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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
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  • 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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