Measurement of Linear-attenuation Coefficient of Body Source Using Non-collimated Point Source Transmission Approach

被引：0

作者：

Kadier A. ^{[1
,2
]}

Zhang L. ^{[3
]}

Le F. ^{[2
]}

Kang R. ^{[2
]}

Silafuli T. ^{[2
]}

Guo Q. ^{[1
]}

机构：

[1] State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing

[2] Xinjiang Uygur Autonomous Region Research Institute of Measurement and Testing, Urumqi

[3] State Key Laboratory of NBC Protection for Civilian, Beijing

来源：

Yuanzineng Kexue Jishu/Atomic Energy Science and Technology | 2020年 / 54卷 / 06期

关键词：

Body source; Linear-attenuation coefficient; Non-collimated point source; Transmission method; γ-spectrometry;

D O I：

10.7538/yzk.2019.youxian.0376

中图分类号：

TH13 [机械零件及传动装置];

学科分类号：

080203 ;

摘要：

Linear-attenuation coefficient of body source is an important parameter for the calculation of the self-absorption correction factor. In this work, the non-collimated point source transmission method was introduced for the determination of the linear-attenuation coefficient of unknown body source. The point source was directly placed atop, or at certain distance above the source container. By the comparison of the simulated transmission ratio with the experimental results, the linear-attenuation coefficient of this body source was deduced. The principle and calculation process were presented in detail in the text. To test this method, five different substances with different densities were chosen as test subjects, and non-collimated transmission experiments were conducted using three different point sources. It shows that the experimental results of this method agree well with the theoretical values given by the XCOM platform, and this method can provide the linear-attenuation coefficients of body sources conveniently. This method avoids the need for collimator, and limitations posed by size and shape of detector and sample. It is simple and easy to be used in laboratories. © 2020, Editorial Board of Atomic Energy Science and Technology. All right reserved.

引用

页码：1140 / 1147

页数：7

共 15 条

[1]

GILMORE G R., Practical gamma-ray spectrometry, (2008)

[2]

KAHATER A E M, EBAID Y Y., A simplified gamma-ray self-attenuation correction in bulk samples, Applied Radiation and Isotopes, 66, pp. 407-413, (2008)

[3]

CUTSHALL N H, LARSEN I L, OLSEN C R., Direct analysis of <sup>210</sup>Pb in sediment samples: Self-absorption corrections, Nuclear Instruments and Methods in Physics Research, 206, 1, pp. 309-312, (1983)

[4]

HE Zonghui, Calclation and experiment determination of self absorption factors of environment samples by Monte Carlo method, Radiation Protection, 10, 5, pp. 351-363, (1990)

[5]

YANG Litao, CHEN Chaofeng, JIN Xiaoxiang, Et al., Research on accurate calculation method of γ-ray self-absorption correction factor, Atomic Energy Science and Technology, 51, 2, pp. 323-329, (2017)

[6]

TIAN Zining, JIA Mingyan, LI Huibin, Et al., Research on self-absorption corrections for laboratory γ spectral analysis of soil samples, Radiation Protection, 20, 1, pp. 54-62, (2010)

[7]

ZHENG Honglong, TUO Xianguo, SHI Rui, Et al., Monte Carlo simulations of gamma ray linear attenuation coefficient function and determination of its parameters, Nuclear Techniques, 40, 3, pp. 16-22, (2017)

[8]

JODLOWSKI P., Self-absorption correction in gamma-ray spectrometry of environmental samples: An overview of methods and correction values obtained for the selected geometries, Nukleonika

[9]

BARRERA M, RAMOS-LERATE I, LIGERO R A, Et al., Optimization of sample height in cylindrical geometry for gamma spectrometry measurements, Nuclear Instruments and Methods in Physics Research, 421, 1-2, pp. 163-175, (1999)

[10]

BARRERA M, SUAREZ-LLORENS A, CASAS-RUIZ M, Et al., Theoretical determination of gamma spectrometry systems efficiency based on probability functions: Application to self-attenuation correction factors, Nuclear Instrument and Methods in Physics Research A, 854, pp. 31-39, (2017)

← 1 2 →