Papers

Aug, 2015

Laser-shock compression of magnesium oxide in the warm-dense-matter regime

PHYSICAL REVIEW E
  • K. Miyanishi
  • ,
  • Y. Tange
  • ,
  • N. Ozaki
  • ,
  • T. Kimura
  • ,
  • T. Sano
  • ,
  • Y. Sakawa
  • ,
  • T. Tsuchiya
  • ,
  • R. Kodama

Volume
92
Number
2
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1103/PhysRevE.92.023103
Publisher
AMER PHYSICAL SOC

Magnesium oxide has been experimentally and computationally investigated in the warm-dense solid and liquid ranges from 200 GPa to 1 TPa along the principal Hugoniot. The linear approximation between shock velocity and particle velocity is validated up to a shock velocity of 15 km/s from the experimental data, this suggesting that the MgO B1 structure is stable up to the corresponding shock pressure of similar to 350 GPa. Moreover, our Hugoniot data, combined with ab initio simulations, show two crossovers between MgO Hugoniot and the extrapolation of the linear approximation line, occurring at a shock pressures of approximately 350 and 650 GPa, with shock temperatures of 8000 and 14 000 K, respectively. These crossover regions are consistent with the solid-solid (B1-B2) and the solid-liquid (B2-melt) phase boundaries predicted by the ab initio calculations.

Link information
DOI
https://doi.org/10.1103/PhysRevE.92.023103
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000359868100011&DestApp=WOS_CPL
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84939551659&origin=inward
ID information
  • DOI : 10.1103/PhysRevE.92.023103
  • ISSN : 1539-3755
  • eISSN : 1550-2376
  • SCOPUS ID : 84939551659
  • Web of Science ID : WOS:000359868100011

Export
BibTeX RIS