3D Spectroscopic x-Ray Imaging with Nanoscale Resolution at Extreme Conditions

Monday, 15 December 2014: 1:40 PM
Wendy L Mao1, Yu Lin1, Yijin Liu2, Crystal Yingxia Shi1 and Wenge Yang3, (1)Stanford-Geological & Env Sci, Stanford, CA, United States, (2)SLAC National Accelerator Laboratory, SSRL, Menlo Park, CA, United States, (3)Carnegie Inst-HPSynC, Argonne, IL, United States
Coupling nanoscale x-ray computed tomography (nanoXCT) with a diamond anvil cell has exciting potential as a powerful 3D probe for non-destructive imaging at high spatial resolution of multiple crystalline and amorphous phases which are synthesized under extreme conditions. The ability to also tune the incident energy range allows access elemental edges for spectroscopic imaging to map coordination and oxidation state, and provide quantitative composition information within the sample. Results from quenched high pressure-temperature experiments and in-situ high pressure measurements which illustrate the potential for this technique will be presented.