A fluorescence XAFS measurement instrument in the soft x-ray region toward observation under operando conditions

2014 Fiscal Year Final Research Report

• Project/Area Number: 25790059
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Thin film/Surface and interfacial physical properties
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: HONDA Mitsunori 独立行政法人日本原子力研究開発機構, 原子力科学研究部門 量子ビーム応用研究センター, 任期付研究員 (10435597)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: オペランド観測 / 蛍光XAFS / 軽元素 / 軟X線放射光

Outline of Final Research Achievements

X-ray absorption fine structure (XAFS) measurements are widely used for the analysis of electronic structure. Generally, XAFS in the soft X-ray region is measured under vacuum, but chemical structures under vacuum are typically different from those under operando conditions, where chemical species exhibit their function. Here we developed an XAFS measurement instrument, as a step toward operando fluorescent yield XAFS measurement using synchrotron radiation in the soft X-ray region. Our results show that this instrument aimed toward operando fluorescence XAFS measurements in the soft X-ray region is useful for structural analysis of sulfur atoms in organic molecules in air and in solution. The instrument will be applied to the structural analysis of materials containing elements that have absorption edges in soft X-ray region, such as phosphorus and alkali metals (potassium and cesium).

Free Research Field

放射光科学