NMR in rotating magnetic fields: Magic angle field spinning

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Magic angle sample spinning has been one of the cornerstones in high-resolution solid state NMR. Spinning frequencies nowadays have increased by at least one order of magnitude over the ones used in the first experiments and the technique has gained tremendous popularity. It is currently a routine procedure in solid-state NMR, high-resolution liquid-state NMR and solid-state MRI. The technique enhances the spectral resolution by averaging away rank 2 anisotropic spin interactions thereby producing isotropic-like spectra with resolved chemical shifts and scalar couplings. Andrew proposed that it should be possible to induce similar effects in a static sample if the direction ... continued below

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Sakellariou, D.; Meriles, C.; Martin, R. & Pines, A. September 10, 2004.

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Magic angle sample spinning has been one of the cornerstones in high-resolution solid state NMR. Spinning frequencies nowadays have increased by at least one order of magnitude over the ones used in the first experiments and the technique has gained tremendous popularity. It is currently a routine procedure in solid-state NMR, high-resolution liquid-state NMR and solid-state MRI. The technique enhances the spectral resolution by averaging away rank 2 anisotropic spin interactions thereby producing isotropic-like spectra with resolved chemical shifts and scalar couplings. Andrew proposed that it should be possible to induce similar effects in a static sample if the direction of the magnetic field is varied, e.g., magic-angle rotation of the B0 field (B0-MAS) and this has been recently demonstrated using electromagnetic field rotation. Here we discuss on the possibilities to perform field rotation using alternative hardware, together with spectroscopic methods to recover isotropic resolution even in cases where the field is not rotating at the magic angle. Extension to higher magnetic fields would be beneficial in situations where the physical manipulation of the sample is inconvenient or impossible. Such situations occur often in materials or biomedical samples where ''ex-situ'' NMR spectroscopy and imaging analysis is needed.

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  • Journal Name: Magnetic Resonance Imaging; Journal Volume: 23; Related Information: Journal Publication Date: 2005

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  • Report No.: LBNL--56821
  • Grant Number: DE-AC02-05CH11231
  • Office of Scientific & Technical Information Report Number: 887191
  • Archival Resource Key: ark:/67531/metadc875023

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • September 10, 2004

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 16, 2016, 1:09 p.m.

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Sakellariou, D.; Meriles, C.; Martin, R. & Pines, A. NMR in rotating magnetic fields: Magic angle field spinning, article, September 10, 2004; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc875023/: accessed September 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.