Modeling X-Ray Photoionized Plasmas Produced at the Sandia Z-Facility

被引：0
作者：
P. A. M. Van Hoof
M. E. Foord
R. F. Heeter
J. E. Bailey
H.-K. Chung
M. E. Cuneo
W. H. Goldstein
V. Jonauskas
F. P. Keenan
R. Kisielius
D. A. Liedahl
C. Ramsbottom
S. J. Rose
P. T. Springer
R. S. Thoe
机构：
[1] Queen’s University,APS Division, Physics Department
[2] University of California,Department of Physics
[3] Lawrence Livermore National Laboratory,undefined
[4] Sandia National Laboratory,undefined
[5] Clarendon Laboratory,undefined
来源：
Astrophysics and Space Science | 2005年 / 298卷
关键词：
photoionization; X-ray; spectroscopy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
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 ξ = 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.
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页码：147 / 153
页数：6
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