Fast single-gradient simultaneous measurement of D and T2 in liquids via the distant dipolar field

Here we show that simultaneous measurement of the self-diffusion coefficient D and the relaxation time T2 using the NMR signal in the presence of long-range dipolar interactions can be performed using a single-square gradient pulse. Furthermore, during acquisition, a train of 180° radio-frequency pulses is utilized in order to improve signal-to-noise efficiency and to reduce the diffusion-attenuation associated with local field inhomogeneities. The new approach can determine D and T2 in a single-shot acquisition. The results obtained for water protons show good agreement when compared to standard techniques. Finally, this method offers a new possibility for monitoring fast processes.