Calculation of dielectronic recombination of lithium-like Ni25 +

We present theoretical studies of dielectronic recombination for the ground state three-electron system of Lithium-like Ni²⁵⁺(1s² 2s_1/2). The Flexible Atomic Code, using the jj coupling scheme, was employed in our calculations. We calculated the energies of the resonances and their resonance strengths during the excitation from the 2 s to the 2p state, with incident electron capture occurring in shells between n = 13 and n = 19. We found excellent agreement between our results and the experimental data regarding the energy positions of the resonances. Additionally, we observed agreement in the general trend for the resonance strengths; however, this agreement is less pronounced than that for the energy positions, particularly for the 2p_3/2 state at some resonances.