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	Possibility of rapidly reporting /sup 226/Ra activity in /sup 226/Ra-/sup 222/Rn samples with unknown equilibrium factor by gamma spectrometer
	Su Qiong ; Zheng Rui ; Chen Yong ; Cheng Jian-Ping
	2010-05-06 ; 2010-05-06
关键词	Experimental/ gamma-ray spectrometers radioactivity measurement radium radon/ /sup 226/Ra activity gamma spectrometer /sup 226/Ra-/sup 222/Rn equilibrium factors sealing time soil raw coal mineral water cement rock preequilibrium time preequilibrium factor spectrometer detection lower limit 3 to 7 day/ A2970 Radiation measurement, detection and counting A2930K X- and gamma-ray spectroscopy A0785 X-ray, gamma-ray instruments and techniques B7420 Particle and radiation detection and measurement B7450 X-ray and gamma-ray equipment/ time 2.6E+05 to 6.0E+05 s
中文摘要	This paper reports the observed changes for equilibrium factors between /sup 226/Ra and /sup 222/Rn with sealing time of the samples. The samples include soil, raw coal, mineral water, cement, rock, etc. Especially the conceptions of "pre-equilibrium time" and "pre-equilibrium factor" have been put forward and methods of measuring and processing data have been given which can be used for rapidly reporting activity of /sup 226/Ra in samples with unknown equilibrium factor. It is definitely concluded that, using methods given in the paper, a test report will be completed in 3-7 days, instead of one month, after receiving the sample whose activity is not lower than LLD of the spectrometer.
语种	英语 ; 英语
出版者	Science Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/10901]
专题	清华大学
推荐引用方式 GB/T 7714	Su Qiong,Zheng Rui,Chen Yong,et al. Possibility of rapidly reporting /sup 226/Ra activity in /sup 226/Ra-/sup 222/Rn samples with unknown equilibrium factor by gamma spectrometer[J],2010, 2010.
APA	Su Qiong,Zheng Rui,Chen Yong,&Cheng Jian-Ping.(2010).Possibility of rapidly reporting /sup 226/Ra activity in /sup 226/Ra-/sup 222/Rn samples with unknown equilibrium factor by gamma spectrometer..
MLA	Su Qiong,et al."Possibility of rapidly reporting /sup 226/Ra activity in /sup 226/Ra-/sup 222/Rn samples with unknown equilibrium factor by gamma spectrometer".(2010).

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