J/A+A/561/A135 HeI lines Stark broadening (Gigosos+, 2014)
Stark broadening of lines from transition between states n=3 to n=2 in neutral
helium. An experimental and computer simulation study.
Gigosos M.A., Djurovic S., Savic I., Gonalez-Herrero D., Mijatovic Z.,
Kovilarov R.
<Astron. Astrophys. 561, A135 (2014)>
=2014A&A...561A.135G 2014A&A...561A.135G
ADC_Keywords: Atomic physics
Keywords: line: profiles - plasmas - techniques: spectroscopic -
methods: numerical - methods: laboratory: atomic -
instrumentation: spectrographs
Abstract:
The Stark broadening of the spectral lines of the wavelengths 501.6,
667.8, 728.1, 388.9, 587.6, and 706.5nm from neutral helium in
plasmas are studied theoretically and experimentally.
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.
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
HeI 447.1nm and HeI 492.2nm 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
SiII.
Description:
The table contains the Full Width at Half Maximum (FWHM) and Peak
Shift of the HeI lines of 501.6, 667.8, 728.1, 388.9, 587.6 and
706.5nm for electron density value between 1*1021 and 1*1024m-3,
temperature between 5000 and 60000K and given value of the reduced
mass of pair emitter-ionic perturber.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables.dat 150 368 Full Width at Half Maximum and Peak Shift of
HeI lines (tables 6-29 of the paper)
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See also:
VI/82 : Stark broadening of H lines (Stehle 1995)
VI/98 : Stark broadening of H lines (Stehle+, 1999)
J/ApJS/170/251 : Multiplet table for neutral helium (Drake+, 2007)
J/A+A/542/A75 : Stark broadening for the HeI 492.2 line (Lara+, 2012)
Byte-by-byte Description of file: tables.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- El [He I] Element
6- 9 I4 0.1nm lambda [3889/7281] Wavelength in Angstroms (1)
11- 14 F4.1 mp mu [0.8/10] Reduced mass of the pair
emitter-ionic perturber, in proton mass unit
(values 0.8, 2, 4, 10)
16- 24 E9.4 m-3 Ne [1.e21/1.e24] Electron density
26- 34 E9.4 nm FWHM5 FWHM of HeI line at T=5000K
36- 45 E10.4 nm Shift5 Shift of HeI line at T=5000K
47- 55 E9.4 nm FWHM10 FWHM of HeI line at T=10000K
57- 66 E10.4 nm Shift10 Shift of HeI line at T=10000K
68- 76 E9.4 nm FWHM20 FWHM of HeI line at T=20000K
78- 87 E10.4 nm Shift20 Shift of HeI line at T=20000K
89- 97 E9.4 nm FWHM30 FWHM of HeI line at T=30000K
99-108 E10.4 nm Shift30 Shift of HeI line at T=30000K
110-118 E9.4 nm FWHM40 FWHM of HeI line at T=40000K
120-129 E10.4 nm Shift40 Shift of HeI line at T=40000K
131-139 E9.4 nm FWHM60 FWHM of HeI line at T=60000K
141-150 E10.4 nm Shift60 Shift of HeI line at T=60000K
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Note (1): Wavelengths: 3889, 5016, 5876, 6678, 7065 and 7281Å.
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Acknowledgements:
Marco Antonio Gigosos, gigosos(at)coyanza.opt.cie.uva.es
(End) Patricia Vannier [CDS] 11-Dec-2013