Please use this identifier to cite or link to this item:
https://open.uns.ac.rs/handle/123456789/29035
Title: | Stark broadening of lines from transition between states n = 3 to n = 2 in neutral helium: An experimental and computer-simulation study | Authors: | Gigosos M. A Djurović Stevica Savić Igor González Herrero D. Mijatovic Zoran Kobilarov Radomir |
Issue Date: | 2014 | Journal: | Astronomy and Astrophysics | Abstract: | Context. The Stark broadening of the spectral lines of the wavelengths 501.6, 667.8, 728.1, 388.9, 587.6, and 706.5 nm from neutral helium in plasmas are studied theoretically and experimentally. Aims. The aim of this work is to provide information about the connection between the shape and width of spectral lines and the electron density and temperature to be used as a diagnostic tool. Methods. The theoretical calculations were carried out through molecular dynamics computer simulations with noninteracting particles. The experimental measurements were done in a plasma of pure helium generated in an electromagnetically driven T-tube. The plasma diagnostics used previous results about the Stark broadening of the He I 447.1 nm and He I 492.2 nm lines and the coherence between the shape of these spectra and those obtained here. The electron temperature was obtained through a Boltzmann-plot of eight lines of Si II. Results. Several tables of width and shift are provided in a wide range of electron density and temperature. Furthermore, we supply several fitting formulas, which allow calculating the plasma electron density from the measured values of the spectral line widths. The results obtained in the laboratory and in the simulations are compared with the data from the literature. © 2014 ESO. | URI: | https://open.uns.ac.rs/handle/123456789/29035 | ISSN: | 0004-6361 | DOI: | 10.1051/0004-6361/201322866 |
Appears in Collections: | PMF Publikacije/Publications |
Show full item record
SCOPUSTM
Citations
21
checked on Nov 20, 2023
Page view(s)
15
Last Week
5
5
Last month
0
0
checked on May 10, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.