hydrogen diffusion dynamics of deep-Earth hydrous minerals by quasielastic neutron scattering

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K13593
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Petrology/Mineralogy/Economic geology
• Research Institution: Okayama University
• Principal Investigator: Okuchi Takuo 岡山大学, 惑星物質研究所, 准教授 (40303599)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 中性子準弾性散乱 / 水素拡散ダイナミクス / 含水鉱物

Outline of Final Research Achievements

In the evolution of the earth, hydrogen plays many important roles. Hydrogen can be transported within minerals in a fast manner. A small amount of hydrogen dissolves into crystal structures of minerals which greatly changes many physical properties of them; these behaviors are distinctly different from the other elements. These phenomena are understood and predicted by finding atomic-scale diffusion dynamics process of hydrogen in the mineral media. Here we have applied quasielastic neutron scattering for first successfully analyzing the atomic-scale dynamics of hydrogen with the crystal structures of hydrous minerals.

Free Research Field

高圧実験、鉱物学