学術雑誌論文

学術雑誌論文

text

Journal of Applied Physics. 2010, 107(3), p. 033507

Electronic and ionic contributions to the constant-volume specific heat of carbon tetrachloride shocked at pressures up to 23 GPa

American Institute of Physics

英語

text

2010-02-02

https://doi.org/10.1063/1.3294963

Yukio Sano, Tomokazu Sano, and Shinichi Nagata, Journal of Applied Physics 107(3), 033507 (2010) https://doi.org/10.1063/1.3294963

For carbon tetrachloride, a temperature Hugoniot at 7-23 GPa and a distribution of the constant-volume specific heat on the Hugoniot C V(T) at 1057-3275 K are simultaneously estimated from the Walsh-Christian (WC) equation such that the Hugoniot fits well to the existing measured data. The estimated CV(T) distribution reveals the significance of the contribution of electrons and ions to the specific heat. That is, in contrast to the almost uniform distribution of the specific heat predicted from the Debye equation, the CV(T) distribution increases significantly with an increase in the Hugoniot temperature due to thermal excitation of electrons at 1057-1500 K (7-10.1 GPa), additional activation of the dimerization reaction at 1500-2350 K (10.1-16 GPa), and also additional activation of the polymerization reaction at 2350-3275 K (16-23 GPa). As an example, evidence is presented that carbon tetrachloride is a semiconductor at 1500 K. The CV(T) distribution in each temperature range is formulated and a temperature Hugoniot is reevaluated from the WC equation using the specific heat equations formulated. It is confirmed by a good fit of the reevaluated Hugoniot to the existing measured data that the specific heat equations express the CV(T) distribution appropriately. © 2010 American Institute of Physics.

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Yukio Sano, Tomokazu Sano, and Shinichi Nagata, "Electronic and ionic contributions to the constant-volume specific heat of carbon tetrachloride shocked at pressures up to 23 GPa", Journal of Applied Physics 107(3), 033507, 2010 and may be found at https://doi.org/10.1063/1.3294963.

89436

Electronic and ionic contributions to the constant-volume specific heat of carbon tetrachloride shocked at pressures up to 23 GPa

American Institute of Physics

英語

2010-02-02

Journal of Applied Physics

107

3

033507

https://doi.org/10.1063/1.3294963

https://hdl.handle.net/11094/89436