Absolute measurements of the fast neutron capture cross section of sup 238 U

Journal Article · Sat Feb 29 23:00:00 EST 1992 · Nuclear Science and Engineering; (United States)

DOI:https://doi.org/10.13182/NSE90-99· OSTI ID:5506041

Quang, E; Knoll, G F ^[1]

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1. Univ. of Michigan, Dept. of Nuclear Engineering, Ann Arbor, MI (US)

In this paper the cross section of the reaction {sup 238}U(n, {gamma}){sup 239}U is measured at neutron energies of 23 and 964 KeV. Photoneutron sources Sb-Be and Na-Be are calibrated using a manganese bath traceable to the National Bureau of Standards neutron source NBS-I and are provided nearly monoenergetic neutron irradiation. Neptunium-239 from the decay of {sup 239}U is chemically separated from the uranium target and is counted to determine the reaction rate. An {sup 243}Am foil is used as an absolute gamma-ray calibration standard in the determination of the induced activity. The resulting cross-section values are 491 {plus minus} 11 and 138 {plus minus} 5 mb at 23 and 967 keV, respectively.

• OSTI ID: 5506041
• Journal Information: Nuclear Science and Engineering; (United States), Journal Name: Nuclear Science and Engineering; (United States) Vol. 110:3; ISSN 0029-5639; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

663430* -- Nucleon-Induced Reactions & Scattering-- (1992-)
663590 -- Nuclear Mass Ranges-- A=220 & Above-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
AMERICIUM 243
AMERICIUM ISOTOPES
BARYON REACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALIBRATION
CROSS SECTIONS
DAYS LIVING RADIOISOTOPES
DECAY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FAST NEUTRONS
FERMIONS
FOILS
GAMMA RADIATION
HADRON REACTIONS
HADRONS
HEAVY NUCLEI
IONIZING RADIATIONS
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NATIONAL ORGANIZATIONS
NEPTUNIUM 239
NEPTUNIUM ISOTOPES
NEUTRON REACTIONS
NEUTRON SOURCES
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
ODD-EVEN NUCLEI
PARTICLE SOURCES
RADIATION SOURCES
RADIATIONS
RADIOISOTOPES
SPONTANEOUS FISSION RADIOISOTOPES
TARGETS
URANIUM 238
URANIUM 239
URANIUM ISOTOPES
US DOC
US NBS
US ORGANIZATIONS
YEARS LIVING RADIOISOTOPES