For some applications of Atom Probe Tomography (APT) accurate chemical or isotopic quantification is major objective. While there are limitations in the quantitative analysis of samples by APT, there are also ways to mitigate these limitations by optimising the acquisition conditions, or by considering the most appropriate methods for data analysis. This webinar will discuss the challenges of quantifying the peaks in APT mass spectrum data, covering aspects such as ranging and peak shape considerations, and reviewing some recent results in this area. In particular, examples will be given from isotope geochemistry, where the accuracy of isotopic quantification is especially important, and where comparisons can be made with well-established reference materials.
On demand
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About the presenter:
David Saxey
Senior Research Fellow
Curtin University
David received his PhD in experimental physics from the University of Western Australia in 2004 and has worked in high-precision instrumentation and materials characterisation. He has more than 14 years’ experience in research and technique development in atom probe tomography and has applied APT methods to a wide range of materials, within both academic and industrial collaborations. David’s current research interests are in the application of atom probe techniques to geological research, and the development of atom probe data analysis methods. David is the facility leader for the Geoscience Atom Probe in the John de Laeter Centre at Curtin University, Australia, and has previously managed atom probe facilities at the University of Sydney and the University of Oxford. The Geoscience Atom Probe facility was established in 2015 with the purpose of applying atom probe tomography to geoscience research.