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Author Zhou, Qianhong ♦ Dong, Zhiwei ♦ Yang, Wei
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ ACCELERATION ♦ DISTANCE ♦ FLUIDS ♦ PLASMA ♦ PLASMA SIMULATION ♦ SHOCK WAVES ♦ SIGNALS ♦ WAVE PROPAGATION
Abstract Many researchers have investigated shock propagation in weakly ionized plasmas and observed the following anomalous effects: shock acceleration, shock recovery, shock weakening, shock spreading, and splitting. It was generally accepted that the thermal effect can explain most of the experimental results. However, little attention was paid to the shock recovery. In this paper, the shock wave propagation in weakly ionized plasmas is studied by fluid simulation. It is found that the shock acceleration, weakening, and splitting appear after it enters the plasma (thermal) region. The shock splits into two parts right after it leaves the thermal region. The distance between the splitted shocks keeps decreasing until they recover to one. This paper can explain a whole set of features of the shock wave propagation in weakly ionized plasmas. It is also found that both the shock curvature and the splitting present the same photoacoustic deflection (PAD) signals, so they cannot be distinguished by the PAD experiments.
ISSN 1070664X
Educational Use Research
Learning Resource Type Article
Publisher Date 2016-07-15
Publisher Place United States
Journal Physics of Plasmas
Volume Number 23
Issue Number 7


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