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The close coupling R-matrix method is used to calculate cross-sections for photoionization of Mg III from its first three excited states. Configuration interaction wave functions are used to represent two target states of Mg III retained in the R-matrix expansion. The positions and effective quantum numbers for the Rydberg series converging to the excited state 2s22p62Se of the residual ion,...
The R-matrix method is used to calculate the total photoionization cross-sections from the ground 2s22p61Se and the first three excited 2s22p53p3,1Se states of Al IV, for photon energies ranging from the first ionization threshold to just above the second threshold of the residual ion Al V. The two lowest LS terms of Al V − 2s22p52P0, 2s2p62Se, 2s2p62Se, represented by sophisticated...
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