Graduate School of Engineering, Osaka University, Suita, Osaka, Japan.
Opt Lett. 2013 Jan 15;38(2):157-9. doi: 10.1364/OL.38.000157.
We demonstrate hard x-ray phase contrast imaging (XPCI) using a tabletop Talbot-Lau interferometer in which the x-ray source and source grating are replaced with an x-ray source with multiline metal targets embedded in a diamond substrate. This source realizes an array of linear x-ray sources of a few micrometers width without fabrication difficulty because of the shallow penetration depth of electrons irradiated to the metal targets. This enhances the coherence of x rays from each linear source and allows XPCI within 45 cm source-detector distance under 1.2 W input power for 8 keV x rays.
我们使用桌面型泰伯-劳（Talbot-Lau）干涉仪进行了硬 X 射线相衬成像（XPCI），其中用嵌入在金刚石衬底中的多线金属靶的 X 射线源替代了 X 射线源和源光栅。由于电子照射到金属靶的穿透深度较浅，因此这种源实现了具有数微米宽度的线性 X 射线源的阵列，而没有制造难度。这增强了来自每个线性源的 X 射线的相干性，并允许在 8keV X 射线、1.2W 输入功率下在 45cm 的源-探测器距离内进行 XPCI。
