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  • Received: Apr. 11, 2015

    Accepted: Jul. 9, 2015

    Posted: Jan. 23, 2019

    Published Online: Sep. 14, 2018

    The Author Email: Tianxi Sun (stx@bnu.edu.cn)

    DOI: 10.3788/COL201513.093401

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    Xuepeng Sun, Zhiguo Liu, Tianxi Sun, Longtao Yi, Weiyuan Sun, Fangzuo Li, Bowen Jiang, Yongzhong Ma, Xunliang Ding. Application of polycapillary x ray lens to eliminate both the effect of x ray source size and scatter of the sample in laboratory tomography[J]. Chinese Optics Letters, 2015, 13(9): 093401

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Chinese Optics Letters, Vol. 13, Issue 9, 093401 (2015)

Application of polycapillary x ray lens to eliminate both the effect of x ray source size and scatter of the sample in laboratory tomography

Xuepeng Sun1,2,3, Zhiguo Liu1,2,3, Tianxi Sun1,2,3,*, Longtao Yi1,2,3, Weiyuan Sun1,2,3, Fangzuo Li1,2,3, Bowen Jiang1,2,3, Yongzhong Ma4, and Xunliang Ding1,2,3

Author Affiliations

  • 1The Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875, China
  • 2College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
  • 3Beijing Radiation Center, Beijing 100875, China
  • 4Center for Disease Control and Prevention of Beijing, Beijing 100013, China

Abstract

A tomography device based on a conventional laboratory x ray source, polycapillary parallel x ray lens (PPXRL), and polycapillary collimating x ray lens (PCXRL) is designed. The PPXRL can collect the divergent x ray beam from the source and focus it into a quasi-parallel x ray beam with a divergence of 4.7?mrad. In the center of quasi-parallel x ray beam, there is a plateau region with an average gain in power density of 13.8 and a diameter of 630?μm. The contrast of the image can be improved from 28.9% to 56.0% after adding the PCXRL between the sample and the detector.