The sulfur 2p absorption edge and valence band resonant photoelectron spectra of molybdenum disulfide (MoS2), obtained using synchrotron radiation, are compared to the Mo 4p edge results from previous work. A pre-edge feature in the S 2p data shows transitions to unoccupied, dominantly Mo 4d antibonding levels, indicating that significant covalent interactions exist between Mo and S valence orbitals. Resonant enhancement of valence band photoelectron shake-up peaks is observed at ...
The surface oxidation of a steel-like alloy was investigated to help determine how the efficiency of lubricant additives such as lead naphthenate might be affected by the chemical state of a high-Cr steel bearing surface. Soft X-ray photoelectron spectroscopy (SXPS; hv = 130 - 600 eV) employing synchrotron radiation and X-ray photoelectron spectroscopy (XPS; hv= 1486.6 eV) employing Al-K alpha X rays were used to study the effect of molecular ...
The surface oxidation of a steel-like alloy was investigated to help determine how the efficiency of lubricant additives such as lead naphthenate might be affected by the chemical state of a high-Cr steel bearing surface. Soft X-ray photoelectron spectroscopy (SXPS; hv = 130 - 600 eV) employing synchrotron radiation and X-ray photoelectron spectroscopy (XPS; hv = 1486.6 eV) employing Al-K alpha X rays were used to study the effect of ...
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