Energy levels and radiative rates for transitions among the lowest 97 fine-structure levels belonging to the (1s 2 2s 2 2p 6 ) 3s 2 3p 2 , 3s3p 3 , 3s 2 3p3d, 3p 4 , 3s3p 2 3d and 3s 2 3d 2 configurations of Fe XIII have been calculated using the fully relativistic GRASP code. Additionally, collision strengths for transitions among these levels have been computed using the Dirac Atomic R-matrix Code (DARC) of Norrington & Grant (2004) . Radiative rates and oscillator strengths are tabulated for

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... all allowed transitions among the 97 fine-structure levels, while collision strengths are reported for some transitions at a few energies above thresholds. Comparisons are made with the available results, and the accuracy of the data is assessed.