Hybrid atomic models for spectroscopic plasma diagnostics

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We propose a hybrid approach to treating atomic structure and rates in collisional-radiative models, combining the completeness of highly averaged models with the accuracy of detailed models. The hybrid scheme supplements a small subset of coronally accessible fine structure levels with a complete set of configuration- and superconfiguration-averaged levels and produces spectra based on transitions among a mix of fine-structure and relativistic configuration-averaged levels. Convenient expressions are given for obtaining rates between the fine structure and averaged levels and a technique for propagating configuration interaction from the fine structure calculations to configuration averages is described. We present results from a ... continued below

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Hansen, S B; Bauche, J; Bauche-Arnoult, C & Gu, M F November 17, 2006.

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We propose a hybrid approach to treating atomic structure and rates in collisional-radiative models, combining the completeness of highly averaged models with the accuracy of detailed models. The hybrid scheme supplements a small subset of coronally accessible fine structure levels with a complete set of configuration- and superconfiguration-averaged levels and produces spectra based on transitions among a mix of fine-structure and relativistic configuration-averaged levels. Convenient expressions are given for obtaining rates between the fine structure and averaged levels and a technique for propagating configuration interaction from the fine structure calculations to configuration averages is described. We present results from a trial hybrid model of germanium which demonstrate the accuracy of the hybrid model for charge state distributions and spectra.

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PDF-file: 17 pages; size: 0.2 Mbytes

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  • Journal Name: High Energy Density Physics, vol. 3, n/a, February 20, 2007, pp. 109-114; Journal Volume: 3

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  • Report No.: UCRL-JRNL-226429
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 913547
  • Archival Resource Key: ark:/67531/metadc884256

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  • November 17, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 29, 2016, 1:42 p.m.

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Hansen, S B; Bauche, J; Bauche-Arnoult, C & Gu, M F. Hybrid atomic models for spectroscopic plasma diagnostics, article, November 17, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc884256/: accessed September 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.