Figure 1: Ratio of effective collision strengths between the present 36- and 40-configuration calculations at T=9.8 10^{7} K. Only transitions from the ground level are shown. Circled points correspond to transitions where the final level is poorly matched (overlap less than 0.9) between the two calculations. | |
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Figure 2: Ratio of effective collision strengths between the present 36- and 40-configuration calculations at T=9.8 10^{3} K for transitions from the ground configuration to the 4l configurations: 4s (circles), 4p (open triangles), 4d (filled triangles), 4f (squares). | |
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Figure 3: Same as Fig. 2 but with T=9.8 10^{7} K. | |
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Figure 4: Effective collision strength for the 3-10 transition from the 40-configuration calculation (filled circles) and the 36-configuration calculation (open circles). | |
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Figure 5: Effective collision strength for the 2-31 (circles) and 3-27 (squares) transitions from the 40-configuration calculation (filled symbols) and the 36-configuration calculation (open symbols). | |
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Figure 6: Ratio of the effective collision strengths of transitions between the levels of the ground configuration from Berrington et al. (2000) to the present, 40-configuration calculation at a temperature of 2 10^{4} K. The filled symbols mark transitions where the agreement is worse than 20%. | |
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Figure 7: Effective collision strengths for the 1-7 (squares) and 8-9 (circles) transitions. Solid curves with filled symbols are the present, 40-configuration results and the dashed curves with open symbols are from Berrington et al. (2000). | |
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Figure 8: Effective collision strengths for the 6-7 (squares) and 5-7 (circles) transitions. Solid curves with filled symbols are the present, 40-configuration results and the dashed curves with open symbols are from Berrington et al. (2000). | |
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Figure 9: Comparison of results from Zeng et al. (2005) to the present 40-configuration results at T=5.80 10^{6} K. Points represent transitions from the ground configuration to levels in the 3d^{3} (circles), 4p (triangles), and 4f (squares) configurations. On the x-axis is shown the ratio of the A-coefficients from the Zeng et al. calculation to the present calculation; on the y-axis is the analagous ratio of the effective collision strengths. The dotted and dashed boxes correspond to agreement within 20% and 50%. The solid line marks where the ratios agree. | |
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Figure 10: Same as Fig. 10 except with T=1.16 10^{5} K. | |
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Figure 11: Collision strength for the 5-117 transition from the present, 40-configuration calculation (solid curve) and the (a) calculation of Zeng et al. (2005) (dashed curve with circles). | |
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Figure 12: Collision strength for the 1-27 transition from the present, 40-configuration calculation (solid curve) and the (a) calculation of Zeng et al. (2005) (dashed curve with circles). | |
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