Role of Anharmonic Vibration on Heavy-ion Fusion Reaction and Large Angle Quasi-elastic Scattering of [sup 16]O+[sup 144]Sm

2009 ◽  
Author(s):  
Zamrun F. Muhammad ◽  
K. Hagino ◽  
Swee-Ping Chia
Keyword(s):  
Elastic Scattering ◽  
Fusion Reaction ◽  
Large Angle ◽  
Heavy Ion ◽  
Quasi Elastic Scattering ◽  
Anharmonic Vibration ◽  
Heavy Ion Fusion

Role of triple phonon excitations in large angle quasi-elastic scattering of very heavy mass systems

2016 ◽  
Vol 25 (08) ◽  
pp. 1650054
Author(s):  
Muhammad Firihu Zamrun
Keyword(s):  
Experimental Data ◽  
Elastic Scattering ◽  
Cross Section ◽  
Large Angle ◽  
Elastic Cross Section ◽  
Triple Quadrupole ◽  
Quasi Elastic Scattering ◽  
Coupled Channels ◽  
Barrier Distribution

We study the effect of multi-phonon excitations on large-angle quasi-elastic scattering of massive systems using the full order coupled-channels formalism. We especially investigate the role of triple phonon excitations of the target and projectile nuclei on the quasi-elastic scattering cross-section as well as the barrier distribution for [Formula: see text]Cr, [Formula: see text]Fe, [Formula: see text]Ni and [Formula: see text]Zn + [Formula: see text]Pb systems. It is shown that the calculations taken into account, the triple octupole phonon excitations of the target and triple quadrupole phonon excitations of the projectile for these systems can explain the experimental data of the quasi-elastic cross-section and the quasi-elastic barrier distribution. These results indicate that the coupled-channels formalism is still valid even for the very heavy mass systems.

Semiclassical coupled channels calculations in heavy-ion fusion reaction

2017 ◽  
Vol 11 ◽  
pp. 415-427 ◽  
Author(s):  
Fouad A. Majeed ◽  
Radhi Sh. Hamodi ◽  
Fatima M. Hussian
Keyword(s):  
Fusion Reaction ◽  
Heavy Ion ◽  
Coupled Channels ◽  
Heavy Ion Fusion

scholarly journals Isospin Conservation in Neutron Rich Systems of Heavy Nuclei

2018 ◽  
Vol 178 ◽  
pp. 05007 ◽  
Author(s):  
Ashok Kumar Jain ◽  
Swati Garg
Keyword(s):  
Theoretical Calculation ◽  
Fission Fragment ◽  
Nuclear Fission ◽  
Heavy Ion ◽  
Mass Region ◽  
Fission Reactions ◽  
Heavy Nuclei ◽  
Practical Applications ◽  
Heavy Ion Fusion

It is generally believed that isospin would diminish in its importance as we go towards heavy mass region due to isospin mixing caused by the growing Coulomb forces. However, it was realized quite early that isospin could become an important and useful quantum number for all nuclei including heavy nuclei due to neutron richness of the systems [1]. Lane and Soper [2] also showed in a theoretical calculation that isospin indeed remains quite good in heavy mass neutron rich systems. In this paper, we present isospin based calculations [3, 4] for the fission fragment distributions obtained from heavy-ion fusion fission reactions. We discuss in detail the procedure adopted to assign the isospin values and the role of neutron multiplicity data in obtaining the total fission fragment distributions. We show that the observed fragment distributions can be reproduced rather reasonably well by the calculations based on the idea of conservation of isospin. This is a direct experimental evidence of the validity of isospin in heavy nuclei, which arises largely due to the neutron-rich nature of heavy nuclei and their fragments. This result may eventually become useful for the theories of nuclear fission and also in other practical applications.

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