Developmental Research for Establishing Measurement Techniques of Multi-Composition Space Plasma over a Wide Energy Range and Elucidating the Space Plasma Interaction in Geospace

为了实现对地空间等离子体/粒子原位观测中的宽能量范围测量，我们开发了以下要素/设施：高性能多功能离子/电子束线，可在8- 200kev2能量范围内产生平行和大剖面。利用飞行时间技术和条形硅固体探测器阵列的高能粒子仪器。采用尖端型静电分析仪、飞行时间技术和条形硅固态探测器阵列的中能等离子体仪器。当我们为未来的探测任务并行开发几套等离子体/粒子仪器时，能量范围为10- 120kevs的简单离子/电子束线将是有用的，有时是至关重要的。在国际合作的基础上，同样类型的梁线也在海外制造。用于未来任务的等离子体仪器也在开发中……通过合作研究进行更多的开发。随着综合数据分析和建模工作的开展，为了综合解释/理解地球空间环境，特别是空间风暴和亚风暴期间的地球空间环境，人们调查和考虑了正在进行或以前的卫星任务所获得的各种观测结果。解决以下科学问题：1。利用卫星/地面观测和模拟的综合研究表明，被地磁场捕获的1-100 keV能量的中能量离子不仅对产生环电流至关重要，而且通过它们的场向电流效应显著改变地球空间中的静电势分布。高能离子（100 keV）和中高能离子（1-100 keV）通过地磁场相互强耦合。来源于太阳风和电离层的氧离子注入地球空间，特别是在空间风暴期间，这些结果表明跨能量耦合和区域间耦合对地球空间环境具有重要意义。少

In order to realize the wide energy-range measurement in the in-situ geospace plasma/particle observations, we have developed the following elements/facilities:1. High-performance and multi-functional ion/electron beam line producing the parallel and large profile over the energy range of 8-200 keV2. High-energy particle instrument using the time-of-flight technique and strip-type Silicon solid-state detector arrays3. Medium-energy plasma instruments using the cusp-type electrostatic analyzer, the time-of-flight technique, and strip-type Silicon solid-state detector arrays4. Simple ion/electron beam line for the energy range of 10-120 keVThese beam line would be useful and sometimes crucial when we are developing several sets of plasma/particle instruments for the future exploration missions in parallel. On the basis of international collaboration, the same type of the beam line is also being fabricated overseas. An actual plasma instrument for the future mission is also under the deve … More lopment through a collaborative research.As the comprehensive data analysis and modeling works, numerous types of observational results obtained by on-going or previous satellite missions have been surveyed and considered for the synthetic interpretation/understanding of the geospace environment, especially during space storm and substorm. The following scientific issues are addressed:1. The comprehensive studies using satellite/ground-based observations and simulation have suggested that the medium-energy ions with 1-100 keV energies, trapped by the geomagnetic field, are essential not only for producing the ring current but for changing the electrostatic potential distribution significantly in the geospace via their field-aligned current effects.2. The high-(>100 keV) and medium(1-100 keV)-energy ions are strongly coupled each other through the geomagnetic field3. The oxygen ions with origins of the solar wind and the ionosphere are injected into the geospace particularly during space stormsThese results indicate that the cross-energy coupling and inter-region coupling are important for the geospace environment. Less