High-pressure rotational deformation apparatus to 135 GPa

Ryuichi Nomura; Shintaro Azuma; Kentaro Uesugi; Yuki Nakashima; Tetsuo Irifune; Toru Shinmei; Sho Kakizawa; Yohei Kojima; Hirokazu Kadobayashi

doi:10.1063/1.4979562

High-pressure rotational deformation apparatus to 135 GPa

Rev Sci Instrum. 2017 Apr;88(4):044501. doi: 10.1063/1.4979562.

Authors

Ryuichi Nomura¹, Shintaro Azuma², Kentaro Uesugi³, Yuki Nakashima⁴, Tetsuo Irifune¹, Toru Shinmei¹, Sho Kakizawa¹, Yohei Kojima¹, Hirokazu Kadobayashi¹

Affiliations

¹ Geodynamics Research Center, Ehime University, 2-5 Bunkyo, Matsuyama, Ehime 790-8577, Japan.
² Department of Earth and Planetary Sciences, Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395, Japan.
³ Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan.
⁴ Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8550, Japan.

PMID: 28456273
DOI: 10.1063/1.4979562

Abstract

A large-strain, torsional deformation apparatus has been developed based on diamond anvil cells at high pressures, up to 135 GPa with a help of hard nano-polycrystalline diamond anvils. These pressure conditions correspond to the base of the Earth's mantle. An X-ray laminography technique is introduced for high-pressure in situ 3D observations of the strain markers. The technique developed in this study introduces the possibility of the in situ rheological measurements of the deep Earth materials under ultrahigh-pressure conditions.