Figure 1
Optical system of the imaging transmission hard X-ray microscope constructed at BL24XU of SPring-8. The microscope used quasi-parallel beam illumination. The photon energy used was 10 keV. A zone plate of diameter 1 mm and an outermost zone width of 50 nm was used as an objective X-ray lens. In order to spatially separate the desired +1st order real image, a lead plate was placed in front of the sample. A rotatable diffuser was inserted in front of the lead plate in order to decrease the coherence of illumination. In the case of phase-contrast microscopy, a phase plate was placed in the back focal plane of the zone plate objective. The optical magnification of the microscope was ×9.5. |