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Shock compression of preheated molybdenum to 300 GPa

Sun, Daoyuan and Ahrens, Thomas J. and Asimow, Paul D. (2009) Shock compression of preheated molybdenum to 300 GPa. Physics of the Earth and Planetary Interiors, 174 (1-4). pp. 302-308. ISSN 0031-9201. doi:10.1016/j.pepi.2008.08.004.

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Shock compression experiments on samples at elevated initial temperature provide a test of the Mie-Grüneisen method of predicting off-principal Hugoniot states. Pure molybdenum, preheated to 1673 K, was shocked to peak pressures up to 300 GPa, double the compression range previously studied for this material at elevated temperature. The data lie strictly below the cold Hugoniot of Mo in shock velocity vs. particle velocity space, with some downward curvature. Previous approximations and extrapolations from lower-compression data fail to match these results, but the data are well fit by a Mie-Grüneisen correction to the cold Hugoniot. However, the data are insufficiently precise and the phases obtained in the shock experiments too uncertain to discriminate among different functional forms of the density dependence of the Grüneisen parameter.

Item Type:Article
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URLURL TypeDescription
Sun, Daoyuan0000-0003-4461-4664
Asimow, Paul D.0000-0001-6025-8925
Additional Information:© 2008 Elsevier B.V. Received 26 September 2007; revised 14 July 2008; accepted 4 August 2008. Available online 15 August 2008. The expert technical assistance of Michael Long, Eprapodito Gelle, and Russel Oliver is appreciated, as always. This work was supported by the U.S. National Science Foundation through grant EAR-0609804. PDA also gratefully acknowledges travel support from NSF for attending the HPMPS-7 conference in Matsushima, Japan.
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Subject Keywords:Hugoniot; Mie-Grüneisen equation of state; Grüneisen parameter; Metals; Shock impedance standards
Issue or Number:1-4
Record Number:CaltechAUTHORS:20090701-113819858
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:14475
Deposited By: Jason Perez
Deposited On:12 Aug 2009 18:19
Last Modified:08 Nov 2021 23:12

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