INVESTIGATION OF SOURCE-DEPENDENT CONTRIBUTIONS TO PHOTOMULTIPLIER NOISE

Authors
  1. Johnson, F.A.
Corporate Authors
Defence Research Establishment Ottawa, Ottawa ONT (CAN)
Abstract
Fast pulses produced at the output of a photomultiplier as a result of the interaction of low-energy gamma-rays in the glass faceplate are shown to have similar characteristics to those due to Cerenkov events generated there by high-energy gammar-rays. In both cases the pulses can be distinguished from those produced by gamma-ray interactions in a scintillator which is viewed by the photomultiplier. On the basis of fast-crossover-timing and pulse-height-distribution measurements it is concluded that visible light, produced in the glass faceplate by the low-energy gamma-rays, is responsible for the pulses observed.
Report Number
624 —
Date of publication
01 Jan 1970
Number of Pages
6
Reprinted from
Reprinted from Nuclear Instruments and Methods, vol 87, no 2, 1970, p 215-220
DSTKIM No
71-02569
CANDIS No
8890
Format(s):
Hardcopy;Originator's fiche received by DSIS

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