Reaction dynamics of proton drip line nuclei at energies around the Coulomb barrier.

The nuclear drip line corresponds to zero binding for protons and neutrons,defining the boundary of nuclide landscape.Beyond the drip lines,nuclei become unbound,in respect to nucleon emis-sion.Nuclei located closest to the drip line,which are commonly referred to as drip line nuclei,may exhibit phenomena untypical for tightly bound nuclei in the valley of stability.For instance,it is well known that the nuclear size scales with the mass number.However,it was discovered by Tanihata et al.[1]in 1985 that,the neutron drip line nucleus 1(1)Li has an unusually large size com-parable to a heavy nucleus like 208Pb,with 208 nucleons.It was found that this lithium nucleus has two extremely weakly-bound neutrons orbiting far around the 9Li core,forming a"neutron halo".