| 太阳高能电子束通过空间振荡轴向场产生的电磁不稳定性 |
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| 引用本文： | 汪学毅,衣嵘.太阳高能电子束通过空间振荡轴向场产生的电磁不稳定性[J].空间科学学报,1997,17(2):118-123. |
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| 作者姓名： | 汪学毅 衣嵘 |
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| 作者单位： | 中国科学院空间科学与应用研究中心!北京，100080，清华大学现代应用物理系，安徽省蚌埠教育学院物理系，中国科学院空间科学与应用研究中心!北京，100080 |
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| 摘 要： | 本文基于太阳高能电子和日冕区开放场及行星际磁场特征，建立了相对论电子束与伴有空间变化（空间周期变化）的轴向场相互作用模型，用数值方法研究了该体系产生的电磁不稳定性，结果指出只有当太阳高能电子束速度和空间振荡场波数大到一定程度时，该体系才可激发在旋电磁模不稳定性，当太阳高能电子束逐一通过日冕和行星际空间时，激发具有波频向低频漂移特征的电磁波．
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| 关 键 词： | 相对论电子束 空间振荡场 电磁不稳定性 |
ELECTROMAGNETIC INSTABILITY PRODUCED BY SOLAR ELECTRON BEAM THROUGH LONGITUDINAL FIELD WITH OSCILLATION |
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| WANG Xueyi, YI Rong, XU Yonghong,HUANG Yongnian.ELECTROMAGNETIC INSTABILITY PRODUCED BY SOLAR ELECTRON BEAM THROUGH LONGITUDINAL FIELD WITH OSCILLATION[J].Chinese Journal of Space Science,1997,17(2):118-123. |
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| Authors: | WANG Xueyi YI Rong XU Yonghong HUANG Yongnian |
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| Abstract: | A model on the interactions of relativistic electrons and magnetic field with space oscillation is put forward based on the observational characteristics of solar highenergy electrons and opened magnetic field in corona and in interplanetary medium.Numerical method is used to study R-mode cyclotron electromagnetic instability which is excited by electron beam going through longitudinal field wiih space oscillation, when some initial conditions are satisfied such as the velocity of beam and the wave number of oscillation field. The electromagnetic wave with low-frequency drift may be excited when solar high-energy electrons pass through corona and interplanetary medium. |
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| Keywords: | Space oscillation Electron beam Instability |
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