Atomic data and spectral line intensities for Mg VI

Journal Article · Mon Jan 15 04:00:00 EST 2007 · Atomic Data and Nuclear Data Tables

DOI:https://doi.org/10.1016/j.adt.2006.06.001· OSTI ID:20900833

Landi, E ^[1]; Bhatia, A K ^[2]

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1. ARTEP, Inc. at Naval Research Laboratory, Washington, DC 20375 (United States)
2. NASA/Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

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.

• OSTI ID: 20900833
• Journal Information: Atomic Data and Nuclear Data Tables, Journal Name: Atomic Data and Nuclear Data Tables Journal Issue: 1 Vol. 93; ISSN ADNDAT; ISSN 0092-640X
• Country of Publication: United States
• Language: English

Related Subjects

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