Experimental determination of the HPGe spectrometer efficiency curve

Vukanac, Ivana; Djurašević, M.; Kandić, Aleksandar; Novković, D.; Nadjerdj, L.; Milošević, Zoran

doi:10.1016/j.apradiso.2008.02.039

Cited by 28 publications

(12 citation statements)

References 3 publications

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“…Energy and efficiency calibration were performed with soil and coal standards prepared with certified solution of mixed gamma-emitting radionuclides ( 241 Am, 109 Cd, 139 Ce, 57 Co, 60 Co, 137 Cs, 203 Hg, 113 Sn, 85 Sr, and 88 Y), purchased from the Czech Metrology Institute (CMI). Technique of standard preparation was described in previously published paper (26). Used radioactivity standards were of the adequate density and similar chemical composition.…”

Section: Gamma Ray Spectrometrymentioning

confidence: 99%

Physicochemical and radiological characterization of kaolin and its polymerization products

et al. 2018

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The aim of this study was determination of physical-chemical and radiological characteristics of kaolin and products of alkali-activated thermally treated kaolin (geopolymer). Also, the objective of presented research was to investigate the possibility of kaolin application as a pigment or as a raw material for obtaining geopolymer materials as a relatively new ones in a building material industry. Physicochemical characterization of one set of samples was conducted using X-ray diffraction (XRD), Fourier transform infra - red (FTIR) and X-ray photoelectron spectroscopy (XPS). Activity concentration of naturally occurring radionuclides in kaolin, metakaolin and geopolymer were determined. The absorbed dose rate (D) and the annual effective dose rate (EDR), calculated in accordance with the UNSCEAR 2000 report, are also presented in this paper. Kaolin was heat-treated on 750oC and specific activity of natural radionuclide in metakaolin increased up to 1.6, while measured specific activities in geopolymer were the lowest.

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Section: Gamma Ray Spectrometrymentioning

confidence: 99%

Physicochemical and radiological characterization of kaolin and its polymerization products

et al. 2018

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“…The calibration was performed in the 500 cm 3 Marinelli beaker geometry, too. For efficiency calibration of samples having different density compared to resin, two additional secondary reference materials were produced in accordance with IAEA recommendations [8]. These are charcoal and sand in Marinelli beaker, spiked with standard radioactive solution ER X 9031-OL-426/12 issued by Czech Metrological Institute, Inspectorate for Ionizing Radiation.…”

Section: Methodsmentioning

confidence: 99%

Measurement of radioactivity in building materials in Serbia

Pantelić

Todorović

Nikolić

et al. 2014

J Radioanal Nucl Chem

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This work presents a comprehensive study of natural radioactivity in 720 building materials imported in Serbia in 2012. Radioactivity concentrations of 226 Ra, 232 Th and 40 K in the studied samples range from \5 to 4,938, \3 to 763 and \10 to 3,192 Bq kg -1 , respectively. The maximum values of 226 Ra and 232 Th activity concentrations were found in zirconium mineral, while the highest 40 K activity concentration was in the feldspar. Based on the obtained radionuclide concentrations, radium equivalent activity, air absorbed dose rate, annual effective dose, external and internal hazard indices, gamma and alpha index due to radon inhalation were evaluated to assess the potential radiological hazard associated with these building materials.

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“…The energy range was from 58.91 keV to 1332.58 keV. After the peak detection efficiency values computed by a least square regression analysis, and then the fitted curve is plotted in scale of [5,6].…”

Section: Methodsmentioning

confidence: 99%

“…This is the parameter of most significance in practical γ-ray spectrometry. This determination according to the methodology worked out in the k 0 -instrumental neutron activation analysis (k 0 -INAA) method goes as follows [3][4][5][6]:…”

Section: Introductionmentioning

confidence: 99%