X-Ray Optics 'Owl' and 'Trinity'
| Autor: | Dingchang Xian, Koichi Mori, Kazuyuki Hyodo, Yoshihisa Tanaka, Xiao W. Zhang, Wanwisa Pattanasiriwisawa, Joseph B. Roberson, Masami Ando, Anton Maksimenko, Edward Rubenstein, Hiroshi Sugiyama, Jy Chen |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Diffraction
Physics Spectrum analyzer Physics and Astronomy (miscellaneous) business.industry Astrophysics::High Energy Astrophysical Phenomena General Engineering Physics::Optics General Physics and Astronomy X-ray optics Collimator Interference (wave propagation) Refraction law.invention Optics law Diffraction topography business Monochromator |
| Zdroj: | Japanese Journal of Applied Physics. 41:4742-4749 |
| ISSN: | 1347-4065 0021-4922 |
| DOI: | 10.1143/jjap.41.4742 |
| Popis: | 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 murad 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. |
| Databáze: | OpenAIRE |
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