linear Napierian absorption coefficient

symbol: $\alpha$

synonyms: absorption coefficient, Napierian absorption coefficient

https://doi.org/10.1351/goldbook.08265

Napierian absorbance ($A_{\rm{e}}$) divided by path-length ($l$). $\alpha = A_{\rm{e}}/l$.

Note:
$\alpha$ is the reciprocal of the optical absorption depth.

See also: molar Napierian absorption coefficient, molar decadic absorption coefficient

Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 665 (https://doi.org/10.1515/pac-2019-0203)