International Journal of Academic and Applied Research (IJAAR)   Year: 2020 | Volume: 4 | Issue: 7 | Page No.: 143-150 Using Nuclear Shell Model to Calculate Energy Levels and Probability of Reduced Electric Quadruple Transition for 35S Isotope Ali K. Hasan, Zaid A. Mohamed Abstract: : In this paper, the OXBASH computer software has been used for apply the nuclear shell model to the sulfur isotope 35S in order to calculate the excitation energies and the probability for electric quadrupole transition B (E2) and by depending each of effective interactions w and hbusd that describe the interaction between a nucleon-nucleon in an sd space for the nucleus under study, which contains 19 nucleons in the model space and by considering the isotope of oxygen 16O as the closed inert core for it because it is a double magic nucleus. Our theoretical calculations have been compared with the experimental data available for this isotope and we have noted a good match with it.