Study of Creation and Freezing Mechanisms of High Energy Density Solid Stats

2014 Fiscal Year Final Research Report

• Project/Area Number: 22224012
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Plasma science
• Research Institution: Osaka University
• Principal Investigator: KODAMA Ryosuke 大阪大学, 工学(系)研究科(研究院), 教授 (80211902)
• Co-Investigator(Kenkyū-buntansha): OZAKI Norimasa 大阪大学, 工学研究科, 准教授 (70432515) ; SANO Tomokazu 大阪大学, 工学研究科, 准教授 (30314371) ; ARAKAWA Kazuto 島根大学, 総合理工学研究科, 准教授 (30294367)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: 高エネルギー密度 / パワーレーザー / 高圧物性 / 新物質材料 / 準安定相

Outline of Final Research Achievements

High-pressure compression and control technologies were developed with high-power lasers in a pressure range of Tera-Pa, which was unachievable with a conventional static compression technique. States of BC-8 structured Carbon and liquid-metallic Carbon were obtained with these technologies for the first time. Dynamical probing technologies were also established by using a radiation source with laser-plasmas and XFEL. These compression and probing techniques realized the investigation of details in the dynamics of the structure of matter under the high pressures, resulting in the complex and mixed structures of compressed-matter, never created with a static compression technique. Based on these results, creation of complex structures with different phases of matter, e.g. diamond and BC8 structures, and micro-mezzo mixed scales could be created in the compressed carbon created at Tera-Pa, which would lead to existing of quasi-stable high energy density matter at ambient pressures.

Free Research Field

光科学・プラズマ科学