photomultiplier

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Related to PM tube: Photomultiplier Tube

pho·to·mul·ti·pli·er

 (fō′tō-mŭl′tə-plī′ər)
n.
An electronic sensing device used to detect weak electromagnetic radiation, typically light, and amplify its energy via the photoelectric effect.

photomultiplier

(ˌfəʊtəʊˈmʌltɪˌplaɪə)
n
(General Physics) a device sensitive to electromagnetic radiation, consisting of a photocathode, from which electrons are released by incident photons, and an electron multiplier, which amplifies and produces a detectable pulse of current

pho•to•mul•ti•pli•er

(ˌfoʊ təˈmʌl təˌplaɪ ər)

n.
a light detector that amplifies a photon's signal by using a photocathode and a series of electrodes to create a cascade of electrons.
[1935–40]