Detectors 191
Detectors 191 : Particle Detectors: (4.25) Single-Photon Avalanche Diode: (1) Operating Principle: (1. 3) Photon Counting and Timing: The intensity of the signal is obtained by counting (photon counting) the number of output pulses within a measurement time slot, while the time-dependent waveform of the signal is obtained by measuring the time distribution of the output pulses (photon timing). The latter is obtained by means of operating the Single Photon Avalanche Diode (SPAD) detector in Time Correlated Single Photon Counting (TCSPC) mode
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