Reduction of Plasma Decay in a Curved Magnetic Field with an Inflection Point

抄録

This letter describes the open ended device with a non-planar magnetic axis of which the torsional angle can be changed easily. It is shown experimentally that the after glow plasma decays exponentially in a longitudinal magnetic field and this decay time increases markedly at an appropirate torsional angle. A non-planar system looks like better than a planar one for a decay time in a weakly ionized plasma.