1. Atomic data for the modeling of K lines in elements with 10≤ Z≤ 20 C Mendoza (IVIC, Venezuela) MA Bautista (IVIC, Venezuela) P Palmeri (Mons-Hainaut, Belgium) P Quinet (Mons-Hainaut, Belgium) TR Kallman (NASA-GSFC, USA) J Garcia (NASA-GSFC, USA) TW Gorczyca (WMU, USA) High Accuracy Atomic Physics in Astronomy ITAMP 07/08/2006

2. O K photoabsorption (Garcia et al 2005)

3. Fe K photoabsorption Palmeri et al (2002)

4. Following our work on the atomic data for the X-ray spectral modeling of Fe and O, we intend to compute… For elements with 10 ≤ Z ≤ 20 Energy levels, and radiative and Auger widths for K- vacancy states Photoabsorption cross sections of the K shell RR cascade and line emission for isoelectronic sequences with N > 2 Auger cascades for ions with Z=26 and N > 9 Outer and inner-shell photoionization cross sections and K line spectrum of Z=28

5. There is a severe lack of measurements for the energies of K vacancy states with 10≤ Z≤ 20