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

Sano, Yukio; Sano, Tomokazu; Nagata, Shinichi

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

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Identifier to cite or link to this item: https://hdl.handle.net/11094/89436

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Title
Electronic and ionic contributions to the constant-volume specific heat of carbon tetrachloride shocked at pressures up to 23 GPa
Creator
NRID
1000040029517 1000040029517
CreatorName
Sano, Yukio
NRID
1000030314371 1000030314371
ORCID
0000-0003-2624-5092 0000-0003-2624-5092
researchmap permalink
read0068627 read0068627
Scopus Author ID
7402240743 7402240743
CreatorName
Sano, Tomokazu
NRID
1000010108847 1000010108847
CreatorName
Nagata, Shinichi
Description
Yukio Sano, Tomokazu Sano, and Shinichi Nagata, Journal of Applied Physics 107(3), 033507 (2010) https://doi.org/10.1063/1.3294963
Abstract
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.
Publisher
American Institute of Physics
Source Title
Journal of Applied Physics
Volume (Issue)
107(3)
Page
033507
Date of Issued
2010-02-02
Language
English
Handle URL
https://hdl.handle.net/11094/89436
PISSN
00218979
eISSN
10897550
NCID
AA11868165
AA00693547
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1063/1.3294963
Access Rights
open access
CopyRight
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.
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Version of Record
Category
学術雑誌論文 Journal Article