Imaging Ultrafast Dynamical Diffraction Wave Fronts in Strained Si with Coherent X Rays
| العنوان: | Imaging Ultrafast Dynamical Diffraction Wave Fronts in Strained Si with Coherent X Rays |
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| المؤلفون: | Rodriguez-Fernandez, Angel, Diaz, Ana, Harihara Subramonia Iyer, Anand, 1990, Verezhak, Mariana, Wakonig, Klaus, Hörnqvist Colliander, Magnus, 1979, Carbone, Dina |
| المصدر: | Physical Review Letters. 127(15) |
| الوصف: | Dynamical diffraction effects in thin single crystals produce highly monochromatic parallel x-ray beams with a mutual separation of a few microns and a time delay of a few femtoseconds—the so-called echoes. This ultrafast diffraction effect is used at X-Ray Free Electron Lasers in self-seeding schemes to improve beam monochromaticity. Here, we present a coherent x-ray imaging measurement of echoes from Si crystals and demonstrate that a small surface strain can be used to tune their temporal delay. These results represent a first step toward the ambitious goal of strain tailoring new x-ray optics and, conversely, open up the possibility of using ultrafast dynamical diffraction effects to study strain in materials. |
| وصف الملف: | electronic |
| URL الوصول: | https://research.chalmers.se/publication/526633 https://research.chalmers.se/publication/526633/file/526633_Fulltext.pdf |
| قاعدة البيانات: | SwePub |
| تدمد: | 10797114 00319007 |
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| DOI: | 10.1103/PhysRevLett.127.157402 |