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

Abstract

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.

Inventors:
 [1];  [2]
  1. Chicago, IL
  2. Darien, IL
Issue Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
OSTI Identifier:
863094
Patent Number(s):
4091288
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01T - MEASUREMENT OF NUCLEAR OR X-RADIATION
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
threshold; self-powered; gamma; detector; monitor; power; nuclear; reactor; placement; near; core; comprises; lead; prism; surrounded; coaxial; nickel; sheet; combination; forming; collector; polyethylene; electron; barrier; encloses; separated; vacuum; region; enclosed; stainless; steel; emitter; casing; placed; flux; rays; measure; current; flow; external; circuit; provides; level; external circuit; gamma rays; gamma ray; power level; nuclear reactor; stainless steel; current flow; reactor comprises; self-powered gamma; vacuum region; gamma detector; /250/

Citation Formats

LeVert, Francis E, and Cox, Samson A. Threshold self-powered gamma detector for use as a monitor of power in a nuclear reactor. United States: N. p., 1978. Web.
LeVert, Francis E, & Cox, Samson A. Threshold self-powered gamma detector for use as a monitor of power in a nuclear reactor. United States.
LeVert, Francis E, and Cox, Samson A. Sun . "Threshold self-powered gamma detector for use as a monitor of power in a nuclear reactor". United States. https://www.osti.gov/servlets/purl/863094.
@article{osti_863094,
title = {Threshold self-powered gamma detector for use as a monitor of power in a nuclear reactor},
author = {LeVert, Francis E and Cox, Samson A},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1978},
month = {1}
}

Patent:

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