Issue |
A&A
Volume 547, November 2012
|
|
---|---|---|
Article Number | A87 | |
Number of page(s) | 12 | |
Section | Atomic, molecular, and nuclear data | |
DOI | https://doi.org/10.1051/0004-6361/201220277 | |
Published online | 01 November 2012 |
R-matrix electron-impact excitation data for the B-like iso-electronic sequence⋆
1
National Astronomical Observatories, CAS,
100012
Beijing,
PR China
2
Department of Physics, University of Strathclyde,
Glasgow, G4 0NG, UK
e-mail: gyliang@bao.ac.cn
Received: 23 August 2012
Accepted: 25 September 2012
We have carried-out parallel intermediate-coupling frame transformation R-matrix calculations for electron-impact excitation amongst the 204 close-coupling levels of the 2sx2py (x + y = 3), 2s2{3,4}l, 2s2p{3,4}l, and 2p23l configurations for all boron-like ions from C+ to Kr31+. We have also included the configuration interaction due to the 2p24l, 2s3l3l′ and 2p3s3l configurations. A detailed comparison has been made of the target structure and excitation data for four specific ions (viz., Ne5+, Ar13+, Fe21+ and Kr31+) that span the sequence, so as to assess the accuracy over the entire sequence. Effective collision strengths (Υs) are presented at temperatures ranging from 2 × 102(z + 1)2 K to 2 × 106(z + 1)2 K (where z is the residual charge of the ions, i.e. Z − 5). Detailed comparisons for the (effective) collision strengths (Υs) Ω are made with the results of previous calculations for the four representative ions. Furthermore, we examine the iso-electronic trends of the effective collision strengths as a function of temperature.
Key words: atomic data / atomic processes / plasmas
These data are made available in the archives of APAP via http://www.apap-network.org, OPEN-ADAS via http://open.adas.ac.uk as well as at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/547/A87
© ESO, 2012
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