Nuclear Reactions induced by the 14MeV Neutrons

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概要

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• The nuclear reactions of Al, Fe, Cu, Zn, Mo and Ag produced by the neutrons from the T^3(d, n) He^4 reaction have been investigated by means of the activation technique. The absolute numbers of activated nuclei in samples were determined by measuring the beta-rays from the samples with a 4π-proportional counter and applying the "method of extrapolation." By utilizing the variations of neutron energies in the laboratory system, an excitation curve of Mo^<92>(n, 2n)Mo^91 reaction was obtained. For the cases of Al, Cl, Zn and Ag, only the gradients of excitation curves were also found. The experimental cross sections were determined as follows: 87.2mb±8% for Al^<27>(n, p)Mg^<27>, 120mb±12% for Al^<27>(n, α)Na^<24>, 144mb±13% for Fe^<55>(n, p)Mn^<56>, 556mb±5% for Cu^<63>(u, 2n)Cu^<62>, 119mb±12% for Zn^<64>(n, 2n)Zn^<63>, 60.2mb±12% for Zn^<66>(n, p)Cu^<66>, 132mb±16% for Mo^<92>(n, 2n)Mo^<91> 458mb±11% for Ag^<107>(n, 2n)Ag^<106>, and 604mb±11% for Ag^<109>(n, 2n)Ag^<108>. Comparing these results with the predictions by the statistical theory of Weisskopf et al. it was found that they agreed with each other within about factor 3, but in details, there were some discrepancies between them. The relative behavior of excitation curve of the Mo^<92>(n, 2n)Mo reaction seems to be consistent with the above theory, though with respect to the absolute values, the theoretical curve lies above the experimental one by about 2.4.

• 社団法人日本物理学会の論文
• 1957-05-05

著者

• Yasumi Shinjiro

  Department Of Physics Faculity Of Science Kyoto University

• Yasumi Shinjiro

  Department Of Physics Konan University

関連論文

• Fine Structure in the Giant Resonance for Cu^ and Ag^(γ,n) Reactions
• Absolute Cross Sections of the (γ, η) Reaction for Cu^, Zn^ and Ag^
• Absolute Cross Section of the Reaction Cu^(γ, n)Cu^ for Lithium Gamma Rays
• The Photo-disintegration of Be by the High Energy γ-Rays.
• Deuterons from Carbon Irradiated by High Energy Bremsstrahlung
• Nuclear Reactions induced by the 14MeV Neutrons

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