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Large-field high-resolution x-ray monochromatic microscope based on spherical crystals and high-repetition-rate laser-produced plasmas

机译:基于球形晶体和高重复率激光产生等离子体的大视野高分辨率x射线单色显微镜

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Abstract: The combination of a table-top laser produced plasmaX-ray source and spherically bent crystals for the softX-ray region is used in traditional X-ray microscopyschemes. The X-ray source is well localized bothspatially (approximately 20 micrometer) and temporally(1 ps - 10 ns, it depends on the used laser) and it isspectrally tunable in a relatively wide range (6 - 19angstrom). High quality monochromatic($delta$lambda@/$lambda approximately 10$+$MIN@5$/ -10$+$MIN@3$/) images with high spatial resolution (upto approximately 4 micrometer) and in a large field ofview (few mm) are presented. For many applications,these low-cost compact systems can offer a simplealternative to the larger installations which areusually used. It was demonstrated that the sphericallybent crystals can be efficiently used in a wide ($Thetaequals 40 - 90 degrees) range of reflection angles,thus allowing wide wavelength selection. A veryefficient concentration of monochromatic X-Rayradiation into different spot shapes (line, circlespot, etc) is demonstrated. !34
机译:摘要:传统的X射线显微术中使用台式激光产生的plasmaX射线源和用于softX射线区域的球形弯曲晶体的组合。 X射线源在空间(大约20微米)和时间(1 ps-10 ns,取决于所使用的激光)上都可以很好地定位,并且可以在相对较宽的范围(6-19埃)内进行光谱调谐。高质量的单色图像($ delta $ lambda @ / $ lambda大约10 $ + $ MIN @ 5 $ / -10 $ + $ MIN @ 3 $ /)图像,具有高空间分辨率(最大约4微米),并且在较大的视场中(几毫米)。对于许多应用而言,这些低成本的紧凑型系统可以为通常使用的大型安装提供一种简单的替代方案。事实证明,球形弯曲晶体可以有效地用于宽范围的反射角(θTheequal 40-90度),从而可以进行宽范围的波长选择。演示了非常有效的单色X射线集中到不同斑点形状(线,圆点等)的情况。 !34

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