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铍/聚乙烯/铁组合球中的反应率测量

铍/聚乙烯/铁组合球中的反应率测量[J]. 原子能科学技术, 2004, 38(6): 497-497. DOI: 10.7538/yzk.2004.38.06.0497
引用本文: 铍/聚乙烯/铁组合球中的反应率测量[J]. 原子能科学技术, 2004, 38(6): 497-497. DOI: 10.7538/yzk.2004.38.06.0497
MOU Yun-feng, LIN Li-bin, CHEN Yuan, GUO Hai-ping, WANC Xin-hua, ZHU Chuan-xin, AN Li(Physics Department of Sichuan University, Key Laboratory of Education Ministryfor Radiation Physics and Technology, Chengdu 610064, China;Institute of Nuclear Physics and Chemistry, China Academy of Engineering P. Measurement of Reaction Rates in Be/PE/Fe Combined Spheres[J]. Atomic Energy Science and Technology, 2004, 38(6): 497-497. DOI: 10.7538/yzk.2004.38.06.0497
Citation: MOU Yun-feng, LIN Li-bin, CHEN Yuan, GUO Hai-ping, WANC Xin-hua, ZHU Chuan-xin, AN Li(Physics Department of Sichuan University, Key Laboratory of Education Ministryfor Radiation Physics and Technology, Chengdu 610064, China;Institute of Nuclear Physics and Chemistry, China Academy of Engineering P. Measurement of Reaction Rates in Be/PE/Fe Combined Spheres[J]. Atomic Energy Science and Technology, 2004, 38(6): 497-497. DOI: 10.7538/yzk.2004.38.06.0497

铍/聚乙烯/铁组合球中的反应率测量

详细信息
  • 中图分类号: O571.43

  • 摘要: 用HPGe探测器和活化箔法测量了DT中子照射下27Al(n,α)24Na、187Au(n,2n)196Au、197Au(n,γ)198Au反应在铍/聚乙烯/铁组合球中的活化率。运用MCNP/4B程序和ENDF/B-Ⅵ 数据库对实验进行模拟计算。对于27Al(n,α)Na、Au(n,2n)196Au反应,计算值与实验结果基本一致;197Au(n,γ)198Au反应计算结果与实验结果有相当大的差异。一个可能的原因是金箔对低能中子的自屏蔽效应。

     

    Abstract: Reaction rates of 27Al(n,α)24Na, 197Au(n,2n) 196Au and 197Au(n,γ) 198Au reactions in Be/PE/Fe combined spheres bombarded by central DT neutrons were measured by activation foil method with a HPGe detector. The simulating calculation was carried out using MCNP/4B code and ENDF/B-Ⅵ database for the above reactions. It is seen that the calculated reaction rate with that from experiment fits well for 27Al(n,α)24Na and 197Au(n,2n) 196Au reactions, and is far from agreement for 197Au(n,γ) 198Au reaction. A possible explanation for the disagreement is the self shielding effect of the activation Au foils for the low energy neutrons.

     

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出版历程
  • 收稿日期:  2003-06-11
  • 刊出日期:  2004-11-19

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