multiple-quantum magic angle spinning NMR

initialism: MQMAS
https://doi.org/10.1351/goldbook.08378
Measurement method of nuclear magnetic resonance spectroscopy used to obtain high-resolution NMR spectra of quadrupolar nuclei by removal of the anisotropy of the quadrupole interaction, involving creating a triple-quantum (or 5Q) coherence.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 696 [Terms] [Paper]