Temperature in molybdenum at high shock pressure: Experiment and theory

• Published in: Physica. B, Condensed matter Vol. 403; no. 18; pp. 3261 - 3265
• Main Authors: Zhang, Xiu-lu, Liu, Zhong-li, Gu, Yun-jun, Cai, Ling-cang, Jing, Fu-qian
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.09.2008; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; Equations of state of specific substances; Equations of state, phase equilibria, and phase transitions; Exact sciences and technology; High pressure; High-pressure and shock-wave effects in solids and liquids; Mechanical and acoustical properties of condensed matter; Molybdenum; Physics; Pyrometry experiment; Shock temperature; 05.70.Ce; 47.80.Fg; 82.40.Fp; Shock temperature; Pyrometry experiment; Molybdenum; 51.30.+i; High pressure; Pressure effects; Melting; Hugoniots; Pyrometry; Shock waves; Equations of state
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/j.physb.2008.04.012

Shock temperature of molybdenum is deduced to be 7853±813 K from release temperature at 374 GPa via pyrometry experiment. Theoretically, temperatures along the Hügoniot are calculated up to pressures of 500 GPa, over the shock melting pressure region, with contributions from electrons considered. At low pressures, the calculated results are consistent with NRS temperature measurements and pyrometry measurements, and accord with SESAME EOS and theoretical calculations taking the strength of the sample into account. At pressures above 100 GPa the results are much different from calculations without the contribution from the electrons, but consistent with the shock temperature deduced from experimental results in this work.