electron multiplier

noun

, Electronics.

1. a vacuum tube containing a number of dynodes that serve to amplify the flow of electrons from the cathode by means of secondary emission.

electron multiplier

noun

1. physics a device for amplifying and measuring a flux of electrons. Each electron hits an anode surface and releases secondary electrons that are accelerated to a second surface; after several such stages a measurable pulse of current is obtained

electron multiplier

1. An electrical component in which a single electron can create a large current flow. Electron multipliers are used in photomultipliers, particle detectors, and electron microscopes.
2. ◆ In tube electron multipliers , electrons released from a cathode collide with a dynode or anode, causing release of more electrons through secondary emission ; this process is generally repeated through a number of stages to achieve great amplification of current. Electron multipliers are also called electron amplifiers.

Word History and Origins

Origin of electron multiplier¹

First recorded in 1935–40