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Nuclear magnetic resonance

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Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong constant magnetic field are perturbed by a weak oscillating magnetic field (in the near field) and respond by producing an electromagnetic signal with a frequency characteristic of the magnetic field at the nucleus. This process occurs near resonance, when the oscillation frequency matches the intrinsic frequency of the nuclei, which depends on the strength of the static magnetic field, the chemical environment, and the magnetic properties of the isotope involved; in practical applications with static magnetic fields up to ca. 20 tesla, the frequency is similar to VHF and UHF television broadcasts (60–1000 MHz). NMR results from specific magnetic properties of certain atomic nuclei. Nuclear magnetic resonance spectroscopy is widely used to determine the structure of organic molecules in solution and study molecular physics and crystals as well as non-crystalline materials. NMR is also routinely used in advanced medical imaging techniques, such as in magnetic resonance imaging (MRI).

Nuclear magnetic resonance - Wikipedia Jump to content From Wikipedia, the free encyclopedia Spectroscopic technique based on change of nuclear spin state This article is about the physical phenomenon. For other uses, see Nuclear magnetic resonance spectroscopy . "NMR" redirects here. For other uses, see NMR (disambiguation) . Bruker 700 MHz nuclear magnetic resonance (NMR) spectrometer. Nuclear Magnetic Resonance (NMR) basic principles Nuclear magnetic resonance ( NMR ) is a physical phenomenon in which nuclei in a strong constant magnetic field are disturbed by a weak oscillating magnet

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