Three-Dimensional Coherent X-Ray Diffraction Imaging of Molten Iron in Mantle Olivine at Nanoscale Resolution
Year: 2013
Type: article
Abstract: We report quantitative 3D coherent x-ray diffraction imaging of a molten Fe-rich alloy and crystalline olivine sample, synthesized at 6 GPa and 1800 °C, with nanoscale resolution. The 3D mass density map is determined and the 3D distribution of the Fe-rich and Fe-S phases in the olivine-Fe-S sample is observed. Our results indicate that the Fe-rich melt exhibits varied 3D shapes and sizes in the olivine matrix. This work has potential for not only improving our understanding of the complex interactions between Fe-rich core-forming melts and mantle silicate phases but also paves the way for quantitative 3D imaging of materials at nanoscale resolution under extreme pressures and temperatures.
Source: Physical Review Letters
Institutions: Shandong University, State Key Laboratory of Crystal Materials, California NanoSystems Institute, University of California, Los Angeles, Carnegie Institution for Science, Geophysical Laboratory, SPring-8, RIKEN, Chinese Academy of Sciences, Shanghai Institute of Applied Physics, SLAC National Accelerator Laboratory, Stanford University
Language: English
Subfield: Radiation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2335392928