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Featured Article. Please see our HPLC PDA Detector section to find manufacturers that sell these products. Photodiode array detectors âvariously abbreviated as âPDA detectorsâ or simply âDADsââare essentially spectrophotometers that transiently measure the absorbance of light by a liquid flowing past.
Photoelectron spectroscopy is an experimental method used to determine the electronic structure of atoms and molecules. Photoelectron spectrometers ionize samples by bombarding them with high-energy radiation, such as UV or x-rays, and detecting the number and kinetic energy of ejected electrons.