Session L2: Poster Session II: 4:00 pm - 6:00 pm
4:00 PM–4:00 PM, Thursday, May 29, 2008
HUB-Robeson Center Room: Alumni Hall
Abstract ID: BAPS.2008.DAMOP.L2.60
Abstract: L2.00060 : Effective collision strengths for the electron impact excitation of Mg\,{\sc v}
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Abstract 
Authors:
C.E. Hudson
(School of Maths and Physics, Queen's University Belfast, UK)
C.A. Ramsbottom
(School of Maths and Physics, Queen's University Belfast, UK)
P.H. Norrington
(School of Maths and Physics, Queen's University Belfast, UK)
M.P. Scott
(School of Maths and Physics, Queen's University Belfast, UK)
Electron impact excitation collision strengths for fine structure transitions of Mg\,{\sc v} have been determined by a Breit-Pauli $R$-matrix calculation. The target states are represented by configuration interaction wavefunctions and consist of the 19 lowest $LS$ states, having configurations 2s$^2$2p$^4$, 2s2p$^5$, 2p$^6$, 2s$^2$2p$^3$3s and 2s$^2$2p$^3$3p. These target states give rise to 37 fine structure levels and 666 possible transitions. The effective collision strengths are calculated by averaging the electron collision strengths over a Maxwellian distribution of electron velocities. Effective collision strengths for transitions between the fine structure levels are given for electron temperatures in the range $\log_{10} T_{\rm e} ({\rm K}) = 3.0 - 7.0$. Results are compared with the previous $R$-matrix calculation of Butler \& Zeippen (AASS, 1994) and the recent Distorted Wave evaluations of Bhatia, Landi \& Eissner (ADNDT, 2006).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2008.DAMOP.L2.60