Theoretical Stark broadening parameters for spectral lines arising from the 2p5ns, 2p5np and 2p5nd electronic configurations of Mg III

Colón Hernández, Cristóbal and Moreno-Diaz, Cristina and Alonso Medina, Aurelia (2013). Theoretical Stark broadening parameters for spectral lines arising from the 2p5ns, 2p5np and 2p5nd electronic configurations of Mg III. "Monthly Notices of the Royal Astronomical Society", v. 435 (n. 2); pp. 1749-1757. ISSN 0035-8711. https://doi.org/10.1093/mnras/stt1413.

Description

Title: Theoretical Stark broadening parameters for spectral lines arising from the 2p5ns, 2p5np and 2p5nd electronic configurations of Mg III
Author/s:
  • Colón Hernández, Cristóbal
  • Moreno-Diaz, Cristina
  • Alonso Medina, Aurelia
Item Type: Article
Título de Revista/Publicación: Monthly Notices of the Royal Astronomical Society
Date: October 2013
ISSN: 0035-8711
Volume: 435
Subjects:
Freetext Keywords: Atomic Data, Atomic Processes
Faculty: E.U.I.T. Industrial (UPM)
Department: Física Aplicada [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

More information

Item ID: 21401
DC Identifier: http://oa.upm.es/21401/
OAI Identifier: oai:oa.upm.es:21401
DOI: 10.1093/mnras/stt1413
Official URL: http://mnras.oxfordjournals.org/content/early/2013/08/29/mnras.stt1413.abstract
Deposited by: Memoria Investigacion
Deposited on: 23 Oct 2013 08:31
Last Modified: 01 Oct 2019 15:46
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