Development of a simple laboratory-made radioactive source to check the integrity of a gamma spectrometry system with HPGe detector

2013 ◽  
Vol 38 (2) ◽  
pp. 119-123
Author(s):  
Mo Sung Lee
Keyword(s):  
Gamma Spectrometry ◽  
Hpge Detector ◽  
Radioactive Source

scholarly journals Study on analyzing overlaped peaks using the Gold algorithm of unfolding

2016 ◽  
Vol 19 (2) ◽  
pp. 71-79
Author(s):  
Loan Thi Hong Truong ◽  
Hoa Phuc Long Cao ◽  
Phuong Dang Nguyen ◽  
My Thi Thao Dang ◽  
Huy Quang Ngo
Keyword(s):  
Gamma Spectrometry ◽  
Environmental Samples ◽  
Hpge Detector ◽  
Gamma Spectrum ◽  
Low Level ◽  
Continuum Region ◽  
Gamma Spectra

In this work, we initially applied the Gold unfolding algorithm to deconvolute continuum region in the gamma spectra and to analyze its overlaped peaks for the gamma spectrometry using HPGe detector. The results could be used to analyse overlaped peaks of low level gamma spectrum for environmental samples.

scholarly journals Identification of TENORM in Zirconium Oxychloride with Gamma Spectrometry

2021 ◽  
Vol 2 (1) ◽  
pp. 61-67
Author(s):  
Kharistya Rozana ◽  
Devi Swasti Prabasiwi ◽  
Dewi Puspa Ariany
Keyword(s):  
Radiation Exposure ◽  
Gamma Spectrometry ◽  
Hpge Detector ◽  
Acid Leaching ◽  
Zirconium Oxychloride ◽  
Environmental Radioactivity ◽  
Gamma Spectrometer ◽  
Activity Concentrations ◽  
Measured Activity ◽  
Job Safety

Abstract: Gamma spectrometer used to determine the type and activity of gamma emitting radionuclides, such as the measurement of TENORM (Th-232, U-238, Ra-26 dan K-40) in the zirconium oxychloride or environmental radioactivity.  This research was carried out to know each the TENORM on the zirconium oxychloride (ZrOCl2.8H2O) which accommodation of environment data the radioactivity in draft job safety about the workers.  Zirconium oxychloride is a result of chloride acid leaching process from sodium zirconate, containing uranium and thorium, so that it has the potential for contamination and increase the radiation exposure.  The instrument used for counting by HPGe detector and the spectrum were analyzed further using software Genie 2000.  Mean measured activity concentrations (radioactivity) of U-238, Th-232, Ra-226 and K-40 respectively were 13,43±0,876 Bq/kg, 12,040±1,483 Bq/kg, 11,400±0,582 Bq/kg dan 32,940±3,270 Bq/kg.

scholarly journals Precise determination of HPGe detector efficiency for gamma spectrometry measurements of environmental samples with variable geometry and density

Nukleonika ◽  
2017 ◽  
Vol 62 (1) ◽  
pp. 47-59 ◽  
Author(s):  
Manuel Barrera ◽  
Melquiades Casas-Ruiz ◽  
José J. Alonso ◽  
Juan Vidal
Keyword(s):  
Gamma Spectrometry ◽  
Environmental Samples ◽  
Hpge Detector ◽  
Attenuation Factor ◽  
Cylindrical Sample ◽  
Precise Determination ◽  
Energy Peak ◽  
Full Energy Peak Efficiency ◽  
Good Agreement

Abstract A methodology to determine the full energy peak efficiency (FEPE) for precise gamma spectrometry measurements of environmental samples with high-purity germanium (HPGe) detector, valid when this efficiency depends on the energy of the radiation E, the height of the cylindrical sample H, and its density ρ, is introduced. The methodology consists of an initial calibration as a function of E and H and the application of a self-attenuation factor, depending on the density of the sample ρ, in order to correct for the different attenuation of the generic sample in relation to the measured standard. The obtained efficiency can be used in the whole range of interest studied, E = 120–2000 keV, H = 1–5 cm, and ρ = 0.8–1.7 g/cm3, being its uncertainty below 5%. The efficiency has been checked by the measurement of standards, resulting in a good agreement between experimental and expected activities. The described methodology can be extended to similar situations when samples show geometric and compaction differences.

