2026-06-13T06:11:53Z
https://icatplus.esrf.fr/oaipmh/request
oai:icatplus.esrf.fr:inv/2041047529
2025-04-12T06:00:30.172Z
4.2
EI
10.15151/ESRF-ES-2041047529
Giacomo CRINITI
Giacomo
Criniti
0000-0002-9414-523X
Giacomo CRINITI
Giacomo
Criniti
0000-0002-9414-523X
Lola PERRUCHON-MONGE
Lola
Perruchon-Monge
JOAO ELIAS FIGUEIREDO SOARES RODRIGUES
Joao Elias
Figueiredo Soares Rodrigues
0000-0002-9220-5809
Lola PERRUCHON-MONGE
Lola
Perruchon-Monge
Silvia BOCCATO
Silvia
Boccato
0000-0002-0613-8276
Silvia BOCCATO
Silvia
Boccato
0000-0002-0613-8276
Daniele ANTONANGELI
Daniele
Antonangeli
0000-0002-4952-5700
Daniele ANTONANGELI
Daniele
Antonangeli
0000-0002-4952-5700
Yingwei FEI
Yingwei
Fei
0000-0001-9955-5353
Yingwei FEI
Yingwei
Fei
0000-0001-9955-5353
Alexandre F GONTCHAROV
Alexandre F
Gontcharov
0000-0002-6422-8819
Alexandre F GONTCHAROV
Alexandre F
Gontcharov
0000-0002-6422-8819
Paraskevas PARISIADIS
Paraskevas
Parisiadis
0000-0001-6962-264X
Paraskevas PARISIADIS
Paraskevas
Parisiadis
0000-0001-6962-264X
Establishing reference density profiles of the Earth’s inner core
Example Institute
2028
Data from large facility measurement
2025-04-08T06:00:00Z/2025-04-12T06:00:00Z
2025-04-12T06:00:00Z
I
CC-BY-4.0
The goal of this proposal is to establish density profiles of the Earth’s inner core by determining equations of state (EOS) of iron alloys at inner core conditions. The inner core has 3-4% density deficit compared with density of pure Fe. Interpretation of the density deficit requires accurate density measurements of the candidate Fe alloys at pressure and temperature conditions of the inner core. Following our successful compression experiments at ESRF (ES-1441) at inner-core pressures, we will focus on determination of thermal EOS of Fe and Fe-alloys up to 365 GPa and 3500 K. The proposed experiments include thermal EOS of pure Fe, Fe-1.37wt%C, Fe-4wt%Si, and a ternary Fe alloy, Fe-1wt%C-3wt%Si. The results will be direct compared with the observed core density that will allow a determination of the composition of the inner core. It is expected that we will need at least 12 shifts to complete the proposed project.