Science. 1986 Apr 18;232(4748):361-5. doi: 10.1126/science.232.4748.361.
During the encounter with comet Giacobini-Zinner, the energetic particle anisotropy spectrometer on the International Cometary Explorer spacecraft observed large fluxes of energetic ions, believed to result principally from ionization of the cometary atmosphere followed by pickup and acceleration by the ambient flow of the solar wind. These heavy cometary ions were observed from approximately 1 day before closest approach to about 2(1/2) days afterward. Three regimes of differing ion characteristics have been identified. An outer region with a scale of approximately 10(6) kilometers contains variable fluxes of antisolar-streaming pick-up ions in the undisturbed solar wind. In the middle region, of approximately 10(5) kilometers, fluxes have less large-scale variability and broader angular and energy distributions. This region is separated from the outer zone by a sharp transition. The inner region has a scale of approximately 10(4) kilometers and is characterized by reduced fluxes and complex angular distributions.
在与 Giacobini-Zinner 彗星相遇期间，国际彗星探测器航天器上的高能粒子各向异性光谱仪观测到大量高能离子通量，据信这些离子主要是由彗星大气的电离以及随后被太阳风的环境流俘获和加速产生的。这些重彗星离子的观测时间大约在最接近彗星之前 1 天到最接近之后 2(1/2)天。已经确定了三种具有不同离子特性的区域。一个尺度约为 10(6)公里的外部区域包含在未受干扰的太阳风中沿太阳方向流动的 pickup 离子的可变通量。在大约 10(5)公里的中间区域，通量的大尺度变化较小，角分布和能量分布较宽。该区域与外部区域通过一个急剧的过渡分开。内部区域的尺度约为 10(4)公里，其特征是通量减少和复杂的角分布。
