Opendata, web and dolomites


Planetary diversity: the experimental terapascal perspective

Total Cost €


EC-Contrib. €






 PLANETDIVE project word cloud

Explore the words cloud of the PLANETDIVE project. It provides you a very rough idea of what is the project "PLANETDIVE" about.

static    si    rocky    radius    silicates    sic    assumed    mass    orbiting    benchmarking    components    carbides    earth    ray    metals    alloys    differentiated    curves    temperature    planets    breakthroughs    synchrotron    cores    core    seem    pressure    exoplanets    tpa    giant    combined    discovery    equations    planetary    objects    fe    metallic    laser    mantle    sio2    anvil    made    rests    possibly    poorly    unprecedented    heated    diverse    mgsio3    predicted    heavy    existence    decades    mgo    model    stars    diagrams    relationships    mbar    experimental    experiments    extra    oxides    generalized    terapascal    description    gaseous    references    cells    sources    infer    extrapolated    xfel    relations    questions    relationship    supercritical    compression    calibrated    astronomy    pressures    universe    originally    silicate    masses    surrounded    concerning    compositions    fundamental    iron    surfaces    melting    sio3    coupled    solar    combination    diamond    mg    volatile    liquid   

Project "PLANETDIVE" data sheet

The following table provides information about the project.


Organization address
address: RUE MICHEL ANGE 3
city: PARIS
postcode: 75794

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Project website
 Total cost 3˙498˙938 €
 EC max contribution 3˙498˙938 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2014-ADG
 Funding Scheme ERC-ADG
 Starting year 2016
 Duration (year-month-day) from 2016-01-01   to  2020-12-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

The discovery of extra-solar planets orbiting other stars has been one of the major breakthroughs in astronomy of the past decades. Exoplanets are common objects in the universe and planetary systems seem to be more diverse than originally predicted. The use of radius-mass relationships has been generalized as a means for understanding exoplanets compositions, in combination with equations of state of main planetary components extrapolated to TeraPascal (TPa) pressures.

In the most current description, Earth-like planets are assumed to be fully differentiated and made of a metallic core surrounded by a silicate mantle, and possibly volatile elements at their surfaces in supercritical, liquid or gaseous states. This model is currently used to infer mass-radius relationship for planets up to 100 Earth masses but rests on poorly known equations of states for iron alloys and silicates, as well as even less known melting properties at TPa pressures.

This proposal thus aims at providing experimental references for equations of state and melting properties up to TPa pressure range, with the combined use of well-calibrated static experiments (laser-heated diamond-anvil cells) and laser-compression experiments capable of developing several Mbar pressures at high temperature, coupled with synchrotron or XFEL X-ray sources. I propose to establish benchmarking values for the equations of states, phase diagrams and melting curves relations at unprecedented P-T conditions. The proposed experiments will be focused on simple silicates, oxides and carbides (SiO2, MgSiO3, MgO, SiC), iron alloys (Fe-S, Fe-Si, Fe-O, Fe-C) and more complex metals (Fe,Si,O,S) and silicates (Mg,Fe)SiO3. In this proposal, I will address key questions concerning planets with 1-5 Earth masses as well as fundamental questions about the existence of heavy rocky cores in giant planets.


year authors and title journal last update
List of publications.
2018 Guillaume Fiquet, Chandrabhas Narayana, Christophe Bellin, Abhay Shukla, Imène Estève, Art L. Ruoff, Gaston Garbarino, Mohamed Mezouar
Structural phase transitions in aluminium above 320 GPa
published pages: , ISSN: 1631-0713, DOI: 10.1016/j.crte.2018.08.006
Comptes Rendus Geoscience 2020-04-07
2018 Guillaume Morard, Silvia Boccato, Angelika D. Rosa, Simone Anzellini, Francesca Miozzi, Laura Henry, Gaston Garbarino, Mohamed Mezouar, Marion Harmand, François Guyot, Eglantine Boulard, Innokenty Kantor, Tetsuo Irifune, Raffaella Torchio
Solving Controversies on the Iron Phase Diagram Under High Pressure
published pages: , ISSN: 0094-8276, DOI: 10.1029/2018gl079950
Geophysical Research Letters 2020-04-07
2018 F. Miozzi, G. Morard, D. Antonangeli, A. N. Clark, M. Mezouar, C. Dorn, A. Rozel, G. Fiquet
Equation of State of SiC at Extreme Conditions: New Insight Into the Interior of Carbon-Rich Exoplanets
published pages: 2295-2309, ISSN: 2169-9097, DOI: 10.1029/2018JE005582
Journal of Geophysical Research: Planets 123/9 2020-04-07
2018 F. Seiboth, L. B. Fletcher, D. McGonegle, S. Anzellini, L. E. Dresselhaus-Cooper, M. Frost, E. Galtier, S. Goede, M. Harmand, H. J. Lee, A. L. Levitan, K. Miyanishi, B. Nagler, I. Nam, N. Ozaki, M. Rödel, A. Schropp, C. Spindloe, P. Sun, J. S. Wark, J. Hastings, S. H. Glenzer, E. E. McBride
Simultaneous 8.2 keV phase-contrast imaging and 24.6 keV X-ray diffraction from shock-compressed matter at the LCLS
published pages: 221907, ISSN: 0003-6951, DOI: 10.1063/1.5031907
Applied Physics Letters 112/22 2020-04-07
2018 Simone Anzellini, Annette K. Kleppe, Dominik Daisenberger, Michael T. Wharmby, Ruggero Giampaoli, Silvia Boccato, Marzena A. Baron, Francesca Miozzi, Dean S. Keeble, Allan Ross, Stuart Gurney, Jon Thompson, Giles Knap, Mark Booth, Lee Hudson, Dave Hawkins, Michael J. Walter, Heribert Wilhelm
Laser-heating system for high-pressure X-ray diffraction at the Extreme Conditions beamline I15 at Diamond Light Source
published pages: 1860-1868, ISSN: 1600-5775, DOI: 10.1107/s1600577518013383
Journal of Synchrotron Radiation 25/6 2020-04-07
2018 Eglantine Boulard, François Guyot, Nicolas Menguy, Alexandre Corgne, Anne-Line Auzende, Jean-Philippe Perrillat, Guillaume Fiquet
CO2-induced destabilization of pyrite-structured FeO2Hx in the lower mantle
published pages: 870-877, ISSN: 2095-5138, DOI: 10.1093/nsr/nwy032
National Science Review 5/6 2020-04-07
2019 E. Boulard, M. Harmand, F. Guyot, G. Lelong, G. Morard, D. Cabaret, S. Boccato, A. D. Rosa, R. Briggs, S. Pascarelli, G. Fiquet
Ferrous Iron Under Oxygen-Rich Conditions in the Deep Mantle
published pages: , ISSN: 0094-8276, DOI: 10.1029/2019gl081922
Geophysical Research Letters 2020-04-07

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