月球电离层探测与研究

从20世纪60年代到本世纪初，人类发射了一系列绕月飞船，对月球大气和月球电离层进行研究。科学家发现，月球电离层主要出现在向日面。在表面几百米高度范围内，由太阳辐射导致的光致电离使得月球向日面出现密度不超过10^10／m2的电离层等离子体。进一步研究表明，由于月球没有内禀磁场，月球电离层与太阳风中的行星际电场耦合在一起，时刻处在“飘动”中。电离层密度的变化与月相、当地的月表剩磁、太阳风条件、当地的月壤特性等相联系。

Investigation on lunar ionosphere

Since late 1960s,a series of spacecrafts have been launched to detect the space environment around the Moon. The observation revealed the existence of a thin layer of ionosphere around the Moon with its plasma concentrating on the dayside. The photoelectron layer,with the electron density less than 1010/m3,extends several hundred meters above the Moon surface. Further analysis showed that,as there is no intrinsic magnetic field around the Moon,the lunar ionosphere is directly coupled to the interplanetary e...