Title: intensity
Long Title: IUPAC Gold Book - intensity
DOI: 10.1351/goldbook.I03073
Status: current

Definition
The ratio of intensity of a separated ion beam to the intensity of the separated ion beam which has the greatest intensity. This ratio is generally equated to the normalized ratio of the heights of the respective peaks in the mass spectrum, with the height of the base peak being taken as 100.

Related Term
- mass spectrum: https://goldbook.iupac.org//terms/view/M03749

Sources
- Orange Book, 2nd ed., p. 206 (https://media.iupac.org/publications/analytical_compendium/)
- PAC, 1991, 63, 1541. 'Recommendations for nomenclature and symbolism for mass spectroscopy (including an appendix of terms used in vacuum technology). (Recommendations 1991)' on page 1554 (https://doi.org/10.1351/pac199163101541)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/I03073/html
- json: https://goldbook.iupac.org/terms/view/I03073/json
- xml: https://goldbook.iupac.org/terms/view/I03073/xml

Citation: Citation: 'intensity' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.I03073
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Accessed: 2026-07-24T22:28:46+00:00