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Perspective for High Energy Density Studies on X-ray FELs

机译:X射线FEL的高能量密度研究的视角

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We report on the x-ray absorption of Warm Dense Matter experiment at the FLASH Free Electron Laser (FEL) facility at DESY. The FEL beam is used to produce Warm Dense Matter with soft x-ray absorption as the probe of electronic structure. A multilayer-coated parabolic mirror focuses the FEL radiation, to spot sizes as small as 0.3 μm in a ~15fs pulse of containing >10~(12) photons at 13.5 nm wavelength, onto a thin sample. Silicon photodiodes measure the transmitted and reflected beams, while spectroscopy provides detailed measurement of the temperature of the sample. The goal is to measure over a range of intensities approaching 10~(18) W/cm~2. Experimental results will be presented along with theoretical calculations. A brief report on future FEL efforts will be given.
机译:我们报告了DESY的无闪光灯电子激光(FEL)设施对热密物质实验的X射线吸收情况。 FEL光束用于产生具有软X射线吸收的热致密物质,作为电子结构的探针。多层镀膜的抛物面反射镜将FEL辐射聚焦到一个薄样品上,在约15fs的脉冲中,斑点直径小至0.3μm,该脉冲包含13.5 nm波长的> 10〜(12)个光子。硅光电二极管测量透射光束和反射光束,而光谱学则提供样品温度的详细测量。目标是在接近10〜(18)W / cm〜2的强度范围内进行测量。实验结果将与理论计算一起呈现。将提供有关未来FEL努力的简要报告。

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