,Measurement of Cross Sections for the 10B(n,α)'7Li Reaction at 4.0 and 5.0 MeV Using an Asymme

• 作 者: ZHANG Guo-Hui LIU Xiang LIU Jia-Ming XUE Zhi-Hua WU Hao CHEN Jin-Xiang
• 机 构: State Key Laboratory of Nuclear Physics and Technology, Institute of Heavy Ion Physics, School of Ph
• 出 处: 中国物理快报（英文版）
• 发表日期: 2011年8期

Cross sections of the 10B(n, α) 7Li reaction (including the total, the "leaking" alpha, forward alpha and backward alpha parts) at En＝4.0 and 5.OMcV were measured using an asymmetrical twin gridded ionization chamber and two back-to-back 10B samples.Measurements were performed at the 4.5MV Van de Graaff accelerator of Peking University.Monoenergetic neutrons were produced through the 2H(d, n)3 He reaction with a deuterium gas target.Absolute neutron flux was determined by a 238 U sample set inside the gridded ionization chamber and a BF3 long counter was employed as a neutron flux monitor and for normalization.The present results are compared with previous measurements and evaluations.