Purcell, EM (English spelling) PurcellEM

Japanese: Purcell,E.M.(英語表記)PurcellEM
Purcell, EM (English spelling) PurcellEM

…Recent high-resolution mass analyzers have sensitivities on the order of ppm in atomic mass units, and are used as one of the methods for elemental analysis. Nuclear magnetic resonance was originally invented independently by Felix Bloch (1905-82) and Edwards Miles Purcell (1912-97) as a means of measuring the magnetic moment of nuclei. However, since it was discovered that the resonance frequency depends not only on the type of nucleus but also on its chemical environment (chemical shift), nuclear magnetic resonance has been eagerly developed by chemists. …

[Nuclear Magnetic Resonance]


[Early history]
W. Pauli was the first to point out the possibility that certain nuclei could act as magnets (1924). The first to observe the NMR phenomenon were two American physicists, F. Bloch and E.M. Purcell (1945). At the time, NMR was considered a method for precise measurement of the magnetic moment of atomic nuclei.

*Some of the terminology references "Purcell, EM" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…近年の高分解能質量分析器は原子質量単位でppmのオーダーの感度をもち,元素分析法の一つとしても利用されている。核磁気共鳴は,もともと核の磁気モーメント測定手段として,ブロッホFelix Bloch(1905‐82)とパーセルEdwards Miles Purcell(1912‐97)によって独立に考案された。しかし共鳴周波数は核の種類だけではなく,その化学的環境にも依存すること(化学シフト)が発見されて以来,核磁気共鳴は化学者によって貪欲に開発された。…

【核磁気共鳴】より


[初期の歴史]
 ある種の核が磁石として働く可能性を最初に指摘したのはW.パウリである(1924)。最初にNMR現象を観測したのは2人のアメリカの物理学者ブロッホF.BlochとパーセルE.M.Purcellであった(1945)。当時はNMRは原子核の磁気モーメントの精密測定法として考えられていた。…

※「Purcell,E.M.」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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