The electron affinity of lutetium has been measured using laser photodetachment electron spectroscopy. This is the first electron affinity measurement for lutetium. The electron affinity of lutetium was measured as 0.34±0.01 eV. One bound excited state of Lu- was also observed in the photoelectron spectra, and the binding energy of this excited state relative to the ground state of lutetium was measured as 0.16±0.02 eV. The present experimental measurements are compared with recent calculations.
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Davis et al. (2001) studied this question.
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