| 在环型自由电子激光器中电子运动的混沌特性 |
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| 引用本文： | 尹元昭, 阴和俊. 在环型自由电子激光器中电子运动的混沌特性[J]. 电子与信息学报, 1996, 18(1): 31-35. |
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| 作者姓名： | 尹元昭 阴和俊 |
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| 作者单位： | 中国科学院电子学研究所，中国科学院电子学研究所 北京 100080，北京 100080 |
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| 摘 要： | 本文分析了相对论性电子在环型摆动器磁场,轴向磁场和由非中性电子束产生的平衡自电场和自磁场中的运动。通过数值计算画出Poincare截面映射图,表明当自场足够强时,这种运动变成混沌的。虽然现实的环型摆动器场和自场一样使电子运动方程成为不可积的,但自场使运动产生混沌的作用要比摆动器场强。轴向磁场有抑制混沌发生的作用。
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| 关 键 词： | 环型自由电子激光器 自场 混沌 |
| 收稿时间： | 1993-12-22 |
| 修稿时间： | 1994-03-04 |
CHAOTIC ELECTRON TRAJECTORIES IN A CIRCULAR FREE ELECTRON LASER |
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| Yin Yuanzhao, Yin Hejun. CHAOTIC ELECTRON TRAJECTORIES IN A CIRCULAR FREE ELECTRON LASER[J]. Journal of Electronics & Information Technology, 1996, 18(1): 31-35. |
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| Authors: | Yin Yuanzhao Yin Hejun |
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| Affiliation: | Institute of Electronics, Academia Sinica, Beijing 100080 |
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| Abstract: | The motion of a relativistic electron is analyzed in the field configuration consisting of a circular wiggler magnetic field, an axial magnetic field, and the equilibrium self-electric and self-magnetic fields produced by the non-neutral electron beam. By generating Poincare surface-of-section maps, it is shown that when the self-fields are strong enough, the electron motions become chaotic. Although the realistic circular wiggler field makes the equations of electron motion nonintegrable as the self-fields do, the effect of self-fields to cause the chaoticity is stronger than the wiggler field. The axial magnetic field can suppress the occurrence of chaoticity. |
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| Keywords: | Circular free electron laser Self-fields Chaos |
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