Relative resolution

{
  "id": "MLC-T-CHM-010158",
  "term": "Relative resolution",
  "field": "Chemistry",
  "definition": "The fineness of a spectrometer's resolution expressed as a fraction of the position on the scale where it is measured, so for an electron spectrometer it is the peak width ΔE divided by the energy E. A smaller value means a sharper instrument, and its inverse is the resolving power. In the constant retarding ratio mode of an electron energy analyser the ratio ΔE/E stays fixed while ΔE grows with energy.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "electron spectrometer"
  ],
  "references": [
    "PAC, 2020, 92, 1781. 'Glossary of methods and terms used in surface chemical analysis (IUPAC Recommendations 2020)' on page 1811 (https://doi.org/10.1515/pac-2019-0404)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/relative-resolution/"
}