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NIST X-ray Photoelectron Spectroscopy Database (SRD 20), Version 5.0
Reliable, with one-point correction of energy scale
Comment:
Ultraviolet oxidation in ozone atmosphere at 300 K for 3 h. The intensity ratio of As(V)/As(III) components was 1.87. The oxide thickness measured by XPS was 26 A. The interfacial As layer thickness was 2.0 A. The chemical shift is relative to the substrate atoms.