Abstract
AbstractThe pulsed laser induced Raman spectrum of dry chlorophyll a (Chl a) in hexane is reported. This sample is excited with a wavelength which is in resonance with an absorption band of the Chl a dimer at 432 nm. The observed resonance Raman excitation profile for several Raman bands shows that two electronic origins of the dimer are located at 434.1 and 435.4 nm and these are assigned to a pair of pseudo exciton levels. Features of this excitation profile are used to discuss the observed Raman spectra.
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