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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Representation of an HR-MAS NMR probe head with an orientation of the stator at an angle (θ) of 54.7° between axis of rotation and B0. The rotation speed (vrot) of the sample reaches up to 15 kHz. A gradient coil is arranged around the rotor.