兆赫兹重复频率下对液体进行透射模式的时间分辨软X射线吸收光谱分析。
Time-resolved soft X-ray absorption spectroscopy in transmission mode on liquids at MHz repetition rates.
作者信息
Fondell Mattis, Eckert Sebastian, Jay Raphael M, Weniger Christian, Quevedo Wilson, Niskanen Johannes, Kennedy Brian, Sorgenfrei Florian, Schick Daniel, Giangrisostomi Erika, Ovsyannikov Ruslan, Adamczyk Katrin, Huse Nils, Wernet Philippe, Mitzner Rolf, Föhlisch Alexander
机构信息
Institute for Methods and Instrumentation for Synchrotron Radiation Research, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489 Berlin, Germany.
Institut für Physik und Astronomie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476 Potsdam, Germany.
出版信息
Struct Dyn. 2017 Aug 14;4(5):054902. doi: 10.1063/1.4993755. eCollection 2017 Sep.
We present a setup combining a liquid flatjet sample delivery and a MHz laser system for time-resolved soft X-ray absorption measurements of liquid samples at the high brilliance undulator beamline UE52-SGM at Bessy II yielding unprecedented statistics in this spectral range. We demonstrate that the efficient detection of transient absorption changes in transmission mode enables the identification of photoexcited species in dilute samples. With iron(II)-trisbipyridine in aqueous solution as a benchmark system, we present absorption measurements at various edges in the soft X-ray regime. In combination with the wavelength tunability of the laser system, the set-up opens up opportunities to study the photochemistry of many systems at low concentrations, relevant to materials sciences, chemistry, and biology.
我们展示了一种装置，它将液体平面射流样品输送系统与一个兆赫兹激光系统相结合，用于在柏林电子储存环二期（Bessy II）的高亮度波荡器光束线UE52-SGM上对液体样品进行时间分辨软X射线吸收测量，在此光谱范围内产生了前所未有的统计数据。我们证明，在透射模式下对瞬态吸收变化的有效检测能够识别稀溶液样品中的光激发物种。以水溶液中的铁（II）-三联吡啶作为基准系统，我们展示了在软X射线区域各个边缘的吸收测量结果。结合激光系统的波长可调谐性，该装置为研究许多低浓度系统的光化学提供了机会，这些系统与材料科学、化学和生物学相关。
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