Abstract
This article shows that the availability of photomultipliers with gains of about 2 × 106 to 108 has obviated the need for an amplifier and that a system having no amplifier and a cooled photomultiplier does not require a pulse height discriminator for efficient operation.
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References
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DAGNALL, R., SHARP, B. & WEST, T. Simplified Photon Counting System for Measurement of Low Radiation Levels. Nature Physical Science 235, 65–67 (1972). https://doi.org/10.1038/physci235065a0
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DOI: https://doi.org/10.1038/physci235065a0
