Preparation and evaluation of P-47 scintillators for a scanning electron microscope

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Abstract
Plastic scintillators commonly in use in the secondary-electron detectors of scanning electron microscopes are known to deteriorate rapidly, particularly under conditions of operation at high electron beam currents. A simple method is described for the production of scintillators from P-47 phosphor powder which is known to have excellent durability. The performance, evaluated in terms of the signal-to-noise ratio, detective quantum efficiency and relative light output, is correlated with the surface coverage of the phosphor layers, and compared with some commercial plastic and powder scintillators.

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