Relativistic corrections to the reaction kinematic parameters were made for elastic scattering of ^6Li, ^12C and ^40Ar from ^40Ca,^90Zr and ^208Pb targets at incident energies between 20 and 100 MeV/nucleon. The results of optical model calculations show that the efects of such corrections are important when describing the angular distributions of elastic scattering cross sections for heavy ion scattering at incident energies as low as around 40 MeV/nucleon. The efects on the total reaction cross sections on the other hand, were found to be small within the energy range studied when the optical model potential is fixed.
Continuum discretised coupled-channels （CDCC） method with a 10Be（0＋） ＋ n two-body cluster model is applied to systematically analyze the elastic scattering of the halo nucleus alBe from the proton target at various incident energies below 100 MeV/nucleon. Using the renormalized 10Be-p potential deduced from the 10Be ＋ p elastic scattering data, the differential cross sections of 11 Be ＋ p scattering are well reproduced by the CDCC calculations without any further adjustment parameters, demonstrating the applicability of this approach for describing the scattering of exotic nuclei based on the scattering of the less exotic core nuclei.
The isoscalar and isovector collective multipole excitations in exotic nuclei are studied in the framework of a fully self-consistent relativistic continuum random phase approximation （RCRPA）. In this method the contri- bution of the continuum spectrum to nuclear excitations is treated exactly by the single particle Green＇s function. Different from the cases in stable nuclei, there are strong low-energy excitations in neutron-rich nuclei and proton-rich nuclei. The neutron or proton excess pushes the centroid of the strength function to lower energies and increases the fragmentation of the strength distribution. The effect of treating the contribution of continuum exactly is also discussed.
