TY - JOUR

T1 - R-matrix inner-shell electron-impact excitation of Fe15+ including auger-plus-radiation damping

AU - Liang, G.Y.

AU - Whiteford, A.D.

AU - Badnell, N.R.

PY - 2008/12

Y1 - 2008/12

N2 - We present results for the inner-shell electron-impact excitation of Fe15+ using the intermediate-coupling frame transformation R-matrix approach in which Auger-plus-radiation damping has been included. The target and close-coupling expansions are both taken to be the 134 levels belonging to the configurations 2s22p63l, 2s22p53s3l, 2s22p53p2 and 2s22p53p3d. The comparison of Maxwell-averaged 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 R-matrix calculations (Aggarwal and Keenan 2008 J. Phys. B: At. Mol. Opt. Phys. 41 015701) overestimate the effective collision strengths due to their omission of Auger-plus-radiation damping.

AB - We present results for the inner-shell electron-impact excitation of Fe15+ using the intermediate-coupling frame transformation R-matrix approach in which Auger-plus-radiation damping has been included. The target and close-coupling expansions are both taken to be the 134 levels belonging to the configurations 2s22p63l, 2s22p53s3l, 2s22p53p2 and 2s22p53p3d. The comparison of Maxwell-averaged 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 R-matrix calculations (Aggarwal and Keenan 2008 J. Phys. B: At. Mol. Opt. Phys. 41 015701) overestimate the effective collision strengths due to their omission of Auger-plus-radiation damping.

KW - R-matrix

KW - electron impact

KW - Fe15+

KW - auger-plus-radiation

KW - damping

UR - http://dx.doi.org/10.1088/0953-4075/41/23/235203

U2 - 10.1088/0953-4075/41/23/235203

DO - 10.1088/0953-4075/41/23/235203

M3 - Article

SN - 0953-4075

VL - 41

SP - 1

EP - 12

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

IS - 23

ER -