SPring-8/SACLA Research Report
Online ISSN : 2187-6886
Current issue
SPring-8 Document D 2023-014
Displaying 1-20 of 20 articles from this issue
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  • Hiroyasu Masunaga, Hironobu Machida, Tetsuo Katayama, Yoshinori Nishin ...
    2023 Volume 11 Issue 5 Pages 382-386
    Published: October 31, 2023
    Released on J-STAGE: October 31, 2023
  • F. Zimmermann, S. Kuschel, M. Ware, S. Li, J. Haber, B. Reeves, Y. Sun ...
    2023 Volume 11 Issue 5 Pages 387-389
    Published: October 31, 2023
    Released on J-STAGE: October 31, 2023
     Imaging of atomic structure with X-rays is an essential diagnostics tool for modern natural sciences. The best spatial resolution in coherent X-ray imaging of non-periodic nanostructures is limited by overall low cross sections for elastic X-ray scattering. One possible pathway to overcome the present limitations is to extract structural information from inelastic scattering processes which have higher cross sections with X-rays and reach into higher scattering angles. One such process is metal K-shell fluorescence, which can exhibit two-photon interference effects and thus, carries structural maps of the fluorescencing sample[1]. This approach has two significant strengths. First, it relies on X-ray fluorescence which is emitted uniformly into all directions. Second, the structural information is extracted from an element-specific X-ray fluorescence line, which combines high spatial resolution with spectroscopic sensitivity. In theory, incoherent fluorescence imaging can be applied to crystalline and non-crystalline samples and deliver 3D maps of the nanoscale. We confirmed the presence of such speckles and measured a projection of the FEL nano-focus spot on a metal foil.
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