Non-Thermal Ion Populations in the Interplanetary Space

这项研究的目的是了解日光层中发生的动力学，并绘制从太阳大气到日光层边界的日光层的全球图景。在行星际空间的多点同时连续观测使我们能够研究非热离子群的组成、能谱以及自热能量和相对论能量之间的广泛能量范围内的时间变化。本研究的主要结果如下：1)首次利用GEOTAIL和WIND卫星观测到了宇宙线中Ar和S的反常成分；2)发现星系宇宙线强度在高纬度地区的变化很小，说明即使在高纬度地区，星系宇宙线强度也是被调制的；3)在1AU观测到的与共转相互作用区离子事件有关的高能离子即使在…之后也能获得连续的能量增益更多的通过磁扇区。与CIR事件相关的强度降低与离子强度和太阳风速的增强有很好的相关性。4)行星际激波时湍流区宇宙射线的平均自由程是正常行星际空间的五分之一或更小。5)在行星际空间加速的离子强度的时间变化取决于事件发生的太阳纬度。6)许多低能太阳中子是由太阳大气中的核间级联过程产生的。8)在耀斑等离子体中加速的高能离子具有由耀斑等离子体中的共振波-粒子相互作用产生的特征丰度。9)提出了冲激太阳耀斑中Alfven波级联加速重离子的机制。10)结果表明，地磁层重联区的有效质子加速是在三个特征区域进行的。11)在重联区，主要的加速发生在激波前沿的曲率漂移，日球层和地磁层的粒子环境受到日冕物质抛射和太阳表面粒子加速的显著影响。通过这一研究，加深了对太阳、行星际空间和行星磁层之间复杂耦合系统的认识。较少

The objectives of this study is to understand the dynamics occurring in the heliosphere and to draw a global picture of the heliosphere ranging from the solar atmosphere to the boundary of the heliosphere. The simultaneous and continuous observations at multi-points in the interplanetary space have allowed us to study the compostition of non-theral ion populations, their energy spectra and the time variation in a broad range of energies between spra-thermal energy and relativistic one. The main results in this study are the following :1) The anomalous component of Ar and S in cosmic rays were observed by the collaboration of GEOTAIL and WIND satellites for the first time in the world.2) It was found that small variation of galactic cosmic ray (GCR) intensity was observed at higher latitude, suggesting that GCRs are modulated even at higher latitude.3) Energetic ions associated with Corotating Interaction Region (CIR) ion events obsserved at 1AU receive continuum energy gain even after … More passing of magnetic sector region. The intensity decreases in associated with CIR events have a good correlation with the enhancement of the ion intensity and the solar wind velocity.4) The mean free path of cosmic ray in the turbulent region at interplanetary shock is one fifths or smaller than that in the normal interplanetary space.5) The temporal variation of ion intensity accelerated in the interplanetary space depends on the heliographic latitude where events occur.6) Many low energy solar neutrons are generated by internuclear cascade processes in the solar atmosphere.8) Energetic ions accelerated at the solar flare site have characteristic abundances produced by the resonant wave-particle interactions in the flare plasma.9) The mechanism of heavy ion accelerataion by cascading Alfven waves in impulsive solar flares is suggested.10) It was shown that effective proton accelerations in the reconnection regions in the geo-magnetosphere are performed in the three characteristic regions, using test particle simulations on the spontaneous fast magnetic reconnection model.11) In the reconnection regions, the dominant acceleration occurs when a particle has a curvature drift at the shock front.The particle environment in the heliosphere as well as geomagnetosphere is remarkably influenced associated with the coronal mass ejection and particle acceleration at the solar surface. The understanding of the complex coupled system between the Sun, Interplanetary space and Planetary magnetosphere, has been deepened through this study. Less