Investigation of fission properties and evaporation residue measurement in the reactions using 238U target nucleus

K. Nishio, H. Ikezoe, S. Hofmann, D. Ackermann, S. Antalic, Y. Aritomo, V. F. Comas, Ch E. Düllmann, A. Gorshkov, R. Graeger, K. Hagino, S. Heinz, J. A. Heredia, K. Hirose, J. Khuyagbaatar, B. Kindler, I. Kojouharov, B. Lommel, H. Makii, R. MannS. Mitsuoka, Y. Nagame, I. Nishinaka, T. Ohtsuki, A. G. Popeko, S. Saro, M. Schädel, A. Türler, Y. Wakabayashi, Y. Watanabe, A. Yakushev, A. V. Yeremin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


Fragment mass distributions for fission after full momentum transfer were measured in the reactions of 30Si,34,36 S,31P,40Ar + 238U at bombarding energies around the Coulomb barrier. Mass distributions change significantly as a function of incident beam energy. The asymmetric fission probability increases at sub-barrier energy. The phenomenon is interpreted as an enhanced quasifission probability owing to orientation effects on fusion and/or quasifission. The evaporation residue (ER) cross sections were measured in the reactions of 30Si + 238U and 34S + 238U to obtain information on fusion. In the latter reaction, significant suppression of fusion was implied. This suggests that fission events different from compound nucleus are included in the masssymmetric fragments. The results are supported by a model calculation based on a dynamical calculation using Langevin equation, in which the mass distribution for fusion-fission and quasifission fragments are separately determined.

Original languageEnglish
Title of host publication5th International Conference, FUSION 2011
EditorsD. Lacroix, Ch. Schmitt, A. Navin, H. Goutte, M. Rejmund
PublisherEDP Sciences
ISBN (Electronic)9782759806935
Publication statusPublished - 2011 Oct 19
Event5th International Conference on FUSION 2011 - Saint-Malo, France
Duration: 2011 May 22011 May 6

Publication series

NameEPJ Web of Conferences
ISSN (Print)2101-6275
ISSN (Electronic)2100-014X


Other5th International Conference on FUSION 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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