| A Confined Chaotic Motion of a Kicked Particle |
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| 作者姓名： | 王旭明 赵金刚 陈贺胜 姜玉梅 毛剑珊 何大韧 |
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| 作者单位： | 王旭明,姜玉梅,毛剑珊,何大韧(Institute of plasma physics,the Chinese Academy of Sciences,);赵金刚,陈贺胜(The Complexity Science Center,Yangzhou University,)
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| 基金项目： | the National Natural Foundation of China under Grant No. 19975039. |
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| 摘 要： | 1. IntroductionWe shall consider a kicked classic particle, which isan ion driven by an electromagnetic field.' Its motionis bounded on a cycle. A basic question is how onecan obtain a confined chaotic motion of it. Here, the"confined" means that the motion is bounded insidea part Of the phase space. It may be difficult to find adirect correspondence with this question in practicalsituations, such as in the confinement of hot plasma.However, the discussion may present helpful ideas fOrsolvin…
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A Confined Chaotic Motion of a Kicked Particle |
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| Abstract: | Different types of models for describing the motion of a kicked ion were suggested and studied. It is shown that certain kinds of jumping behavior of the exerting electromagnetic field can lead to a type of noninvertible property, which changes this conservative system into a “quasi-dissipative” one. The quasi-dissipative behaviors allow the particle to move along a confined chaotic ”quasi-attractor” in many regions of the parameter space. If the exerting electromagnetic field is discontinuous but the system is still invertible, it will take an unbounded chaotic diffusion with similar parameter values. We hope that this discovery could provide a helpful idea for confining the plasma. |
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