The Principal Hugoniot of Forsterite to 950 GPa

Root, S.; Townsend, J.P.; Davies, E.; Lemke, R. W.; Bliss, D.E.; Fratanduono, D.E.; Kraus, R.G.; Millot, M.; Spaulding, D.K.; Shulenburger, L.; Stewart, S.T.; Jacobsen, S.B.; Root, S; Townsend, J.P; Davies, E; Lemke, R. W; Bliss, D.E; Fratanduono, D.E; Kraus, R.G; Millot, M; Spaulding, D.K; Shulenburger, L; Stewart, S.T; Jacobsen, S.B

doi:10.1029/2017gl076931

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The Principal Hugoniot of Forsterite to 950 GPa

Root, S.; Townsend, J.P.; Davies, E.; Lemke, R. W.; Bliss, D.E.; Fratanduono, D.E.; Kraus, R.G.; Millot, M.; Spaulding, D.K.; Shulenburger, L.; Stewart, S.T.; Jacobsen, S.B.

Geophysical Research Letters 45(9): 3865-3872

2018

ISSN/ISBN: 0094-8276

DOI: 10.1029/2017gl076931
Accession: 088552766

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Summary

Forsterite (Mg2Si O4) single crystals were shock compressed to pressures between 200 and 950 GPa using independent plate-impact steady shocks and laser-driven decaying shock compression experiments. Additionally, we performed density functional theory-based molecular dynamics to aid interpretation of the experimental data and to investigate possible phase transformations and phase separations along the Hugoniot. We show that the experimentally obtained Hugoniot cannot distinguish between a pure liquid Mg2Si O4 and an assemblage of solid Mg O plus liquid magnesium silicate. The measured reflectivity is nonzero and increases with pressure, which implies that the liquid is a poor electrical conductor at low pressures and that the conductivity increases with pressure.

The Principal Hugoniot of Forsterite to 950 GPa

Root, S.; Townsend, J.P.; Davies, E.; Lemke, R. W.; Bliss, D.E.; Fratanduono, D.E.; Kraus, R.G.; Millot, M.; Spaulding, D.K.; Shulenburger, L.; Stewart, S.T.; Jacobsen, S.B.

Geophysical Research Letters 45(9): 3865-3872

2018

Full-Text Article emailed within 0-6 h

Summary

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