Detector for positron annihilation life spectrometer
A positron annihilation and detector technology, which is used in instruments, scientific instruments, material analysis by measuring secondary emissions, etc., can solve problems such as poor time resolution, avoid light and electromagnetic interference, improve time resolution, and improve The effect of detection efficiency
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[0052] The present invention is a detector of a positron annihilation lifetime spectrometer. The positron annihilation lifetime spectrometer includes two scintillation detectors; refer to figure 2 and image 3 , figure 2 It is a structural schematic diagram of the initial track detector of the present invention; image 3 It is a structural schematic diagram of the stop track detector of the present invention; the start track detector 1 and the stop track detector 2 respectively comprise a first scintillator 3 and a second scintillator 4, and the start track detector 1 and the stop track detector 2 simultaneously It also includes a CF4 film 16, a photomultiplier tube 5, a corresponding high voltage divider circuit 6 and an outer shell 10 respectively.
[0053] The present invention adopts well-type stop track detector 2, promptly has a circular well 7 in the center of the second scintillator 4 of described stop track detector 2, is used to place sample and when measuring s...
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