spinning sidebands

https://doi.org/10.1351/goldbook.08424

Satellite peaks in a nuclear magnetic resonance spectrum symetrically spaced either side of a main peak at a frequency offset related to the rate of spinning of the sample.

Note:
In solid state nuclear magnetic resonance spectroscopy this occurs if the sample is spun at a rate less than the magnitude of the anisotropic interaction.

Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 706 (https://doi.org/10.1515/pac-2019-0203)