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electron spectroscopy
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Kai Manne Börje Siegbahn
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electron spectroscopy

chemistry
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electron spectroscopy, method of determining the energy with which electrons are bound in chemical species by measuring the kinetic energies of the electrons emitted upon bombardment of the species with X-ray or ultraviolet radiation. Details of the structure may be inferred from the results because differences in the arrangements of the atoms affect the amount of energy required to eject electrons. See also Auger effect.