A new high-pressure deformation apparatus D111-type apparatus, which is a larger version of the deformation T-Cup, was recently installed on a synchrotron beamline NE7A at PF-AR, KEK, Tsukuba, Japan. In this apparatus, well-controlled deformation experiments can be conducted up to ~30 GPa by driving two opposed second-stage anvils in the Kawai-type multi-anvil assembly. High-pressure and high-temperature deformation experiments with quantitative stress and strain measurements have been carried out using the D111-type apparatus in conjunction with synchrotron radiation. Some studies have been conducted to investigate deep Earth rheology including rheology of hcp iron, rheology of bridgmanite and post-spinel, and olivine-ringwoodite phase transformation under deformation.
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