Nuclear-charge polarization at scission in the 12 MeV proton-induced fission of 232Th |
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Authors: | I. Nishinaka H. Nakahara Y. Nagame |
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Affiliation: | (1) Japan Atomic Energy Agency, 319-1195 Tokai-mura, Naka-gun, Ibaraki, Japan;(2) Tokyo Metropolitan University, 192-0397 Minami-Ohsawa, Hachioji, Tokyo, Japan |
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Abstract: | The most probable charges of secondary fragments, produced after neutron evaporation from primary fragments, have been evaluated using fractional cumulative and mass yields in the 12MeV proton-induced fission of 232Th . The nuclear-charge polarization of primary fragments at scission has been obtained by correcting the most probable charge of secondary fragments for neutron evaporation. The fragment mass dependence of the nuclear-charge polarization at scission shows good agreement with that for thermal neutron-induced fission of 235U , indicating that the nuclear-charge polarization is nearly insensitive to mass and excitation energy of the fissioning nucleus for asymmetric fission in the actinide region. |
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Keywords: | 25.85.-w Fission reactions 25.85.Ge Charged-particle-induced fission 24.75.+i General properties of fission |
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