Calculation of photoionized plasmas with an average-atom model

Rose, S. J.; Hoof, P. A. M. van; Jonauskas, V.; Keenan, F. P.; Kisielius, R.; Ramsbottom, Catherine; Foord, M. E.; Heeter, R. F.; Springer, P. T.

doi:10.1088/0953-4075/37/17/l05

Cited by 31 publications

(34 citation statements)

References 8 publications

(3 reference statements)

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“…5͑c͒. 65 A radiation temperature of T r = 165 eV, electron temperature of T e = 150 eV, and electron number density of n e =2ϫ 10 19 cm −3 were assumed for the calculations with the FIG. 5.…”

Section: Photoionized Plasmasmentioning

confidence: 99%

The National Ignition Facility: Ushering in a new age for high energy density science

Moses¹,

Boyd²,

Remington³

et al. 2009

Physics of Plasmas

412

221

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The National Ignition Facility (NIF) [E. I. Moses, J. Phys.: Conf. Ser. 112, 012003 (2008); https://lasers.llnl.gov/], completed in March 2009, is the highest energy laser ever constructed. The high temperatures and densities achievable at NIF will enable a number of experiments in inertial confinement fusion and stockpile stewardship, as well as access to new regimes in a variety of experiments relevant to x-ray astronomy, laser-plasma interactions, hydrodynamic instabilities, nuclear astrophysics, and planetary science. The experiments will impact research on black holes and other accreting objects, the understanding of stellar evolution and explosions, nuclear reactions in dense plasmas relevant to stellar nucleosynthesis, properties of warm dense matter in planetary interiors, molecular cloud dynamics and star formation, and fusion energy generation.

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Section: Photoionized Plasmasmentioning

confidence: 99%

The National Ignition Facility: Ushering in a new age for high energy density science

Moses¹,

Boyd²,

Remington³

et al. 2009

Physics of Plasmas

412

221

View full text Add to dashboard Cite

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“…The charge state distributions for Fe, Na, and F were calculated using four photoionization codes, Cloudy [6], Galaxy [33], Flychk [34], and Nimp [35]. To simplify the discussion, these codes were run in a steady-state mode at a single temperature and density, i.e., having no spatial variation (0-D).…”

Section: Photoionization Modelsmentioning

confidence: 99%

“…Autoionization and dielectronic recombination rates are calculated for individual principal quantum levels as approximated by Albritton and Wilson [39]. More details about this code can be found in Ref [33,35]. Calculations and comparisons with data for Fe are shown in Fig.…”

Section: Nimpmentioning

confidence: 99%

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

Foord

Heeter

Chung

et al. 2006

Journal of Quantitative Spectroscopy and Radiative Transfer

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

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“…; Watanabe et al 2006;Schulz et al 2002Schulz et al , 2000van Kerkwijk et al 1995;Sako et al 1999). Sophisticated computer codes were developed (Halpern & Grindlay 1980;Kallman & McCray 1982;Rose et al 2004;Wang et al 2009;Remington et al 2006) with highly detailed atomic structure to analyze these X-ray spectra in the attempt to infer the underlying celestial phenomena. All these codes were, however, aimed to study the properties of the astrophysical objects, rather than the properties of this special class of plasmas.…”

Section: Introductionmentioning

confidence: 99%

Photoionizational Plasmas. I. Theory

Salzmann

Takabe

Wang

et al. 2011

ApJ

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In this paper, an attempt is made to define the subject of photoionizational plasmas through rigorous mathematical formalism. The central results of this paper are the following. (1) A set of recursive equations is introduced for the computation of the charge state distributions in photoionizational plasmas. (2) Quantitative validity limits are given for both the collisional and the photoionizational domains. (3) A parameter that determines the charge state distribution in the photoionizational regime is introduced. (4) We provide detailed discussion about the most important components of the emission spectrum in the different equilibrium domains of the emitting plasma. Some of these components have not been reported so far as included in the analysis of such plasmas.

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Calculation of photoionized plasmas with an average-atom model

Cited by 31 publications

References 8 publications

The National Ignition Facility: Ushering in a new age for high energy density science

The National Ignition Facility: Ushering in a new age for high energy density science

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

Photoionizational Plasmas. I. Theory

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