The effect of adiabatic double-resonance excitation on the indirect spin-spin coupling spectra of a liquid-like spin system is discussed. It is shown in detail how adiabatic excitation affects the coherencetransfer process from one spin species to another (restricted to the case of two spin-1/2 nuclei), when the indirect Hamiltonian cannot be disregarded with respect to that of adiabatic excitation. The approach is based on the formalism of the "single-transition Cartesian operators." The result shows that the in-phase and the antiphase coherences of the J spectra are modified and new spin-order terms can be generated. Furthermore, more widespread conditions of adiabaticity are given, together with the suggestion of new excitation pathways.
|Number of pages||7|
|Journal||Journal of Magnetic Resonance, Series A|
|Publication status||Published - 1996|
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