| STUDY ON MODERATORS OF SMALL－SIZE NEUTRON RADIOGRAPHY INSTALLATIONS WITH NEUTRON TUBE AS SOURCE |
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| 引用本文： | 马维超,周明达,李忠民,吴执中.STUDY ON MODERATORS OF SMALL－SIZE NEUTRON RADIOGRAPHY INSTALLATIONS WITH NEUTRON TUBE AS SOURCE[J].核技术(英文版),1995(3). |
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| 作者姓名： | 马维超 周明达 李忠民 吴执中 |
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| 作者单位： | Ma Weichao; Zhou Mingda; Li Zhongmin (Northeast Normal University，Changchun 130024，China)and Wu Zhizhong (Jinn University of Technology，Changchun 130025，China) |
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| 摘 要： | ＳＴＵＤＹ ＯＮ ＭＯＤＥＲＡＴＯＲＳ ＯＦ ＳＭＡＬＬ－ＳＩＺＥ ＮＥＵＴＲＯＮ ＲＡＤＩＯＧＲＡＰＨＹ ＩＮＳＴＡＬＬＡＴＩＯＮＳ ＷＩＴＨ ＮＥＵＴＲＯＮ ＴＵＢＥ ＡＳ ＳＯＵＲＣＥＭａＷｅｉｃｈａｏ（马维超）；ＺｈｏｕＭｉｎｇｄａ（周明达）...
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STUDY ON MODERATORS OF SMALL-SIZE NEUTRON RADIOGRAPHY INSTALLATIONS WITH NEUTRON TUBE AS SOURCE |
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| Ma Weichao, Zhou Mingda, Li Zhongmin.STUDY ON MODERATORS OF SMALL-SIZE NEUTRON RADIOGRAPHY INSTALLATIONS WITH NEUTRON TUBE AS SOURCE[J].Nuclear Science and Techniques,1995(3). |
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| Authors: | Ma Weichao Zhou Mingda Li Zhongmin |
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| Abstract: | Calculation of moderator analogues for 14 MeV neutrons as source were made at a IBM/PC AT computer using TAMAKER-ANISN program and 46 groups (25 neutron groups, 21 photon groups) UW cross section data. The intensifying effect of lead and natural uranium for moderating 14 MeV neutrons is confirmed. Adopting proper structure of the moderator, the intensifying factor M (times) may be larger than 3. Using lead and natural uranium in sub-critical assemblies (or call boosters),with 14 MeV neutrons as source, with the same dimension as that of above, the intensifying effect is also condrmed. With a proper structure of sub-critical assembly,the intensifying factor M may be close to or eved larger than (1 - k)-1 where k isthe effective multiplication factor. |
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| Keywords: | Sealed neutron tube Neutron radiography Moderator Intensifying matenals Computer calculations |
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