pulse sequence 

https://doi.org/10.1351/goldbook.08396
Timed series of radiofrequency pulses and magnetic field gradients that define a part or whole of a nuclear magnetic resonance spectroscopy experiment.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 701 (https://doi.org/10.1515/pac-2019-0203)