NDLI: Magnetohydrodynamic Simulation of a Coaxial High-Density Plasma Opening Switch

Content Provider	IEEE Xplore Digital Library
Author	Xiang Xu You-Nian Wang
Copyright Year	1973
Abstract	The plasma dynamics and the magnetic-field penetration in a coaxial plasma opening switch (POS) are studied self-consistently based on the two-dimensional magnetohydrodynamic (MHD) equation conjunction with the generalized Ohm's law. The energy transfers between the plasma and the magnetic field are considered during the penetration of the magnetic field, in which both the Ohmic heating and the heat transfer are included in the energy-balance equation. The profiles of magnetic field, plasma density, and plasma temperature are simulated with the initial plasma density n₀=10¹⁶ cm^-3. For the high-density plasma, it is shown that the convection effect dominates the magnetic-field penetration; the plasma near the cathode is rapidly compressed by the magnetic pressure, and the temperature of the plasma in the shock region increases noticeably because of the compression effect. Furthermore, the increase of temperature in the shock region enhances the magnetic-field penetration near the cathode. The energy analysis shows that more than half of the input energy is stored as magnetic-field energy, and a significant amount of the input energy goes into the plasma thermal energy. The scaling relation between the maximal conduction current and the initial plasma density is also studied, and the simulation results agree with the theoretical law and experimental data well
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	1529
Ending Page	1535
Page Count	7
File Size	541575
File Format	PDF
ISSN	00933813
Volume Number	34
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Plasma simulation Magnetohydrodynamics Coaxial components Magnetic switching Plasma temperature Plasma density Switches Magnetic fields Equations Heat transfer scaling relation Energy balance magnetohydrodynamic (MHD) simulation opening switch
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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