Development of a continuous radon concentration monitoring system in underground soil

S. Yamamoto*, K. Tarutani, K. Yamasoto, D. Iskandar, T. Iida

*この研究の対応する著者

研究成果: Paper査読

抄録

A continuous radon (Rn-222) concentration monitoring system in underground soil was developed and tested. The system consists of 19mm diameter, 1100mm long detector 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) scintillator film and a photomultiplier tube (PMT) detect alpha particles from radon and its daughters. When the system is in measurement, the detector part is buried into underground soil. Energy resolution of approximately 70% full width half maximum (FWHM) was obtained for 5.5MeV alpha particles from Am-241. Both rise time and fall time of the system were measured to be approximately 1 to 2 hours. Time variations of the radon concentration in different depth of the underground soil were successively obtained using the four sets of the developed system. With these results, it is confirmed that the developed system is useful for continuous measurements of radon concentration in underground soil.

本文言語English
ページ6/313-6/316
出版ステータスPublished - 2000
外部発表はい
イベント2000 IEEE Nuclear Science Symposium Conference Record - Lyon, France
継続期間: 2000 10月 152000 10月 20

Conference

Conference2000 IEEE Nuclear Science Symposium Conference Record
国/地域France
CityLyon
Period00/10/1500/10/20

ASJC Scopus subject areas

  • 放射線
  • 核物理学および高エネルギー物理学
  • 放射線学、核医学およびイメージング

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