thorium emanation
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…A gaseous radioactive nuclide belonging to the thorium series, 220 Rn, one of the isotopes of radon Rn, was once called this (symbol Tn). It is also called thorium emanation. [Nakahara Katsumasa] … *Some of the terminology that mentions "thorium emanation" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
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…トリウム系列に属する気体放射性核種で，ラドンRnの同位体の一つである220Rnを，かつてこのように呼んだ(記号Tn)。トリウムエマネーションthorium emanationともいう。【中原 勝儼】。… ※「thorium emanation」について言及している用語解説の一部を掲載しています。 出典｜株式会社平凡社世界大百科事典 第２版について | 情報 |
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