A device used to select radiation of (or very close to) a single wavelength or energy.
- Spectra were also corrected for the wavelength-dependent efficiencies of the photomultiplier tube detector and monochromators.
- A narrow slit in front of the light source lets a small beam of light through to a device called a monochromator, which separates the wavelengths.
- Extensive studies have been carried out to obtain a reliable wavelength calibration of the monochromator and to assess the reproducibility of its sine drive arm.
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