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 Sun; Zhiguo Liu; Tianxi Sun; Longtao Yi; Weiyuan Sun; Fangzuo Li; Bowen Jiang; Yongzhong Ma; Xunliang Ding

doi:doi:10.3788/COL201513.093401

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： 893次

Xuepeng Sun ^1,2,3Zhiguo Liu ^1,2,3Tianxi Sun ^1,2,3,*Longtao Yi ^1,2,3Weiyuan Sun ^1,2,3Fangzuo Li ^1,2,3Bowen Jiang ^1,2,3Yongzhong Ma ⁴Xunliang Ding ^1,2,3

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

Figures & Tables

Fig. 1. Scheme of the x ray absorption imaging device based on a polycapillary x ray lens.

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Fig. 2. (a) Picture of the PPXRL. (b) Picture of the PCXRL. (c) Cross section of the outside of the PPXRL. The channel size is about 7 μm.

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Fig. 3. Image of output beam of PPXRL at the distance of 30 cm from the CCD detector.

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Fig. 4. X ray intensity distribution of the output beam of the PPXRL at a distance of 30 cm from the CCD detector.

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Fig. 5. Distribution of the gain of the PPXRL at a distance of 30 cm from the CCD detector.

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Fig. 6. Picture of the mesh used in the experiment.

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Fig. 7. Image of the mesh at a distance of 20 cm from the PPXRL taken by the tomography device (a) with and (b) without the PCXRL.

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Fig. 8. Corresponding intensity profiles of the images in Fig. 7(a) and 7(b).

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Fig. 9. (a) Ratio of intensities in Fig. 8. (b) Image of Fig. 7 after flat-field correction.

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Fig. 10. Image of the mesh in different places. (a) L1=20 cm and L2=2 cm. (b) L1=20 cm and L3=2 cm.

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Fig. 11. Contrast of the images as a function of the distance between the detector and the outside of PCXRL (the red line), and between the sample and the inside of PCXRL (the black line).

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Fig. 12. Distribution of the local angular divergence of the output beam from the PPXRL.

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Table1. The Main Geometric Parameters of the PPXRL and PCXRL

Parameter	PPXRL	PCXRL
Length/mm	73.2	43.7
Input Diameter/mm	3.7	4.3
Output Diameter/mm	4.3	4.3
Input Focal Distance/mm	71.2	Not available
Number of the Capillary/ca	320000	320000

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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.

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： 893次

Fig. 1. Scheme of the x ray absorption imaging device based on a polycapillary x ray lens.

Fig. 2. (a) Picture of the PPXRL. (b) Picture of the PCXRL. (c) Cross section of the outside of the PPXRL. The channel size is about 7 μm.

Fig. 3. Image of output beam of PPXRL at the distance of 30 cm from the CCD detector.

Fig. 4. X ray intensity distribution of the output beam of the PPXRL at a distance of 30 cm from the CCD detector.

Fig. 5. Distribution of the gain of the PPXRL at a distance of 30 cm from the CCD detector.

Fig. 6. Picture of the mesh used in the experiment.

Fig. 7. Image of the mesh at a distance of 20 cm from the PPXRL taken by the tomography device (a) with and (b) without the PCXRL.

Fig. 8. Corresponding intensity profiles of the images in Fig. 7(a) and 7(b).

Fig. 9. (a) Ratio of intensities in Fig. 8. (b) Image of Fig. 7 after flat-field correction.

Fig. 10. Image of the mesh in different places. (a) L1=20 cm and L2=2 cm. (b) L1=20 cm and L3=2 cm.

Fig. 11. Contrast of the images as a function of the distance between the detector and the outside of PCXRL (the red line), and between the sample and the inside of PCXRL (the black line).

Fig. 12. Distribution of the local angular divergence of the output beam from the PPXRL.

Table1. The Main Geometric Parameters of the PPXRL and PCXRL

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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： 893次

Fig. 1. Scheme of the x ray absorption imaging device based on a polycapillary x ray lens.

Fig. 2. (a) Picture of the PPXRL. (b) Picture of the PCXRL. (c) Cross section of the outside of the PPXRL. The channel size is about 7 μm.

Fig. 3. Image of output beam of PPXRL at the distance of 30 cm from the CCD detector.

Fig. 4. X ray intensity distribution of the output beam of the PPXRL at a distance of 30 cm from the CCD detector.

Fig. 5. Distribution of the gain of the PPXRL at a distance of 30 cm from the CCD detector.

Fig. 6. Picture of the mesh used in the experiment.

Fig. 7. Image of the mesh at a distance of 20 cm from the PPXRL taken by the tomography device (a) with and (b) without the PCXRL.

Fig. 8. Corresponding intensity profiles of the images in Fig. 7(a) and 7(b).

Fig. 9. (a) Ratio of intensities in Fig. 8. (b) Image of Fig. 7 after flat-field correction.

Fig. 10. Image of the mesh in different places. (a) L1=20 cm and L2=2 cm. (b) L1=20 cm and L3=2 cm.

Fig. 11. Contrast of the images as a function of the distance between the detector and the outside of PCXRL (the red line), and between the sample and the inside of PCXRL (the black line).

Fig. 12. Distribution of the local angular divergence of the output beam from the PPXRL.

Table1. The Main Geometric Parameters of the PPXRL and PCXRL

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