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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:38 |
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Conference: Bucharest University Faculty of Physics 2010 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Model for the calculus of the fission fragment total kinetic energy
Authors:
Vladimir Manea
Affiliation:
Faculty of Physics, University of Bucharest, P.O. Box MG-11, 0771253 Bucharest–Magurele, Romania
E-mail
vladimir.manea@yahoo.com
Keywords:
nuclear fission, fission fragments, total kinetic energy, fragment deformation, prescission configuration, point-by-point approach
Abstract:
The fission fragment (FF) total kinetic energy as a function of the total fragment mass, TKE(A), is an important quantity especially in the prompt neutron emission calculations. The IVth generation of nuclear fission reactors requires data for which few or no experimental measurements exist. In this context, the models for obtaining this data are crucial and any theoretical calculation of the TKE(A) function is welcome. The present work is devoted to the development of a theoretical model which describes the values of TKE(A) as a sum of four terms of Coulombian interaction, taking into account the fragment deformation and the existence of a neck between the two fragments in the prescission configuration. The total kinetic energy is calculated for multiple FF pairs, covering the entire FF range, the obtained results describing very well the experimental data for the thermal neutron induced fission of U-235, Pu-239 and Np-237. The model calculation results of TKE(A), used in the frame of the Point-by-Point prompt neutron emission model, lead to prompt neutron quantities in very good agreement with all existing experimental data.
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