Term: natural broadening
https://doi.org/10.1351/goldbook.N04087

Definition:
Broadening which has its origin in the finite optical lifetime of one or both levels involved in the transition.

Related Terms:
1) lifetime (http://doi.org/10.1351/goldbook.L03515).

Source: Orange Book, 2nd ed., p. 121 (https://media.iupac.org/publications/analytical_compendium/)

Citation: 'natural broadening' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.N04087

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