1. Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802 (USA)
2. Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, IL 60439 (USA)
3. X‐ray Science Division, Argonne National Laboratory, Argonne, IL 60439 (USA)
4. National Energy Technology Laboratory, United States Department of Energy, Pittsburgh, PA 15236 (USA)