Symmetric and Asymmetric Fission of U^236 Induced by Helium Ions

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概要

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• The energetics of helium-ion-induced fission of U^236 has been investigated, a back-to-back solid state detector system being used. The measurements have been made at two center-of-mass angles 90°and 160° and at bombarding energies of 27.8, 30.4, 32.6, 34.2 and 35.6Mev. It Is found that the position of the asymmetric fission peak in the kinetic energy contour diagram and the most probable values of E_L, E_π and Eκ are nearly independent of the excitation energy of compound nucleus. From the comparison with results obtained so far at lower energies, it is probably concluded that the average total kinetic energy in symmetric Fission increases with the excitation energy of fissioning nucleus but the one at the peak in the mass yield distribution is approximately independent of the excitation energy. Some systematics are derived for the average total kinetic energies. The average excitation energy of fragments remains nearly constant in symmetric fission but not in asymmetric fission as the excitation energy of fssioning nucleus increases. The anisotropics for symmetric and asymmetric fission are probably consistent with a theoretical prediction.

• 社団法人日本物理学会の論文
• 1965-02-05

著者

• Seki Masao

  Department of Nuclear Engineering, Faculty of Engineering, Kyushu University

• Seki Masao

  Department Of Nuclear Engineering Faculty Of Engineering Kyushu University

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• Symmetric and Asymmetric Fission of U^236 Induced by Helium Ions

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