Department of Physics Chemistry, UFR Sciences and Technologies, University of Thies, Thies, Senegal;
Department of Physics, Faculty of Sciences and Techniques, University Cheikh Anta Diop of Dakar, Dakar, Senegal;
Department of Physics, UFR Sciences and Technologies, University Assane Seck of Ziguinchor, Ziguinchor, Senegal;
Doubly Excited States; Helium Isoelectronic Sequence; Screening Constant per Unit Nuclear Charge (SCUNC); Correlated Wave Function; Resonance Energy; Excitation Energies;