Modeling X-ray photoionized plasmas produced at the Sandia Z-facility

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

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In experiments at the high-power Z-facility at Sandia National Laboratory in Albuquerque, New Mexico, we have been able to produce a low density photoionized laboratory plasma of Fe mixed with NaF. The conditions in the experiment allow a meaningful comparison with X-ray emission from astrophysical sources. The charge state distributions of Fe, Na and F are determined in this plasma using high resolution X-ray spectroscopy. Independent measurements of the density and radiation flux indicate unprecedented values for the ionization parameter xi = 20-25 erg cm s(-1) under nearly steady-state conditions. First comparisons of the measured charge state distributions with X-ray photoionization models show reasonable agreement, although many questions remain.
Original languageEnglish
Pages (from-to)147-153
Number of pages7
JournalAstrophysics and Space Science
Issue number1-2
Publication statusPublished - Jun 2005
Event5th International Conference on High Energy Density Laboratory Astrophysics (HEDLA) - Tucson, Arizona, United States
Duration: 01 Mar 200501 Mar 2005

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics


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