Rmatrix innershell electronimpact excitation of Fe^{15+} including Augerplusradiation damping
Abstract
We present results for the innershell electronimpact excitation of Fe^{15+} using the intermediatecoupling frame transformation Rmatrix approach in which Augerplusradiation damping has been included. The target and closecoupling expansions are both taken to be the 134 levels belonging to the configurations 2s^{2}2p^{6}3l, 2s^{2}2p^{5}3s3l, 2s^{2}2p^{5}3p^{2} and 2s^{2}2p^{5}3p3d. The comparison of Maxwellaveraged effective collision strengths with and without damping shows that the damping reduction is about 30 40% for many transitions at low temperatures, but up to 80% for a few transitions. As a consequence, the results of previous Dirac Rmatrix calculations (Aggarwal and Keenan 2008 J. Phys. B: At. Mol. Opt. Phys. 41 015701) overestimate the effective collision strengths due to their omission of Augerplusradiation damping.
 Publication:

Journal of Physics B Atomic Molecular Physics
 Pub Date:
 December 2008
 DOI:
 10.1088/09534075/41/23/235203
 arXiv:
 arXiv:0811.0750
 Bibcode:
 2008JPhB...41w5203Y
 Keywords:

 Astrophysics
 EPrint:
 21 pages, 7 figures, 4 tables. accepted by J. Phys. B