Double resonance

{
  "id": "MLC-T-CHM-003409",
  "term": "Double resonance",
  "field": "Chemistry",
  "definition": "A spectroscopic technique where two different electromagnetic fields are simultaneously applied to a sample to perturb two distinct energy level transitions. In nuclear magnetic resonance (NMR) spectroscopy, this often involves irradiating one type of nucleus while observing another, leading to simplification of spectra or enhancement of signals. Spin decoupling is a common application of double resonance in NMR.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "nuclear magnetic resonance spectroscopy",
    "selective excitation",
    "spin decoupling"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 686 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/double-resonance/"
}