Hydrogen in the Earth’s core: Sound velocities of hydrogen bearing Fe-Si-alloys at extreme conditions
收藏ESRF Portal2028-01-01 更新2026-04-23 收录
下载链接：
https://doi.esrf.fr/10.15151/ESRF-ES-2020725532
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资源简介：
In this experiment, we aim to investigate the density as well as the electronic, elastic and thermodynamic properties of hydrogen-bearing Fe-Si-alloys at pressures above 300 GPa and temperatures up to several thousands of degrees. Therefore, nuclear inelastic scattering (NIS) and powder x-ray diffraction (XRD) are planned to be used. Applying the NIS technique brings the advantage of studying the lattice dynamics in order to gain the thermodynamic sample characterization. The measured phonon density of states provides the average Debye phonon velocity (vD), which is necessary to calculate the compressional (vp) and shear velocity (vs) of the material, in combination with the density and bulk modulus obtained by XRD. The measurements and following calculations will allow us to refine the amount of hydrogen and silicon in the Earth’s core, to explain its observed seismic parameters.
提供机构：
University of Muenster, Institut für Mineralogie, Corrensstrasse 24, 48149 Muenster, Germany; ESRF, 71 avenue des Martyrs, CS 40220, 38043 Grenoble Cedex 9, France; ESRF, 71 avenue des Martyrs CS 40220, 38043, Grenoble, FR
创建时间：
2028-01-01
