Absolute Measurements of Activation Cross Sections of 27Al(n,p)27Mg, 27Al(n,.ALPHA.)24Na, 56Fe(n,p)56Mn, 90Zr(n,2n)89m+gZr and 93Nb(n,2n)92mNb at Energy Range of 13.3-14.9MeV.
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概要
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The reaction cross sections of <SUP>27</SUP>Al(n, p)<SUP>27</SUP>Mg, <SUP>27</SUP>Al(n, α)<SUP>24</SUP>Na, <SUP>56</SUP>Fe(n, p)<SUP>56</SUP>Mn, <SUP>90</SUP>Zr(n, 2n)<SUP>89m+g</SUP>Zr and <SUP>93</SUP>Nb(n, 2n)<SUP>92m</SUP>Nb have been measured by the activation method in an energy range of 13.3 14.9 MeV using the intense D-T neutron source, FNS. Absolute flux was determined by the associated α-particle counting method incorporated with neutron spectra obtained from both a Monte Carlo calculation and a time-of-flight measurement. Corrections were extensively performed not only for the neutron flux determination, but also for the low energy neutron contribution to the reaction rates. The present data were compared with comprehensive evaluations as well as recent experimental data. The measured cross sections of <SUP>27</SUP>Al(n, α)<SUP>24</SUP>Na, <SUP>56</SUP>Fe(n, p)<SUP>56</SUP>Mn and<SUP> 90</SUP>Zr(n, 2n)<SUP>89m+g</SUP>Zr are generally in good agreement within experimental errors with the values in both the JENDL Dosimetry File and IRDF-90. It is also shown that there are the overestimation of the cross sections for <SUP>93</SUP>Nb(n, 2n)<SUP>92m</SUP>Nb in the JENDL Dosimetry File, and the overestimation and underestimation of the cross section for <SUP>27</SUP>Al(n, p)<SUP>27</SUP>Mg in the JENDL Dosimetry File and IRDF-90, respectively.
- 一般社団法人 日本原子力学会の論文
著者
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Ikeda Yujiro
Department Of Nuclear Engineering Nagoya University
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Konno Chikara
Department Of Materials Science And Engineering Japan Atomic Energy Research Institute
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Maekawa Hiroshi
Department Of Mechanical And Control Engineering University Of Electro-communications
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OISHI Koji
Institute of Technology, Shimizu Corp.
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OYAMA Yukio
Department of Nuclear Engineering, Japan Atomic Energy Research Institute
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OYAMA Yukio
Department of Reactor Engineering, Japan Atomic Energy Research Institute
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KOSAKO Kazuaki
Department of Reactor Engineering, Japan Atomic Energy Research Institute
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