Observatorio de I+D+i UPM

Memorias de investigación
Artículos en revistas:
Measured Stark Widths of Several Sn I and Sn II Spectral Lines in a Laser-induced Plasma
Año:2008
Áreas de investigación
  • Astronomía,
  • Astrofísica,
  • Fisica am -- fisica atomica y molecular
Datos
Descripción
Data on Stark widths of spectral lines are of high interest for astrophysics and analytical techniques of stellar plasma diagnosis. Stark widths of 43 spectral lines of Sn I and 27 spectral lines of Sn II has been measured in a laser-induced plasma (LIP) at an electron temperature of 11,000 K and an electron density of 1.1 × 1016 cm−3. The LIP optical emission spectroscopy generated by a 10640 Å radiation, with a flux of 1.4 × 1010 W cm−2 on several tin and lead targets in an atmosphere of argon was recorded at 2.5 μs and analyzed between 1890 and 7000 Å. The population level distribution and the corresponding temperatures were obtained using Boltzmann plots. The plasma electron densities were determined using well-known Stark broadening parameters of spectral lines. Special attention was dedicated to the possible self-absorption of the different transitions. The local thermodynamic equilibrium (LTE) conditions and plasma homogeneity have been checked. The experimental results obtained have been compared with the experimental and theoretical values given by other authors. The results obtained in this study will allow a substantial improvement in the interpretation of the data of the ultraviolet spectrum of the tin observed by the Goddard High Resolution Spectrograph aboard the Hubble Space Telescope. These atomic data are relevant to the analysis of the isotopic abundances of tin in stellar atmospheres.
Internacional
Si
JCR del ISI
Si
Título de la revista
ASTROPHYSICAL JOURNAL
ISSN
0004-637X
Factor de impacto JCR
6,405
Información de impacto
Volumen
672
DOI
10.1086/523844
Número de revista
2
Desde la página
1286
Hasta la página
1291
Mes
ENERO
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Cristobal Colon Hernandez (UPM)
  • Autor: Aurelia Alonso Medina (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Caracterización óptica de materiales
  • Departamento: Física Aplicada
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