The world’s most powerful X-ray laser beam - Focusing of X-ray lasers to 1 um size by atomically precise mirrors
The world’s most powerful X-ray laser beam
December 17, 2012
The SPring-8 Angstrom Compact Free Electron Laser (SACLA), which is placed at Harima-site in Hyogo prefecture, can produce full
coherent lasers at the wave length rages shorter than 1 angstrom. This facility is expected to reveal various things such as
unknown atomic structures of important proteins and time-change of the structure of materials under extreme pressure conditions.
To perform these experiments, it is necessary to further increase the intensity density of XFEL beams by collecting XFELs to the
Dr. Hirokatsu Yumoto at Japan Synchrotron Radiation Institute, Professor Kazuto Yamauchi at Osaka University,
Associate Professor Hidekazu Mimura at Department of Precision Engineering Graduate School of Engineering,
The University of Tokyo, Group Director Dr. Yabashi Makina at RIKEN and their colleagues successfully fabricated
the ultraprecise X-ray mirrors with an atomic-level accuracy and installed them to SACLA. Then, they performed
focusing XFEL tests and realized the one micrometer size for the first time in the world. The intensity density
was achieved to be 6×1017W/cm2 which is now the world’s most intensive value.
Now, some researches using the imaging system with the focused XFEL beam are now already started to clarify the
structures of the single-celled creature and the structure of protein materials with atomic spatial resolutions.
These researches will contribute to determination of the cause of diseases and new drug developments.
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