A theoretical and experimental research on detection efficiency of HPGe detector for disc source with heterogeneous distribution

Tian, Zining; Ouyang, Xiaoping; Liu, Linyue; Ruan, Jinlu; Liu, Jinliang

doi:10.1007/s10967-014-3907-2

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…The ex per i men tal rou tine cal i bra tion pro cess can be a more au thor i ta tive method for the ma jor ity of the de tec tors un der their nor mal condi tions, but these de tec tors have to be recalibrated again for each sam ple con fig u ra tion dif fer ent from the used stan dard cal i bra tion source struc ture. Sev eral stud ies were done on the cal i bra tion pro cess for dif fer ent gamma-ray de tec tors with dif fer ent geo met ri cal ra dioac tive sources [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Analytical computation technique for calculation the effective geometrical solid angle and the efficiency of cubic scintillation crystal with side cylindrical hole

Badawi

Thabet

2022

NUCL TECH RAD PROT

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In the gamma-ray spectroscopy field, the radiometric examination for small quantities of natural samples is extremely significant. Therefore, the gamma-ray spectrometry calibration process must be prepared with good precision for several energies, matrices of sources or samples, and source-to-detector shapes. This manuscript considers a new uncomplicated analytical computation technique to calculate the effective geometrical solid angle and the efficiency of cubic scintillation crystal with a side cylindrical hole. The computations can be done by using a simple method, with a few essential limitations, that describes radioactive point sources located inside the side cylindrical hole and a high-efficiency cubic NaI(Tl) detector, come together with a low background as well. The technique stands on a trouble-free solid angle analytical formula for the detection system, using an accurate relation for the detector cavity, united with rough formulas controlling the interactions in the gamma-ray source and the materials introduced in between the source and the gamma-ray spectrometry. This new technique is not restricted to certain sources, because several source shapes can correspond to a homogeneous huge number of point sources and the detector geometry can be represented as a set of border points. The technique simply can be useful to obtain the full-energy peak efficiency in the future, challenging developments for low-energy gamma-ray spectroscopy.

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Section: Introductionmentioning

confidence: 99%

Analytical computation technique for calculation the effective geometrical solid angle and the efficiency of cubic scintillation crystal with side cylindrical hole

Badawi

Thabet

2022

NUCL TECH RAD PROT

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“…The Chernobyl particles can be mono-elemental, bi-elemental, or fuel fragments [13], whereas Fukushima particles contain predominately 137 Cs, referred to as Cs microparticles [12]. Hot particles can have diameters from a fraction of a micrometer to over 100 μm [14] and their size distribution is often assumed as lognormal [15] or arbitrary [16].…”

Section: Introductionmentioning

confidence: 99%

Monte Carlo Simulation Study of Hot-Particle Detection in Voluminous Samples by Gamma Spectrometry

Chu¹,

Burn²,

Bradt³

et al. 2021

JAMP

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In this work, we addressed the inhomogeneity problem in gamma spectrometry caused by hot particles, which are dispersed into environment from large nuclear reactor accidents such as at Chernobyl and Fukushima. Using Monte Carlo simulation, we have determined the response of a gamma spectrometer to individual and grouped hot particles randomly distributed in a soil matrix of 1-L and 0.6-L sample containers. By exploring the fact that the peak-to-total ratio of efficiencies in gamma spectrometry is an empirical parameter, we derived and verified a power-law relationship between the peak efficiency and peak-to-total ratio. This enabled creation of a novel calibration model which was demonstrated to reduce the bias range and bias standard deviation, caused by measuring hot particles, by several times, as compared with the homogeneous calibration. The new model is independent of the number, location, and distribution of hot particles in the samples. In this work, we demonstrated successful performance of the model for a single-peak 137 Cs radionuclide. An extension to multi-peak radionuclide was also derived.

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Virtual point source efficiency calibration method for voluminous sample of radio-xenon based on efficiency function of point source

Tian¹,

Ouyang

et al. 2015

J Radioanal Nucl Chem

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A theoretical and experimental research on detection efficiency of HPGe detector for disc source with heterogeneous distribution

Cited by 3 publications

References 15 publications

Analytical computation technique for calculation the effective geometrical solid angle and the efficiency of cubic scintillation crystal with side cylindrical hole

Analytical computation technique for calculation the effective geometrical solid angle and the efficiency of cubic scintillation crystal with side cylindrical hole

Monte Carlo Simulation Study of Hot-Particle Detection in Voluminous Samples by Gamma Spectrometry

Virtual point source efficiency calibration method for voluminous sample of radio-xenon based on efficiency function of point source

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