Ueyama, D.
(D. Ueyama)

TUPOS27 Development of Compact Soft X-ray Source Based on Laser Undulator
Ryunosuke Kuroda, K. Hidume, S. Minamiguchi, T. Saito, D. Ueyama, Masakazu Washio (RISE, Tokyo), Shigeru Kashiwagi (ISIR, Osaka), Hitoshi Hayano, Junji Urakawa (KEK, Ibaraki)

A compact soft X-ray source is required in various research fields such as material and biological science. The laser undulator based on backward Compton scattering has been developed as a compact soft X-ray source for the biological observation at Waseda University. It is performed in a water window region (250eV - 500 eV) using the interaction between 1047 nm Nd:YLF laser and 4 MeV high quality electron beam generated from rf gun system. The range of energy in the water window region has K-shell absorption edges of Oxygen, Carbon and Nitrogen, which mainly constitute of living body. Since the absorption coefficient of water is much smaller than the protein’s coefficient in this range, a dehydration of the specimens is not necessary. As a preliminary experiment, about 300 eV X-ray generation was carried out. As next step, soft X-ray optics with zone plate was proposed for Soft X-ray microscopy. In this conference, we will report details and results of the experiment.