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

Colón Hernández, Cristobal; Moreno-Diaz, Cristina y Alonso Medina, Aurelia (2013). 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 (n. 2); pp. 1749-1757. ISSN 0035-8711. https://doi.org/10.1093/mnras/stt1413.

Descripción

Título: Theoretical Stark broadening parameters for spectral lines arising from the 2p5ns, 2p5np and 2p5nd electronic configurations of MgIII
Autor/es:
  • Colón Hernández, Cristobal
  • Moreno-Diaz, Cristina
  • Alonso Medina, Aurelia
Tipo de Documento: Artículo
Título de Revista/Publicación: Monthly Notices of the Royal Astronomical Society
Fecha: Octubre 2013
Volumen: 435
Materias:
Palabras Clave Informales: Atomic Data, Atomic Processes
Escuela: E.U.I.T. Industrial (UPM) [antigua denominación]
Departamento: Física Aplicada [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 21401
Identificador DC: http://oa.upm.es/21401/
Identificador OAI: oai:oa.upm.es:21401
Identificador DOI: 10.1093/mnras/stt1413
URL Oficial: http://mnras.oxfordjournals.org/content/early/2013/08/29/mnras.stt1413.abstract
Depositado por: Memoria Investigacion
Depositado el: 23 Oct 2013 08:31
Ultima Modificación: 21 Abr 2016 11:59
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