title: MAGIC SHIMMING: gradient shimming with magic angle sample spinning.
abstract: A simple method to automatically shim NMR samples spinning at the magic angle is introduced based on the gradient shimming approach. The field inhomogeneity along the spinning axis is measured and automatically corrected. The combination of a normal magic angle spinning (MAS) probe, a conventional homospoil gradient, and a set of properly chosen standard room-temperature shims are used to perform the gradient shimming of samples spinning at the magic angle. The resulting (13)C NMR adamantane linewidth is less than 1 Hz (0.0078 ppm at 11.7 T).
authors.affiliation: JEOL RESONANCE Inc., Musashino, Akishima, Tokyo 196-8558, Japan. yunishiy@jeol.co.jp
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Nishiyama
authors.forename: Yu
authors.initials: Y
authors.lastname: Tsutsumi
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Utsumi