Extraction of Volume Produced H^- or D^- Ions from a Sheet Plasma I

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概要

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• H^- ions with a current density of about 30mA/cm^2 (2.1mA in 3mmΦ) or D^- ions with about 8mA/cm^2 (0.56mA in 3mmΦ) near an energy of 2.5keV, is extracted from outside of a sheet plasma around a low pressure 7.7×10^<-4> Torr and a weak magnetic field 100 gauss. The sheet plasma (14cm width and 0.8cm thickness) produces a large uniform diffusion flux of plasma over a large area across the magnetic field, and includes electron beam components (∿50 eV) in it's center while the electron temperature outside of the sheet plasma is ranging from 2eV to 3eV. An effective extraction method for H^- or D^- ions is found while electron current is suppressed neglisibly. Thus, a development to large area D^- ion source is studied.

• 核融合科学研究所の論文

著者

• Uramoto Joshin

  Research Information center, Institute of Plasma Physics, Nagoya University

関連論文

• Long-Pulse Ion Source Using Filamentless LaB_6 Multi-Cathodes
• A Combination of Permanent Magnet and Magnetic Coil for A Large Diameter Ion Source
• A Disc LaB_6 Cathode for Plasma Production in Magnetic Field
• Comparison between Uramoto Type and Straight Filament Type Sheet Plasma as a Volume Produced H^- Ion Source (II)
• Simple Method of Sheet Plasma Production in Lower Pressure
• Extraction of Volume Produced H^- or D^- Ions from a Sheet Plasma I
• Extraction of Volume Produced H^- or D^- Ions from a Sheet Plasma II
• Comparison between Uramoto Type and Straight Filament Type Sheet Plasmas as a Volume Produced H^- Ion Source (I)
• An Ion Source Plasma starting from a cold La B_6 cathode I
• Electron Temperature Effects for An Ion Beam Source

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