Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
STARK WIDTHS AND SHIFTS FOR SPECTRAL LINES OF Sn IV
Year:2016
Research Areas
  • Physics astrophysics - Cosmology,
  • Physics - Atomic and molecular physics
Information
Abstract
In this paper, we present theoretical Stark widths and shifts calculated corresponding to 66 spectral lines of Sn?iv. We use the Griem semi-empirical approach and the cowan computer code. For the intermediate coupling calculations, the standard method of least-squares fitting from experimental energy levels was used. Data are presented for an electron density of 1017 cm?3 and temperatures T = 1.1?5.0 (104 K). The matrix elements used in these calculations have been determined from 34 configurations of Sn?iv: 4d10ns(n = 5?10), 4d10nd(n = 5?8), 4d95s2, 4d95p2, 4d95s5d, 4d85s5p2 and 4d105g for even parity and 4d10np(n = 5?8), 4d10nf (n = 4?6), 4d95snp(n = 5?8), 4d85s25p and 4d95snf (n = 4?10) for odd parity. Also, in order to test the matrix elements used in our calculations, we present calculated values of radiative lifetimes of 14 levels of Sn?iv. There is good agreement between our calculations and the experimental radiative lifetimes obtained from the bibliography. The spectral lines of Sn?iv are observed in UV spectra of HD 149499 B obtained with the Far Ultraviolet Spectroscopic Explorer, the Goddard High Resolution Spectrograph and the International Ultraviolet Explorer. Theoretical trends of the Stark broadening parameter versus the temperature for relevant lines are presented. Also our values of Stark broadening parameters have been compared with the data available in the bibliography.
International
Si
JCR
Si
Title
Monthly Notices of the Royal Astronomical Society
ISBN
0035-8711
Impact factor JCR
5,521
Impact info
Datos JCR del año 2012
Volume
10.1093/mnras/stv2170
Journal number
455
From page
1145
To page
1155
Month
SIN MES
Ranking
Participants
  • Autor: Maria Isabel de Andres Garcia (UPM)
  • Autor: Aurelia Alonso Medina (UPM)
  • Autor: Cristobal Colon Hernandez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Departamento: Ingeniería Eléctrica, Electrónica Automática y 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)