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X射线自由电子激光在化学与能源材料科学中的应用

Applications of femtosecond X-ray techniques in chemistry and energy materials science

  • 摘要: 在过去的十多年中,X射线自由电子激光器(X-ray Free Electron Laser,XFEL)的成功研制和快速发展,极大地推动了超快X射线光谱学实验技术的发展,并且在物理、化学和生物科学等不同研究领域获得了广泛的应用。通过飞秒激光脉冲对样品的激发,X射线可以在不同时间尺度下,跟踪固态、液态和气态等各种情况下样品的微观结构动力学过程。X射线吸收和发射光谱,衍射和散射是探测激光诱导结构变化的典型工具。文章将介绍近年来飞秒X射线技术的发展,及其在化学与能源材料领域的应用。相信随着上海X射线自由电子激光器的建成,将使得飞秒X射线技术在更多的科学领域发挥作用。

     

    Abstract: The rapid development and realization of X-ray Free Electron Laser (XFEL) has advanced the femtosecond X-ray science in many research fields including physics, chemistry,materials science and structural molecular biology. By using the Optical pump/X-ray probe technique, one can track the dynamics of the system at varying timescale upon the excitation. X-ray absorption and emission spectroscopies, X-ray diffraction and scattering are typical X-ray techniques for probing the dynamic changes in electronic and geometric structures. Here we summarized the recent progresses of femtosecond X-ray science in chemistry.

     

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