نتایج جستجو برای: nai tl detectors
تعداد نتایج: 42389 فیلتر نتایج به سال:
Spectral unmixing applied to fast identification of γ-emitting radionuclides using NaI(Tl) detectors
Natural radionuclides present in soil as well as certain anthropogenic radionuclides released to the environment are the major contributors to terrestrial outdoor exposures. In the assessment of human exposures from environmental radioactivity, besides the conventional method of soil and vegetation sampling combined with laboratory based analyses of environmental media, the other choice would b...
The Comprehensive Nuclear-Test-Ban Treaty establishes a network of monitoring stations to detect radioactive xenon in the atmosphere from nuclear weapons testing. One such monitoring system is the Automated Radioxenon Sampler/Analyzer (ARSA) developed at Pacific Northwest National Laboratory, which uses a complex arrangement of separate beta and gamma detectors to detect beta-gamma coincidences...
This paper concerns the application of gamma radiation absorption method in measurements dispersed phase velocity two-phase flows: liquid–gas flow a horizontal pipeline and liquid–solid particles vertical pipe. Radiometric sets containing two linear 241Am sources NaI(Tl) scintillation detectors were used research. Due to stochastic nature signals obtained from probes, statistical methods for th...
A search of neutrino magnetic moment was carried out at the Kuo-Sheng Nuclear Power Station at a distance of 28 m from the 2.9 GW reactor core. With a high purity germanium detector of mass 1.06 kg surrounded by scintillating NaI(Tl) and CsI(Tl) crystals as anti-Compton detectors, a detection threshold of 5 keV and a background level of 1 kg(-1) keV(-1) day(-1) at 12-60 keV were achieved. Based...
Introduction: Acquiring a high quality image has assigned an important concern for obtaining accurate diagnosis in nuclear medicine. Detector and collimator are critical component of Single Photon Emission Computed Tomography (SPECT) imaging system for giving accurate information from exact pattern of radionuclide distribution in the target organ. The images are strongly affect...
Absolute 108Agm characterization based on gamma-gamma coincident detection by two NaI(Tl) detectors.
A two-dimensional analysis of three coincident gamma-rays in (108)Ag(m) decay, detected by two NaI(Tl) scintillation detectors, allows a direct measurement of the source activity. A modification of the Eldridge-Crowther formulas derived originally for (125)I was done recently for the case of two coincident gamma-rays in (60)Co decay (Volkovitsky and Naudus, 2009). A similar approach is applied ...
COSINE-200 is the next phase experiment of ongoing COSINE-100 that aims to unambiguously verify annual modulation signals observed by DAMA and reach world competitive sensitivity on low-mass dark matter search. To achieve physics goal COSINE-200, successful production low-background NaI(Tl) detectors crucial it must begin from mass ultra-low background NaI powder. A clean facility for mass-prod...
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