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Abstract:
Using the technology of the single photon time resolution, we have studied the time spectra of light emission in LP mode, SQS mode and G-M mode. The results show that the SQS streamer has a delay relative to the primary avalanche and its lasting time is about 10—30us which depends on the contents of the quenching gas and the anode high voltage.The lasting time in the G-M mode is about lμs,and that in the LP mode is only 4ns.This has fully demonstrated that the three modes have quite different characters in their individual avalanches.
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