Multiple-pass cell

{
  "id": "MLC-T-CHM-007665",
  "term": "Multiple-pass cell",
  "field": "Chemistry",
  "definition": "A sample cell designed for spectroscopic measurements that increases the effective path length of light through a sample by reflecting the light beam multiple times. This design enhances the absorption signal for weakly absorbing samples or low-concentration analytes. It is commonly employed in gas-phase spectroscopy to achieve higher sensitivity.",
  "subject": "Analytical Chemistry",
  "references": [
    "PAC, 1988, 60, 1449. 'Nomenclature, symbols, units and their usage in spectrochemical analysis - VII. Molecular absorption spectroscopy, ultraviolet and visible (UV/VIS) (Recommendations 1988)' on page 1454 (https://doi.org/10.1351/pac198860091449)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/multiple-pass-cell/"
}