electron gun


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electron gun

n.
An electrode, especially in a cathode-ray tube, that produces a beam of accelerated electrons.

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

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`).
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
Translations

electron gun

nproiettore m elettronico
References in periodicals archive ?
In a vacuum chamber of the installation the special technological equipment for electronic data processing was placed; there are quartz infrared preheating and final cooling oven, electron gun with Pierce optics to form the strip electron stream, the mechanism of movement of the optical elements.
It also has a new field emission electron gun with a vacuum 100X greater than conventional field emission guns (3 x [10.
An electron gun option is available for analysis of insulating samples.
The E-sail consists of a number of long and thin conductive wires or tethers, which are kept at a positive potential with the help of an onboard electron gun.
The layers were deposited in high vacuum condition, using an electron gun evaporation method with the deposition rate of 0.
At one end of the machine sits an electron gun that shoots electrons into a 3m-long copper tube known as the waveguide.
Using an energy-dispersive x-ray detector, an electron gun, and a computer-controllable sample stage, a multiple-energy hologram of the atomic arrangement around the Ti atom in SrTiO3 was obtained and 3D atomic images of the elements strontium (Sr), titanium (Ti), and oxygen in SrTiO3 were clearly visualized.
After reaching high vacuum, open the valve between the electron gun and sample chamber.
This in turn creates an elevated risk of system failure due to powder contamination of the electron gun.
The photoinjector is a high-brightness electron gun capable of generating extremely short pulses of electrons, less than a hundred picoseconds in duration.
1981) Electron gun of high-voltage glow discharge as a stable heat source in higher gas evolution.
For the irradiation of the polymer sample, an electron gun (7.

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