Issue |
A&A
Volume 425, Number 1, October I 2004
|
|
---|---|---|
Page(s) | 361 - 365 | |
Section | Atomic, molecular, and nuclear data | |
DOI | https://doi.org/10.1051/0004-6361:20041197 | |
Published online | 10 September 2004 |
Stark broadening and transition probability ratios in the Mg I spectrum
Faculty of Physics, University of Belgrade, 11 001 Belgrade, PO Box 368, Serbia e-mail: steva@ff.bg.ac.yu
Received:
30
April
2004
Accepted:
17
June
2004
Stark widths (W) and shifts (d) of the six astrophysically important 285.212,
383.230, 383.829, 516.732, 517.268, and 518.360 nm neutral magnesium (Mg I)
spectral lines in the and
transitions have been measured in laboratory helium plasma at about 50 000 K electron temperature
and 1
1023 m-3 electron density. They represent the first measured
values and, also, the first experimental W and d data in the mentioned transitions.
Using the relative line intensity ratios of the lines in the mentioned transitions we have obtained the ratios of corresponding transition probability values (Einstein's A values). They represent the first experimental data based on the analysis of the Mg I emission spectral lines.
We have found agreement with theoretical transition probability ratios tabulated by NIST.
Key words: atomic data / line: profiles
© ESO, 2004
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.