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Herrick, D.R. and Sinanoglu, O. (1975) Comparison of doubly-excited helium energy levels, isoelectronic series, autoionization lifetimes, and group-theoretical configure- tion-mixing predictions with large-configuration-interac- tion calculations and experimental spectra. Physical Review A, 11, 97-110. doi:10.1103/PhysRevA.11.97

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• TITLE: Modified atomic orbital theory applied to the calculation of high-lying 2(K,T)n±1,3P° rydberg series of he-like ions

  AUTHORS: Ibrahima Sakho

  KEYWORDS: Atomic Orbital Theory; Screening constant; Semi-empirical calculations; autoionizing states; Rydberg series; helium-like ions

  JOURNAL NAME: Natural Science, Vol.4 No.1, December 31, 2011

  ABSTRACT: The 2(1,0)n-1P°, 2(1,0)n +3P°, 2(0,1)n+1P°, and 2(0,1)n-3P° intershell Rydberg series of the helium-like ions are investigated in the framework of the modified Atomic Orbital Theory (MAOT). High-lying energy resonances of He and excitation energy of the he- lium-like Li+ up to n = 10 are tabulated. In addition, total energy positions for low-lying states (n1,3P° autoionizing states of two-electron systems.