Medical dictionary. 2011.
scintillation counter — n a device for detecting and registering individual scintillations (as in radioactive emission) called also scintillometer * * * a device to measure and record the fluorescent flashes in a scintillator exposed to high energy radiation. * * * an… … Medical dictionary
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
scintillation counter — a device for detecting and measuring radioactivity, having a crystal scintillator, a photoelectric cell sensitive to the light from scintillations, and an amplifier. Also called scintillometer /sin tl om i teuhr/. [1945 50] * * * ▪ instrument… … Universalium
scintillation counting — Technique for measuring quantity of a radioactive isotope present in a sample. In biology, liquid scintillation counting is mainly used for b emitters such as 14C, 35S and 32P and particularly for the low energy b emission of 3H. Gamma emissions… … Dictionary of molecular biology
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
Scintillator — Scintillation crystal surrounded by various scintillation detector assemblies … Wikipedia
Cadmium tungstate — (CdWO4 or CWO) is a dense, chemically inert solid which is used as a scintillation crystal to detect gamma rays. It has density of 7.9 g/cm3 and melting point of 1325 °C. It is toxic if inhaled or swallowed. Its crystals are transparent,… … Wikipedia
mass spectrometry — or mass spectroscopy Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph … Universalium
