Examples of using Electron beam in English and their translations into Hebrew
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Colloquial
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Ecclesiastic
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Computer
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Programming
Electron Beam welding.
CT scanning systems with electron beam.
Electron Beam Tomography.
Hardness, Brinell, electron beam ingot: 60.
Electron Beam Welding- requires advanced equipment.
This experiment takes an electron beam and transmits it through a piece of graphite.
EBW is oftenperformed under vacuum conditions to prevent dissipation of the electron beam.
Electron beam technology Ion beam lithography Maskless lithography Photolithography.
Other welding methods used for these material include gas metal arc welding(GMAW),plasma arc welding, electron beam welding and resistance welding.
Electron Beam Welding produces excellent quality welds which are characterized by narrow weld zones and good penetration.
By rotation of dish-shaped X-ray targets under the electron beam, a new, already cooled part of the target surface is continually used as the focal spot.
Electron-beam physical vapor deposition, or EBPVD, is a form of physical vapor deposition in which a target anode is bombarded with an electron beam given off by acharged tungsten filament under high vacuum. The electron beam causes atoms from the target to transform into the gaseous phase. These atoms then precipitate into solid form, coating everything in the vacuum chamber(within line of sight) with a thin layer of the anode material.
As is the case with electron microscopy,the method is generally based on the concept of an electron beam being directed at an object and diffracted as a result.
There are also welding machines in which the electron beam is brought out of vacuum into the atmosphere. With such equipment very large objects can be welded without huge working chambers.
It can be more than three-phase, there may create various resonance and interference,and may affect other on that place appearing electron beams and thus"paint on the field" many various symmetrical crop circle pictograms.
To explain the capability of the electron beam to produce deep and narrow welds, the process of"penetration" must be explained. First of all, the process for a"single" electron can be considered.
To avoid chemical interactions between the filament and the ingot material, the filament is kept out of sight.A magnetic field is employed to direct the electron beam from its source to the ingot location. An additional electric field can be used to steer the beam over the ingot surface allowing uniform heating.
Since the CRT can only bend the electron beam through a critical angle while still maintaining focus, the electron gun has to be located some distance from the front face of the television.
Vacuum metallizing involves heating the coating metal to its boiling point in a vacuum chamber, then letting condensation deposit the metal on the substrate's surface.Resistance heating, electron beam, or plasma heating is used to vaporize the coating metal. Vacuum metallizing was used to deposit aluminum on the large glass mirrors of reflecting telescopes, such as with the Hale telescope.
Gold produces a highoutput of secondary electrons when irradiated by an electron beam, and these low-energy electrons are the most commonly used signal source used in the scanning electron microscope.
An electron lithographis produced by a very finely focused electron beam, which creates micro-structures in the resist that can subsequently be transferred to the substrate material, often by etching. It was originally developed for manufacturing integrated circuits and is also used for creating nanotechnology architectures. Electron lithographs uses electron beams with diameters ranging from two nanometers up to hundreds of nanometers.
The rapid increase of temperature at the location of impact can quickly melt a target material. In extreme working conditions, the rapid temperature increase can even lead to evaporation, making an electron beam an excellent tool in heating applications,such as welding. Electron beam technology is used in cable-isolation treatment, in electron lithography of sub-micrometer and nano-dimensional images, in microelectronics for electron-beam curing of color printing[ 1] and for the fabrication and modification of polymers, including liquid-crystal films, among many other applications.
Lightning discharges are something like electron beams, and there are in progress extremely high electrostatic and electromagnetic fields, able to change direction of such beams like TV or oscilloscope vacuum tube.
Not all materials can be welded by an electron beam in a vacuum. This technology cannot be applied to materials with high vapour pressure at the melting temperature, like zinc, cadmium, magnesium and practically all non-metals.
Since producing the first laser-plasma-driven electron beams in the late 1980s, Prof. Malka has demonstrated new applications in many diverse fields such as medicine, aerospace, and security- for instance, for scanning a truck for hidden explosives- and more.
It is also possible to imagine that during an impact of electron beam, in the case of consecutive or paralel lightning discharges, that is streaming throughout the very strong rotating electromagnetic field may arise highly symmetrical crop circle pictograms, according to many axes.
Having already succeeded in'filming' inter-molecular chemical reactions--using the electron beam of a transmission electron microscope(TEM) as a stop-frame imaging tool-- they have now achieved time-resolved imaging of atomic-scale dynamics and chemical transformations promoted by metal nanoclusters.