McKay, Kirsty Iza, Felipe Kong, Michael G. Liu, Ding-Xin Rong, Ming-Zhe Double-layer structures in low-temperature atmospheric-pressure electronegative RF microplasmas: separation of electrons and anions Stratification of negatively charged species in electronegative discharges is a well-known phenomenon that can lead to various double-layer structures. Here, we report on the separation of electrons and anions in atmospheric-pressure electronegative microdischarges. In these discharges, electrons oscillate between the electrodes, moving across and beyond an electronegative core. As a result of this motion, positively charged regions form between the oscillating electron ensemble and the central electronegative discharge. untagged;Mechanical Engineering not elsewhere classified 2014-11-28
    https://repository.lboro.ac.uk/articles/journal_contribution/Double-layer_structures_in_low-temperature_atmospheric-pressure_electronegative_RF_microplasmas_separation_of_electrons_and_anions/9564290