Heavy-ion versus3He/4He fusion-fission reactions: Angular momentum dependence of dissipation in nuclear fission

2011 ◽  
Vol 84 (3) ◽  
Author(s):  
W. Ye
Keyword(s):  
Angular Momentum ◽  
Nuclear Fission ◽  
Heavy Ion ◽  
Momentum Dependence ◽  
Fission Reactions

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.

scholarly journals Temperature dependence of nuclear fission time in heavy-ion fusion-fission reactions

2017 ◽  
Vol 96 (5) ◽  
Author(s):  
Chris Eccles ◽  
Sanil Roy ◽  
Thomas H. Gray ◽  
Alessio Zaccone
Keyword(s):  
Temperature Dependence ◽  
Nuclear Fission ◽  
Heavy Ion ◽  
Fission Reactions ◽  
Heavy Ion Fusion

scholarly journals Temperature and angular momentum dependence of the quadrupole deformation in sd-shell

Pramana ◽  
2009 ◽  
Vol 73 (5) ◽  
pp. 839-846
Author(s):  
P. A. Ganai ◽  
J. A. Sheikh ◽  
I. Maqbool ◽  
R. P. Singh
Keyword(s):  
Angular Momentum ◽  
Quadrupole Deformation ◽  
Momentum Dependence

MODELLING OF DISSIPATION IN NUCLEAR FISSION

2004 ◽  
Vol 13 (01) ◽  
pp. 97-101
Author(s):  
C. SCHMITT ◽  
B. JURADO ◽  
A. R. JUNGHANS ◽  
K.-H. SCHMIDT ◽  
J. BENLLIURE
Keyword(s):  
Experimental Approach ◽  
Nuclear Fission ◽  
Heavy Ion ◽  
Analytical Approximation ◽  
Time Dependent ◽  
Relativistic Energy ◽  
Transient Effects ◽  
Ion Collisions ◽  
Relaxation Effects ◽  
Nuclear Dissipation

Peripheral heavy-ion collisions at relativistic energy are proposed as a new experimental approach dedicated to nuclear dissipation studies and, in particular, to investigate transient effects which are responsible for the inhibition of fission at the beginning of the process. To extract reliable information from the data, an analytical approximation of the time-dependent fission decay width is used in connection with new experimental signatures of relaxation effects.

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