Neutron- and Proton-Induced Nuclear Data Evaluation of Minor Actinides for Energies up to 250 MeV

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

DOI:https://doi.org/10.1063/1.1945018· OSTI ID:20722564

Lee, Young-Ouk; Chang, J ^[1]; Fukahori, Tokio; Konobeyev, A Yu ^[2]

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1. Korea Atomic Energy Research Institute (Korea, Republic of)
2. Japan Atomic Energy Research Institute (Japan)

Neutron-induced nuclear data for thorium-232, U-233,234,236, and Cm-243,244,245,246 isotopes have been evaluated at energies from 20 MeV to 250 MeV, and combined with the JENDL-3.3 data at 20 MeV, while proton-induced data were evaluated for energies from 1 to 250 MeV. Nuclear-model parameters are largely based on the IAEA-RIPL recommendation and adjusted to better reproduce the available measurements. The coupled-channel optical model was applied to calculate the total, reaction, elastic, and direct inelastic cross sections, and to obtain the transmission coefficients. Decay of excited nuclei was described with the Hauser-Feshbach and exciton models using the GNASH code to simultaneously handle neutron, proton, deuteron, triton, helium-3, {alpha}, and {gamma} emissions and fissions. Special attention was paid to the fission cross sections for energies where experimental data are scant, using appropriate systematics and fittings. Particles and {gamma}-emission spectra after fission were calculated based on the statistical approach of Fong, and adjusted to the experimental data using the ALICE-ASH code.

• OSTI ID: 20722564
• 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: 10.1063/1.1945018; (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
COUPLED CHANNEL THEORY
CURIUM
DEUTERONS
EMISSION SPECTRA
EVALUATION
EXCITON MODEL
FISSION
GAMMA RADIATION
HAUSER-FESHBACH THEORY
HELIUM 3
MEV RANGE
NEUTRON REACTIONS
NUCLEAR DECAY
OPTICAL MODELS
PROTON REACTIONS
PROTON-NUCLEON INTERACTIONS
THORIUM
THORIUM 232
TRITONS
URANIUM