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Journal Article

A simple model for heteronuclear spin decoupling in solid-state NMR


Zimmermann,  Herbert
Emeritus Group Biophysics, Max Planck Institute for Medical Research, Max Planck Society;

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Ernst, M., Zimmermann, H., & Meier, B. H. (2000). A simple model for heteronuclear spin decoupling in solid-state NMR. Chemical Physics Letters, 317(6), 581-588. doi:10.1016/S0009-2614(99)01423-2.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0027-D09D-3
We propose a simple model to describe heteronuclear spin decoupling in solid−state NMR under magic−angle sample spinning (MAS). It is based on a coherent description of two heteronuclear dipolar−coupled spins (I and S) and an incoherent description of the interaction of the I−spin with a large number of other I−spins. The abundant and strongly coupled I−spins are irradiated. The selected I−spin is coupled by a spin−diffusion type superoperator to the I−spin bath, and this coupling is described by a single spin−diffusion rate constant. Such a model allows us to simulate efficiently the behavior of a spin system under heteronuclear decoupling in the case of CW irradiation as well as in the case of phase−modulated sequences such as TPPM