slit width

of a dispersive spectrometer
https://doi.org/10.1351/goldbook.08284
Distance between the blades of the entrance or exit slits in a monochromator.
Note: Spectral slit width is the range of wavenumbers/wavelengths or frequencies that the physical slit widths allow to be passed by the monochromator and is often determined as the full width at half maximum measured by the instrument for a line that is known to be extremely sharp.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 673 [Terms] [Paper]
Citation: 'slit width' 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.08284 RIS BibTex EndNote
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