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

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 xi=20-25 erg cm s(-1) under near steady-s...

Full description

Saved in:
Bibliographic Details
Published inPhysical review letters Vol. 93; no. 5; p. 055002
Main Authors Foord, M E, Heeter, R F, van Hoof, P A M, Thoe, R S, Bailey, J E, Cuneo, M E, Chung, H-K, Liedahl, D A, Fournier, K B, Chandler, G A, Jonauskas, V, Kisielius, R, Mix, L P, Ramsbottom, C, Springer, P T, Keenan, F P, Rose, S J, Goldstein, W H
Format Journal Article
LanguageEnglish
Published United States 30.07.2004
Online AccessGet more information

Cover

More Information
Summary: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 xi=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.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.93.055002