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Title: Atomic Data for Opacity Calculations

Abstract

Theoretical methods, emphasizing on various physical effects with a variety of accuracy, have been employed to obtain the atomic data for opacity calculations. For energy levels and oscillator strength, one- and multi- configurational self-consistent schemes in both full relativistic and non-relativistic forms have been used to show how the detailed treatment of the electronic correlations and the relativistic effects, affects the finally calculated opacity. Quantum mechanical and semi-classical approaches have been used to deal with the electron impact broadening of the spectral lines. One channel and multi-channel close-coupling approaches have been applied in the calculations of the photoionization cross sections. With the channel coupling, we have shown the importance of the autoionization effects for the transmission spectra. As examples, x-ray transmission spectra and the spectra-resolved opacities of Al, Fe, and Au are presented based on the so-called detailed-term (or level)-accounting treatments for the atomic data.

Authors:
 [1]
  1. Department of Physics, National University of Defense Technology, Changsha 410073 (China)
Publication Date:
OSTI Identifier:
21056926
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 901; Journal Issue: 1; Conference: ICAMDATA: 5. international conference on atomic and molecular data and their applications, Meudon (France), 15-19 Oct 2006; Other Information: DOI: 10.1063/1.2727372; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ABSORPTION SPECTRA; AUTOIONIZATION; CORRELATIONS; COUPLING; CROSS SECTIONS; DATA COMPILATION; ELECTRONS; ENERGY LEVELS; LINE BROADENING; OPACITY; OSCILLATOR STRENGTHS; PHOTOIONIZATION; QUANTUM MECHANICS; RELATIVISTIC RANGE; X RADIATION; X-RAY SPECTRA

Citation Formats

Yuan Jianmin. Atomic Data for Opacity Calculations. United States: N. p., 2007. Web. doi:10.1063/1.2727372.
Yuan Jianmin. Atomic Data for Opacity Calculations. United States. doi:10.1063/1.2727372.
Yuan Jianmin. Fri . "Atomic Data for Opacity Calculations". United States. doi:10.1063/1.2727372.
@article{osti_21056926,
title = {Atomic Data for Opacity Calculations},
author = {Yuan Jianmin},
abstractNote = {Theoretical methods, emphasizing on various physical effects with a variety of accuracy, have been employed to obtain the atomic data for opacity calculations. For energy levels and oscillator strength, one- and multi- configurational self-consistent schemes in both full relativistic and non-relativistic forms have been used to show how the detailed treatment of the electronic correlations and the relativistic effects, affects the finally calculated opacity. Quantum mechanical and semi-classical approaches have been used to deal with the electron impact broadening of the spectral lines. One channel and multi-channel close-coupling approaches have been applied in the calculations of the photoionization cross sections. With the channel coupling, we have shown the importance of the autoionization effects for the transmission spectra. As examples, x-ray transmission spectra and the spectra-resolved opacities of Al, Fe, and Au are presented based on the so-called detailed-term (or level)-accounting treatments for the atomic data.},
doi = {10.1063/1.2727372},
journal = {AIP Conference Proceedings},
number = 1,
volume = 901,
place = {United States},
year = {Fri Apr 06 00:00:00 EDT 2007},
month = {Fri Apr 06 00:00:00 EDT 2007}
}