Chinese Optics Letters, 2015, 13 (9): 093401, Published Online: Sep. 14, 2018   

Application of polycapillary x ray lens to eliminate both the effect of x ray source size and scatter of the sample in laboratory tomography Download: 885次

Author Affiliations
1 The Key Laboratory of Beam Technology and Materials Modification of the Ministry of Education, Beijing Normal University, Beijing 100875, China
2 College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China
3 Beijing Radiation Center, Beijing 100875, China
4 Center 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.

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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