| 太阳风里高能电子自发辐射的Langmuir波 |
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| 引用本文： | 周国成,吴京生.太阳风里高能电子自发辐射的Langmuir波[J].空间科学学报,1994,14(4):254-259. |
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| 作者姓名： | 周国成 吴京生 |
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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, 北京 100080 |
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| 摘 要： | 本文讨论太阳风里太阳耀班高能电子产生的Langmuir波的自发辐射。理论估计得出,在时间尺度γkm-1内,Langmuir波自发辐射的电场幅值约为10-3-10-2mV/m(依赖于高能电子速度分布的具体形式),这里γkm为在波数k处的峰增长率。此理论结果比飞船在太阳风里的观测值低2-3个数量级。因此认为,太阳风里自发辐射产生的Langmuir波辐射是可以忽略的。
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| 关 键 词： | Langmuir波 自发辐射 太阳风 |
| 收稿时间： | 1993-06-25 |
LANGMUIR WAVES SPONTANEOUSLY EMITTED BY ENERGETIC ELECTRONS IN THE SOLAR WIND |
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| Zhou Gong-cheng.LANGMUIR WAVES SPONTANEOUSLY EMITTED BY ENERGETIC ELECTRONS IN THE SOLAR WIND[J].Chinese Journal of Space Science,1994,14(4):254-259. |
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| Authors: | Zhou Gong-cheng |
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| Institution: | 1.Center for Space Science cud Applied Research, Academic Sinica, Benjing 1000802.Institute for Physical Science and Technology, University of Maryland, USA |
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| Abstract: | In this paper, the spontaneous emission of Langmuir waves is discuss due to energetic electrons produced by solar flares in the solar wind. It is found that the electric field of the spontaneously emitted Langmuir waves can be as large as 10-3-10-2mV/m(depending upon the distribution of the electrons),if considering a characteristic time of γkm-1, where γkm is the peak growth rate. This results is a great deal lower than the electric field associated with Langmuir waves observed with spacecraft in the solar wind. Thus, compared with induced processes,the spontaneous emission of Langmuir waves in general is negligible. |
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| Keywords: | Langmuir waves Spontaneous emission Solar wind |
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