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
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ELECTRON-ION RECOMBINATION RATE COEFFICIENTS AND PHOTOIONIZATION CROSS SECTIONS FOR ASTROPHYSICALLY ABUNDANT ELEMENTS. VIII. Ar xiii WITH NEW FEATURES
TL;DR: In this article, a unified method for photoionization and electron-ion recombination was proposed, which subsumes both the radiative recombination and dielectronic recombination within the framework of close-coupling formulations using the R-matrix method.
Journal ArticleDOI
Absolute cross sections for near-threshold electron-impact excitation of Be-like C2+, N3+, and O4+ ions
Mark E. Bannister,N. Djurić,O. Woitke,Gordon H. Dunn,Y.-S. Chung,Alan Smith,B. Wallbank,K.A Berrington +7 more
TL;DR: In this article, the absolute total cross sections for electron-impact excitation of Be-like C2+, N3+, and O4+ ions have been measured near threshold using the merged electron-ion beams energy-loss (MEIBEL) technique and calculated using a close-coupling R-matrix (CCR) approach.
Journal ArticleDOI
Atomic data for astrophysics: Ni XI
TL;DR: In this paper, a large-scale R-matrix scattering calculation for electron collisional excitation of Ni xi, carried out with the intermediate-coupling frame transformation method, is presented.
Journal ArticleDOI
Photoionization and recombination of Fe xix
Hong Lin Zhang,Anil K. Pradhan +1 more
TL;DR: In this paper, the L-shell ground-state fine-structure levels 2s22p43P2,0,1 of Fe xix were compared with the results of Donnelly et al. who obtained the LS rates to be higher than their BPRM results by about a factor of 2.
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Electron-impact excitation and ionization of ? for the determination of impurity influx in tokamaks
TL;DR: In this paper, a collisional-radiative modelling program was proposed to obtain SXB ratios for the radiative transitions and the impurity influx when only the ground term contributes to the ionization of a localized source.
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.