| Issue |
A&A
Volume 500, Number 3, June IV 2009
|
|
|---|---|---|
| Page(s) | 1263 - 1269 | |
| Section | Atomic, molecular, and nuclear data | |
| DOI | https://doi.org/10.1051/0004-6361/200911866 | |
| Published online | 08 April 2009 | |
R-matrix electron-impact excitation data for the Na-like iso-electronic sequence*
Department of Physics, University of Strathclyde, Glasgow, G4 0NG, UK e-mail: guiyun.liang@strath.ac.uk
Received:
17
February
2009
Accepted:
26
March
2009
We present results for the outer-shell electron-impact
excitation of all Na-like ions from Mg+ to Kr25+ obtained
using the intermediate-coupling frame transformation R-matrix
approach. For each ion's calculation, the target and
close-coupling expansions are both taken to be the 18 LS terms (32 levels) belonging to configurations [ 1s22s22p6] 
, 
, 
and 
(l = 0-5). Effective collision strengths
(Υs) are presented at temperatures ranging from
2
102(q+1)2 K to 2106(q+1)2 K (where q is the
residual charge of ions, i.e. 
). Detailed comparisons for
the Υs are made with the results of previous calculations
for several ions, which span the sequence. Furthermore, we examine
the iso-electronic trends of both low- and high-temperature
effective collision strengths
Key words: atomic data / atomic processes / plasmas
© ESO, 2009
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