Database NORAD-Atomic-Data for Atomic Processes in Plasma
Reads0
Chats0
TLDR
The online database of NORAD-Atomic-Data, where NORAD stands for Nahar OSU Radiative, is part of the data sources of the two international collaborations of the Opacity Project (OP) and the Iron Project (IP) as discussed by the authors.Abstract:
The online atomic database of NORAD-Atomic-Data, where NORAD stands for Nahar OSU Radiative, is part of the data sources of the two international collaborations of the Opacity Project (OP) and the Iron Project (IP). It contains large sets of parameters for the dominant atomic processes in astrophysical plasmas, such as, (i) photo-excitation, (ii) photoionization, (iii) electron–ion recombination, (iv) electron–impact excitations. The atomic parameters correspond to tables of energy levels, level-specific total photoionization cross-sections, partial photoionization cross-sections of all bound states for leaving the residual ion in the ground state, partial cross-sections of the ground state for leaving the ion in various excited states, total level-specific electron–ion recombination rate coefficients that include both the radiative and dielectronic recombination, total recombination rate coefficients summed from contributions of an infinite number of recombined states, total photo-recombination cross-sections and rates with respect to photoelectron energy, transition probabilities, lifetimes, collision strengths. The database was created after the first two atomic databases, TOPbase under the OP and TIPbase under the IP. Hence the contents of NORAD-Atomic-Data are either new or from repeated calculations using a much larger wave function expansion making the data more complete. The results have been obtained from the R-matrix method using the close-coupling approximation developed under the OP and IP, and from atomic structure calculations using the program SUPERSTRUCTURE. They have been compared with available published results which have been obtained theoretically and experimentally, and are expected to be of high accuracy in general. All computations were carried out using the computational facilities at the Ohio Supercomputer Center (OSC) starting in 1990. At present it contains atomic data for 154 atomic species, 98 of which are lighter atomic species with nuclear charge Z ≤ 28 and 56 are heavier ones with Z > 28. New data are added with publications.read more
Citations
More filters
Journal ArticleDOI
Atomic data from the Iron Project XLV. Relativistic transition probabilities for carbon-like Ar XIII and Fe XXI using Breit-Pauli R-matrix method
TL;DR: In this paper, the Breit-Pauli R-matrix was used to obtain extensive sets of oscillator strengths and transition probabilities for dipole allowed and intercombination fine structure transitions in carbon like ions, Ar XIII and Fe XXI.
Journal ArticleDOI
Structure Calculations in Nd III and U III Relevant for Kilonovae Modelling
TL;DR: In this paper , the atomic structure calculations for lanthanide and actinide ions, which are important in kilonovae modelling of ejecta spectra, were achieved.
Journal ArticleDOI
Photoionization and Electron-Ion Recombination of n = 1 to Very High n-Values of Hydrogenic Ions
TL;DR: A brief review of the earlier precise methodologies for hydrogen, and numerical tables of photoionization cross sections (σPI) and electron-ion recombination rate coefficients (αRC) obtained from recombination cross sections for all n values going to a very high value of 800 are presented in this paper.
Journal ArticleDOI
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>L</mml:mi></mml:math> -shell photoionization of Mg-like <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msup><mml:mrow><mml:mi mathvariant="normal">S</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn><mml:mo>+</mml:mo></mml
Jean-Paul Mosnier,Eugene T. Kennedy,D. Cubaynes,Jean-Marc Bizau,S. Guilbaud,M. F. Hasoglu,Christophe P. Blancard,T. W. Gorczyca +7 more
TL;DR: In this article , the absolute photoionization cross sections of magnesium-like ions over the 158-280 eV photon energy range were measured with the multianalysis ion apparatus at the SOLEIL synchrotron radiation facility.
Journal ArticleDOI
Implementation of high-resolution spectroscopy for ion (and electron) temperature measurements of the divertor plasma in the Tokamak à configuration variable.
L. Martinelli,D. Mikitchuck,B. P. Duval,Y. Andrebe,P. Blanchard,Olivier Février,S. Gorno,H. Elaian,B. Linehan,A. Perek,Christine Stollberg,B. Vincent +11 more
TL;DR: In this paper , the Divertor Spectroscopy System (DSS) access to He II ion temperature measurements over a broad range, ≈0.5-15 eV, with an uncertainty of <10% for most of the studied plasma discharges.
References
More filters
Journal ArticleDOI
Techniques for the calculation of atomic structures and radiative data including relativistic corrections
TL;DR: Superstructure as mentioned in this paper is a general-purpose automatic atomic-structure program that uses multi-configuration type expansions to calculate term energies, intermediate-coupling energy levels, term coupling coefficients, and cascade coefficients.
Journal ArticleDOI
RMATRX1: Belfast atomic R-matrix codes
TL;DR: 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.
Journal ArticleDOI
An atomic multiconfigurational Dirac-Fock package
Book ChapterDOI
The R-Matrix Theory of Atomic Processes
Philip G. Burke,W. D. Robb +1 more
TL;DR: The R-matrix concept of atomic processes was first introduced by Wigner and Eisenbud as mentioned in this paper with the fundamental idea that configuration space describes the scattered particle, and the target is divided into two regions.
Journal ArticleDOI
Atomic data for opacity calculations. I. General description
TL;DR: In this paper, the authors give some of the formulae from thermodynamics and atomic physics which are required for opacity calculations, which are used to obtain improved values for opacities in stellar envelopes.