Penning阱中离子运动的分析  

Analysis on ion movement in Penning ion trap

作　　者：刘名扬[1] 任晓斌[2] 张民[1] 

机构地区：[1]装甲兵工程学院基础部,北京100072 [2]北京师范大学物理系,北京100875

出　　处：《物理实验》2007年第9期38-39,41,共3页Physics Experimentation

基　　金：军队科研资助项目

摘　　要：根据Penning离子阱结构及电磁场分布特点,列出阱内离子运动方程并进行求解,对其中沿z轴运动和在xy平面上的运动进行详细分析,最后得到比荷为m/q的离子在Penning阱内的运动为沿磁场方向的简谐振动、绕磁感线旋转的回旋运动和垂直于z轴及径向绕z轴的漂移运动的叠加.Based on the structure of Penning ion trap and the distributing characteristic of electro- magnetic field, ion motion equation is written out and resolved. The motions along z-axis and on the a-y plane are analyzed in detail. Then it is found that in penning ion trap the ion with charge mass ratio m/q does resultant motion composed by simple harmonic vibration along magnetic field, gyro motion around magnetic induction line and floating motion perpendicular to the z-axis and around z-axis.

关 键 词：PENNING阱 简谐振动 回旋运动 漂移运动 

分 类 号：O562.2[理学—原子与分子物理]