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2007 Volume 16 Issue 6
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Liu Xin, Guo Jin-Chuan, Peng Xiang, Niu Han-Ben. 2007: Visibility in differential phase-contrast imaging with partial coherence source, Chinese Physics B, 16(6): 1632-1636.
Citation: Liu Xin, Guo Jin-Chuan, Peng Xiang, Niu Han-Ben. 2007: Visibility in differential phase-contrast imaging with partial coherence source, Chinese Physics B, 16(6): 1632-1636.
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Visibility in differential phase-contrast imaging with partial coherence source

  • Institute of Optoelectronics Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;Institute of Optoelectronics, Shenzhen University, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, Shen

  • Institute of Optoelectronics, Shenzhen University, Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education, Shenzhen 518060, China

  • Available Online: 30/06/2007
  • Fund Project: the State Key Program of National Natural Science of China (Grant 60532090)
  • This paper gives theoretical analysis of visibility of fringes, which is influenced by distances, temporal and spatial coherence of source, in hard x-ray differential phase-contrast imaging with microfocus x-ray source. According to the character of longitudinal periodicity of the interferogram, the setup is insensitive to mechanical drift and vibrations. The effect of temporal coherence of x-ray source is investigated and its related bandwidth is derived. Based on the theory of partially coherent light, it shows that the requirement for the spatial coherence of x-ray source is not strict and can be met by the general microfocus x-ray tube for x-ray differential phase-contrast imaging.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Visibility in differential phase-contrast imaging with partial coherence source

  • Available Online: 30/06/2007

Abstract: This paper gives theoretical analysis of visibility of fringes, which is influenced by distances, temporal and spatial coherence of source, in hard x-ray differential phase-contrast imaging with microfocus x-ray source. According to the character of longitudinal periodicity of the interferogram, the setup is insensitive to mechanical drift and vibrations. The effect of temporal coherence of x-ray source is investigated and its related bandwidth is derived. Based on the theory of partially coherent light, it shows that the requirement for the spatial coherence of x-ray source is not strict and can be met by the general microfocus x-ray tube for x-ray differential phase-contrast imaging.

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