NEUTRON-FLUX GAGE FOR NUCLEAR REACTORS

Patent · Tue Feb 14 04:00:00 EST 1961

OSTI ID:4052726

Janner, K

A neutron-flux gage for use with a nuclear reactor is descrobed. The gage consists of a neutron-flux detector or probe, such as an ionization chamber or counter, which is enclosed in a jacket composed of three functionally different layers. One of the layers consists of moderator substance of great diffusion length, such as graphite or beryllium. Another layer consists of reflector substance of smaller diffusion length, such as paraffin or polyethylene. The third layer is a strong neutron absorber and may consist of a coating of boron. A gamma absorber plate, such as bismuth, is placed in front of the Jacketed probe for incressing the sensitivity and/or the ratio of measuring value to noise level. The plate is mounted on the outer wall of the reector. A fissionuble material, such as a uranium plate, is mounted in front of the jacketed probe within the reactor vessel and preferably within the reflector zone of the reactor. This material increases the sensitivity of the detector. (N.W.R.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-15-020928
• OSTI ID: 4052726
• Report Number(s): CA 614694
• Country of Publication: Canada
• Language: English

Related Subjects

ABSORPTION
BERYLLIUM
BISMUTH
BORON
COATING
CONTROL SYSTEMS
COUNTERS
ENGINEERING AND EQUIPMENT
GAGES
GAMMA RADIATION
GRAPHITE
IONIZATION CHAMBERS
MODERATORS
NEUTRON FLUX
PARAFFIN
PLATES
POLYETHYLENES
REACTORS
REFLECTORS
SENSITIVITY
URANIUM