Electron-impact single ionization of Mg and Al+

J. A. Ludlow, C. P. Ballance, S. D. Loch, M. S. Pindzola, D. C. Griffin

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11 Citations (Scopus)


Theory and experiment are compared for the electron-impact single ionization of Mg and Al+. Nonpertur- bative R matrix with pseudostates RMPS and time-dependent close-coupling TDCC calculations have been carried out that exhibit large reductions from perturbative distorted-wave results of 38% for Mg and 20% for Al+. Experimental single-ionization data available for Mg and Al+ are in reasonable accord with distorted-wave data and lie substantially above the new theoretical results. Rate coefficients, necessary for the collisional- radiative modeling of Mg and Al plasmas were generated from the RMPS ionization cross sections. In the collisional-ionization region near the ionization threshold, the resulting rates were found to be up to two times lower for Mg and three times lower for Al+ than the rates generated from experimental data.
Original languageEnglish
JournalPhysical Review A (Atomic, Molecular, and Optical Physics)
Issue number3
Publication statusPublished - 2009


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