## interfacial layer width, $$\sigma_{\text{S}}$$

in thin films
https://doi.org/10.1351/goldbook.I03086
The @[email protected] defined by the variance of the Gaussian function fitted to the @[email protected] of the @[email protected] profile established by X-ray specular @[email protected] studies of the liquid @[email protected]
Source:
PAC, 1994, 66, 1667. (Thin films including layers: terminology in relation to their preparation and characterization (IUPAC Recommendations 1994)) on page 1674 [Terms] [Paper]