In situ viscosity measurement of silicate melts under high pressure by X-ray photon correlation spectroscopy
| Project/Area Number |
17K18813
|
|---|
| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Earth and planetary science and related fields
|
|---|
| Research Institution | High Energy Accelerator Research Organization |
|---|
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)
|
|---|
| Project Period (FY) |
2017-06-30 – 2022-03-31
|
| Project Status |
Completed (Fiscal Year 2021)
|
| Budget Amount *help |
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
|---|
| Keywords | SiO2ガラス / 水ガラス / 非晶質 / 相転移カイネティクス / 静的圧縮 / 動的圧縮 / 相転移カイネティクスモデル / 粘性測定 / 小角X線散乱測定 / X線光子相関分光法 / 含水SiO2ガラス / 相転移ダイナミクスモデル / ケイ酸塩メルト / 小角X線散乱 / コヒーレントX線 / 超高圧 / マグマ / 粘性 |
|---|
| Outline of Final Research Achievements |
In this study, we obtained the following results on the dynamics of the water-silicate system.
For water glasses (Na2O-SiO2-H2O system), the origin of the characteristic low-Q diffraction peak, which is the key to understanding their structure, is the Na-Na correlation in Na2O-rich clusters. Upon pressurization up to several tens of thousands of atmospheres, the structure of water glasses becomes homogeneous and the peak disappears. A model is proposed for the phase transition kinetics of amorphous materials, formulated in terms of energy levels and activation energy ranges, which successfully reproduces various experimental data on the phenomenon of permanent densification of SiO2 glass.
|
| Academic Significance and Societal Importance of the Research Achievements |
マグマの振る舞いを理解する上で、水－ケイ酸塩系の混和－不混和の相転移は重要である。水ガラスに関する研究成果は、この相転移の際の構造変化に関する直接的な情報を与えるものである。また、マグマの振る舞いを理解する上で、液体の相転移ダイナミクスは重要である。非晶質の相転移カイネティクスに関する研究成果は、ガラスを対象としており、液体の相転移カイネティクスのモデルの検討に繋がるものである。
|
Report
(6 results)
Research Products
(47 results)
-
[Journal Article] Conceptual design of the Hybrid Ring with superconducting linac2022
Author(s)
Harada Kentaro、Funamori Nobumasa、Yamamoto Naoto、Shimosaki Yoshito、Shimada Miho、Miyajima Tsukasa、Umemori Kensei、Sakai Hiroshi、Nakamura Norio、Sakanaka Shogo、Kobayashi Yukinori、Honda Tohru、Nozawa Shunsuke、Nakao Hironori、Niwa Yasuhiro、Wakabayashi Daisuke、Amemiya Kenta、Igarashi Noriyuki
-
Journal Title
Journal of Synchrotron Radiation
Volume: 29
Issue: 1
Pages: 118-124
DOI
Related Report
Peer Reviewed / Open Access
-
-
-
-
-
[Journal Article] Effect of sulfur on sound velocity of liquid iron under Martian core conditions2020
Author(s)
Nishida, K., Shibazaki, Y., Terasaki, H., Higo, Y., Suzuki, A., Funamori, N., and Hirose, H.
-
Journal Title
Nature Communications
Volume: 11
Issue: 1
Pages: 1954-1954
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
