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electron beam Dictionary Terms

scanning beam
A light, radar or electron beam used to scan according to a particular method.
stroke pattern
The pattern formed by a character generation cathode-ray tube system, in which the characters are composed of a sequence of...
scanning electron microscopy
Scanning electron microscopy (SEM) is an advanced imaging technique used in microscopy to obtain high-resolution,...
quadrupole lens
A device used in electron microscopes and particle accelerators to focus electron beams by the arrangement of four...
induction linear accelerator
A device used to accelerate the electrons in a free-electron laser by supplying electrical energy to the electron beam...
convergence
1. In optics, the bending of light rays toward each other, as by a convex or positive lens. 2. Turning in the eyes to view a...
deflection focusing
The progressive defocusing of a cathode-ray tube display image that occurs when the deflected electron beam impinges on the...
microscopy
Microscopy is a scientific technique that involves the use of microscopes to observe and study objects that are too small to...
microlithography
A technique for producing micron-size structures on surfaces by using short-wavelength light or electron beams.
beam position
In computer graphics, the point on the display screen where the electron beam is located before the display instruction is...
orthicon
A television camera tube in which a low-velocity electron beam scans a photoactive mosaic that has been created by an...
fluorescent screen
A fluorescent screen refers to a phosphorescent or fluorescent-coated surface that emits visible light when exposed to other...
electron micrograph
The photographic recording of images produced by the electrons from an electron microscope. The electron beam carries the...
electron microradiography
The photographic recording, and later enlarging, of very thin specimens, using an electron beam to form the image.
electron-beam lithography system
An electron-beam lithography (EBL) system is a sophisticated nanofabrication tool used in the semiconductor industry and...
target
1. The anode or anticathode of an x-ray tube that emits x-rays when bombarded by electrons. 2. The screen in a television...
vertical retrace
With respect to television, the returning direction of the electron beam during the vertical blanking period.
microwave phototube
A device designed to detect microwave modulation and to mix modulated and unmodulated laser beams. It consists of a...
masks for evaporation/deposition
In the context of thin film deposition processes such as evaporation or sputtering, masks are used to selectively deposit...
electron beam
A stream of electrons emitted by a single source that move in the same direction and at the same speed.
monoscope cathode-ray tube
A character generation CRT that functions on the principle of secondary emission. The target holds a set of aluminum...
electron-beam film scanning
The method by which photographic film is scanned by an electron beam. One technique uses the uniform light of a television...
focusing coil
A coil used to focus an electron beam by the generation of a magnetic field parallel to the beam.
electrostatic deflection
The deflection of an electron beam by the action of an electrostatic field that has a component perpendicular to the...
electrostatic lens
The electrical distribution that serves to influence an electron beam in the same way that an optical lens affects a light...
electrostatic focus
The use of an applied electrical field to focus a cathode-ray tube's electron beam.
plasma-cathode electron gun
An electron beam gun in which plasma that is generated within a low-voltage hollow-cathode discharge serves as the source of...
Wehnelt cylinder
Also known as cathode-ray tube grid or shield. A cylindrically shaped electrode that, containing the cathode of a...
electron power tube
An electron-beam tube with power-handling capability that is essentially based on controlled electron beams. Its control and...
iconoscope
A camera tube that employs a high-velocity electron beam to scan a photoemissive mosaic and to store electrical charge...
deflection circuit
The circuit that regulates an electron beam's deflection in a cathode-ray tube.
double-beam CRT
A cathode-ray tube that either splits an electron beam from one source or uses beams from two sources to produce two beams,...
scanning electron microscope
A scanning electron microscope (SEM) is a powerful imaging instrument used in scientific research, materials...
cathode-ray tube pattern
The luminous trace formed on the cathode-ray tube screen by the motion of the electron beam.
transmission electron microscope
A transmission electron microscope (TEM) is a powerful microscopy technique that uses a beam of electrons to create...
electron-beam recording
The recording of the information contained in a modulated electron beam onto photographic or silicon resin-coated materials....
fluorescence photography
The photographic recording of a subject that exhibits luminescence only for an extremely short time (10-8 s) after the...
shadow mask tube
A type of color-generating cathode-ray tube that uses a shadow mask, a thin perforated electrode, located close to the...
camera tube target
The storage surface of an electron beam tube that is scanned by an electron beam to generate an output-signal current...
free-electron laser
A free-electron laser (FEL) is a type of laser that generates coherent, high-intensity electromagnetic radiation by using a...
electron microscope
A device utilizing an electron beam for the observation and recording of submicroscopic samples with the aid of photographic...
beam deflection tube
An electron-beam tube in which the current to an output electrode is regulated by the transverse motion of the tube's...
kinescope
A cathode-ray tube that serves as a picture tube in a television receiver. The signal representing the picture intensity is...
flyback
The time it takes a cathode-ray tube's electron beam to return to its starting point after completing one line, one field or...
permanent magnetic focusing
The focusing of an electron beam by a magnetic field that permanently retains the majority of its magnetic properties.
oscilloscope
A system in which a supplied signal causes the deflection of the electron beam in a cathode-ray tube, thus forming a visible...
horizontal blanking interval
In television, the period during which the electron beam is cut off while the raster returns from the right-hand side of the...
electron-gun system
An electron-gun system is an assembly used to generate and control a focused beam of electrons. Electron guns find...
cadmium sulfide
An inorganic compound, yellow to orange in color, that fluoresces strongly enough when bombarded by a high-current-density...
beta fluorography
The use of a short-duration electron beam to record high-speed events that occur in microscopic objects made of materials...
intensity modulation
The process in which the electron beam of a cathode-ray tube varies in intensity in accordance with the magnitude of the...
light valve
With respect to display systems, a device that uses an independent light source and a control-layer medium, the active...
ultrasonic camera
A device that uses a piezoelectric crystal to convert ultrasonic sound waves, transmitted through a subject, into a voltage...
backward-wave oscillator
An amplifying device with a wide tuning range in which an electron gun sends a beam of electrons into a slow-wave structure....
camera tube
The electron beam tube of a television camera that converts an optical image into a pattern of electrostatic charges and...
focusing anode
One of the electrodes used to focus the electron beam of a cathode-ray tube. As the electrode's voltage is changed, its...
x-ray tube target
Also known as an anticathode. An electrode or electrode section that is focused upon by an electron beam and that emits...
additive manufacturing
Additive manufacturing (AM), also known as 3D printing, is a manufacturing process that involves creating three-dimensional...
ionic focusing
Also known as gas focusing. The introduction of an inert gas into a cathode-ray tube for the concentration of the electron...
vertical-deflection electrodes
Two electrodes that shift the electron beam vertically on a cathode-ray tube screen using electrostatic deflection.
electron probe microanalysis
An analytical technique used to determine the nature of extremely small samples by forming the x-ray spectrum of the samples...
deflection yoke
A metal coil or coils wrapped around the outside of the neck of a cathode-ray tube. Current passing through the coils...
electron mirror
An electron instrument used to reflect an electron beam totally.
cathode-ray tube
A vacuum tube with an electron gun at one end and a fluorescent screen at the other. Electrons emitted from a heated...
phosphor
A chemical substance that exhibits fluorescence when excited by ultraviolet radiation, x-rays or an electron beam. The...

(65 results found)

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