Ab initio calculations of Ca III Stark broadening parameters,transition probabilities and radiative lifetimes

Alonso Medina, Aurelia y Colón Hernández, Cristobal (2013). Ab initio calculations of Ca III Stark broadening parameters,transition probabilities and radiative lifetimes. "Monthly Notices of the Royal Astronomical Society", v. 431 (n. 3); pp. 2703-2715. ISSN 0035-8711. https://doi.org/10.1093/mnras/stt356.

Descripción

Título: Ab initio calculations of Ca III Stark broadening parameters,transition probabilities and radiative lifetimes
Autor/es:
  • Alonso Medina, Aurelia
  • Colón Hernández, Cristobal
Tipo de Documento: Artículo
Título de Revista/Publicación: Monthly Notices of the Royal Astronomical Society
Fecha: Mayo 2013
Volumen: 431
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

We have determined matrix elements for all experimental configurations of Ca III, including the 3s3p63d configuration. These values have been obtained using intermediate coupling (IC). For these IC calculations, we have used the standard method of least-squares fitting from the experimental energy levels, using the computer code developed by Robert Cowan. In this paper, using these matrix elements, we report the calculated values of the Ca III Stark widths and shifts for 148 spectral lines, of 56 Ca III spectral line transition probabilities and of eight radiative lifetimes of Ca III levels. The Stark widths and shifts, calculated using the Griem semi-empirical approach, correspond to the spectral lines of Ca III and are presented for an electron density of 1017 cm?3 and temperatures T = 1.0?10.0 (×104 K). The theoretical trends of the Stark broadening parameter versus the temperature are presented for transitions that are of astrophysical interest. There is good agreement between our calculations, for transition probabilities and radiative lifetimes, and the experimental values presented in the literature. We have not been able to find any values for the Stark parameters in the references.

Más información

ID de Registro: 21336
Identificador DC: http://oa.upm.es/21336/
Identificador OAI: oai:oa.upm.es:21336
Identificador DOI: 10.1093/mnras/stt356
URL Oficial: http://mnras.oxfordjournals.org/content/431/3/2703.abstract
Depositado por: Memoria Investigacion
Depositado el: 18 Oct 2013 07:23
Ultima Modificación: 21 Abr 2016 11:38
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