Publication

Broadband excitation of quadrupolar order by modified Jeener-Broekaert sequences

Geoffrey Bodenhausen
1986
Journal Articles

Abstract

Modified Jeener-Broekaert (1967) expts. are proposed for use in NMR spectroscopy of spins S = 1 nuclei in anisotropic phases. The new pulse sequences provide efficient creation of quadrupolar order over a wide range of values of the quadrupolar splitting. The new sequences can be used even under nonideal exptl. conditions. [on SciFinder (R)]

Official source

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Geoffrey Bodenhausen
1986
Journal Articles

Abstract

Official source

Related concepts (15)

Nuclear magnetic resonance

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.

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.

J-coupling

In nuclear chemistry and nuclear physics, J-couplings (also called spin-spin coupling or indirect dipole–dipole coupling) are mediated through chemical bonds connecting two spins. It is an indirect interaction between two nuclear spins that arises from hyperfine interactions between the nuclei and local electrons. In NMR spectroscopy, J-coupling contains information about relative bond distances and angles. Most importantly, J-coupling provides information on the connectivity of chemical bonds.

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