Dielectronic recombination of Mg+
- 14 August 1985
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 18 (15) , 3219-3228
- https://doi.org/10.1088/0022-3700/18/15/027
Abstract
Cross sections for the dielectronic recombination (DER) of electrons with Mg+(3s) are calculated for electron energies just below the 3s to 3p excitation threshold. Fine structure is explicitly treated by using pair coupling to define the states Mg(3p(Ji); nl), and the autoionisation rates of these states are obtained by extrapolating electron-ion scattering calculations downward across the ionisation threshold using quantum defect theory. The physical effect of fine structure is significant; a manifold of autoionising states split by the spin-orbit interaction makes a greater contribution to the cross section than the same number of degenerate states. The present results, averaged over the experimental conditions of Belic et al. (1983), have a maximum value of 4.2*10-18 cm2.Keywords
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