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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
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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.


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Word History and Origins

Origin of electron multiplier1

First recorded in 1935–40

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