Feasibility of Valence-to-Core X-ray Emission Spectroscopy for Tracking Transient Species
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- 作者：Anne Marie March ; Tadesse A. Assefa ; Christian Bressler ; Gilles Doumy ; Andreas Galler ; Wojciech Gawelda ; Elliot P. Kanter ; Zolt谩n N茅meth ; M谩ty谩s P谩pai ; Stephen H. Southworth ; Linda Young ; Gy枚rgy Vank贸
- 刊名：Journal of Physical Chemistry C
- 出版年：2015
- 出版时间：July 2, 2015
- 年：2015
- 卷：119
- 期：26
- 页码：14571-14578
- 全文大小：350K
- ISSN：1932-7455
文摘
X-ray spectroscopies, when combined in laser-pump, X-ray-probe measurement schemes, can be powerful tools for tracking the electronic and geometric structural changes that occur during the course of a photoinitiated chemical reaction. X-ray absorption spectroscopy (XAS) is considered an established technique for such measurements, and X-ray emission spectroscopy (XES) of the strongest core-to-core emission lines (K伪 and K尾) is now being utilized. Flux demanding valence-to-core XES promises to be an important addition to the time-resolved spectroscopic toolkit. In this paper we present measurements and density functional theory calculations on laser-excited, solution-phase ferrocyanide that demonstrate the feasibility of valence-to-core XES for time-resolved experiments. We discuss technical improvements that will make valence-to-core XES a practical pump鈥損robe technique.