LAUSR

To date, it is no longer necessary to demonstrate the contribution and the usefulness of field evaporation simulation to understand and to interpret atom probe tomography (APT) analyses [1, 2]. In addition, recently, simulation has been also used to perform APT data reconstruction [3]. There are many commonly used simulation models, from sub-atomic scale [4,5] up to atomic scale [2], according to the specific studied phenomena. Nevertheless, it appears today a need to have simulation models at lower scale (i.e. mesoscopic scale), such as level set methods [6]. Even if, these models show qualitative agreement with experimental data in 2D simulation [7], it is no completely the case in 3D, where some improvements remain to be performed [8]. In this paper, a new field evaporation simulation in 3D at the mesoscopic scale is presented. The aptitude of this new approach to reproduce APT experimental observations, while maintaining low computational and memory resources, is demonstrated through the simulation of analyses of complex microstructures under laser irradiation.