| 磁云边界层内朗缪尔波活动现象的初步研究 |
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| 引用本文： | 左平兵,朱春明,魏奉思,冯学尚,李汇军.磁云边界层内朗缪尔波活动现象的初步研究[J].空间科学学报,2009,29(3). |
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| 作者姓名： | 左平兵 朱春明 魏奉思 冯学尚 李汇军 |
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| 作者单位： | 1. 中国科学院空间科学与应用研究中心,空间天气学国家重点实验室,北京,100190;中国科学院研究生院
2. 中国科学院空间科学与应用研究中心,空间天气学国家重点实验室,北京,100190 |
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| 基金项目： | 国家自然科学基金项目(40536029,40621003,40674084,40574068,40804046);;973计划(2006CB806304)共同资助 |
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| 摘 要： | 对35例磁云边界层内朗缪尔波活动现象进行了初步分析,发现两类磁云边界层内特有的朗缪尔波活动现象.一类是相对于邻近鞘区和磁云奉体,整个边界层内朗缪尔波活动增强;另一类是短时间的朗缪尔波爆发现象,同时伴随着宽频带的多普勒频移离子声波活动.考察了其中一例朗缪尔波爆发事件对应的高分辨率电子分布函数数据,发现速度约为7 × 103km/s的电子束流形成尾峰分布不稳定性导致了朗缪尔波的爆发.
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| 关 键 词： | 磁云边界层 朗缪尔波 电子束流 |
Study on Langmuir Wave Activities Within the Magnetic Cloud Boundary Layers |
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| ZUO Pingbing,ZHU Chunming,WEI Fengsi,FENG Xueshang,LI Huijun.Study on Langmuir Wave Activities Within the Magnetic Cloud Boundary Layers[J].Chinese Journal of Space Science,2009,29(3). |
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| Authors: | ZUO Pingbing ZHU Chunming WEI Fengsi FENG Xueshang LI Huijun |
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| Institution: | 1;2;1;2;1;2;State Key Laboratory of Space Weather;Center for Space Science and Applied Research;Chinese Academy of Sciences;Beijing 100190;Graduate University of Chinese Academy of Sciences |
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| Abstract: | Two particular types of Langmuir wave activities are found within the Magnetic Cloud Boundary Layers(MCBL):Langmuir wave enhancements in entire region of MCBL compared with the adjacent magnetic cloud body and sheath region for majority MCBL and the rapid Langmuir wave burst phenomena associated with broad-band Doppler shifted ion-acoustic wave activities for a few MCBL.On 3 Oct.,2000,WIND detected a typical MCBL inside which rapid Langmuir waves burst was observed.The Langmuir waves burst was right corresp... |
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| Keywords: | Magnetic cloud boundary layer Langmuir waves Electron beam |
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