Angular Distributions of Fast Photoneutrons from Pb, Bi and Ta

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概要

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• Using a stilbene scintillation detector, the angular distributions of fast photoneutrons of energies greater than two bias values of 7.4 MeV and 8.7 MeV were measured for Pb, Bi and Ta at 25.5 MeV end point energy of the bremsstrahlung. For Pb and Bi, the angular distributions were found to be asymmetric about 90 degrees with respect to the gamma-ray beam axis and were strongly peaked in a forward direction, but in the case of Ta not so obviously. The angular distributions were fitted to W(θ)=A+B sin^2θ+C cosθ, using a least squares analysis. The present experiment indicates that, in the high energy region of the (γ,n) spectrum, C/A increases with the detecting threshold energy for neutrons and on the otherwise B/A decreases with the energy.

• 社団法人日本物理学会の論文
• 1969-01-05

著者

• TANAKA Eiji

  Department of Orthodontics and Craniofacial Developmental Biology, Hiroshima University Graduate Sch

• Tsubota Hiroaki

  Department of Physics,College of General Education,Tohoku University

• Tanaka Eiji

  Department Of Digestion And Cardiovascular Medicine University Of Tokushima

• MUTSURO Naoshi

  Department of Physics, Tohoku University

• KANAZAWA Masaaki

  Department of Physics, Tohoku University

• Tsubota Hiroaki

  Department Of Physics College Of General Of Education Tohoku University

• Tsubota Hiroaki

  Department Of Physics Tohoku University:(present Address) College Of General Education Tohoku Univer

• Tanaka Eiji

  Department Of Physics Tohoku University

• Ishimaru Hajime

  Department Of Physics Tohoku University:(present Address) Institute For Plasma Physics Nagoya Univer

• Ishimaru Hajime

  Department Of Physics Faculty Of Science University Of Tokyo

• FUJIWARA Noboru

  Department of Physics, Tohoku University

• AIZAWA Teruo

  Department of Physics, Tohoku University

• Aizawa Teruo

  Department Of Physics Tohoku University:(present Address) Institute For Nuclear Study University Of

• Mutsuro Naoshi

  Department Of Physic Tohoku University

• Kanazawa Masaaki

  Department Of Physics Tohoku University

• Kanazawa Masaaki

  Department Of Oral Surgery School Of Dentistry Health Sciences University Of Hokkaido

• Fujiwara Noboru

  Department Of Physics Tohoku University:(present Address) Keage Laboratory Of Nuclear Science Instit

• Fujiwara Noboru

  Department Of Information And Computer Sciences Nara Women's University

• Tsubota Hiroaki

  Department Of Physics College Of General Education Tohoku University

• FUJIWARA Noboru

  Department of Physics, Tohoku University:(Present address) Keage Laboratory of Nuclear Science, Institute for Chemical Research, Kyoto University

• TSUBOTA Hiroaki

  Department of Physics, Tohoku University:(Present address) College of General Education, Tohoku University

• AIZAWA Teruo

  Department of Physics, Tohoku University:(Present address) Institute for Nuclear Study, University of Tokyo

• ISHIMARU Hajime

  Department of Physics, Tohoku University:(Present address) Institute for Plasma Physics, Nagoya University

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