Estimation of the Reconstruction Parameters for Atom Probe Tomography

By Baptiste Gault, F. Geuser, L. Stephenson, Michael Moody, B. C. Muddle, Simon P. Ringer. Microscopy and Microanalysis, 2008

145 citations recorded by the source corpus.

The application of wide field-of-view detection systems to atom probe experiments emphasizes the importance of careful parameter selection in the tomographic reconstruction of the analyzed volume, as the sensitivity to errors rises steeply with increases in analysis dimensions. In this article, a self-consistent method is presented for the systematic determination of the main reconstruction parameters. In the proposed approach, the compression factor and the field factor are determined using geometrical projections from the desorption images. A three-dimensional Fourier transform is then applied to a series of reconstructions, and after comparing to the known material crystallography, the efficiency of the detector is estimated. The final results demonstrate a significant improvement in the accuracy of the reconstructed volumes.

Subfields: Atomic and Molecular Physics, and Optics, Biomedical Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/8d25df2c0a84557bb5524a2084b6ab8c17fc6c8f

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In Atomic and Molecular Physics, and Optics

In Biomedical Engineering

In Materials Chemistry

Citations in the corpus

Microstructural evolution during ageing of Al–Cu–Li–x alloys (2014, methodology): “ reconstruction algorithms [27], and 3D visualisation was carried out using the commercial software I VASTM (Cameca). Calibration of the tomograms was carried out using the methods introduced in refs [28, 29]. The methods u sed for crystallographic characterisation of specimens are described in deta”
Nanostructural hierarchy increases the strength of aluminium alloys. (2010, background): “Advances in instrument technology, improved precision in tomographic reconstruction and the development of application-specific data-processing algorithms have thrust modern APT to the forefront of microscop”
Atom probe tomography spatial reconstruction: Status and directions (2013, background): “of a number of instrumental and materials parameters such as flight-path length, detection efficiency, detector area, and atomic volume [25, 26].”