Atomic data from the IRON Project - XXXVIII. Electron impact excitation ofthe fine-structure transitions in the n=3 complex of Fe XV

As part of a systematic study of the collisional properties of Fe ions carr ied out by the IRON Project, electron excitation rates (effective collision strengths) are computed for all the fine-structure transitions within the n = 3 complex of Fe xv in the electron temperature range 10(5) less than or equal to T/K < 10(7). Configuration-interaction target wavefunctions are g enerated with the atomic structure code SUPERSTRUCTURE, and collision stren gths are computed in the close-coupling approximation with a Breit-Pauli R- matrix package. Special care is taken to resolve the resonance structure an d to ensure the convergence of the partial wave expansion, specially for di pole allowed transitions. By comparing with previously calculated collision strengths in the distorted wave approximation, a 20% accuracy rating is as signed to transitions with effective collision strengths Y(T) > 10(-2).