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Phys. Rev. Lett. 84, 2342–2345 (2000)

Large Enhancement of the Sub-barrier Fusion Probability for a Halo Nucleus

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M. Trotta et al.
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Received 27 September 1999; published in the issue dated 13 March 2000

The fusion-fission cross sections of the 4He+238U and 6He+238U systems have been measured, at Louvain-la-Neuve, for energies around and below the Coulomb barrier, using an array of Si detectors surrounding a UF4 target. The data taken with 4He are in good agreement with previous data and with the coupled channel fusion calculation performed with ECIS. The 6He data show a regular trend with a large enhancement below the barrier which is attributed to the halo structure of the 6He nucleus.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.2342
DOI:
10.1103/PhysRevLett.84.2342
PACS:
21.10.Gv, 25.60.-t, 25.70.Jj, 27.20.+n