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1958年,空间科学家詹姆斯.范艾伦和同事发现了高速粒子以两个同心圆的方式环绕地球运行的辐射带,称之为范艾伦辐射带。几年之后,研究人员推断,这些同心圆中的粒子来自遥远的地球磁气圈且由地球磁场所控制,当漂移接近地球且遇到更强的磁场时,就会被加速并进入一个环状的运行轨道。同时认为,整个加速过程需要几天到几周的时间,而且辐射带只随时间逐渐变化。20世纪90年代,科学家开始了范艾伦辐射带的卫星在轨飞行探测,结果发现其能量和密度的变化非
In 1958, space scientist James Van Allen and his colleagues discovered that the high-velocity particles radiate around the Earth in two concentric circles, called the Van Allen radiation belt. A few years later, the researchers concluded that the particles in these concentric circles come from the distant Earth’s magnetosphere and are controlled by the Earth’s magnetic field. As the drift approaches the Earth and encounters a stronger magnetic field, it is accelerated and enters a ring Running track. At the same time, it takes a few days to several weeks for the entire acceleration process, and the radiation belt only changes over time. In the 1990s, scientists began the orbiting flight of the Van Allen radiation belt and found that the change in energy and density