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
An Effective Eigenchannel R-Matrix Method for Calculating Electron-Ion Scattering Processes with Spectroscopic Precision
TL;DR: Based on the Breit-Pauli and Dirac R-matrix theory, this article developed two eigen-channel Rmatrix codes, referred to as R-eigen (non-relelativistic eigenchannel R-Matrix) and R-R-Eigen (relativistic Eigen Channel R-Matrix), to directly calculate the physical quantities in multichannel quantum defect theory in the whole energy regions.
Journal ArticleDOI
R-matrix electron-impact excitation data for the N-like iso-electronic sequence
TL;DR: In this article, the authors used the R-matrix intermediate coupling frame transformation method to calculate the collision strengths for all transitions up to n l ǫ = 5d over a wide range of temperatures for N-like ions from O´II to Zn´XXIV.
Journal ArticleDOI
Theoretical study of the valence and K-shell spectra of atmospherically relevant CO2
E. Olalla,Inmaculada Martin +1 more
TL;DR: In this article, a comparative analysis is made throughout the discrete and continuous spectral regions with the results of previously reported experimental and theoretical studies for both the nonbonding orbitals constituent of the outer valence shell and the atomic-like K-shell of CO2.
Journal ArticleDOI
Electron Impact Excitation Collision Strengths for Fe X
TL;DR: In this paper, the collision strength for transitions between fine-structure levels of the 3s23p5, 3s3p6, 3 s23p43d, 3 S3p53d, and 3 S23p44s configurations in Fe X is calculated using semirelativistic R-matrix approach which takes into account parts of the Breit-Pauli Hamiltonian.
Journal ArticleDOI
Scaling of collision strengths for highly-excited states of ions of the H- and He-like sequences
TL;DR: In this paper, the behavior of the electron-impact excitation collision strengths and effective collision strengths for the most important transitions used to model electron collision dominated astrophysical plasmas, solar, for example.
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.
Book
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.