Application of a new <i>in situ</i> calibration technique for gamma spectrometry and comparison of <i>in situ</i> and laboratory measurements

Rašeta, Davor; Petrinec, Branko; Babić, Dinko; Šoštarić, Marko

doi:10.2478/aiht-2021-72-3468

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…For that reason, pre-knowledge of the incident radiation source is recommended. Usually, the high purity germanium (HPGe) detectors are the most famous spectrometer for gamma ray-spectrometry [3][4][5][6]. It is due to the strong resolving power, very close to the Fano limit [7], that is very suitable as a detection system for the spectra analysis.…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo simulation of NaI(Tl) detector and GRAVEL deconvolution for biological, geological samples and their dosimetry evaluation

2021

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A new approach for natural radioactivity evaluation in environmental samples was presented. The method was based on the combination of GRAVEL unfolding code and Monte Carlo simulation. The NaI(Tl) detector model was validated by comparing the simulated data with the experiment using a calibration point source. Then, the response matrixes at 1.46 and 1.76 MeV corresponding to 40K and 238U respectively, was used to restore the incident γ spectra. The measured activities were used to estimate the biological activities and the annual absorbed doses. The annual absorbed doses are lower than the worldwide reference value of 1 mSv·y-1.

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Section: Introductionmentioning

confidence: 99%

Monte Carlo simulation of NaI(Tl) detector and GRAVEL deconvolution for biological, geological samples and their dosimetry evaluation

2021

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In-situ γ-ray analysis of ground surface radioactivity using portable HPGe γ spectrometer

Wu¹,

Wang²,

Sun³

et al. 2022

Sci Rep

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As essential high-end equipment for nuclear emergency monitoring, the portable HPGe γ spectrometer currently lacks supporting in-situ measurement methods, limiting its role and value in emergency missions. For this practical problem, this paper studies the measurement of ground surface radioactivity by portable HPGe γ spectrometer in nuclear emergency monitoring in view of the particularity of nuclear emergency source items. Firstly, the detection efficiency of point sources at different horizontal distances when the spectrometer is installed at the height of 1 m from the center of the detector to the ground is calculated. Secondly, the concept of effective contribution distance is defined and analyzed. Thirdly, the point source detection efficiency is obtained using the numerical integration method of calculation. Integrate to calculate the detection efficiency of the surface source, and then calculate the radioactive surface activity of the surface. Finally, the effectiveness of the method is verified through experiments.

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Application of a new in situ calibration technique for gamma spectrometry and comparison of in situ and laboratory measurements

Cited by 2 publications

References 11 publications

Monte Carlo simulation of NaI(Tl) detector and GRAVEL deconvolution for biological, geological samples and their dosimetry evaluation

Monte Carlo simulation of NaI(Tl) detector and GRAVEL deconvolution for biological, geological samples and their dosimetry evaluation

In-situ γ-ray analysis of ground surface radioactivity using portable HPGe γ spectrometer

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