Double (spectral) beam spectrometers are used where two samples are to be excited
by two different wavelengths. A double- (synchronous
) beam spectrometer
is a luminescence spectrometer
in which both the excitation and emission monochromators scan the excitation and
emission spectra simultaneously, usually with a fixed wavelength
difference between excitation and emission.
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook