Free Induction Decay in Zigzag Spin Chains in a Multi-pulse NMR Experiment

The free induction decay (FID) is investigated for zigzag (alternating) spin chains in the approximation of the nearest neighbor interactions. The dependence of the FID on the ratio of dipolar coupling constants (the parameter of dimerization) is also studied. Possible comparison of the obtained results with the experimental data for proton zigzag chains in a single crystal of hambergite is discussed.