| Issue |
A&A
Volume 409, Number 2, October II 2003
|
|
|---|---|---|
| Page(s) | 771 - 780 | |
| Section | Atomic, molecular, and nuclear data | |
| DOI | https://doi.org/10.1051/0004-6361:20031133 | |
| Published online | 17 November 2003 | |
Measurement of Stark parameters of HeII P\alpha, P\beta and P\gamma spectral lines
Departamento de Optica y Física Aplicada, Facultad de Ciencias, Universidad de Valladolid, 47071 Valladolid, Spain
Corresponding author: Dr. J. A. Aparicio, apa@opt.uva.es
Received:
24
March
2003
Accepted:
7
July
2003
This work reports information on the pressure broadened profiles
of the HeII Pα, Pβ and P
spectral
lines measured in a pulsed discharge lamp. Information
relative to the line shapes, full width at 1/2, 1/4 and 1/8 of the
maximum intensity and the dip of the HeII 320.3 nm is provided. The
electron density has been determined by two-wavelength interferometry
and from the Stark width of the HeI 501.6 nm. and ranges during the
HeII emission from 0.54 to 
m-3 in the
plasma. Temperature (1.7–2.4 eV) has been simultaneously determined
from the Boltzmann-plot of HeI and from local thermodynamic
equilibrium (LTE) assumptions. The final results have been compared with
most of the previous existing data.
Key words: atomic data / line: profiles / plasmas / methods: laboratory
© ESO, 2003
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