Abstract
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 language | English |
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Pages (from-to) | 147-153 |
Number of pages | 7 |
Journal | Astrophysics and Space Science |
Volume | 298 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - Jun 2005 |
Event | 5th International Conference on High Energy Density Laboratory Astrophysics (HEDLA) - Tucson, Arizona, United States Duration: 01 Mar 2005 → 01 Mar 2005 |
ASJC Scopus subject areas
- Space and Planetary Science
- Astronomy and Astrophysics