Effective collision strengths for electron-impact excitation of S X

Kenneth Bell, Catherine Ramsbottom

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Effective collision strengths computed by the R-matrix method are presented for the electron-impact excitation of nitrogen-like S X. The total wave function used in the expansion includes the lowest 11 eigenstates of S X which arise from the 2s(2)2p(3), 2s2p(4), 2p(5) and 2s(2)2p(2)3s configurations. These 11 LS target states correspond to 22 fine-structure levels, giving 231 possible transitions. All the effective collision strengths for these transitions are tabulated in the range log T(K) = 4.6 to log T(K) = 6.7. The energy level values and oscillator strengths for allowed transitions are also tabulated. The effective collision strengths were calculated by averaging the electron collision strengths over a Maxwellian distribution of velocities. The present effective collision strengths are the only results currently available for these fine-structure transition rates. (C) 2000 Academic Press.
Original languageEnglish
Pages (from-to)176-190
Number of pages15
JournalAtomic Data and Nuclear Data Tables
Volume76
Issue number1
Publication statusPublished - Sep 2000

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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