Open AccessOn the effect of magnetic field gradient on the discharge characteristics of Hall thrusters
Author(s) -
E Peng,
Ping Duan,
Binhao Jiang,
Hui Liu,
Liqiu Wei,
Xu Dian-Guo
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.7182
Subject(s) - magnetic field , gyroradius , physics , thermal hall effect , magnetic pressure , hall effect , magnetic energy , field (mathematics) , potential gradient , field strength , radius , condensed matter physics , computational physics , atomic physics , mechanics , magnetization , mathematics , computer security , quantum mechanics , computer science , pure mathematics
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.