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

Alonso Medina, Aurelia and Colón Hernández, Cristóbal (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.

Description

Title: Ab initio calculations of Ca III Stark broadening parameters,transition probabilities and radiative lifetimes
Author/s:
  • Alonso Medina, Aurelia
  • Colón Hernández, Cristóbal
Item Type: Article
Título de Revista/Publicación: Monthly Notices of the Royal Astronomical Society
Date: May 2013
ISSN: 0035-8711
Volume: 431
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

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (347kB) | Preview

Abstract

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.

More information

Item ID: 21336
DC Identifier: http://oa.upm.es/21336/
OAI Identifier: oai:oa.upm.es:21336
DOI: 10.1093/mnras/stt356
Official URL: http://mnras.oxfordjournals.org/content/431/3/2703.abstract
Deposited by: Memoria Investigacion
Deposited on: 18 Oct 2013 07:23
Last Modified: 05 Mar 2019 09:39
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM