1. Theoretical interpretation for 2p−ndabsorption spectra of iron, nickel, and copper in X-ray range measured at the LULI2000 facility
- Author
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F. Gilleron, S. Bastiani-Ceccotti, Philippe Arnault, Q. Porcherot, Charles Reverdin, G. Loisel, Sylvaine Turck-Chièze, F. de Gaufridy de Dortan, F. Thais, Jean-Christophe Pain, Thomas Blenski, M. Poirier, and V. Silvert
- Subjects
Opacity ,Absorption spectroscopy ,Chemistry ,Physics ,QC1-999 ,X-ray ,chemistry.chemical_element ,01 natural sciences ,Copper ,010305 fluids & plasmas ,Nickel ,Atomic theory ,0103 physical sciences ,Atomic physics ,010306 general physics ,Absorption (electromagnetic radiation) ,Excitation - Abstract
The 2p − nd absorption structures in medium Z elements present a valuable benchmark for atomic models since they exhibit a complex dependence on temperature and density. For these transitions lying in the X-ray range, one observes a competition between the spin-orbit splitting and the broadening associated to the excitation of complex structures. Detailed opacity codes based on the HULLAC or FAC suites agree with the statistical code SCO; but in iron computations predict higher peak absorption than measured. An addition procedure on opacities calculated with detailed codes is proposed and successfully tested.
- Published
- 2013
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