Direct Determination of Pressure Scale of Ag and MgO by Measurement of high-temperature Hugoniot data

高温雨贡尼数据测量直接测定Ag和MgO的压标

• 批准号: 20340153
• 负责人: MASHIMO Tsutomu
• 金额: $ 11.4万
• 依托单位: Kumamoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20340153/
• 关键词: 超高圧; 衝撃圧縮; 圧力スケール; 地球内部; 金; ユゴニオ; 高温; 酸化マグネシウム

There remained an important problem of the discontinuousness at the boundary between upper and lower mantle and the bottom part of lower mantle. The reason why such investigation have not proceed is that the Hugoniot data and the analysis to high-temperature EOS are not sufficient. The purposes of this study are the Hugoniot measurements of room and elevated temperature samples to directly discuss pressure scale. In this study, we have measured the Hugoniot data of Au and MgO single crystals in the pressure region up to >200 GPa. We also measured the Hugoniot data of Cu, Ta, W high dense materials, which are also pressure-scale materials and used for the flyer plate and driver plate to perform the Hugoniot measurements without Losa Alamos data. The HEL' s of MgO single crystals were different for crystal axes, and Hugoniot data in the plastic region converged in high pressure region. The Hugoniot-measurement system of the elevated temperature sample using a high-frequency heating apparatus was established. The Hugoniot-measurement experiments of elevated temperature W and Au samples were performed.

上、下地幔边界和下地幔底部的不连续问题仍然存在。由于Hugoniot数据和对高温EOS的分析不够充分，导致此类调查未能继续进行。本研究的目的是通过对室温和高温样品的Hugoniot测量来直接讨论压力标度。在这项研究中，我们测量了Au和MgO单晶的Hugoniot数据，其压力区高达>200 GPa。我们还测量了Cu， Ta， W高密度材料的Hugoniot数据，这些材料也是压力尺度材料，用于飞行板和驱动板，在没有洛萨阿拉莫斯数据的情况下进行Hugoniot测量。MgO单晶的hels随晶轴不同而不同，塑性区Hugoniot数据在高压区收敛。利用高频加热装置建立了高温样品的于戈尼奥测量系统。对高温W和Au样品进行了于戈尼奥测量实验。

项目成果

Shock compression of synthetic opal

合成蛋白石的冲击压缩

• 发表时间: 2010
• 期刊: Journal of Physics : Conference Series (掲載確定)
• 作者: Agashev;A.M.;Pokhilenko;N.P.;Takazawa;E.;他4名;Akane Inoue
• 通讯作者: Akane Inoue

Measurement study of Hugoniot-compression curve of MgO singlecrystal

MgO单晶Hugoniot压缩曲线的测量研究

• 发表时间: 2009
• 作者: M.Murai;N.Kawayanagi;K.Tashiro;Y.Gomoto;L.Wei;T.Mashimo
• 通讯作者: T.Mashimo

一軸圧縮下におけるラセン転位挙動の分子動力学シミュレーション:KC1結晶の弾-塑性転移

单轴压缩下螺旋位错行为的分子动力学模拟：KC1晶体的弹塑性转变

• 发表时间: 2008
• 期刊: 材料 Vol.57(4)
• 作者: 木下貴博;河村雄行;真下茂
• 通讯作者: 真下茂

一軸圧縮下におけるラセン転位挙動の分子動力学シミュレーション : KC1結晶の弾-塑性転移

单轴压缩下螺旋位错行为的分子动力学模拟：KC1晶体的弹塑性转变

• 发表时间: 2008
• 期刊: 材料 57
• 作者: 木下貴博;河村雄行;真下茂;木下貴博
• 通讯作者: 木下貴博

Phase transition of Gd_3Ga_5O_<12> (GGG) under shock compression in 100 GPa to TPa regions

100 GPa 至 TPa 区域冲击压缩下 Gd_3Ga_5O_<12> (GGG) 的相变

• 发表时间: 2011
• 作者: K.Funakoshi;Y.Higo;Y.Nishihara;T.Irifune;H.Terasaki;N.Tsujino;T.Mashimo
• 通讯作者: T.Mashimo