| 极区夏季中层顶区域尘埃粒子参数的研究 |
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| 引用本文： | 李海龙,牛军,吴健,车海琴. 极区夏季中层顶区域尘埃粒子参数的研究[J]. 核聚变与等离子体物理, 2010, 30(3): 281-284 |
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| 作者姓名： | 李海龙 牛军 吴健 车海琴 |
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| 作者单位： | 电子科技大学物理电子学院,成都,610054;平阴第三中学,济南,250402;中国电波传播研究所,电波环境特性及模化技术国家重点实验室,北京,102206 |
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| 基金项目： | 国家自然科学基金(40831062,60971034);电子科技大学科研启动费(Y02002010401066) |
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| 摘 要： | 采用轨道受限运动方法研究了极区夏季中层顶区域的尘埃粒子电荷数与尘埃粒子半径。利用尘埃等离子体充电理论,建立了尘埃粒子充电方程模型,得到尘埃粒子充电时尘埃电荷数和半径的比值。然后结合ECT02实验数据,分析了发生极区中层夏季回波现象时极区中层顶区域尘埃粒子电荷数和半径的比值,并得到尘埃粒子的半径以及尘埃粒子所带电荷量。结果表明,极区中层顶区域的尘埃粒子平均所带电荷不到一个,它的半径约为20nm。
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| 关 键 词： | 尘埃粒子 极区中层夏季回波 尘埃等离子体 |
| 收稿时间： | 2009-11-23 |
Study on parameter of dust particles in polar summer mesopause |
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| LI Hai-long,NIU Jun,WU Jian,CHE Hai-qin. Study on parameter of dust particles in polar summer mesopause[J]. Nuclear Fusion and Plasma Physics, 2010, 30(3): 281-284 |
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| Authors: | LI Hai-long NIU Jun WU Jian CHE Hai-qin |
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| Affiliation: | (1. School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054; 2. Pingyin No.3 Middle School, Jinan 250402; 3. National Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Beijing 102206) |
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| Abstract: | The orbit-limited motion method is adopted to study the dust charge number and the radius of dust particles in polar summer mesopause. Based on the charging theory of dust particles in the dusty plasma, the equation of dust grain charging is formed, and the formula of the ratio of dust charge number to the radius of dusty particle at the charging of dusty particle is deduced. On the basis of the data of ECT02 campaign, the ratio of dust charge number to the radius of dust particle at occurring polar mesosphere summer echoes(PMSE) is analyzed, then the dust charge number and the radius of dust particle are obtained. The results show that the average charge number of dust particle in the polar mesopause is less than one and the average radius of dust particle is about 20 nm. |
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