Coster, D.

Japanese: Coster,D.(英語表記)CosterD
Coster, D.

...However, based on Moseley's law of elemental characteristic X-rays and NHD Bohr's theory of atomic structure, Bohr deduced that element 72 was a homologue of tetravalent elements 40 (zirconium Zr and thorium Th). Based on this, in 1913, Hungarian G. von Hevesy and Dutch D. Coster (1889-1950), who were in Bohr's laboratory, performed X-ray analysis of the zirconium mineral zircon and confirmed the presence of element 72 as predicted by Bohr. They then extracted the salt from the aqueous solution and repeated fractional crystallization to isolate the new element. ...

From [Hebesy]

…He received his doctorate from the University of Freiburg, served as assistant to F. Haber at the Karlsruhe Institute of Technology, and in 1911 conducted research on radioactivity under E. Rutherford at the University of Manchester. In 1923, working with Dirk Coster (1889-1950) under NHD Bohr in Copenhagen, he discovered element 72, hafnium, by X-ray analysis, providing significant support for Bohr's theory of atomic structure. In 1926, he became a professor at the University of Freiburg, and during World War II, he fled to Sweden and served as a professor at the University of Stockholm. …

*Some of the terminology that mentions "Coster, D." is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…しかし元素の特性X線に関するモーズリーの法則およびN.H.D.ボーアの原子構造論から,ボーアは72番元素が4価の40番元素のジルコニウムZrやトリウムThの同族元素であると推定した。これにもとづき,1913年ボーアの研究室にいたハンガリーのG.vonヘベシーおよびオランダのコスターD.Coster(1889‐1950)は,ジルコニウム鉱物ジルコンのX線分析を行って,ボーアの予想どおりの72番元素の存在を確かめた。そしてこれから水溶液の塩をとり出し,分別結晶をくりかえし,新元素を分離した。…

【ヘベシー】より

…フライブルク大学で学位を得,カールスルーエ工業大学でF.ハーバーの助手を務め,1911年マンチェスター大学のE.ラザフォードのもとで放射能の研究を行った。23年コペンハーゲンのN.H.D.ボーアのもとでコスターDirk Coster(1889‐1950)と共同で,X線分析法によって72番元素ハフニウムを発見し,ボーアの原子構造論に大きな支持を与えた。26年フライブルク大学教授となり,第2次大戦中スウェーデンに亡命し,ストックホルム大学教授を務めた。…

※「Coster,D.」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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