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APS » Journals » Phys. Rev. Lett. » Volume 89 » Issue 27
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Phys. Rev. Lett. 89, 272701 (2002) [4 pages]

Fusion Suppression and Sub-Barrier Breakup of Weakly Bound Nuclei

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D. J. Hinde1, M. Dasgupta1, B. R. Fulton2, C. R. Morton1, R. J. Wooliscroft3, A. C. Berriman1, and K. Hagino4
1Department of Nuclear Physics, Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200, Australia
2Department of Physics, University of York, York Y010 5DD, United Kingdom
3School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, United Kingdom
4Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan

Received 1 May 2002; published 17 December 2002

The mechanism for the large suppression of complete fusion in the 9Be+208Pb reaction has been investigated through measurement of sub-barrier breakup of 9Be. Excluding breakup through the 8Be ground state, whose lifetime is too long, a prompt breakup component remains, having sufficient probability to explain the observed suppression of complete fusion. This appears to be associated with interactions at the nuclear surface. The fusion suppression is predicted to be almost proportional to the charge of the target nucleus, making it most significant in reactions with heavy nuclei.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.272701
DOI:
10.1103/PhysRevLett.89.272701
PACS:
25.70.Jj, 25.70.Mn
 
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