Study of nuclear structure influencing fusion reactions
J. Khuyagbaatar1, K. Nishio2, D. Ackermann1, M. Block1, S. Heinz1, F.P. Heβberger1, S. Hofmann1, H. Ikezoe2, B. Kindler1, B. Lommel1, H. Makii2, S. Mitsuoka2, I. Nishinaka2, Y. Wakabayashi2 and S. Yan1,3
GSI Helmholzzentrum für Schwerionenforschung
2 Japan Atomic Energy Agency, 319-1184 Tokai, Ibaraki, Japan
3 China Institute of Atomic Energy, P.O. Box 275 (10), Beijing, China
Published online: 19 October 2011
The influence of the nuclear structure of projectile and target nuclei on the capture cross-sections was investigated in the fusion reactions 34S+204,206,208Pb and 36S+204,206,208Pb. Capture cross-sections were deduced from the fission fragments measured with multi-wire proportional counters. Significantly enhanced capture-fission cross-sections were observed for the 34S induced reactions compared to 36S at beam energies below the interaction barriers. The experimental results were compared to a coupled-channel calculation. The enhancement was explained by strong couplings to vibrational states of the 34S with 204,206,208Pb. The capture and evaporation residue cross-sections of 34S+208Pb and 36S+206Pb reactions which lead to the same compound nucleus 242Cf are compared and discussed.
© Owned by the authors, published by EDP Sciences, 2011