AVS 52nd International Symposium
    Plasma Science and Technology Tuesday Sessions
       Session PS-TuP

Paper PS-TuP25
Helicon Discharges with Permanent Magnets

Tuesday, November 1, 2005, 4:00 pm, Room Exhibit Hall C&D

Session: Plasma Science and Technology Poster Session
Presenter: H. Torreblanca, University of California, Los Angeles
Authors: H. Torreblanca, University of California, Los Angeles
F.F. Chen, University of California, Los Angeles
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Industrial helicon sources have been shown to produce higher plasma densities than unmagnetized ICPs but require the addition of a dc electromagnet and its power supply. This requirement can be obviated by using permanent magnets (PMs). However, injection is a problem, since the field lines of PMs normally do not allow the electrons to leave the source region. Using PMs, we have measured the plasma properties both inside the source and downstream in various helicon discharges, including the Big Blue Mode. To overcome the injection problem, we have tried various types of antennas and various ways to shape the magnetic and electric fields.