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three-window method

three-window method

A method used for quantitative element (elemental) mapping by EELS. The process of the "three-window method" is as follows. Two background intensities before the inner-shell excitation of a certain element are acquired. The background intensity at the inner-shell excitation of the element is obtained by extrapolation using the two background intensities. Then, the obtained background intensity at the inner-shell excitation is subtracted from the spectral intensity of the inner-shell excitation. This method enables us to perform quantitative element mapping.

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