adiabatic pulse 

https://doi.org/10.1351/goldbook.08313
Radiofrequency pulse that inverts spins by using a frequency sweep during the pulse.
Notes:
  1. Adiabatic pulse allows very high spectral bandwidth and accurate flip angles to be achieved with high tolerance to spatial variations in RF field intensity and is thus of value in excitation of nuclei with frequency ranges.
  2. The sweep must be slow enough to satisfy the adiabatic condition dθ/dt≪γBeff where Beff is the effective radiofrequency magnetic flux density and θ is the angle between Beff and abscissa.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 681 [Terms] [Paper]
Citation: 'adiabatic pulse' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08313 RIS BibTex EndNote
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