Effective collision strengths for transitions among the 3s(2), 3s3p and 3p(2) configurations of Fe xv

Francis Keenan, Kanti Aggarwal, A.Z. Msezane

Research output: Contribution to journalArticlepeer-review

Abstract

Effective collision strengths for transitions among the ten energetically lowest fine-structure levels belonging to the (1s(2)2s(2)2p(6))3s(2), 3s3p and 3p(2) configurations of Fe xv have been calculated in the electron temperature range of 10(5)-10(7) K, using the recent Dirac atomic R-matrix code of Norrington and Grant. The results are compared with the other recently available independent Breit-Pauli R-matrix calculations of Eissner et al (Eissner W, Galavis M E, Mendoza C and Zeippen C J 1999 Astron. Astrophys. Suppl. 137 165) and Griffin et al (Griffin DC, Badnell N R, Pindzola M S and Shaw J A 1999 J. Phys. B: At. Mol. Opt. Phys. 32 2139, 4129). Large differences are observed for many transitions over almost the entire temperature range. These differences are analysed and discussed, and the accuracy of the calculations is assessed.
Original languageEnglish
Pages (from-to)L757-L766
Number of pages10
JournalJournal of Physics B: Atomic Molecular and Optical Physics
Volume34
Publication statusPublished - 2001

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