title: An efficient amplification pulse sequence for measuring chemical shift anisotropy under fast magic-angle spinning.
abstract: A two-dimensional experiment for measuring chemical shift anisotropy (CSA) under fast magic-angle spinning (MAS) is presented. The chemical shift anisotropy evolution is amplified by a sequence of π-pulses that repetitively interrupt MAS averaging. The amplification generates spinning sideband manifolds in the indirect dimension separated by the isotropic shift along the direct dimension. The basic unit of the pulse sequence is designed based on the magic-angle turning experiment and can be concatenated for larger amplification factors.
authors.affiliation: Center of Interdisciplinary Magnetic Resonance, National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee, FL 32310, USA.
authors.forename: Ivan
authors.initials: I
authors.lastname: Hung
authors.forename: Zhehong
authors.initials: Z
authors.lastname: Gan
mesh_terms: D000465:Algorithms; D016880:Anisotropy; D003627:Data Interpretation, Statistical; D005998:Glycine / Q000737:chemistry; D019906:Nuclear Magnetic Resonance, Biomolecular / Q000379:methods*
chemical_list: D005998:Glycine