Evaluation of Spatial Resolution for X-Ray Imaging Using Vertically Polarized Synchrotron Radiation at the Photon Factory

抄録

Synchrotron radiation x-rays provide x-ray images with improved spatial and density resolutions compared to those using conventional x-ray sources. BL-14 at the Photon Factory in Japan is a characteristic beamline where a vertically polarized synchrotron radiation beam is produced from a superconducting vertical wiggler which is the only active vertical wiggler in the world with a field strength of five Tesla. Here, the performance of vertically polarized synchrotron radiation x-rays emitted by a vertical wiggler is discussed from the viewpoint of x-ray imaging. The distance between the source point of x-rays and the detector is more than 36 m at BL-14C, which is one of the three experimental stations at the vertical wiggler beamline. Although the effect of the source point size on the spatial resolution of an x-ray image is unknown, a key advantage of x-ray imaging at BL-14C is a high-spatial resolution x-ray image in the vertical direction. We evaluate the spatial resolution of an x-ray image in the vertical direction taken at BL-14C quantitively.