  Spectra of coincident charged particles from the reactions induced by a 52
MeV 7Li beam incident on a beryllium target were measured. Strong contributions
of the 7Li quasi-free scattering off the alpha-cluster in 9Be nucleus were
observed. This observation supports the conclusions from the study of complete
fusion of weakly bound light nuclei at low energies that the "fragility" of the
nuclei makes their fusion less probable.
