%0 Journal Article
%T On the effect of magnetic field gradient on the discharge characteristics of Hall thrusters<br>磁场梯度对Hall推力器放电特性影响的实验研究
%A E Peng
%A Duan Ping
%A Jiang Bin-Hao
%A Liu Hui
%A Wei Li-Qiu
%A Xu Dian-Guo
%A <br>鄂鹏
%A 段萍
%A 江滨浩
%A 刘辉
%A 魏立秋
%A 徐殿国
%J 物理学报
%D 2010
%I 
%X An experiment was performed to investigate how the magnetic field gradient in strong field zone affects the discharge processes of Hall thrusters, such as the ionization and acceleration of propellants, for further research on optimal design theory of magnetic field in discharge channels of Hall thrusters. The results show that magnetic field strength has little effect on the ionization of propellants within the designed range of magnetic field gradient, but has significant influence on the acceleration of ions.With the increase of magnetic field gradient, the ion-beam energy distribution tends to be concentrated, and the thrust efficiency tends to rise. Finally, further increase of magnetic field gradient may lead to a series of physical problems,among whith such as the finite Larmor radius effect, the changes in the law of electronic conduction mechanism, and the magnetic field gradient drift are analyzed.
%K Hall thruster
%K magnetic field gradient
%K discharge characteristics<br>Hall推力器
%K 磁场梯度
%K 放电特性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=CF6CFBAFC167DCC1F76085A363D19EBD&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=F3090AE9B60B7ED1&sid=453623609FFB4C16&eid=5C6C1D24D6260195&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=19