IUPAC - optical absorption depth (08650)

optical absorption depth symbol: $μ_{β}$ , units: $m$ , $μ m$

https://doi.org/10.1351/goldbook.08650

Depth in a sample at which the intensity of an incident beam is reduced to

1 / e

of its value at the surface of the sample.

Notes:

$μ_{β}$ is the reciprocal of the linear Napierian absorption coefficient.
SI unit: $m$ . Common unit: $μ m$ .

Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 757 [Terms] [Paper]

Citation: 'optical absorption depth' 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.08650 RIS BibTex EndNote

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Version 3.0.1 (7371 Terms)

optical absorption depth symbol: $μ_{β}$ , units: $m$ , $μ m$

Alphabetical Index

Additional Indexes

Version 3.0.1 (7371 Terms)

optical absorption depth symbol: μβ, units: m, μμm

optical absorption depth symbol: $μ_{β}$ , units: $m$ , $μ m$