Electron impact broadening of multicharged ion lines of astrophysical interest: Ne VII,Ne VIII and Si XI |
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| Affiliation: | 1. Groupe de Recherche en Physique Atomique et Astrophysique, Faculté des Sciences de Bizerte, 7021 Zarzouna, Tunisia;2. Groupe de Recherche en Physique Atomique et Astrophysique, Institut National des Sciences Appliquées et de Technologie, Centre Urbain Nord B.P. No. 676, 1080 Tunis Cedex, Tunisia;3. Astronomical Observatory, Volgina 7, 11160 Belgrade, Serbia and Montenegro;1. Department of Physics, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;2. Department of Physics, Faculty of Sciences of Bizerte (FSB), University of Carthage, Tunis, Tunisia;3. Department of Physics and Astronomy, College of Sciences, King Saud University, Saudi Arabia;4. Astronomical Observatory, Volgina 7, 11060 Belgrade 38, Serbia;5. Sorbonne Université, Observatoire de Paris, Université PSL, CNRS, LERMA, F-92190 Meudon, France;1. Groupe de Recherche en Physique Atomique et Astrophysique, Faculté des Sciences de Bizerte, Université de Carthage, Tunisia;2. Deanship of the Foundation Year, Department of Physics, Umm Al-Qura University, PO Box 715, Makkah, Saudi Arabia;3. Department of Physics and Astronomy, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia;4. Laboratoire d’Étude du Rayonnement et de la Matière en Astrophysique, Observatoire de Paris, UMR CNRS 8112, UPMC, 5 Place Jules Janssen, 92195 Meudon Cedex, France;5. Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia |
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| Abstract: | The modified semi-empirical method, often used in the investigations of stellar plasma for the determination of needed Stark line widths, is adapted here to use more accurate collision strengths instead of Gaunt factor. It is demonstrated that in such a way its applicability is extended to highly charged ions and good agreement is obtained with the more sophisticated semi-classical perturbation approach up to Si XI. Using this method, Stark line widths of several complex ions: two Be-like ions (Ne VII and Si XI) and one Li-like neon (Ne VIII) were calculated. The obtained results were compared with experiments and other theoretical approaches. |
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