ATOMIC DATA FROM THE IRON PROJECT .14. ELECTRON-IMPACT EXCITATION OF THE FE-XIV FINE-STRUCTURE TRANSITION P-2(1 2)O-P-2(3/2)O/

We calculate collision strengths and collision rates for electron exci tation of the 2P(1/2)(o)-P-2(3/2)o ground term finestructure transitio n in Fe XIV, the coronal green line at 5303 Angstrom. The collision st rength for the green line is found to be strongly enhanced by resonanc es for the first 4 Rydberg above the excitation threshold, and as a re sult the collision rates are found to be significantly larger than oth er recently published results, even at coronal temperatures. The calcu lations are carried out using the R-matrix formulation of the close-co upling approximation.