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thermionic ion source

См. также в других словарях:

  • RF antenna ion source — An RF antenna ion source (or radio frequency antenna ion source) is an internal multi cusp design that can produce a particle beam of about 30 to 40 mA current. It is used in high energy particle physics and in accelerator laboratories.Previous… …   Wikipedia

  • thermionic emission — n. the phenomenon of electron or ion emission from the heated surface of a conductor * * * ▪ physics       discharge of electrons from heated materials, widely used as a source of electrons in conventional electron tubes (e.g., television picture …   Universalium

  • thermionic power converter — ▪ electronics Introduction also called  thermionic generator,  thermionic power generator,  or  thermoelectric engine        any of a class of devices that convert heat directly into electricity using thermionic emission rather than first… …   Universalium

  • Ion thruster — An ion thruster is a form of electric propulsion used for spacecraft propulsion that creates thrust by accelerating ions. Ion thrusters are characterized by how they accelerate the ions, using either electrostatic or electromagnetic force.… …   Wikipedia

  • thermionic — adjective Etymology: thermion charged particle from an incandescent source, from therm + ion Date: 1909 relating to, using, or being the emission of charged particles (as electrons) by an incandescent material …   New Collegiate Dictionary

  • Cold cathode — This article is about light sources and indicators. For cold cathode ion sources, see Ion source. CCFL redirects here. For other uses, see CCFL (disambiguation). Cold cathode fluorescent lamp A cold cathode is a cathode used within nixie tubes,… …   Wikipedia

  • Debye sheath — The Debye sheath (also electrostatic sheath) is a layer in a plasma which has a greater density of positive ions, and hence an overall excess positive charge, that balances an opposite negative charge on the surface of a material with which it is …   Wikipedia

  • Transmission electron microscopy — A TEM image of the polio virus. The polio virus is 30 nm in size.[1] Transmission electron microscopy (TEM) is a microscopy technique whereby a beam of electrons is transmitted through an ultra thin specimen, interacting with the specimen as it… …   Wikipedia

  • Field electron emission — It is requested that a diagram or diagrams be included in this article to improve its quality. For more information, refer to discussion on this page and/or the listing at Wikipedia:Requested images. Field emission (FE) (also known as field… …   Wikipedia

  • Caesium — xenon ← caesium → barium Rb ↑ Cs ↓ Fr …   Wikipedia

  • electricity — /i lek tris i tee, ee lek /, n. 1. See electric charge. 2. See electric current. 3. the science dealing with electric charges and currents. 4. a state or feeling of excitement, anticipation, tension, etc. [1640 50; ELECTRIC + ITY] * * *… …   Universalium


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