Dear colleagues,
Long ago someone asked me how long it would take to resolve the atomic data issues for the 1 Angstrom bin around 94 Angstroms. Well my answer is now over two years ! I made progress in these two years but all the issues are still not fully resolved. It took a long time to do (within the APAP-network) the largest calculations ever done for the Fe X, XI, XII, XIII, and spent a lot of time going through some of Brian Fawcett's original plates to identify the strongest (unidentified) soft X-ray lines. I wrote a summary paper:
http://adsabs.harvard.edu/abs/2012arXiv1208.2142D
where you can find important implications for the SDO AIA 94 Angstroms band.
The calculations, however, resulted in important changes also for the EUV lines observed by e.g. Hinode EIS. In summary, all previous density measurements from Fe XII need to be revised. And discrepancies found in the Fe X and Fe XI temperature-sensitive lines are resolved.
Here are the links to the recently-published papers:
http://adsabs.harvard.edu/abs/2012A%26A...541A..90D http://adsabs.harvard.edu/abs/2012A%26A...543A.139D http://adsabs.harvard.edu/abs/2012A%26A...543A.144D
Giulio