scholarly journals Statistical model of heavy-ion fusion-fission reactions

2009 ◽  
Vol 79 (4) ◽  
Author(s):  
J. P. Lestone ◽  
S. G. McCalla
Keyword(s):  
Statistical Model ◽  
Heavy Ion ◽  
Fission Reactions ◽  
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.

DYNAMICAL SIMULATION OF EMISSION ANGLE DEPENDENCE OF FRAGMENTS SPIN IN HEAVY ION FUSION–FISSION REACTIONS

2010 ◽  
Vol 19 (07) ◽  
pp. 1451-1461 ◽  
Author(s):  
M. R. PAHLAVANI ◽  
D. NADERI ◽  
S. M. MIRFATHI
Keyword(s):  
Experimental Data ◽  
Heavy Ion ◽  
Emission Angle ◽  
Fission Reactions ◽  
Angle Dependence ◽  
Dynamical Simulation ◽  
Deformation Parameters ◽  
Average Spin ◽  
Neck Thickness ◽  
Heavy Ion Fusion

In this paper, a formalism consisting of multi-dimensional Langevin equation (LE) and Scission point Transition State Model (SCTSM) have been applied to study the angle dependence of fragment's average spin for 16 O + 209 Bi and 16 O + 232 Th systems. The influence of asymmetry and deformation parameters, neck thickness of compound nucleus and pre-scission neutron multiplicity on the fragment's average spin is discussed. Results obtained using this approach are in better agreement with the experimental data as compared with the SCTSM.

scholarly journals Statistical model calculations of pre-scission neutron multiplicity for the heavy ion induced fusion-fission reactions with actinide target232Th

2015 ◽  
Vol 86 ◽  
pp. 00060
Author(s):  
Meenu Thakur ◽  
B.R. Behera ◽  
Maninder Kaur ◽  
Santanu Pal ◽  
P. Sugathan ◽  
...  
Keyword(s):  
Statistical Model ◽  
Heavy Ion ◽  
Neutron Multiplicity ◽  
Fission Reactions ◽  
Model Calculations

Dynamical Dipole Mode in Heavy-Ion Fusion-Evaporation and Fission Reactions in the [sup 192]Pb Mass Region

2011 ◽  
Author(s):  
R. Silvestri ◽  
D. Pierroutsakou ◽  
C. Parascandolo ◽  
C. Agodi ◽  
R. Alba ◽  
...  
Keyword(s):  
Heavy Ion ◽  
Mass Region ◽  
Fission Reactions ◽  
Dipole Mode ◽  
Heavy Ion Fusion
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