Dielectronic satellite spectra for highly charged helium-like ions - III. Calculations of n = 3 solar flare iron lines

Bely‐Dubau, F.; Gabriel, A. H.; Volonté, S.

doi:10.1093/mnras/186.3.405

Cited by 106 publications

(29 citation statements)

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“…Gabriel [5] extensively developed the theory of the n = 2 He-like satellites intensities, whose alphabetic labeling of the twenty two n = 2 satellite lines and the four He-like CE lines have been widely adopted today. Further improvements to the theory were made in subsequent work, including better inner-shell and He-like CE rates and highern satellite contributions [6][7][8][9]. The satellite lines of H-like iron were investigated by Dubau et al [10].…”

Section: Introductionmentioning

confidence: 99%

Laboratory measurements of the dielectronic recombination satellite transitions of He-like Fe XXV and H-like Fe XXVI

Beiersdörfer

Brown

et al. 2012

Can. J. Phys.

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We present laboratory spectra of dielectronic recombination (DR) satellite tnmsitions attached to the He-like and H-like iron resonance lines obtained widt me NASA Goddard Space Flight Center X-ray calorimeter and produced by a thermal plasma simu1ation technique on the EBIT-I electron beam ion trap at the Lawrence Livennore National Laboratory. We demonstrate that the ca10rimeter has sufficient spectral resoiution in the 6-9 keY range to provide reliable measurements not only of standard DR satellite to resonance line intensities but also of DR satellite to DR satellite ratios that can be used to diagnose nonthermal electron distributions. Electron temperatures derived from the measured line intensities are consistent with the temperature of the simulated plasma. Temperature measurements based on DR satellite transitions have significant advantages over those based on collisional ionization equilibrium or continuum shape. Thus, successful demonstration of this method with the X-ray calorimeter is an important step fur its application in X-ray astronomy.

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Section: Introductionmentioning

confidence: 99%

Laboratory measurements of the dielectronic recombination satellite transitions of He-like Fe XXV and H-like Fe XXVI

Beiersdörfer

Brown

et al. 2012

Can. J. Phys.

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“…Partial dielectronic recombination rate coefficients also abound in the literature in connection with the study of particular physical problems: for example, at low temperatures, where only a few autoionizing states contribute significantly (Nussbaumer & Storey 1983); satellite lines (e.g. Bely-Dubau et al 1979); laser produced plasmas, where the electron density and/or charge state is high enough that the non-LTE populations are concentrated in a limited number of low-lying states (see e.g. Abdallah & Clark 1994).…”

Section: Introductionmentioning

confidence: 99%

Dielectronic recombination data for dynamic finite-density plasmas

Badnell

O’Mullane

Summers

et al. 2003

A&A

233

282

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Abstract.A programme is outlined for the assembly of a comprehensive dielectronic recombination database within the generalized collisional-radiative (GCR) framework. It is valid for modelling ions of elements in dynamic finite-density plasmas such as occur in transient astrophysical plasmas such as solar flares and in the divertors and high transport regions of magnetic fusion devices. The resolution and precision of the data are tuned to spectral analysis and so are sufficient for prediction of the dielectronic recombination contributions to individual spectral line emissivities. The fundamental data are structured according to the format prescriptions of the Atomic Data and Analysis Structure (ADAS) and the production of relevant GCR derived data for application is described and implemented following ADAS. The requirements on the dielectronic recombination database are reviewed and the new data are placed in context and evaluated with respect to older and more approximate treatments. Illustrative results validate the new high-resolution zero-density dielectronic recombination data in comparison with measurements made in heavy-ion storage rings utilizing an electron cooler. We also exemplify the role of the dielectronic data on GCR coefficient behaviour for some representative light and medium weight elements.

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“…Bely-Dubau et al 1979); laser produced plasmas, where the electron density and/or charge state is high enough that the non-LTE populations are concentrated in a limited number of low-lying states (e.g. Abdallah & Clark 1994).…”

Section: Introductionmentioning

confidence: 99%

Dielectronic recombination data for dynamic finite-density plasmas

Bautista¹,

Badnell

2007

A&A

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We report on total and final-state resolved partial dielectronic recombination data for helium-like ions forming lithium-like ions. The calculations consider ions of Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Kr, Mo, and Xe. The results are discussed and compared with available experimental data and with previous calculations. Our archived datasets include both total and level-specific DR rate coefficients. The total ion rate coefficients are provided both in tabulated form and as analytical fits for easy implementation into spectral modelling codes. We employ the level specific rate coefficients in constructing detailed spectral models of Li-like ions including the combined effects of collisional excitation and recombination. The results from these models are compared with the those pure collisional excitation models under typical conditions of low density plasmas. This work is part of an assembly of a dielectronic recombination database for modelling of finite-density plasmas.

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Dielectronic satellite spectra for highly charged helium-like ions - III. Calculations of n = 3 solar flare iron lines

Cited by 106 publications

References 0 publications

Laboratory measurements of the dielectronic recombination satellite transitions of He-like Fe XXV and H-like Fe XXVI

Laboratory measurements of the dielectronic recombination satellite transitions of He-like Fe XXV and H-like Fe XXVI

Dielectronic recombination data for dynamic finite-density plasmas

Dielectronic recombination data for dynamic finite-density plasmas

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