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Title: Ramp compression of magnesium oxide to 234 GPa

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 had amplitudes of 3-5.5 GPa, decreasing with propagation distance.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [3] ;  [2] ;  [1]
  1. Princeton Univ., Princeton, NJ (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Univ. of Rochester, Rochester, NY (United States)
Publication Date:
Grant/Contract Number:
NA0002154
Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Conference Series (Online)
Additional Journal Information:
Journal Name: Journal of Physics. Conference Series (Online); Journal Volume: 500; Journal Issue: 6; Journal ID: ISSN 1742-6596
Publisher:
Institute of Physics (IOP)
Research Org:
Princeton Univ., NJ (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES
OSTI Identifier:
1337782

Wang, Jue, Smith, R. F., Coppari, F., Eggert, J. H., Boehly, T. R., Collins, G. W., and Duffy, T. S.. Ramp compression of magnesium oxide to 234 GPa. United States: N. p., Web. doi:10.1088/1742-6596/500/6/062002.
Wang, Jue, Smith, R. F., Coppari, F., Eggert, J. H., Boehly, T. R., Collins, G. W., & Duffy, T. S.. Ramp compression of magnesium oxide to 234 GPa. United States. doi:10.1088/1742-6596/500/6/062002.
Wang, Jue, Smith, R. F., Coppari, F., Eggert, J. H., Boehly, T. R., Collins, G. W., and Duffy, T. S.. 2014. "Ramp compression of magnesium oxide to 234 GPa". United States. doi:10.1088/1742-6596/500/6/062002. https://www.osti.gov/servlets/purl/1337782.
@article{osti_1337782,
title = {Ramp compression of magnesium oxide to 234 GPa},
author = {Wang, Jue and Smith, R. F. and Coppari, F. and Eggert, J. H. and Boehly, T. R. and Collins, G. W. and Duffy, T. S.},
abstractNote = {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 had amplitudes of 3-5.5 GPa, decreasing with propagation distance.},
doi = {10.1088/1742-6596/500/6/062002},
journal = {Journal of Physics. Conference Series (Online)},
number = 6,
volume = 500,
place = {United States},
year = {2014},
month = {5}
}