Experimental study on physical properties of minerals at the lowermost mantle conditions by means of Kawai-type apparatus

2014 Fiscal Year Final Research Report

• Project/Area Number: 22224008
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Solid earth and planetary physics
• Research Institution: Okayama University
• Principal Investigator: YONEDA Akira 岡山大学, 地球物質科学研究センター, 准教授 (10262841)
• Co-Investigator(Kenkyū-buntansha): ITO Eiji 岡山大学, 地球物質科学研究センター, 客員研究員 (00033259) ; YAMAZAKI Daisuke 岡山大学, 地球物質科学研究センター, 准教授 (90346693) ; YOSHINO Takashi 岡山大学, 地球物質科学研究センター, 准教授 (30423338) ; TOMIOKA Naotaka 岡山大学, 地球物質科学研究センター, 准教授 (30335418) ; TSUJINO Noriyoshi 岡山大学, 地球物質科学研究センター, 助教 (20633093)
• Co-Investigator(Renkei-kenkyūsha): OSAKO Masahiro 国立科学博物館, 理工学研究部, 名誉研究員 (60132693)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: 川井型装置 / 焼結ダイヤモンド / 下部マントル / D"層 / ポストペロブスカイト / ブリッジマナイト / 半導体ダイヤモンド / 非弾性X線散乱

Outline of Final Research Achievements

The HGP at ISEI reproduced core mantle boundary (CMB) condition in the SD-KMA for experiments. The SD-KMA is superior to DACs for quantitative studies because of its much larger (~1,000 ×) cell volume. Some studies, such as grain growth, diffusion, and phase relationships, can only be conducted reliably and with reproducibility in the SD-KMA. Another imporatant contribution is to measure thermal conductivity of pyroxenes under high temperature and high pressures.The other aspect of this project is the study of the elasticity of MgSiO3 perovskite and Post-perovskite.

Free Research Field

地球深部物質科学