Abstract

An analysis of possible spin-locked states of a homonuclear system of two spin- 1 2 nuclei is performed. The analysis, using the density matrix approach, includes the effects of scalar coupling, chemical shift, carrier frequency offset, and RF field intensity, but not relaxation. A method to predict the locked state surviving after application of a spin-locking field to any arbitrary initial state is formulated. The mechanism of generation of COSY-type cross peaks in 2D CAMELSPIN spectra is shown, and a method for their elimination is given.

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