Study of X-ray photoionized Fe plasma and comparisons with astrophysical modeling codes

Journal Article · Fri Apr 29 00:00:00 EDT 2005 · Elsevier Science

OSTI ID:884798

Foord, M E; Heeter, R F; Chung, H; vanHoof, P M; Bailey, J E; Cuneo, M E; Liedahl, D A; Fournier, K B; Jonauskas, V; Kisielius, R; Ramsbottom, C; Springer, P T; Keenan, K P; Rose, S J; Goldstein, W H

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 the ionization parameter {zeta} in the plasma reaches values {zeta} = 20-25 erg cm s{sup -1} under near steady-state conditions. A curve-of-growth analysis, which includes the effects of velocity gradients in a one-dimensional expanding plasma, fits the observed line opacities. Absorption lines are tabulated in the wavelength region 8-17 {angstrom}. Initial comparisons with a number of astrophysical x-ray photoionization models show reasonable agreement.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 884798
• Report Number(s): UCRL-JRNL-212116; TRN: US0603690
• Journal Information: Elsevier Science, Vol. 99, Issue 1-3
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
CHARGE STATES
IONIZATION
PHOTOIONIZATION
PLASMA
RADIATION FLUX
RESOLUTION
SIMULATION
STEADY-STATE CONDITIONS
VELOCITY
WAVELENGTHS
X-RAY SPECTROSCOPY