Title :
Starlike Structures in Discharges With a Magnetic X-Point
Author :
Celik, Yusuf ; Tsankov, Tsanko ; Czarnetzki, Uwe
Author_Institution :
Inst. for Exp. Phys. V, Ruhr Univ. Bochum, Bochum, Germany
Abstract :
A radio-frequency low-pressure ICP discharge superimposed by a static magnetic field with an X-point configuration exhibits peculiar starlike structures in the total light emission. An enhanced emission at particular azimuthal angles is observed if the axial position of the magnetic null-point plane lies within the flange ports. The rays appear at angles at which the ten flange ports are located, suggesting an azimuthally inhomogeneous electron energy distribution.
Keywords :
high-frequency discharges; plasma magnetohydrodynamics; plasma pressure; azimuthal angle; azimuthally inhomogeneous electron energy distribution; discharge; light emission; magnetic X-point; magnetic null-point plane; radio-frequency low-pressure ICP discharge; starlike structure; Discharges; Magnetic resonance imaging; Magnetomechanical effects; Plasma temperature; Radio frequency; Temperature sensors; Plasma confinement; plasma sources; plasma temperature; radio frequency;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2011.2158662
