Enhancement of Optically Thick to Thin Line Intensities in Solar and Stellar Coronal Plasmas through Radiative Transfer Effects: An Angularly Resolved Study
The Astrophysical Journal American Astronomical Society 613:2 (2004) l181-l184
Calculation of photoionized plasmas with an average-atom model
Journal of Physics B Atomic Molecular and Optical Physics IOP Publishing 37:17 (2004) l337
Dirac-Fock energy levels and transition probabilities for oxygen-like Fe XIX ***
Astronomy & Astrophysics EDP Sciences 424:1 (2004) 363-369
Charge-state distribution and Doppler effect in an expanding photoionized plasma.
Physical review letters 93:5 (2004) 055002
Abstract:
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.Relativistic allowed and forbidden transition probabilities for fluorine-like Fe XVIII*
Astronomy & Astrophysics EDP Sciences 416:1 (2004) 383-389