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Clé Belstaff Femme Leas Vestes Noir

Clé Belstaff Femme Leas Vestes Noir

Electron energy-loss spectrometry (EELS) is an important technique for microanalysis of thin films in the transmission electron microscope. Absolute quantification of elements on Doudoune Parajumpers Boutique a scale of less than 10 nm is feasible when the chromatic aberration of the post-specimen electron lenses is properly corrected. The accuracy of the quantification is influenced by several effects. We present a method for the compensation of the chromatic error using a defocus series and a correction of the chromatic image shift. Experiments using specimens with an edge-like concentration function (planar interface, abrupt thickness variation) were Doudoune Parajumper Prix performed on a parallel-detection EELS system (GATAN 666 PEELS) and on an energy-selecting imaging filter. Comparison of these results suggests that for accurate quantification on selected positions of the specimen the PEELS should be used, whereas the imaging filter is better suited for a fast overview of the elemental distribution in a larger area. The Parajumper Cuir Femme influence of Bragg scattering on the results of the quantification for both systems is discussed.

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