Energy-loss near-edge structure

The Fine Structure Before and After Each Edge. ELNES is the term use to describe the energy-loss near edge structure, and this can be quite different for an element in different compounds. For example the shape of the aluminium L edges are quite different in EELS spectra from metallic aluminium and aluminium oxide, so that the chemical form of a given element may be indentified from these small variations in intensity after the edge. 

Diffuse reflectance infrared Fourier transform spectroscopy deuterium triglycine sulphate energy compensated atom probe energy dispersive analysis energy-loss near edge structure electron probe X-ray microanalysis elastic recoil detection analysis (see also FreS) electron spectroscopy for chemical analysis extended energy-loss fine structure field emission gun focused ion beam field ion microscope... 

Van Aken, PA., Liebscher, B. and Styrsa, VJ. (1998) Quantitative determination of iron oxidation states in minerals using Fe L -edge electron energy-loss near-edge structure spectroscopy. Phys. Chem. Miner., 25, 323. 

Figure 12. Comparison of old generation TEM-spectrometer typical spectrum (top) with new generation TEM-spectrometer spectrum (bottom). (Reprinted from Ultramicroscopy 96, Mitterbauer C., Kothleitner G., Grogger W., Zandbergen FL, Freitag B., Tiemeijer P and Hofer F., Electron energy-loss near-edge structures of 3d transition metal oxides recorded at high-energy resolution, 469-480, Copyright (2003) with permission from Elsevier)...

Electron energy loss near edge structure. 

ELNES Electron energy-Loss Near-Edge Structure Similar to NEXAFS, except monoenergetic high-energy electrons 60-300 KeV excite core-holes. 

Electron Energy Loss Near-Edge Structure (ELNES)... 

Tafto, J., and J. Zhu (1982). Electron energy-loss near edge structure (ELNES), a potential technique in the studies of local atomic arrangements. Ultramicro. 9, 349—54. 

X-ray absorption near edge structure(XANES) and electron energy loss near edge structure(ELNES) show similar spectra, thus almost the same theoretical analysis is valid both for these spectroscopies. The careful analysis including higher excited atomic orbitals in the basis set reproduce very well the spectral structure even in details. The core-hole effects are sometimes very important in the excited state electronic state. The theoretical analysis by the cluster model calculation provides very useful information on the local electronic property and the micro structure. 

KEYWORDS transparent oxide conductors, chemical bondings, electron energy loss near edge structures (ELNES), indium oxides, oxygen vacancy... 

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