摘要: Abstract We present Dedale, a fast code implementing simplified non-local-thermodynamic-equilibrium (NLTE) plasma model. In this approach, the stationary collisional–radiative rates equations are solved for set of well-chosen Layzer complexes in order to determine ion state populations. The electronic structure is approximated using screened hydrogenic model (SHM) More with relativistic corrections. radiative and collisional cross-sections based on Kramers Van Regemorter formula, respectively, which extrapolated derive analytical expressions all rates. latter improved thereafter Gaunt factors or more accurate tabulated data. Special care taken dielectronic compared rescaled quantum calculations from Averroes code. emissivity opacity spectra calculated under same assumptions as rates, either detailed manner by summing transitions between each pair complexes, coarser statistical way one-electron averaged over complexes. Optionally, nl-splitting can be accounted WKB approach an approximate potential reconstructed analytically charges. It also possible improve replacing some transition arrays data SCO-RCG FAC codes. This option particularly useful K-shell emission spectroscopy. Dedale was used submit neon tungsten cases last NLTE-8 workshop (Santa Fe, November 4–8, 2013). Some these results presented, well comparisons calculations.
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