کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1739119 | 1016834 | 2008 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A new method for the determination of geophysical parameters by radon concentration measurements in bore-hole A new method for the determination of geophysical parameters by radon concentration measurements in bore-hole](/preview/png/1739119.png)
We propose a new method to measure the 222Rn concentration in a closed bore-hole and to use the results for estimation of the diffusion parameter and the average radium content of the surrounding geological formations. In a closed bore-hole, only several meters from the surface, the radon concentration is rather constant (in the ±15% range) under different meteorological conditions. The inflow of radon gas, after removing the radon from the bore-hole by dry nitrogen, shows characteristic time-dependence, which is determined by the diffusion parameter for radon in the surrounding environment. The experimental data were well described by a straightforward model calculation. From the results estimate can be given for the diffusion parameter and for the average radium content of the surrounding geological formation.
Journal: Journal of Environmental Radioactivity - Volume 99, Issue 11, November 2008, Pages 1731–1735