Effect of finite range of the NN force and NN cross section on reaction cross section for neutron rich nuclei -: art. no. 027601

The reaction cross section (sigma(R)) is calculated using the optical limit of the Glauber theory. A density-dependent effective nucleon-nucleon (NN) cross section sigma(NN) is considered. Finite and zero range NN interactions are studied. The effect of finite range and an appropriate local density can increase sigma(R) up to 20% compared to the zero range at constant density (0.16 fm(-3)), while a zero range calculation with free NN cross section increases sigma(R) up to 13%. These factors affect the values of the rms radii for neutron rich nuclei extracted from sigma(R).