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Measurement of fission cross sections for 232Th(n,f)XZ84 reaction around the neutron energy of 14 MeV.
Applied Radiation and Isotopes ( IF 1.6 ) Pub Date : 2020-06-03 , DOI: 10.1016/j.apradiso.2020.109242
Luocheng Yang 1 , Yafei Han 1 , Qing Qin 1 , Qiang Wang 2 , Kaihong Fang 2
Affiliation  

Neutron induced fission cross sections of 232Th(n,f)84Se, 232Th(n,f)84mBr, 232Th(n,f)84gBr reactions were measured based on neutrons from the D-T source. The α-particles emitted from the T(d,n)4He reaction were measured to monitor the neutron flux, while the ratio of 90Zr(n,2n)89Zr to 93Nb(n,2n)92mNb reactions was used to determine the neutron energy. The gamma-ray activity of samples was measured with a well calibrated HPGe-γ detector. In the 232Th(n,f) reaction at the neutron energies of 14.1 ± 0.3, 14.5 ± 0.3 and 14.7 ± 0.1 MeV, the cross sections are 2.74 ± 0.23, 2.75 ± 0.25, and 2.30 ± 0.21 mb for 84mBr, 3.41 ± 0.37, 3.35 ± 0.37, and 3.81 ± 0.42 mb for 84gBr, and roughly 8.79 ± 0.58, 9.36 ± 0.62, and 9.26 ± 0.62 mb for 84Se, respectively.



中文翻译:

在14 MeV的中子能附近测量232Th(n,f)XZ84反应的裂变截面。

根据来自DT源的中子测量了中子诱发的232 Th(n,f)84 Se,232 Th(n,f)84m Br,232 Th(n,f)84g Br反应的裂变截面。测量从T(d,n)4 He反应发射的α粒子以监测中子通量,同时使用90 Zr(n,2n)89 Zr与93 Nb(n,2n)92m Nb反应的比率确定中子能量。用校准良好的HPGe-γ检测器测量样品的伽马射线活性。在232中子能量为14.1±0.3、14.5±0.3和14.7±0.1 MeV时的Th(n,f)反应,对于84m Br,3.41±0.37,横截面分别为2.74±0.23、2.75±0.25和2.30±0.21 mb ,对于84g Br,分别为3.35±0.37和3.81±0.42 mb,对于84 Se,分别为大约8.79±0.58、9.36±0.62和9.26±0.62 mb 。

更新日期:2020-06-03
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