Iron and cadmium capture gamma-ray photofission measurements

Journal Article · Mon Jan 01 00:00:00 EST 1990 · Nuclear Science and Engineering; (USA)

OSTI ID:6640664

Williamson, T G ^[1]; Lamaze, G P; Gilliam, D M; Eisenhauer, C M ^[2]

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1. Virginia Univ., Charlottesville, VA (USA). Dept. of Nuclear Engineering
2. National Inst. of Standards and Technology, Gaithersburg, MD (USA)

Photofission measurements have been made in {sup 238}U, {sup 232}Th, and {sup 237}Np in iron and cadmium capture gamma-ray spectra in cylindrical neutron-driven gamma-ray sources in the thermal column of the National Bureau of Standards (NBS) Reactor. The gamma-ray source strength was measured with neutron activation foils and by direct counting of activations produced in the metal cylinders. Photofission measurements were made with NBS miniature fission chambers. The integral photofission cross sections were compared with differential measurements by integrating the capture gamma-ray spectra with measured cross-section shapes. The integral cross sections measured in the capture gamma-ray fields are lower than the cross sections calculated from measured differential data.

• OSTI ID: 6640664
• Journal Information: Nuclear Science and Engineering; (USA), Vol. 104:1; ISSN 0029-5639
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NBSR REACTOR
GAMMA SPECTRA
NEPTUNIUM 237
PHOTOFISSION
THORIUM 232
URANIUM 238
ACTIVATION ENERGY
CADMIUM
CALCULATION METHODS
CROSS SECTIONS
FISSION CHAMBERS
FOILS
GAMMA RADIATION
GAMMA SOURCES
IRON
NEUTRON REACTIONS
US NBS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYON REACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY
EVEN-EVEN NUCLEI
FISSION
HADRON REACTIONS
HEAVY NUCLEI
HEAVY WATER COOLED REACTORS
HEAVY WATER MODERATED REACTORS
IONIZATION CHAMBERS
IONIZING RADIATIONS
IRRADIATION REACTORS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS TESTING REACTORS
MEASURING INSTRUMENTS
METALS
NANOSEC LIVING RADIOISOTOPES
NATIONAL ORGANIZATIONS
NEPTUNIUM ISOTOPES
NEUTRON DETECTORS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
PHOTONUCLEAR REACTIONS
RADIATION DETECTORS
RADIATION SOURCES
RADIATIONS
RADIOISOTOPES
REACTORS
RESEARCH AND TEST REACTORS
RESEARCH REACTORS
SPECTRA
TANK TYPE REACTORS
THERMAL REACTORS
THORIUM ISOTOPES
TRANSITION ELEMENTS
URANIUM ISOTOPES
US DOC
US ORGANIZATIONS
YEARS LIVING RADIOISOTOPES
652020* - Nuclear Properties & Reactions
A=220 & above
Experimental
400101 - Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
400500 - Photochemistry