Radioactivity Prospecting for Groundwater Development and a New Prospecting Device with a Plastic Scintillator

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概要

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• A large amount of undeveloped groundwater may still be left in fractured rocks of rocky mountainous areas. Points with high potential for groundwater development may be found near fault zones. The indexes <SUP>214</SUP>Bi and <SUP>214</SUP>Bi/<SUP>208</SUP>Tl, measured by γ-ray radioactivity prospecting, are useful for detecting buried faults. We developed a radioactivity prospecting device with a three-layered plastic scintillator (PS) detector. This device is lighter weight, easier to use, and less expensive than conventional NaI detectors. A simple method for discriminating γ-rays of <SUP>137</SUP>Cs, <SUP>40</SUP>K, <SUP>214</SUP>Bi, and <SUP>208</SUP>Tl on a spectrum is proposed. We performed experiments that showed that the PS can be used for radioactivity prospecting.

• 独立行政法人　国際農林水産業研究センターの論文

著者

• Imaizumi Masayuki

  Department Of Earth Sciences Chiba University

• Ishida Satoshi

  Department Of Biological And Chemical Engineering Faculty Of Engineering Gunma University

• TSUCHIHARA Takeo

  Department of Rural Technologies, National Institute for Rural Engineering, NARO

• YOSHIMOTO Shuhei

  Department of Rural Technologies, National Institute for Rural Engineering, NARO

• ISHIDA Satoshi

  Department of Rural Technologies, National Institute for Rural Engineering, NARO

• UCHIYAMA Sadayuki

  Clear-Pulse Co. Ltd.

• YUUKI Youichi

  OYO Corporation

• IMAIZUMI Masayuki

  Department of Rural-Environment, National Institute for Rural Engineering, National Agriculture and Food Research Organization (NARO)

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