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Chin. Phys. B, 2014, Vol. 23(10): 105202    DOI: 10.1088/1674-1056/23/10/105202
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES Prev   Next  

A radial non-uniform helicon equilibrium discharge model

Cheng Yu-Guo, Cheng Mou-Sen, Wang Mo-Ge, Li Xiao-Kang
College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
Abstract  Helicon discharges have attracted great attention in the electric propulsion community in recent years. To acquire the equilibrium properties, a self-consistent model is developed, which combines the helicon/Trivelpiece-Gould (TG) waves-plasma interaction mechanism and the plasma flow theory under the confinement of the magnetic field. The calculations reproduce the central peak density phenomenon observed in the experiments. The results show that when operating in the wave coupling mode, high magnetic field strength B0 results in the deviation of the central density versus B0 from the linear relationship, while the density rise becomes flatter as the radiofrequency (rf) input power Prf grows, and the electron temperature Te radial profile is mainly determined by the characteristic of the rf energy deposition. The model could provide suggestions in choosing the B0 and Prf for medium power helicon thrusters.
Keywords:  helicon discharges      magnetic field      radial properties      thruster     
Received:  30 January 2014      Published:  15 October 2014
PACS:  52.75.Di (Ion and plasma propulsion)  
  52.50.Qt (Plasma heating by radio-frequency fields; ICR, ICP, helicons)  
  02.60.Cb (Numerical simulation; solution of equations)  
  88.85.J- (Vehicle energy storage)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11305265).
Corresponding Authors:  Wang Mo-Ge     E-mail:  tlothf@126.com
About author:  52.75.Di; 52.50.Qt; 02.60.Cb; 88.85.J-

Cite this article: 

Cheng Yu-Guo, Cheng Mou-Sen, Wang Mo-Ge, Li Xiao-Kang A radial non-uniform helicon equilibrium discharge model 2014 Chin. Phys. B 23 105202

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