Cross sections and barriers for nuclear fission induced by high-energy nucleons

Journal Article · Fri Mar 15 04:00:00 EDT 2013 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778813010055· OSTI ID:22156408

Yavshits, S. G. ^[1]

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1. Khlopin Radium Institute (Russian Federation)

The cross sections for the fission of {sup 232}Th, {sup 235,238}U, {sup 237}Np, and {sup 239}Pu target nuclei that was induced by 20- to 1000-MeV neutrons and protons were calculated. The respective calculations were based on the multiconfiguration-fission (MCFx) model, which was used to describe three basic stages of the interaction of high-energy nucleons with nuclei: direct processes (intranuclear cascade), equilibration of the emerging compound system, and the decay of the compound nucleus (statistical model). Fission barriers were calculated within the microscopic approach for isotopic chains formed by 15 to 20 nuclei of the required elements. The calculated fission cross sections were compared with available experimental data. It was shown that the input data set and the theoretical model used made it possible to predict satisfactorily cross section for nuclear fission induced by 20- to 1000-MeV nucleons.

• OSTI ID: 22156408
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 3 Vol. 76; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHAINS
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
CROSS SECTIONS
FISSION
FISSION BARRIER
INTERACTIONS
MEV RANGE
NEPTUNIUM 237 TARGET
NEUTRON REACTIONS
NEUTRONS
NUCLEAR DECAY
PLUTONIUM 239 TARGET
PROTON REACTIONS
PROTONS
STATISTICAL MODELS
THORIUM 232 TARGET
URANIUM 235 TARGET
URANIUM 238 TARGET