Cross Sections for Electron Impact Excitation of O VI Lines

Haykel Elabidi (1), Sylvie Sahal-Bréchot (2), Nébil Ben Nessib (3) ((1) Groupe de Recherche en Physique Atomique et Astrophysique, Faculté des Sciences de Bizerte, Université de Carthage, Tunisia; (2) Observatoire de Paris, Meudon, France; (3) Groupe de Recherche en Physique Atomique et Astrophysique, INSAT, Université de Carthage, Tunisia.)

Radiative atomic data and electron impact excitation cross sections for the 2s-2p transitions in O VI for transitions among the fine structure levels belonging to the 1s^2 nl (2≤ n≤ 5) configurations have been calculated. We have extended the calculations of fine structure collision strengths up to 140 Ryd and have compared our results at energies below 63 Ryd to the R-matrix ones.

Complete preprint ==> http://arxiv.org/abs/1112.1447

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