Characteristics of helium DC plasma jets at atmospheric pressure with multiple cathodes
Wang Cheng1, †, Zhang Zelong1, Cui Haichao1, Xia Weiluo2, Xia Weidong1
       

(color online) Schematic diagrams of the plasma torch with multiple cathodes. 1: Anode, 2: insulation piece, 3: cathode, 4: chamber, 5: glass window.