scholarly journals Radon indoor concentrations and activity of radionuclides in building materials in Serbia

2006 ◽  
Vol 4 (1) ◽  
pp. 11-20 ◽  
Author(s):  
Dragana Popovic ◽  
Dragana Todorovic
Keyword(s):  
Effective Dose ◽  
20Th Century ◽  
Gamma Spectrometry ◽  
Relative Efficiency ◽  
Hpge Detector ◽  
Building Materials ◽  
Public Institutions ◽  
Closed Space ◽  
Content Determination

The paper presents the results of radon indoor concentrations measurements in homes and public institutions (kindergardens) in Belgrade, as well as the results of the radionuclides content determination in building materials from Serbia, during the eighties and up to the mid-nineties of the 20th century. The activity of the radionuclides was determined on an HPGe detector (ORTEC relative efficiency 20%) by standard gamma spectrometry. Radon indoor concentrations on the grab samples of air were determined by alpha scintillation technique (Lucas scintilation cell with ZnS/Ag). Mean effective dose equivevalents of radon and its progenies in closed space were estimated at 0.074 mSv for radon and 1.22 mSv for its short-lived daughters, in total 1.3 mSv.

scholarly journals SELF-ABSORPTION CORRECTIONS BASED ON MONTE CARLO SIMULATIONS

2016 ◽  
Vol 4 ◽  
pp. 27
Author(s):  
Kamila Johnová
Keyword(s):  
Monte Carlo ◽  
Ionizing Radiation ◽  
Monte Carlo Simulations ◽  
Gamma Spectrometry ◽  
Hpge Detector ◽  
The Self

The main aim of this article is to demonstrate how Monte Carlo simulations are implemented in our gamma spectrometry laboratory at the Department of Dosimetry and Application of Ionizing Radiation in order to calculate the self-absorption within the samples. A model of real HPGe detector created for MCNP simulations is presented in this paper. All of the possible parameters, which may influence the self-absorption, are at first discussed theoretically and lately described using the calculated results.

Measurement of radon concentration in kindergartens and schools in Nis, Serbia

2019 ◽  
Vol 17 (2) ◽  
pp. 191-197
Author(s):  
Vesna Manic ◽  
Goran Manic ◽  
Branko Radojkovic ◽  
Dusica Vucic ◽  
Dragoslav Nikezic ◽  
...  
Keyword(s):  
Standard Deviation ◽  
Gamma Spectrometry ◽  
Radon Concentration ◽  
Hpge Detector ◽  
Activity Concentration ◽  
Average Value ◽  
Activity Concentrations ◽  
Log Normal ◽  
The Town ◽  
Log Normal Distribution

In this study, the activity concentration of radon, 222Rn, in kindergartens and schools in the town of Nis, Serbia, was explored. The method of active charcoal was applied. The measurements were carried out by gamma - spectrometry with HPGe detector. The results belong to the range of 15 Bq/m3 - 256 Bq/m3, with an average value of 59.7 Bq/m3 and a standard deviation of 25.3 Bq/m3. It was shown that data are distributed according to the log-normal distribution, and that is no correlation between indoor 222Rn concentrations and the activity concentrations of radium, 226Ra, in the soil.

Gamma spectrometry of iodine-125 produced in IEA-R1 nuclear reactor, using HPGe detector and fixation into epoxy matrix disc

2021 ◽  
Vol 169 ◽  
pp. 109568
Author(s):  
Osvaldo L. da Costa ◽  
Daiane C.B. de Souza ◽  
Fabio G. Castanho ◽  
Anselmo Feher ◽  
João A. Moura ◽  
...  
Keyword(s):  
Gamma Spectrometry ◽  
Epoxy Matrix ◽  
Hpge Detector ◽  
Nuclear Reactor ◽  
Iodine 125
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