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In-situ gamma spectrometry in environmental monitoring
Applied Radiation and Isotopes, 2010In-situ gamma spectrometry (scintillation or semiconductor) can be used effectively for monitoring natural and man-made radionuclide concentrations, together with the corresponding photon fields, in the environment and in workplaces. It is applied in operational and emergency monitoring of nuclear facilities, waste storage facilities and the uranium ...
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Traceability in gamma-ray spectrometry
Applied Radiation and Isotopes, 2010The new edition of the International vocabulary of metrology-basic and general concepts and associated terms (VIM) defines metrological traceability in a different way than was defined in the previous edition. The reference to an "unbroken chain of comparisons" is replaced by a "chain of calibrations." Calibrations, unlike comparisons, render possible ...
D, Glavic-Cindro, M, Korun
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Low level gamma spectrometry by beta–gamma coincidence
Applied Radiation and Isotopes, 2000A beta-gamma coincidence system consisting of a 2pi plastic beta detector and a Ge(Li) detector, is described. Such a system allows for a drastic reduction of background (approximately 70 times) as well as of Minimum Detectable Activity (approximately 7 times). An integral background (50-1500 keV) of less than 0.1 cps is obtained. The difficulty of the
, Luca, , De Felice P, , Tanase
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Ge(Li) gamma-ray spectrometry as a pilot for NaI(Tl) gamma-ray spectrometry
Talanta, 1968Lithium-drifted germanium semiconductor detectors give much better resolution than do thallium-activated sodium iodide detectors, but much lower sensitivity. They can often advantageously be used in conjunction with NaI(Tl) detectors, to show whether corrections must be applied for activities other than the one to be measured and to provide the ...
V P, Guinn, F M, Graber, D M, Fleishman
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AN IN SITU GAMMA-RAY SPECTROMETRY INTERCOMPARISON
Health Physics, 2003This paper provides the results of an in situ gamma-ray spectrometry intercomparison that was held from 18-21 October 1999, in Grand Junction, CO. This intercomparison was a collaborative effort between the U.S. Department of Energy's Environmental Measurements Laboratory and the U.S. Environmental Protection Agency's Office of Radiation and Indoor Air.
P, Shebell +11 more
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2004
The basic equipment for detection of prompt gamma rays is the gamma-ray spectrometer. The main component is the detector which converts the energy of the gamma ray to an electronic signal. This signal is amplified, shaped, digitized and stored in a histogram that makes up a spectrum of gamma peaks.
Tamás Belgya, Zsolt Révay
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The basic equipment for detection of prompt gamma rays is the gamma-ray spectrometer. The main component is the detector which converts the energy of the gamma ray to an electronic signal. This signal is amplified, shaped, digitized and stored in a histogram that makes up a spectrum of gamma peaks.
Tamás Belgya, Zsolt Révay
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Principles of UV–gamma coincidence spectrometry
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2012Abstract With conventional methods, samples containing alpha-particle-emitting nuclides are difficult to detect and characterize from distances greater than a few centimetres. One promising technique is to observe alpha particles indirectly by utilizing alpha-induced ultraviolet (UV) photons.
Sakari Ihantola +4 more
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Uncertainties in gamma-ray spectrometry
Metrologia, 2015High resolution gamma-ray spectrometry is a well-established metrological technique that can be applied to a large number of photon-emitting radionuclides, activity levels and sample shapes and compositions. Three kinds of quantitative information can be derived using this technique: detection efficiency calibration, radionuclide activity and photon ...
Lépy, M., Pearce, A, Sima, O.
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