烟羽辐射模拟装置的研制及测试

Abstract

Abstract: The response to small dose variation is an important performance indicator for environmental γ radiation monitor.This paper introduces a radioactive plume simulator and the test result for its radiation field dose rate. The components of this device include a ¹³⁷Cs source and its transport system, source shieldings, lead attenuators of different thickness, and a controller system. The air Kerma rate at 3 m from the radiation source and 1m above ground was obtained by MC simulation and G(E) function method, and the difference between two method is within 5%.This device can provide a radiation field over the range of 10 nGy/h—50 nGy/h, when loading the MBq grade ¹³⁷Cs radioactive source, can be used to testing the performance of response to small dose rate variation for environmental γ radiation monitor.

Key words: environmental γ radiation monitoring, radioactive plume simulator, small dose rate variation

CLC Number:

TL816+.2

Jin Chenghe, Wei Yingjing, Wang Yong, Huang Yawen, Feng Mei, Zhang Qingli. Development and Test of a Radioactive Plume Simulator[J].RADIATION PROTECTION, 2014, 34(4): 234-239.

References

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Development and Test of a Radioactive Plume Simulator

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