Charge decay in the spatial afterglow of plasmas and its impact on diffusion regimes.

ABSTRACT: The spatial afterglow is a region at the boundary of a non-equilibrium plasma where charged species relax into ambient equilibrium. In many applications, the spatial afterglow is the part of the plasma that interacts with surfaces, such as suspended particles or a material substrate. However, compared to the bulk plasma, there has been little effort devoted to studying the properties of the spatial afterglow, and a fundamental analysis has not yet been developed. Here, we apply double Langmuir probe measurements and develop an advection-diffusion-recombination model to provide a detailed description of charged species in the spatial afterglow over a wide range of pressures, temperatures, plasma dimensions, and flow rates. We find that the density of charged species in the spatial afterglow

SUBMITTER: Abuyazid NH 

PROVIDER: S-EPMC10622414 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature