Assessing the Spatial Accuracy of the Reconstruction in Atom Probe Tomography and a New Calibratable Adaptive Reconstruction
| Autor: | Alec C Day, Anna V. Ceguerra, Simon P. Ringer |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Tomographic reconstruction Computer science Spatial error Inverse 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Formalism (philosophy of mathematics) 0103 physical sciences Individual data 0210 nano-technology Instrumentation Algorithm Cube root |
| Zdroj: | Microscopy and Microanalysis. 25:309-319 |
| ISSN: | 1435-8115 1431-9276 |
| DOI: | 10.1017/s1431927619000369 |
| Popis: | We define a measure for the accuracy of tomographic reconstruction in atom probe tomography, named here the spatial error index. We demonstrate that this index can be used to compare rigorously the spatial accuracy of various different approaches to the calculation of tomographic reconstruction. This is useful, for example, to evaluate the performance of alternate tomographic reconstruction approaches, and ensures that the comparisons are independent of individual data quality or other instrumental parameters. We then introduce a new “adaptive reconstruction” formalism that uses a progression of reconstruction parameters based on a per-atom correction from the cube root of the inverse of the voltage, along with linear correction factors linked to the evaporation sequence. We apply the measure for spatial accuracy to this new reconstruction protocol. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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