Actinide Symmetric/Asymmetric Nucleon-Induced Fission up to 200 MeV

Journal Article · Tue May 24 00:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1945200· OSTI ID:20722371

Maslov, V M ^[1]

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1. Joint Institute of Nuclear and Energy Research - 'Sosny', 220109, Minsk (Belarus)

The fission cross sections of the symmetric SL-mode and the asymmetric lumped (S1+S2)-mode of the 238U(n,F), 235U(n,F), 232Th(n,F), and 238U(p,F) reactions are calculated up to En=200 MeV within a statistical model. To reproduce the measured branching ratio of symmetric and asymmetric fission events in the 238U(n,F) reaction, a preferential contribution of fission from neutron-deficient nuclei is assumed. This assumption is of critical importance to reproduce the observed 232Th(n,F) cross section. The branching ratio of symmetric and asymmetric fission events is shown to increase, with the increase of the incident neutron energy, faster for the higher fissility of the target nuclide.

• OSTI ID: 20722371
• Journal Information: AIP Conference Proceedings, Vol. 769, Issue 1; Conference: International conference on nuclear data for science and technology, Santa Fe, NM (United States), 26 Sep - 1 Oct 2004; Other Information: DOI: 10.1063/1.1945200; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMMETRY
BRANCHING RATIO
CROSS SECTIONS
FISSION
MEV RANGE
NEUTRON REACTIONS
NEUTRON-DEFICIENT ISOTOPES
STATISTICAL MODELS
THORIUM 232 TARGET
URANIUM 235 TARGET
URANIUM 238 TARGET