Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2017, Vol. 28 ›› Issue (6): 78 doi: 10.1007/s41365-017-0228-5

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Contrast sensitivity in 14 MeV fast neutron radiography

Chang-Bing Lu1,2, Jie Bao1, Ying Huang3, Peng Xu2, Xiong-Jun Chen1, Qi-Wei Zhang1, Xi-Chao Ruan1
  

  1. 1 Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing 102413, China
    2 Xi’an Institute of High Technology, Xi’an 710025, China
    3 Science and Technology Information Center, China Academy of Engineering Physics, Mian-Yang 621999, China
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Chang-Bing Lu, Jie Bao, Ying Huang, Peng Xu, Xiong-Jun Chen, Qi-Wei Zhang, Xi-Chao Ruan. Contrast sensitivity in 14 MeV fast neutron radiography.Nuclear Science and Techniques, 2017, 28(6): 78     doi: 10.1007/s41365-017-0228-5
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Abstract:

Fast neutron radiography (FNR) is an effective non-destructive testing technique. Due to the scattering effect and low detection efficiency, the detection limit of
FNR under certain conditions cannot be determined. In order to obtain the minimum detectable thickness by FNR, we studied the contrast sensitivity of FNR lead samples, both theoretically and experimentally. We then clarified the relationship between pixel value and irradiation time, and sample materials and thickness. Our experiment, using a 4-cm-thick lead sample, verified our theoretical expression of FNR contrast sensitivity.

Key words: Fast neutron radiography, Contrast sensitivity, Experimental research