Simulations of Fe at 156 eV with configuration interaction and mixed UTA

Simulations of the transmission spectra measured by Bailey et al. (Phys. Rev. Lett. 99 (2007) 265002–265004), obtained with the newest version of the HULLAC, are presented. With this new version one can easily define which group of configurations will be computed to synthesize the spectrum. Moreover, one can now compute mixed UTA (MUTA). These modifications provide an extension of the older HULLAC codes. The aim of this work is to compare spectra with different ranges of configuration interactions and with different thresholds for treating separated lines in the MUTA model.