In-Tube Shock Wave Driven by Atmospheric Millimeter-Wave Plasma
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概要
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A shock wave in a tube supported by atmospheric millimeter-wave plasma is discussed. After atmospheric breakdown, the shock wave supported by the millimeter wave propagates at a constant velocity in the tube. In this study, a driving model of the millimeter-wave shock wave is proposed. The model consists of a normal shock wave supported by a propagating heat-supply area in which an ionization front is located. The flow properties predicted by the model show good agreement with the measured properties of the shock wave generated in the tube using a 170 GHz millimeter wave beam. The shock propagation velocity $U_{\text{shock}}$ is identical to the propagation velocity of the ionization front $U_{\text{ioniz}}$ when $U_{\text{ioniz}}$ is supersonic. Then the pressure increment at the tube end is independent of the power density.
- 2009-11-25
著者
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Komurasaki Kimiya
Department Of Advanced Energy The University Of Tokyo
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Oda Yasuhisa
Plasma Heating Research Group, Naka Fusion Research Institute, Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
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Kajiwara Ken
Plasma Heating Research Group, Naka Fusion Research Institute, Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
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Takahashi Koji
Plasma Heating Research Group, Naka Fusion Research Institute, Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
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Kasugai Atsushi
Plasma Heating Research Group, Naka Fusion Research Institute, Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
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Sakamoto Keishi
Plasma Heating Research Group, Naka Fusion Research Institute, Japan Atomic Energy Agency, Naka, Ibaraki 311-0193, Japan
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Komurasaki Kimiya
Department of Advanced Energy, Graduate School of Frontier Science, The University of Tokyo, Kashiwa, Chiba 277-8561, Japan
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