학술논문
Improved measurements of thoron (220 Rn) in natural waters.
Document Type
Article
Author
Source
Subject
*RADIATION measurements
*THORON
*WATER chemistry
*RADIOCHEMICAL analysis
*RADON
*NUCLEAR counters
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Language
ISSN
0236-5731
Abstract
Thoron (220Rn) in water measurements can be useful for prospecting for points of submarine groundwater discharge into surface waters. With a 56 s half-life any detection of thoron must mean that one is close to a source. To improve measurement sensitivity, the influence of airflow rates on both radon and thoron measurements have been investigated using a RAD7 detector. Based on lab experiments, 2.5 L min−1 represents an optimum airflow rate for measuring both radon and thoron. Field data from a coastal zone demonstrates that use of an external air pump produced a thoron response 65% higher than a standard setup. [ABSTRACT FROM AUTHOR]