Inner-shell photoionization of the 3dxground state Fe ions
- 25 June 2001
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 34 (13) , 2697-2705
- https://doi.org/10.1088/0953-4075/34/13/311
Abstract
The total photoionization cross section for the 3dx ground state Fe ions, Fe III through Fe VIII, is calculated from the ionization threshold to the K edge including resonance features. The R-matrix method is used, the work being undertaken as part of the international RmaX (`R-matrix for x-ray processes') network. The dynamics of the photoionization process is illustrated by examining isonuclear trends and by quantifying some of the main resonance features due to inner-shell processes, particularly the large resonances arising from photoexcitation of the core (np53dx + 1), and the K edge. We also show that to calculate the cross section correctly through a deep inner-shell edge, requires the inclusion of states with inner-shell vacancies in all the preceding subshells.Keywords
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