计算物理 ›› 1998, Vol. 15 ›› Issue (4): 451-456.

• 论文 • 上一篇    下一篇

实际射频阱中多极势分量的计算和消除

蔡永颜, Yan Min, 罗学立, 高克林, 朱熙文   

  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 430071
  • 收稿日期:1997-07-16 修回日期:1998-01-24 出版日期:1998-07-25 发布日期:1998-07-25
  • 作者简介:蔡永,男,31,助研,硕士,中科院武汉物理与数学所二室
  • 基金资助:
    国家自然科学基金资助项目(基金批准号:19674066和19734006)

CALCULATION AND ELIMINATION OF MULTIPOLE POTENTIAL COMPONENTS IN A PRACTICAL

Cai Yong, Yan Min, Luo Xueli, Gao Kelin, Zhu Xiwen   

  1. Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, The Chinese Academy of Sciences, 430071
  • Received:1997-07-16 Revised:1998-01-24 Online:1998-07-25 Published:1998-07-25

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,某些非线性因素可以部分抵消从而产生较为理想的四极势

关键词: 射频阱, 多极势

Abstract: 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.

Key words: RF Ion trap, Multipole potential

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