Fe IX Calculations for the Solar Dynamics Observatory
arXiv:1107.0470 · doi:10.1088/2041-8205/740/2/L52
Abstract
New calculations of the energy levels, radiative transition rates and collisional excitation rates of \ion{Fe}{ix} have been carried out using the Flexible Atomic Code, paying close attention to experimentally identified levels and extending existing calculations to higher energy levels. For lower levels, R-matrix collisional excitation rates from earlier work have been used. Significant emission is predicted by these calculations in the 5f-3d transitions, which will impact analysis of SDO AIA observations using the 94Ã filter.
Accepted by ApJL