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