A radial non-uniform helicon equilibrium discharge model

doi:10.1088/1674-1056/23/10/105202

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 P_rf grows, and the electron temperature T_e radial profile is mainly determined by the characteristic of the rf energy deposition. The model could provide suggestions in choosing the B₀ and P_rf for medium power helicon thrusters.

Keywords: helicon discharges magnetic field radial properties thruster

Received: 30 January 2014
Revised: 28 March 2014
Accepted manuscript online:

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 (成玉国), Cheng Mou-Sen (程谋森), Wang Mo-Ge (王墨戈), Li Xiao-Kang (李小康) A radial non-uniform helicon equilibrium discharge model 2014 Chin. Phys. B 23 105202


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