中国物理B ›› 2000, Vol. 9 ›› Issue (6): 424-431.doi: 10.1088/1009-1963/9/6/005

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TRANSIENT LIFETIME SPECTRUM OF TWO CHARGED PARTICLES IN A PAUL TRAP

张广才1, 戴建华1, 张洪钧1, 沈京玲2   

  1. (1)Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; (2)Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; Department of Physics, Capital Normal University, Beijing 100037, China
  • 收稿日期:1999-11-12 修回日期:2000-02-17 出版日期:2000-06-15 发布日期:2005-06-12
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 19835020).

TRANSIENT LIFETIME SPECTRUM OF TWO CHARGED PARTICLES IN A PAUL TRAP

Shen Jing-ling (沈京玲)ab, Zhang Guang-cai (张广才)a, Dai Jian-hua (戴建华)a, Zhang Hong-juna   

  1. a Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; b Department of Physics, Capital Normal University, Beijing 100037, China
  • Received:1999-11-12 Revised:2000-02-17 Online:2000-06-15 Published:2005-06-12
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 19835020).

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摘要： The transient properties of laser-cooled two charged particles in a Paul trap are studied numerically. We find the existence of characteristic lifetime of an attractor, which is thought to be an important feature of the transient dynamics of the weakly dissipative system. The theoretical analysis shows that it is caused by pseudo-periodic orbit which is the residual sign of periodic orbit of the focus-saddle bifurcation. Study of dissipative coupled standard maps shows that this is a general conclusion for weakly dissipative system.

Abstract: The transient properties of laser-cooled two charged particles in a Paul trap are studied numerically. We find the existence of characteristic lifetime of an attractor, which is thought to be an important feature of the transient dynamics of the weakly dissipative system. The theoretical analysis shows that it is caused by pseudo-periodic orbit which is the residual sign of periodic orbit of the focus-saddle bifurcation. Study of dissipative coupled standard maps shows that this is a general conclusion for weakly dissipative system.

中图分类号:  (Oscillator strengths, lifetimes, transition moments)

  • 32.70.Cs
37.10.De (Atom cooling methods)