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Fig. 2

image

Photo-ionisation cross-section of 3d54s2 a 6S ground term of Mn I. The present R-matrix cross-section is depicted by the solid line. The central-field cross-sections of Verner & Yakovlev (1995) and Reilman & Manson (1979) are indicated by the dashed line and square dots, respectively. Above the figure we show the energies of all 3d54s, 3d6, and 3d4 4s2 thresholds.

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