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GAMMA SPECTROMETER [1 record]

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Alphabetical list of terms

Record 1 2013-06-26

English

Subject field(s)
  • Scientific Instruments
  • Electromagnetic Radiation
  • Remote Sensing
  • Cartography
DEF

An instrument for determining the energy distribution of gamma rays.

CONT

Gamma rays are electromagnetic radiation at the short-wavelength, or high-frequency, end of the electromagnetic (EM) spectrum, which ranges from gamma rays (short) to radio (long). The study and analysis of gamma-ray spectra for scientific and technical use is called gamma spectroscopy, and gamma-ray spectrometers are the instruments which observe and collect such data. Because the energy of each photon of EM radiation is proportional to its frequency, gamma rays have sufficient energy that they are typically observed by counting individual photons.

OBS

The gamma-ray spectrometer is used for detecting iron, magnesium titanium, thorium and potassium. It is also used for identifying samples of unknown composition.

OBS

gamma ray spectrometer: term standardized by the International Electrotechnical Commission (IEC).

French

Domaine(s)
  • Instruments scientifiques
  • Rayonnements électromagnétiques
  • Télédétection
  • Cartographie
DEF

Appareil qui permet de déterminer le spectre d'énergie des rayons gamma.

CONT

Les spectromètres à rayons gamma actuels permettent de donner une analyse précise [...] et rapide de la concentration en uranium, thorium et potassium dans les roches ou les sols. [...] Les spectromètres à rayons gamma fonctionnent sur le même principe que le scintillomètre à l'exception qu'ils utilisent les caractéristiques relatives à l'intensité ou l'énergie spécifique des rayons gamma des isotopes radioactifs.

OBS

spectromètre gamma : terme normalisé par la Commission électrotechnique internationale (CEI).

Spanish

Campo(s) temático(s)
  • Instrumentos científicos
  • Radiación electromagnética
  • Teledetección
  • Cartografía
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