You searched for: “photomultiplier
electron multiplier phototube, electron-multiplier phototube, multiplier phototube, photoelectric electron-multiplier tube, photomultiplier, photomultiplier tube
A phototube with one or more dynodes (electrodes the primary function of which is secondary emission of electrons) between its photocathode (photosensitive surface that emits electrons when exposed to light or other suitable radiation) and the output electrode.

The electron stream from the photocathode is reflected off each dynode in sequence, with a secondary emission adding electrons to the stream at each reflection.

This entry is located in the following unit: electro-, electr-, electri- (page 50)
Word Entries containing the term: “photomultiplier
electrostatic photomultiplier
An electrical device designed for the detection of weak electromagnetic radiation, usually light, by amplifying the energy of the photons that strike it into stronger electrical signals whose electrostatic fields cause the electron stream to be reflected off each dynode in turn.

A dynode is an electrode whose primary function is the secondary emission of electrons.

This entry is located in the following unit: electro-, electr-, electri- (page 84)
Word Entries at Get Words: “photomultiplier
photomultiplier
An electronic device used to amplify low-intensity light signals by converting them into electrons.

The acceleration of these electrons leads to a cascade, and a relatively large output signal for a small input signal.

This entry is located in the following unit: Astronomy and related astronomical terms (page 19)