Study on plasma sheath and plasma transport properties in the azimuthator

Zhenyu WANG (王振宇); Binhao JIANG (江滨浩); N A STROKIN; A N STUPIN

doi:10.1088/2058-6272/aaa754

Plasma Science and Technology > 2018 > 20(4): 45501-045501. > DOI: 10.1088/2058-6272/aaa754

Zhenyu WANG (王振宇), Binhao JIANG (江滨浩), N A STROKIN, A N STUPIN. Study on plasma sheath and plasma transport properties in the azimuthator[J]. Plasma Science and Technology, 2018, 20(4): 45501-045501. DOI: 10.1088/2058-6272/aaa754

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Study on plasma sheath and plasma transport properties in the azimuthator

1 Department of Electrical Engineering, Harbin Institute of Technology, Harbin 15000l, People’s Republic of China 2 Irkutsk National Research Technical University, Irkutsk 664074, Russia

Funds: This work was supported by National Natural Science Foundation of China (Grant No. 51177020).

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Received Date: October 19, 2017

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Abstract

Abstract

A physical model of transport in an azimuthator channel with the sheath effect resulting from the interaction between the plasma and insulation wall is established in this paper. Particle in cell simulation is carried out by the model and results show that, besides the transport due to classical and Bohm diffusions, the sheath effect can significantly influences the transport in the channel. As a result, the ion density is larger than the electron density at the exit of azimuthator, and the non-neutral plasma jet is divergent, which is unfavorable for mass separation. Then, in order to improve performance of the azimuthator, a cathode is designed to emit electrons. Experiment results have demonstrated that the auxiliary cathode can obviously compensate the space charge in the plasma.
- azimuthator,
- plasma transport,
- plasma sheath,
- PIC simulation

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References (17)

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