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Carnegie Institution of Washington

3 ARTICLES PUBLISHED IN JoVE

Engineering

Synthesis and Microdiffraction at Extreme Pressures and Temperatures

Barbara Lavina¹, Przemyslaw Dera², Yue Meng³

¹High Pressure Science and Engineering Center, Department of Physics and Astronomy, University of Nevada, Las Vegas, ²GeoSoilEnviroCARS, University of Chicago, ³High Pressure Collaborative Access Team, Carnegie Institution of Washington

The laser heated diamond anvil cell combined with synchrotron micro-diffraction techniques allows researchers to explore the nature and properties of new phases of matter at extreme pressure and temperature (PT) conditions. Heterogeneous samples can be characterized in situ under high pressure by 2D mapping and combined powder, single-crystal and multigrain diffraction approaches.

Engineering

Simulation of the Planetary Interior Differentiation Processes in the Laboratory

Yingwei Fei¹

¹Geophysical Laboratory, Carnegie Institution of Washington

The high-pressure and high-temperature experiments described here mimic planet interior differentiation processes. The processes are visualized and better understood by high-resolution 3D imaging and quantitative chemical analysis.

JoVE Journal

Metal-silicate Partitioning at High Pressure and Temperature: Experimental Methods and a Protocol to Suppress Highly Siderophile Element Inclusions

Neil R. Bennett^1,2, James M. Brenan¹, Yingwei Fei²

¹Department of Earth Science, University of Toronto, ²Geophysical Laboratory, Carnegie Institution of Washington

We present a procedure to determine the metal-silicate partitioning of siderophile elements, emphasizing techniques that suppress the formation of metal inclusions in experiments for the noble metals. The results of these experiments are used to demonstrate the effect of core-formation on the highly siderophile element composition of the mantle.