Instrument line shape

{
  "id": "MLC-T-CHM-005905",
  "term": "Instrument line shape",
  "field": "Chemistry",
  "definition": "The characteristic spectral profile produced by a spectroscopic instrument when measuring a monochromatic input signal. This shape is determined by the optical and electronic properties of the instrument, including slit widths, detector response, and aberrations. It contributes to the observed width and shape of spectral peaks and can be described by functions like Gaussian or Lorentzian.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "Gaussian band",
    "Voigt function",
    "apodization function"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 662 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/instrument-line-shape/"
}