A simple approach for developing model OF Si(Li) detector in Monte Carlo simulation

Chương, Huỳnh Đình; Linh, Nguyen Thi; Trang, Le Thi Ngoc; Nguyen, Vo Hoang; Minh, Le Hoang; Tai, Chau Thanh; Thanh, Tran Thien

doi:10.1016/j.radphyschem.2019.108459

Cited by 8 publications

(6 citation statements)

References 10 publications

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“…On the other hand, since the surveyed detector was manufactured in 2007, changing the dead layers' thicknesses due to aging was assumed as the cause of this deviation. This assumption is in accordance with [10][11][12][13][14]. Therefore, all other parameters were kept as fixed and the thicknesses of the front and rear dead layers were adjusted to reproduce the experimental efficiencies.…”

Section: Monte Carlo Simulationmentioning

confidence: 91%

“…Four energy peaks have been considered based on the data from table 2 (5.97, 14.41, 26.34, and 59.54 keV). The simulated efficiency for the photon energy of E is determined as follows [14]…”

Section: Monte Carlo Simulationmentioning

confidence: 99%

“…In recent years, the use of the Monte Carlo technique to simulate the efficiency of a detector in x-and γ-ray spectroscopy has become extensively popular [1][2][3][4][5][6][7][8][9]. However, some inconsistencies between the simulated and the experimental efficiencies have been reported in the literature [10][11][12][13][14], for many types of detectors. A potential explanation for this issue can be categorized as follows:…”

Section: Introductionmentioning

confidence: 99%

“…Another approach is the adjustment and optimization of some critical geometric parameters of the detector in a step-by-step procedure to reach a good agreement between simulated and experimental results [10,11,14]. As is known, the full energy peak efficiency depends on various components of the detector system.…”

Section: Introductionmentioning

confidence: 99%

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Determination of Si(Li) detector efficiency by experimental and Monte Carlo simulation methods

Zadehrafi¹,

Luca²,

Ioan³

2021

Phys. Scr.

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In this study, a Si(Li) detector was modeled by MCNP (Monte Carlo n-particle) code and its efficiency was estimated by Monte Carlo simulation in the photon energy range of 5.9–59.54 keV. Experimental measurements using 55Fe, 57Co, and 241Am radioactive standard sources were performed for validation of the applied simulation code. The primary results of the simulation were compared with the experimental ones and considerable discrepancies were observed, especially in the low energy region. Since the dead layers’ thicknesses are not always precisely provided by the manufacturer and even can change during detector aging, they were assumed as the cause of these discrepancies (front dead layer’s thickness being a critical parameter for low energy photons). After adjusting the thicknesses of the front and rear dead layers in a step-by-step procedure, a reasonable agreement was achieved between the simulated and experimental results. The results of this study indicate that if performing an experiment by the detector is difficult for any reason in some energies, one can rely on the MCNP code as an operational tool by interpolation or extrapolation of the available experimental efficiency data (in low energy region).

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Section: Monte Carlo Simulationmentioning

confidence: 91%

Section: Monte Carlo Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Determination of Si(Li) detector efficiency by experimental and Monte Carlo simulation methods

Zadehrafi¹,

Luca²,

Ioan³

2021

Phys. Scr.

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“…Từ đó, thông qua tiết diện tán xạ Rayleigh và tiết diện tán xạ Compton, thu được tỉ số R/C tương ứng với các biến về năng lượng E, góc tán xạ θ và bậc số nguyên tử Z theo công thức (3). Các nguồn đồng vị phóng xạ chuẩn phát gamma và tia X gồm 133 Ba, 137 Cs, 152 Eu, 154 Eu, 241 Am được sử dụng để xây dựng đường cong hiệu suất trong khoảng 12 -60 keV 13 . Các nguồn này có dạng đĩa với đường kính ngoài 25,4 mm và bề dày 6,35 mm.…”

Section: Tử (Không Gây Ion Hóa Hay Kích Thích Nguyên Tử) Tiết Diện Tá...unclassified

Preliminary Empirical study of the Rayleigh to Compton scattering ratio for elements at gamma energy 59.5 keV using Si(Li) detector

Thanh¹,

Phat²,

Minh³

et al. 2020

Sci. Tech. Dev. J. - Nat. Sci.

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The characteristic parameters of a material relation to photon interactions such as: mass attenuation coefficient, effective atomic number, effective electron density are required to provide essential data in diverse works such as nuclear diagnostic and cancer radiotherapy, industrial irradiation, radiation dosimetry, radiation protection and shielding, analyzing of the concentration of elements and radioactive isotopes. In this paper, the theoretical models such as non-relativistic form factor (NRFF), relativistic form factor (RFF), and modified form factor (MFF) were used to calculate the ratio Rayleigh-Compton for elements with at gamma energy 59.5 keV. The results showed that there was a discrepancy between the theoretical modes at a high atomic number. The mean value of the Rayleigh-Compton ratio depends on the atomic number, which shows the quadratic function of the correlation coefficient R2 = 0.996 as well. Besides, the experimental system was set-up and measured for some targets such as aluminum, copper, and lead at a scattering angle 150o using 241Am source by Si(Li) detector to confirm the theoretical values. The preliminary result showed that there was a good agreement with experimental and theoretical results is lower than 20%. Further investigation will be measured by the samples for more detailed evaluation.

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Optimization of p-type HPGe detector model using Monte Carlo simulation

Trang

Chương

Thanh

2020

J Radioanal Nucl Chem

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A simple approach for developing model OF Si(Li) detector in Monte Carlo simulation

Cited by 8 publications

References 10 publications

Determination of Si(Li) detector efficiency by experimental and Monte Carlo simulation methods

Determination of Si(Li) detector efficiency by experimental and Monte Carlo simulation methods

Preliminary Empirical study of the Rayleigh to Compton scattering ratio for elements at gamma energy 59.5 keV using Si(Li) detector

Optimization of p-type HPGe detector model using Monte Carlo simulation

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