Absolute Cross Sections of the (γ, η) Reaction for Cu^<63>, Zn^<64> and Ag^<109>
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概要
- 論文の詳細を見る
The photonuclear reaction cross section of Cu^<63>(γ, η)Cu^<52> has been frequently used as the standard for the (γ, η) reactions, but the measured values by many workers do not agree with one another and can be roughly divided into two groups, namely, about 100mb group and about 50mb group. It appears that the former group contains the values obtained mainly by measurements by use of bremsstrahlungs, while the latter those obtained mainly with Li-ρ γ-rays. We attempted to re-determine the (γ, η) cross section for copper, zinc and silver by Li-ρ γ-ray. Absolute measurement of γ-quanta was performed by Hough's method, and reaction yields were determined by the activation method in which the absolute numbers of activated nuclei in samples were determined by measuring the β-ray with a 4π-proportional counter and applying the "method of extrapolation". The cross sections of Cu^<63>, Zn^<64> and Ag^<109> for 17.6Mev γ-rays were found to be 42.5mb±15%, 23.3mb±18% and 61.5mb±16% respectively. Experimental cross sections so far obtained by many workers are compiled in Table II and some discussions are given.
- 社団法人日本物理学会の論文
- 1959-06-05
著者
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NAKAMURA Teruo
Department of Health Science, Hirosaki University School of Medicine
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Takamatsu Kunio
Department Of Physics Faculty Of Science Kyoto University
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Nakamura Teruo
Department Of Physics Faculty Of Science Kyoto University
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Fukunaga Kiyoji
Department Of Physics Faculty Of Science Kyoto University
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YATA Minoru
Department of Physics, Faculty of Science, Kyoto University
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YASUMI Shinjiro
Department of Physics, Faculty of Science, Kyoto University
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Yata Minoru
Department Of Physics Faculty Of Science Kyoto University:(present)sumitomo Electric Industries Co.
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Yasumi Shinjiro
Department Of Physics Faculty Of Science Kyoto University
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Yasumi Shinjiro
Department Of Physics Faculity Of Science Kyoto University
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Nakamura Teruo
Department Of Health Science Hirosaki University School Of Medicine
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TAKAMATSU Kunio
Department of Engineering, Miyazaki University
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TAKAMATSU Kunio
Department of Physics, Faculty of Science, University of Kyoto
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YATA Minoru
Department of Physics, Faculty of Science, University of Kyoto
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NAKAMURA Teruo
Department of Physics, Faculty of Science, University of Kyoto
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Nakamura Teruo
Department of Food Science, Tezukayama University
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