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Author Gou, J. ♦ Xian, Y. ♦ Lu, X.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ CROSS SECTIONS ♦ ELECTRIC POTENTIAL ♦ ELECTRON DENSITY ♦ ELECTRONS ♦ EQUILIBRIUM ♦ LENGTH ♦ NON-EQUILIBRIUM PLASMA ♦ PLASMA DENSITY ♦ PLUMES ♦ QUARTZ ♦ TEMPERATURE RANGE 0065-0273 K ♦ THERMONUCLEAR IGNITION ♦ TUBES
Abstract A low-temperature He microplasma plume generated in a micro quartz tube with the inner diameter decreasing from 245 μm to 6 μm is reported. The microplasma plume has a length of around 1.5 cm and reaches the position where the tube diameter is 10 μm. Though the inner diameter of the tube is in sub-millimeter, the cross section of the tube is not fully filled with the plasma only until the tube inner diameter is down to 30 μm. The electron density estimated from H{sub α} stark broadening increases as the inner diameter of the tube decreases. The ignition voltage increases from 11 kV to 40 kV as the diameter of the inner quartz tube decreases from 245 μm to 10 μm. Further analysis shows that, in order to ignite a non-equilibrium plasma plume in 1 μm diameter tube, the applied voltage of about 65 kV is needed and the plasma density could be as high as ∼10{sup 18 }cm{sup −3}.
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-05-15
Publisher Place United States
Journal Physics of Plasmas
Volume Number 23
Issue Number 5


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