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The Solid Effect

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Abstract.

The present paper presents a tutorial on the solid effect (SE) as a mechanism for dynamic nuclear polarization (DNP). DNP is a method to orient nuclear spins in a solid. For this purpose, this solid is doped with a small amount of unpaired electron spins and a microwave field is used to transfer the orientation of the electron spins to the nuclear spins. Three different mechanism may be responsible for successful DNP: the Overhauser effect in metals and liquids, the SE and thermal mixing (TM) in insulators. The fundamental process of the SE are flip-flop transitions between the electron spins and the nuclear spins induced by the microwave field. In this paper the SE is approached in a similar way as in the description of cross polarization and coherence transfer between nuclear spins.

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Author's address: W. Thomas Wenckebach, Institute de Physique des Nanostructures, Faculté des Sciences de Base, Ecole Polytechnique Fédérale de Lausanne, station 3, 1015 Lausanne, Switzerland

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Wenckebach, W. The Solid Effect. Appl Magn Reson 34, 227–235 (2008). https://doi.org/10.1007/s00723-008-0121-9

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  • DOI: https://doi.org/10.1007/s00723-008-0121-9

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