X射线环境辐射监测仪器校准方法的研究

doi:10.3969/j.issn.1000-1158.2021.09.19

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Abstract As a measuring instrument for weak radioactivity monitoring, the traceability of the environmental monitoring is an urgent problem to be solved. Because the environmental radiation dose rate is low and the ionization signal is weak, it is usually measured by large volume ionization chamber or charging pressure ionization chamber. On the based of primary standards of 60~250kV X-ray air kerma and absolute measurement of the air kerma under the narrow spectrum series X-ray radiation quality, radiation environmental monitoring instruments were calibratied by successive substitution method. The uncertainty of measurement measurement result is better than 5.6%(k=2). It realize the traceability of environmental level X-ray air kerma measurement, and provide metrological support for the performance evaluation of environmental radiation monitoring instruments at low dose rate level.

Key words： metrology X-ray air kerma standard successive substitution method traceability

Received: 22 February 2021 Published: 24 September 2021

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TB98

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	Articles by authors
	SONG Fei
	ZHAO Rui
	DING Wei-cheng
	ZHANG De-liang
	YANG Yang
	WU Jin-jie

Cite this article:

SONG Fei,ZHAO Rui,DING Wei-cheng, et al. Research on Calibration Method of X-ray Environmental Radiation Monitoring Instrument[J]. Acta Metrologica Sinica, 2021, 42(9): 1237-1243.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2021.09.19 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2021/V42/I9/1237

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