X-ray photoelectron spectra of a gold foil.
Survey spectrum; Au 5p, 4f, 4d, 4p, and 4s spectra; valence-band spectrum; and Au NNV X-ray-induced Auger emission spectrum of a gold foil sputter-cleaned with argon ions. Spectra acquired using a monochromated Al Kα X-ray source (hν = 1486.7 eV) operating at 150 W. Survey spectrum recorded from 1400 to -5 eV at 1 eV per step, a dwell time of 250 ms, and a pass energy 160 eV. Region spectra recorded at 0.025 eV per step, a dwell time of 250 ms (per sweep for multiple sweeps), and a pass energy of 20 eV. Au 4f spectra also acquired at pass energies of 10 and 5 eV. Pressure 3E-09 Torr.
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Survey spectrum of same sample prior to sputtering.