Chinese Physics C > 2014, Vol. 38 > Issue(7): 076002 DOI: 10.1088/1674-1137/38/7/076002

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

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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 μin the ranges of 0 to 0.5 cm ^-1and 0.5 cm ^-1to 2.0 cm ^-1, indicating that the semi-empirical formula will not be used when μhas 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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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

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Received: 2013-08-16
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

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

Corresponding author:OUYANG Xiao-Ping,

Received Date:2013-08-16

Accepted Date:1900-01-01

Available Online:2014-07-05

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 formulaF(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 forμin the ranges of 0 to 0.5 cm^-1and 0.5 cm^-1to 2.0 cm^-1, indicating that the semi-empirical formula will not be used whenμhas 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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Self-attenuation corrections calculated by LabSOCS Simulations for gamma-spectrometric measurements with HPGe detectors

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