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How far away are accurate equations of state determinations?: Some issues on pressure scales and non-hydrostaticity in diamond anvil cells
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Mineralogy Petrology and Tectonics. China Acad Engn, Inst Fluid Phys, Natl Key Lab Shock Wave & Detonat Phys, Mianyang 621900, Peoples R China;Uppsala Univ, Dept Earth Sci, SE-75236 Uppsala, Sweden.
China Acad Engn, Inst Fluid Phys, Natl Key Lab Shock Wave & Detonat Phys, Mianyang 621900, Peoples R China.
2016 (English)In: MATTER AND RADIATION AT EXTREMES, ISSN 2468-2047, Vol. 1, no 4, p. 224-236Article in journal (Refereed) Published
Abstract [en]

The equations of state (EOSs) of materials are the cornerstone of condensed matter physics, material science, and geophysics. However, acquiring an accurate EOS in diamond anvil cell (DAC) experiments continues to prove problematic because the current lack of an accurate pressure scale with clarified sources of uncertainty makes it difficult to determine a precise pressure value at high pressure, and non-hydrostaticity affects both the volume and pressure determination. This study will discuss the advantages and drawbacks of various pressure scales, and propose an absolute pressure scale and correction methods for the effects of non-hydrostaticity. At the end of this paper, we analyze the accuracy of the determined EOS in the DAC experiments we can achieve to date. Copyright (C) 2016 Science and Technology Information Center, China Academy of Engineering Physics. Production and hosting by Elsevier B.V.

Place, publisher, year, edition, pages
AIP PUBLISHING LLC , 2016. Vol. 1, no 4, p. 224-236
Keywords [en]
Equation of state, Pressure scale, Nonhydrostaticity effect, Diamond anvil cell
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:uu:diva-400378DOI: 10.1016/j.mre.2016.06.002ISI: 000447468600006OAI: oai:DiVA.org:uu-400378DiVA, id: diva2:1381117
Available from: 2019-12-20 Created: 2019-12-20 Last updated: 2019-12-20Bibliographically approved

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