarh 202 002, India
Suhail A. Tali
Department of Physics, Aligarh Muslim University, Aligarh 202 002, India
Asif Khan
Department of Physics, G F (P G) College, Shahjahanpur 242 001, India
M. Afzal Ansari
Department of Physics, Aligarh Muslim University, Aligarh 202 002, India
R. P. Singh
Inter University Accelerator Centre, New Delhi 202 002, India
S. Muralithar
Inter University Accelerator Centre, New Delhi 202 002, India

Abstract


We discuss our present understanding of the incomplete fusion (ICF) reaction dynamics, the excitation function of six evaporation residues (ERs) have been measured in 16O + 156Gd reaction at projectile energy range, E/A ~ 4.3-6.3 MeV/Nucleon. Some of the ERs are produced directly & indirectly (i.e. through pre-cursor), the pre-cursor contributions have been separated out from the measured cumulative cross-section with the help of Cavinato et al.1. After correcting the pre-cursor contribution, the independent yield has been compared with the statistical model code PACE-22, which describes the fusion reaction cross section. In order to optimize the parameter of the code PACE-2 that reproduces the cross section of all the complete fusion (CF) channels like xn and /or pxn-channels. Using the same set of input parameters, cross section of the ERs populated via incomplete fusion (ICF) channels have been measured. The enhancement in the measured cross section of the ERs populated via ICF channels over the PACE-2 prediction have been measured, which indicates the occurrence of the break-up of projectile 16O into (12C+α) and/or (8Be+2α) leading to ICF reaction dynamics.