LABR3 SCINTILLATION DETECTOR AND SPECIFIC EVENT REMOVAL METHOD
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United States of America Patent
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Feb 10, 2016
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Feb 25, 2015
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Abstract
The present invention identifies α decay and other events included in the emission of an LaBr3 scintillator and only collects γ ray events. An LaBr3 scintillation detector is provided with an LaBr3 scintillator 10, a photomultiplier tube 12, an oscilloscope 14, and a computer 18. The computer 18 detects a peak value Vp and a total charge amount Qtotal of a voltage waveform signal and calculates an error propagation expression function for a ratio of the peak value Vp to the total charge amount Qtotal. This error propagation expression function is used as a threshold function for identifying and removing α decay events. The α decay events are identified from the peak value Vp and total charge amount Qtotal, which are measurement values that can be measured in real time.
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