Numerical study of active species generation and delivery to a dielectric surface from a helium atmospheric-pressure plasma jet

摘要

Atmospheric plasma jets are attracting attentions for being used as a source of active chemical species such as OH, O and O at a low gas temperature. Generation of active species and their delivery to surfaces is of an interest for biomedical and surface modification applications. This work investigates by means of a 2D self-consistent time dependent fluid model, the performance of DC-pulsed driven helium atmospheric plasma jet as source of active species to a dielectric surface. The investigation is based on the fluxes and the densities of active species at a dielectric's surface including OH, O and O. The effects of different parameter such as the gas flow rate, water impurities levels and long time scale chemical reactions on the generation and delivery of active species is presented.