First evidence of fusion hindrance for a small Q-value system

C. L. Jiang*, B. B. Back, H. Esbensen, R. V.F. Janssens, Ş Mişicu, K. E. Rehm, P. Collon, C. N. Davids, J. Greene, D. J. Henderson, L. Jisonna, S. Kurtz, C. J. Lister, M. Notani, M. Paul, R. Pardo, D. Peterson, D. Seweryniak, B. Shumard, X. D. TangI. Tanihata, X. Wang, S. Zhu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

The excitation function for the fusion-evaporation reaction 28Si + 64Ni has been measured down to a cross section of 25 nb. This is the first observation of fusion hindrance at extreme sub-barrier energies for a system with a small, negative Q-value (- 1.78   MeV). This result is further proof that heavy-ion fusion hindrance, reported earlier only for systems with large, negative Q-values, is a general phenomenon. The measured behavior can be reproduced by coupled-channels calculations with a modified ion-ion potential incorporating the effects of nuclear incompressibility.

Original languageEnglish
Pages (from-to)18-22
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume640
Issue number1-2
DOIs
StatePublished - 31 Aug 2006

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