Effect of Orifice Diameter on the Performance of a Miniature Microwave Neutralizer

被引：1

作者：

Dey, Indranuj ^{[1
,2
]}

Yamamoto, Naoji ^{[2
]}

Nakashima, Hideki ^{[2
]}

机构：

[1] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[2] Kyushu Univ, Dept Adv Energy Engn Sci, Kasuga, Fukuoka 8168580, Japan

来源：

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES | 2017年 / 60卷 / 04期

关键词：

Electric Propulsion; Microwave; Plasma; Neutralizer; Ion Thruster; ECR;

D O I：

10.2322/tjsass.60.259

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

A miniature electron cyclotron resonance (ECR) plasma source is operated as a neutralizer, and the effect of orifice diameter on the output is studied. The output is quite promising for accompanying 1-mN-class ion thrusters with an output ion-beam current of 12–15mA. The optimum orifice diameter is independent of neutral mass flow rate, implying that factors other than electron-neutral collisions are dominant. The variation in orifice diameter is expected to alter the microwave field boundary conditions inside discharge chamber (DC), and also influence the dc-electric field existing between the orifice and collector. The convolution of these two factors would be primarily responsible for the optimum orifice diameter.

引用

页码：259 / 262

页数：4

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