Anomalous mixing of the w2Po3/2 and x6Po3/2 levels in Fe ii |
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| Authors: | M P Donnelly & A Hibbert |
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| Institution: | Department of Applied Mathematics and Theoretical Physics, The Queen's University of Belfast, Belfast BT7 1NN |
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| Abstract: | The neighbouring lines a 6D5/2– x 6Po3/2 (1272.617 ?) and a 6D5/2– w 2Po3/2 (1272.657 ?) have been observed in the UV spectrum of χ Lupi to be of comparable intensity. The latter, Δ S = 2, transition would be expected to be very weak. The two upper states should display negligible mixing. We give a detailed, quantitative discussion of how the two upper states are in fact strongly mixed through their mixing with 3d6(3D)4p 4Po3/2, and hence we explain the relative strengths of the two UV lines. |
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| Keywords: | atomic data |
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