Density and viscosity measurements of silicate melts under lower mantle conditions
| Project/Area Number |
25287111
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Partial Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Solid earth and planetary physics
|
|---|
| Research Institution | High Energy Accelerator Research Organization (2016-2017)
The University of Tokyo (2013-2015) |
|---|
Principal Investigator |
Funamori Nobumasa 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 教授 (70306851)
|
|---|
| Research Collaborator |
SATO Tomoko 広島大学, 大学院理学研究科, 准教授 (80553106)
WAKABAYASHI Daisuke 高エネルギー加速器研究機構, 物質構造科学研究所, 特別助教 (20759964)
|
|---|
| Project Period (FY) |
2013-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2013: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000)
|
|---|
| Keywords | SiO2ガラス / 剪断流動 / 相転移中間状態 / 高圧実験 / 小角X線散乱 / X線吸収微細構造分光 / X線回折 / ケイ酸塩メルト / 相転移 / 二相混合 / 中間状態 / 小角X線散乱測定 / 光学顕微鏡観察 / 液体ヨウ素 / 逆モンテカルロモデリング / SiO２ガラス / X線小角散乱 / X線吸収微細構造 / 超高圧物理学 / 固体地球物理学 / 下部マントル / ケイ酸塩ガラス / Ｘ線小角散乱 / 塑性流動 / 粘性 / 密度 / 圧力誘起相転移 / 静的圧縮 / 動的圧縮 |
|---|
| Outline of Final Research Achievements |
High-pressure in-situ optical microscopy and small-angle X-ray scattering of SiO2 glass pressurized in diamond-anvil cells have clarified that (1) the structural change of the glass is phase-transition-like and the intermediate state consists of subnanometer-scale domains for low-pressure and high-pressure phases and (2) the densified fourfold-coordinated phase shows a very large shear flow under differential stresses. Our newly developed apparatuses (e.g., simultaneous small-angle X-ray scattering and X-ray diffraction system for diamond-anvil cells) are now used by other groups at the Photon Factory of KEK. Several papers are already published by these groups.
|
Report
(6 results)
Research Products
(82 results)
-
-
-
-
-
-
-
[Journal Article] Towards a consensus on the pressure and composition dependence of sound velocity in the liquid Fe-S system2016
Author(s)
K. Nishida, A. Suzuki, H. Terasaki, Y. Shibazaki, Y. Higo, S. Kuwabara, Y. Shimoyama, M. Sakurai, M. Ushioda, E. Takahashi, T. Kikegawa, D. Wakabayashi, and N. Funamori
-
Journal Title
Physics of the Earth and Planetary Interiors
Volume: 257
Pages: 230-239
DOI
Related Report
Peer Reviewed / Open Access
-
-
-
[Journal Article] Stability of the liquid state of imidazolium-based ionic liquids under high pressure at room temperature2015
Author(s)
Y. Yoshimura, M. Shigemi, M. Takaku, M. Yamamura, T. Takekiyo, H. Abe, N. Hamaya, D. Wakabayashi, K. Nishida, N. Funamori, T. Sato, and T. Kikegawa
-
Journal Title
J. Phys. Chem. B
Volume: 119
Issue: 25
Pages: 8146-8153
DOI
Related Report
Peer Reviewed
-
-
[Journal Article] Muonium in stishovite: Implications for the possible existence of neutral atomic hydrogen in the Earth's deep mantle2015
Author(s)
N. Funamori, K. M. Kojima, D. Wakabayashi, T. Sato, T. Taniguchi, N. Nishiyama, T. Irifune, D. Tomono, T. Matsuzaki, M. Miyazaki, M. Hiraishi, A. Koda, and R. Kadono
-
Journal Title
Scientific Reports
Volume: 5
Issue: 1
Pages: 8437-8437
DOI
Related Report
Peer Reviewed / Open Access
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
