Publication

Evaluation of adiabatic frequency-modulated schemes for broadband decoupling in isotropic liquids

Geoffrey Bodenhausen
1996
Journal Articles

Abstract

Line broadening in high-resoln. NMR spectra caused by heteronuclear scalar coupling is described, and various adiabatic frequency-modulated decoupling schemes in high-resoln. NMR spectroscopy are compared. The CHRIP-95 decoupling scheme, which uses a linear frequency-swept pulse for adiabatic inversion of the magnetization, combined with an 80-step phase cycle that is derived from a 5-step phase cycle and a 16-step supercycle, allows on to cover very broad bandwidths with a great tolerance for variation in the RF amplitude. [on SciFinder (R)]

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https://infoscience.epfl.ch/entities/publication/d2a0ded0-e45f-42c9-b51d-84ef0929c57f

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Geoffrey Bodenhausen
1996
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/d2a0ded0-e45f-42c9-b51d-84ef0929c57f

About this result

Related concepts (25)

Nuclear magnetic resonance spectroscopy

Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy or magnetic resonance spectroscopy (MRS), is a spectroscopic technique to observe local magnetic fields around atomic nuclei. This spectroscopy is based on the measurement of absorption of electromagnetic radiations in the radio frequency region from roughly 4 to 900 MHz. Absorption of radio waves in the presence of magnetic field is accompanied by a special type of nuclear transition, and for this reason, such type of spectroscopy is known as Nuclear Magnetic Resonance Spectroscopy.

Two-dimensional nuclear magnetic resonance spectroscopy

Two-dimensional nuclear magnetic resonance spectroscopy (2D NMR) is a set of nuclear magnetic resonance spectroscopy (NMR) methods which give data plotted in a space defined by two frequency axes rather than one. Types of 2D NMR include correlation spectroscopy (COSY), J-spectroscopy, exchange spectroscopy (EXSY), and nuclear Overhauser effect spectroscopy (NOESY). Two-dimensional NMR spectra provide more information about a molecule than one-dimensional NMR spectra and are especially useful in determining the structure of a molecule, particularly for molecules that are too complicated to work with using one-dimensional NMR.

Solid-state nuclear magnetic resonance

Solid-state NMR (ssNMR) spectroscopy is a technique for characterizing atomic level structure in solid materials e.g. powders, single crystals and amorphous samples and tissues using nuclear magnetic resonance (NMR) spectroscopy. The anisotropic part of many spin interactions are present in solid-state NMR, unlike in solution-state NMR where rapid tumbling motion averages out many of the spin interactions.

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Evaluation of adiabatic frequency-modulated schemes for broadband decoupling in isotropic liquids

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