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

Journal Article · Mon Feb 01 00:00:00 EST 1988 · Sov. At. Energy (Engl. Transl.); (United States)

OSTI ID:6891560

Ignatyuk, A V; Kornilov, N V; Maslov, V M; Pashchenko, A B

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), Vol. 63:2; Other Information: Translated from At. Energ.; 63: No. 2, 110-113(Aug 1987)
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ISOMERIC NUCLEI
ISOTOPE RATIO
NEPTUNIUM 236
NEPTUNIUM 237 TARGET
NEUTRON REACTIONS
CROSS SECTIONS
FISSION
BETA-MINUS DECAY
DATA COVARIANCES
ENERGY DEPENDENCE
EXCITED STATES
GROUND STATES
HALF-LIFE
HAUSER-FESHBACH THEORY
NEPTUNIUM 236 TARGET
NUCLEAR MODELS
NUCLEAR REACTION YIELD
REPROCESSING
SPENT FUELS
SPIN
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ANGULAR MOMENTUM
BARYON REACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
ENERGY SOURCES
FUELS
HADRON REACTIONS
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
ISOTOPES
MATERIALS
MATHEMATICAL MODELS
NEPTUNIUM ISOTOPES
NUCLEAR FUELS
NUCLEAR REACTIONS
NUCLEAR THEORY
NUCLEI
NUCLEON REACTIONS
ODD-ODD NUCLEI
PARTICLE PROPERTIES
RADIOISOTOPES
REACTOR MATERIALS
SEPARATION PROCESSES
TARGETS
YEARS LIVING RADIOISOTOPES
YIELDS
652020* - Nuclear Properties & Reactions
A=220 & above
Experimental
050800 - Nuclear Fuels- Spent Fuels Reprocessing