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※ 半角英数字
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Advanced studies of hydrogen absorbing states using synchrotron radiation X-rays

放射光X線を利用した水素緒ぞ材料の先端的研究

町田 晃彦

Machida, Akihiko

SPring-8の放射光を利用して、水素とその周辺の原子との相互作用に着目し、水素吸蔵材料の構造や電子状態の研究を実施している。放射光X線は、水素化物又は水素吸蔵材料の物理的または化学的性質を調べるのに非常に有用である。SPrign-8においてわれわれはこれまでに水素吸蔵放出過程の研究に向けたその場観察装置やシステムの開発を実施してきた。例えば高輝度X線を利用することで高時間分解能での時分割測定が可能になるため、X線回折やX線吸収分光測定で水素吸蔵放出過程の時分割測定を試みた。これらの最新の測定結果を交え、構造や電子状態の放射光その場観察測定について紹介する。

Structural and electronic properties of hydrides and/or hydrogen storage materials have been investigated focusing on the interactions between hydrogen atoms and their surrounding atoms using synchrotron radiation (SR) X-rays at SPring-8, Japan. The SR X-rays become powerful and useful tools for studying the chemical and physical properties of hydrides and/or hydrogen storage materials. At SPring-8, the in-situ measurements apparatuses and systems have been developed and constructed to investigate the hydrogen absorbing/desorbing processes. For example, highly brilliant SR X-rays enable us to perform the time-resolved measurements with high time-resolution. Hence, high speed measurements on hydrogen absorbing and desorbing processes have been applied to X-ray diffraction and X-ray absorption measurements. My talk will cover the latest results on the SR studies of the structural and electronic properties of hydrides mainly using in-situ measurement systems.

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