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Theoretical Stark broadening parameters for spectral lines arising from the 2p5ns, 2p5np and 2p5nd electronic configurations of MgIII
Colón Hernández, Cristobal and Moreno-Diaz, Cristina and Alonso Medina, Aurelia
Theoretical Stark broadening parameters for spectral lines arising from the 2p5ns, 2p5np and 2p5nd electronic configurations of MgIII.
"Monthly Notices of the Royal Astronomical Society", v. 435
||Theoretical Stark broadening parameters for spectral lines arising from the 2p5ns, 2p5np and 2p5nd electronic configurations of MgIII
Colón Hernández, Cristobal
Alonso Medina, Aurelia
|Título de Revista/Publicación:
||Monthly Notices of the Royal Astronomical Society
||Atomic Data, Atomic Processes
||E.U.I.T. Industrial (UPM)
||Física Aplicada [hasta 2014]
|Creative Commons Licenses:
||Recognition - No derivative works - Non commercial
In the present work we report theoretical Stark widths and shifts calculated using the Griem
semi-empirical approach, corresponding to 237 spectral lines of MgIII. Data are presented for
an electron density of 1017 cm?3 and temperatures T = 0.5?10.0 (104 K). The matrix elements
used in these calculations have been determined from 23 configurations of MgIII: 2s22p6,
2s22p53p, 2s22p54p, 2s22p54f and 2s22p55f for even parity and 2s22p5ns (n = 3?6), 2s22p5nd
(n = 3?9), 2s22p55g and 2s2p6np (n = 3?8) for odd parity. For the intermediate coupling (IC)
calculations, we use the standard method of least-squares fitting from experimental energy
levels by means of the Cowan computer code. Also, in order to test the matrix elements used
in our calculations, we present calculated values of 70 transition probabilities of MgIII spectral
lines and 14 calculated values of radiative lifetimes of MgIII levels. There is good agreement
between our calculations and experimental radiative lifetimes. Spectral lines of MgIII are
relevant in astrophysics and also play an important role in the spectral analysis of laboratory
plasma. Theoretical trends of the Stark broadening parameter versus the temperature for
relevant lines are presented. No values of Stark parameters can be found in the bibliography.
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