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X-Ray Photoelectron Spectroscopy (XPS)-2

X-Ray Photoelectron Spectroscopy (XPS)-2. Louis Scudiero ~scudiero; 5-2669. Electron Spectroscopy for Chemical Analysis (ESCA). h . electron e The 3 step model: excitation of electron to the e surface (diffusion energy loss) Solid Vacuum into the vacuum 2. Diffusion energy loss 3. 1. Escape Excitation total Photoemission intensity for a normal incidence I ( ) . 4. At photon energy of 1254 eV (MgK X-Ray line), = and C = The intensity ratio is IH (90)/ IC (90) = x10-4. (Based of the Scofield's calculations of the cross-sections carried out relativistically using the single potential Hartree-Slater atomic model).

orbitals and rare earths with unfilled. f. orbitals all show multiplet splitting. Ni 2p. Cr 2p. Example: Fe. 2. O 3 has 5 unpaired electrons in the 3d shell as shown below. Following photoionization in the 3s she ll, there are 2 possible final states. Schematic of Multiplet Splitting following photoionization in Fe 3+

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  Earth, Rear, Spectroscopy, X ray photoelectron spectroscopy, Photoelectron, Rare earth

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