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Energy dependence of fission-fragment neutron multiplicity in 235U(n, f)

Albertsson, M. LU (2019) In Acta Physica Polonica B, Proceedings Supplement 12(3). p.499-506
Abstract

A consistent framework for treating the energy dependence of fission-fragment neutron multiplicities is presented. The shape evolution of the compound nucleus towards scission is treated in the strong damping limit using the Metropolis walk method. The available excitation energy at scission is then divided statistically between the two fragments using microscopic level densities. Deformation energies, which contribute to the excitation energy when the fragments relax to their ground-state shapes, are also computed. From the total fragment excitation energies, the number of emitted neutrons is obtained and illustrated for neutron-induced fission of 235U.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Physica Polonica B, Proceedings Supplement
volume
12
issue
3
pages
8 pages
publisher
Jagiellonian University, Cracow, Poland
external identifiers
  • scopus:85072535900
ISSN
1899-2358
DOI
10.5506/APhysPolBSupp.12.499
language
English
LU publication?
yes
id
30d650b3-cf76-4008-9aff-0950694e34cd
date added to LUP
2022-04-01 09:34:34
date last changed
2022-11-16 21:44:55
@article{30d650b3-cf76-4008-9aff-0950694e34cd,
  abstract     = {{<p>A consistent framework for treating the energy dependence of fission-fragment neutron multiplicities is presented. The shape evolution of the compound nucleus towards scission is treated in the strong damping limit using the Metropolis walk method. The available excitation energy at scission is then divided statistically between the two fragments using microscopic level densities. Deformation energies, which contribute to the excitation energy when the fragments relax to their ground-state shapes, are also computed. From the total fragment excitation energies, the number of emitted neutrons is obtained and illustrated for neutron-induced fission of <sup>235</sup>U.</p>}},
  author       = {{Albertsson, M.}},
  issn         = {{1899-2358}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{499--506}},
  publisher    = {{Jagiellonian University, Cracow, Poland}},
  series       = {{Acta Physica Polonica B, Proceedings Supplement}},
  title        = {{Energy dependence of fission-fragment neutron multiplicity in <sup>235</sup>U(n, f)}},
  url          = {{http://dx.doi.org/10.5506/APhysPolBSupp.12.499}},
  doi          = {{10.5506/APhysPolBSupp.12.499}},
  volume       = {{12}},
  year         = {{2019}},
}