scintillation phosphor

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• scintillation — [sint΄ l ā′shən] n. [L scintillatio] 1. the act of scintillating; sparkling 2. a spark; flash 3. a brilliant display of wit 4. Astron. the twinkling of the stars caused by density changes in the atmosphere 5. Nuclear Physics the flash of light… …   English World dictionary

• scintillation counter — n. an instrument for detecting and measuring the scintillations induced by ionizing radiation in a crystal or phosphor …   English World dictionary

• Scintillation counter — A scintillation counter measures ionizing radiation. The sensor, called a scintillator, consists of a transparent crystal, usually phosphor, plastic (usually containing anthracene), or organic liquid (see liquid scintillation counting) that… …   Wikipedia

• Phosphor — A phosphor is a substance that exhibits the phenomenon of phosphorescence (sustained glowing after exposure to energized particles such as electrons).Phosphors are transition metal compounds or rare earth compounds of various types. The most… …   Wikipedia

• scintillation — /sin tl ay sheuhn/, n. 1. the act of scintillating; sparkling. 2. a spark or flash. 3. Astron. the twinkling or tremulous effect of the light of the stars. 4. Meteorol. any small scale twinkling or shimmering of objects that are viewed through… …   Universalium

• scintillation — 1. Flashing or sparkling; a subjective sensation as of sparks or flashes of light. 2. In radiation measurement, the light produced by an ionizing event in a phosphor, as in a crystal or liquid scintillator. SEE ALSO …   Medical dictionary

• scintillation — noun Date: circa 1623 1. an act or instance of scintillating; especially rapid changes in the brightness of a celestial body 2. a. a spark or flash emitted in scintillating b. a flash of light produced in a phosphor by an ionizing event 3. a… …   New Collegiate Dictionary

• phosphor — 1. A chemical substance that transforms incident electromagnetic or radiation energy into light, as in scintillation radioactivity determinations or radiographic intensifying screens or image amplifiers. 2. Any substance capable of exhibiting …   Medical dictionary

• scintillation — noun 1》 a flash of light.     ↘the process or state of emitting flashes. 2》 Physics a small flash of visible or ultraviolet light emitted by fluorescence in a phosphor when struck by a charged particle or high energy photon. 3》 Astronomy the… …   English new terms dictionary

• scintillation — scin•til•la•tion [[t]ˌsɪn tlˈeɪ ʃən[/t]] n. 1) the act of scintillating 2) a spark or flash 3) astron. the twinkling or tremulous effect of the light of the stars 4) phs a flash of light from the ionization of a phosphor struck by an energetic… …   From formal English to slang

• radiation measurement — ▪ technology Introduction       technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement.       The term ionizing radiation refers to those… …   Universalium