2014 年 56 巻 1 号 p. 27-35
Coherent X-ray diffraction imaging(CXDI)is a lens-less imaging technique that can visualize the structures of non-crystalline particles with micro- to sub-micrometer dimensions. In CXDI experiments, spatially isolated particles are irradiated by X-ray beam with high transverse coherence. Projection images of the particles along the incident X-ray direction are then directly reconstructed from the diffraction amplitude using a phase retrieval algorithm. Here we report CXDI experiments carried out at the X-ray free electron laser(XFEL)facility SACLA, and describe the theoretical background of CXDI, development of a diffractometer and data processing.