Analysis of 8He+target elastic scattering systems with optical model approximation

Nuclear reaction studies performed by using the weakly bound exotic nuclei have very major role for nuclear astrophysics and nuclear physics. In the contrast to much more theoretical and experimental studies on exotic nuclei, neutron-rich exotic nuclei in which neutrons localled around core performing skin and weakly-bound structure of nuclei have not been analyzed. In this thesis work, 8He neutron-rich nucleus interacted with stable target nuclei having different masses have been analyzed within Optic Model (OM) framework both using phenomenological and microscopical potentials. Also, in addition to Optical Model, the elastic scattering systems have been sudied with Coupled-Reaction Channel Model, valance nucleons, 4n, performing skin structure of 8He nucleus and excitation to the L=2 level. At the end of therotical calculations, we have got the parameter set that explain experimental datas very well. For the radius parameter value of imaginary part of nuclear potential, rw=1.56 fm, which is responsible for absession of Coulomb peak observed in interactions between weakly-bound exotic nuclei and stable-heavy massed target nuclei. For the 8He exotic nucleus, in analysis of microscopic OM, experimental datas are fitted very succesfully and error percentage values are very low. For incoming energies above the barrier energies, contribution to the total cross-section observed very low in Coupled-Channel (CC) calculations. Error analysis in both OM and CC calculation have been found as small . Theoretical calculations have been pretty good fit to experimental data.