托卡马克电场电子注入的漂移电子束研究
RESEARCHES ON DRIFT ELECTRON BEAM IN ELECTRON INJECTION BY ELECTRIC DRIFT ON TOKAMAK
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摘要: 研究了漂移电子束中电子的运动规律, 得到了电子在外加电场、纵磁场和电子束自场中的运动轨迹和漂移速度表达式, 并就它们的成束条件、成束形状和电压要求以及束的稳定性条件进行了比较和讨论, 认为阴极垂直于纵磁场放置更好一些。Abstract: The motion regularity of the electron in frift electron beam were studied. The expressions of the motion trajectory and the drift velocity of electron were obtained in added externally electric field, toroidal magnetic field and selffield. For two schemes of setting cathode, forming conditions, shapes, steady conditions, and required voltages of drift electron beam were discussed and compared, and it was better to set the cathode vertically to toroidal magnetic field.
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Key words:
- drift electron beam /
- electric drift injection /
- tokamak
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