title: Large enhancement of the sub-barrier fusion probability for a halo nucleus
abstract: 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.
authors.affiliation: DSM/DAPNIA, CEA SACLAY, 91191 Gif-sur-Yvette, France and University of Napoli and INFN Sezione di Napoli, Napoli, Italy.
authors.initials: M
authors.lastname: Trotta
authors.initials: JL
authors.lastname: Sida
authors.initials: N
authors.lastname: Alamanos
authors.initials: A
authors.lastname: Andreyev
authors.initials: F
authors.lastname: Auger
authors.initials: DL
authors.lastname: Balabanski
authors.initials: C
authors.lastname: Borcea
authors.initials: N
authors.lastname: Coulier
authors.initials: A
authors.lastname: Drouart
authors.initials: DJ
authors.lastname: Durand
authors.initials: G
authors.lastname: Georgiev
authors.initials: A
authors.lastname: Gillibert
authors.initials: JD
authors.lastname: Hinnefeld
authors.initials: M
authors.lastname: Huyse
authors.initials: C
authors.lastname: Jouanne
authors.initials: V
authors.lastname: Lapoux
authors.initials: A
authors.lastname: Lepine
authors.initials: A
authors.lastname: Lumbroso
authors.initials: F
authors.lastname: Marie
authors.initials: A
authors.lastname: Musumarra
authors.initials: G
authors.lastname: Neyens
authors.initials: S
authors.lastname: Ottini
authors.initials: R
authors.lastname: Raabe
authors.initials: S
authors.lastname: Ternier
authors.lastname: Van Duppen P
authors.initials: K
authors.lastname: Vyvey