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A benchmark of the He-like triplet for ions with 6 (2016)

Rodriguez, Y., Gatuzz, E., Bautista, M. A., Mendoza, C.

Oxford University Press

In: Monthly Notices of the Royal Astronomical Society

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Publication Date: 2016-07-06

Description: After an extensive assessment of the effective collision strengths available to model the He-like triplet of C v , N vi , O vii , Ne ix , Mg xi and Si xiii in collisionally dominated plasmas, new accurate effective collision strengths are reported for Ne ix . The uncertainty intervals of the density and temperature diagnostics due to the atomic data errors are also determined for both Maxwell–Boltzmann and electron-energy distributions. It is shown that these uncertainty bands limit the temperature range where the temperature line-ratio diagnostic can be applied and its effectiveness to discern the electron-energy distribution type. These findings are benchmarked with Chandra and XMM–Newton spectra of stellar coronae and with tokamak measurements.

Print ISSN: 0035-8711

Electronic ISSN: 1365-2966

Topics: Physics

Published by Oxford University Press

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