Two-dimensional Langevin approach to nuclear fission dynamics

1992 ◽  
Vol 278 (4) ◽  
pp. 403-406 ◽  
Author(s):  
G.-R. Tillack
Keyword(s):  
Nuclear Fission ◽  
Two Dimensional ◽  
Langevin Approach

Two-dimensional Langevin approach to the human stabilogram

2004 ◽  
Vol 22 (6) ◽  
pp. 649-660 ◽  
Author(s):  
Maciej Bosek ◽  
Bronisław Grzegorzewski ◽  
Andrzej Kowalczyk
Keyword(s):  
Two Dimensional ◽  
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.

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

scholarly journals The description of the excitation energy sharing in nuclear fission within the Langevin approach

2021 ◽  
Vol 256 ◽  
pp. 00007
Author(s):  
F.A. Ivanyuk ◽  
S. Chiba
Keyword(s):  
Excitation Energy ◽  
Mass Number ◽  
Nuclear Fission ◽  
Deformation Energy ◽  
Langevin Equations ◽  
Excitation Energies ◽  
Tooth Structure ◽  
Fission Fragments ◽  
Langevin Approach ◽  
Energy Sharing

We apply the four-dimensional Langevin approach to the description of fission of 235U by neutrons and calculate the dependence of the excitation energy of fission fragments on their mass number. For this we run the Langevin equations until the compound nucleus splits into two separated fragments. This is possible since the we used in this work two-center shell model shape parametrization that describes well both compact and separated shapes. The excitation energies of each fragment are calculated assuming that the temperatures of both fragments are the same. The deformation energy of the fragment immediately after scission is added to its excitation energy. The saw-tooth structure of the dependence neutron multiplicity on the fragment’s mass number in reaction 235U + n at En = 5 Mev is qualitatively reproduced.

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

Spectrophotometric measurements of objective-prism spectra

1966 ◽  
Vol 24 ◽  
pp. 118-119
Author(s):  
Th. Schmidt-Kaler
Keyword(s):  
Progress Report ◽  
Two Dimensional ◽  
Objective Prism ◽  
Made In

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.

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