Threshold self-powered gamma detector for use as a monitor of power in a nuclear reactor

Patent · 01 January 1978

OSTI ID:863094

LeVert, Francis E ^[1]; Cox, Samson A ^[2]

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1. Chicago, IL
2. Darien, IL

A self-powered gamma monitor for placement near the core of a nuclear reactor comprises a lead prism surrounded by a coaxial thin nickel sheet, the combination forming a collector. A coaxial polyethylene electron barrier encloses the collector and is separated from the nickel sheet by a vacuum region. The electron barrier is enclosed by a coaxial stainless steel emitter which, in turn, is enclosed within a lead casing. When the detector is placed in a flux of gamma rays, a measure of the current flow in an external circuit between emitter and collector provides a measure of the power level of the reactor.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4091288
• OSTI ID: 863094
• Country of Publication: United States
• Language: English

Related Subjects

/250/
barrier
casing
circuit
coaxial
collector
combination
comprises
core
current
current flow
detector
electron
emitter
enclosed
encloses
external
external circuit
flow
flux
forming
gamma
gamma detector
gamma ray
gamma rays
lead
level
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monitor
near
nickel
nuclear
nuclear reactor
placed
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polyethylene
power
power level
prism
provides
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reactor
reactor comprises
region
self-powered
self-powered gamma
separated
sheet
stainless
stainless steel
steel
surrounded
threshold
vacuum
vacuum region