Radiant energy – Calibration or standardization methods
Patent
1998-06-16
2000-07-11
Hannaher, Constantine
Radiant energy
Calibration or standardization methods
250305, 25036301, 250261, G01D 1800, G01V 504, G01T 1208
Patent
active
060876565
ABSTRACT:
A closed-loop stabilization system and method for a radiation detector system including a scintillator and a light sensing device for detecting the scintillation light produced in the scintillator through interaction with impinging radiation. A spectrally stable gamma ray measurement for downhole and other non-isothermal gamma ray measurement applications is obtained by use of a light source for emitting photons, preferably ultra-violet photons, into the scintillator that are not detectable by the light sensing device. The light source causes the scintillator to fluoresce at a wavelength detectable by the light sensing device, and the change in measured fluorescence is used to adjust system gain to account for variations in scintillator output attributable to environmental conditions. In this manner, the stabilization system adjusts the system gain to maintain consistency among radiation measurements over a wide temperature range.
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Ejaz Muhammad
Grodsinsky Carlos
Kimmich Kevin
Bulson D. W.
Gagliaroi Albert
Hannaher Constantine
Saint-Gobain Industrial Cermaics, Inc.
Ulbrich V. R.
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