荷電粒子流を用いた衛星電位制御による磁気圈惑星間空間のプラズマパラメータ測定法

概要

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A new method is proposed to control a spacecraft potential in the magnetosphere and interplanetary space in order to measure basic plasma parameters especially for low temperature component of plasma. A pulsed beam is ejected from a spacecraft and a counter streaming plasma current I_e into the spacecraft is measured. The space potential of ambient plasma is identified from the bend on the time variation of [numerical formula] curve and the density and temperature of plasma can be obtained from the values of [numerical formula] and I_e, at the space potential. Another method to use an amplitude modulated electron beam is also proposed and further application is discussed in detail.
宇宙航空研究開発機構の論文