硬X射线相位衬度成像的实验研究

介绍了硬X射线(类同轴)相位衬度成像的工作原理及其实验研究结果。X射线波长为0．08860nm,样品为未经任何处理的飞蛾，记录介质为X射线胶片。胶片经处理以后，用光学显微镜读出，可以看出样品的许多细节,尤其在折射率突变处。而同样条件下基于吸收衬度机制的硬X射线吸收成像，由于是弱吸收样品．没有观察到任何图像。

The principle and experimental results of hard X-ray phase-contrast imaging are presented in the paper. The wavelength of the X-ray is 0.08860 nm and the specimen is a natural moth. The obtained image was readout by optical microscope, using Kodak high-resolution X-ray films as recording medium. It is demonstrated that some fine structures of the moth were recognized, especially in the boundary areas of the specimen. Contrarily, no absorption-contrast images were observed under the same conditions.