基于尘埃等离子体理论的极区中层分层结构研究

Polar mesosphere layered structure based on dusty plasma theory

根据尘埃等离子体理论，考虑到尘埃粒子的充放电过程，研究了尘埃冰晶粒子吞噬效应对极区中层电子浓度分层结构及电导率和介电常数的影响。结果表明，尘埃冰晶粒子的吞噬效应造成了极区中层80～90km高度范围内电子浓度的分层结构，并进而导致这一区域尘埃等离子体电导率、介电常数沿高度出现明显的分层，为解释和研究极区中层夏季回波现象提供参考。

Taking into account the processes of charging and discharging of dust particles, the influence of dust ice particles bite-outs on polar mesosphere electron density layered structure and the conductivity and dielectric coefficient based on the dusty plasma theory is studied. It is shown that the electron density layered structure in polar mesosphere 80-90 km is caused by the dust ice particles bite-outs, which lead tothe appearance of dusty plasma dielectric coefficient andconductivity layered structure along the height between 80 and 90km. The reference for explaining and researching on polar mesosphere summer echoes phenomenon were provided.