摘要
带状电子注在均匀磁场作用下传输时,很容易形成Diocotron不稳定性[1],导致电子注在传输过程中产生逐渐的崩溃。文章采用交错排列的磁堆形成的PCM磁场聚焦半无限带状电子注,分析了PCM磁场聚焦半无限带状注的作用机理,得出半无限带状电子注在PCM磁场作用下的包络方程(Matthieu方程)。结合理论分析,使用三维粒子模拟程序模拟了PCM磁场对半无限带状电子注的聚焦,详细研究了PCM磁场的部分参数对电子注传输的影响,并对模拟结果进行了分析。
Transporting in uniform magnetic fields, sheet electron beam comes into being diocotron instability, which could lead to collapse of beam propagation. In this paper, PCM field is used to focus semiinfinite sheet electron beam, in which the single-particle equation was analyzed, and the result shows PCM field can restrain the diocotron instability. Using 3D PIC program, formation of diocotron instability is analyzed, then PCM field focusing sheet electron beam is simulated. In addition, the influence of PCM field＇s magnitude and period on the diocotron instability is investigated.
出处
《空间电子技术》
2009年第1期60-64,共5页
Space Electronic Technology
基金
国家自然科学基金项目(60601007
60532010)
电子科技大学青年基金重点项目(JX05018)
