Dirac R-matrix calculations of photoionization cross sections of Ni XII and atomic structure data of Ni XIII

Nazir R T^†, Bari M A, Bilal M, Sardar S, Nasim M H, Salahuddin M

(color online) Total PI cross sections in the excited state configuration 3s²3p⁴3d levels (⁴D_1/2, ⁴P_1/2, ²P_1/2, ²P_1/2, and ²S_1/2).