Structure and density of silicon carbide to 1.5 TPa and implications for extrasolar planets

D. Kim (), R. F. Smith, I. K. Ocampo, F. Coppari, M. C. Marshall, M. K. Ginnane, J. K. Wicks, S. J. Tracy, M. Millot, A. Lazicki, J. R. Rygg, J. H. Eggert and T. S. Duffy
Additional contact information
D. Kim: Princeton University
R. F. Smith: Lawrence Livermore National Laboratory
I. K. Ocampo: Princeton University
F. Coppari: Lawrence Livermore National Laboratory
M. C. Marshall: University of Rochester
M. K. Ginnane: University of Rochester
J. K. Wicks: Johns Hopkins University
S. J. Tracy: Carnegie Institution for Science
M. Millot: Lawrence Livermore National Laboratory
A. Lazicki: Lawrence Livermore National Laboratory
J. R. Rygg: University of Rochester
J. H. Eggert: Lawrence Livermore National Laboratory
T. S. Duffy: Princeton University

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract There has been considerable recent interest in the high-pressure behavior of silicon carbide, a potential major constituent of carbon-rich exoplanets. In this work, the atomic-level structure of SiC was determined through in situ X-ray diffraction under laser-driven ramp compression up to 1.5 TPa; stresses more than seven times greater than previous static and shock data. Here we show that the B1-type structure persists over this stress range and we have constrained its equation of state (EOS). Using this data we have determined the first experimentally based mass-radius curves for a hypothetical pure SiC planet. Interior structure models are constructed for planets consisting of a SiC-rich mantle and iron-rich core. Carbide planets are found to be ~10% less dense than corresponding terrestrial planets.

Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-022-29762-y Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29762-y

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-022-29762-y

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().