高温高圧下の変形実験の最新技術

抄録

In this article, recent technical developments in high-pressure deformation experiments especially in the field of Earth science are reviewed. The diamond anvil cell has an advantage in performing deformation experiments at very high pressures (up to 160 GPa) compared to other large-volume apparatuses. However, diamond anvil cell has severe limitation in quantitative strain measurements, deformation at high temperatures and deformation with large strain. On the other hand, quantitative rheological measurements at relatively high pressures (up to 10-20 GPa) and high temperatures (up to 1000-2000 K) are possible by using recently developed large-volume deformation apparatuses, rotational Drickamer apparatus, deformation-DIA and “big D-DIA”. Synchrotron X-ray is a powerful tool for in-situ strain and stress measurements in high-pressure deformation experiments using these apparatuses.