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Isomeric ratio and cross section of the /sup 237/Np(n, 2n) reaction

Journal Article · · Sov. At. Energy (Engl. Transl.); (United States)
OSTI ID:6891560
; ; ;
It has been shown that on the basis of the Hauser-Feshbach theory, and taking into account the law of the conservation of moment, the isomer ratio for the reaction /sup 237/Np (n, 2n) can be calculated. The indeterminateness of the modeling of the /sup 236/Np level scheme, to all appearances, has little effect on the energy dependence of the isomeric ratio. The error in the calculated cross section for the (n, 2n) reaction is determined chiefly by the error in the experimental data on the isomeric ratio and on the cross section for the formation of the short-lived state. Obtaining a correct estimate of the error is made difficult by the scarcity of experimental data on the isomeric ratio. The results of this work can be useful in practical activity when combined with an estimate of the cross sections and the creation of a complete system of neutron cross sections for /sup 237/Np. Theoretical estimates of the cross sections can to a significant extent compensate for the scarcity and indeterminateness of the experimental data.
OSTI ID:
6891560
Journal Information:
Sov. At. Energy (Engl. Transl.); (United States), Journal Name: Sov. At. Energy (Engl. Transl.); (United States) Vol. 63:2; ISSN SATEA
Country of Publication:
United States
Language:
English

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050800 -- Nuclear Fuels-- Spent Fuels Reprocessing
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ANGULAR MOMENTUM
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FISSION
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GROUND STATES
HADRON REACTIONS
HALF-LIFE
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NEUTRON REACTIONS
NUCLEAR FUELS
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NUCLEAR THEORY
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REPROCESSING
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SPENT FUELS
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YIELDS