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Charge-state distribution and Doppler effect in an expanding photoionized plasma.

  • M.E. Foord
  • , R.F. Heeter
  • , P.A.M. Van Hoof
  • , R.S. Thoe
  • , J.E. Bailey
  • , M.E. Cuneo
  • , H.-K. Chung
  • , D.A. Liedahl
  • , K.B. Fournier
  • , G.A. Chandler
  • , Valdas Jonauskas
  • , Romas Kisielius
  • , L.P. Mix
  • , Catherine Ramsbottom
  • , P.T. Springer
  • , Francis Keenan
  • , S.J. Rose
  • , W.H. Goldstein

Research output: Contribution to journalArticlepeer-review

Abstract

The charge state distributions of Fe, Na, and F are determined in a photoionized laboratory plasma using high resolution x-ray spectroscopy. Independent measurements of the density and radiation flux indicate unprecedented values for the ionization parameter ���¾=20 25 erg cm s-1 under near steady-state conditions. Line opacities are well fitted by a curve-of-growth analysis which includes the effects of velocity gradients in a one-dimensional expanding plasma. First comparisons of the measured charge state distributions with x-ray photoionization models show reasonable agreement.
Original languageEnglish
Article number055002
Pages (from-to)055002-1-055002-4
Number of pages4
JournalPhysical Review Letters
Volume93(5)
Issue number5
DOIs
Publication statusPublished - 30 Jul 2004

ASJC Scopus subject areas

  • General Physics and Astronomy

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