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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:54 |
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Conference: Bucharest University Faculty of Physics 2011 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
Sensitivity of 238U(n,f)prompt fission neutron spectrum to model parameters
Authors:
Iuliana-Elenav Visan (1), Anabella Tudora (2)
Affiliation:
Institute for Nuclear Research, 115400 Pitesti-Mioveni, Campului Street, nr.1 Romania (1)
Faculty of Physics, University of Bucharest, 077125, Atomistilor Street 405, Magurele, Ilfov (2)
E-mail
iuliana.visan@yahoo.com
anabellatudora@hotmail.com
Keywords:
prompt fission neutron spectrum, prompt neutron emission data, scission neutrons
Abstract:
The sensitivity of the prompt fission neutron spectrum to different model parameters is studied for the case of 238U(n,f) at more incident neutron energies where experimental data exist. The prompt neutron spectrum is provided by an improved version of the “most probable fragmentation” approach. The influence on the spectrum shape of different model improvements such as a new form of the residual temperature distribution of fragments and the inclusion of the scission neutron contribution is studied. Also the spectrum sensitivity to different optical model parameterizations used to calculate the compound nucleus cross-section of the inverse process as well as to a 10% variation of average values of model parameters (energy release, total kinetic energy of fragments, average neutron separation energy from fission fragments) is investigated.
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