electron multiplier

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noun Electronics.

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

Origin:
1935–40

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins

World English Dictionary

electron multiplier

—n
	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 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Electron multiplier is always a great word to know.

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the offspring of a zebra and a donkey.

a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.

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American Heritage

Science Dictionary

electron multiplier
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. ◇ 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.

Example sentences

The detector system must consist of a single discrete dynode ion-counting electron multiplier or equivalent.

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