ENERGY PARTITION IN 235U FISSION REACTION INDUCED BY THERMAL NEUTRON

2012 ◽  
Vol 21 (08) ◽  
pp. 1250073 ◽  
Author(s):  
YONG-JING CHEN ◽  
JING QIAN ◽  
TING-JIN LIU ◽  
ZHU-XIA LI ◽  
XI-ZHEN WU ◽  
...  
Keyword(s):  
Excitation Energy ◽  
Heavy Fragment ◽  
Incident Neutron ◽  
Shell Effect ◽  
Incident Neutron Energy ◽  
Energy Partition ◽  
Fission Reaction ◽  
Fission Fragments ◽  
Total Excitation Energy ◽  
235U Fission

The partition of the total excitation energy between the fission fragments for the n th +235 U and n(En = 5.55 MeV)+235 U fission reactions are analyzed with the experimental data available. Our results show that the total excitation energy is not shared by the fragments in proportion of their masses but support the so-called energy sorting-mechanism. The temperature of the heavy fragment is generally lower than that of the light one when the shell effect does not play a strong role. As soon as the mass of heavy fragment closes to 132, its temperature becomes higher than the complementary light one because of strong shell effect. Our results also show that the heavy fragments gain more energy than the complementary light ones when the incident neutron energy increases.

Possible reference method of total excitation energy partition between complementary fission fragments

2011 ◽  
Vol 867 (1) ◽  
pp. 12-40 ◽  
Author(s):  
C. Manailescu ◽  
A. Tudora ◽  
F.-J. Hambsch ◽  
C. Morariu ◽  
S. Oberstedt
Keyword(s):  
Excitation Energy ◽  
Reference Method ◽  
Energy Partition ◽  
Fission Fragments ◽  
Total Excitation Energy

scholarly journals Microscopic Calculation of Fission Fragment Distributions in Actinides

2020 ◽  
Vol 242 ◽  
pp. 03001
Author(s):  
N. Schunck
Keyword(s):  
Fission Fragment ◽  
Initial Conditions ◽  
Quantum Mechanical ◽  
Incident Neutron ◽  
Incident Neutron Energy ◽  
Fission Fragments ◽  
Microscopic Calculation ◽  
Precise Knowledge ◽  
Quantum Mechanical Description ◽  
Induced Fission

The simulation of independent and cumulative yields requires precise knowledge of the initial conditions of the fission fragments immediately after scission. In this paper, we use a quantum-mechanical description of fission dynamics to extract the initial mass distribution of fission fragments for the neutron-induced fission of the two major actinides 239 Pu and 235 U, both for thermal fission and as a function of the incident neutron energy.

scholarly journals Attempted study of the 237Np(n,2n)236Np reaction cross section at 9.5 MeV

2019 ◽  
Vol 18 ◽  
pp. 101
Author(s):  
M. Diakaki ◽  
R. Vlastou ◽  
M. Kokkoris ◽  
C. T. Papadopoulos ◽  
A. Tsinganis ◽  
...  
Keyword(s):  
Cross Section ◽  
Gamma Ray ◽  
Gamma Spectroscopy ◽  
Reaction Cross ◽  
Activation Technique ◽  
Incident Neutron ◽  
Incident Neutron Energy ◽  
Tandem Accelerator ◽  
Section Measurement ◽  
High Gamma

The cross section measurement of the 237Np(n,2n)236Np reaction has been attempted at an incident neutron energy of 9.5 MeV by means of the activation technique. The neutron beam was produced via the 2H(d,n)3Ηe reaction at the VdG Tandem accelerator of NCSR “Demokritos”. It is the second time that this measurement has been tried with a gamma spectroscopy method and the difficulties faced due to the high gamma ray background produced by the sample itself and the fission fragments produced by the irradiation, in combination with the very low intensity of the gamma ray of interest are being reported.

Measurement and covariance analysis of 100Mo (n, 2n) 99Mo and 96Mo (n, p) 96Nb reaction cross sections at the incident neutron energy of 14.54 MeV

2020 ◽  
Vol 325 (3) ◽  
pp. 831-840
Author(s):  
Sangeetha Prasanna Ram ◽  
Jayalekshmi Nair ◽  
Saraswatula Venkata Suryanarayana ◽  
Laxman Singh Danu ◽  
Saroj Bishnoi ◽  
...  
Keyword(s):  
Neutron Energy ◽  
Cross Sections ◽  
Reaction Cross ◽  
Covariance Analysis ◽  
Incident Neutron ◽  
Incident Neutron Energy ◽  
Reaction Cross Sections
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