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The present reconstruction method of Atom Probe Tomography (APT) has the problem that the parameter, in particular the shank angle which represents the region the signal of APT is detectable, is adjusted according to the internal length reference of the sample. The reliable APT reconstruction image could not be obtained in the sample without the reference. We propose the method to calculate the value of the shank angle from the shape of sample and the geometric position relationship between the sample and the detector. We compared the APT reconstruction image in this method to the image in the conventional method with the sample of Si isotope superlattice. The result is that APT 3D image by the new method was reconstructed equivalently to the image by the conventional method. [DOI: 10.1380/ejssnt.2015.235]

Reconstruction in Atom Probe Tomography Considering the Cone Angle of Needle-Like Shaped Samples and Evaluation of Reliability