Sulphur in the Earth's core: Sound velocities of Fe-S alloys at extreme conditions

Name: Sulphur in the Earth's core: Sound velocities of Fe-S alloys at extreme conditions
Creator: RPTU Kaiserslautern-Landau, Institut für naturwissenschaftliche Bildung, Fortstraße 7, 76829, Landau in der pfalz, GERMANY; ESRF, 71 avenue des Martyrs CS 40220, 38043, Grenoble, FR; Georg August Universitaet Goettingen, Institut für Anorganische Chemie, Tammannstrasse 4, 37077, Goettingen, GERMANY
Published: 2028-01-01 00:00:00
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ESRF Portal2028-01-01 更新2026-04-23 收录

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https://doi.esrf.fr/10.15151/ESRF-ES-2255549337

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In this experiment, we aim to investigate the sound velocities as well as the Equation of State (EOS) of Fe-S alloys at pressures above 300 GPa and temperatures up to several thousands of degrees. Therefore, nuclear inelastic scattering (NIS) and 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 Sulphur in the Earth’s core, to explain its observed seismic parameters.

提供机构：

RPTU Kaiserslautern-Landau, Institut für naturwissenschaftliche Bildung, Fortstraße 7, 76829, Landau in der pfalz, GERMANY; ESRF, 71 avenue des Martyrs CS 40220, 38043, Grenoble, FR; Georg August Universitaet Goettingen, Institut für Anorganische Chemie, Tammannstrasse 4, 37077, Goettingen, GERMANY

创建时间：

2028-01-01