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9 September 2019 An optical design of twin Wolter mirrors for focusing and imaging experiments with soft X-ray free electron lasers
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Abstract
This paper presents the designs and simulations of twin Wolter mirrors for focusing and imaging experiments with soft Xray free electron lasers. Wave-optical simulations at a photon energy of 100 eV indicate that the designed focusing Wolter mirror focuses soft X-ray beams to a 300 nm × 200 nm spot with an acceptable rotational error of 1.7 mrad × 1.4 mrad and that the objective Wolter mirror, which receives the beam that passes through the focusing Wolter mirror and a sample, forms bright-field images with a spatial resolution of 140 nm × 140 nm. The focusing Wolter mirror enables long-term experiments with high stability, and the objective Wolter mirror is applicable to imaging-before-destruction.
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S. Egawa, G. Yamaguchi, H. Motoyama, S. Owada, Y. Kubota, K. Tono, H. Ohashi, M. Yabashi, and H. Mimura "An optical design of twin Wolter mirrors for focusing and imaging experiments with soft X-ray free electron lasers", Proc. SPIE 11108, Advances in X-Ray/EUV Optics and Components XIV, 1110804 (9 September 2019); https://doi.org/10.1117/12.2529039
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