Momose Atsushi, Yashiro Wataru, Maikusa Hirohide, Takeda Yoshihiro
Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.
Opt Express. 2009 Jul 20;17(15):12540-5. doi: 10.1364/oe.17.012540.
X-ray Talbot interferometry, which uses two transmission gratings, has the advantage that broad energy bandwidth x-rays can be used. We demonstrate the use of white synchrotron radiation for high-speed X-ray phase imaging and tomography in combination with an X-ray Talbot interferometer. The moiré fringe visibility over 20% was attained, enabling quantitative phase measurement. X-ray phase images with a frame rate of 500 f/s and an X-ray phase tomogram with a scan time of 0.5 s were obtained successfully. This result suggests a breakthrough for time-resolved three-dimensional observation of objects that weakly absorb X-rays, such as soft material and biological objects.
使用两个透射光栅的X射线塔尔博特干涉测量法具有可以使用宽能量带宽X射线的优势。我们展示了将白色同步辐射与X射线塔尔博特干涉仪相结合用于高速X射线相成像和断层扫描。获得了超过20%的莫尔条纹可见度，从而能够进行定量相位测量。成功获得了帧率为500帧/秒的X射线相图像和扫描时间为0.5秒的X射线相断层图像。这一结果表明在对弱吸收X射线的物体（如软材料和生物物体）进行时间分辨三维观察方面取得了突破。
