Atomic data from the IRON Project. L. Electron impact excitation of Fe xix
Abstract
Collision strengths and collisional rate parameters have been calculated for transitions among 92 n=2 and n=3 levels of Olike Fe xix. The method used is the BreitPauli Rmatrix formalism in which most prominent relativistic effects are accounted for. Partial wave contributions up to J=59/2 are included explicitly while ``topup'' procedures complete the sum to infinity. Several thousand energy points were used to fully incorporate the effect of resonances in the collisional cross sections when estimating the collisional rate parameters. This is particularly important at lower temperatures where the resonant contributions dominate. The present results are expected to be accurate to better than 20% for transitions among n=2 levels. Detailed tables of the present data are available in electronic form at the CDS via anonymous ftp to cdsarc.ustrasbg.fr (ftp 130.79.128.5) or via http://cdsweb.ustrasbg.fr/cgibin/qcat?J/A+1/372/1083
 Publication:

Astronomy and Astrophysics
 Pub Date:
 June 2001
 DOI:
 10.1051/00046361:20010562
 Bibcode:
 2001A&A...372.1083B
 Keywords:

 ATOMIC AND MOLECULAR DATA