Shock compression of Fe-FeS mixture up to 204 GPa

被引：29

作者：

Huang, Haijun ^{[1
]}

Wu, Shijie ^{[1
]}

Hu, Xiaojun ^{[1
]}

Wang, Qingsong ^{[2
]}

Wang, Xiang ^{[2
]}

Fei, Yingwei ^{[3
]}

机构：

[1] Wuhan Univ Technol, Sch Sci, Wuhan 430070, Hubei, Peoples R China

[2] China Acad Engn Phys, Natl Key Lab Shock Wave & Detonat Phys, Inst Fluid Phys, Mianyang 621900, Sichuan, Peoples R China

[3] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2013年 / 40卷 / 04期

基金：

中国国家自然科学基金; 美国国家科学基金会;

关键词：

HIGH-PRESSURE; CHEMICAL-COMPOSITION; HUGONIOT DATA; OUTER CORE; CONSTRAINTS; EARTH; STATE;

D O I：

10.1002/grl.50180

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Using a two-stage light gas gun, we obtained new shock wave Hugoniot data for an iron-sulfur alloy (Fe-11.8wt%S) over the pressure range of 94-204 GPa. A least-squares fit to the Hugoniot data yields a linear relationship between shock velocity D-S and particle velocity u, D-S (km/s) = 3.60(0.14) + 1.57(0.05) u. The measured Hugoniot data for Fe-11.8wt%S agree well with the calculated results based on the thermodynamic parameters of Fe and FeS using the additive law. By comparing the calculated densities along the adiabatic core temperature with the PREM density profile, an iron core with 10 wt.% sulfur (S) provides the best solution for the composition of the Earth's outer core. Citation: Huang, H., S. Wu, X. Hu, Q. Wang, X. Wang, and Y. Fei (2013), Shock compression of Fe-FeS mixture up to 204 GPa, Geophys. Res. Lett., 40, 687-691, doi:10.1002/grl.50180.

引用

页码：687 / 691

页数：5

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