NMR - nuclear magnetic resonance

Japanese: NMR - NMR/えぬえむあーる(英語表記)nuclear magnetic resonance
NMR - nuclear magnetic resonance
Nuclear magnetic resonance is a method of non-destructively learning about the structure and state of a substance by using the spin of atomic nuclei. When an atomic nucleus with nuclear spin is placed in a strong magnetic field, the nuclear spin splits into two energy states, one parallel to the magnetic field and the other opposite, and absorbs electromagnetic waves with a wavelength corresponding to the energy difference. This energy difference is influenced by the distribution of electrons around the nucleus and the bonding state of the atoms, which is observed as a resonance absorption spectrum. In particular, high-resolution NMR of ^1H and ^13C nuclei has become indispensable as a means of determining the structure of organic compounds.

(Professor Teijiro Ichimura, Tokyo Institute of Technology / 2007)

Source : "Chiezo" published by Asahi Shimbun Publications Co., Ltd. About Chiezo

Japanese:
核磁気共鳴といい、原子核のスピンを利用して物質の構造・状態を非破壊的に知る方法。核スピンを持つ原子核を強い磁場の中に置くと、核スピンが磁場と平行、または逆方向の2つのエネルギー状態に分裂し、そのエネルギー差に対応する波長の電磁波を吸収するようになる。このエネルギー差は、その原子核の周辺の電子の分布や原子の結合状態に影響され、それが共鳴吸収スペクトルとして観測される。特に、^1H及び^13C核の高分解能NMRは有機化合物の構造決定手段として必要不可欠になっている。

(市村禎二郎 東京工業大学教授 / 2007年)

出典 (株)朝日新聞出版発行「知恵蔵」知恵蔵について 情報

<<:  NMR Imaging - NMR Imaging

>>:  NFL - National Football League

Recommend

DAC - Duck

The Development Assistance Committee is an interna...

Tamana [city] - Tamana

A city in northwest Kumamoto Prefecture. It was in...

deathwatchbeetle

...The general name for the Anobiidae family of b...

Lolium perenne (English spelling) Lolium perenne

…【Hoshikawa Kiyochika】. … From "Dokumugi (Po...

Yurii Dolgorukii

?-1157 Prince of ancient Russia. Son of Grand Prin...

Luster color - Luster color

A type of pottery in which a film-like coating of ...

Japan Steel Works, Ltd.

A manufacturer of cast and forged steel products, ...

Cornus officinalis - Cornus officinalis

It is a deciduous tree of the Cornaceae family (A...

Giant black jay - Ookurogwai

A perennial plant of the Cyperaceae family (APG c...

L'Hermite, T. (English spelling) LHermiteT

...The true history of French cinema began on Dec...

Danshurou Enshi

Rakugo performer. (1) The first (1838-1900, Tenpo ...

Baculum irregulariterdentatum

...or a general term for insects belonging to the...

Upper Nada - Kaminada

The central settlement of Futami in the southwest ...

Zheng; Chêng

One of the princely states of the Zhou dynasty in ...

Carval, J. - Carval

...However, in terms of visual arts, not many not...