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electron prism

electron prism

An "electron prism" is a (spectroscopic) analyzer to disperse energies of electrons similar to that a glass prism disperses the differences in wavelengths of light. The electron prism is essential for EELS analyzers and is effectively used for energy filtering of TEM images and diffraction patterns. They include the Wien filter, the omega filter, the alfa filter and the Castaing-Henry filter.

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