Abstract
The M 5 (3d 5/2) photoelectron line of Ag metal was measured in coincidence with the M 5–N 45N 45 ( 1G or 3F) Auger-electron line by Auger-photoelectron coincidence spectroscopy (APECS). The M 5 photoelectron line of Ag metal measured in coincidence with either the 1G or the 3F Auger-electron line is unshifted, within the accuracy of the experiment. As the theory [M. Ohno, J. Electron Spectrosc. Relat. Phenom. 124 (2002) 53] predicts, the energy shift and asymmetrical narrowing of the coincidence photoelectron line compared to the singles one is much smaller than that in Cu metal.
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