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。
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.
出处
《核聚变与等离子体物理》
CAS
CSCD
北大核心
2010年第3期281-284,共4页
Nuclear Fusion and Plasma Physics
基金
国家自然科学基金(40831062,60971034)
电子科技大学科研启动费(Y02002010401066)
