Development of a single-shot soft-X-ray reflection type microscope

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A grazing angle incident reflection type soft x-ray microscope, using a Fresnel zoneplate as an imaging element and a soft x-ray laser with a wavelength of 13.9 nm and a pulse width of 7 ps as a light source was developed. Groove structures made on a Pt film were clearly captured at a single shot exposure. The spatial resolution near the center of the field was 200 nm and 1000 nm in vertical and horizontal directions, respectively. The degradation of the resolution within 100 μm square was tolerable. This microscope was proven to have a performance sufficient for scientific use.