Issue |
A&A
Volume 398, Number 3, February II 2003
|
|
---|---|---|
Page(s) | 1179 - 1184 | |
Section | Atomic, molecular, and nuclear data | |
DOI | https://doi.org/10.1051/0004-6361:20021654 | |
Published online | 28 January 2003 |
Ion contribution to the prominent Ne I, Ar I and Kr I spectral line broadening
1
Faculty of Physics, University of Belgrade, PO Box 368, Belgrade, Serbia, Yugoslavia
2
Isaac Newton Institute of Chile, Yugoslavia Branch, Belgrade, Yugoslavia
3
Hungarian Academy of Sciences, Budapest, Hungary
Corresponding authors: V. Milosavljević, vladimir@ff.bg.ac.yu steva@ff.bg.ac.yu
Received:
23
August
2002
Accepted:
16
October
2002
On the basis of the observed asymmetry of the measured
spectral line profiles we have obtained the ion contribution to
the (26 lines),
(19 lines) and
(20 lines) spectral line broadening due to the quasi-static ion
approximation and ion-dynamical effects. The ion broadening
parameters (A) and the ion dynamic coefficients (D) have been
obtained directly by the use of our line deconvolution procedure
which allows the determination of the basic physical properties
that characterize the line profile and also the relevant plasma
parameters. We are the first to publish experimental data, viz.
D and A values for the
,
and
lines. The 26
, 6
and 9
A values are the first measured data and many of
them are the first published data in this field. We have found
clear evidence of the quasi-static ion and ion-dynamical effects
on the investigated line shapes; they play a much more important
role than the approaches based on semiclassical theory provide,
especially in the case of the
spectral lines. This is
of importance for astrophysical plasma modeling and diagnostics.
Key words: plasmas / line: profiles / atomic data
© ESO, 2003
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.