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Glossary terms about Photomultiplier

Photomultipliers are used to detect and amplify low intensities of light.

5 pages mention Photomultiplier

Background information - What is scanning electron microscopy?
Images from electrons
Signals generated from the specimen are collected by an electron detector, converted to photons via a scintillator, amplified in a photomultiplier, and converted to electrical signals and used to modulate the intensity of the image on the viewing screen. 
Practical uses for the SEM
Scan rate and signal to noise ratios
the photomultiplier tube) in order to produce an image.