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Phys. Rev. C 78, 017601 (2008) [4 pages]

Fusion hindrance for a positive Q-value system

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C. L. Jiang1, B. B. Back1, H. Esbensen1, J. P. Greene1, R. V. F. Janssens1, D. J. Henderson1, H. Y. Lee1, C. J. Lister1, M. Notani1, R. C. Pardo1, N. Patel1, K. E. Rehm1, D. Seweryniak1, B. Shumard1, X. Wang1, S. Zhu1, S. Mişicu2, P. Collon3, and X. D. Tang3
1Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
2National Institute for Nuclear Physics, Bucharest, P.O. Box MG6, Romania
3University of Notre Dame, Notre Dame, Indiana 46556, USA

Received 7 May 2008; published 8 July 2008

An excitation function for the fusion reaction 28Si + 30Si (Q=14.3MeV) has been measured down to 40μb. Deviations from the behavior predicted by the optical model and standard coupled-channels calculations have been observed in this system. The fusion cross sections can be reproduced by a shallow potential model well, which was originally developed to explain the hindrance of heavy-ion fusion for systems with negative Q-values.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.78.017601
DOI:
10.1103/PhysRevC.78.017601
PACS:
25.70.Jj, 25.60.Pj, 26.50.+x, 26.30.-k
 
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