The effective collision strengths for the fine-structure transitions between the ground and first excited states of neutral iron have been calculated for the first time. Due to the truncation of the close-coupling basis and incomplete dipole polarizability of the target, errors are estimated to be in the region of 10 to 20%
Acknowledgements
This work was done with the support of a PPARC grant GR/H93576, and an EC network contract ERB CHRX CT920013. The authors would like to thank Dr. Bautista for providing data files for the polarization calculation.