Abstract
A manual procedure to determine the body-centered cubic structure of tungsten directly by its FIM micrographs and by field evaporation is reported here. It was performed to obtain a general method for determining the three-dimensional microstructure of FIM specimens, and as a first step of characterizing the method as well. It mainly consists of the following steps: The selection of the region of exploration; the localization of imaged atoms; the determination of the diameter of the tungsten atom model; simulation of the field ion micrographs; acquisition of the three-dimensional microstructure of the examined area.
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