Low-frequency oscillations in Hall thrusters

Author: Li-Qiu Wei   Liang Han   Da-Ren Yu   Ning Guo  

Publisher: IOP Publishing

E-ISSN: 1741-4199|24|5|55201-55210

ISSN: 1674-1056

Source: Chinese Physics B, Vol.24, Iss.5, 2015-05, pp. : 55201-55210

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Abstract

In this paper, we summarize the research development of low-frequency oscillations in the last few decades. The findings of physical mechanism, characteristics and stabilizing methods of low-frequency oscillations are discussed. It shows that it is unreasonable and incomplete to model an ionization region separately to analyze the physical mechanism of low-frequency oscillations. Electro-dynamics as well as the formation conditions of ionization distribution play an important role in characteristics and stabilizing of low-frequency oscillations. Understanding the physical mechanism and characteristics of low- frequency oscillations thoroughly and developing a feasible method stabilizing this instability are still important research subjects.