ATOMIC DATA FROM THE IRON PROJECT .8. ELECTRON-EXCITATION OF THE 3D4 5DJ GROUND-STATE FINE-STRUCTURE TRANSITIONS IN TI-LIKE IONS V-II, CR-III, MN-IV, FE-V, CO-VI AND NI-VII

Electron excitation collision strengths for the 3d4 5DJ-J' ground term fine-structure transitions in titanium-like ions V II, Cr III, Mn IV, Fe V, Co VI and Ni VII are calculated using R-matrix techniques. The model target ion includes all 3d4 terms, and the low-energy collision strengths are dominated by autoionizing resonances. The collision stre ngth is averaged over a Maxwellian velocity distribution to obtain eff ective collision strengths as a function of electron temperature. To o ur knowledge, these are the first published data for these processes.