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Atoms 2015, 3(1), 2-52; doi:10.3390/atoms3010002

Ab-Initio Calculations of Level Energies, Oscillator Strengths and Radiative Rates for E1 Transitions in Beryllium-Like Iron

1
Physics Department, Faculty of Science, Al-Azhar University Assiut, 71524 Assiut, Egypt
2
Institut für Atom- und Molekülphysik, Justus-Liebig-Universität Giessen, D-35392 Giessen, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: James F. Babb
Received: 10 November 2014 / Accepted: 9 January 2015 / Published: 20 January 2015
(This article belongs to the Special Issue Atomic Data for Tungsten)
View Full-Text   |   Download PDF [410 KB, uploaded 20 January 2015]

Abstract

In the present work, energy levels, oscillator strengths, radiative rates and wavelengths of Be-like iron (Fe\(^{22+}\)) from ab-initio calculations using the multiconfiguration Dirac-Hartree-Fock method are presented. These quantities have been calculated for a set of configurations in the general form \(1s^2\,nl\,n'l'\) where \(n=2,3\) and \(\,n'=2,3,4,5\) and \(l=s,p,d\) and \(\,l'=s, p, d, f, g\). In addition, excitations of up to four electrons, including core-electron excitations, have been considered to improve the quality of the wave functions. This study comprises an extensive set of E1 transition rates between states with different \(J\). The present results are compared with the available experimental and theoretical data. View Full-Text
Keywords: energy levels; oscillator strengths; radiative rates; be-like iron energy levels; oscillator strengths; radiative rates; be-like iron
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

El-Maaref, A.A.; Schippers, S.; Müller, A. Ab-Initio Calculations of Level Energies, Oscillator Strengths and Radiative Rates for E1 Transitions in Beryllium-Like Iron. Atoms 2015, 3, 2-52.

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