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|標題:||Doubly excited P-1,3(e) resonances in he between the N=2 and 3 He+ thresholds||作者:||Chen, M.K.||關鍵字:||spline basis functions;d-1,3(e) resonances;s-p;states;transitions;helium;s-1,3(e);atom||Project:||Chinese Journal of Physics||期刊/報告no：:||Chinese Journal of Physics, Volume 43, Issue 2, Page(s) 329-336.||摘要:||
We calculated the energies and widths of seventeen singlet and seventeen triplet P-e resonant states of He between the N=2 and 3 thresholds. These states are classified with quantum numbers K, T, and A. For the P-1(e) states there are nine members in the (3)(1, 1)(n)(-) (4 <= n <= 12) series and eight members in the (3)(-1, 1)(n)(-) (4 <= n <= 11) series. There are nine members in the (3)(1, 1)(n)(+) (3 <= n <= 11) series and eight members in the (3)(-1, 1)(n)(+) (3 <= n <= 10) series for the P-3(e) States. The energies and widths are compared with other theoretical results. Only a few results for low P-1,3(e) states can be found in the literature to the author's knowledge, because of the problem of the slow convergence and large uncertainties. Energy values of the high P-1,3(e) states are nearly degenerate. We improved the slow convergence and large uncertainties in calculating these nearly degenerate states to obtain stable results.
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