Table 8: Comparison of effective collision strengths ($\Upsilon $) for some transitions of Ar XVII. ( $a{\pm }b \equiv $ $a\times $10$^{{\pm }b}$).
    Present Results Keenan et al. (1987)
Transition Temperature (log, K)
i j 6.80 7.00 7.20 6.80 7.00 7.20
1 2 1.118-3 9.531-4 7.946-4 9.454-4 8.319-4 7.184-4
1 3 4.873-4 4.345-4 3.729-4 4.385-4 3.931-4 3.444-4
1 4 1.568-3 1.408-3 1.224-3 1.356-3 1.246-3 1.131-3
1 5 1.847-3 1.876-3 1.886-3 1.641-3 1.673-3 1.724-3
1 6 2.417-3 2.157-3 1.847-3 2.191-3 1.963-3 1.719-3
1 7 6.271-3 6.979-3 7.698-3 6.053-3 6.694-3 7.655-3
1 8 2.717-4 2.352-4 1.995-4 1.428-4 1.385-4 1.307-4
1 9 1.306-4 1.174-4 1.016-4 7.931-5 7.679-5 7.179-5
1 10 4.002-4 3.625-4 3.173-4 2.527-4 2.484-4 2.379-4
1 11 3.803-4 3.854-4 3.841-4 2.193-4 2.462-4 2.732-4
1 12 6.360-4 5.715-4 4.945-4 2.917-4 3.081-4 3.068-4
1 13 6.430-5 5.353-5 4.327-5      
1 14 1.086-4 9.390-5 8.029-5      
1 15 1.435-4 1.198-4 9.700-5      
1 16 1.173-4 1.119-4 1.086-4      
1 17 1.270-3 1.404-3 1.518-3 9.962-4 1.143-3 1.345-3


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