Femtosecond Thomson scattering X-ray source based on laser wakefield accelerator for ultrafast X-ray absorption spectroscopy
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- 作者：D.A. Oulianov ; R.A. Crowell ; D.J. Gosztola and Y. Li
- 关键词：Thomson scattering ; Femtosecond X-ray generation ; Laser wakefield acceleration ; Ultrafast X-ray absorption ; Terawatt lasers
- 刊名：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
- 出版年：2005
- 出版时间：December 2005
- 年：2005
- 卷：241
- 期：1-4
- 页码：82-86
- 全文大小：109 K
文摘
A novel source of femtosecond keV X-ray pulses based on Thomson scattering from a terawatt laser wakefield accelerator is being developed for chemical studies. The characteristics of the source, based on recent calculations and experiments, are discussed. Due to its short pulse duration, high flux and collimation this X-ray source is very well suited for ultrafast time-resolved X-ray absorption experiments to study short-living transient structures in gasses, liquids and solids. As an example of such an experiment, we propose to study the solvent-solute dynamics in charge-transfer-to-solvent processes.