Self-attenuation corrections calculated by LabSOCS Simulations for gamma-spectrometric measurements with HPGe detectors

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TIAN Zi-Ning, OUYANG Xiao-Ping, LIU Yang, CHEN Liang, LIU Jin-Liang, ZHANG Xian-Peng, SONG Ji-Wen and ZENG Ming. Self-attenuation corrections calculated by LabSOCS Simulations for gamma-spectrometric measurements with HPGe detectors[J]. Chinese Physics C, 2014, 38(7): 076002. doi: 10.1088/1674-1137/38/7/076002
TIAN Zi-Ning, OUYANG Xiao-Ping, LIU Yang, CHEN Liang, LIU Jin-Liang, ZHANG Xian-Peng, SONG Ji-Wen and ZENG Ming. Self-attenuation corrections calculated by LabSOCS Simulations for gamma-spectrometric measurements with HPGe detectors[J]. Chinese Physics C, 2014, 38(7): 076002.  doi: 10.1088/1674-1137/38/7/076002 shu
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Received: 2013-08-16
Revised: 1900-01-01
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Self-attenuation corrections calculated by LabSOCS Simulations for gamma-spectrometric measurements with HPGe detectors

    Corresponding author: OUYANG Xiao-Ping,

Abstract: Simulations from Laboratory Sourceless Object Counting System (LabSOCS) software were used to determine self-attenuation correction factor, which is defined as the efficiency ratio of the sample with the absorbing medium to that of the sample without absorbing medium. The semi-empirical self-attenuation correction formula F(μ) used to correct self-attenuation of a sample was applied. A comparison of the two methods reveals that formula of sample with φ 75 mm× 25 mm and φ75 mm× 10 mm can be, respectively, used in the self-attenuation correction for μ in the ranges of 0 to 0.5 cm-1 and 0.5 cm-1 to 2.0 cm-1, indicating that the semi-empirical formula will not be used when μ has exceeded the interval. The semi-empirical formula value is consistent with the experimental value, within 7.9% accuracy. Therefore, this method is correct and effective. Both of our two methods can accurately produce a relative self-attenuation correction factor when the composition of the sample is known. The self-attenuation correction of a sample with unknown composition can only be carried out using a semi-empirical formula method.

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