An approach to evaluate the efficiency of γ-ray detectors to determine the radioactivity in environmental samples

Mohamed. S. Badawi; Ahmed. M. El-Khatib; Samah. M. Diab; Sherif. S. Nafee; Ekram. A. El-Mallah

doi:10.1088/1674-1137/38/6/066203

Chinese Physics C> 2014, Vol. 38> Issue(6) : 066203 DOI: 10.1088/1674-1137/38/6/066203

An approach to evaluate the efficiency of γ-ray detectors to determine the radioactivity in environmental samples

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Abstract：
This work provides an approach to determine the efficiency of γ-ray detectors with a good accuracy in order to determine the concentrations of either naturally occurring or artificially prepared radionuclides. This approach is based on the efficiency transfer formula (ET), the effective solid angles, the self- absorptions of the source matrix, the attenuation by the source container and the detector housing materials on the detector efficiency. The experimental calibration process was done using radioactive (Cylindrical & Marinelli) sources, in different dimensions, that contain aqueous ¹⁵²Eu radionuclide. The comparison point to a fine agreement between the experimental measured and calculated efficiencies for the (NaI & HPGe) detectors using volumetric radioactive sources.

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Mohamed. S. Badawi, Ahmed. M. El-Khatib, Samah. M. Diab, Sherif. S. Nafee and Ekram. A. El-Mallah. An approach to evaluate the efficiency of γ-ray detectors to determine the radioactivity in environmental samples[J]. Chinese Physics C, 2014, 38(6): 066203. doi: 10.1088/1674-1137/38/6/066203

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Received: 2013-07-30
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

An approach to evaluate the efficiency of γ-ray detectors to determine the radioactivity in environmental samples

Corresponding author: Mohamed. S. Badawi,

Received Date: 2013-07-30

Accepted Date: 1900-01-01

Available Online: 2014-06-05

Abstract: This work provides an approach to determine the efficiency of γ-ray detectors with a good accuracy in order to determine the concentrations of either naturally occurring or artificially prepared radionuclides. This approach is based on the efficiency transfer formula (ET), the effective solid angles, the self- absorptions of the source matrix, the attenuation by the source container and the detector housing materials on the detector efficiency. The experimental calibration process was done using radioactive (Cylindrical & Marinelli) sources, in different dimensions, that contain aqueous ¹⁵²Eu radionuclide. The comparison point to a fine agreement between the experimental measured and calculated efficiencies for the (NaI & HPGe) detectors using volumetric radioactive sources.

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An approach to evaluate the efficiency of γ-ray detectors to determine the radioactivity in environmental samples

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