Output of a single beam spectrometer as a function of
wavenumber or
wavelength.
Note: A single-beam
spectrum is often termed an 'intensity
spectrum' (the measured radiant power is the intensity times the area of the detector) and does not have a flat baseline.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 672 (https://doi.org/10.1515/pac-2019-0203)