Neutron emission, mass distribution and energetics in 14,5 MeV-neutron induced fission of uranium-238.

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概要

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• A study is performed on 14.5 MeV-neutron induced fission of <SUP>238</SUP>U by means of three-parameter experiment in which the energies of both fragments and the time-of-flight of one fragment are measured. A mosaic-arrayed surface barrier detector of large sensitive area is used at the remote end of a flight tube. The pre- and post-neutron-emission frag-ment mass distributions are obtained, together with the average total kinetic energy of fragment as a function of its mass. The average number of neutrons emitted from an individual fragment and the average total number of emitted neutrons are also derived as a function of fragment mass. The results agree well with those calculated by the method developed in our laboratory for medium-excitation fission. The average number of emitted neutrons and the mass distribution of fission fragment are derived for the re-spective reactions of first-, second- and third-chance fission.

• 一般社団法人 日本原子力学会の論文

著者

• Mori Yoshiharu

  Department Of Physics Nagoya University

• Katase Akira

  Department Of Nuclear Engineering Faculty Of Engineering Kyushu University

• Wakuta Yoshihisa

  Department Of Nuclear Engineering Faculty Of Engineering Kyushu University

• Sonoda Masateru

  Department Of Nuclear Engineering Faculty Of Engineering Kyushu University

• Yamamoto Hisao

  Department of Applied Chemistry for Resources, Tokyo University of Agriculture and Technology

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