A field emission gun (FEG) is a type of electron gun in which a sharply pointed Müller-type[clarification needed] emitter: 87–128 is held at several kilovolts...
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Field electron emission, also known as field emission (FE) and electron field emission, is emission of electrons induced by an electrostatic field. The...
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A field-emission display (FED) is a flat panel display technology that uses large-area field electron emission sources to provide electrons that strike...
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Electron guns may be classified by the type of electric field generation (DC or RF), by emission mechanism (thermionic, photocathode, cold emission, plasmas...
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regards to cost and availability, with some being radioactive as well. Field emission gun Tungsten oxide List of chemical elements name etymologies List of...
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"Resolution and sensitivity of electron backscattered diffraction in a cold field emission gun SEM". Ultramicroscopy. Frontiers in Electron Microscopy in Materials...
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electron emission specifically refers to emission of electrons and occurs when thermal energy overcomes the material's work function. After emission, an opposite...
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and is operated remotely. The electron source is a Schottky type field emission gun with a relatively low energy spread of 0.8 eV at 300 keV. In order...
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Transmission electron microscopy (section Electron gun)
of an emission source or cathode, which may be a tungsten filament, a lanthanum hexaboride (LaB6) single crystal or a field emission gun. The gun is connected...
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Schottky effect (redirect from Field enhanced thermionic emission)
effect or field enhanced thermionic emission is a phenomenon in condensed matter physics named after Walter H. Schottky. In electron emission devices,...
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1970s, when Albert Crewe at the University of Chicago developed the field emission gun and added a high-quality objective lens to create a modern STEM. He...
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enabled imaging of materials at the atomic scale. In the 1980s, the field emission gun became common for electron microscopes, improving the image quality...
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accessible technique for the user of a standard SEM. In the meanwhile the field emission gun (FEG) had to be developed and integrated in the commercial SEM in...
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needed] Low-voltage SEM is typically conducted in an instrument with a field emission guns (FEG) which is capable of producing high primary electron brightness...
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field enhanced thermionic emission Field electron emission, emission of electrons induced by an electrostatic field An electron gun or electron emitter, is...
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Synchrotron radiation (redirect from Synchrotron emission)
a magnetic field is called cyclotron emission. For particles in the mildly relativistic range (≈85% of the speed of light), the emission is termed gyro-synchrotron...
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anti-inflammatory peptide, and feG, its D-isomeric form Field emission gun, a type of electron gun Ferroelectric generator This disambiguation page lists...
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a brighter electron source in the microscope, positing that cold field emission guns would be feasible. Through this and other iterations, Crewe was able...
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nanophase, while nickel partitions to the chromium-rich nanophase. Using Field Emission Gun Transmission Electron Microscope FEG-TEM, the nanometre-scaled modulated...
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introduced in 1939 by Kossel and Möllenstedt. The development of the Field Emission Gun (FEG) in the 1970s, the Scanning Transmission Electron Microscopy...
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Greenhouse gas (GHG) emissions from human activities intensify the greenhouse effect. This contributes to climate change. Carbon dioxide (CO2), from burning...
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Increasing methane emissions are a major contributor to the rising concentration of greenhouse gases in Earth's atmosphere, and are responsible for up...
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potential of the electron gun is large enough. In this case, the emission current is regulated by the thermionic emission process, given by the Richardson...
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Mössbauer spectroscopy (redirect from Mossbauer emission spectroscopy)
spectroscopy. Just as a gun recoils when a bullet is fired, conservation of momentum requires a nucleus (such as in a gas) to recoil during emission or absorption...
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either through heating (thermionic emission) or in an electric field that is sufficient to cause field electron emission. Once initiated, a vacuum arc can...
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incorporation into the 75 mm field gun. Before this invention, each time an artillery weapon was fired, the entire gun would be pushed backwards by the...
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for the electron source and image processing. More specifically, field emission guns (FEGs) and the reduction of energy variation in the electron source...
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Electron-beam welding (section Electron gun)
gained by thermo-emission from a hot metal strap (or wire). They are then accelerated and formed into a narrow beam by an electric field produced by three...
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pointed) tip. This bias voltage creates a repulsive electrostatic field that suppresses emission of electrons from most areas of the cathode. The emitter tip...
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J. (1962). "Optique corpusculaire—premiers essais de microanalyse par emission ionique secondaire". Microscopie. 1: 395–399. Wittmaack, K. (1975). "Pre-equilibrium...
18 KB (2,250 words) - 18:36, 29 August 2024