Development of density measurement for metals at high pressures and high temperatures using X-ray absorption imaging combined with externally heated diamond anvil cell

Yusaku Takubo, Hidenori Terasaki, Tadashi Kondo, Shingo Mitai, Seiji Kamada, Takumi Kikegawa, Akihiko Machida

Research output: Contribution to journalArticle

Abstract

A technique for density measurement under high pressure and high temperature was developed using the X-ray absorption imaging method combined with an externally heated diamond anvil cell. The densities of solid and liquid In were measured in the pressure and temperature ranges of 3.2–18.6 GPa and 294–719 K. The densities obtained through the X-ray absorption imaging method were in good agreement (less than 2.0% difference)with those obtained through X-ray diffraction. Based on the measured density, the isothermal bulk modulus of solid In is determined as 48.0 ± 1.1−40.9 ± 0.8 GPa at 500 K, assuming K′ = 4 to 6. The compression curve of liquid In approaches that of solid In at higher pressures and does not cross over the solid compression curve in the measurement range. The present technique enables us to determine the densities of both solids and liquids precisely in a wide pressure and temperature range.

Original languageEnglish
Pages (from-to)182-189
Number of pages8
JournalComptes Rendus - Geoscience
Volume351
Issue number2-3
DOIs
Publication statusPublished - 2019 Feb 1

Keywords

  • Density
  • High pressure
  • Indium
  • Liquid metal

ASJC Scopus subject areas

  • Global and Planetary Change
  • Earth and Planetary Sciences(all)

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