Gain stabilization for radioactivity well logging apparatus
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United States of America Patent
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-
Aug 31, 1982
Grant Date -
N/A
app pub date -
Sep 2, 1980
filing date -
Sep 2, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved gain stabilization system for radioactivity well logging apparatus of the type having a scintillation crystal optically coupled to a photomultiplier, a light emitting diode driven by a pulser and furnishing scintillations to the photomultiplier located in a sonde resulting in a stabilization pulse which is provided to electronic circuitry at the surface for stabilization purposes. The improvement includes a temperature sensor located in the sonde and circuitry for maintaining the intensity of the light provided by the light emitting diode in response to the operation of the temperature sensor.
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