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  • Modelling and measurement of radon UWC ETD

    well as building materials [Nie96][Bos03]. Mine dumps, as explained in. Chapter 1 are tonnes of processed waste product from the mineral processing plants. Once the .. The analyses are done with a high energy resolution hyper pure germanium. (HPGe) detector. This same technique will also be used to determine the.

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  • Implementing Safeguardsbydesign at Natural Uranium Conversion

    Oct 3, 2012 6.1 GENERAL REQUIREMENTS (LIST OF SAFEGUARDS EQUIPMENT THAT MUST BE . HPGe high purity germanium . ores. Typically, yellowcakes are obtained through the milling and chemical processing of uranium ore forming a coarse powder which has a pungent odor, is insoluble in water and.

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  • Appliion of Germanium Detectors to Environmental Monitoring

    Minerals, and Industry Washington DC 20460 EPA 600 7 79 054 March 1979 Research and Development Appliion of Germanium Detectors to . when a given measurement process (i.e., detector and chemical procedure) is used, that will yield a net count for which there is confidence at a predetermined level that 

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  • Nuclear Engineering HSC Cores: Home

    activation analysis techniques (nondestructive technique to find a sample elemental composition). UNEF maintains a 7,500 sq ft nuclear engineering and radiochemistry facility, including a fully operable 100 kW TRIGA Mark1 nuclear reactor, 3 High Purity Germanium (HPGe) gamma detectors, liquid scintillation counting, 

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  • Detecting nuclear and radiological materials Royal Society

    Radiation attenuation due to shielding is an exponential process and so even moderate amounts of shielding . ORTEC Inc. has developed compact lowpower hyperpure germanium (HPGe) detector systems, which do .. this (generally more expensive) equipment universally at every border and port all of the time.

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  • Radiation protection concerning the use of INFN Ferrara

    different origins of the phosphate ores and/or to the chemical processing of the ore during fertilizers manufacturing. The The science of soil fertility and plant nutrition recognize the dominant coaxial highpurity germanium (HPGe) ptype detectors with a 60 % relative efficiency, having an energy resolution of. 1.9 keV at 

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  • Material Screening by means of Lowlevel Gamma Ray

    Lowlevel Gamma Ray Spectrometry with the Dortmund Low Background. HPGe Facility. Dissertation zur Erlangung des akademischen Grades eines Doktors der .. act production process and radionuclide content in the mined ore. . shielding is constructed in such a way that the germanium detector can even be.

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  • HPGe Detectors & Spectrometers BSI.LV

    The Automated Spectrometer is intended for the detection and analysis of radio nuclides from various types of environmental objects such as rocks, minerals, on HPGe detector in Ustyle cryostat with remote preamplifier (PA) and 30L Dewar vessel Lead shield Multichannel analyzer Software for spectra processing, 

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  • Material Screening by means of Lowlevel Gamma Ray

    Lowlevel Gamma Ray Spectrometry with the Dortmund Low Background. HPGe Facility. Dissertation zur Erlangung des akademischen Grades eines Doktors der .. Since effects like weak electrical fields in some regions of the germanium detec .. act production process and radionuclide content in the mined ore.

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  • Analytical Methodology for the Determination of IAEA Publiions

    of plants, animals and animal products which may include several radionuclides [8]. Radium isotopes are NORM material [9]: phosphate industry, mining and processing of metal ores, tin, niobium, aluminium, iron . many potentially useful emission lines, the relatively poor efficiency of the High Purity Germanium (HPGe) 

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  • Radiation protection concerning the use of INFN Ferrara

    different origins of the phosphate ores and/or to the chemical processing of the ore during fertilizers manufacturing. The The science of soil fertility and plant nutrition recognize the dominant coaxial highpurity germanium (HPGe) ptype detectors with a 60 % relative efficiency, having an energy resolution of. 1.9 keV at 

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  • assessment of public exposure to naturally occurring radioactive

    RADIOACTIVE MATERIALS FROM MINING AND MINERAL PROCESSING. ACTIVITIES OF TARKWA GOLDMINE IN of the public to NORM from processing of gold ore at the Tarkwa Goldmine in Ghana. Direct gamma spectrometry and neutron .. HPGE High purity germanium. BEIR Biological effects of ionising 

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  • Model of a Generic Natural Uranium Conversion Plant INFO

    This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States. Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or.

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  • zone refining process: Topics by Science.gov

    Germanium zone refining is one of the most important techniques used to produce high purity germanium (HPGe) single crystals for the fabriion of nuclear radiation .. It discusses the worldwide Construction Survey, U.S. Refining Survey, Worldwide Gas Processing Plant Survey, Worldwide Refining Survey, Worldwide 

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  • Germanium: Environmental occurrence, importance and speciation

    Dec 19, 2017 occur as hydroxide species. 3 Geochemical occurrence and production of Ge. 3.1 Germanium geochemistry. Germanium (Ge) is a scarce, but not an extremely. rare element in the Earth's crust (about 1.6 ppm Ge. crustal average). Ge is mainly associated with. minerals or ores containing Si, C, Zn, Cu, Fe, 

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  • View/Open UGSpace University of Ghana

    hereditary nominal risk coefficient and. HPGe. High Purity Germanium Detector. I1. Activity of radon at t1. I2. Activity of radon at secular equilibrium. IAEA. International Atomic Energy Agency. ICRP .. sources and reserves, its nature of radioactivity, the mineral processing of tantalum mine and the NORMs associated with 

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  • Material Screening by means of Lowlevel Gamma Ray Eldorado

    Lowlevel Gamma Ray Spectrometry with the Dortmund Low Background. HPGe Facility. Dissertation zur Erlangung des akademischen Grades eines Doktors der .. Since effects like weak electrical fields in some regions of the germanium detec .. act production process and radionuclide content in the mined ore.

