Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Measured Stark Widths of Several Sn I and Sn II Spectral Lines in a Laser-induced Plasma
Year:2008
Research Areas
  • Astronomy,
  • Astrophysics,
  • Physics - Atomic and molecular physics
Information
Abstract
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.
International
Si
JCR
Si
Title
ASTROPHYSICAL JOURNAL
ISBN
0004-637X
Impact factor JCR
6,405
Impact info
Volume
672
10.1086/523844
Journal number
2
From page
1286
To page
1291
Month
ENERO
Ranking
Participants
  • Autor: Cristobal Colon Hernandez (UPM)
  • Autor: Aurelia Alonso Medina (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: 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)