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NIST X-ray Photoelectron Spectroscopy Database (SRD 20), Version 5.0
Reliable (reported energy within 300 eV of a reference energy)
Comment:
The sample was cleaned by Ar+ ion bombardment (Ep = 3 keV, j = 9 microamperes cm-2, incident angle = 55 degrees). The spectra were recorded at normal emission.