boundary
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Space & Cosmos
X-rays advance understanding of Earth’s core-mantle boundary and super-Earth magma oceans
Schematic diagram of the experimental setup available at the MEC end station. Four epiX 10k detectors cover the Q range from 15 to 106 nm-1 with an X-ray beam energy of 17 keV. The complete signal can be reconstructed by stitching together the diffuse scattering recorded by each detector. Credit: Nature Communications (2024). DOI: 10.1038/s41467-024-51796-7 Researchers at the Department of…
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Earth
Study identifies superionic iron hydride as key to ultra-low velocity zone at the boundary between Earth’s core and mantle
Mean square displacements (MSD) of Fe and H atoms in fcc-FeH at different temperatures and volumes from NVT-FPMD simulations. The core-mantle boundary (CMB) is a key boundary within the Earth, marking the boundary between the outer core and the lower mantle. Over the past two decades, seismological studies have identified anomalously low-velocity regions above the CMB, such as the Large-Scale…
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