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
- 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
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.