Acta Optica Sinica, Volume. 35, Issue 9, 934001(2015)
Design and Performance Testing of an Anti-Scattering Grid for Medium-Energy Flash Radiography
An effective design of a tungsten anti-scattering grid with 2 mm in thickness for medium-energy X-ray imaging is proposed. The grid is produced by precise mechanical drilling technology and is with the typical size of 52 mm × 52 mm. The flash radiographic experiments to test grid anti-scattering performance are performed based on a 450 kV medium-energy X-ray source, and the numerical simulation by the Monte Carlo method is also carried out. The imaging experimental results show that the image quality of flash radiography is improved substantially after the grid is used, and the boundary clarity in the sample core is enhanced obviously. The numerical simulation results indicate that scattering gray at any image position is lower than direct gray when the anti-scattering grid is used, and the ratio of scattering gray to direct gray is reduced by 74.7% compared to that without grids.
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Liu Wenjie, Ma Qingpeng, Fan Cheng, Liu Jun. Design and Performance Testing of an Anti-Scattering Grid for Medium-Energy Flash Radiography[J]. Acta Optica Sinica, 2015, 35(9): 934001
Category: X-Ray Optics
Received: Apr. 13, 2015
Accepted: --
Published Online: Sep. 1, 2015
The Author Email: Wenjie Liu (wjliu@mail.ustc.edu.cn)