Journal ArticleDOI
RMATRX1: Belfast atomic R-matrix codes
TLDR
RMATRX1 as mentioned in this paper is a general program to calculate atomic continuum processes using the R -matrix method, including electronatom and electron-ion scattering, and radiative processes such as bound-bound transitions, photoionization and polarizabilities.About:
This article is published in Computer Physics Communications.The article was published on 1995-12-01. It has received 679 citations till now. The article focuses on the topics: Matrix method & Radiative transfer.read more
Citations
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Journal ArticleDOI
Energy variation of double K -shell photoionization of Ne
Stephen H. Southworth,S. Li,Dimitris Koulentianos,Gilles Doumy,Linda Young,Donald A. Walko,Ralph Püttner,Denis Céolin,Renaud Guillemin,I. Ismail,Oksana Travnikova,Maria Novella Piancastelli,Marc Simon,Steven T. Manson,T. W. Gorczyca +14 more
TL;DR: In this paper , an experimental and theoretical study of double $K$-shell photoionization of Ne over the 2.3-8.5 keV x-ray energy range was performed by measuring the relative rates of the hypersatellite-diagram Auger-electron ratios.
Journal Article
High-Precision Calculations for Electron-Impact Excitation and Ionization of Complex Atoms
TL;DR: In this article, the state-of-the-art in this field is illustrated by a few key examples of the current state of the art in the field of electron impact excitation and ionization processes.
Journal ArticleDOI
Modelling the spectrum of Mg in cool stars
Paul S. Barklem,Yeisson Osorio +1 more
TL;DR: In this article, the authors presented example first results for calculations of NLTE Mg line based on a new model atom with significant improvements in the collision data for neutral Mg. The results are compared with observed spectra and the impact of the new calculations briefly explored.
Journal ArticleDOI
R-matrix electron-impact excitation data for the O-like iso-electronic sequence
TL;DR: In this paper, a large-scale R-matrix intermediate coupling frame transformation calculations were performed systematically for the O-like iso-electronic sequence, where the fine-structure levels were included in both the configuration interaction target and close coupling collision expansions.
References
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The Theory of Atomic Spectra
Edward U. Condon,G. H. Shortley +1 more
TL;DR: In this paper, the quantum mechanical method is applied to the theory of complex spectra and the Russell-Saunders case is used to obtain the energy levels of one-electron spectra.
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The Theory of Atomic Spectra
Edward U. Condon,G. H. Shortley +1 more
TL;DR: In this paper, the quantum mechanical method is applied to the theory of complex spectra and the Russell-Saunders case is used to obtain the energy levels of one-electron spectra.
Journal ArticleDOI
GRASP: A general-purpose relativistic atomic structure program
TL;DR: The Oxford MCP/MCDF and MCBP/BENA packages have been rewritten in FORTRAN 77 and combined in the new code, GRASP, which is more versatile than its predecessors, contains more stable and accurate numerical procedures and a simplified but more flexible interface.
Journal ArticleDOI
Quantum defect theory
TL;DR: Quantum defect theory (QDT) as mentioned in this paper is a unified theory of bound states, including series perturbations, autoionisation and electron-ion scattering, both elastic and inelastic.