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Title: Atomic data and spectral line intensities for Mg VI

Abstract

Electron impact collision strengths, energyels, oscillator strengths, and spontaneous radiative decay rates are calculated for Mg VI. The configurations used are 2s{sup 2}2p{sup 3}, 2s2p{sup 4}, 2p{sup 5}, 2s{sup 2}2p{sup 2}3s, 2s{sup 2}2p{sup 2}3p, and 2s{sup 2}2p{sup 2}3d, giving rise to 72 fine-structure levels in intermediate coupling. Collision strengths are calculated at five incident energies, 12, 24, 36, 48, and 60 Ry. Excitation rate coefficients are calculated as a function of electron temperature by assuming a Maxwellian electron velocity distribution. Using the excitation rate coefficients and the radiative transition rates, statistical equilibrium equations for level populations are solved at electron densities covering the range of 10{sup 8}-10{sup 14} cm{sup -3} at an electron temperature of log T {sub e} (K) = 5.6, corresponding to maximum abundance of Mg VI. Relative and absolute spectral line intensities are calculated and compared with observations of a solar active region.

Authors:
 [1];  [2]
  1. ARTEP, Inc. at Naval Research Laboratory, Washington, DC 20375 (United States). E-mail: landi@poppeo.nrl.navy.mil
  2. NASA/Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
Publication Date:
OSTI Identifier:
20900833
Resource Type:
Journal Article
Resource Relation:
Journal Name: Atomic Data and Nuclear Data Tables; Journal Volume: 93; Journal Issue: 1; Other Information: DOI: 10.1016/j.adt.2006.06.001; PII: S0092-640X(06)00039-8; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ABUNDANCE; ELECTRON BEAMS; ELECTRON DENSITY; ELECTRON TEMPERATURE; ELECTRON-ATOM COLLISIONS; ENERGY LEVELS; EQUILIBRIUM; EXCITATION; FINE STRUCTURE; INTERMEDIATE COUPLING; MAGNESIUM; MAXWELL EQUATIONS; NUCLEAR DATA COLLECTIONS; OSCILLATOR STRENGTHS; RADIATIVE DECAY; VELOCITY

Citation Formats

Landi, E., and Bhatia, A.K. Atomic data and spectral line intensities for Mg VI. United States: N. p., 2007. Web. doi:10.1016/j.adt.2006.06.001.
Landi, E., & Bhatia, A.K. Atomic data and spectral line intensities for Mg VI. United States. doi:10.1016/j.adt.2006.06.001.
Landi, E., and Bhatia, A.K. Mon . "Atomic data and spectral line intensities for Mg VI". United States. doi:10.1016/j.adt.2006.06.001.
@article{osti_20900833,
title = {Atomic data and spectral line intensities for Mg VI},
author = {Landi, E. and Bhatia, A.K.},
abstractNote = {Electron impact collision strengths, energyels, oscillator strengths, and spontaneous radiative decay rates are calculated for Mg VI. The configurations used are 2s{sup 2}2p{sup 3}, 2s2p{sup 4}, 2p{sup 5}, 2s{sup 2}2p{sup 2}3s, 2s{sup 2}2p{sup 2}3p, and 2s{sup 2}2p{sup 2}3d, giving rise to 72 fine-structure levels in intermediate coupling. Collision strengths are calculated at five incident energies, 12, 24, 36, 48, and 60 Ry. Excitation rate coefficients are calculated as a function of electron temperature by assuming a Maxwellian electron velocity distribution. Using the excitation rate coefficients and the radiative transition rates, statistical equilibrium equations for level populations are solved at electron densities covering the range of 10{sup 8}-10{sup 14} cm{sup -3} at an electron temperature of log T {sub e} (K) = 5.6, corresponding to maximum abundance of Mg VI. Relative and absolute spectral line intensities are calculated and compared with observations of a solar active region.},
doi = {10.1016/j.adt.2006.06.001},
journal = {Atomic Data and Nuclear Data Tables},
number = 1,
volume = 93,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}