The pulsed field gradient echo PFGE NMR experiment

THE PULSED FIELD GRADIENT ECHO (PFGE) NMR EXPERIMENT 

For the basic PFGE experiment a spin-echo experiment (either the two-pulse Hahn echo sequence, Fig. la, or the three-pulse stimulated echo sequence. Fig. lb) is combined with two magnetic field gradient pulses with duration 8 and separated by the time duration A. The gradient pulses generate a magnetic 

Callaghan points out the analogy between PFGE NMR experiments in the short-gradient-pulse limit and diffraction experiments. Under the short gradient pulse condition the echo intensity obtained from a PFG NMR experiment can be written as  

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The Pulsed Field Gradient Echo (PFGE) NMR Experiment... 

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