Varieties of NMR Applications

核磁共振应用的多种类型

The versatility of nuclear magnetic resonance (NMR) has made it a widespread scientific tool. Some of the applications and techniques of NMR are

核磁共振（NMR）的多功能性使其成为一种广泛使用的科学工具。NMR的一些应用和技巧是

Magnetic resonance imaging (MRI)

磁共振成像（MRI）

Continuous wave (CW) NMR

连续波（CW）核磁共振

Index

Nuclear Spectra Concepts

References
Rohlf
Ch 11

Hobbie
Ch 17

Becker
App. A

索引核谱概念参考文献 Rohlf 第11章 Hobbie 第17章 Becker 附录A

HyperPhysics***** Nuclear

HyperPhysics ***** 核物理

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Continuous Wave NMR

连续波核磁共振

One of the earliest and simplest applications of nuclear magnetic resonance is the continuous wave or CW NMR. In this kind of application, both the magnetic field and the RF excitation signal are continuously on. Either the magnetic field is kept constant and the frequency of the RF excitation is varied, or the magnetic field is varied while keeping the RF input frequency constant. Either approach allows you to sweep through the resonance of the sample under investigation.

核磁共振的一种最早且最简单的应用是连续波或CW NMR。在这种应用中，磁场和射频激发信号都是持续开启的。要么保持磁场恒定而改变射频激发的频率，要么保持射频输入频率恒定而改变磁场。无论采用哪种方法，都可以对被研究样品的共振进行扫描。

This sketch of an NMR instrument shows an arrangement where the signal detection coil around the sample is oriented perpendicular to the RF excitation coil.

这幅核磁共振仪器的示意图展示了一种布置，其中围绕样品的信号检测线圈与射频激发线圈垂直排列。