Effects of nuclear deformation and neutron transfer in capture process,   and origin of fusion hindrance at deep sub-barrier energies
  The roles of nuclear deformation and neutron transfer in sub-barrier capture process are studied within the quantum diffusion approach. The change of the deformations of colliding nuclei with neutron exchange can crucially influence the sub-barrier fusion. The comparison of the calculated capture cross section and the measured fusion cross section in various reactions at extreme sub- barrier energies gives us information about the fusion and quasifission. 
V. V. Sargsyan, G. G. Adamian, N. V. Antonenko, W. Scheid, and H. Q.   Zhang
nucl-th