Experimental Investigation on Atmospheric Pressure Plasma Jet under Locally Divergent Magnet Field

Regulating the parameters of atmospheric pressure plasma jet (APPJ) is meaningful for industrial applications. Since a typical functional fluid in magnetic field, it possible to control discharge characteristics via Lorentz force. In this study, effects locally divergent field on generation and propagation APPJ were examined experimentally. The experiments used coplanar dielectric barrier (CDBD) device driven by 30 kHz AC high-voltage source generate helium APPJ. A 250 mT (maximum) was applied coupled with electric noticeable enhancement observed. results showed that changed motion state electrons promoted collision ionization, leading 40% improvement length (0.6 cm) 23% increase intensity line O (777.2 nm). addition, spatiotemporal evolution flow diagnosed ICCD schlieren technique. combination fields may effectively optimize practical