Pelliccia Daniele, Paganin David M
School of Physics, Monash University, Victoria 3800, Australia.
Opt Express. 2013 Apr 22;21(8):9308-14. doi: 10.1364/OE.21.009308.
A novel approach for hard x-ray phase contrast imaging with a laboratory source is reported. The technique is based on total external reflection from the edge of a mirror, aligned to intercept only half of the incident beam. The mirror edge thus produces two beams. The refraction x-rays undergo when interacting with a sample placed before the mirror, causes relative intensity variations between direct and reflected beams. Quantitative phase contrast and pure absorption imaging are demonstrated using this method.
报道了一种利用实验室光源进行硬X射线相衬成像的新方法。该技术基于从镜子边缘的全外反射，镜子边缘的设置使得只截取一半的入射光束。因此，镜子边缘产生两束光。当折射的X射线与置于镜子前方的样品相互作用时，会导致直射光束和反射光束之间的相对强度变化。利用该方法实现了定量相衬成像和纯吸收成像。
