Dynamical aspect of subbarrier
fusion reaction in
light heavy ion systems, M. Huang, Institute
of Modern
Physics, CAS, P. R. China − Subbarrier fusion of the 7Li+12C
reaction is studied, using an antisymmetrized molecular dynamics
model (AMD)
with an after burner, GEMINI.In AMD, 7Li
shows an alpha+triton structure at its ground state and it is
significantly
deformed. 12C
is nearly
spherical, though it has a 3-alpha cluster structure. Simulations
are made near
the Coulomb barrier energies, i.e., Ecm = 3-7 MeV. The cluster structure in 7Li
takes
a significant role on the fusion reaction, both in the complete
and incomplete
fusion channels. Detail
comparisons are
made with the experimental result of Mukherjee et al. (Nucl. Phys. A596,
299 (1996)), in which a characteristic gamma ray technique was
employed. The total
fusion cross section above the
Coulomb barrier is reasonably well reproduced, whereas the fusion
cross
sections below the barrier are underestimated by the simulation.
The cross
section for the different residue channels is also compared in
detail. Some
differences are observed, which may indicate that the cluster
structure play a
significant role in the entrance channel on subbarrier fusion
reactions between
light nuclei.