Quantitative insights in to the fluid interactions downstream of an atmospheric pressure dielectric barrier plasma jet

摘要

1.Introduction Low-temperature atmospheric pressure plasma jets are dielectric barrier discharges generated in thin dielectric tubes. The gas flowing through the capillary, typically helium or argon, is ionized, and emerges into the ambient air creating a variety of reactive chemical species. The spatial separation between the region of plasma generation and reactive species creation makes the plasma jet configuration unique, facilitating a stable source of short-lived and long-lived reactive oxygen and nitrogen species (RONS) under ambient conditions (Figure 1). Understanding the complex interaction between the discharge and the background gas is the key to understanding the RONS chemistry arriving at a downstream sample.