<論文>地中ラドン濃度連続測定システムの開発と基礎データ

概要

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A real-time radon concentration monitoring system in under-ground soil was developed and tested. The system consists of a 19mm diameter, 1100mm long detector part and a microprocessor based data logger. A small volume chamber is installed at the tip of the detector part. In the chamber, a thin ZnS(Ag) scintillatior and a photomultiplier detect alpha particles from Rn-222 and its daughters. When the system is in measurement, detector part is buried into under-ground soil. Energy resolution for 5.5MeV alpha particles from Am-241 was 48% FWHM. Both rise time and fall time were measured to be approximately 1 hour from the response function test. From these results, it is confirmed that the developed system is useful for continuous measurements of radon concentration in under-ground soil.
神戸市立工業高等専門学校の論文
2000-03-01