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Title: Excitation energies and transition rates in magnesiumlike ions

Abstract

Excitation energies, transition probabilities, and lifetimes are calculated for 3l{sub 1}3l{sub 2}-3l{sub 3}3l{sub 4} electric dipole transitions in Mg-like ions with nuclear charges Z ranging from 13 to 100. Relativistic many-body perturbation theory (MBPT), including the Breit interaction, is used to evaluate retarded E1 matrix elements in length and velocity forms. The calculations start from a 1s{sup 2}2s{sup 2}2p{sup 6} Dirac-Fock potential. First-order perturbation theory is used to obtain intermediate coupling coefficients, and the second-order MBPT is used to determine the matrix elements. The contributions from negative-energy states are included in the second-order E1 matrix elements to achieve agreement between length-form and velocity-form amplitudes. The resulting transition energies and lifetimes are compared with experimental values and with results from other recent calculations. (c) 2000 The American Physical Society.

Authors:
 [1];  [1];  [1]
  1. Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
Publication Date:
OSTI Identifier:
20216403
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 61; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ENERGY-LEVEL TRANSITIONS; EXCITATION; MAGNESIUM 20; ATOMIC IONS; E1-TRANSITIONS; LIFETIME; MANY-BODY PROBLEM; MULTICHARGED IONS; PERTURBATION THEORY; EXPERIMENTAL DATA; THEORETICAL DATA

Citation Formats

Safronova, U. I., Johnson, W. R., and Berry, H. G. Excitation energies and transition rates in magnesiumlike ions. United States: N. p., 2000. Web. doi:10.1103/PhysRevA.61.052503.
Safronova, U. I., Johnson, W. R., & Berry, H. G. Excitation energies and transition rates in magnesiumlike ions. United States. doi:10.1103/PhysRevA.61.052503.
Safronova, U. I., Johnson, W. R., and Berry, H. G. Mon . "Excitation energies and transition rates in magnesiumlike ions". United States. doi:10.1103/PhysRevA.61.052503.
@article{osti_20216403,
title = {Excitation energies and transition rates in magnesiumlike ions},
author = {Safronova, U. I. and Johnson, W. R. and Berry, H. G.},
abstractNote = {Excitation energies, transition probabilities, and lifetimes are calculated for 3l{sub 1}3l{sub 2}-3l{sub 3}3l{sub 4} electric dipole transitions in Mg-like ions with nuclear charges Z ranging from 13 to 100. Relativistic many-body perturbation theory (MBPT), including the Breit interaction, is used to evaluate retarded E1 matrix elements in length and velocity forms. The calculations start from a 1s{sup 2}2s{sup 2}2p{sup 6} Dirac-Fock potential. First-order perturbation theory is used to obtain intermediate coupling coefficients, and the second-order MBPT is used to determine the matrix elements. The contributions from negative-energy states are included in the second-order E1 matrix elements to achieve agreement between length-form and velocity-form amplitudes. The resulting transition energies and lifetimes are compared with experimental values and with results from other recent calculations. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevA.61.052503},
journal = {Physical Review. A},
issn = {1050-2947},
number = 5,
volume = 61,
place = {United States},
year = {2000},
month = {5}
}