Spectral band with the shape
\(H_{\rm{G}} \exp[-4\ln 2{(\tilde{\nu} - \tilde{\nu}_{0})}^{2}/W^{2}]\), where
\(H_{\rm{G}}\) is the band maximum (peak height),
\(W\) is the
full width at half maximum, and
\(\tilde{\nu}_{0}\) is the peak
wavenumber.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 660 (https://doi.org/10.1515/pac-2019-0203)