Integral Measurement Results in Standard Fields

Conference · Mon Mar 28 04:00:00 EST 1977 · National Bureau of Standards

OSTI ID:5166686

Gilliam, D. M. ^[1]

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1. National Bureau of Standards, Washington, DC (United States)

Measured spectrum-averaged fission cross sections are reported for several benchmark fast-neutron fields. For the ²⁵²Cf spectrum, absolute cross section measurements at NBS and the University of Michigan are compared. Cross section ratios (relative to ²³⁹Pu) are reported for ²³⁵U, ²³⁸U, and ²³⁷Np for the following fields: ²³⁵U fission spectrum, BIG-10, CFRMF, SIGMA SIGMA, and the Intermediate-Energy Standard Neutron Field (ISNF) at NBS. Fission product yields measured by the Interlaboratory LMFBR Reaction Rate Program (ILRR) are reported in two categories: Consensus Yields from thorough interlaboratory studies and Subsidiary Yields for isotopes studied less intensively (usually by a single laboratory). All measured yields were determined by Ge (Li) counting of fission activation foils, with specific fission rates determined by counting fissions from a separate light deposit in an ionization chamber. The fission product yields for the CFRMF and BIG-10 fields are reported first separately and then combined, to provide a single set of yields for a Fast Reactor Spectrum.

• Research Organization: National Bureau of Standards, Washington, DC (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
• OSTI ID: 5166686
• Conference Information: Journal Name: National Bureau of Standards Journal Volume: 493
• Country of Publication: United States
• Language: English

Related Subjects

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
Absolute Cross Section Measurements
BARYON REACTIONS
BARYONS
Benchmark Fast-Neutron Fields
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CROSS SECTIONS
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FAST FISSION
FERMIONS
FISSION
FISSION NEUTRONS
FISSION PRODUCTS
FISSION YIELD
Fission Cross Sections
Fission Rates Determination
Ge(Li) Counting
HADRON REACTIONS
HADRONS
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
Interlaboratory LMFBR Reaction Rate Program (ILRR)
Intermediate-Energy Standard Neutron Field (ISNF)
MINUTES LIVING RADIOISOTOPES
NEPTUNIUM 237 TARGET
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTION YIELD
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
Nuclear Criticality Safety Program (NCSP)
PLUTONIUM 239 TARGET
RADIOACTIVE MATERIALS
RADIOISOTOPES
TARGETS
URANIUM 235
URANIUM 235 TARGET
URANIUM 238 TARGET
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
YIELDS