| 光谱学与光谱分析 |
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| Beam Hardening Simulated Correction Research for X-Ray TICT in Testing Composites Workpiece |
| PENG Guang-han1,CAI Xin-hua1,HAN Zhong2,ZHOU Ri-feng3,YANG Xue-heng2 |
1. Department of Physics and Electronics，Hunan College of Arts and Science，Changde 415000，China
2. College of Science, Chongqing University, Chongqing 400044, China
3. ICT Center, Chongqing University, Chongqing 400044, China |
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Abstract In X-ray TICT, when X-ray is transmitted in the materal, the phenomenon of energy spectrum hardening takes place, resulting in artifacts. Thus, hardening correction has to be done. In the present paper, the phenomenon of X-ray beam hardening resulting in analyized, and the relation between the X-ray beam sum and the transmission thickness in testing composites workpiece is discussed. According to the Beer law and the characteristics of the interaction between X-ray and the material, and getting the data of X-ray beam sum, the relation equation between the beam sum and transmission thickness is simulated firstly, and testing composites workpiece. Then, the relation and the method of equivalence are carried out between the equivalent transmission thickness and the transmission thickness for X-ray beam sum being corrected for monochromatic ray beam. Finally, the attenuation coefficient beam hardening simulated value for X-ray equivalent monochromatic is reasoned out in testing composites workpiece. Then, the attenuation coefficient simulated value that has been corrected is used for product back-projection reconstruction. Thus, the effect caused by X-ray beam hardening is wipped off effectively in testing composites workpiece.
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Received: 2006-11-08
Accepted: 2007-03-09
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Corresponding Authors:
PENG Guang-han
E-mail: pengguanghan@yahoo.com.cn
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| Cite this article: |
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PENG Guang-han,CAI Xin-hua,HAN Zhong, et al. Beam Hardening Simulated Correction Research for X-Ray TICT in Testing Composites Workpiece[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2007, 27(09): 1882-1885.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2007/V27/I09/1882 |
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