携帯用放射能測定器の2, 3の特性について

DOI Web Site Web Site
  • 黒沢 龍平
    早稲田大学理工学研究所放射性同位元素研究室

書誌事項

タイトル別名
  • On the Study of the Characters of Survey Meters
  • ケイタイヨウ ホウシャノウ ソクテイキ ノ 2 , 3 ノ トクセイ ニ ツイテ

この論文をさがす

抄録

The purpose of this paper is to provide a reference information for directivity and other characters of portable survey meters, which are connected with GM-tube, Bi-cathode GM-tube and scintillation detector.<BR>Directivity of these instruments has sharp character for radiations in order of 32P-βray, radiations of carnotite and 137Cs-γAray. These characters depend on absorption of the probe and the envelope. It is the only special case that these are calculated by the cross section of the materials in the detector head. Then the calculated values agree with the observation values.<BR>In this study, it is interesting with relative counting efficiency for various radiation sources. There is no wide difference between counting efficiency by the GM-tube survey meter and by thescintillation for the radioactive minerals which are secondary or thin layer distribution. It is concluded that the above mentioned property due to abundant ratio of β-and γ-rays of the minerals. Therefore, there is a wide difference between counting efficiency and directivity of the survey meters for the above minerals and these for the others, which have different conditions of distribution and degree of equilibrium.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 75 (847), 2-8, 1959

    一般社団法人 資源・素材学会

詳細情報 詳細情報について

問題の指摘

ページトップへ