WHAT CAN WE LEARN FROM THE DIRECT REACTIONS WITH 6He AND 8He SECONDARY BEAMS ON LIGHT TARGETS AT 25-32 MeV/n BEAM ENERGY?

The study of 6He and sHe elastic scattering on a helium target and 2-neutron transfer reactions on protons are reported. The elastic scattering data are discussed in terms of the backward angle enhancement caused by structural effects. Abnormally large total reaction cross section for the sHe+a system is found. The transfer reactions appear to be an important source of the information on neutron correlations in these nuclei.