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The Acceleration of Lunar Ions by Magnetic Forces in the Terrestrial Magnetotail Lobes
Journal of Geophysical Research: Space Physics ( IF 2.8 ) Pub Date : 2020-05-18 , DOI: 10.1029/2020ja027829
Xin Cao 1 , Jasper Halekas 1 , Andrew Poppe 2 , Feng Chu 1 , Karl‐Heinz Glassmeier 3
Affiliation  

In order to study the acceleration of ions originating from the tenuous exosphere and surface of the Moon, we analyzed data from the ElectroStatic Analyzer (ESA) and Flux Gate Magnetometer (FGM) carried by the Acceleration, Reconnection, Turbulence, and Electrodynamics of Moon's Interaction with the Sun (ARTEMIS) spacecraft. Previous investigations have modeled the acceleration of lunar ions by the motional electric field of the surrounding plasma. However, in the terrestrial magnetotail, where the lunar ion density can equal or even exceed the ambient plasma density, other forces may play an important role in the tenuous plasma environment. Determining what forces govern lunar ion motion is important in understanding their interaction with the ambient plasma in the unique environment of the magnetotail. Based on a detailed analysis of two individual ARTEMIS observations, we find that magnetic pressure and magnetic tension forces may play an important role in accelerating the lunar ions.

中文翻译:

地磁尾叶中磁力对月球离子的加速作用

为了研究源自微弱的大气层和月球表面的离子的加速度,我们分析了静电分析仪(ESA)和磁通门磁强计(FGM)的数据,这些数据是由月球相互作用的加速度,重新连接,湍流和电动力学进行的与太阳(ARTEMIS)航天器一起使用。先前的研究已经通过周围等离子体的运动电场模拟了月球离子的加速度。但是,在月球离子密度可以等于或什至超过环境等离子体密度的地球磁尾中,其他力可能在微弱的等离子体环境中起重要作用。确定什么力控制月球离子运动对于理解它们在磁尾独特环境中与周围等离子体的相互作用很重要。
更新日期:2020-05-18
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