摘要
本文对四极磁透镜的磁场分布和电子的输运问题进行了研究和计算。文中阐述了四极磁透镜边缘场的三种处理方法,用这三种方法计算了透镜的输运矩阵。相互比较表明,四极磁透镜的边缘场采用传统的直角边近似就可以很好地解决问题。
Field properties of magnetic quadrupole lenses and electron beam transport are studied in this paper. To calculate the transfer matrix in the fringe region of a quadrupole lens, three kinds of methods are used. According to the calculated results, it is shown that the result of the hard-edged model is in good agreement with that of numerical calculation.
出处
《强激光与粒子束》
EI
CAS
CSCD
1991年第4期535-542,共8页
High Power Laser and Particle Beams
关键词
四极磁透镜
边缘场
聚焦
束流
magnetic quadrupole lens, transfer matrix, focus.
