electron gun

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electron gun

n.
An electrode, especially in a cathode-ray tube, that produces a beam of accelerated electrons.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

electron gun

n
(Electronics) a heated cathode with an associated system of electrodes and coils for producing and focusing a beam of electrons, used esp in cathode-ray tubes
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

elec′tron gun`


n.
a device consisting of a cathode-ray tube and a surrounding electrostatic or electromagnetic apparatus, which emits, focuses, and accelerates a stream of electrons (elec′tron beam`).
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.electron gun - the electrode that is the source of electrons in a cathode-ray tube or electron microscope; consists of a cathode that emits a stream of electrons and the electrostatic or electromagnetic apparatus that focuses it
cathode-ray tube, CRT - a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen
electrode - a conductor used to make electrical contact with some part of a circuit
electron microscope - a microscope that is similar in purpose to a light microscope but achieves much greater resolving power by using a parallel beam of electrons to illuminate the object instead of a beam of light
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

electron gun

nproiettore m elettronico
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
References in periodicals archive ?
Televisions were originally fitted with cathode ray tubes, vacuum tubes containing one or more electron guns and a fluorescent screen used to view images.
SBCL manufactures different grades of thermostatic-type bimetal and tri-metal strips and parts (both cladded and electron beam welded), electron beam welded Cu-Manganin-Cu Shunt material, components of CPT, electron guns, reflow solder etc.
The technique can also be applied to determine cathode shapes for uniform flux electron guns. Computer modeling of charged particle beams is an important part in the investigation of processes that take place in different electro-physical equipments.
Field-emission cathode gating for rf electron guns, Physical Review Special topics-Accelerators and Beams vol.
At present electron guns on basis of high-voltage glow discharge (HVGD) with cold cathode are used for electron beam melting and welding of thin-wall items on ever growing scale.
Oks (senior scientist and leader of the plasma sources department, Institute of High Current Electronics, Russian Academy of Sciences) reviews the current state of the field and its development since 1989's Plasma Processes in Technological Electron Guns, concentrating equally on providing physical understanding of the basic processes involved in plasma electron meission and on considering the design and applications of plasma- cathode electron-beam sources.
The electrons originate from electron guns that spray a beam of electrons onto the inside face of the tube, which is coated with phosphors-chemical compounds that kick off photons (light) of specific wavelengths when they're struck by electrons.
Hertz or the vibration caused by the tracking of the electron guns causes flicker, and that flicker in turn could cause eyestrain and even seizures in those disposed to visual epilepsy.
With the very high energies from these sources, subatomic particles of light gases can be manipulated to efficiently generate low thrust energy by using electron guns, electrical fields, magnetic fields, electric currents, lasers, radio waves, or combinations thereof.
These advances include: (1) field-emission gun electron beam instruments such as scanning electron microscopes (FEG-SEMs) that have high brightness electron guns with excellent performance at low beam energies, [E.sub.0] [less than or equal to] 10 keV and (2) high-resolution energy-dispersive x-ray spectrometers, like the microcalorimeter detector, that provide high-resolution (< 10 eV) parallel x-ray collection.
When exposed, unheated, to an electric field, the nanotubes behave like tiny electron guns.

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