Effective collision strengths for transitions in Fe X

Francis Keenan, Kanti Aggarwal

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Collision strengths for 4005 transitions among the lowest 90 levels of the (1s(2)2s(2)2p(6)) 3s(2)3p(5), 3s3p(6), 3s(2)3p(4)3d, 3s3p(5)3d and 3s(2)3p(3)3d(2) configurations of Fe X have been calculated using the Dirac Atomic R-matrix Code (DARC) of Norrington & Grant, over a wide energy range up to 210 Ryd. Resonances have been resolved in the threshold region, and effective collision strengths have been obtained over a wide temperature range up to 107 K. The present calculations should represent a significant improvement ( in both range and accuracy) over the earlier available results of Bhatia & Doschek and Pelan & Berrington. Based on several comparisons, the accuracy of our data is assessed to be better than 20%, for a majority of transitions.
Original languageEnglish
Pages (from-to)1215-U57
Number of pages1159
JournalAstronomy and Astrophysics
Volume439
Issue number3
Publication statusPublished - Sep 2005

ASJC Scopus subject areas

  • Space and Planetary Science

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