Abstract
In this paper, we introduce a new method for calculation of energy levels in detail and give our results for several iso-spectrum-level series as examples: [He] 2s2p P1, [He] 2s2p P0, [He] 2s2p P2, and [He] 2s3s S1 series of Be-like sequence; [Ne] 3s3d D3/2 series and [Ne] 3s 3d D5/2 series of Al-like sequences; [Ne] 4p P1/2 series, [Ne] 5d D5/2 series, and [Ne] 6f F7/2 series of Na-like sequences. In the method I(Z) = Tlim(Z) − T (Z, n), where I(Z), Tlim(Z), and T (Z, n) denote ionization potential, series limit, and energy level of a given member, respectively. The expression of non-relativistic part of I(Z) is derived from weakest bound election potential model theory and relativistic effects of I(Z) are included by using a six-order polynomial in Z. Our results are compared with the experimental data and with those obtained by other theoretical method.
Published Version
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