scholarly journals Four-dimensional Langevin approach to low-energy nuclear fission of U236

2017 ◽  
Vol 96 (6) ◽  
Author(s):  
Chikako Ishizuka ◽  
Mark D. Usang ◽  
Fedir A. Ivanyuk ◽  
Joachim A. Maruhn ◽  
Katsuhisa Nishio ◽  
...  
Keyword(s):  
Nuclear Fission ◽  
Low Energy ◽  
Langevin Approach

scholarly journals The 4-dimensional Langevin approach to low energy nuclear fission

2018 ◽  
Vol 169 ◽  
pp. 00005
Author(s):  
F.A. Ivanyuk ◽  
C. Ishizuka ◽  
M.D. Usang ◽  
S. Chiba
Keyword(s):  
Excitation Energy ◽  
Mass Number ◽  
Nuclear Fission ◽  
Deformation Energy ◽  
Low Energy ◽  
Tooth Structure ◽  
Fission Fragments ◽  
Langevin Approach ◽  
Intrinsic Excitation ◽  
Mother Nucleus

We applied the four-dimensional Langevin approach to the description of fission of 235U by neutrons and calculated the dependence of the excitation energy of fission fragments on their mass number. For this we have fitted the compact just-before-scission configuration obtained by the Langevin calculations by the two separated fragments and calculated the intrinsic excitation and the deformation energy of each fragment accurately taking into account the shell and pairing effects and their dependence on the temperature and mass of the fragments. For the sharing of energy between the fission fragments we have used the simplest and most reliable assumption - the temperature of each fragment immediately after the neck rupture is the same as the temperature of mother nucleus just before scission. The calculated excitation energy of fission fragments clearly demonstrates the saw-tooth structure in the dependence on fragment mass number.

Dynamical Approach to Low-Energy Nuclear Fission in Terms of Langevin Equation

2017 ◽  
Author(s):  
Satoshi Chiba ◽  
Mark Dennis Anak Usang ◽  
Chikako Ishizuka ◽  
Hiroki Jojima ◽  
Fedir Ivanyuk
Keyword(s):  
Langevin Equation ◽  
Nuclear Fission ◽  
Low Energy ◽  
Dynamical Approach

Analysis of nuclear fission properties with the Langevin approach in Fourier shape parametrization

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Li-Le Liu ◽  
Yong-Jing Chen ◽  
Xi-Zhen Wu ◽  
Zhu-Xia Li ◽  
Zhi-Gang Ge ◽  
...  
Keyword(s):  
Nuclear Fission ◽  
Langevin Approach

FISSION OF EXCITED HEAVY NUCLEI

1958 ◽  
Vol 36 (12) ◽  
pp. 1707-1719 ◽  
Author(s):  
B. D. Pate
Keyword(s):  
Fission Products ◽  
Nuclear Fission ◽  
Low Energy ◽  
Heavy Nuclei ◽  
Fission Process ◽  
Distribution Mode ◽  
Charge Displacement ◽  
Comparison Of The Results ◽  
Average Neutron ◽  
Mev Protons

The results of published calculations on the prompt nuclear cascade and nuclear evaporation processes are combined with some assumptions regarding the nuclear fission process and fission widths to calculate the average neutron-to-proton ratios of fission products from Th + 8-Mev protons, Th + 87-Mev protons, and U + 450-Mev protons. Comparison of the results with experimental data indicates that the fission charge distribution mode characterized by the equal charge displacement hypothesis, hitherto considered a low energy phenomenon, persists in uranium and thorium up to the highest energy studied. There is also some evidence that fission occurs in excited heavy nuclei before complete de-excitation by particle emission, in agreement with other experimental work.

Sequential character of low-energy ternary and quaternary nuclear fission

2016 ◽  
Vol 79 (5) ◽  
pp. 793-797 ◽  
Author(s):  
S. G. Kadmensky ◽  
A. O. Bulychev
Keyword(s):  
Nuclear Fission ◽  
Low Energy

Low Energy Nuclear Fission

1981 ◽  
pp. 309-353
Author(s):  
H. Nifenecker
Keyword(s):  
Nuclear Fission ◽  
Low Energy
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