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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Calculation of fine-structure energy levels and autoionizing widths for the magnesium-like ions Ti XI and Fe XV
TL;DR: Quigley et al. as mentioned in this paper calculated highly excited fine-structure energy levels and their autoionizing widths for the 3pns,3P1(n=9-33), 3Pns,1P1 (n= 9-27), 3pnd-3D1(N=9 -35), 3mnd-1P(n = 8-26), 3nnd-2P(N = 6,8-29), 3dn-3d1(6,8 -28), and 3nf-3p1
Journal ArticleDOI
Electron Collision Rates for Ultraviolet and X-Ray Lines of S X
TL;DR: In this article, the Breit-Pauli R-matrix method was used to calculate the excitation energies and oscillator strengths for ultraviolet and X-ray lines arising from transitions between the fine-structure levels of the 2s22p3 4So, 2Do, and 2Po terms.
Journal ArticleDOI
A benchmark of the He-like triplet for ions with 6 ≤ Z ≤ 14 in Maxwellian and non-Maxwellian plasmas
TL;DR: In this paper, the effective collision strength of the He-like triplet of C V, N VI, O VII, Ne IX, Mg XI and Si XIII in collisionally dominated plasmas was assessed.
Journal ArticleDOI
Atomic structure and excitation cross section by electron impact of tungsten ions, W38+
A.A. El-Maaref,M. M. Abou Halaka,Mahmoud Tammam,Essam R. Shaaban,El Sayed Yousef,El Sayed Yousef +5 more
TL;DR: In this article, a set of configuration state functions with double excitations up to 5l orbitals have been included within the calculations of energy levels and transition probabilities for the intercombination transitions between 4d, and 4p54f.
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Partial Photoionization Cross Sections of Chromium from the Ground and Excited States
Oleg Zatsarinny,S. S. Tayal +1 more
TL;DR: In this paper, the B-spline R-matrix method has been used for the calculation of photoionization cross sections of neutral chromium from the ground and excited states in the low energy region.
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.