Nonmonotonic spatial profiles of excitation rates in bounded plasmas caused by effects of EDF nonlocality

It is shown that the impact of the electron distribution function (EDF) nonlocality on the spatial profiles of excitation rates is important up to high gas pressures pR<100 cmtorr. A paradoxical effect related to the nonlocal character of the EDF is revealed: the peaks of the profiles of the excitation rates shift from the discharge axis toward the periphery as the pressure increases. This effect cannot be understood from the hydrodynamic point-of-view but is instead related to the nonlocal character of the EDF