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Related to cathodoluminescence: Photoluminescence, electroluminescence


A luminescence resulting from the bombardment of a substance with an electron (cathode-ray) beam. The principal applications of cathodoluminescence are in television, computer, radar, and oscilloscope displays. In these a thin layer of luminescent powder (phosphor) is evenly deposited on the transparent glass faceplate of a cathode-ray tube. After undergoing acceleration, focusing, and deflection by various electrodes in the tube, the electron beam originating in the cathode impinges on the phosphor. The resulting emission of light is observed through the glass faceplate, that is, from the unbombarded side of the phosphor coating.

The luminescence of most phosphors comes from a few sites (activator centers) occupied by selected chemical impurities which have been incorporated into the matrix or host solid. Because of the complex mode of interaction of cathode rays with phosphors, the energy efficiency of light production by cathodoluminescence is lower than the best efficiencies obtainable with photoluminescence. Conversion efficiencies of currently used display phosphors are between 2 and 23%. See Luminescence


Luminescence produced when high-velocity electrons bombard a metal in vacuum, thus vaporizing small amounts of the metal in an excited state, which amounts emit radiation characteristic of the metal. Also known as electronoluminescence.
References in periodicals archive ?
1991, Using cathodoluminescence to map regionally zoned carbonate cements occurring in diagenetic aureoles above oil reservoirs: initial results from the Velma off field, Oklahoma, in Barker, C.
PHOTO : Cathodoluminescence (CL) micrograph of a buildup showing a large crystal of corundum (dk red to black), bladed crystals of hibonite or [Ca.
Contact point(s): Renseignements dordre technique / appel doffres 15-01 / Fourniture dun equipement de cathodoluminescence
Zhitaru, Some peculiarities of the cathodoluminescence of indented MgO crystals.
The company's core expertise is a measurement technique called cathodoluminescence, a non-destructive characterization method yielding a level of data that provides a deeper understanding of material structures and properties.
Stand-alone chapters, written by academics and research chemists in private, government, and military laboratories, cover a range of methodologies, including mass spectrometry, Fourier transform infrared microspectroscopy, cathodoluminescence, and statistical validation.
Topics include the structure and properties of a specific John-Teller polaron, GaN-based spintronics, a new compound and its homologues exhibiting strong magnetic frustration, the nonlinear dynamics of ID classical magnetic systems, anisotropic domain walls in magnetic nanostructures with perpendicular anisotrophy, the use of polarized neurons in condensed matter research in Australia and solid state cathodoluminescence.
Mariano, Cathodoluminescence and microprobe study of rareearth elements in apatite.