Evolution of magnetically rotating arc into large area arc plasma*
Wang Chenga), Li Wan-Wana), Zhang Xiao-Ninga), Zha Junb), Xia Wei-Donga)†
       
Typical images (a), and radiation intensity distributions along the circles (ϕ50 mm) and the radial line (b), of arc plasmas under different inlet gas flows, I = 350 A, B = 0.2 T, 1-μs shutter, 5000 fps, the outer white line in panel (a) represents the plasma chamber.