Neutron detection device for measuring the power of a nuclear reactor
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United States of America Patent
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Jul 4, 1995
Grant Date -
N/A
app pub date -
Oct 25, 1993
filing date -
Nov 4, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This neutron detector device includes a containment inside of which there is mounted a detector and which contains a neutral gas. The detector is formed by a fission type chamber comprising a cylindrical-shaped external electrode, coated with a lining of uranium in metal form, enriched as isotope 235, and a cylindrical-shaped internal electrode coaxial to the external electrode. The containment is of annular shape and arranges a cylindrical center space open at both ends to house a moderator to slow down the fast neutrons with great efficiency with respect to detection. The present invention provides an advantage of making it easy to replace the moderator. It is favorable to use cylindrical electrodes of large diameter thus increasing the sensitivity.
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