利用手持式γ核素识别仪快速检测石材中γ放射性核素含量

doi:10.3969/j.issn.1000-1158.2019.03.29

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Abstract A rapid measurement method using a handheld gamma radionuclide recogniser to rapidly measure the content of natural radionuclides in stone was proposed. The reference values of the calibration coefficients of 226Ra, 232Th and 40K in the handheld radionuclide recogniser were determined by means of the energy spectrum analysis method of the low background HPGe γ spectrometer. Then the radionuclide gamma spectrum in the stone was measured by the handheld radioisotope identification device (RID). The specific activity of 226Ra, 232Th and 40K in stone was estimated according to the calibration coefficient. The results showed that the maximum deviations between the proposed method and the low background HPGe gamma spectrometer were 25.1%(CRa), -27.2%(CTh), -15.2%(CK) respectively. The proposed method can be applied to the rapid and nondestructive detection of specific activity of gamma radiation in stone samples and the rapid estimation of external radiation dose caused by decorative stone.

Key words： metrology hand-held RID stone material radioactive content gamma spectrometer

Received: 11 October 2018 Published: 19 April 2019

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TB98

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	Articles by authors
	LU Xiao-jun
	HE Lin-feng
	XIN Zhi-wei

Cite this article:

LU Xiao-jun,HE Lin-feng,XIN Zhi-wei. Rapid Detection of Radioactive Content in Stone by Hand-held γ Radioisotope Identification Device[J]. Acta Metrologica Sinica, 2019, 40(3): 526-529.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2019.03.29 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2019/V40/I3/526

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