Design and testing of a super(10)B sub(4)C capsule for spectral-tailoring in mixed-spectrum reactors

A boron carbide capsule highly enriched in super(10)B has been designed and used for spectral-tailoring experiments at the TRIGA reactor at Washington State University. New experiments show that enriching the boron to 96% B-10 results in additional absorption of neutrons in the resonance region ther...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2014-04, Vol.743, p.121-123
Main Authors: Greenwood, L R, Wittman, R, Metz, LA, Finn, E C, Friese, JI
Format: Article
Language:English
Subjects:
Boron carbide
Cadmium
Enrichment
Nuclear engineering
Nuclear power generation
Nuclear reactor components
Nuclear reactors
Spectra
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Summary:A boron carbide capsule highly enriched in super(10)B has been designed and used for spectral-tailoring experiments at the TRIGA reactor at Washington State University. New experiments show that enriching the boron to 96% B-10 results in additional absorption of neutrons in the resonance region thereby producing a neutron spectrum that is much closer to a pure super(235)U fission spectrum than measured previously with a natural boron carbide capsule. A cadmium outer cover was used to reduce thermal alpha heating. The neutron spectrum calculated with MCNP was found to be in very good agreement with measured activation rates from neutron fluence monitors.
ISSN:0168-9002
DOI:10.1016/j.nima.2014.01.013