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X-Rays

Self-seeded FEL emits hard X-rays

X-ray free-electron lasers are bright, femtosecond X-ray sources. Researchers have now operated one in a seeding scheme that allows X-ray pulse output approaching the single-mode ideal and produces a remarkable enhancement in monochromatic power.

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Figure 1: Time and frequency responses of transmission beam from diamond monochromator.
Figure 2: Diamond monochromator.

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Correspondence to Makina Yabashi or Takashi Tanaka.

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Yabashi, M., Tanaka, T. Self-seeded FEL emits hard X-rays. Nature Photon 6, 648–649 (2012). https://doi.org/10.1038/nphoton.2012.237

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