Journal of Magnetic Resonance 2003-09-01

A "magic sandwich" pulse sequence with reduced offset dependence for high-resolution separated local field spectroscopy.

Alexander A Nevzorov, Stanley J Opella

Index: J. Magn. Reson. 164(1) , 182-6, (2003)

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Abstract

A pulse sequence for high resolution separated local field spectroscopy based on "magic sandwich" elements is demonstrated on a single crystal sample. Simulations and experimental results show that this pulse sequence has a reduced frequency offset dependence compared to PISEMA (polarization inversion spin exchange at the magic angle). As a result, it has a larger effective range of homonuclear decoupling, reduced zero-frequency spectral distortions, and more reliable scale factors for individual resonances. In addition, it is easier to setup on commercial spectrometers.

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