Dynamic reconstruction for atom probe tomography

作者：Gault Baptiste^*; Loi Shyeh Tjing; Araullo Peters Vicente J; Stephenson Leigh T; Moody Michael P; Shrestha Sachin L; Marceau Ross K W; Yao Lan; Cairney Julie M; Ringer Simon P

来源：Ultramicroscopy, 2011, 111(11): 1619-1624.

DOI：10.1016/j.ultramic.2011.08.005

• Atom probe tomography
• Tomographic reconstruction
• Reconstruction parameters

Progress in the reconstruction for atom probe tomography has been limited since the first implementation of the protocol proposed by Bas et al. in 1995. This approach and those subsequently developed assume that the geometric parameters used to build the three-dimensional atom map are constant over the course of an analysis. Here, we test this assumption within the analyses of low-alloyed materials. By building upon methods recently proposed to measure the tomographic reconstruction parameters, we demonstrate that this assumption can introduce significant limitations in the accuracy of the analysis. Moreover, we propose a strategy to alleviate this problem through the implementation of a new reconstruction algorithm that dynamically accommodates variations in the tomographic reconstruction parameters.

• 出版日期2011-11