...To improve on this point, FW Aston invented a mass spectrometer with velocity focusing, and AJ Dempster invented a mass spectrometer with a 180-degree magnetic field with direction focusing, and they discovered isotopes and measured their abundance ratios. In 1835, Josef Heinrich Elizabeth Mattauch (1895- ) and Richard Franz Karl Herzog (1911- ) created a double-focusing mass spectrometer, which had a resolution of ≌100,000 and a mass measurement accuracy of 10 -6 to 10 -7 . In 1953, Wolfgang Paul invented a non-deflecting quadrupole mass spectrometer that used a quadrupole high-frequency electric field. ... *Some of the terminology that mentions "Herzog, RFK" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…この点を改めたものとして,F.W.アストンは速度収束性をもったもの,A.J.デンプスターは方向収束性をもった180度磁場を分析場とする質量分析計を考案し,同位元素の発見,その存在比の測定を行った。35年にはマッタウフJosef Heinrich Elizabeth Mattauch(1895‐ )とヘルツォークRichard Franz Karl Herzog(1911‐ )による二重収束質量分析器が作られ,その分解能は≌10万,質量測定精度は10-6~10-7に達した。53年にはポールWolfgang Paulが,四重極高周波電場を利用した非偏向型の四重極質量分析計を発明した。… ※「Herzog,R.F.K.」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 |
>>: Herzog, C. (English spelling) HerzogC
The preface to the Guan Sui chapter at the beginni...
…The coast is roughly parallel to 66.5° south lat...
Born: June 26, 1793, Santiago [Died] June 6, 1837....
During the French Mandate, he was a leader of the...
…Then, the dog repeatedly hears a bell followed b...
〘 noun 〙 A spear with a cross-shaped tip. A cross-...
〘Noun〙① A bell provided by the state to postal mes...
〘Noun〙① A roof made so that rainwater falls more o...
… [Ken Inoue]. … *Some of the terminology that me...
An organizer of Seto Inland Sea pirates in the mi...
A state established in the Netherlands in 1795 af...
A perennial plant of the lily family. It is said t...
1865-1927 Born in Bizen (Okayama Prefecture), she ...
〘Noun〙 A coin with a round hole that was minted ov...
Please see the Stone Circles page. Source: Encycl...