Postdoctoral Assignee - Improving High Energy Diffraction Microscopy Using Bragg Coherent Diffraction Imaging

The X-ray Science Division (XSD) at Argonne National Laboratory is seeking applications for a postdoctoral researcher position. This role involves the development of cutting-edge X-ray diffraction methods for 3-dimensional imaging. The successful applicant will enhance the spatial resolution of high-energy X-ray diffraction microscopy (HEDM)[1] at the Advanced Photon Source (APS), taking advantage of its high brilliance and coherence. This technique will be used to study irradiated materials. Over the past two decades, the APS 1-ID beamline has been a global leader in the development of high-energy X-ray imaging techniques. These techniques non-destructively yield data about the microstructure and micromechanical state of polycrystalline materials at the mesoscale. In collaboration with other ANL researchers, it has also proven the viability of high-energy Bragg Coherent Diffraction Imaging (HE-BCDI), which provides nanoscale information and will be considerably improved by the APS-Upgrade (APS-U) project. With the new High Energy X-ray Microscope (HEXM) beamline at 20-ID scheduled to go live as part of the APS-U in late April of 2024, we are looking for a postdoctoral researcher who will play a crucial part in further developing HE-BCDI and integrating it with HEDM. It is anticipated that this unified instrument at HEXM will be used to characterize polycrystalline materials and their hierarchical features, ranging from macroscopic to nanoscopic length scales. Specifically, we are interested in using this innovative instrument to understand how irradiation impacts material strength and the accumulation of damage. The individual in this position will cooperate with the Postdoctoral hire under Req 416675 and a multidisciplinary team of Argonne scientists from various divisions, including XSD, Materials Science Division, Nuclear Science and Engineering Division, and Applied Materials Division. Their task will be to construct a simulation-guided experimental framework capable of executing zoom-in/zoom-out capabilities to analyze the effect of irradiation on structural materials, guided by materials simulation. [1] https://www.osti.gov/biblio/1662034.