Author:

Keywords:

heavy-ion fusion, weakly-bound nuclei, subbarrier fusion, coulomb barrier, break-up, halo, enhancement, probability, be-9+pb-208, channels, Science & Technology, Physical Sciences, Physics, Nuclear, Physics, HEAVY-ION FUSION, WEAKLY-BOUND NUCLEI, SUBBARRIER FUSION, COULOMB BARRIER, BREAK-UP, HALO, ENHANCEMENT, PROBABILITY, BE-9+PB-208, CHANNELS, 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, 5106 Nuclear and plasma physics

Abstract:

We present new cross section data for the complete fusion of the weakly bound systems Be-7,Be-9 and Li-7 on U-238 at energies around the Coulomb barrier. In the same measurement, yields for direct processes and incomplete fusion are detected. For all systems, a suppression of the complete fusion cross section around and above the barrier is observed. At energies below the barrier, the fusion of the Be-7+U-238 system shows no enhancement with respect to simple model predictions.