double pulsed-field gradient spin-echo excitation 

Initialism: DPFGSE
https://doi.org/10.1351/goldbook.08332
Pulse sequence in nuclear magnetic resonance spectroscopy in which pulsed-field gradients are applied to a doubled spin echo sequence to cleanly and precisely excite particular resonances.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 686 [Terms] [Paper]