Microwave Plasma Systems at Atmospheric and Higher Pressures

Contrary to the well‐known and established thermal plasmas, the cold plasmas at the energy non‐equilibrium use rather low‐power generators with special electrode‐launching or power‐launching‐ arrangements. A few reports and extensive reviews describe different principles and applications of the cold atmospheric plasma (CAP), with numerous related references, which reflect an enormous interest in this technology. This chapter describes the microwave atmospheric plasma in liquids. The principle of the hybrid atmospheric plasma source was tested on a novel construction of a brush plasma so as to test the feasibility of an atmospheric plasma system for large‐area processing. The pulsed microwave plasma was tested in treatments of the particulate matter formed in the diesel exhaust. Certain electrode arrangements and reactors for the cold atmospheric plasma can be used for plasma generation in liquids and vapors. An interesting part of CAP applications is the interaction with the combustion flames.