Laboratory-based x-ray computed tomography for 3D imaging of samples in a diamond anvil cell in situ at high pressures

Kenji Ohta; Tatsuya Wakamatsu; Manabu Kodama; Katsuyuki Kawamura; Shuichiro Hirai

doi:10.1063/5.0014486

Laboratory-based x-ray computed tomography for 3D imaging of samples in a diamond anvil cell in situ at high pressures

Rev Sci Instrum. 2020 Sep 1;91(9):093703. doi: 10.1063/5.0014486.

Authors

Kenji Ohta¹, Tatsuya Wakamatsu¹, Manabu Kodama², Katsuyuki Kawamura², Shuichiro Hirai²

Affiliations

¹ Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan.
² School of Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan.

PMID: 33003770
DOI: 10.1063/5.0014486

Abstract

Three-dimensional (3D) visualization of a material under pressure can provide a great deal of information about its physical and chemical properties. We developed a technique combining in-house x-ray computed tomography (XCT) and a diamond anvil cell to observe the 3D geometry of a sample in situ at high pressure with a spatial resolution of about 610 nm. We realized observations of the 3D morphology and its evolution in minerals up to a pressure of 55.6 GPa, which is comparable to the pressure conditions reported in a previous synchrotron XCT study. The new technique developed here can be applied to a variety of materials under high pressures and has the potential to provide new insights for high-pressure science and technology.