Gamma counter

A Gamma Counter is a machine to measure gamma radiation emitted by a radionuclide. Up to 300 samples are placed in sealed vials or test tubes, and move along a serpentine track on a horizontal plain. One at a time, they move down inside a shielded detector, set to measure specific energy windows characteristic of the particular isotope. Depending on the half life and concentration of the sample, measurement times vary from 0.02 minute to one minute. Gamma counters are standard tools used in the research and development of new radioactive compounds used for diagnosing and treating disease, (as in PET scanning). A representative unit is the "Gamma 8000", (produced by Beckman) which can be programmed for measuring up to ten different radionuclides.


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • gamma counter — gama kvantų skaitiklis statusas T sritis fizika atitikmenys: angl. gamma counter; gamma ray counter vok. Gamma Zähler, m; Gamma Zählrohr, n rus. гамма счётчик, m; счётчик гамма квантов, m pranc. compteur gamma, m …   Fizikos terminų žodynas

  • gamma-ray counter — gama kvantų skaitiklis statusas T sritis fizika atitikmenys: angl. gamma counter; gamma ray counter vok. Gamma Zähler, m; Gamma Zählrohr, n rus. гамма счётчик, m; счётчик гамма квантов, m pranc. compteur gamma, m …   Fizikos terminų žodynas

  • Gamma-Zähler — gama kvantų skaitiklis statusas T sritis fizika atitikmenys: angl. gamma counter; gamma ray counter vok. Gamma Zähler, m; Gamma Zählrohr, n rus. гамма счётчик, m; счётчик гамма квантов, m pranc. compteur gamma, m …   Fizikos terminų žodynas

  • Gamma-Zählrohr — gama kvantų skaitiklis statusas T sritis fizika atitikmenys: angl. gamma counter; gamma ray counter vok. Gamma Zähler, m; Gamma Zählrohr, n rus. гамма счётчик, m; счётчик гамма квантов, m pranc. compteur gamma, m …   Fizikos terminų žodynas

  • gamma — 1. Third letter of the Greek alphabet, γ. 2. A unit of magnetic field intensity equal to 10−9 T. [G.] * * * gam·ma gam ə n 1) the third letter of the Greek alphabet symbol Gamma or gamma 2) a unit of magnetic flux density equal to one nanotesla… …   Medical dictionary

  • gamma — I. noun Etymology: Middle English, from Late Latin, from Greek, of Semitic origin; akin to Hebrew gīmel gimel Date: 15th century 1. the 3d letter of the Greek alphabet see alphabet table 2. the degree of contrast of a developed photographic image …   New Collegiate Dictionary

  • Gamma-glutamyl carboxylase — is an enzyme which oxidizes Vitamin K hydroquinone to Vitamin K 2,3 epoxide, while simultaneously adding CO2 to protein bound glutamic acid (abbreviation = Glu) to form gamma carboxyglutamic acid (also called gamma carboxyglutamate, abbreviation …   Wikipedia

  • Gamma (satellite) — Infobox Space telescope name = Gamma caption = organization = RKA major contractors = alt names = nssdc id = location = Earth orbit orbit type = height = 375 km period = velocity = accel gravity = launch date = 11 July 1990 launch location =… …   Wikipedia

  • Gamma spectroscopy — The gamma ray spectrum of natural uranium, showing about a dozen discrete lines superimposed on a smooth continuum, allows the identification the nuclides 226Ra, 214Pb, and 214Bi of the uranium decay chain. Gamma ray spectroscopy is the… …   Wikipedia

  • Gamma ray spectrometer — A Gamma Ray Spectrometer, or (GRS), is an instrument for measuring the distribution (or spectrum see figure) of the intensity of gamma radiation versus the energy of each photon. Gamma rays are electromagnetic radiation at the short wavelength,… …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.