…Element 106 was synthesized in 1974 by A. Ghiorso et al. at the Berkeley Laboratory in the United States, by bombarding 249 Cf with 18 O, and by Khrerov et al. at the Dubna Institute of Nuclear Research in the Soviet Union, by bombarding a silver target with 54 Cr ions. In 1976, Y. Oganessian et al. at the same institute in the Soviet Union reported the synthesis of element 107 with mass number 261 by bombarding bismuth with 54 Cr ions. Currently, transuranium elements such as 237 Np and 239 Pu are obtained in t units, and 238 Pu, 242 Pu, 241 Am, 243 Am, and 244 Cm are obtained in units of 100 g or more. … *Some of the terminology explanations that mention "Oganesian, YT" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…106番元素は1974年アメリカのバークリーBerkley研究所でギオーソA.Ghiorsoらが249Cfを18Oで衝撃して,またソ連のドゥブナ原子核研究所でフレーロフらが銀のターゲットを54Crのイオンで衝撃してつくっている。また76年にはソ連の同研究所のオガネシアンY.T.Oganesianらはビスマスを54Crのイオンで衝撃して質量数261の107番元素を合成したと報告している。 現在,超ウラン元素は,237Npや239Puではt単位で得られており,238Pu,242Pu,241Am,243Am,244Cmは100gあるいはそれ以上の単位で得られている。… ※「Oganesian,Y.T.」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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