实际射频阱中多极势分量的计算和消除  

CALCULATION AND ELIMINATION OF MULTIPOLE POTENTIAL COMPONENTS IN A PRACTICAL

作　　者：蔡永[1] 罗学立[1] 高克林[1] 朱熙文[1] 

机构地区：[1]中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室

出　　处：《计算物理》1998年第4期69-74,共6页Chinese Journal of Computational Physics

基　　金：国家自然科学基金

摘　　要：采用边界元方法，计算了当实际射频阱出现帽极开孔、环极开环带以及轴向存在装配误差时阱内电势的多极分量，并给出其随孔径大小变化的规律。结果表明在一定条件下。Multipole components of potential field are calculated by using a boundary element method in an RF ion trap, when there exist assembling imperfections and axial holes in the endcaps and a bandcut on the equatorial surface of the ring electrode. The variation of multipole components versus the dimensions of holes and bandcut are analyzed in detail. The calculated results indicate that when specific conditions are satisfied, some nonlinear effects can be compensated partially each other and a nearly ideal quadrupole potential can be obtained.

关 键 词：射频阱 多极势 

分 类 号：O56[理学—原子与分子物理]