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|Title:||Data for: "Structure and Density of Silicon Carbide to 1.5 TPa and Implications for Extrasolar Planets"|
|Contributors:||Smith, Raymond F.|
Ocampo, Ian K.
Marshall, Michelle C.
Ginnane, Mary Kate
Wicks, June K.
Tracy, Sally J.
Rygg, Jame R.
Eggert, Jon H.
Duffy, Thomas S.
|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.|
|Appears in Collections:||Research Data Sets|
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|pulse_shapes.xlsx||331.33 kB||Microsoft Excel XML||View/Download|
|XRD_data.xlsx||140.23 kB||Microsoft Excel XML||View/Download|
|VISAR_data.xlsx||455.38 kB||Microsoft Excel XML||View/Download|
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