Term: attenuation coefficient
https://doi.org/10.1351/goldbook.A00516

Definition:
Analogous to absorption coefficient but taking into account also the effects due to scattering and luminescence. It was formerly called extinction coefficient.

Related Terms:
1) absorption coefficient (http://doi.org/10.1351/goldbook.A00037).
2) scattering (http://doi.org/10.1351/goldbook.S05487).
3) luminescence (http://doi.org/10.1351/goldbook.L03641).
4) extinction coefficient (http://doi.org/10.1351/goldbook.E02294).

Source: Green Book, 2nd ed., p. 32 (https://goldbook.iupac.org/files/pdf/green_book_2ed.pdf)

Citation: 'attenuation coefficient' 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.A00516

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