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Ramp compression of magnesium oxide to 234 GPa

Author(s): Wang, Jue; Smith, Raymond F; Coppari, Federica; Eggert, Jon H; Boehly, Thomas R; et al

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Abstract: Single-crystal magnesium oxide (MgO) samples were ramp compressed to above 200 GPa pressure at the Omega laser facility. Multi-stepped MgO targets were prepared using lithography and wet etching techniques. Free surface velocities of ramp-compressed MgO were measured with a VISAR. The sound velocity and stress-density response were determined using an iterative Lagrangian analysis. The measured equation of state is consistent with expectations from previous shock and static data as well as with a recent X-ray diffraction measurement under ramp loading. The peak elastic stresses observed in our samples have amplitudes of 3–5.5 GPa, decreasing with propagation distance.
Publication Date: 7-May-2014
Citation: Wang, Jue, R. F. Smith, F. Coppari, J. H. Eggert, T. R. Boehly, G. W. Collins, and T. S. Duffy. "Ramp compression of magnesium oxide to 234 GPa." In Journal of Physics: Conference Series, IOP Publishing Ltd., vol. 500, no. 6 (2014): 062002. doi:10.1088/1742-6596/500/6/062002.
DOI: doi:10.1088/1742-6596/500/6/062002
ISSN: 1742-6588
EISSN: 1742-6596
Pages: 062002
Language: English
Type of Material: Conference Article
Journal/Proceeding Title: Journal of Physics: Conference Series
Version: Final published version. This is an open access article.

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