AMPLITUDE DISTRIBUTION OF PHOTOMULTIPLIER SINGLE ELECTRON RESPONSE
An experimental study was made of the amplitude distribution of photomultiplier anodic pulses, arising from individual electrons emitted by the cathode. The overall distribution differs from the expected one for electrons starting from the photocathode, on account of contribution of chains originating from dynodes owing to thermoelectronic emission. If chains originating from the photocathode are selected for the measurements, the distribution agrees remarkably well with theoretical results of Janossy and of Lombard and Martin. The agreement is good if care is taken that other statistical phenomena, such as electron selection through focalization effects are not involved in the multiplication mechanism. The accuracy of evaluating the gain of the photomultiplier through the integral amplitude distribution of output pulses under weak illumination as suggested by Colgate is discussed. (auth)
- Research Organization:
- INFN, Milan
- NSA Number:
- NSA-17-027659
- OSTI ID:
- 4696330
- Journal Information:
- Energia Nucl. (Milan), Journal Name: Energia Nucl. (Milan) Vol. Vol: 10
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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