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  • HPGe Defense Technical Information Center

    GERMANIUM (HPGe) AND MERCURIC IODIDE (HgI2) GAMMA DETECTORS. THESIS. Michael B. Nelson Natural uranium ore spectra comparison of a 10hour (live time) EMC HPGe spectrum and a 12hour .. The Compton ster process is a result of an incident gamma elastically stering off an electron. Energy 

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  • Technical Report European Commission

    Jul 5, 2011 6.3.4 Chemical Processing Plant . . HPGe. High Purity Germanium (gamma radiation detector device). IAEA. International Atomic Energy Agency. ICRP. International Commission on Radiological time, activities which were not directly related to uranium ore mining and processing were privatized.

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  • LowBackground gamma counting at the Kimballton Underground

    Feb 4, 2011 The facility consists of two commercial lowbackground high purity germanium (HPGe) detectors. . This process is complied and time con . ore [21]. For lead samples, 210Pb (T1/2 = 22.3 · y), activ ity was measured separately since it is not expected to be in equilibrium with the rest of the 238U chain.

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  • LowBackground gamma counting at the Kimballton Underground

    Feb 4, 2011 The facility consists of two commercial lowbackground high purity germanium (HPGe) detectors. . This process is complied and time con . ore [21]. For lead samples, 210Pb (T1/2 = 22.3 · y), activ ity was measured separately since it is not expected to be in equilibrium with the rest of the 238U chain.

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  • PDF alogue Baltic Scientific Instruments

    also offering service and repair of HPGe, Sili and CZT detection units and electronics produced by. BSI and other manufacturers. production of the spectrometric devices based on silicon, highpure germanium and ecology, geology and mineral resource industry, medicine and research activities, customs control and 

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  • Optimization and Implementation of lowbackground NUS Physics

    Abstract. We are interested in the ability of the highpurity Germanium (HPGe) de . plant in place of other minerals such as potassium. The highest . 2.1.3 Pair Production. In pair production, an incoming photon interacts with an atom to create an electronpositron pair. The energy for this process is given by. Eγ = T+ + 

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  • Minerals Free FullText Natural Radioactivity of Intrusive MDPI

    Dec 29, 2017 Prospecting and exploration of nuclear minerals in Serbia, at different levels of detail, encompassed large areas. .. The activity of the samples was measured using a highresolution coaxial semiconductor detector with highpurity germanium crystal HPGe ORTEC GEM 50 and 50% relative efficiency at 

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  • Model of a Generic Natural Uranium Conversion Plant INFO

    GCEP gaseous centrifugal enrichment process. GDEP gaseous diffusion enrichment process. HF hydrogen fluoride. HPGe highpurity germanium. IAEA . uraniumcontaining ores. Regardless of its . Again, because the aqueous stream containing uranium has nitric acid, the equipment used in purifiion must be 

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  • HPGe Detectors & Spectrometers BSI.LV

    The Automated Spectrometer is intended for the detection and analysis of radio nuclides from various types of environmental objects such as rocks, minerals, on HPGe detector in Ustyle cryostat with remote preamplifier (PA) and 30L Dewar vessel Lead shield Multichannel analyzer Software for spectra processing, 

    Online
  • Implementing Safeguardsbydesign at Natural Uranium Conversion

    Oct 3, 2012 6.1 GENERAL REQUIREMENTS (LIST OF SAFEGUARDS EQUIPMENT THAT MUST BE . HPGe high purity germanium . ores. Typically, yellowcakes are obtained through the milling and chemical processing of uranium ore forming a coarse powder which has a pungent odor, is insoluble in water and.

    Online
  • akyem gold mine UGSpace University of Ghana

    Openpit mining and ore processing at Akyem. .. HPGe. High Purity Germanium detector. Inh. Inhalation. Ing. Ingestion. J/Kg. Joule per kilogram. K40. Potassium40. KBq/m. 3. Kilobecquerel per cubic meter. IAEA. International Gammaray spectra are measured with modular equipment consisting of a detector, an.

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  • Measurement of 238U and 232Th radionuclides in IOPscience

    Introduction. Tor Minerals International, was founded by Benelite Corporation of America in 1973. IBenelite Process" was developed by Benelite and patented for producing synthetic Silva MultiNavigator equipment. 2.3. measured using a gamma spectrometry system with a HighPurity Germanium (HPGe) detector and.

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  • Study of radioactive contamination in silts and aerosols at Aldama

    Mar 24, 2015 The concentration of PM10 measured by the equipment loed at the Mexican Uranium plant (URAMEX, initials in Spanish) that was processing radioactive ores exceeded the standard values in February and March, when the air velocity increases. At City Hall, the concentration of PM10 surpassed the 

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