ABSTRACT
IAEA-F4-TM-42581
IAEA Technical Meeting on Atomic, Molecular and Plasma Material Interaction Data for
Fusion Science and Technology
Theoretical electron-impact ionization cross sections of Fe11+ and W+
D.-H. Kwon
Korea Atomic Energy Research Institute, Daejeon, Republic of Korea
E-mail address of main author: hkwon@kaeri.re.kr
We have calculated elecron-impact ionization (EII) cross sections for Fe11+ [1] and W+ [2]
ions by using flexible atomic code (FAC) [3] based on a distorted-wave approximation
(DWA). The calculated total EII cross section including direct ionzation (DI) and excitationautoionization (EA) for Fe11+ agrees well with recent experiment except for 2l → nl' EA. For
this excitaion the calculated cross section is larger than experiment. The calculated total EII
cross section for W+ is about 25% larger than experiments. R-matrix calculations have been
carried out for collisional excitation cross sections of Fe11+ and W+ ions by debugging and
parellelizing R-matrix routines implemented in original FAC which have fatal segmentation
fault errors for those complex system calculations and are programed for single processor.
The collisional excitaion cross sections calculated by the R-matrix method will be presented
and compared with our previous results by DWA in detail.
References
[1] D.-H. Kwon and D. W. Savin, Phys. Rev. A 86, 022701 (2012)
[2] D.-H. Kwon, Y.-S. Cho, and Y.-O. Lee, Int. J. Mass Spect. 356, 7 (2013)
[3] M. F. Gu, Can. J. Phys. 86, 675 (2008)
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