Flip angle

{
  "id": "MLC-T-CHM-004484",
  "term": "Flip angle",
  "field": "Chemistry",
  "definition": "The angle by which the net magnetization vector of nuclear spins is rotated away from the static magnetic field direction by a radiofrequency pulse in nuclear magnetic resonance (NMR) spectroscopy. This angle is controlled by the duration and amplitude of the radiofrequency pulse. A 90-degree flip angle maximizes the signal in many NMR experiments.",
  "synonyms": [
    "tip angle"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "nuclear magnetic resonance spectroscopy",
    "radiofrequency"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 688 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/flip-angle/"
}