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Accession number;99A0938070
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| Title;Dynamic Evolution of Plasma Structures Due to Local Production of Huge Negative Ions. |
| Author;
OHARA WATARU
(Tohoku Univ.)
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Journal Title;Record of Electrical and Communication Engineering Conversazione, Tohoku University
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Journal Code:F0511A
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ISSN:0385-7719
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VOL.68;NO.1;PAGE.20-23(1999)
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| Figure&Table&Reference;FIG.5, REF.5 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;Dynamic structures formed due to local production of huge negative ions in a plasma are investigated by means of a Q-machine experiment and a one-dimensional electrostatic particle simulation. The plasma becomes unstable for a large rate of negative ion production, being accompanied by a double-layer formation generating solitary pulses with negative potential. The solitary pulses play a role in making negative ions ejected rapidly from the system. Poduced negative ions are found to strongly diffuse across magnetic field lines and a drift wave instability driven by the negative ions is simultaneously observed. (author abst.) |
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