Contrast sensitivity in 14 MeV fast neutron radiography |
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| Authors: | Chang-Bing Lu Jie Bao Ying Huang Peng Xu Xiong-Jun Chen Qi-Wei Zhang Xi-Chao Ruan |
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| Affiliation: | 1. Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing 102413, China;Xi'an Institute of High Technology, Xi'an 710025, China;2. Key Laboratory of Nuclear Data, China Institute of Atomic Energy, Beijing 102413, China;3. Science and Technology Information Center, China Academy of Engineering Physics, Mian-Yang 621999, China;4. Xi'an Institute of High Technology, Xi'an 710025, China |
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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. |
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| Keywords: | Fast neutron radiography Contrast sensitivity Experimental research |
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