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.
|Journal||Physical Review A (Atomic, Molecular, and Optical Physics)|
|Publication status||Published - 2009|
Ludlow, J. A., Ballance, C. P., Loch, S. D., Pindzola, M. S., & Griffin, D. C. (2009). Electron-impact single ionization of Mg and Al+. Physical Review A (Atomic, Molecular, and Optical Physics), 79(3). https://doi.org/10.1103/PhysRevA.79.032715