Statistical Analysis of Fast Neutron Total Cross Sections of Silicon, Phosphor, Sulfur, and Chlorine

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概要

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• The neutron total cross sections of silicon, phosphor, sulfur, and chlorine in the energy range from 3 to 5 MeV have been measured with an energy resolution of 20 to 50 keV, and the variations of the cross sections with energy have been analyzed statistically under the assumption that the variations arise from the fluctuation of the neutron widths and spacings of the resonances which are covered by the energy resolution. The average spacings D, which are obtained by the present analysis, are 1.3 0.13, 0.54, and 0.04 keV for silicon phosphor, sulfur, and chlorine, respectively. These values agree well with those calculated by Cameron's semi-empirical formula. The neutron strength functions <F_n^0>/D_1 which are obtaind also by the present analysis, are 2.9, 3.9, 3.8, and 4.7×10^<-4> for the respective elements, and are consistent with those obtained by the low-energy-neutron experiments. The correlation between the fluctuation of the total cross sections and the energy are obtained, and it is pointed out that there appear no signs of the fluctuations due to the existence of the large resonances, the width of which are comparable with or larger than the energy interval of about 100 keV.

• 社団法人日本物理学会の論文
• 1963-05-05

著者

• TSUKADA K.

  Japan Atomic Energy Agency

• Tsukada Kineo

  Japan Atomic Energy Research Institute

• TANAKA Osamu

  Japan Atomic Energy Research Institute

関連論文

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• Orientation effects of deformed ^U target nuclei on the fusion probability for heavy element synthesis(International Workshop on Nuclear Structure-New Pictures in the Extended Isospin Space(NS07)-)
• Fission Characteristics of Individual Deformation Paths in Heavy Elements
• Production Cross Sections of ^Rf and ^Db in Bombardments of ^Cm with ^O and ^F Ions
• Systematic Studies of Asymmetric Mass Distributions in Proton-induced Fission of Actinides
• Statistical Analysis of Fast Neutron Total Cross Sections of Silicon, Phosphor, Sulfur, and Chlorine
• Inelastic Scattering of Neutrons by the Time-of-Flight Method
• Total Cross Sections of Carbon, Oxygen, Fluorine and Thorium for Fast Neutrons

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