X-Ray Optics 'Owl' and 'Trinity'.

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  • Ando Masami
    Photon Factory (PF), Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Oho 1-1, Tsukuba, Ibaraki 305-0801, Japan Department of Photo-Science, School of Advanced Studies, Graduate University for Advanced Studies (GUAS), Shonan International Village, Hayama, Miura, Kanagawa 240-0193, Japan
  • Hyodo Kazuyuki
    Photon Factory (PF), Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Oho 1-1, Tsukuba, Ibaraki 305-0801, Japan Department of Photo-Science, School of Advanced Studies, Graduate University for Advanced Studies (GUAS), Shonan International Village, Hayama, Miura, Kanagawa 240-0193, Japan
  • Sugiyama Hiroshi
    Photon Factory (PF), Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Oho 1-1, Tsukuba, Ibaraki 305-0801, Japan Department of Photo-Science, School of Advanced Studies, Graduate University for Advanced Studies (GUAS), Shonan International Village, Hayama, Miura, Kanagawa 240-0193, Japan
  • Maksimenko Anton
    Department of Photo-Science, School of Advanced Studies, Graduate University for Advanced Studies (GUAS), Shonan International Village, Hayama, Miura, Kanagawa 240-0193, Japan
  • Pattanasiriwisawa Wanwisa
    Department of Photo-Science, School of Advanced Studies, Graduate University for Advanced Studies (GUAS), Shonan International Village, Hayama, Miura, Kanagawa 240-0193, Japan
  • Mori Koichi
    Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, Ami 4669-2, Inashiki, Ibaraki 300-0394, Japan
  • Roberson Joseph
    California Ear Institute at Stanford, Stanford, CA 94304, U.S.A.
  • Rubenstein Edward
    Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, U.S.A.
  • Tanaka Yoshihisa
    National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, Ibaraki 305-0047, Japan
  • Chen Junyuan
    Nanjing Institute of Paleontology and Geology, 39 East Beijing Rd., Nanjing 210008, China
  • Xian Dingchang
    Beijing Synchrotron Radiation Laboratory, Institute of High Energy Physics, Academia Sinica, P. O. Box 918, Beijing 100039, China
  • Xiaowei Zhang
    Photon Factory (PF), Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Oho 1-1, Tsukuba, Ibaraki 305-0801, Japan Department of Photo-Science, School of Advanced Studies, Graduate University for Advanced Studies (GUAS), Shonan International Village, Hayama, Miura, Kanagawa 240-0193, Japan

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Abstract

We report an X-ray optical system ‘Owl’, capable of dark-field imaging. It comprises a Bragg case asymmetric monochromator and a monolithic X-ray optics housing a collimator C and an analyzer A that can select only the refracted light by 4,4,0 diffraction and crystals C and A of 1.08 mm thickness. The angular width of diffraction is 0.3 μrad at an X-ray energy of 35 keV. It has been proven that one can obtain the dark-field image corresponding to a forward diffraction beam as well as the bright-field image corresponding to a diffraction beam or vice versa depending on the specified thickness of the analyzer. Images due to refraction contrast in the dark-field imaging are clearly shown. In this paper, design and test of this X-ray optics and its preliminary applications are described in detail. Also another X-ray optics ‘Trinity’, which is capable of viewing three types of contrast, namely, refraction, phase interference and absorption, has been implemented.

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