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

Autor:	P. A. M. van Hoof, W. H. Goldstein, Catherine Ramsbottom, M. E. Foord, S. J. Rose, R. F. Heeter, V. Jonauskas, R. S. Thoe, M. E. Cuneo, P. T. Springer, H.-K. Chung, D. A. Liedahl, James E. Bailey, Francis P. Keenan, R. Kisielius
Rok vydání:	2005
Předmět:	Physics Radiation flux Space and Planetary Science Astrophysics::High Energy Astrophysical Phenomena Ionization X-ray Astronomy and Astrophysics Charge (physics) Photoionization Plasma Atomic physics Spectroscopy Cosmology
Zdroj:	Astrophysics and Space Science. 298:147-153
ISSN:	1572-946X 0004-640X
DOI:	10.1007/s10509-005-3925-1
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d3de9a32e972ac05838385550b1429ab https://doi.org/10.1007/s10509-005-3925-1 Zobrazit plný text záznamu Plný text ve formátu PDF