We present numerical kinetic modeling of generation and evolution of the plasma produced as a result of resonance enhanced multiphoton ionization (REMPI) in Argon gas. The particle-in-cell/Monte Carlo collision (PIC/MCC) simulations capture non-equilibrium effects in REMPI plasma expansion by considering the major collisional processes at the microscopic level: elastic scattering, electron impact ionization, ion charge exchange, and recombination and quenching for metastable excited atoms. The conditions in one-dimensional (1D) and two-dimensional (2D) formulations correspond to known experiments in Argon at a pressure of 5 Torr. The 1D PIC/MCC calculations are compared with the published results of local drift-diffusion model, obtained for the same conditions. It is shown that the PIC/MCC and diffusion-drift models are in qualitative and in reasonable quantitative agreement during the ambipolar expansion stage, whereas significant non-equilibrium exists during the first few 10 s of nanoseconds. 2D effects are important in the REMPI plasma expansion. The 2D PIC/MCC calculations produce significantly lower peak electron densities as compared to 1D and show a better agreement with experimentally measured microwave radiation scattering


Copyright (2013) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in (S. Tholeti*, M. Schneider, A. Alexeenko, “Kinetic Modeling of Evolution of 3+1:REMPI Plasma in Argon at Low Pressures”, Physics of Plasmas, Vol. 21, 063507, 9 pages, 2014.) and may be found at (http://dx.doi.org/10.1063/1.4882261). The following article has been submitted to/accepted by [Physics of Plasmas]. After it is published, it will be found at (http://dx.doi.org/10.1063/1.4882261). Copyright (2013) S. Tholeti*, M. Schneider, A. Alexeenko. This article is distributed under a Creative Commons Attribution 3.0 Unported License.

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