Multiple rotary echoes in nitrogen-14 quadrupolar spin-system

This is a study of the influence of multi-pulse sequences consisting of blocks of short-repetition pulses on the nitrogen-14 NQR spin-system. The experiment demonstrated that the application of such sequences generates multiple rotary echo signals in the effective field of the pulse sequence similar to those generated by conventional spin-locking multi-pulse sequences. The detected RE signals were analysed and the obtained results presented, adding to the understanding of the dynamic properties of the quadrupolar spin-system. The experimental results are obtained for polycrystalline NaNO2.