SSTR Dosimetry in Critical Mass Measurements

Conference · Sun Jun 03 04:00:00 EDT 1979 · Transactions of the American Nuclear Society

OSTI ID:5902793

Lippincott, E. P. ^[1]; Ruddy, F. H. ^[1]; Long, C. L. ^[1]; Roberts, J. H. ^[1]

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1. Westinghouse Electric Corp., Richland, WA (United States)

As part of the Advanced Fuel Recycle Program, critical mass measurements have been made of several lattices consisting of mixed oxide (PuO2-UO2) fuel pin in water. In addition to providing a reliable technological basis for nuclear criticality control, these measurements are designed to provide benchmark data for validation of cross sections and calculational techniques used for mixed plutonium and uranium systems. In order to characterize some of the lattices more thoroughly, spatial fission rate distributions were measured using solid state track recorders (SSTR). These fission rate traverses cannot only be compared with calculated shapes, but since SSTR observations provide absolute fission rates, the data were also used as input to the multiple-foil unfolding code, SAND-II, to derive adjusted neutron spectra. The extremely high sensitivity of the SSTR method affords in-situ dosimetry for critical mass measurements with negligible spatial and spectral perturbations.

• Research Organization: Westinghouse Electric Corp., Richland, WA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
• OSTI ID: 5902793
• Report Number(s): CONF-790602-(Summ.)
• Conference Information: Journal Name: Transactions of the American Nuclear Society Journal Volume: 32
• Country of Publication: United States
• Language: English

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ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CHALCOGENIDES
CRITICAL MASS
CRITICALITY
CROSS SECTIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FISSION
FUEL ELEMENTS
FUEL PINS
HEAVY NUCLEI
HYDROGEN COMPOUNDS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NEPTUNIUM 237
NEPTUNIUM ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL SOLUTION
Nuclear Criticality Safety Program (NCSP)
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
PLUTONIUM COMPOUNDS
PLUTONIUM DIOXIDE
PLUTONIUM OXIDES
RADIOISOTOPES
REACTOR COMPONENTS
THORIUM 232
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TRANSURANIUM COMPOUNDS
URANIUM 235
URANIUM 238
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM ISOTOPES
URANIUM OXIDES
WATER
YEARS LIVING RADIOISOTOPES