Development of β-γ Discriminatory Beta-ray Spectrometer—β-ray Portable Spectrometer for <sup>90</sup>Sr-detection Due to Fukushima Dai-ichi Nuclear Power Plant Accident—

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  • β-γ弁別型ベータ線スペクトロメーターの開発—福島第一原発事故による<sup>90</sup>Sr汚染検査用可搬型β線検出器—
  • β-γ弁別型ベータ線スペクトロメーターの開発 : 福島第一原発事故による⁹⁰Sr汚染検査用可搬型β線検出器
  • v-gベンベツガタ ベータセン スペクトロメーター ノ カイハツ : フクシマ ダイイチ ゲンパツ ジコ ニ ヨル ⁹ ⁰ Sr オセン ケンサヨウ カハンガタ βセン ケンシュツキ

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<p>As for environmental radiation contamination, nuclear fuel coolant radioactive contamination and that from radioactive debris etc., due to the accident at the Fukushima Dai-ichi Nuclear Power Plant that accompanied the Great East Japan Earthquake, the portable type conventional detection system of 90Sr has been strongly waited. Presently 90Sr is a main radioactive nucleus, the half-life of which is 28 years and radiation by 90Sr is β-ray only. A portable-type detection system which is capable of measuring the radioactivity concentration of 101 to 107 Bq/kg, together with the β-ray spectrum, has been developed successfully by means of β-γ discrimination technique.</p>

Journal

  • RADIOISOTOPES

    RADIOISOTOPES 69 (3), 103-115, 2020-03-15

    Japan Radioisotope Association

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