Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Theoretical Stark broadening parameters for spectral lines arising from the 2p5ns, 2p5np and 2p5nd electronic configurations of MgIII
Year:2013
Research Areas
  • Physics - Atomic and molecular physics
Information
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.
International
Si
JCR
Si
Title
MNRAS
ISBN
0035-8711
Impact factor JCR
5,521
Impact info
Volume
435
10.1093/mnras/stt1413
Journal number
2
From page
1749
To page
1757
Month
SIN MES
Ranking
Participants
  • Autor: Aurelia Alonso Medina (UPM)
  • Autor: Cristobal Colon Hernandez (UPM)
  • Autor: Cristina Moreno-Diáz (EUITI Industrial. UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Análisis y Caracterización Óptica de Materiales
  • Departamento: Física Aplicada
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)